What is the air quality in Waterloo today?

The current Air Quality Index (AQI) in Waterloo is 23 (Good). PM2.5 concentration is 5.45 µg/m³.

What is the temperature in Waterloo right now?

The current temperature in Waterloo is 11.1°C (feels like 11.1°C). Humidity is 79.8% and wind speed is 53.5 km/h.

Is it safe to go outside in Waterloo?

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

Air Quality in Waterloo, Belgium

Windy

11.1°C · 79.8% humidity

11.1°

Feels 11.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

13 3am

23 6am

18 9am

15 12pm

14 3pm

14 6pm

14 9pm

14 12am

Station readings 8h ago

AQI 5

PM2.5 1.1 µg/m³ · 8h ago

CAMS model adj -11

Air Quality Index Trend

20h · 1 stn

View full history →

Waterloo's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

79.8%

Humidity

53.5 km/h

Wind SW

1021.9 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.45 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Waterloo?

Temperature & Precipitation

PM2.5 Trend

20h · 1 station

PM2.55.45 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (6 stations within 25 km)

5.45

Median

5.6

Average

3.6

Low

7.9

High

PM2.5 µg/m³ · Model: 5.9 · Bias: +0.4

What is the 7-day forecast for Waterloo?

06-09

17.8° 8.2°

1.13 mm

06-10

22.9° 11.7°

0.56 mm

06-11

25.0° 15.3°

2.44 mm

06-12

20.2° 10.6°

0.69 mm

06-13

23.9° 6.8°

0.06 mm

06-14

22.5° 11.1°

0.31 mm

06-15

16.6° 11.0°

3.69 mm

Both models agree Avg diff: 3.8°C

Where are air quality stations near Waterloo?

rixensart

6.7 km PM2.5: 4.1 µg/m³ PM10: 8.0 µg/m³

Ukkel, Belgium

9.5 km PM2.5: 9.1 µg/m³

brussel (regentlaan)

14.5 km PM2.5: 3.9 µg/m³ PM10: 11.0 µg/m³

–

belgium-woluwe-saint-lambert-sint-lambrechts-woluwe-avenue-marie-josé-marie-josélaan

14.6 km 28.0°C 44.0% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

Brussels

15.4 km PM2.5: 7.7 µg/m³

Voorhaven (haren), Belgium

18.8 km PM2.5: 7.2 µg/m³

Neder-over-heembeek, Belgium

20.1 km PM2.5: 3.1 µg/m³

Neder-over-heembeek, Belgium

20.1 km PM2.5: 7.2 µg/m³

Steenokkerzeel, Belgium

23.4 km PM2.5: 2.9 µg/m³

–

Mellet

23.8 km PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³

What cities are near Waterloo?

23 Braine-l'Alleud 23 Sint-Genesius-Rode 23 Rixensart 23 Beersel 22 Watermael-Boitsfort 23 Uccle 21 Auderghem 22 Overijse 23 Halle 21 Forest

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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 2026-06-09T04:23 UTC.