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Air Quality History for Saint-Léonard, Canada

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

5
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

407h

PM2.5 Station

407h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-05-30 9 4–15 2.1 µg/m³ 1.4 6h 1
2026-05-29 21 2–60 5.3 µg/m³ 4.4 24h 2
2026-05-28 13 2–70 3.1 µg/m³ 4.7 20h 1
2026-05-27 13 3–44 2.9 µg/m³ 1.1 19h 2
2026-05-26 28 5–45 6.7 µg/m³ 3.0 24h 2
2026-05-25 15 2–31 3.4 µg/m³ 1.6 15h 2
2026-05-24 18 3–70 4.6 µg/m³ 3.1 24h 2
2026-05-23 24 2–80 6.1 µg/m³ 4.2 24h 2
2026-05-22 9 1–43 2.1 µg/m³ 1.6 22h 2
2026-05-21 11 1–42 2.6 µg/m³ 2.3 13h 1
2026-05-20 27 2–48 6.5 µg/m³ 2.9 18h 2
2026-05-19 54 10–152 15.7 µg/m³ 5.8 24h 2
2026-05-18 15 1–41 3.7 µg/m³ 3.0 19h 2
2026-05-17 36 1–82 9.4 µg/m³ 5.2 21h 2
2026-05-16 20 3–66 5.0 µg/m³ 2.1 24h 2
2026-05-15 42 6–97 12.3 µg/m³ 4.1 24h 2
2026-05-14 48 22–85 13.0 µg/m³ 4.5 24h 2
2026-05-13 13 4–32 3.2 µg/m³ 2.0 24h 2
2026-05-12 5 2–13 1.1 µg/m³ 1.5 8h 1
2026-05-11 10 1–64 2.5 µg/m³ 6.6 16h 1
2026-05-10 21 1–122 6.2 µg/m³ 6.9 14h 2
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