India NCAP – Reanalyzed Annual Average PM2.5 Concentrations 1998-2022

Updated: April, 2024

131 NCAP non-attainment cities are grouped into 104 airsheds. Of these airsheds, 73 contain only one city; 18 contain two cities, and nine contain three cities. Four airsheds – Delhi, Mumbai, Indore, and Chandigarh contain 10, 8, 5, and 5 cities respectively. An additional 33 cities, not on the NCAP list are also part of these airsheds.

In the table below, for each of the designated airsheds, reanalyzed PM2.5 concentrations were extracted from WUSTL version-4 database available at 0.01 degree resolution for the period of 1998 to 2022 (25 years). Below:

• The CSV file contains annual average data (in µg/m3) at the grid level (airshed grid information is available here)
• Image is a composite of 9 years for reference.

Reanalyzed PM2.5 concentrations data (in µg/m3) is also available for the Indian Subcontinent covering the area between 67-99° longitudes and 7-39° latitudes at 0.1° grid resolution

• [Link] to global database (v4) at WUSTL
• Gridded (csv) annual averages for 1998 to 2022 [download file – 3MB]
• Gridded (csv) monthly averages for 1998 to 2022 [download file – 44MB]
• For annual averages only [download calculator] to extract 0.1° data for 3 x 3 grids around the city center and plot the averages for 1998 to 2022 (user needs to activate MS-Excel macros)

Download airshed size information and associated GIS files here.

Back to India NCAP Repository.

Reanalyzed PM2.5 Concentrations @0.01deg Resolution (1998-2022)