Stay updated with real-time air quality in Onalaska, 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)
66
Moderate
Onalaska, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
17.11 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
61.19 μg/m³
0
55
155
255
425
605+
33.53 ppb
0
55
71
86
201
201+
1.11 ppb
0
36
76
186
605
1005+
9.14 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Onalaska, Wisconsin
Onalaska, Wisconsin
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AQI 67
Moderate
17.62μg/m³
PM2.5
52.97μg/m³
PM10
31.00ppb
O3
1.13ppb
SO2
9.37ppb
NO2
0.24ppm
CO
AQI 66
Moderate
17.33μg/m³
PM2.5
59.28μg/m³
PM10
32.17ppb
O3
1.10ppb
SO2
9.19ppb
NO2
0.24ppm
CO
AQI 56
Moderate
11.73μg/m³
PM2.5
54.50μg/m³
PM10
33.33ppb
O3
1.10ppb
SO2
3.81ppb
NO2
0.23ppm
CO
AQI 66
Moderate
16.97μg/m³
PM2.5
74.86μg/m³
PM10
38.00ppb
O3
1.06ppb
SO2
3.24ppb
NO2
0.22ppm
CO
AQI 64
Moderate
15.91μg/m³
PM2.5
25.48μg/m³
PM10
31.23ppb
O3
1.09ppb
SO2
3.54ppb
NO2
0.20ppm
CO
AQI 90
Moderate
30.32μg/m³
PM2.5
102.30μg/m³
PM10
34.90ppb
O3
0.76ppb
SO2
11.91ppb
NO2
0.31ppm
CO
The air quality data for Wisconsin, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Onalaska, Wisconsin are available every hour.
Onalaska, Wisconsin experienced its worst air quality at 12:00:00, 2025-06-05.
The best air quality in Onalaska, Wisconsin was observed at 05:00:00 on 2025-06-05.
The air quality in Onalaska, Wisconsin right now is Moderate, with an AQI of 66.
In Onalaska, Wisconsin, PM2.5 is the most frequently found pollutant.
When air quality in Onalaska, Wisconsin is compromised, staying indoors and wearing a mask can reduce health risks.
Onalaska, Wisconsin currently has a PM2.5 concentration of 17.109 μg/m3.
Onalaska, Wisconsin currently has a PM10 concentration of 61.188 μg/m3.
The current carbon monoxide (CO) level in Onalaska, Wisconsin is 0.238 ppm.
The current sulfur dioxide (SO2) concentration in Onalaska, Wisconsin is 1.111 ppb.
Onalaska, Wisconsin currently has an ozone (O3) concentration of 33.53 ppm.
The current level of nitrogen dioxide (NO2) in Onalaska, Wisconsin is 9.139 ppb.
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