Stay updated with real-time air quality in La Crosse, 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)
32
Good
La Crosse, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.00 μg/m³
0
55
155
255
425
605+
34.65 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
0.82 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
La Crosse, Wisconsin
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AQI 38
Good
4.38μg/m³
PM2.5
19.30μg/m³
PM10
40.55ppb
O3
0.64ppb
SO2
4.01ppb
NO2
0.27ppm
CO
AQI 37
Good
4.05μg/m³
PM2.5
16.91μg/m³
PM10
39.72ppb
O3
0.61ppb
SO2
3.42ppb
NO2
0.24ppm
CO
AQI 40
Good
2.62μg/m³
PM2.5
10.61μg/m³
PM10
42.65ppb
O3
0.30ppb
SO2
0.93ppb
NO2
0.13ppm
CO
AQI 31
Good
3.21μg/m³
PM2.5
14.03μg/m³
PM10
34.01ppb
O3
0.63ppb
SO2
4.25ppb
NO2
0.30ppm
CO
AQI 32
Good
4.58μg/m³
PM2.5
16.40μg/m³
PM10
35.20ppb
O3
0.62ppb
SO2
5.50ppb
NO2
0.23ppm
CO
AQI 36
Good
3.32μg/m³
PM2.5
17.97μg/m³
PM10
39.07ppb
O3
0.53ppb
SO2
4.09ppb
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 La Crosse, Wisconsin is updated every hour.
The worst air quality in La Crosse, Wisconsin in the last 24 hours was observed at 07:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in La Crosse, Wisconsin was observed at 02:00:00 on 2026-03-09.
The current air quality in La Crosse, Wisconsin is 32, categorized as Good based on real-time data.
The most common pollutant in La Crosse, Wisconsin is O3.
If the air quality in La Crosse, Wisconsin is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at La Crosse, Wisconsin is 3.384 μg/m3.
The current PM10 concentration at La Crosse, Wisconsin is 15 μg/m3.
The current carbon monoxide (CO) concentration at La Crosse, Wisconsin is 0.128 ppm.
The current sulfur dioxide (SO2) concentration at La Crosse, Wisconsin is 0.273 ppb.
The current ozone (O3) concentration at La Crosse, Wisconsin is 34.646 ppm.
The current nitrogen dioxide (NO2) concentration at La Crosse, Wisconsin is 0.818 ppb.
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