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Air Quality History for Ancaster, Canada

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

32
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

329h

PM2.5 Station

329h · 5 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-10-21 21 18–24 5.0 µg/m³ 3h 5
2026-10-20 24 18–29 5.6 µg/m³ 24h 5
2026-10-19 27 18–35 6.5 µg/m³ 23h 5
2026-10-18 22 15–32 5.4 µg/m³ 24h 5
2026-10-17 19 13–27 4.6 µg/m³ 24h 5
2026-10-16 20 10–39 4.7 µg/m³ 18h 5
2026-10-15 17 14–22 4.1 µg/m³ 24h 5
2026-10-14 21 11–46 5.1 µg/m³ 24h 5
2026-10-13 39 32–44 9.4 µg/m³ 24h 5
2026-10-12 31 23–39 7.4 µg/m³ 24h 5
2026-10-11 25 17–33 5.9 µg/m³ 24h 5
2026-10-10 22 13–29 5.2 µg/m³ 24h 5
2026-10-09 23 8–30 5.6 µg/m³ 24h 5
2026-10-08 27 16–42 6.4 µg/m³ 24h 5
2026-10-07 28 18–43 6.7 µg/m³ 21h 5
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