Air Quality in Waterloo, United States
Partly Cloudy
18.2°C · 51.2% humidity
18.2°
Feels 18.2°
44
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Waterloo's air quality — share it
AQI Forecast
25
8am
25
25
44
11am
39
35
32
2pm
30
29
28
5pm
27
26
28
8pm
28
27
27
11pm
27
25
25
2am
25
25
25
5am
25
25
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.
51.2%
Humidity
39.6 km/h
Wind NNW
1021.7 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
10.65 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Waterloo?
Temperature & Precipitation
PM2.510.65 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX12.9
Extreme
What is the 7-day forecast for Waterloo?
09-05
24.4° 17.9°
0.38 mm
09-06
27.1° 10.4°
0.62 mm
09-07
23.7° 16.9°
2.25 mm
09-08
21.7° 13.5°
21.44 mm
09-09
32.2° 16.1°
09-10
27.0° 16.5°
0.88 mm
09-11
24.6° 14.1°
0.06 mm
Both models agree
Avg diff: 6.3°C
What cities are near Waterloo?
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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 2026-09-05T16:39 UTC.