Stay updated with real-time air quality in Mequon, 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)
56
Moderate
Mequon, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.41 μg/m³
0
55
155
255
425
605+
20.80 ppb
0
55
71
86
201
201+
1.17 ppb
0
36
76
186
605
1005+
7.93 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Mequon, Wisconsin
Mequon, Wisconsin
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AQI 56
Moderate
11.90μg/m³
PM2.5
33.62μg/m³
PM10
20.45ppb
O3
1.06ppb
SO2
7.94ppb
NO2
0.22ppm
CO
AQI 54
Moderate
11.20μg/m³
PM2.5
29.74μg/m³
PM10
24.17ppb
O3
1.40ppb
SO2
7.42ppb
NO2
0.27ppm
CO
AQI 56
Moderate
11.86μg/m³
PM2.5
30.64μg/m³
PM10
20.67ppb
O3
1.07ppb
SO2
7.95ppb
NO2
0.23ppm
CO
AQI 56
Moderate
11.87μg/m³
PM2.5
30.91μg/m³
PM10
20.32ppb
O3
1.10ppb
SO2
7.85ppb
NO2
0.22ppm
CO
AQI 54
Moderate
11.20μg/m³
PM2.5
29.74μg/m³
PM10
24.17ppb
O3
1.40ppb
SO2
7.42ppb
NO2
0.27ppm
CO
AQI 56
Moderate
11.84μg/m³
PM2.5
31.73μg/m³
PM10
20.37ppb
O3
1.13ppb
SO2
7.81ppb
NO2
0.22ppm
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 Mequon, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Mequon, Wisconsin was at its worst at 01:00:00 on 2025-12-09.
In the last 24 hours, the best air quality in Mequon, Wisconsin was observed at 08:00:00 on 2025-12-08.
As of now, the AQI in Mequon, Wisconsin is 56, indicating Moderate conditions.
Mequon, Wisconsin air has the highest levels of PM2.5.
Poor air quality in Mequon, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Mequon, Wisconsin are currently 12.181 μg/m3.
The PM10 concentration in Mequon, Wisconsin is 44.415 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Mequon, Wisconsin is 0.232 ppm.
Currently, Mequon, Wisconsin has a sulfur dioxide (SO2) concentration of 1.171 ppb.
The current ozone (O3) level in Mequon, Wisconsin at the moment is 20.805 ppm.
Nitrogen dioxide (NO2) level in Mequon, Wisconsin at the moment is 7.926 ppb.
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