Stay updated with real-time air quality in Winona, Minnesota 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)
41
Good
Winona, Minnesota
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.08 μg/m³
0
55
155
255
425
605+
44.22 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
0.75 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Winona, Minnesota
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AQI 38
Good
4.08μg/m³
PM2.5
18.17μg/m³
PM10
40.74ppb
O3
0.43ppb
SO2
3.88ppb
NO2
0.26ppm
CO
AQI 37
Good
4.54μg/m³
PM2.5
21.34μg/m³
PM10
40.27ppb
O3
0.42ppb
SO2
4.59ppb
NO2
0.29ppm
CO
AQI 35
Good
3.36μg/m³
PM2.5
15.00μg/m³
PM10
38.39ppb
O3
0.26ppb
SO2
0.73ppb
NO2
0.13ppm
CO
AQI 31
Good
3.50μg/m³
PM2.5
16.00μg/m³
PM10
33.03ppb
O3
0.81ppb
SO2
5.09ppb
NO2
0.33ppm
CO
AQI 39
Good
3.32μg/m³
PM2.5
16.02μg/m³
PM10
41.71ppb
O3
0.51ppb
SO2
4.79ppb
NO2
0.30ppm
CO
AQI 37
Good
3.18μg/m³
PM2.5
16.52μg/m³
PM10
40.15ppb
O3
0.68ppb
SO2
5.19ppb
NO2
0.34ppm
CO
Air quality measurements for Minnesota, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Winona, Minnesota is updated on an hourly basis.
The worst air quality in Winona, Minnesota was recorded at 08:00:00 on 2026-03-09.
The best air quality in Winona, Minnesota was recorded at 02:00:00 on 2026-03-09.
The real-time air quality index in Winona, Minnesota is 41, currently categorized as Good.
The most common pollutant in Winona, Minnesota is O3.
If the air quality in Winona, Minnesota is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Winona, Minnesota at present are 2.17 μg/m3.
The current PM10 levels in Winona, Minnesota are 9.084 μg/m3.
The current carbon monoxide (CO) level in Winona, Minnesota is 0.128 ppm.
The current sulfur dioxide (SO2) levels in Winona, Minnesota are 0.265 ppb.
The current ozone (O3) levels at Winona, Minnesota is 44.223 ppm.
The current nitrogen dioxide (NO2) levels at Winona, Minnesota is 0.748 ppb.
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