Stay updated with real-time air quality in Milwaukee, 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)
38
Good
Milwaukee, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.63 μg/m³
0
55
155
255
425
605+
18.59 ppb
0
55
71
86
201
201+
0.86 ppb
0
36
76
186
605
1005+
15.08 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Milwaukee, Wisconsin
Milwaukee, Wisconsin
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AQI 23
Good
2.75μg/m³
PM2.5
10.00μg/m³
PM10
24.77ppb
O3
1.00ppb
SO2
1.52ppb
NO2
0.19ppm
CO
AQI 23
Good
2.74μg/m³
PM2.5
9.88μg/m³
PM10
24.84ppb
O3
1.00ppb
SO2
1.41ppb
NO2
0.19ppm
CO
AQI 22
Good
2.91μg/m³
PM2.5
11.18μg/m³
PM10
23.75ppb
O3
0.98ppb
SO2
2.93ppb
NO2
0.19ppm
CO
AQI 22
Good
2.88μg/m³
PM2.5
10.66μg/m³
PM10
23.69ppb
O3
0.98ppb
SO2
3.10ppb
NO2
0.19ppm
CO
AQI 22
Good
2.79μg/m³
PM2.5
9.11μg/m³
PM10
23.74ppb
O3
0.98ppb
SO2
3.40ppb
NO2
0.20ppm
CO
AQI 22
Good
2.77μg/m³
PM2.5
10.16μg/m³
PM10
24.46ppb
O3
0.99ppb
SO2
2.10ppb
NO2
0.19ppm
CO
Air quality measurements for Wisconsin, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Milwaukee, Wisconsin is updated on an hourly basis.
The worst air quality in Milwaukee, Wisconsin was recorded at 10:00:00 on 2025-10-24.
The best air quality in Milwaukee, Wisconsin was recorded at 05:00:00 on 2025-10-24.
The real-time air quality index in Milwaukee, Wisconsin is 21, currently categorized as Good.
The most common pollutant in Milwaukee, Wisconsin is O3.
If the air quality in Milwaukee, Wisconsin is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Milwaukee, Wisconsin at present are 3.167 μg/m3.
The current PM10 levels in Milwaukee, Wisconsin are 13.76 μg/m3.
The current carbon monoxide (CO) level in Milwaukee, Wisconsin is 0.206 ppm.
The current sulfur dioxide (SO2) levels in Milwaukee, Wisconsin are 0.995 ppb.
The current ozone (O3) levels at Milwaukee, Wisconsin is 22.844 ppm.
The current nitrogen dioxide (NO2) levels at Milwaukee, Wisconsin is 4.386 ppb.
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