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Air Quality History for St. Thomas, Canada

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

30
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

238h

PM2.5 Station

238h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg Hours Stations
2026-05-30 70 19–240 31.5 µg/m³ 13h 2
2026-05-29 39 13–96 10.9 µg/m³ 17h 1
2026-05-28 38 15–138 11.2 µg/m³ 21h 2
2026-05-27 55 13–170 18.4 µg/m³ 20h 2
2026-05-26 51 12–164 15.8 µg/m³ 17h 2
2026-05-25 64 13–427 35.2 µg/m³ 17h 2
2026-05-24 37 7–113 10.3 µg/m³ 19h 2
2026-05-23 55 10–187 22.2 µg/m³ 18h 2
2026-05-22 41 12–136 12.3 µg/m³ 19h 2
2026-05-21 57 2–161 18.4 µg/m³ 18h 2
2026-05-20 52 2–142 16.0 µg/m³ 17h 1
2026-05-19 49 12–154 14.9 µg/m³ 16h 1
2026-05-18 22 3–43 5.3 µg/m³ 16h 1
2026-05-17 46 11–105 13.9 µg/m³ 9h 1
2026-05-16 30 30–30 7.1 µg/m³ 1h 5
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