AQI Analysis for Indian Cities from 2015 to 2023

This research project is presented at the iCACGP-IGAC Conference 2024, Kuala Lumpur. Abstract

Detailed report can be accessed here: AQI Analysis for Indian cities from 2015-2023

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This repository contains analysis of AQI Daily bulletins released by the Central Pollution Control Board (CPCB) since 2015. These daily bulletins can be currently obtained here: CPCB Daily AQI Bulletins

The data contains (available) day-wise city-average AQI value, AQI category, and conditional pollutant information. This data for all cities can be obtained in the AllIndiaBulletins_master.csv from data/Processed folder.

City wise AQI bulletins CSV and calendar plots can be obtained on UrbanEmissions website: Link

Codes

1. pdfparser.py: Extracted tables from all AQI bulletins from 2015.

2. clean.py: Cleans all CSVs extracted and creates AllIndiaBulletins_Master.csv. Then manually cleaned City column for duplicates. (Chihuahua problem)

3. cal_heatmaps.py: Creates calendar heatmaps for each city.

4. aqi_research.py: Creates CSVs and plots that answers a few research questions as follows:

   1. total unique cities by year
   2. total unique cities by month
   3. total number of monitoring stations by year
   4. total number of monitoring stations by month
   5. Average number of monitoring stations per city by year
   6. Average number of monitoring stations per city by months

5. Dr. Nipun Bhatra produced the plots that capture the uncertainty in AQI values with smaller number of stations. Link to the code. More explanation of this uncertainty can be found here: Document

6. Calendar plot of the AQI values is produced for each city, along with the average number of stations reporting AQI value in each year. The following is a sample calendar plot for the city of Hyderabad.

To produce such calendar heat maps, refer to our Climate Visuals repository: Calendar Heatmap