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Air Quality History for Downey, United States

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

37
Current AQI
Good Station

Air Quality Index Station

448h

PM2.5 Station

448h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-06-09 24 21–25 5.7 µg/m³ 6.7 3h 1
2026-06-08 40 29–55 9.6 µg/m³ 10.5 24h 1
2026-06-07 38 21–53 9.0 µg/m³ 10.1 24h 1
2026-06-06 56 41–68 14.7 µg/m³ 16.5 24h 1
2026-06-05 81 57–99 26.2 µg/m³ 28.9 24h 1
2026-06-04 64 38–80 18.4 µg/m³ 20.0 24h 1
2026-06-03 56 21–76 16.1 µg/m³ 17.5 24h 1
2026-06-02 58 38–72 15.8 µg/m³ 17.5 24h 1
2026-06-01 46 29–76 11.7 µg/m³ 13.4 21h 1
2026-05-31 38 17–57 9.1 µg/m³ 9.7 24h 1
2026-05-30 10 4–38 2.4 µg/m³ 2.9 20h 1
2026-05-29 5 4–8 1.2 µg/m³ 1.4 12h 1
2026-05-28 6 4–17 1.4 µg/m³ 1.6 16h 1
2026-05-27 8 4–17 2.0 µg/m³ 2.7 22h 1
2026-05-26 17 8–25 4.1 µg/m³ 4.8 24h 1
2026-05-25 23 12–42 5.5 µg/m³ 6.1 24h 1
2026-05-24 52 33–70 13.7 µg/m³ 14.6 24h 1
2026-05-23 56 33–80 14.8 µg/m³ 16.5 24h 1
2026-05-22 53 25–74 14.7 µg/m³ 16.0 22h 1
2026-05-21 51 25–76 13.3 µg/m³ 14.9 24h 1
2026-05-20 70 25–119 21.6 µg/m³ 23.4 20h 1
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