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Air Quality History for Saint-Léonard, Canada

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

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

Air Quality Index Station

475h

PM2.5 Station

475h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-09-05 21 7–43 5.0 µg/m³ 1.8 18h 2
2026-09-04 40 15–60 9.9 µg/m³ 3.6 24h 2
2026-09-03 40 20–70 10.0 µg/m³ 3.7 24h 2
2026-09-02 21 10–37 5.1 µg/m³ 2.1 24h 2
2026-09-01 26 6–52 6.2 µg/m³ 3.0 23h 2
2026-08-31 35 20–58 8.6 µg/m³ 3.7 24h 2
2026-08-30 40 17–59 10.0 µg/m³ 4.9 24h 2
2026-08-29 19 9–87 5.0 µg/m³ 1.6 24h 2
2026-08-28 34 1–82 8.9 µg/m³ 4.1 22h 2
2026-08-27 41 24–71 10.4 µg/m³ 4.5 24h 2
2026-08-26 22 7–44 5.3 µg/m³ 1.8 24h 2
2026-08-25 14 3–47 3.4 µg/m³ 1.1 24h 2
2026-08-24 22 4–48 5.3 µg/m³ 2.1 24h 2
2026-08-23 29 3–54 7.0 µg/m³ 3.3 24h 2
2026-08-22 37 19–78 9.2 µg/m³ 4.0 24h 2
2026-08-21 20 13–37 4.9 µg/m³ 2.3 24h 2
2026-08-20 38 8–59 9.4 µg/m³ 3.5 24h 2
2026-08-19 34 24–54 8.3 µg/m³ 2.6 24h 2
2026-08-18 20 10–32 4.7 µg/m³ 1.6 24h 2
2026-08-17 45 20–80 12.2 µg/m³ 4.6 24h 2
2026-08-16 52 36–66 13.9 µg/m³ 4.2 4h 2
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