Air Quality in Janesville, United States
Cloudy
24.9°C · 72.4% humidity
24.9°
Feels 24.9°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Janesville's air quality — share it
AQI Forecast
24
2pm
24
24
33
5pm
30
29
28
8pm
27
27
26
11pm
28
55
66
2am
83
84
84
5am
84
84
54
8am
83
146
146
11am
146
146
Air Quality Index Trend
45h · 1 stnJanesville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
72.4%
Humidity
21.0 km/h
Wind NNW
1014.4 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.02 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Janesville?
Temperature & Precipitation
PM2.5 Trend
45h · 1 stationPM2.58.02 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
What is the 7-day forecast for Janesville?
07-21
25.6° 21.1°
0.19 mm
07-22
24.9° 17.9°
4.13 mm
07-23
21.1° 16.4°
7.75 mm
07-24
27.6° 12.7°
07-25
22.0° 16.4°
0.56 mm
07-26
25.7° 19.9°
4.19 mm
07-27
24.6° 18.8°
1.63 mm
Both models agree
Avg diff: 4.6°C
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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 2026-07-21T22:59 UTC.