What is the air quality in Waterloo today?

The current Air Quality Index (AQI) in Waterloo is 30 (Good). PM2.5 concentration is 7.18 µg/m³.

What is the temperature in Waterloo right now?

The current temperature in Waterloo is 11.4°C (feels like 11.4°C). Humidity is 68.8% and wind speed is 56.3 km/h.

Is it safe to go outside in Waterloo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 4.4 (Moderate).

Air Quality in Waterloo, Canada

Windy

11.4°C · 68.8% humidity

11.4°

Feels 11.4°

Good

Air quality is satisfactory. Enjoy outdoor activities.

7 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

5 2pm

30 5pm

14 8pm

9 11pm

7 2am

5 5am

5 8am

5 11am

Station readings

CAMS model adj -19

Air Quality Index Trend

42h · 1 stn

View full history →

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.

68.8%

Humidity

56.3 km/h

Wind NNW

1021.4 hPa

Pressure

4.4

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.18 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

42h · 1 station

PM2.57.18 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX4.4

Moderate

Station readings (7 stations within 25 km)

7.18

Median

6.64

Average

1.1

Low

8.2

High

PM2.5 µg/m³ · Model: 5.8 · Bias: -1.4

What is the 7-day forecast for Waterloo?

05-30

17.1° 7.2°

05-31

25.0° 6.4°

06-01

27.4° 13.5°

0.06 mm

06-02

19.2° 8.7°

0.25 mm

06-03

23.4° 19.5°

0.25 mm

06-04

21.1° 10.4°

0.13 mm

06-05

22.1° 6.6°

0.44 mm

Both models agree Avg diff: 5.6°C

Where are air quality stations near Waterloo?

Kitchener, Ontario, Canada

2.7 km PM2.5: 7.4 µg/m³

Kitchener, Ontario, Canada

2.7 km PM2.5: 4.3 µg/m³

Kitchener, Ontario, Canada

2.7 km PM2.5: 5.0 µg/m³

Bushview Crescent Waterloo

5.4 km PM2.5: 1.3 µg/m³ PM10: 1.3 µg/m³

Guelph, Ontario, Canada

22.4 km PM2.5: 3.6 µg/m³

Guelph, Ontario, Canada

22.4 km PM2.5: 5.5 µg/m³

What cities are near Waterloo?

32 Kitchener 31 Forest Heights 31 Vanier 30 Hespeler 32 Fiddlesticks 32 Cambridge 32 Christopher-Champlain 31 Guelph 31 Fergus 36 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 2026-05-30T21:31 UTC.