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Air Quality History for Downtown DC, United States

Historical PM2.5 and AQI trend from monitoring stations near Downtown DC, United States.

15
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

479h

PM2.5 Station

479h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-06-09 27 19–35 6.4 µg/m³ 3h 7
2026-06-08 27 17–40 6.5 µg/m³ 24h 8
2026-06-07 32 23–44 7.8 µg/m³ 24h 7
2026-06-06 40 33–46 9.6 µg/m³ 24h 8
2026-06-05 44 30–53 10.7 µg/m³ 24h 8
2026-06-04 38 28–56 9.2 µg/m³ 24h 8
2026-06-03 30 17–46 7.3 µg/m³ 24h 8
2026-06-02 27 18–35 6.5 µg/m³ 24h 8
2026-06-01 29 17–38 6.9 µg/m³ 24h 8
2026-05-31 28 17–45 6.7 µg/m³ 24h 8
2026-05-30 30 20–39 7.3 µg/m³ 24h 9
2026-05-29 27 15–40 6.5 µg/m³ 24h 8
2026-05-28 27 18–44 6.5 µg/m³ 24h 8
2026-05-27 32 23–47 7.7 µg/m³ 24h 10
2026-05-26 33 25–45 7.8 µg/m³ 24h 8
2026-05-25 32 20–42 7.6 µg/m³ 24h 8
2026-05-24 26 18–38 6.3 µg/m³ 24h 8
2026-05-23 22 16–32 5.3 µg/m³ 24h 8
2026-05-22 23 15–33 5.4 µg/m³ 24h 8
2026-05-21 24 15–36 5.8 µg/m³ 24h 8
2026-05-20 32 22–45 7.6 µg/m³ 20h 9
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