Highest air pollution Kolkāta, today and tomorrow
Today (29 June): Air quality in Kolkāta is poor. AQI and O3 are poor; PM2.5, NO2, SO2, and PM1 are medium; PM10, CO, and HCHO are good. Pollution peaks around 11:30 AM (O3: 64.8/100).
Tomorrow (30 June 2026): Air quality in Kolkāta is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 7:30 PM (NO2: 58.6/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Kolkata's air quality reflects the flat Ganges delta's enclosed alluvial plain position, with vehicle traffic on the VIP Road and the surrounding manufacturing, jute, and industrial corridor generating elevated PM2.5. The Bay of Bengal monsoon provides effective wet season cleansing from June to September, while the dry winter northeast monsoon transports polluted continental air from the Indo-Gangetic Plain and Kolkata's flat topography with minimal natural dispersal maintains consistently elevated readings, particularly during the October to March dry season throughout the year.
Today - 29 June | Pollution peaks at 11:30
AQI:
Poor
64.8/100
PM2.5 (fine particles):
Medium
42.0/100
PM10 (coarse particles):
Good
13.9/100
NO2 (nitrogen dioxide):
Medium
53.6/100
O3 (ozone):
Poor
64.8/100
SO2 (sulfur dioxide):
Medium
45.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.3/100
PM1 (ultrafine particles):
Medium
45.2/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 19:30
AQI:
Medium
58.6/100
PM2.5 (fine particles):
Medium
41.1/100
PM10 (coarse particles):
Good
12.9/100
NO2 (nitrogen dioxide):
Medium
58.6/100
O3 (ozone):
Medium
45.6/100
SO2 (sulfur dioxide):
Medium
44.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.6/100
PM1 (ultrafine particles):
Medium
43.8/100
Pollen forecast in Kolkāta
View pollen forecastFrequently Asked Questions
Is air quality bad in Kolkāta right now?
On 29 June 2026, overall air quality in Kolkāta is poor. AQI is the main air quality indicator at 64.8/100. Pollution peaks around 11:30 AM (O3: 64.8/100).
Will air quality be worse tomorrow in Kolkāta?
On 30 June 2026, air quality conditions in Kolkāta will be better than today, with AQI forecast at medium at 58.6/100. Pollution peaks around 7:30 PM (NO2: 58.6/100).
Are air quality levels in Kolkāta based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 28 June 2026 at 18:38 CET (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team