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Air Quality History for Waterloo, Canada

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

49
Current AQI
Good Station
48 Hours 7 Days 14 Days 20 Days
CSV JSON

Air Quality Index Station

451h

PM2.5 Station

451h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date AQI Range PM2.5 avg PM10 avg Hours Stations
2026-07-21 72 11–129 23.0 µg/m³ 27.2 22h 1
2026-07-20 48 5–126 14.3 µg/m³ 16.3 24h 1
2026-07-19 57 8–139 17.3 µg/m³ 18.9 24h 1
2026-07-18 138 60–192 67.8 µg/m³ 75.0 24h 1
2026-07-17 195 97–305 127.1 µg/m³ 142.3 24h 1
2026-07-16 199 99–309 131.4 µg/m³ 145.7 24h 1
2026-07-15 132 9–313 86.0 µg/m³ 93.3 24h 1
2026-07-14 54 11–93 15.6 µg/m³ 16.4 24h 1
2026-07-13 70 24–96 21.7 µg/m³ 23.1 24h 1
2026-07-12 58 12–95 17.5 µg/m³ 18.3 24h 1
2026-07-11 43 6–75 11.7 µg/m³ 12.1 24h 1
2026-07-10 14 4–38 3.3 µg/m³ 3.5 24h 1
2026-07-09 42 4–84 11.7 µg/m³ 11.7 24h 1
2026-07-08 21 4–65 5.2 µg/m³ 4.5 23h 1
2026-07-07 27 4–57 6.5 µg/m³ 5.3 20h 2
2026-07-06 42 9–66 10.9 µg/m³ 9.6 12h 1
2026-07-05 53 6–94 14.9 µg/m³ 15.8 24h 1
2026-07-04 39 4–89 9.8 µg/m³ 10.2 24h 1
2026-07-03 35 6–65 8.6 µg/m³ 8.9 24h 1
2026-07-02 40 16–59 9.9 µg/m³ 10.5 12h 1
2026-07-01 22 19–24 5.1 µg/m³ 5.1 2h 1
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