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Air Quality History for Williamstown, United States

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

19
Current AQI
Good CAMS model
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-06-09 19 11–24 4.5 µg/m³ 1.8 11h 72
2026-06-08 28 16–56 6.7 µg/m³ 8.8 24h 87
2026-06-07 35 29–41 8.3 µg/m³ 9.9 24h 88
2026-06-06 55 42–61 14.3 µg/m³ 20.0 24h 85
2026-06-05 44 38–50 10.6 µg/m³ 12.7 24h 88
2026-06-04 30 25–36 7.3 µg/m³ 6.1 24h 88
2026-06-03 27 23–32 6.5 µg/m³ 4.1 24h 87
2026-06-02 25 24–25 5.9 µg/m³ 6.1 24h 88
2026-06-01 26 21–29 6.3 µg/m³ 6.4 24h 77
2026-05-31 21 16–29 5.0 µg/m³ 2.9 24h 88
2026-05-30 20 15–28 4.8 µg/m³ 3.7 24h 87
2026-05-29 19 15–23 4.5 µg/m³ 1.8 24h 88
2026-05-28 30 19–39 7.1 µg/m³ 4.3 24h 80
2026-05-27 44 28–61 10.7 µg/m³ 16.2 24h 88
2026-05-26 26 18–28 6.2 µg/m³ 5.4 13h 80
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