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)
21
Good
La Crosse, Wisconsin
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.00 μg/m³
0
55
155
255
425
605+
22.91 ppb
0
55
71
86
201
201+
0.16 ppb
0
36
76
186
605
1005+
1.04 ppb
0
54
101
361
1250
2050+
0.12 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 20
Good
1.60μg/m³
PM2.5
7.67μg/m³
PM10
22.26ppb
O3
0.42ppb
SO2
1.57ppb
NO2
0.17ppm
CO
AQI 19
Good
1.75μg/m³
PM2.5
8.28μg/m³
PM10
21.28ppb
O3
0.38ppb
SO2
1.47ppb
NO2
0.16ppm
CO
AQI 19
Good
2.17μg/m³
PM2.5
9.08μg/m³
PM10
21.27ppb
O3
0.17ppb
SO2
1.10ppb
NO2
0.12ppm
CO
AQI 21
Good
0.80μg/m³
PM2.5
3.00μg/m³
PM10
23.00ppb
O3
0.54ppb
SO2
1.60ppb
NO2
0.18ppm
CO
AQI 16
Good
1.10μg/m³
PM2.5
6.59μg/m³
PM10
17.47ppb
O3
0.55ppb
SO2
1.84ppb
NO2
0.15ppm
CO
AQI 18
Good
0.60μg/m³
PM2.5
2.04μg/m³
PM10
18.88ppb
O3
0.65ppb
SO2
1.69ppb
NO2
0.17ppm
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 11:00:00 on 2025-10-21.
In the last 24 hrs, the best air quality in La Crosse, Wisconsin was observed at 03:00:00 on 2025-10-21.
The current air quality in La Crosse, Wisconsin is 21, 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 3.151 μg/m3.
The current PM10 concentration at La Crosse, Wisconsin is 14 μg/m3.
The current carbon monoxide (CO) concentration at La Crosse, Wisconsin is 0.121 ppm.
The current sulfur dioxide (SO2) concentration at La Crosse, Wisconsin is 0.16 ppb.
The current ozone (O3) concentration at La Crosse, Wisconsin is 22.907 ppm.
The current nitrogen dioxide (NO2) concentration at La Crosse, Wisconsin is 1.036 ppb.
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