Air Quality in Waterloo, Canada

Windy
21.2°C · 37.0% humidity
21.2°
Feels 21.2°
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
29 11pm
29
29
34 2am
33
32
31 5am
10
1
1 8am
0
0
0 11am
0
0
0 2pm
0
0
0 5pm
0
0
0 8pm
0
0
Station readings
59
9
14
30
CAMS model adj -25
54
54
54
54
54
54
54
34
25
24
25
25
24
24
25
25
25
25
25
24
25
25
24
24
AD 728×90

Air Quality Index Trend

48h · 1 stn

Waterloo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

37.0%
Humidity
54.1 km/h
Wind NW
1014.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
34
8.25 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.58.25 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (5 stations within 25 km)
8.25
Median
8.36
Average
8.2
Low
8.6
High
PM2.5 µg/m³ · Model: 6.5 · Bias: -1.8

What is the 7-day forecast for Waterloo?

08-03
22.3° 18.5°
6.56 mm
08-04
25.7° 14.1°
0.25 mm
08-05
32.0° 13.3°
08-06
27.6° 16.7°
12.56 mm
08-07
28.6° 11.8°
1.87 mm
08-08
34.2° 16.3°
08-09
35.1° 18.5°
0.56 mm
Both models agree Avg diff: 4.0°C

Where are air quality stations near Waterloo?

43
Kitchener, Ontario, Canada
2.7 km PM2.5: 10.3 µg/m³
30
Kitchener, Ontario, Canada
2.7 km PM2.5: 7.2 µg/m³
30
Kitchener, Ontario, Canada
2.7 km PM2.5: 7.2 µg/m³
38
Kitchener, Ontario, Canada
2.7 km PM2.5: 9.1 µg/m³
30
Kitchener, Ontario, Canada
2.7 km PM2.5: 7.2 µg/m³
14
Bushview Crescent Waterloo
5.4 km PM2.5: 3.3 µg/m³ PM10: 3.3 µg/m³
40
Guelph, Ontario, Canada
22.4 km PM2.5: 9.6 µg/m³
34
Guelph, Ontario, Canada
22.4 km PM2.5: 8.2 µg/m³
34
Guelph, Ontario, Canada
22.4 km PM2.5: 8.2 µg/m³

What cities are near Waterloo?

34 Kitchener 34 Forest Heights 34 Vanier 35 Hespeler 35 Fiddlesticks 37 Cambridge 38 Christopher-Champlain 35 Guelph 35 Fergus 33 Stratford
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T06:31 UTC.