Air Quality in India During COVID-19

Date: 2020-May-08; Update: 2020-May-25; Update: 2020-Jun-03

All the data is from the official monitoring network operated and maintained by the Central Pollution Control Board, for every city with at least one air monitoring station. Data was accessed via openaq.org using their API services. All the data was cleaned and processed for quality.

• Lockdown Phase 1: March 24th to April 14th, 2020.
• Lockdown Phase 2: April 15th to May 3rd, 2020.
• Lockdown Phase 3: May 4th to May 17th, 2020.
• Lockdown Phase 4: May 18th to May 31st, 2020.
• O3 and CO averages are for day-time only.
• PM10, PM2.5, SO2, and NO2 averages are all-time.

Publications and Media Mentions

• Air quality trends and lessons learnt in India during the COVID lockdowns
  Policy Brief (CCAPC/2020/03) at the Collaborative Clean Air Policy Centre (2020/08)
• Why was daytime Ozone pollution higher during the lockdowns. Op-Ed in the WIRE (2020/07)
• Why we need to look beyond the city limits for clean air in Indian cities – A lesson from the COVID times. Op-Ed in the WIRE (2020/07)
• The clock is ticking. Interview in Lights On (2020/07)
• Pandemic’s cleaner air could reshape what we know about the atmosphere. Interview in New York Times (2020/06)
• Part II: How Did Lockdown 2 Change the Pollution Over India’s Cities? Op-Ed in the WIRE (2020/05)
• The natural experiment. Podcast @ 99% Invisible (2020/05)
• The coronavirus offers a radical new vision for Indian cities. Interview in New Yorker (2020/04)
• Air pollution modeling in India: Insights from a natural experiment. Podcast @ Atmospheric Tales (2020/04)
• Data Analysis: How Has the Lockdown Changed the Pollution Over North India? Op-Ed in the WIRE (2020/04)

PM2.5

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Agra	59	43.7	49.2	45.5	61.5
Ahmedabad	60	34.6	28.9	26.2	26.7
Aizawl	40.9	36.5	11.7	15.2	13.1
Ajmer	49.2	25	26.2	33.1	49.5
Alwar	45	24.9	21.7	23.8	33.5
Amaravati	24.7	22.7	14.7	18.2	25.2
Ambala	44.7	25.5	29.5	32.2	23.4
Amritsar	36.2	21.2	18.8	34.3	39.1
Ankleshwar	61.9	43.7	32.1	30.2	23.1
Asansol	63.3	35.8	26.5	35	26.1
Aurangabad	47.9	25	20	12.9	13.8
Bagalkot	32.3	26.6	19.6	12.5	17.5
Bahadurgarh	67.8	39	46.7	57.6	35.4
Ballabgarh	39.8	42.4	55.3	40.5	49.1
Bathinda	42.1	34.2	30.1	51.6	25.6
Bengaluru	41.8	27.8	22.9	22.6	22.5
Bhiwadi	98.8	40.2	49.9	59	79.2
Bhiwani	41	25.8	26.6	26.1	23.5
Bhopal	41.3	33.1	45.5	21.2	20.4
Brajrajnagar	64.4	76.1	54.4	60.8	85.4
Bulandshahr	75.1	50.8	58.1	50.2	68.6
Chandigarh	25	14.6	15.3	20.9	22.8
Chandrapur	31.9	35.4	29.6	27.9	39
Charkhidadri			114.9	64.7	164
Chennai	33.2	23.5	12.4	11.1	24.6
Chikkaballapur	36.5	27.9	25.7	25.5	14.1
Chikkamagaluru	32.5	28	21.3	29.3	18
Coimbatore	38.2	25.8	24	23.8	22.1
Damoh	33.3	22.9	21	15.7	16.7
Delhi	74.2	42.1	46.5	55.6	60.3
Dewas	45	41.4	51.2	25	27.9
Dharuhera	70.7	39.9	36	33.4	32.4
Eloor	21	14.8	31.6	8.3	7.3
Ernakulam	33.7	20	17.1	16.6	14.1
Faridabad	69.5	36.2	40.8	55	99.7
Fatehabad	50.3	31.8	48	60.3	49.7
Gandhinagar	36.2	28.5	22.2	25.5	20.8
Gaya	54.9	41.7	36.6	41.6	42.4
Ghaziabad	85.9	45.7	53.4	53.7	61.6
Greaternoida	71.4	35.8	49.5	43.5	55.9
Gurugram	63.4	36.5	44.9	48.5	53.4
Guwahati	81.2	87.1	27.3	26.8	19.3
Gwalior	54.3	36	34.8	33.3	29.3
Hajipur	43.3	33.6	18.7	27.6	18.8
Hapur	45.1	37.3	39.9	42.4	45.4
Hisar	61.2	35.6	50.1	54.6	54.1
Howrah	67.1	33.9	19.7	21.1	10.9
Hubballi	30.3	27.2		17.5	13.6
Hyderabad	36.9	34.1	28.1	27.8	32.3
Indore	46.8	38.7	33.6	18.6	18
Jabalpur	46.8	33.2	36	30	30.7
Jaipur	42.2	24.9	32.8	36.3	49.1
Jalandhar	47.9	22.8	33.5	44.3	47.7
Jind	60.7	42	41.8	30.8	52.8
Jodhpur	77.3	50.1	47.9	52	83.8
Jorapokhar	70.8	67.7	27.7	50.3	50.6
Kaithal	36.5	22.3	36.5	43	42.3
Kalaburagi	44.7	36.3	33.2	26.7	29.5
Kalyan	70.2	66.7	26.7	25.9	18.3
Kannur	48.4	38.3	31.9	28.3	24.9
Kanpur	61.4	44.8	48.5	43.8	51.3
Karnal	56.1	33.8	51.9	51.6	62.2
Katni	48.6	29.9	29.9	29.6	41.9
Khanna	27.4	19.3	25.2	34.6	38.1
Kochi	43.1	23.6	18.6	19.1	18.2
Kolkata	60.5	34.3	17.2	18.6	17.6
Kollam	45.6	42.7	32.8	29.2	29.4
Kota	42.7	28.6	27.3	29.4	36.7
Kozhikode	29.1	29.8	25	22.8	20.4
Kurukshetra	50.6	27.9	40.8	60.4	55.5
Lucknow	69.2	56.5	54.2	52	67.1
Ludhiana	39.6	17.2	22.4	35.3	41
Maihar	27.5	16.5	19.6	19.4	23.8
Mandideep	33	24.1	40.9	23.7	28.5
Mandigobindgarh	46.1	28.3	30.6	57.4	67.6
Mandikhera	51.1	32	37.9	39.3	55.5
Manesar	60.8	25.6	32.7	33	41.4
Meerut	64.2	46.6	53.8	55.4	59.4
Moradabad	67.1		19.7		31.3
Mumbai	45	27.8	23.3	22.6	27
Muzaffarnagar	68	42.3	48.1	70.3	73
Muzaffarpur	83.4	67	28.8	40.1	22.4
Mysuru	21.1	19	16.9	18.8	13.5
Nagpur	32.9	22.9	25.2	20	24.1
Nandesari	42.7	28.1	37.9	61.2	18
Narnaul	48.4	25.5	27.6	29.4	22.5
Nashik	38.7	33.3	24	21.6	17.1
Navimumbai	59.9	35.1	17.1	15.2	8.5
Noida	72.6	39.1	52	49.3	50.3
Pali	50	32.2	29.4	34.1	56.2
Palwal	61	39.3	67.6	41.3	14.6
Panchkula	23.3	15.5	21.7	27.3	28.9
Panipat	60.2	32.5	53	57.1	53.1
Patiala	30.8	15.7	22.7	25.9	40.9
Patna	67.3	51	25.7	46.5	30.9
Pithampur	39.2	35.8	34.6	22.1	23.6
Pune	54.8	23.2	21.3	21.2	21.4
Rajamahendravaram	26.1	21.3	8.5	12.1	24.9
Ramanagara	28	22.9	21.2	23.1	11.9
Ratlam	52.8	56.2	67.2	46.3	81.8
Rohtak	63.7	35	52.4	58.7	46
Rupnagar	55.9	22	33	73.2	79.5
Sagar	27.6	23.4	27.8	28.4	34
Satna	21.2	9.9	13.3	22.1	20.7
Shillong	31.9	42	12.4	18.4	13.9
Siliguri	68.1	67.8	24.2	29.1	21
Singrauli	65.3	65.7	61.9	60	69.9
Sirsa	32.8	22.9	42.6	48.2	46
Sonipat	35.4	22.6	37	40.4	40.3
Talcher	43	50.1	66.8	59.7	22.8
Thiruvananthapuram	36.4	22.6	16	16.7	13.7
Tirupati	29.9	21.6	16.6	16.6	23.7
Udaipur	42.4	25.9	26.2	28.7	37.9
Ujjain	46.3	42.4	55.6	25	21.8
Vapi	79.1	40.4	40.3	31.5	21.6
Varanasi	62.3	55.6	33.1	36.7	41.3
Vatva	73.4	28.1	34.9	31.2	42.3
Vijayapura	46.8	50.4			20.3
Visakhapatnam	33.5	22.5	14.7	12.5	24.7
Yadgir	29.5	31.8	27.5	23.3	19.6
Yamunanagar	60.4	34.9	38.6	55.7	60.8

PM10

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Ahmedabad	128.5	84	77.6	76.7	77.4
Aizawl	49.8	44.4	15.7	18.5	18.3
Ajmer	105.4	58.3	63.6	64.8	139.4
Alwar	86.3	51.7	43.8	57.4	69.3
Amaravati	43.2	45.7	35.1	39.1	75.2
Ambala	96.9	55	72.1
Amritsar	100.5	60.8	65	77.5	74.3
Ankleshwar	132.5	93.8	77.4	91.8	66.6
Asansol	120.4	88.7	54.5	67.3	54.6
Aurangabad	81.3	44.2	42	41.9	43.2
Bagalkot	70.6	50.6	48.9	43.2	47.7
Bahadurgarh	106.8	66.2	94	95.2	123.4
Ballabgarh	107.1	61.9	81.5	95	99.2
Bathinda	107.3	38.7	61.5	126.8	60.6
Bengaluru	87.2	49.7	53.3	76.3	80.9
Bhiwadi	181.6	82.6	105.1	117	200.3
Bhiwani	102	54.2	117.9	120	136.2
Bhopal	129.8	94.7	105.4	74	85.7
Brajrajnagar	93.1	170.2	116	103.9	101.5
Bulandshahr	145.4	117.4	165.6	135.8	241.9
Chandigarh	66.5	36	42.4	56.7	83.3
Chandrapur	66.4	66.9	56	49.3	94.9
Charkhidadri			177.6	132.1	213.9
Chennai	46.9	91.6			407.4
Chikkaballapur	87.9	65.6	50.1	68.3	52.2
Chikkamagaluru	64.5	59.9	55.7	47.7	45.5
Coimbatore	53.7	26.8	25.6	30.3	35.7
Damoh	90.7	64.8	56.7	61.7	75.5
Delhi	158.4	86	113.2	127	173.9
Dewas	126.9	91.7	104.8	83.5	112.6
Dharuhera	172.2	63.6	50.4	46.2	49.5
Eloor	85.1	60	50.4	54.7	54.2
Ernakulam	64.4	40.7	34.1	39.3	38.5
Faridabad	190.9	100.3	129.8	128.5	185.6
Fatehabad	84	58.3	130	134.3	164
Gandhinagar	90.7	67.4	65.7	69.9	64.6
Gaya	74.7	79.1	65.7	73.9	92
Ghaziabad	167.5	101.2	129	124.3	203
Greaternoida	171.6	91.3	133.9	114.8	226.9
Gurugram	138.6	78	103.9	106.6	152.1
Guwahati	157.2	166.4	41	45.7	34.1
Gwalior	109.9	96.4	97.7	88.4	139.6
Hajipur	148.3	87.6	88.1	136.6	91.3
Hapur	105.6	117.2	161.5	141.7	168.7
Hisar	108.6	72.5	141.3	137.9	169
Howrah	142.6	75.9	38.8	43.4	33.9
Hubballi	83.1	58.6		45.6	55.9
Hyderabad	87.6	63.8	57.3	63.9	108.1
Indore	141.7	99.5	108	89.7	114.3
Jabalpur	124	78.1	85.9	67.8	116.2
Jaipur	98	59.5	84.1	80.3	140.4
Jalandhar	82.4	39.1	57.6	76.2	87.1
Jind	92	65.7	119.9	98.4	151.4
Jodhpur	164	95.1	96	111.9	187.3
Jorapokhar	140.1	94.3	101.6	108.7	156.9
Kaithal	91.3	55.7	99.3	119.3	155.2
Kalaburagi	93	75.3	60.5
Kalyan	198.4	164.9	78.2	100.2	78.9
Kannur	83.9	62	50.4	46.7	48.3
Karnal	111.7	61.5	74.6	77.9	141
Katni	119.8	89.7	95.6	87.6	163.2
Khanna	61.6	41.7	55.6	87.4	100
Kochi	121.9	41.6	32.1	36	38.1
Kolkata	113.6	62.1	34.4	39.3	40.8
Kollam	70.4	57.3	45.2	41.2	46.9
Kota	89.7	72	59.1	60.4	84.4
Kozhikode	65.1	45.5	41.7	38.3	39.9
Kurukshetra	95.4	56.4	96.1	122	146.3
Ludhiana	82.4	37.3	52.3	73.9	89.8
Maihar	52.3	40.8	47.7	44.1	51.1
Mandideep	100.7	46.8	66.2	41.1	56.8
Mandigobindgarh	104.9	47.2	83.8	133.1	142.7
Mandikhera	110.8	84.9	93.7	81.3	159.9
Manesar	129.3	67.9	104.5	90.7	149.5
Meerut	136.1	117.5	162.9	138.1	196.9
Moradabad	103.8		34.1		70.7
Mumbai	135.3	72.2	55.1	67.1	81.9
Muzaffarnagar	133.7	100.1	119.4	134.5	174.9
Mysuru	48	36	35.2	44.5	34.1
Nagpur	65.4	45.9	46.5	33.4	40.5
Nandesari	130.9	98	185.5	220.2	287.6
Narnaul	104.5	69.1	91.7	73.4	96.1
Nashik	84.6	52.4	48.9	54.9	41.2
Navimumbai	139.7	73.4	59.3	71.8	49.3
Noida	150.9	81.5	116.9	112.6	173
Pali	124.8	76.2	81.9	75.4	139.7
Palwal	134.6	99.8	130.2	99.5	164.1
Panipat	179.2	98.8	199	202.9	238.7
Patiala	72.2	36	63.2	74.1	102.2
Patna	132.1	111.8	72.1	99	94.4
Pithampur	134.4	104.2	116.1	115.2	136
Pune	91.4	37.2	34.1	33.9	35.8
Rajamahendravaram	59.4	44.1	25.2	37	75.3
Ramanagara	56.7	43.1	45.8	58.4	37.9
Ratlam	121.6	82.9	102.9	110.6	166.9
Rupnagar	99.6	34.6	54.9	96.5	88.9
Sagar	67.4	51.3	56	65.9	100.5
Satna	95.9	60.7	74.2	65.4	72.2
Shillong	45.4	66	16.6	26.4	19.4
Siliguri	118.5	107.7	37.2	41.6	38.5
Singrauli	140.3	207.1	165.4	170	281.6
Sirsa	80.6	59.1	122.1	122.7	147.4
Sonipat	144.1	78.5	147.9	183.1	168.1
Talcher	71.9	96.6	31.4	74.6	44.8
Thane	105.4	41.4	44.2	66.5	68.8
Thiruvananthapuram	60.2	46.4	33.9	40.5	34.7
Tirupati	55	38.8	31.1	32.6	65.9
Udaipur	86.9	53.8	54.9	59.7	103.2
Ujjain	112.8	96.6	105.2	70.6	101.9
Vapi	143.7	80.8	70.6	67.9	53.2
Vatva	178.9	67	74.6	64.1	93.4
Vijayapura	58.5	80.6
Visakhapatnam	85.4	60.7	53.4	44.6	95.8
Yadgir	61.6	58.3	60.1	49.3	75.5
Yamunanagar	117.4	69	92.6	122	143

NO2

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Agra	52.3	45.9	39.6	29	30.3
Ahmedabad	48.1	28	17.8	18.4	22.2
Aizawl	3.1	2.6	3.7	3.7	3.7
Ajmer	21.7	8.2	11.8	14.1	9
Alwar	37.1	26.3	25.9	26	23.8
Amaravati	9	4.6	4.5	6.5	8.2
Ambala	25.3	13.9	18.6	26	26.7
Amritsar	12.7	11.4	16.6	17.5	12.8
Ankleshwar	12.8	6.3	5.3	4.4	4.4
Asansol	33.1	22.9	8	24.5	10.5
Aurangabad	19.9	23.4	12.8	20.3	17.6
Bagalkot	24.3	16.5	6.7	26	28.9
Bahadurgarh	20.4	18.4	20.6	24.3	17
Ballabgarh	16.9	23.8	16.4	4.8	5.1
Bathinda	18.1	18.4	18.3	18.4	18.5
Bengaluru	24.6	12.7	13.5	16.3	15.8
Bhiwadi	64.8	22.6	17.7	31.2	51.5
Bhiwani	22.1	16.2	16.3	16.1	16.7
Bhopal	30.3	14.1	11.3	10.6	7.2
Brajrajnagar	15.5	5			26.2
Bulandshahr	31.7	16.8	14.4	20.3	33.3
Chandigarh	16	10.7	11.8	13.6	6.7
Chandrapur	18.3	26.7	16.5	14.2	16.9
Chennai	11.8	11.7	9.4	7.1	12.9
Chikkaballapur	13.1	11	14.5	15.1	14.2
Chikkamagaluru	14.8	21.5	24	35.3	21.1
Coimbatore	41.7	62.7	56.4	23.7	36.3
Damoh	15	15.1	15	15.1	15.1
Delhi	39.8	20	19.2	22.4	31.1
Dewas	24	15.1	15.3	11.8	9.7
Dharuhera	44.5	8.8	15.2	28.8	25.5
Eloor	12.7	6.7	5.2	6.2	34.7
Ernakulam	3.6	3.3	3.2
Faridabad	12.7	10.6	12.3	15.3	12.8
Fatehabad	10.8	6.1	10.1	15.1	9.9
Gandhinagar	12	5.6	3.4	3.3	3.6
Gaya	7	7.5	15.3	15.2	11.3
Ghaziabad	48.3	24.6	26.7	28.7	33.5
Greaternoida	46.8	15.4	17.5	20.8	30
Gurugram	31.3	16.8	17.3	28.9	38.8
Guwahati	23.1	16.1	6.8	10.6	10.5
Gwalior	21.8	9.7	10.1	15.7	18.9
Hajipur	23.9	17.3	9	9.8	5.7
Hapur	54.8	57	54.4	54.8	53.9
Hisar	31.2	18.2	20.6	22	22.8
Howrah	45.7	16.6	12.9	12.6	15.1
Hubballi	31	17.1		20.6	54.2
Hyderabad	27.8	17.6	23.3	23.7	26.4
Indore	80.4	39	40.2	41.2	38.3
Jabalpur	42.8	21.9	24.1	18.7	23.8
Jaipur	35.5	14	13.9	15	20.4
Jalandhar	9.4	9.5	7.6	6.4	8.6
Jind	27	11.3	16.3	20.9	28.8
Jodhpur	39.2	20.1	22	19.2	19.2
Jorapokhar	11	11	11.1	10.7	10.5
Kaithal	22.8	16.9	17.1	22.7	23.7
Kalaburagi	30.8	13.7	6.9	9.7	9.6
Kalyan	25.8	11.7	6.9	8.2	8.1
Kannur	17.6	13.4	14	16.2	16.2
Kanpur	45	15	20	23.1	40.1
Karnal	19.2	7	10.7	11.3	15.4
Katni	38.7	18.9	15.8	14.8	21.4
Khanna	12.6	6.3	6.6	7.3	8.8
Kochi	10.6	4.2	6.3	14.1	20.7
Kolkata	41.3	12.8	8.2	8.4	7.5
Kollam	19.6	11.6	10.9	11.8	11.9
Kota	36.7	13.3	11.9	20.8	7.9
Kozhikode	20.3	8.8	9	10.6	9.4
Kurukshetra	28.2	10.5	17.4	22.5	18.6
Lucknow	30.4	14.3	15.9	14.8	15.2
Ludhiana	41.4	17.3	41.8	35.2	19.6
Maihar	37.3	35.8	29.2	4.1	17.2
Mandideep	20.9	12.2	14.7	11.9	13.8
Mandigobindgarh	10.8	13.4	7.5	8.1	8.4
Mandikhera	13.4	15.5	37.5	25.2	17.3
Manesar	43.2	19	3.9	4.7	4.7
Meerut	24.8	13.9	21.3	23.5	29
Moradabad	30.9		10.3		21.3
Mumbai	37.5	9.8	7.3	9.8	7.5
Muzaffarnagar	12.7	6.4	7.3	10.5	12.6
Muzaffarpur	24.1	24.1	24.1	24.1	24
Mysuru	30.3	11.3	12.3	18.6	19.5
Nagpur	53.1	36.2	20.1	18.5	21.6
Nandesari	62.4	30.6	56.2	55.2	59.9
Nashik	34.8	22.2	20.4	18.9	13.6
Navimumbai	47.8	13	10.1	10.5	11.8
Noida	32.3	13.9	16.1	18.1	22.6
Pali	25.4	19.1	10.6	9.7	10.2
Palwal	10.6	6.4	6.2	10	17.6
Panchkula	18.4	18	20.8	29.7	25.7
Panipat	77	50.8	50.8	57.2	79.5
Patiala	7.1	3.7	6.8	6.9	11.8
Patna	60.2	44.1	15.6	21.4	16.5
Pithampur	14.7	9	9.2	8.2	8.1
Pune	17.4	8.8	8.1	8.1	8.5
Rajamahendravaram	17.5	7.5	6.9	8.2	11
Ramanagara	13.9	11	10.9	26.9	23.2
Ratlam	29.5	11.4	8.9	5.1	18.3
Rupnagar	7.5	8.4	10.2	6.9	3.7
Sagar	21.8	11.5	10.3	11.1	13.8
Shillong	3.1	2.6	2.8	2.6	2.9
Siliguri	51.2	35.5	23	24.7	24.8
Singrauli	43.2	38.6	38.3	40.9	42.3
Sirsa	4.7	4.7	4.7	5.2	7.5
Sonipat	49.4	52.9	51.2	64	48.9
Talcher	6	6.4	19.6	16.6	16.8
Thane	43.1	12.5	8.6	6.5	5.9
Thiruvananthapuram	18.7	8	7.9	9.8	10.3
Tirupati	25.2	6	7.6	7.6	9.4
Udaipur	20.4	6.3	7	13.9	9.9
Ujjain	22.8	11.9	9.7	7.5	6.1
Vapi	22.6	16.5	19	8.8	2.9
Varanasi	20.8	32.6	31.6	29	26.4
Vatva	49.1	22.8	14.1	6.3	6.8
Visakhapatnam	31.8	28.7	24.1	14.7	27.6
Yadgir	17	7.8	9.4	10.5	9.5
Yamunanagar	39.4	24.2	23.8	17.3	26.6

SO2

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Agra	27.1	28.3	29	32.9	27.3
Ahmedabad	57.5	27.3	27.3	11.8
Aizawl	5.6	7.2	6.5	8.6	10.4
Ajmer	7.2	6.1	8.6	9.1	7.8
Alwar	23.5	19.5	11.9	10.4	10.4
Amaravati	20.1	20	13.2	10.2	10.7
Ambala	17.6	12.1	20.2	25.8	23.4
Amritsar	12.5	7.3	8.6	9.4	20.5
Ankleshwar	43.7	10.9	8.5	6.8	6.8
Asansol	19.5	14.8	10	6.9	4.6
Aurangabad	7.7	6.7	5.4	6	6.2
Bagalkot	8.9	6.8	5.3	4.7	4.6
Bahadurgarh	29.7	58	25.4	9.2	4.6
Ballabgarh	7	5.1	9.4	6.8	11.1
Bathinda	8.6	9.6	10	9.5	10.5
Bengaluru	7.3	6.8	7.1	7.2	5
Bhiwadi	40.3	15.3	7.9	14.2	26.1
Bhiwani	47.7	33.9	16.1	16.2	13.5
Bhopal	18.9	13.6	14.9	10.8	17.9
Brajrajnagar	5.5	4.7	4.7	6	6.9
Bulandshahr	29.5	26	19.1	13.7	20.5
Chandigarh	10.7	11.4	12.1	12.4	12.7
Chandrapur	18.8	19.2	21.2	25	29.3
Chennai	10.8	7.5	6	6.2	8.7
Chikkaballapur	15.6	17.3	15.1	16.8	11.1
Chikkamagaluru	3.1	3.1	2.8	2.5	2.6
Coimbatore	9	6.8	6.6	6	6.3
Delhi	14.6	14	16.3	13.4	15.9
Dewas	11.8	12.7	16.1	10.5	9
Dharuhera	22.8	15.4	12.5	13.3	9.9
Eloor	6.1	5.4	5.6	6	5.6
Ernakulam	3.7	3.3	3.2	2.8	2.6
Faridabad	14.7	6.5	9.4	5.8	4.3
Fatehabad	8.7	11.2	12.3	13	14
Gandhinagar	10.9	5.6	6.8	7.3	7.9
Gaya	13.2	11.2	13.6	11.7	11.7
Ghaziabad	17.1	25.1	12.3	14.5	26.9
Greaternoida	14	13.6	12	12.4	17.6
Gurugram	9.7	13.9	9.8	8.7	10.7
Guwahati	13.7	16.4	15.2	14.7	14.8
Gwalior	20.1	18.1	19.9	24.9	21.6
Hajipur	4.8	8.2	8.5	9.2	9.6
Hapur	5.9	8.4	7.8	5.1	4.5
Hisar	13.5	8.2	12.3	13.5	18.2
Howrah	24.2	12.1	8.4	9.3	8.2
Hubballi	3.7	3.6		12.9	337
Hyderabad	7.3	8.8	6.4	6.6	8
Indore	11.1	6.8	8.5	7.3	7.9
Jabalpur	8.7	6.8	7.6	6.9	7.2
Jaipur	14.9	13.3	13	13.1	12.1
Jalandhar	9.7	11.1	8.7	9.4	6.9
Jind	21.8	26.3	23.2	26.6	45
Jodhpur	9.8	7.4	5.1	4.8	7.1
Jorapokhar	32.4	33.6	28.2	26.6	23
Kaithal	7	6.2	6.2	6.1	10.5
Kalaburagi	25	14.7	12.9
Kalyan	29.7	81	35.9	63.1	128
Kannur	3.1	2.7	2.3	2.3	2.2
Kanpur	13.2	15.3	15.2	11.5	10.2
Karnal	41.4	32.5	37.7	26.1	46.9
Katni	9	6.3	6.9	15.6	23.1
Khanna	16.9	9.3	5.6	9.7	21.8
Kochi	20.2	20	16.6	13	12
Kolkata	12.2	9.6	6.8	6.6	5
Kollam	9.1	2.5	2.5	2.5	2.4
Kota	10.6	10.3	8.3	9.5	8.5
Kozhikode	4.3	3	2.2	2.4	2.6
Kurukshetra	19.2	12.6	17.4	12.6	39.2
Lucknow	6.7	6.3	7.3	6.6	6.2
Ludhiana	12.1	4.8	7.7	8.5	15.9
Maihar	7.3	7.2	7.3	7.3	6.9
Mandideep	10.4	8.5	10.7	10.9	14.7
Mandigobindgarh	17.6	6.4	7.2	31.8	27.7
Mandikhera	14.2	15.7	15.5	16.5	16.9
Manesar	16.1	31.9	20.9	20.4	9.8
Meerut	13.7	12.1	10.1	8.9	14.8
Moradabad	19.1		10.5		7.7
Mumbai	15.4	12.5	24.6	36.2	18.8
Muzaffarnagar	22.6	23.2	25.5	23.7	33.9
Muzaffarpur	21.4	24.7	17.9	16.9	15.4
Mysuru	4.1	2.5	2.8	2.4	3.5
Nagpur	12.7	4	3.1	4.6	4.6
Nandesari	9.4	3	33	11.3	13.3
Narnaul	18.3	5.7	4.7	45.4	7.6
Nashik	5.3	3.3	2.9	3	2.7
Navimumbai	27.7	25.1	10.7	10.5	7.7
Noida	12.8	12.6	11.7	12.8	17.4
Pali	6	4.3	3.3	3.4	3.3
Palwal	8.5	19.1	11.3	15.2	6.8
Panchkula	11.8	10.2	16.9	43.9	19.5
Panipat	21.2	11.9	12.4	32.1	54.5
Patiala	6.8	4.5	5.4	6.6	14.3
Patna	10.8	11.7	8.5	8.4	6.4
Pithampur	15.2	8	11.2	10.6	11.9
Pune	48.4	24.5	22.6	22.5	23.7
Rajamahendravaram	9.1	7.4	5.7	6.9	8.6
Ramanagara	20.6	17.6	20.9	27	24.9
Ratlam	66.7	9.2	4.8	10.2	9.9
Rohtak	10.3	8.6	9.4	9.5	6.3
Rupnagar	8.9	8.8	8.4	9.8	12.5
Sagar	2.3	2.1	3.1	3.2	3.2
Satna	14.6	8.8	8.9	7.7	8
Shillong	4.6	7.5	6.8	7.1	9.1
Singrauli	52.7	58.1	70.1	52.2	49.5
Sirsa	38	31	42.5	17.8	21.7
Sonipat	27.9	27.9	27.9	27.1	27.4
Talcher	40.4	6	42	15.7	24.5
Thane	46.7	6	7.5	13.1	5.7
Thiruvananthapuram	8	6.3	6.3	6.6	6.9
Tirupati	6.6	5.6	6.3	5.5	4.5
Udaipur	12.9	9.4	6.5	10.7	8.2
Ujjain	10.1	8.9	9.1	6.4	7.8
Vapi	20	17.4	6.6	23.2	26.7
Varanasi	23.7	32.2	32.8	33.4	65.1
Vatva	47.6	8	7.4	4.6	7
Vijayapura	5.1	6.7
Visakhapatnam	9.5	9.2	7.6	8.6	9
Yadgir	21.1	19.9	19.7	19.3	23.2
Yamunanagar	18.2	10.7	16.7	14.7	22.4

CO

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Agra	1246.4	1092.1	476	580.1	499.8
Ahmedabad	438.6	373.1	438.2	460.5	543.3
Aizawl	412.4	338	268	315.6	304.3
Ajmer	788.7	593.8	777.9	556.5	884
Alwar	686.8	589.4	526.9	652.2	603.6
Amaravati	512.4	1228.9			417.5
Ambala	368.9	207.9	287.6	260	305
Amritsar	684.5	786.6	743.4	738.2	630.6
Ankleshwar	1103.4	803.1	763.7	749.8	783.9
Asansol	572.1	507.9	336.2	475.5	602
Aurangabad	650.1	556.7	500.7	489.5	498.9
Bagalkot	878.6	2420.7	1181.4	1664.6	761.7
Bahadurgarh	601.2	422.7	499.5	630.1	465
Ballabgarh	783.3	871.5	1129.8	1150.3	1053.1
Bathinda	1968.4	1956.3	1506.7	392.8	473.6
Bengaluru	929.6	779.9	735.9	825.9	827.8
Bhiwadi	752.8	447.5	492.9	738.9	680.2
Bhiwani	1079.6	435.2	371	461.9	380
Bhopal	571.3	450	455.5	334.5	300.6
Brajrajnagar	167.8	307.7	365.3	382.1
Bulandshahr	1158.2	1099.9	920.1	717.5	817.8
Chandigarh	510.9	403.9	451.2	484.1	389.2
Chandrapur	280.7	344	336.8	287.7	405.1
Charkhidadri			653.8	449.8	586.7
Chennai	811.7	635.3	667.2	696.6	983.8
Chikkaballapur	732.6	722.2	803.2	813	801.7
Chikkamagaluru	488.9	406	372.5	630	384.1
Coimbatore	730.8	569.9	965.6	953.8	937.8
Damoh	283.6	292.1	293.6	312.4	298.9
Delhi	864.7	621.4	857.3	848.8	973.1
Dewas	803	731	908.7	608.8	429.5
Dharuhera	1646.3	586.9	1142.2	438.2	288.3
Eloor	415.9	280.3	299	304.6	320.2
Ernakulam	1574.6	1272.2	1414.5	2074	2053.1
Faridabad	972.7	708.2	563.2	878.4	725.2
Fatehabad	399	236.3	293.3	273.2	319.8
Gandhinagar	758.8	725.1	703.3	577.4	632.1
Gaya	765.3	812	1072.7	862.3	793.3
Ghaziabad	980.7	742.2	817.2	738	853.6
Greaternoida	1828.5	2407.7	1638.3	1050.8	947.1
Gurugram	1257.3	619.3	719.8	990	1127.7
Guwahati	399.1	418.4	332.4	352.4	444.6
Gwalior	649	397.9	483.2	583.4	465.8
Hajipur	698.2	620.6	613.9	735.8	535.5
Hapur	1043.7	1652.6	1929.1	1288.1
Hisar	660.6	568.8	770.6	310.9	382.8
Howrah	525.1	347.9	365.5	359.2	288.3
Hubballi	401.8	309		389.5	905.5
Hyderabad	505.2	448.1	440.5	436.4	382.9
Indore	536.5	272.7	297.4	230.3	209.6
Jabalpur	591.6	354.3	537.3	420.7	515.2
Jaipur	871.5	539.3	611	685.7	816.2
Jalandhar	682.4	378	364	545.2	568.9
Jind	435.8	309.2	600.2	886.6	1257.8
Jodhpur	1002.1	735.5	568.4	586.9	784.4
Jorapokhar	1949.6	1825.9	1376.8	1186.9	902.4
Kaithal	577.5	368.3	476.8	491	583.5
Kalaburagi	394.8	228	155.8
Kalyan	824.7	577	259.3	219.5	200.4
Kannur	397.4	197.2	218.6	285.6	263.2
Karnal	500.1	237.4	403.2	411	463.8
Katni	416.8	373.4	425.3	606	664.7
Kochi	1324.3	893.9	1034.3	1328.7	1401.8
Kolkata	730.5	575.2	421.2	391.5	317.2
Kollam	540.9	426.1	394.5	518.9	596.2
Kota	454.3	489.4	518	414.7	504.7
Kozhikode	1012.7	621	313.2	276.6	496
Kurukshetra	471.2	246.9	337.2	486.8	361.3
Lucknow	1120.2	1001.4	1007.6	904.4	1061.6
Ludhiana	460.7	177	271.4	278.8	375.9
Maihar	191	221.9	272.5	427.6	546.9
Mandideep	591.5	428.8	535.4	414.2	344.5
Mandigobindgarh	334.4	328.5	443.7	1033.2	903.8
Mandikhera	953.7	715.3	502.9	121.3	127.1
Manesar	647.2	393.2	370.1	384.4	290.2
Meerut	1317.2	1282.1	1572.9	1481.4	1149.9
Moradabad	1312.8		1475.8		986.3
Mumbai	806.6	503.3	653.9	512.4	407.9
Muzaffarnagar	1195	958.4	993.8	1019.8	1286.8
Muzaffarpur	978.1	718.9	672.6	818.4	753.8
Mysuru	483.4	221.1	167.4	254.5	242.8
Nagpur	603.4	590.2	467.3	428.1	463.8
Nandesari	5327.2	5975.3	5809.3	8375	3249.4
Narnaul	505.2	298.7	296.7	246.7	229.2
Nashik	489.4	384.9	364.2	350.5	286.8
Navimumbai	1540.4	1761.9	1183.6	1215.8	1161.6
Noida	1262.1	1046.2	1822.9	1443.4	1735.4
Pali	383.2	313.9	310.9	287.3	195.2
Palwal	1161.5	1090.2	940.9	808.1	978.6
Panchkula	579.5	601.3	774.7	605.3	252.7
Panipat	395.3	225.7	449.2	642.5	396.4
Patiala	758	412	382.4	406.5	416.1
Patna	1053.7	1630.2	978.5	566.8	551.2
Pithampur	1626.1	1105.7	966.5	626	526.8
Pune	1692.9	1088.9	1013.8	1023.5	1117
Rajamahendravaram	608.7	436	566	558.8	677.1
Ramanagara	449.7	319.5	345.8	391.6	312.4
Rohtak	541.9	368.6	591.8	690.8	786.4
Rupnagar	308.9	320.1	322	362.7	315.4
Sagar	612.8	566	671.9	585.9	742
Satna	453.9	315.3	314.1	167.8	157
Shillong	286.7	248.6	179.4	182.4	203.3
Siliguri	628.5	546.4	441.6	457.5	398.6
Singrauli	548.5	535.1	525.8	471.7	715.5
Sirsa	469.4	306.5	352.1	670.6	818.8
Sonipat	974	1398.2	800.2	686.6	789.8
Talcher	1608	2201.5	2228.4	1758.3	1601.4
Thane	813.9	695.7	1198.4	571.7	606.7
Thiruvananthapuram	1122.7	643.1	538	651.7	693.1
Tirupati	531.9	426.1	451.2	441.2	477.8
Udaipur	1010.8	489.9	422.4	520.1	533.9
Ujjain	636.3	546.9	530.3	417.5	415
Vapi	1623.4	1765.5	674	475.3	542.9
Vatva	706.1	574.4	794.4	557.3	811.2
Vijayapura	858.5	704.6
Visakhapatnam	884.5	545.9			508.8
Yadgir	696.1	358.2	105.8	105.1	104.6
Yamunanagar	580.8	283.4	303.1	705.3	456

O3

Concentrations Before/After Lockdowns and % Changes

Download table

city	30 days before lockdown	lockdown phase 1	lockdown phase 2	lockdown phase 3	lockdown phase 4
Agra	8	14.2	26.8	52.3	61.9
Ahmedabad	59.8	71.4	80.7	95.5	79.6
Aizawl	13.6	9.5	5.6	6.1	1.8
Ajmer	87.1	82.3	76.8	86	76.2
Alwar	60.5	61.1	65	69.5	65.2
Amaravati	44.8	41.5	35.6	33.6	44.1
Ambala	38.4	43.8	45.5	74.9	29.5
Amritsar	35.5	25.8	40.1	34	35.5
Ankleshwar	65.7	69.8	48.4	47.9	40.4
Asansol	40.9	45.7	23.7	27.5	17.3
Aurangabad	36.4	43.5	49.9	50.3	50.4
Bagalkot	62.1	61	55.9	55.6	49.1
Bahadurgarh	41.9	48.2	72.7	44.1	56.1
Ballabgarh	14.7	17	17.8	11.3	12.8
Bengaluru	58.1	47.6	37.8	32.9	26.1
Bhiwadi	40.8	56.8	56	59.7	61.8
Bhiwani	120.2	67.4	62.8	74.7	80.6
Bhopal	89.6	77.3	90.3	98.9	78.8
Brajrajnagar	57.6	98.6	103.4	96.6
Bulandshahr	120.9	109.7	89.6	109.8	125.3
Chandigarh	21.6	27.2	33.1	48.8	62.2
Chandrapur	53.9	74.2	52.6	50.9	43.6
Charkhidadri			10	32.2	111.1
Chennai	43	34.5	39.4	43.7	47.6
Chikkaballapur	65.5	60.5	51.7	50.8	47.1
Chikkamagaluru	54.8	62.7	40.6	11.8	19.6
Coimbatore	62	44.4	23.6	27.4	21.8
Delhi	53.1	54.6	61	74.5	66
Dewas	90.2	93.8	82.6	112.2	81.5
Dharuhera	55.6	59.8	71.3	88.7	73.9
Eloor	38.3	33	28.6	30.9	18.6
Faridabad	81.8	72	75.9	85.1	49.5
Fatehabad	41.5	67.9	78.7	200.6	100.2
Gandhinagar	34.4	28.2	39.3	47	38.7
Gaya	77.2	89.6	97.6	106.5	99.5
Ghaziabad	49.6	68.9	43.5	76.4	98.5
Greaternoida	61.5	70.1	78.8	104.8	127.3
Gurugram	76.1	85.7	104.6	132.6	98.8
Guwahati	20.4	47.4	36.4	44.2	38.6
Gwalior	103.4	98.8	109.3	123.9	106.2
Hajipur	12.8	15.2	12.8	12.9	15.5
Hapur	1.8	1.7	1.8	1.9	1.7
Hisar	22.6	20.2	30.4	47.5	37.6
Howrah	56.7	65.4	44.8	59.4	58.5
Hubballi	9.9	1.5		1.5	1.5
Hyderabad	34.9	36.2	31.4	35.1	39.3
Indore	32.9	35.2	37.2	98	90.8
Jabalpur	64.6	70.7	81.3	97.6	82.9
Jaipur	78.4	61.3	67.5	76.9	71.4
Jalandhar	29.6	20.8	28.4	27.1	32.5
Jind	63.6	62.4	72	107.9	95.7
Jodhpur	48.2	57.2	59.9	68.6	64.4
Jorapokhar	53.3	65.4	48.1	70.9	42.3
Kaithal	22.7	19.9	27.2	34.3	36
Kalaburagi	2.9	1.6	1.4
Kalyan	112.4	118	82	91.2	78.6
Kannur	47.8	35.9	17.1	13.3	4.6
Kanpur	51.2	59	61.3	56.5	43.6
Karnal	24.6	29.3	50.7	63.3	50.7
Katni	78.4	86.9	96.3	106.9	92.2
Khanna	19.8	19.9	21	25.6	22.7
Kochi	6.3	1.6	1.4	1.4	1.2
Kolkata	83.9	85.8	43	49.1	30.8
Kollam	24.3	23.2	8.9	18.2	13.5
Kota	55.8	54.4	54.4	61.2	47.1
Kozhikode	8.5	11	10.1	11.4	6.5
Kurukshetra	43.2	51	64.7	73.3	72.6
Lucknow	42.5	32.7	24.3	32.3	40.9
Ludhiana	26.5	31	42.7	40.5	35.4
Mandideep	18.7	20.2	22.6	22.5	22.1
Mandigobindgarh	20.8	21.6	26.1	31.2	42.8
Mandikhera	93.9	66.4	49.5	75	77.1
Manesar	56.7	35.3	49.7		68.3
Meerut	36.2	23.9	25.9	29	34.3
Mumbai	40	33.6	24.1	20.1	16.3
Muzaffarnagar	18.7	18.6	18.7	18.5	18.6
Muzaffarpur	67	92.5	65.6	78.1	95.9
Mysuru	61.3	79.1	63.4	60.3	50.7
Nagpur	71.7	82.4	77.9	85	82.6
Narnaul	13.3	14.3	15	19.7	30
Nashik	77.8	83.1	71.2	66.6	54.1
Navimumbai	59.3	46.1	73	66.8	32.7
Noida	49.8	48	53.1	78.9	92.8
Pali	78.2	68.5	61	64.4	57.9
Palwal	17.1	13.8	13.8	15.4	20.8
Panchkula	48.7	40.9	34.6	68.9	62.2
Panipat	47	44.2	53.9	94.7	88.8
Patiala	18.6	15.8	25.3	28	47.4
Patna	37.7	34.5	35.2	59.9	44.4
Pithampur	16.2	15.7	13.7	15	13.6
Pune	44.9	21.6	20.8	21.9	22.9
Rajamahendravaram	64.4	58.1	52.6	58.8	81.3
Ramanagara	29.9	15.8	12.8	50.8	50.2
Rohtak	28.9	24.6	30.3	41.2	44.8
Shillong	36.5	16.7		16.5	11.7
Siliguri	46	55.8	29	45.3	25.6
Singrauli	70.1	95.7	97.6	96.8	83.1
Sirsa	24.1	24.1	22.5	27	21.1
Sonipat	20.5	14.6	17.2	16.5	26.5
Talcher	38.9	87.4	76.6	79.8
Thane	40.9	49.7	12	37.8	21.5
Thiruvananthapuram	53.3	46.7	39	37.6	32.3
Tirupati	45.9	56.4	55.8	48.3	62.5
Udaipur	68.8	59.5	61.3	59.8	53.8
Ujjain	105.2	89.8	101.2	93.1	66.4
Vapi	6.3	41.8	34.2	17.8	12.2
Varanasi	77.4	55.9	113.3	126.5	96.3
Vatva	31.3	26.3	31.2	43.6	40.2
Visakhapatnam	23.1	33.2	23.4	22.2	31.4
Yadgir	50.1	40.2	19.1	19	18.9
Yamunanagar	49.5	49.7	68.8	47.2	44.7