Air Quality in Waterloo, Canada

Windy
13.5°C · 91.9% humidity
13.5°
Feels 13.5°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
60 4pm
60
76
67 7pm
66
104
66 10pm
66
66
66 1am
79
79
79 4am
66
66
66 7am
66
66
79 10am
79
66
66 1pm
66
54
Station readings
60
60
76
67
CAMS model adj +29
25
37
37
37
37
75
37
37
37
37
50
50
50
37
37
37
37
37
50
50
37
37
37
25
AD 728×90

PM2.5 Trend (24h)

24h · 1 station
91.9%
Humidity
129.4 km/h
Wind SSW
1021.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.520.11 µg/m³ ×1.3 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
20.11
Median
20.11
Average
20.11
Low
20.11
High
PM2.5 µg/m³ · Model: 7.4 · Bias: -12.7

What is the 7-day forecast for Waterloo?

04-09
13.5° 2.1°
04-10
12.1° 7.3°
04-11
11.0° 3.9°
9.44 mm
04-12
9.2° 4.9°
0.25 mm
04-13
18.9° 8.2°
10.25 mm
04-14
21.5° 15.5°
4.38 mm
04-15
16.3° 5.4°
19.88 mm
Both models agree Avg diff: 6.2°C

Where are air quality stations near Waterloo?

38
Kitchener, Ontario, Canada
2.7 km
30
Kitchener, Ontario, Canada
2.7 km
42
Kitchener, Ontario, Canada
2.7 km
67
Bushview Crescent Waterloo
5.4 km PM2.5: 19.9 µg/m³ PM10: 20.1 µg/m³
38
Guelph, Ontario, Canada
22.4 km
32
Guelph, Ontario, Canada
22.4 km
42
Guelph, Ontario, Canada
22.4 km

What cities are near Waterloo?

68 Kitchener 68 Forest Heights 68 Vanier 68 Hespeler 58 Fiddlesticks 53 Cambridge 49 Christopher-Champlain 32 Guelph 18 Fergus 28 Stratford

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T19:33 UTC.