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)
49
Good
Janesville, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.77 μg/m³
0
55
155
255
425
605+
31.93 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
6.27 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Janesville, Wisconsin
Janesville, Wisconsin
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AQI 60
Moderate
13.88μg/m³
PM2.5
51.76μg/m³
PM10
32.02ppb
O3
0.57ppb
SO2
5.81ppb
NO2
0.21ppm
CO
AQI 44
Good
7.60μg/m³
PM2.5
29.22μg/m³
PM10
35.77ppb
O3
0.56ppb
SO2
4.58ppb
NO2
0.20ppm
CO
AQI 67
Moderate
18.34μg/m³
PM2.5
83.90μg/m³
PM10
36.26ppb
O3
0.61ppb
SO2
5.69ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.27μg/m³
PM2.5
56.98μg/m³
PM10
30.65ppb
O3
0.57ppb
SO2
5.83ppb
NO2
0.21ppm
CO
AQI 41
Good
5.18μg/m³
PM2.5
21.68μg/m³
PM10
43.64ppb
O3
0.51ppb
SO2
1.50ppb
NO2
0.17ppm
CO
AQI 67
Moderate
18.27μg/m³
PM2.5
84.67μg/m³
PM10
34.37ppb
O3
0.57ppb
SO2
5.72ppb
NO2
0.21ppm
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 10:00:00, 2026-10-22.
The best air quality in Janesville, Wisconsin was observed at 03:00:00 on 2026-10-22.
The air quality in Janesville, Wisconsin right now is Good, with an AQI of 49.
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 8.986 μg/m3.
Janesville, Wisconsin currently has a PM10 concentration of 31.766 μg/m3.
The current carbon monoxide (CO) level in Janesville, Wisconsin is 0.217 ppm.
The current sulfur dioxide (SO2) concentration in Janesville, Wisconsin is 0.645 ppb.
Janesville, Wisconsin currently has an ozone (O3) concentration of 31.927 ppm.
The current level of nitrogen dioxide (NO2) in Janesville, Wisconsin is 6.268 ppb.
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