Stay updated with real-time air quality in Brookfield, 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)
49
Good
Brookfield, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.73 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.13 μg/m³
0
55
155
255
425
605+
20.41 ppb
0
55
71
86
201
201+
0.81 ppb
0
36
76
186
605
1005+
7.42 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Brookfield, Wisconsin
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AQI 54
Moderate
10.55μg/m³
PM2.5
12.79μg/m³
PM10
21.96ppb
O3
0.78ppb
SO2
7.87ppb
NO2
0.24ppm
CO
AQI 44
Good
8.46μg/m³
PM2.5
40.23μg/m³
PM10
18.26ppb
O3
0.85ppb
SO2
8.62ppb
NO2
0.26ppm
CO
AQI 52
Moderate
9.70μg/m³
PM2.5
35.92μg/m³
PM10
15.38ppb
O3
0.96ppb
SO2
7.19ppb
NO2
0.28ppm
CO
AQI 54
Moderate
10.59μg/m³
PM2.5
12.21μg/m³
PM10
22.16ppb
O3
0.77ppb
SO2
7.88ppb
NO2
0.24ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
14.87μg/m³
PM10
21.93ppb
O3
0.72ppb
SO2
7.00ppb
NO2
0.22ppm
CO
AQI 52
Moderate
9.77μg/m³
PM2.5
33.29μg/m³
PM10
15.54ppb
O3
0.95ppb
SO2
7.61ppb
NO2
0.28ppm
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 Brookfield, Wisconsin is updated on an hourly basis.
The worst air quality in Brookfield, Wisconsin was recorded at 03:00:00 on 2025-12-07.
The best air quality in Brookfield, Wisconsin was recorded at 12:00:00 on 2025-12-07.
The real-time air quality index in Brookfield, Wisconsin is 49, currently categorized as Good.
The most common pollutant in Brookfield, Wisconsin is PM2.5.
If the air quality in Brookfield, Wisconsin is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Brookfield, Wisconsin at present are 8.73 μg/m3.
The current PM10 levels in Brookfield, Wisconsin are 22.13 μg/m3.
The current carbon monoxide (CO) level in Brookfield, Wisconsin is 0.247 ppm.
The current sulfur dioxide (SO2) levels in Brookfield, Wisconsin are 0.814 ppb.
The current ozone (O3) levels at Brookfield, Wisconsin is 20.413 ppm.
The current nitrogen dioxide (NO2) levels at Brookfield, Wisconsin is 7.418 ppb.
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