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)
18
Good
Milwaukee, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.45 μg/m³
0
55
155
255
425
605+
19.29 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
6.53 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Milwaukee, Wisconsin
Milwaukee, Wisconsin
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AQI 22
Good
4.26μg/m³
PM2.5
20.34μg/m³
PM10
21.61ppb
O3
0.28ppb
SO2
5.76ppb
NO2
0.26ppm
CO
AQI 22
Good
4.25μg/m³
PM2.5
20.58μg/m³
PM10
21.95ppb
O3
0.28ppb
SO2
5.53ppb
NO2
0.26ppm
CO
AQI 27
Good
4.63μg/m³
PM2.5
19.11μg/m³
PM10
18.73ppb
O3
0.28ppb
SO2
8.32ppb
NO2
0.27ppm
CO
AQI 27
Good
4.53μg/m³
PM2.5
18.05μg/m³
PM10
18.70ppb
O3
0.28ppb
SO2
8.70ppb
NO2
0.28ppm
CO
AQI 22
Good
3.94μg/m³
PM2.5
14.69μg/m³
PM10
19.50ppb
O3
0.28ppb
SO2
9.84ppb
NO2
0.28ppm
CO
AQI 22
Good
3.65μg/m³
PM2.5
14.35μg/m³
PM10
19.02ppb
O3
0.28ppb
SO2
6.48ppb
NO2
0.25ppm
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 07:00:00 on 2026-06-14.
The best air quality in Milwaukee, Wisconsin was recorded at 03:00:00 on 2026-06-15.
The real-time air quality index in Milwaukee, Wisconsin is 27, currently categorized as Good.
The most common pollutant in Milwaukee, Wisconsin is PM2.5.
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 5.075 μg/m3.
The current PM10 levels in Milwaukee, Wisconsin are 20.683 μg/m3.
The current carbon monoxide (CO) level in Milwaukee, Wisconsin is 0.277 ppm.
The current sulfur dioxide (SO2) levels in Milwaukee, Wisconsin are 0.294 ppb.
The current ozone (O3) levels at Milwaukee, Wisconsin is 18.337 ppm.
The current nitrogen dioxide (NO2) levels at Milwaukee, Wisconsin is 8.32 ppb.
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