Sri Lanka · Asia/Colombo
Colombo air quality
80
Moderate
CAMS model-based US AQI estimate
Highest pollutant sub-index: PM2.5
Model values for Oct 02 12:30 +0530 · CAMS model estimate, may differ from monitoring stations and street-level conditions
Data may be delayed
AirNow by Skymory is an independent service; it is not affiliated with or endorsed by U.S. EPA or the official AirNow service.
Pollutants now (modeled)
- PM2.5Fine particles25.1 µg/m³
- PM10Coarse particles33.4 µg/m³
- O3Ozone134.5 µg/m³
- NO2Nitrogen dioxide11.9 µg/m³
- SO2Sulphur dioxide20.7 µg/m³
- COCarbon monoxide357.7 µg/m³
Weather in Colombo
See the temperature, rain and wind forecast for Colombo.
Colombo weather forecast on SkymoryNext 24 hours: PM2.5
Pollutant forecast
Hourly model samples in local time; no interpolation.
| Local time | PM2.5 µg/m³ | PM10 µg/m³ | O3 µg/m³ | NO2 µg/m³ | SO2 µg/m³ | CO µg/m³ |
|---|---|---|---|---|---|---|
| 21.9 | 28.9 | 118.8 | 12.1 | 16.9 | 343.3 | |
| 20.3 | 27.0 | 103.9 | 14.1 | 16.0 | 336.7 | |
| 18.6 | 25.1 | 84.6 | 17.1 | 14.5 | 337.5 | |
| 18.7 | 25.0 | 69.2 | 21.9 | 12.6 | 396.2 | |
| 19.3 | 25.2 | 56.4 | 28.9 | 11.2 | 506.6 | |
| 21.1 | 25.9 | 45.0 | 34.6 | 10.6 | 620.4 | |
| 19.9 | 23.9 | 42.3 | 33.5 | 8.6 | 645.1 | |
| 18.9 | 22.7 | 40.0 | 30.8 | 7.4 | 633.7 | |
| 18.1 | 21.6 | 36.4 | 29.2 | 7.8 | 632.5 | |
| 18.3 | 21.5 | 28.8 | 32.2 | 6.3 | 733.7 | |
| 18.3 | 21.4 | 25.9 | 31.6 | 6.5 | 742.0 | |
| 17.2 | 20.4 | 27.0 | 28.4 | 7.6 | 684.8 | |
| 15.4 | 18.7 | 30.2 | 23.4 | 7.3 | 594.7 | |
| 10.9 | 13.9 | 31.9 | 19.0 | 6.4 | 508.3 | |
| 10.0 | 13.1 | 31.7 | 16.2 | 6.5 | 440.0 | |
| 9.9 | 13.0 | 27.5 | 16.0 | 7.2 | 420.2 | |
| 11.0 | 14.1 | 21.3 | 18.4 | 8.1 | 453.2 | |
| 13.9 | 17.0 | 20.1 | 21.2 | 10.5 | 548.6 | |
| 17.1 | 20.9 | 41.8 | 22.2 | 12.5 | 625.1 | |
| 14.9 | 20.2 | 64.2 | 14.3 | 16.7 | 404.9 | |
| 14.1 | 19.9 | 66.9 | 13.4 | 23.3 | 342.9 | |
| 15.2 | 21.7 | 76.3 | 13.1 | 27.5 | 319.5 | |
| 16.2 | 22.5 | 88.3 | 13.4 | 29.8 | 315.3 | |
| 16.7 | 22.1 | 101.4 | 13.5 | 30.7 | 324.5 |
Data details: about this air quality estimate
Values are modeled by the Copernicus Atmosphere Monitoring Service (CAMS) global forecast, extracted and converted by Skymory for this city. They are model estimates on a coarse grid, not measurements from monitoring stations, and they do not resolve street-level exposure.
- Model initialization: 2026-10-01T12:00:00+00:00. Values valid: Oct 02 12:30 +0530. Retrieved: 2026-10-02T04:35:15.659218+00:00.
- Page generated from a snapshot with data state STALE_USABLE; model age 19.9 hours at generation.
- Nearest valid 0.4° model grid cell, about 22 km from the city point.
- Gases are converted with matching model-level 137 temperature, humidity, surface pressure (lnsp) and hybrid coefficients; particulate matter is read directly from the surface fields.
- AQI estimate completeness: COMPLETE (COMPLETE means all six pollutants have a complete model window).
The AQI estimate applies EPA breakpoints (May 2026) to explicit trailing model windows (PM 24 h, CO 8 h, NO2 1 h, SO2 and O3 per EPA rules). It is not a station observation, official daily maximum or NowCast, and the official AQI field remains unavailable.
Averaging windows used
- CO: 8h window
- NO2: 1h window
- O3: 1h, 8h window
- PM10: 24h window
- PM2.5: 24h window
- SO2: 1h, 24h window
Surface compatibility by pollutant
| Pollutant | Surface compatibility |
|---|---|
| PM2.5 | DIRECT_SURFACE |
| PM10 | DIRECT_SURFACE |
| O3 | DERIVABLE_SURFACE |
| NO2 | DERIVABLE_SURFACE |
| SO2 | DERIVABLE_SURFACE |
| CO | DERIVABLE_SURFACE |
Source and license
Contains modified Copernicus Atmosphere Monitoring Service information 2026; city extraction and concentration conversion. CAMS global atmospheric composition forecasts (ECMWF/CAMS). CC BY 4.0.
Provider times stay separate from page generation: collecting data or regenerating this page never resets the source time. Data sources and methodology
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