Stay updated with real-time air quality in Brown Deer, 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)
44
Good
Brown Deer, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.98 μg/m³
0
55
155
255
425
605+
38.59 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
9.37 ppb
0
54
101
361
1250
2050+
0.43 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Brown Deer, Wisconsin
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AQI 41
Good
6.62μg/m³
PM2.5
29.01μg/m³
PM10
44.16ppb
O3
0.51ppb
SO2
6.13ppb
NO2
0.35ppm
CO
AQI 40
Good
6.60μg/m³
PM2.5
30.79μg/m³
PM10
43.37ppb
O3
0.50ppb
SO2
3.35ppb
NO2
0.34ppm
CO
AQI 43
Good
6.41μg/m³
PM2.5
28.36μg/m³
PM10
45.85ppb
O3
0.50ppb
SO2
8.84ppb
NO2
0.29ppm
CO
AQI 41
Good
6.61μg/m³
PM2.5
30.63μg/m³
PM10
43.51ppb
O3
0.50ppb
SO2
3.80ppb
NO2
0.34ppm
CO
AQI 39
Good
6.34μg/m³
PM2.5
19.88μg/m³
PM10
41.60ppb
O3
0.50ppb
SO2
6.71ppb
NO2
0.28ppm
CO
AQI 42
Good
6.82μg/m³
PM2.5
28.04μg/m³
PM10
45.16ppb
O3
0.52ppb
SO2
9.56ppb
NO2
0.36ppm
CO
Air quality and pollutant data for Wisconsin, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Brown Deer, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Brown Deer, Wisconsin was at its worst at 10:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Brown Deer, Wisconsin was observed at 01:00:00 on 2026-03-09.
As of now, the AQI in Brown Deer, Wisconsin is 44, indicating Good conditions.
Brown Deer, Wisconsin air has the highest levels of PM2.5.
Poor air quality in Brown Deer, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Brown Deer, Wisconsin are currently 8.343 μg/m3.
The PM10 concentration in Brown Deer, Wisconsin is 26.982 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Brown Deer, Wisconsin is 0.429 ppm.
Currently, Brown Deer, Wisconsin has a sulfur dioxide (SO2) concentration of 0.406 ppb.
The current ozone (O3) level in Brown Deer, Wisconsin at the moment is 38.595 ppm.
Nitrogen dioxide (NO2) level in Brown Deer, Wisconsin at the moment is 9.373 ppb.
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