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Air Quality History for O'Fallon, United States

Historical PM2.5 and AQI trend from monitoring stations near O'Fallon, United States.

30
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

446h

PM2.5 Station

446h · 4 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-08-08 42 29–69 11.1 µg/m³ 4h 5
2026-08-07 33 18–60 8.0 µg/m³ 20h 4
2026-08-06 35 5–53 8.3 µg/m³ 18h 4
2026-08-05 41 22–59 9.9 µg/m³ 22h 4
2026-08-04 38 23–60 9.3 µg/m³ 24h 4
2026-08-03 36 18–53 8.7 µg/m³ 22h 4
2026-08-02 42 25–152 11.3 µg/m³ 24h 4
2026-08-01 37 27–51 8.8 µg/m³ 23h 4
2026-07-31 33 19–52 8.0 µg/m³ 23h 3
2026-07-30 33 19–53 7.9 µg/m³ 20h 3
2026-07-29 40 16–75 10.0 µg/m³ 24h 4
2026-07-28 47 27–58 11.5 µg/m³ 24h 4
2026-07-27 45 31–58 11.0 µg/m³ 20h 5
2026-07-26 46 9–131 11.9 µg/m³ 24h 4
2026-07-25 35 21–67 8.7 µg/m³ 23h 4
2026-07-24 36 22–48 8.7 µg/m³ 24h 5
2026-07-23 33 22–47 7.9 µg/m³ 24h 4
2026-07-22 41 12–63 10.2 µg/m³ 24h 5
2026-07-21 48 30–80 12.2 µg/m³ 20h 4
2026-07-20 68 28–106 20.4 µg/m³ 22h 3
2026-07-19 57 32–88 16.1 µg/m³ 17h 3
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