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Air Quality History for Alliston, Canada

Historical PM2.5 and AQI trend from monitoring stations near Alliston, Canada.

24
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-09-05 27 18–58 6.6 µg/m³ 17h 6
2026-09-04 42 20–73 10.8 µg/m³ 24h 8
2026-09-03 53 23–180 18.3 µg/m³ 24h 8
2026-09-02 44 23–92 11.3 µg/m³ 24h 8
2026-09-01 50 31–96 13.4 µg/m³ 24h 8
2026-08-31 42 24–152 11.5 µg/m³ 24h 8
2026-08-30 47 26–135 12.2 µg/m³ 24h 7
2026-08-29 47 18–93 12.2 µg/m³ 24h 8
2026-08-28 38 18–58 9.4 µg/m³ 24h 8
2026-08-27 50 29–98 13.4 µg/m³ 24h 7
2026-08-26 51 20–104 13.8 µg/m³ 24h 8
2026-08-25 38 17–146 10.0 µg/m³ 24h 7
2026-08-24 32 12–62 7.7 µg/m³ 24h 6
2026-08-23 48 17–90 13.0 µg/m³ 24h 7
2026-08-22 57 36–88 15.8 µg/m³ 4h 8
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