What is the air quality in Guelph today?

The current Air Quality Index (AQI) in Guelph is 32 (Good). PM2.5 concentration is 7.8 µg/m³.

What is the temperature in Guelph right now?

The current temperature in Guelph is 11.8°C (feels like 11.8°C). Humidity is 84.9% and wind speed is 18.2 km/h.

Is it safe to go outside in Guelph?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Guelph, Canada

Cloudy

11.8°C · 84.9% humidity

11.8°

Feels 11.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

25 2am

32 5am

27 8am

25 11am

24 2pm

24 5pm

24 8pm

25 11pm

Air Quality Index Trend

48h · 11 stn

View full history →

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.

84.9%

Humidity

18.2 km/h

Wind NE

1015.4 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Guelph?

Temperature & Precipitation

PM2.5 Trend

48h · 11 stations

PM2.57.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (4 stations within 25 km)

7.8

Median

7.8

Average

7.4

Low

8.2

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -1.9

What is the 7-day forecast for Guelph?

05-30

18.3° 7.5°

0.06 mm

05-31

25.6° 6.5°

06-01

28.0° 12.7°

06-02

19.8° 8.4°

0.06 mm

06-03

24.6° 19.0°

0.06 mm

06-04

22.4° 10.9°

0.19 mm

06-05

22.0° 8.0°

0.06 mm

Both models agree Avg diff: 5.4°C

Where are air quality stations near Guelph?

Guelph, Ontario, Canada

0.9 km PM2.5: 6.0 µg/m³

Guelph, Ontario, Canada

0.9 km PM2.5: 25.4 µg/m³

Kitchener, Ontario, Canada

23.0 km PM2.5: 3.1 µg/m³

Kitchener, Ontario, Canada

23.0 km PM2.5: 21.6 µg/m³

Kitchener, Ontario, Canada

23.0 km PM2.5: 5.0 µg/m³

What cities are near Guelph?

30 Hespeler 32 Fiddlesticks 32 Fergus 31 Vanier 33 Cambridge 33 Christopher-Champlain 30 Waterloo 32 Kitchener 31 Forest Heights 25 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 2026-05-30T09:12 UTC.