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Air Quality History for Mont-Saint-Hilaire, Canada

Historical PM2.5 and AQI trend from monitoring stations near Mont-Saint-Hilaire, Canada.

34
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

476h

PM2.5 Station

476h · 22 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-10-21 48 48–48 11.5 µg/m³ 12.9 1h 22
2026-10-20 30 15–73 7.4 µg/m³ 3.1 24h 17
2026-10-19 32 14–60 7.9 µg/m³ 2.0 24h 18
2026-10-18 19 7–38 4.6 µg/m³ 1.4 24h 14
2026-10-17 28 12–45 6.6 µg/m³ 2.5 24h 14
2026-10-16 35 18–125 9.5 µg/m³ 5.4 24h 17
2026-10-15 29 16–60 7.1 µg/m³ 6.1 24h 20
2026-10-14 40 17–92 10.2 µg/m³ 2.7 24h 22
2026-10-13 29 14–65 7.2 µg/m³ 2.9 24h 18
2026-10-12 24 14–46 5.7 µg/m³ 4.5 24h 19
2026-10-11 30 16–54 7.3 µg/m³ 3.9 24h 23
2026-10-10 25 13–54 5.9 µg/m³ 3.5 24h 17
2026-10-09 25 15–40 5.9 µg/m³ 3.5 24h 15
2026-10-08 28 8–53 6.7 µg/m³ 4.9 24h 5
2026-10-07 13 5–32 3.1 µg/m³ 3.2 24h 4
2026-10-06 14 3–29 3.3 µg/m³ 1.0 23h 3
2026-10-05 14 7–25 3.4 µg/m³ 2.3 24h 4
2026-10-04 20 8–48 4.8 µg/m³ 5.2 24h 5
2026-10-03 20 4–47 4.7 µg/m³ 4.6 24h 4
2026-10-02 34 10–60 8.4 µg/m³ 8.2 24h 4
2026-10-01 35 25–54 8.5 µg/m³ 8.4 20h 5
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