Updated: March, 2024
The table below presents a summary of AQI Daily bulletins released by the Central Pollution Control Board (CPCB) since 2015. The CSV file contains (available) day-wise city-average AQI value, AQI category, and conditional pollutant information and the image is a calendar plot of the AQI values, along with the average number of stations reporting AQI value in each year. Click on the image to access the full working paper.
- AQI methodology was notified in 2014
- Number of unique cities in the 2015 bulletins = 22
- Number of unique cities in the 2023 bulletins = 271
- CPCB AQI Daily Bulletins archive as PDFs (last accessed March 27, 2024)
- A calculator designed to use monitoring or modeling data to estimate either real time or archived or forecasted AQI — [Link] to download the code, instructions, and videos.
- Code for parsing PDFs and archiving the data is on [github]
- Working papers (click here for PDFs)
- Series #46-2021: 10 Frequently asked questions on air quality index (AQI)
- Series #47-2024: Air Quality Index Analysis for Indian Cities 2015-2023
- Series #48-2024: Data from small monitoring networks is unreliable: Case of Indian cities
- Series #49-2024: How to spot anomalies in data trends: Evaluating AQI data from Indian cities
- Media posts
- Are we going to be dogmatic about large sample sizes? (Medium)
- Can’t control what you can’t measure: Why India is losing to air pollution (India Today)
- Posters
- IGAC 2024 – Uncertainty of Operating Smaller Number of Ambient Monitoring Stations: Indian Cities from 2015 to 2023 (download)
Back to NCAP data repository.
Use the search window (on top-right of the table) to select specific city or state (for example: Assam)
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