Stay updated with real-time air quality in Portage, 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)
54
Moderate
Portage, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.94 μg/m³
0
55
155
255
425
605+
21.44 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
21.24 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portage, Wisconsin
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AQI 38
Good
7.24μg/m³
PM2.5
10.24μg/m³
PM10
22.68ppb
O3
0.62ppb
SO2
22.89ppb
NO2
0.24ppm
CO
AQI 52
Moderate
10.17μg/m³
PM2.5
39.83μg/m³
PM10
20.45ppb
O3
0.65ppb
SO2
26.34ppb
NO2
0.22ppm
CO
AQI 54
Moderate
10.86μg/m³
PM2.5
28.33μg/m³
PM10
15.57ppb
O3
0.62ppb
SO2
25.94ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.11μg/m³
PM2.5
37.37μg/m³
PM10
23.26ppb
O3
0.55ppb
SO2
22.11ppb
NO2
0.29ppm
CO
AQI 52
Moderate
10.30μg/m³
PM2.5
46.52μg/m³
PM10
21.11ppb
O3
0.66ppb
SO2
26.65ppb
NO2
0.22ppm
CO
AQI 54
Moderate
11.07μg/m³
PM2.5
19.70μg/m³
PM10
15.03ppb
O3
0.62ppb
SO2
26.14ppb
NO2
0.23ppm
CO
Air quality and pollutant data for Wisconsin, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Portage, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Portage, Wisconsin was at its worst at 04:00:00 on 2025-12-12.
In the last 24 hours, the best air quality in Portage, Wisconsin was observed at 07:00:00 on 2025-12-11.
As of now, the AQI in Portage, Wisconsin is 54, indicating Moderate conditions.
Portage, Wisconsin air has the highest levels of PM2.5.
Poor air quality in Portage, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Portage, Wisconsin are currently 11.01 μg/m3.
The PM10 concentration in Portage, Wisconsin is 44.941 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Portage, Wisconsin is 0.223 ppm.
Currently, Portage, Wisconsin has a sulfur dioxide (SO2) concentration of 0.659 ppb.
The current ozone (O3) level in Portage, Wisconsin at the moment is 21.438 ppm.
Nitrogen dioxide (NO2) level in Portage, Wisconsin at the moment is 21.24 ppb.
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