Air Quality in Waterloo, Canada
Drizzle
6.3°C · 96.2% humidity
6.3°
Feels -1.3°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
7 stations
Nearby Monitoring Stations
Waterloo's air quality — share it
AQI Forecast
Calibrated
21
5pm
21
21
40
8pm
35
33
37
11pm
35
34
33
2am
32
31
31
5am
31
30
30
8am
50
30
23
11am
23
23
23
2pm
23
23
Station readings
24
25
27
11
CAMS model
adj -4
25
25
25
25
25
27
34
34
34
34
34
34
34
34
34
34
54
34
27
27
27
27
27
27
Air Quality Index Trend
48h · 1 stnWaterloo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
96.2%
Humidity
95.1 km/h
Wind NW
1002.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.74 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Waterloo?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.59.74 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (7 stations within 25 km)
9.74
Median
9.76
Average
5.02
Low
15.4
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -2.6
What is the 7-day forecast for Waterloo?
06-09
28.8° 6.3°
0.19 mm
06-10
14.6° 11.6°
0.31 mm
06-11
22.6° 8.4°
06-12
23.7° 14.2°
7.31 mm
06-13
23.2° 17.7°
1.88 mm
06-14
24.5° 13.4°
06-15
28.3° 17.7°
0.06 mm
Both models agree
Avg diff: 7.5°C
Where are air quality stations near Waterloo?
94
Kitchener, Ontario, Canada
9
Kitchener, Ontario, Canada
66
Kitchener, Ontario, Canada
11
Bushview Crescent Waterloo
18
Guelph, Ontario, Canada
41
Guelph, Ontario, Canada
What cities are near Waterloo?
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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 2026-06-09T00:40 UTC.