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)
16
Good
La Crosse, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.00 μg/m³
0
55
155
255
425
605+
11.94 ppb
0
55
71
86
201
201+
0.15 ppb
0
36
76
186
605
1005+
1.92 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
La Crosse, Wisconsin
La Crosse, Wisconsin
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AQI 33
Good
6.44μg/m³
PM2.5
29.13μg/m³
PM10
14.61ppb
O3
0.36ppb
SO2
5.50ppb
NO2
0.20ppm
CO
AQI 33
Good
5.63μg/m³
PM2.5
25.07μg/m³
PM10
13.97ppb
O3
0.32ppb
SO2
4.82ppb
NO2
0.20ppm
CO
AQI 22
Good
3.76μg/m³
PM2.5
16.47μg/m³
PM10
11.79ppb
O3
0.15ppb
SO2
1.83ppb
NO2
0.17ppm
CO
AQI 19
Good
3.30μg/m³
PM2.5
15.00μg/m³
PM10
21.47ppb
O3
0.33ppb
SO2
4.76ppb
NO2
0.20ppm
CO
AQI 44
Good
8.25μg/m³
PM2.5
19.09μg/m³
PM10
19.88ppb
O3
0.57ppb
SO2
6.84ppb
NO2
0.19ppm
CO
AQI 22
Good
3.71μg/m³
PM2.5
6.40μg/m³
PM10
11.35ppb
O3
0.38ppb
SO2
6.34ppb
NO2
0.19ppm
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 03:00:00 on 2025-12-06.
In the last 24 hrs, the best air quality in La Crosse, Wisconsin was observed at 01:00:00 on 2025-12-07.
The current air quality in La Crosse, Wisconsin is 16, categorized as Good based on real-time data.
The most common pollutant in La Crosse, Wisconsin is PM2.5.
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 3.436 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 0.173 ppm.
The current sulfur dioxide (SO2) concentration at La Crosse, Wisconsin is 0.153 ppb.
The current ozone (O3) concentration at La Crosse, Wisconsin is 11.936 ppm.
The current nitrogen dioxide (NO2) concentration at La Crosse, Wisconsin is 1.922 ppb.
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