Stay updated with real-time air quality in West Allis, 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)
124
Unhealthy for sensitive groups
West Allis, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
45.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
174.18 μg/m³
0
55
155
255
425
605+
50.69 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
3.62 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
West Allis, Wisconsin
West Allis, Wisconsin
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AQI 124
Unhealthy for sensitive groups
45.43μg/m³
PM2.5
190.56μg/m³
PM10
50.42ppb
O3
0.37ppb
SO2
3.32ppb
NO2
0.29ppm
CO
AQI 124
Unhealthy for sensitive groups
44.88μg/m³
PM2.5
123.64μg/m³
PM10
52.20ppb
O3
0.38ppb
SO2
4.68ppb
NO2
0.29ppm
CO
AQI 122
Unhealthy for sensitive groups
44.44μg/m³
PM2.5
110.82μg/m³
PM10
52.54ppb
O3
0.38ppb
SO2
4.95ppb
NO2
0.30ppm
CO
AQI 132
Unhealthy for sensitive groups
47.20μg/m³
PM2.5
217.26μg/m³
PM10
48.18ppb
O3
0.38ppb
SO2
3.19ppb
NO2
0.29ppm
CO
AQI 134
Unhealthy for sensitive groups
48.52μg/m³
PM2.5
181.47μg/m³
PM10
55.09ppb
O3
0.36ppb
SO2
3.63ppb
NO2
0.28ppm
CO
AQI 127
Unhealthy for sensitive groups
46.00μg/m³
PM2.5
73.95μg/m³
PM10
55.84ppb
O3
0.35ppb
SO2
3.32ppb
NO2
0.28ppm
CO
Air quality data and pollutant measurements for Wisconsin, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for West Allis, Wisconsin is updated every hour.
The worst air quality in West Allis, Wisconsin in the last 24 hours was observed at 09:00:00 on 2025-06-05.
In the last 24 hrs, the best air quality in West Allis, Wisconsin was observed at 04:00:00 on 2025-06-05.
The current air quality in West Allis, Wisconsin is 124, categorized as Unhealthy for Sensitive Groups based on real-time data.
The most common pollutant in West Allis, Wisconsin is PM2.5.
If the air quality in West Allis, Wisconsin is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at West Allis, Wisconsin is 45.076 μg/m3.
The current PM10 concentration at West Allis, Wisconsin is 174.178 μg/m3.
The current carbon monoxide (CO) concentration at West Allis, Wisconsin is 0.29 ppm.
The current sulfur dioxide (SO2) concentration at West Allis, Wisconsin is 0.373 ppb.
The current ozone (O3) concentration at West Allis, Wisconsin is 50.686 ppm.
The current nitrogen dioxide (NO2) concentration at West Allis, Wisconsin is 3.62 ppb.
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