Home › Canada › St. Thomas › History

Air Quality History for St. Thomas, Canada

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

26
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

176h

PM2.5 Station

176h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-07-21 34 30–36 8.2 µg/m³ 3h 2
2026-07-20 85 60–110 28.2 µg/m³ 6h 2
2026-07-19 111 85–174 48.0 µg/m³ 4h 2
2026-07-18 84 35–179 38.5 µg/m³ 4h 2
2026-07-17 431 411–451 413.7 µg/m³ 2h 2
2026-07-14 55 53–57 14.1 µg/m³ 3h 2
2026-07-13 59 14–72 17.1 µg/m³ 7h 2
2026-07-12 56 38–67 15.0 µg/m³ 7h 2
2026-07-11 38 22–55 9.2 µg/m³ 14h 2
2026-07-10 33 25–51 7.9 µg/m³ 15h 2
2026-07-09 48 26–64 12.0 µg/m³ 12h 2
2026-07-08 29 18–39 7.0 µg/m³ 11h 2
2026-07-07 37 29–49 8.9 µg/m³ 6h 2
2026-07-06 37 30–43 8.9 µg/m³ 6h 2
2026-07-05 34 24–42 8.3 µg/m³ 20h 2
2026-07-04 36 25–60 8.8 µg/m³ 24h 2
2026-07-03 49 23–67 12.1 µg/m³ 24h 2
2026-07-02 64 57–71 18.5 µg/m³ 8h 2
Back to St. Thomas Air Quality