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‚Äôs 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

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Agra5943.749.245.561.5
Ahmedabad6034.628.926.226.7
Aizawl40.936.511.715.213.1
Ajmer49.22526.233.149.5
Alwar4524.921.723.833.5
Amaravati24.722.714.718.225.2
Ambala44.725.529.532.223.4
Amritsar36.221.218.834.339.1
Ankleshwar61.943.732.130.223.1
Asansol63.335.826.53526.1
Aurangabad47.9252012.913.8
Bagalkot32.326.619.612.517.5
Bahadurgarh67.83946.757.635.4
Ballabgarh39.842.455.340.549.1
Bathinda42.134.230.151.625.6
Bengaluru41.827.822.922.622.5
Bhiwadi98.840.249.95979.2
Bhiwani4125.826.626.123.5
Bhopal41.333.145.521.220.4
Brajrajnagar64.476.154.460.885.4
Bulandshahr75.150.858.150.268.6
Chandigarh2514.615.320.922.8
Chandrapur31.935.429.627.939
Charkhidadri114.964.7164
Chennai33.223.512.411.124.6
Chikkaballapur36.527.925.725.514.1
Chikkamagaluru32.52821.329.318
Coimbatore38.225.82423.822.1
Damoh33.322.92115.716.7
Delhi74.242.146.555.660.3
Dewas4541.451.22527.9
Dharuhera70.739.93633.432.4
Eloor2114.831.68.37.3
Ernakulam33.72017.116.614.1
Faridabad69.536.240.85599.7
Fatehabad50.331.84860.349.7
Gandhinagar36.228.522.225.520.8
Gaya54.941.736.641.642.4
Ghaziabad85.945.753.453.761.6
Greaternoida71.435.849.543.555.9
Gurugram63.436.544.948.553.4
Guwahati81.287.127.326.819.3
Gwalior54.33634.833.329.3
Hajipur43.333.618.727.618.8
Hapur45.137.339.942.445.4
Hisar61.235.650.154.654.1
Howrah67.133.919.721.110.9
Hubballi30.327.217.513.6
Hyderabad36.934.128.127.832.3
Indore46.838.733.618.618
Jabalpur46.833.2363030.7
Jaipur42.224.932.836.349.1
Jalandhar47.922.833.544.347.7
Jind60.74241.830.852.8
Jodhpur77.350.147.95283.8
Jorapokhar70.867.727.750.350.6
Kaithal36.522.336.54342.3
Kalaburagi44.736.333.226.729.5
Kalyan70.266.726.725.918.3
Kannur48.438.331.928.324.9
Kanpur61.444.848.543.851.3
Karnal56.133.851.951.662.2
Katni48.629.929.929.641.9
Khanna27.419.325.234.638.1
Kochi43.123.618.619.118.2
Kolkata60.534.317.218.617.6
Kollam45.642.732.829.229.4
Kota42.728.627.329.436.7
Kozhikode29.129.82522.820.4
Kurukshetra50.627.940.860.455.5
Lucknow69.256.554.25267.1
Ludhiana39.617.222.435.341
Maihar27.516.519.619.423.8
Mandideep3324.140.923.728.5
Mandigobindgarh46.128.330.657.467.6
Mandikhera51.13237.939.355.5
Manesar60.825.632.73341.4
Meerut64.246.653.855.459.4
Moradabad67.119.731.3
Mumbai4527.823.322.627
Muzaffarnagar6842.348.170.373
Muzaffarpur83.46728.840.122.4
Mysuru21.11916.918.813.5
Nagpur32.922.925.22024.1
Nandesari42.728.137.961.218
Narnaul48.425.527.629.422.5
Nashik38.733.32421.617.1
Navimumbai59.935.117.115.28.5
Noida72.639.15249.350.3
Pali5032.229.434.156.2
Palwal6139.367.641.314.6
Panchkula23.315.521.727.328.9
Panipat60.232.55357.153.1
Patiala30.815.722.725.940.9
Patna67.35125.746.530.9
Pithampur39.235.834.622.123.6
Pune54.823.221.321.221.4
Rajamahendravaram26.121.38.512.124.9
Ramanagara2822.921.223.111.9
Ratlam52.856.267.246.381.8
Rohtak63.73552.458.746
Rupnagar55.9223373.279.5
Sagar27.623.427.828.434
Satna21.29.913.322.120.7
Shillong31.94212.418.413.9
Siliguri68.167.824.229.121
Singrauli65.365.761.96069.9
Sirsa32.822.942.648.246
Sonipat35.422.63740.440.3
Talcher4350.166.859.722.8
Thiruvananthapuram36.422.61616.713.7
Tirupati29.921.616.616.623.7
Udaipur42.425.926.228.737.9
Ujjain46.342.455.62521.8
Vapi79.140.440.331.521.6
Varanasi62.355.633.136.741.3
Vatva73.428.134.931.242.3
Vijayapura46.850.420.3
Visakhapatnam33.522.514.712.524.7
Yadgir29.531.827.523.319.6
Yamunanagar60.434.938.655.760.8

PM10

Concentrations Before/After Lockdowns and % Changes

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Ahmedabad128.58477.676.777.4
Aizawl49.844.415.718.518.3
Ajmer105.458.363.664.8139.4
Alwar86.351.743.857.469.3
Amaravati43.245.735.139.175.2
Ambala96.95572.1
Amritsar100.560.86577.574.3
Ankleshwar132.593.877.491.866.6
Asansol120.488.754.567.354.6
Aurangabad81.344.24241.943.2
Bagalkot70.650.648.943.247.7
Bahadurgarh106.866.29495.2123.4
Ballabgarh107.161.981.59599.2
Bathinda107.338.761.5126.860.6
Bengaluru87.249.753.376.380.9
Bhiwadi181.682.6105.1117200.3
Bhiwani10254.2117.9120136.2
Bhopal129.894.7105.47485.7
Brajrajnagar93.1170.2116103.9101.5
Bulandshahr145.4117.4165.6135.8241.9
Chandigarh66.53642.456.783.3
Chandrapur66.466.95649.394.9
Charkhidadri177.6132.1213.9
Chennai46.991.6407.4
Chikkaballapur87.965.650.168.352.2
Chikkamagaluru64.559.955.747.745.5
Coimbatore53.726.825.630.335.7
Damoh90.764.856.761.775.5
Delhi158.486113.2127173.9
Dewas126.991.7104.883.5112.6
Dharuhera172.263.650.446.249.5
Eloor85.16050.454.754.2
Ernakulam64.440.734.139.338.5
Faridabad190.9100.3129.8128.5185.6
Fatehabad8458.3130134.3164
Gandhinagar90.767.465.769.964.6
Gaya74.779.165.773.992
Ghaziabad167.5101.2129124.3203
Greaternoida171.691.3133.9114.8226.9
Gurugram138.678103.9106.6152.1
Guwahati157.2166.44145.734.1
Gwalior109.996.497.788.4139.6
Hajipur148.387.688.1136.691.3
Hapur105.6117.2161.5141.7168.7
Hisar108.672.5141.3137.9169
Howrah142.675.938.843.433.9
Hubballi83.158.645.655.9
Hyderabad87.663.857.363.9108.1
Indore141.799.510889.7114.3
Jabalpur12478.185.967.8116.2
Jaipur9859.584.180.3140.4
Jalandhar82.439.157.676.287.1
Jind9265.7119.998.4151.4
Jodhpur16495.196111.9187.3
Jorapokhar140.194.3101.6108.7156.9
Kaithal91.355.799.3119.3155.2
Kalaburagi9375.360.5
Kalyan198.4164.978.2100.278.9
Kannur83.96250.446.748.3
Karnal111.761.574.677.9141
Katni119.889.795.687.6163.2
Khanna61.641.755.687.4100
Kochi121.941.632.13638.1
Kolkata113.662.134.439.340.8
Kollam70.457.345.241.246.9
Kota89.77259.160.484.4
Kozhikode65.145.541.738.339.9
Kurukshetra95.456.496.1122146.3
Ludhiana82.437.352.373.989.8
Maihar52.340.847.744.151.1
Mandideep100.746.866.241.156.8
Mandigobindgarh104.947.283.8133.1142.7
Mandikhera110.884.993.781.3159.9
Manesar129.367.9104.590.7149.5
Meerut136.1117.5162.9138.1196.9
Moradabad103.834.170.7
Mumbai135.372.255.167.181.9
Muzaffarnagar133.7100.1119.4134.5174.9
Mysuru483635.244.534.1
Nagpur65.445.946.533.440.5
Nandesari130.998185.5220.2287.6
Narnaul104.569.191.773.496.1
Nashik84.652.448.954.941.2
Navimumbai139.773.459.371.849.3
Noida150.981.5116.9112.6173
Pali124.876.281.975.4139.7
Palwal134.699.8130.299.5164.1
Panipat179.298.8199202.9238.7
Patiala72.23663.274.1102.2
Patna132.1111.872.19994.4
Pithampur134.4104.2116.1115.2136
Pune91.437.234.133.935.8
Rajamahendravaram59.444.125.23775.3
Ramanagara56.743.145.858.437.9
Ratlam121.682.9102.9110.6166.9
Rupnagar99.634.654.996.588.9
Sagar67.451.35665.9100.5
Satna95.960.774.265.472.2
Shillong45.46616.626.419.4
Siliguri118.5107.737.241.638.5
Singrauli140.3207.1165.4170281.6
Sirsa80.659.1122.1122.7147.4
Sonipat144.178.5147.9183.1168.1
Talcher71.996.631.474.644.8
Thane105.441.444.266.568.8
Thiruvananthapuram60.246.433.940.534.7
Tirupati5538.831.132.665.9
Udaipur86.953.854.959.7103.2
Ujjain112.896.6105.270.6101.9
Vapi143.780.870.667.953.2
Vatva178.96774.664.193.4
Vijayapura58.580.6
Visakhapatnam85.460.753.444.695.8
Yadgir61.658.360.149.375.5
Yamunanagar117.46992.6122143

NO2

Concentrations Before/After Lockdowns and % Changes

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Agra52.345.939.62930.3
Ahmedabad48.12817.818.422.2
Aizawl3.12.63.73.73.7
Ajmer21.78.211.814.19
Alwar37.126.325.92623.8
Amaravati94.64.56.58.2
Ambala25.313.918.62626.7
Amritsar12.711.416.617.512.8
Ankleshwar12.86.35.34.44.4
Asansol33.122.9824.510.5
Aurangabad19.923.412.820.317.6
Bagalkot24.316.56.72628.9
Bahadurgarh20.418.420.624.317
Ballabgarh16.923.816.44.85.1
Bathinda18.118.418.318.418.5
Bengaluru24.612.713.516.315.8
Bhiwadi64.822.617.731.251.5
Bhiwani22.116.216.316.116.7
Bhopal30.314.111.310.67.2
Brajrajnagar15.5526.2
Bulandshahr31.716.814.420.333.3
Chandigarh1610.711.813.66.7
Chandrapur18.326.716.514.216.9
Chennai11.811.79.47.112.9
Chikkaballapur13.11114.515.114.2
Chikkamagaluru14.821.52435.321.1
Coimbatore41.762.756.423.736.3
Damoh1515.11515.115.1
Delhi39.82019.222.431.1
Dewas2415.115.311.89.7
Dharuhera44.58.815.228.825.5
Eloor12.76.75.26.234.7
Ernakulam3.63.33.2
Faridabad12.710.612.315.312.8
Fatehabad10.86.110.115.19.9
Gandhinagar125.63.43.33.6
Gaya77.515.315.211.3
Ghaziabad48.324.626.728.733.5
Greaternoida46.815.417.520.830
Gurugram31.316.817.328.938.8
Guwahati23.116.16.810.610.5
Gwalior21.89.710.115.718.9
Hajipur23.917.399.85.7
Hapur54.85754.454.853.9
Hisar31.218.220.62222.8
Howrah45.716.612.912.615.1
Hubballi3117.120.654.2
Hyderabad27.817.623.323.726.4
Indore80.43940.241.238.3
Jabalpur42.821.924.118.723.8
Jaipur35.51413.91520.4
Jalandhar9.49.57.66.48.6
Jind2711.316.320.928.8
Jodhpur39.220.12219.219.2
Jorapokhar111111.110.710.5
Kaithal22.816.917.122.723.7
Kalaburagi30.813.76.99.79.6
Kalyan25.811.76.98.28.1
Kannur17.613.41416.216.2
Kanpur45152023.140.1
Karnal19.2710.711.315.4
Katni38.718.915.814.821.4
Khanna12.66.36.67.38.8
Kochi10.64.26.314.120.7
Kolkata41.312.88.28.47.5
Kollam19.611.610.911.811.9
Kota36.713.311.920.87.9
Kozhikode20.38.8910.69.4
Kurukshetra28.210.517.422.518.6
Lucknow30.414.315.914.815.2
Ludhiana41.417.341.835.219.6
Maihar37.335.829.24.117.2
Mandideep20.912.214.711.913.8
Mandigobindgarh10.813.47.58.18.4
Mandikhera13.415.537.525.217.3
Manesar43.2193.94.74.7
Meerut24.813.921.323.529
Moradabad30.910.321.3
Mumbai37.59.87.39.87.5
Muzaffarnagar12.76.47.310.512.6
Muzaffarpur24.124.124.124.124
Mysuru30.311.312.318.619.5
Nagpur53.136.220.118.521.6
Nandesari62.430.656.255.259.9
Nashik34.822.220.418.913.6
Navimumbai47.81310.110.511.8
Noida32.313.916.118.122.6
Pali25.419.110.69.710.2
Palwal10.66.46.21017.6
Panchkula18.41820.829.725.7
Panipat7750.850.857.279.5
Patiala7.13.76.86.911.8
Patna60.244.115.621.416.5
Pithampur14.799.28.28.1
Pune17.48.88.18.18.5
Rajamahendravaram17.57.56.98.211
Ramanagara13.91110.926.923.2
Ratlam29.511.48.95.118.3
Rupnagar7.58.410.26.93.7
Sagar21.811.510.311.113.8
Shillong3.12.62.82.62.9
Siliguri51.235.52324.724.8
Singrauli43.238.638.340.942.3
Sirsa4.74.74.75.27.5
Sonipat49.452.951.26448.9
Talcher66.419.616.616.8
Thane43.112.58.66.55.9
Thiruvananthapuram18.787.99.810.3
Tirupati25.267.67.69.4
Udaipur20.46.3713.99.9
Ujjain22.811.99.77.56.1
Vapi22.616.5198.82.9
Varanasi20.832.631.62926.4
Vatva49.122.814.16.36.8
Visakhapatnam31.828.724.114.727.6
Yadgir177.89.410.59.5
Yamunanagar39.424.223.817.326.6

SO2

Concentrations Before/After Lockdowns and % Changes

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Agra27.128.32932.927.3
Ahmedabad57.527.327.311.8
Aizawl5.67.26.58.610.4
Ajmer7.26.18.69.17.8
Alwar23.519.511.910.410.4
Amaravati20.12013.210.210.7
Ambala17.612.120.225.823.4
Amritsar12.57.38.69.420.5
Ankleshwar43.710.98.56.86.8
Asansol19.514.8106.94.6
Aurangabad7.76.75.466.2
Bagalkot8.96.85.34.74.6
Bahadurgarh29.75825.49.24.6
Ballabgarh75.19.46.811.1
Bathinda8.69.6109.510.5
Bengaluru7.36.87.17.25
Bhiwadi40.315.37.914.226.1
Bhiwani47.733.916.116.213.5
Bhopal18.913.614.910.817.9
Brajrajnagar5.54.74.766.9
Bulandshahr29.52619.113.720.5
Chandigarh10.711.412.112.412.7
Chandrapur18.819.221.22529.3
Chennai10.87.566.28.7
Chikkaballapur15.617.315.116.811.1
Chikkamagaluru3.13.12.82.52.6
Coimbatore96.86.666.3
Delhi14.61416.313.415.9
Dewas11.812.716.110.59
Dharuhera22.815.412.513.39.9
Eloor6.15.45.665.6
Ernakulam3.73.33.22.82.6
Faridabad14.76.59.45.84.3
Fatehabad8.711.212.31314
Gandhinagar10.95.66.87.37.9
Gaya13.211.213.611.711.7
Ghaziabad17.125.112.314.526.9
Greaternoida1413.61212.417.6
Gurugram9.713.99.88.710.7
Guwahati13.716.415.214.714.8
Gwalior20.118.119.924.921.6
Hajipur4.88.28.59.29.6
Hapur5.98.47.85.14.5
Hisar13.58.212.313.518.2
Howrah24.212.18.49.38.2
Hubballi3.73.612.9337
Hyderabad7.38.86.46.68
Indore11.16.88.57.37.9
Jabalpur8.76.87.66.97.2
Jaipur14.913.31313.112.1
Jalandhar9.711.18.79.46.9
Jind21.826.323.226.645
Jodhpur9.87.45.14.87.1
Jorapokhar32.433.628.226.623
Kaithal76.26.26.110.5
Kalaburagi2514.712.9
Kalyan29.78135.963.1128
Kannur3.12.72.32.32.2
Kanpur13.215.315.211.510.2
Karnal41.432.537.726.146.9
Katni96.36.915.623.1
Khanna16.99.35.69.721.8
Kochi20.22016.61312
Kolkata12.29.66.86.65
Kollam9.12.52.52.52.4
Kota10.610.38.39.58.5
Kozhikode4.332.22.42.6
Kurukshetra19.212.617.412.639.2
Lucknow6.76.37.36.66.2
Ludhiana12.14.87.78.515.9
Maihar7.37.27.37.36.9
Mandideep10.48.510.710.914.7
Mandigobindgarh17.66.47.231.827.7
Mandikhera14.215.715.516.516.9
Manesar16.131.920.920.49.8
Meerut13.712.110.18.914.8
Moradabad19.110.57.7
Mumbai15.412.524.636.218.8
Muzaffarnagar22.623.225.523.733.9
Muzaffarpur21.424.717.916.915.4
Mysuru4.12.52.82.43.5
Nagpur12.743.14.64.6
Nandesari9.433311.313.3
Narnaul18.35.74.745.47.6
Nashik5.33.32.932.7
Navimumbai27.725.110.710.57.7
Noida12.812.611.712.817.4
Pali64.33.33.43.3
Palwal8.519.111.315.26.8
Panchkula11.810.216.943.919.5
Panipat21.211.912.432.154.5
Patiala6.84.55.46.614.3
Patna10.811.78.58.46.4
Pithampur15.2811.210.611.9
Pune48.424.522.622.523.7
Rajamahendravaram9.17.45.76.98.6
Ramanagara20.617.620.92724.9
Ratlam66.79.24.810.29.9
Rohtak10.38.69.49.56.3
Rupnagar8.98.88.49.812.5
Sagar2.32.13.13.23.2
Satna14.68.88.97.78
Shillong4.67.56.87.19.1
Singrauli52.758.170.152.249.5
Sirsa383142.517.821.7
Sonipat27.927.927.927.127.4
Talcher40.464215.724.5
Thane46.767.513.15.7
Thiruvananthapuram86.36.36.66.9
Tirupati6.65.66.35.54.5
Udaipur12.99.46.510.78.2
Ujjain10.18.99.16.47.8
Vapi2017.46.623.226.7
Varanasi23.732.232.833.465.1
Vatva47.687.44.67
Vijayapura5.16.7
Visakhapatnam9.59.27.68.69
Yadgir21.119.919.719.323.2
Yamunanagar18.210.716.714.722.4

CO

Concentrations Before/After Lockdowns and % Changes

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Agra1246.41092.1476580.1499.8
Ahmedabad438.6373.1438.2460.5543.3
Aizawl412.4338268315.6304.3
Ajmer788.7593.8777.9556.5884
Alwar686.8589.4526.9652.2603.6
Amaravati512.41228.9417.5
Ambala368.9207.9287.6260305
Amritsar684.5786.6743.4738.2630.6
Ankleshwar1103.4803.1763.7749.8783.9
Asansol572.1507.9336.2475.5602
Aurangabad650.1556.7500.7489.5498.9
Bagalkot878.62420.71181.41664.6761.7
Bahadurgarh601.2422.7499.5630.1465
Ballabgarh783.3871.51129.81150.31053.1
Bathinda1968.41956.31506.7392.8473.6
Bengaluru929.6779.9735.9825.9827.8
Bhiwadi752.8447.5492.9738.9680.2
Bhiwani1079.6435.2371461.9380
Bhopal571.3450455.5334.5300.6
Brajrajnagar167.8307.7365.3382.1
Bulandshahr1158.21099.9920.1717.5817.8
Chandigarh510.9403.9451.2484.1389.2
Chandrapur280.7344336.8287.7405.1
Charkhidadri653.8449.8586.7
Chennai811.7635.3667.2696.6983.8
Chikkaballapur732.6722.2803.2813801.7
Chikkamagaluru488.9406372.5630384.1
Coimbatore730.8569.9965.6953.8937.8
Damoh283.6292.1293.6312.4298.9
Delhi864.7621.4857.3848.8973.1
Dewas803731908.7608.8429.5
Dharuhera1646.3586.91142.2438.2288.3
Eloor415.9280.3299304.6320.2
Ernakulam1574.61272.21414.520742053.1
Faridabad972.7708.2563.2878.4725.2
Fatehabad399236.3293.3273.2319.8
Gandhinagar758.8725.1703.3577.4632.1
Gaya765.38121072.7862.3793.3
Ghaziabad980.7742.2817.2738853.6
Greaternoida1828.52407.71638.31050.8947.1
Gurugram1257.3619.3719.89901127.7
Guwahati399.1418.4332.4352.4444.6
Gwalior649397.9483.2583.4465.8
Hajipur698.2620.6613.9735.8535.5
Hapur1043.71652.61929.11288.1
Hisar660.6568.8770.6310.9382.8
Howrah525.1347.9365.5359.2288.3
Hubballi401.8309389.5905.5
Hyderabad505.2448.1440.5436.4382.9
Indore536.5272.7297.4230.3209.6
Jabalpur591.6354.3537.3420.7515.2
Jaipur871.5539.3611685.7816.2
Jalandhar682.4378364545.2568.9
Jind435.8309.2600.2886.61257.8
Jodhpur1002.1735.5568.4586.9784.4
Jorapokhar1949.61825.91376.81186.9902.4
Kaithal577.5368.3476.8491583.5
Kalaburagi394.8228155.8
Kalyan824.7577259.3219.5200.4
Kannur397.4197.2218.6285.6263.2
Karnal500.1237.4403.2411463.8
Katni416.8373.4425.3606664.7
Kochi1324.3893.91034.31328.71401.8
Kolkata730.5575.2421.2391.5317.2
Kollam540.9426.1394.5518.9596.2
Kota454.3489.4518414.7504.7
Kozhikode1012.7621313.2276.6496
Kurukshetra471.2246.9337.2486.8361.3
Lucknow1120.21001.41007.6904.41061.6
Ludhiana460.7177271.4278.8375.9
Maihar191221.9272.5427.6546.9
Mandideep591.5428.8535.4414.2344.5
Mandigobindgarh334.4328.5443.71033.2903.8
Mandikhera953.7715.3502.9121.3127.1
Manesar647.2393.2370.1384.4290.2
Meerut1317.21282.11572.91481.41149.9
Moradabad1312.81475.8986.3
Mumbai806.6503.3653.9512.4407.9
Muzaffarnagar1195958.4993.81019.81286.8
Muzaffarpur978.1718.9672.6818.4753.8
Mysuru483.4221.1167.4254.5242.8
Nagpur603.4590.2467.3428.1463.8
Nandesari5327.25975.35809.383753249.4
Narnaul505.2298.7296.7246.7229.2
Nashik489.4384.9364.2350.5286.8
Navimumbai1540.41761.91183.61215.81161.6
Noida1262.11046.21822.91443.41735.4
Pali383.2313.9310.9287.3195.2
Palwal1161.51090.2940.9808.1978.6
Panchkula579.5601.3774.7605.3252.7
Panipat395.3225.7449.2642.5396.4
Patiala758412382.4406.5416.1
Patna1053.71630.2978.5566.8551.2
Pithampur1626.11105.7966.5626526.8
Pune1692.91088.91013.81023.51117
Rajamahendravaram608.7436566558.8677.1
Ramanagara449.7319.5345.8391.6312.4
Rohtak541.9368.6591.8690.8786.4
Rupnagar308.9320.1322362.7315.4
Sagar612.8566671.9585.9742
Satna453.9315.3314.1167.8157
Shillong286.7248.6179.4182.4203.3
Siliguri628.5546.4441.6457.5398.6
Singrauli548.5535.1525.8471.7715.5
Sirsa469.4306.5352.1670.6818.8
Sonipat9741398.2800.2686.6789.8
Talcher16082201.52228.41758.31601.4
Thane813.9695.71198.4571.7606.7
Thiruvananthapuram1122.7643.1538651.7693.1
Tirupati531.9426.1451.2441.2477.8
Udaipur1010.8489.9422.4520.1533.9
Ujjain636.3546.9530.3417.5415
Vapi1623.41765.5674475.3542.9
Vatva706.1574.4794.4557.3811.2
Vijayapura858.5704.6
Visakhapatnam884.5545.9508.8
Yadgir696.1358.2105.8105.1104.6
Yamunanagar580.8283.4303.1705.3456

O3

Concentrations Before/After Lockdowns and % Changes

India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality
India Covid Air Quality India Covid Air Quality India Covid Air Quality India Covid Air Quality

Download table

city30 days before lockdownlockdown phase 1lockdown phase 2lockdown phase 3lockdown phase 4
Agra814.226.852.361.9
Ahmedabad59.871.480.795.579.6
Aizawl13.69.55.66.11.8
Ajmer87.182.376.88676.2
Alwar60.561.16569.565.2
Amaravati44.841.535.633.644.1
Ambala38.443.845.574.929.5
Amritsar35.525.840.13435.5
Ankleshwar65.769.848.447.940.4
Asansol40.945.723.727.517.3
Aurangabad36.443.549.950.350.4
Bagalkot62.16155.955.649.1
Bahadurgarh41.948.272.744.156.1
Ballabgarh14.71717.811.312.8
Bengaluru58.147.637.832.926.1
Bhiwadi40.856.85659.761.8
Bhiwani120.267.462.874.780.6
Bhopal89.677.390.398.978.8
Brajrajnagar57.698.6103.496.6
Bulandshahr120.9109.789.6109.8125.3
Chandigarh21.627.233.148.862.2
Chandrapur53.974.252.650.943.6
Charkhidadri1032.2111.1
Chennai4334.539.443.747.6
Chikkaballapur65.560.551.750.847.1
Chikkamagaluru54.862.740.611.819.6
Coimbatore6244.423.627.421.8
Delhi53.154.66174.566
Dewas90.293.882.6112.281.5
Dharuhera55.659.871.388.773.9
Eloor38.33328.630.918.6
Faridabad81.87275.985.149.5
Fatehabad41.567.978.7200.6100.2
Gandhinagar34.428.239.34738.7
Gaya77.289.697.6106.599.5
Ghaziabad49.668.943.576.498.5
Greaternoida61.570.178.8104.8127.3
Gurugram76.185.7104.6132.698.8
Guwahati20.447.436.444.238.6
Gwalior103.498.8109.3123.9106.2
Hajipur12.815.212.812.915.5
Hapur1.81.71.81.91.7
Hisar22.620.230.447.537.6
Howrah56.765.444.859.458.5
Hubballi9.91.51.51.5
Hyderabad34.936.231.435.139.3
Indore32.935.237.29890.8
Jabalpur64.670.781.397.682.9
Jaipur78.461.367.576.971.4
Jalandhar29.620.828.427.132.5
Jind63.662.472107.995.7
Jodhpur48.257.259.968.664.4
Jorapokhar53.365.448.170.942.3
Kaithal22.719.927.234.336
Kalaburagi2.91.61.4
Kalyan112.41188291.278.6
Kannur47.835.917.113.34.6
Kanpur51.25961.356.543.6
Karnal24.629.350.763.350.7
Katni78.486.996.3106.992.2
Khanna19.819.92125.622.7
Kochi6.31.61.41.41.2
Kolkata83.985.84349.130.8
Kollam24.323.28.918.213.5
Kota55.854.454.461.247.1
Kozhikode8.51110.111.46.5
Kurukshetra43.25164.773.372.6
Lucknow42.532.724.332.340.9
Ludhiana26.53142.740.535.4
Mandideep18.720.222.622.522.1
Mandigobindgarh20.821.626.131.242.8
Mandikhera93.966.449.57577.1
Manesar56.735.349.768.3
Meerut36.223.925.92934.3
Mumbai4033.624.120.116.3
Muzaffarnagar18.718.618.718.518.6
Muzaffarpur6792.565.678.195.9
Mysuru61.379.163.460.350.7
Nagpur71.782.477.98582.6
Narnaul13.314.31519.730
Nashik77.883.171.266.654.1
Navimumbai59.346.17366.832.7
Noida49.84853.178.992.8
Pali78.268.56164.457.9
Palwal17.113.813.815.420.8
Panchkula48.740.934.668.962.2
Panipat4744.253.994.788.8
Patiala18.615.825.32847.4
Patna37.734.535.259.944.4
Pithampur16.215.713.71513.6
Pune44.921.620.821.922.9
Rajamahendravaram64.458.152.658.881.3
Ramanagara29.915.812.850.850.2
Rohtak28.924.630.341.244.8
Shillong36.516.716.511.7
Siliguri4655.82945.325.6
Singrauli70.195.797.696.883.1
Sirsa24.124.122.52721.1
Sonipat20.514.617.216.526.5
Talcher38.987.476.679.8
Thane40.949.71237.821.5
Thiruvananthapuram53.346.73937.632.3
Tirupati45.956.455.848.362.5
Udaipur68.859.561.359.853.8
Ujjain105.289.8101.293.166.4
Vapi6.341.834.217.812.2
Varanasi77.455.9113.3126.596.3
Vatva31.326.331.243.640.2
Visakhapatnam23.133.223.422.231.4
Yadgir50.140.219.11918.9
Yamunanagar49.549.768.847.244.7