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Air Quality History for Ontario, United States

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

60
Current AQI
Moderate CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

477h

PM2.5 Station

477h · 24 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-08-08 44 38–50 10.5 µg/m³ 4.3 2h 23
2026-08-07 48 39–63 11.8 µg/m³ 7.1 24h 22
2026-08-06 51 38–68 12.9 µg/m³ 9.0 24h 22
2026-08-05 55 40–75 14.8 µg/m³ 9.9 24h 22
2026-08-04 56 39–101 15.5 µg/m³ 10.0 24h 23
2026-08-03 50 37–59 12.4 µg/m³ 9.6 24h 21
2026-08-02 46 34–54 11.0 µg/m³ 7.7 24h 21
2026-08-01 51 45–57 12.5 µg/m³ 8.9 24h 22
2026-07-31 51 39–60 12.9 µg/m³ 10.8 24h 22
2026-07-30 49 38–59 12.2 µg/m³ 9.7 24h 21
2026-07-29 47 40–56 11.5 µg/m³ 8.8 24h 22
2026-07-28 51 34–152 13.6 µg/m³ 6.5 24h 22
2026-07-27 42 30–54 10.2 µg/m³ 6.6 24h 23
2026-07-26 45 39–48 10.7 µg/m³ 7.9 24h 24
2026-07-25 42 34–54 10.1 µg/m³ 6.6 24h 24
2026-07-24 36 25–55 8.8 µg/m³ 4.8 24h 24
2026-07-23 29 21–45 7.0 µg/m³ 2.6 24h 23
2026-07-22 34 23–57 8.1 µg/m³ 4.6 24h 23
2026-07-21 37 30–56 8.9 µg/m³ 4.0 24h 23
2026-07-20 47 38–56 11.3 µg/m³ 7.1 24h 22
2026-07-19 47 40–52 11.3 µg/m³ 8.4 19h 24
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