Highest air pollution Colombo, today and tomorrow
Today (29 June): Air quality in Colombo is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:30 PM (O3: 22.3/100).
Tomorrow (30 June 2026): Air quality in Colombo is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 2:30 PM (O3: 18.7/100). 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
Colombo's air quality reflects Sri Lanka's Western Province's flat Indian Ocean coastal position, with vehicle traffic on surrounding roads and the port, manufacturing, and services corridor contributing local sources. Consistent Indian Ocean southwest and northeast monsoon breezes provide seasonal maritime ventilation, while the tropical climate's frequent monsoon rain provides effective atmospheric cleansing and Colombo generally maintains moderate South Asian coastal capital readings throughout most of the year.
Today - 29 June | Pollution peaks at 12:30
AQI:
Fair
22.3/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
22.3/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
8.5/100
PM1 (ultrafine particles):
Good
9.3/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 14:30
AQI:
Good
18.7/100
PM2.5 (fine particles):
Good
9.7/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Good
18.7/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
8.0/100
Pollen forecast in Colombo
View pollen forecastFrequently Asked Questions
Is air quality bad in Colombo right now?
On 29 June 2026, overall air quality in Colombo is fair. AQI is the main air quality indicator at 22.3/100. Pollution peaks around 12:30 PM (O3: 22.3/100).
Will air quality be worse tomorrow in Colombo?
On 30 June 2026, air quality conditions in Colombo will be better than today, with AQI forecast at good at 18.7/100. Pollution peaks around 2:30 PM (O3: 18.7/100).
Are air quality levels in Colombo 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