Stay updated with real-time air quality in Madison, 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)
31
Good
Madison, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.20 μg/m³
0
55
155
255
425
605+
34.43 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
4.33 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Madison, Wisconsin
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AQI 31
Good
4.11μg/m³
PM2.5
13.79μg/m³
PM10
34.46ppb
O3
0.63ppb
SO2
4.33ppb
NO2
0.20ppm
CO
AQI 31
Good
4.08μg/m³
PM2.5
12.54μg/m³
PM10
34.39ppb
O3
0.64ppb
SO2
4.33ppb
NO2
0.20ppm
CO
AQI 31
Good
4.15μg/m³
PM2.5
14.23μg/m³
PM10
34.27ppb
O3
0.63ppb
SO2
4.34ppb
NO2
0.20ppm
CO
AQI 32
Good
4.35μg/m³
PM2.5
15.84μg/m³
PM10
34.54ppb
O3
0.66ppb
SO2
4.42ppb
NO2
0.20ppm
CO
AQI 33
Good
4.20μg/m³
PM2.5
14.64μg/m³
PM10
36.27ppb
O3
0.65ppb
SO2
4.29ppb
NO2
0.20ppm
CO
AQI 33
Good
4.22μg/m³
PM2.5
14.01μg/m³
PM10
36.37ppb
O3
0.60ppb
SO2
4.38ppb
NO2
0.19ppm
CO
Air quality and pollutant data for Wisconsin, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Madison, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Madison, Wisconsin was at its worst at 11:00:00 on 2026-03-08.
In the last 24 hours, the best air quality in Madison, Wisconsin was observed at 03:00:00 on 2026-03-09.
As of now, the AQI in Madison, Wisconsin is 31, indicating Good conditions.
Madison, Wisconsin air has the highest levels of O3.
Poor air quality in Madison, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Madison, Wisconsin are currently 4.046 μg/m3.
The PM10 concentration in Madison, Wisconsin is 13.198 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Madison, Wisconsin is 0.2 ppm.
Currently, Madison, Wisconsin has a sulfur dioxide (SO2) concentration of 0.633 ppb.
The current ozone (O3) level in Madison, Wisconsin at the moment is 34.429 ppm.
Nitrogen dioxide (NO2) level in Madison, Wisconsin at the moment is 4.33 ppb.
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