Air Quality in Guelph, Canada

Drizzle
8.1°C · 92.1% humidity
8.1°
Feels 1.9°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
36 8pm
36
38
26 11pm
31
35
38 2am
40
41
42 5am
43
44
44 8am
64
45
38 11am
38
38
38 2pm
38
38
36 5pm
36
36
Station readings 29h ago
AQI 38
PM2.5 9.1 µg/m³ · 29h ago
AD 728×90

Air Quality Index Trend

48h · 12 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.

92.1%
Humidity
75.4 km/h
Wind NW
1004.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
26
6.2 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

48h · 12 stations
PM2.56.2 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
6.2
Median
6.78
Average
6.2
Low
8.2
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +1.1
06-09
29.4° 6.7°
0.5 mm
06-10
15.7° 11.2°
1.25 mm
06-11
23.4° 8.3°
06-12
24.6° 14.7°
3.31 mm
06-13
24.0° 18.7°
2.75 mm
06-14
25.1° 13.0°
06-15
28.2° 16.8°
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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 2026-06-09T03:33 UTC.