Highest air pollution Chennai, today and tomorrow
Today (29 June): Air quality in Chennai is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:30 PM (O3: 51.2/100).
Tomorrow (30 June 2026): Air quality in Chennai is fair. AQI worsens to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 1:30 PM (O3: 35.8/100). 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
Chennai's air quality reflects the flat Coromandel Coast's Tamil Nadu coastal plain position, with vehicle traffic on the Inner Ring Road and the surrounding automotive manufacturing and port operations contributing local sources. Consistent Bay of Bengal sea breezes provide maritime ventilation, while the northeast monsoon's seasonal variation creates distinct wet and dry season cycles and Chennai's flat coastal position generally maintains moderate to elevated South Indian metropolitan readings throughout the year.
Today - 29 June | Pollution peaks at 12:30
AQI:
Medium
51.2/100
PM2.5 (fine particles):
Good
12.7/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
17.7/100
O3 (ozone):
Medium
51.2/100
SO2 (sulfur dioxide):
Good
9.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
13.8/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 13:30
AQI:
Fair
35.8/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Good
18.5/100
O3 (ozone):
Fair
35.8/100
SO2 (sulfur dioxide):
Good
11.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.7/100
PM1 (ultrafine particles):
Good
14.5/100
Pollen forecast in Chennai
View pollen forecastFrequently Asked Questions
Is air quality bad in Chennai right now?
On 29 June 2026, overall air quality in Chennai is medium. AQI is the main air quality indicator at 51.2/100. Pollution peaks around 12:30 PM (O3: 51.2/100).
Will air quality be worse tomorrow in Chennai?
On 30 June 2026, air quality conditions in Chennai will be worse than today, with AQI forecast at fair at 35.8/100. Pollution peaks around 1:30 PM (O3: 35.8/100).
Are air quality levels in Chennai 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 18:36 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