Air Quality in Waterloo, United States
Partly Cloudy
25.0°C · 57.4% humidity
25.0°
Feels 25.0°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
AQI Forecast
25
10pm
27
27
30
1am
29
28
27
4am
26
26
26
7am
24
24
24
10am
24
24
24
1pm
24
24
24
4pm
24
24
24
7pm
24
25
Air Quality Index Trend
29h · 2 stnWaterloo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
57.4%
Humidity
20.0 km/h
Wind N
1019.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Waterloo?
Temperature & Precipitation
PM2.5 Trend
29h · 2 stationsPM2.57.1 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
What is the 7-day forecast for Waterloo?
08-03
27.7° 16.4°
08-04
29.8° 14.4°
08-05
27.7° 11.6°
08-06
35.7° 16.7°
1.19 mm
08-07
27.7° 15.6°
0.56 mm
08-08
33.9° 16.2°
2.87 mm
08-09
35.0° 22.5°
0.06 mm
Both models agree
Avg diff: 4.0°C
Where are air quality stations near Waterloo?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T06:30 UTC.