Stay updated with real-time air quality in Janesville, Wisconsin featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
36
Good
Janesville, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.18 μg/m³
0
55
155
255
425
605+
39.44 ppb
0
55
71
86
201
201+
0.74 ppb
0
36
76
186
605
1005+
3.67 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Janesville, Wisconsin
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AQI 37
Good
5.86μg/m³
PM2.5
19.77μg/m³
PM10
39.69ppb
O3
0.77ppb
SO2
4.19ppb
NO2
0.19ppm
CO
AQI 33
Good
3.98μg/m³
PM2.5
17.26μg/m³
PM10
35.69ppb
O3
0.60ppb
SO2
3.19ppb
NO2
0.18ppm
CO
AQI 44
Good
7.77μg/m³
PM2.5
28.66μg/m³
PM10
41.84ppb
O3
0.75ppb
SO2
4.15ppb
NO2
0.19ppm
CO
AQI 33
Good
4.25μg/m³
PM2.5
14.82μg/m³
PM10
36.49ppb
O3
0.63ppb
SO2
4.30ppb
NO2
0.19ppm
CO
AQI 34
Good
3.45μg/m³
PM2.5
15.22μg/m³
PM10
36.65ppb
O3
0.45ppb
SO2
1.38ppb
NO2
0.16ppm
CO
AQI 44
Good
7.52μg/m³
PM2.5
25.78μg/m³
PM10
42.83ppb
O3
0.75ppb
SO2
4.15ppb
NO2
0.19ppm
CO
The air quality data for Wisconsin, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Janesville, Wisconsin are available every hour.
Janesville, Wisconsin experienced its worst air quality at 07:00:00, 2026-03-09.
The best air quality in Janesville, Wisconsin was observed at 02:00:00 on 2026-03-09.
The air quality in Janesville, Wisconsin right now is Good, with an AQI of 36.
In Janesville, Wisconsin, O3 is the most frequently found pollutant.
When air quality in Janesville, Wisconsin is compromised, staying indoors and wearing a mask can reduce health risks.
Janesville, Wisconsin currently has a PM2.5 concentration of 5.573 μg/m3.
Janesville, Wisconsin currently has a PM10 concentration of 24.176 μg/m3.
The current carbon monoxide (CO) level in Janesville, Wisconsin is 0.185 ppm.
The current sulfur dioxide (SO2) concentration in Janesville, Wisconsin is 0.745 ppb.
Janesville, Wisconsin currently has an ozone (O3) concentration of 39.435 ppm.
The current level of nitrogen dioxide (NO2) in Janesville, Wisconsin is 3.666 ppb.
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