Air Quality in Guelph, Canada

Windy
22.0°C · 35.8% humidity
22.0°
Feels 22.0°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
34 4pm
36
39
35 7pm
37
58
59 10pm
60
61
61 1am
61
62
62 4am
62
42
33 7am
32
33
33 10am
32
32
33 1pm
33
33
Station readings
34
36
39
38
CAMS model adj +8
27
27
27
34
34
54
54
54
54
54
54
54
54
54
34
25
24
25
25
24
24
25
25
25
AD 728×90

Air Quality Index Trend

28h · 2 stn

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

35.8%
Humidity
50.8 km/h
Wind NNW
1014.4 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
35
8.4 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Guelph?

Temperature & Precipitation

PM2.5 Trend

28h · 2 stations
PM2.58.4 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (4 stations within 25 km)
8.4
Median
8.3
Average
8.2
Low
8.6
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -1.0

What is the 7-day forecast for Guelph?

08-03
23.0° 18.1°
1.5 mm
08-04
26.9° 14.2°
0.13 mm
08-05
33.7° 13.5°
08-06
27.8° 17.7°
7.19 mm
08-07
29.7° 11.8°
1.31 mm
08-08
34.2° 16.9°
08-09
35.9° 18.0°
0.25 mm
Both models agree Avg diff: 3.7°C

Where are air quality stations near Guelph?

40
Guelph, Ontario, Canada
0.9 km PM2.5: 9.6 µg/m³
42
Guelph, Ontario, Canada
0.9 km PM2.5: 10.1 µg/m³
50
Guelph, Ontario, Canada
0.9 km PM2.5: 12.0 µg/m³
34
Guelph, Ontario, Canada
0.9 km PM2.5: 8.2 µg/m³
38
Guelph, Ontario, Canada
0.9 km PM2.5: 9.1 µg/m³
37
Kitchener, Ontario, Canada
23.0 km PM2.5: 8.9 µg/m³
43
Kitchener, Ontario, Canada
23.0 km PM2.5: 10.3 µg/m³
50
Kitchener, Ontario, Canada
23.0 km PM2.5: 12.0 µg/m³
55
Kitchener, Ontario, Canada
23.0 km PM2.5: 14.0 µg/m³
30
Kitchener, Ontario, Canada
23.0 km PM2.5: 7.2 µg/m³

What cities are near Guelph?

35 Hespeler 35 Fiddlesticks 35 Fergus 34 Vanier 37 Cambridge 38 Christopher-Champlain 34 Waterloo 34 Kitchener 34 Forest Heights 45 Halton Hills
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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 2026-08-07T23:45 UTC.