SmogRank / Countries / Sri Lanka / Western Province
Most polluted cities in Western Province, Sri Lanka
0 measured cities, last 30 days.
No city has enough measurements for this window yet.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
Estimated: cities without a monitor
Western Province cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Colombo | ≈ 12 µg/m³ |
| Dehiwala-Mount Lavinia | ≈ 12 µg/m³ |
| Maharagama | ≈ 12 µg/m³ |
| Moratuwa | ≈ 12 µg/m³ |
| Negombo | ≈ 12 µg/m³ |
| Pita Kotte | ≈ 12 µg/m³ |
| Sri Jayewardenepura Kotte | ≈ 12 µg/m³ |
| Katunayaka | ≈ 12 µg/m³ |
| Battaramulla South | ≈ 12 µg/m³ |
| Kolonnawa | ≈ 12 µg/m³ |
| Kotikawatta | ≈ 12 µg/m³ |
| Hendala | ≈ 12 µg/m³ |
| Welisara | ≈ 12 µg/m³ |
| Kalutara | ≈ 11 µg/m³ |
| Homagama | ≈ 12 µg/m³ |
| Beruwala | ≈ 11 µg/m³ |
| Panadura | ≈ 12 µg/m³ |
| Mulleriyawa | ≈ 12 µg/m³ |
| Kandana | ≈ 12 µg/m³ |
| Ja Ela | ≈ 12 µg/m³ |
| Wattala | ≈ 12 µg/m³ |
| Kelaniya | ≈ 12 µg/m³ |
| Peliyagoda | ≈ 12 µg/m³ |
| Hanwella Ihala | ≈ 12 µg/m³ |
Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.