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)
22
Good
Janesville, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.96 μg/m³
0
55
155
255
425
605+
15.44 ppb
0
55
71
86
201
201+
0.70 ppb
0
36
76
186
605
1005+
5.05 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Janesville, Wisconsin
Janesville, Wisconsin
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AQI 33
Good
5.72μg/m³
PM2.5
25.61μg/m³
PM10
19.76ppb
O3
0.69ppb
SO2
3.65ppb
NO2
0.14ppm
CO
AQI 18
Good
3.39μg/m³
PM2.5
15.81μg/m³
PM10
18.63ppb
O3
0.75ppb
SO2
5.47ppb
NO2
0.14ppm
CO
AQI 38
Good
7.37μg/m³
PM2.5
33.95μg/m³
PM10
17.01ppb
O3
0.68ppb
SO2
3.73ppb
NO2
0.14ppm
CO
AQI 22
Good
3.94μg/m³
PM2.5
15.37μg/m³
PM10
20.28ppb
O3
0.71ppb
SO2
5.31ppb
NO2
0.13ppm
CO
AQI 16
Good
3.41μg/m³
PM2.5
14.84μg/m³
PM10
17.09ppb
O3
0.75ppb
SO2
5.35ppb
NO2
0.14ppm
CO
AQI 44
Good
8.12μg/m³
PM2.5
38.18μg/m³
PM10
15.14ppb
O3
0.68ppb
SO2
3.52ppb
NO2
0.14ppm
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 12:00:00, 2025-09-04.
The best air quality in Janesville, Wisconsin was observed at 01:00:00 on 2025-09-04.
The air quality in Janesville, Wisconsin right now is Good, with an AQI of 44.
In Janesville, Wisconsin, PM2.5 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 8.018 μg/m3.
Janesville, Wisconsin currently has a PM10 concentration of 33.205 μg/m3.
The current carbon monoxide (CO) level in Janesville, Wisconsin is 0.257 ppm.
The current sulfur dioxide (SO2) concentration in Janesville, Wisconsin is 0.706 ppb.
Janesville, Wisconsin currently has an ozone (O3) concentration of 30.633 ppm.
The current level of nitrogen dioxide (NO2) in Janesville, Wisconsin is 4.359 ppb.
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