Stay updated with real-time air quality in South 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)
73
Moderate
South Milwaukee, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
20.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
58.50 μg/m³
0
55
155
255
425
605+
23.09 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
3.94 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South Milwaukee, Wisconsin
South Milwaukee, Wisconsin
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AQI 75
Moderate
21.54μg/m³
PM2.5
48.02μg/m³
PM10
22.57ppb
O3
0.41ppb
SO2
4.37ppb
NO2
0.29ppm
CO
AQI 75
Moderate
21.80μg/m³
PM2.5
50.96μg/m³
PM10
22.27ppb
O3
0.38ppb
SO2
4.42ppb
NO2
0.29ppm
CO
AQI 75
Moderate
21.80μg/m³
PM2.5
45.20μg/m³
PM10
22.28ppb
O3
0.40ppb
SO2
5.02ppb
NO2
0.29ppm
CO
AQI 73
Moderate
21.22μg/m³
PM2.5
49.58μg/m³
PM10
23.36ppb
O3
0.50ppb
SO2
3.90ppb
NO2
0.28ppm
CO
AQI 75
Moderate
22.04μg/m³
PM2.5
48.34μg/m³
PM10
22.04ppb
O3
0.38ppb
SO2
4.72ppb
NO2
0.29ppm
CO
AQI 75
Moderate
21.90μg/m³
PM2.5
45.38μg/m³
PM10
22.38ppb
O3
0.41ppb
SO2
4.85ppb
NO2
0.29ppm
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 South Milwaukee, Wisconsin is updated on an hourly basis.
The worst air quality in South Milwaukee, Wisconsin was recorded at 04:00:00 on 2026-08-23.
The best air quality in South Milwaukee, Wisconsin was recorded at 09:00:00 on 2026-08-23.
The real-time air quality index in South Milwaukee, Wisconsin is 75, currently categorized as Moderate.
The most common pollutant in South Milwaukee, Wisconsin is PM2.5.
If the air quality in South Milwaukee, Wisconsin is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in South Milwaukee, Wisconsin at present are 21.57 μg/m3.
The current PM10 levels in South Milwaukee, Wisconsin are 46.229 μg/m3.
The current carbon monoxide (CO) level in South Milwaukee, Wisconsin is 0.292 ppm.
The current sulfur dioxide (SO2) levels in South Milwaukee, Wisconsin are 0.4 ppb.
The current ozone (O3) levels at South Milwaukee, Wisconsin is 22.43 ppm.
The current nitrogen dioxide (NO2) levels at South Milwaukee, Wisconsin is 4.666 ppb.
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