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)
19
Good
Janesville, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
1.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.51 μg/m³
0
55
155
255
425
605+
20.48 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
2.00 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Janesville, Wisconsin
Janesville, Wisconsin
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AQI 19
Good
1.51μg/m³
PM2.5
4.35μg/m³
PM10
20.61ppb
O3
0.68ppb
SO2
1.86ppb
NO2
0.10ppm
CO
AQI 19
Good
0.92μg/m³
PM2.5
3.25μg/m³
PM10
21.49ppb
O3
0.48ppb
SO2
1.63ppb
NO2
0.11ppm
CO
AQI 19
Good
1.91μg/m³
PM2.5
8.40μg/m³
PM10
20.37ppb
O3
0.65ppb
SO2
1.85ppb
NO2
0.10ppm
CO
AQI 20
Good
1.18μg/m³
PM2.5
3.44μg/m³
PM10
22.05ppb
O3
0.65ppb
SO2
1.85ppb
NO2
0.10ppm
CO
AQI 15
Good
0.72μg/m³
PM2.5
2.46μg/m³
PM10
16.21ppb
O3
0.17ppb
SO2
1.11ppb
NO2
0.12ppm
CO
AQI 19
Good
1.89μg/m³
PM2.5
8.42μg/m³
PM10
20.05ppb
O3
0.67ppb
SO2
1.85ppb
NO2
0.10ppm
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 03:00:00, 2025-10-22.
The best air quality in Janesville, Wisconsin was observed at 02:00:00 on 2025-10-21.
The air quality in Janesville, Wisconsin right now is Good, with an AQI of 19.
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 1.187 μg/m3.
Janesville, Wisconsin currently has a PM10 concentration of 3.507 μg/m3.
The current carbon monoxide (CO) level in Janesville, Wisconsin is 0.131 ppm.
The current sulfur dioxide (SO2) concentration in Janesville, Wisconsin is 0.627 ppb.
Janesville, Wisconsin currently has an ozone (O3) concentration of 20.481 ppm.
The current level of nitrogen dioxide (NO2) in Janesville, Wisconsin is 1.996 ppb.
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