SmogRank / United States

Air quality in Southwest Waterfront, estimated

District of Columbia, United States. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.

≈4µg/m³
Good, estimated

Estimated PM2.5, 7-day average to 2026-09-30, about 0.3× the WHO 24-hour guideline. 30-day average ≈ 4 µg/m³.

Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 0.37 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.

Last 30 days, estimated

152026-09-01: ≈ 5 µg/m³ (estimate)09-012026-09-02: ≈ 5 µg/m³ (estimate)2026-09-03: ≈ 5 µg/m³ (estimate)2026-09-04: ≈ 5 µg/m³ (estimate)2026-09-05: ≈ 4 µg/m³ (estimate)2026-09-06: ≈ 8 µg/m³ (estimate)2026-09-07: ≈ 5 µg/m³ (estimate)2026-09-08: ≈ 4 µg/m³ (estimate)09-082026-09-09: ≈ 4 µg/m³ (estimate)2026-09-10: ≈ 3 µg/m³ (estimate)2026-09-11: ≈ 5 µg/m³ (estimate)2026-09-12: ≈ 4 µg/m³ (estimate)2026-09-13: ≈ 2 µg/m³ (estimate)2026-09-14: ≈ 4 µg/m³ (estimate)2026-09-15: ≈ 3 µg/m³ (estimate)09-152026-09-16: ≈ 4 µg/m³ (estimate)2026-09-17: ≈ 4 µg/m³ (estimate)2026-09-18: ≈ 3 µg/m³ (estimate)2026-09-19: ≈ 4 µg/m³ (estimate)2026-09-20: ≈ 3 µg/m³ (estimate)2026-09-21: ≈ 4 µg/m³ (estimate)2026-09-22: ≈ 2 µg/m³ (estimate)09-222026-09-23: ≈ 3 µg/m³ (estimate)2026-09-24: ≈ 3 µg/m³ (estimate)2026-09-25: ≈ 2 µg/m³ (estimate)2026-09-26: ≈ 1 µg/m³ (estimate)2026-09-27: ≈ 3 µg/m³ (estimate)2026-09-28: ≈ 2 µg/m³ (estimate)2026-09-29: ≈ 6 µg/m³ (estimate)09-292026-09-30: ≈ 10 µg/m³ (estimate)
Daily means, UTC days. Dashed line: WHO 24-hour guideline (15 µg/m³).

Measured cities nearby

CityDistance7-day average
Washington2 km3.9 µg/m³
Oxon Hill-Glassmanor10 km2.4 µg/m³
Rose Hill13 km3.5 µg/m³
Springfield18 km3.9 µg/m³
Rockville26 km2.0 µg/m³
South Laurel26 km1.9 µg/m³

Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.