SmogRank / Countries / United States / District of Columbia
Most polluted cities in District of Columbia, United States
1 measured city, this year; 1 above the WHO annual guideline. Worst: Washington at 8.7 µg/m³, #1,106 in the world.
- 1Washington 8.71.7×
Estimated: cities without a monitor
District of Columbia 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 |
|---|---|
| Downtown DC | ≈ 4 µg/m³ |
| Columbia Heights | ≈ 4 µg/m³ |
| Mount Pleasant | ≈ 4 µg/m³ |
| Central 14th Street / Spring Road | ≈ 4 µg/m³ |
| Northwest One | ≈ 4 µg/m³ |
| Foggy Bottom | ≈ 4 µg/m³ |
| Mount Vernon Triangle | ≈ 4 µg/m³ |
| H Street NE | ≈ 4 µg/m³ |
| Pleasant Plains | ≈ 4 µg/m³ |
| NoMa | ≈ 4 µg/m³ |
| Petworth | ≈ 4 µg/m³ |
| Capitol Riverfront | ≈ 4 µg/m³ |
| Park View | ≈ 4 µg/m³ |
| Golden Triangle | ≈ 4 µg/m³ |
| Shaw | ≈ 4 µg/m³ |
| Brightwood | ≈ 4 µg/m³ |
| Adams Morgan | ≈ 4 µg/m³ |
| Kennedy Street | ≈ 4 µg/m³ |
| Southwest Waterfront | ≈ 4 µg/m³ |
Updated 2026-10-01 19:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.