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)
17
Good
Portage, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.86 μg/m³
0
55
155
255
425
605+
9.17 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
5.79 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portage, Wisconsin
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AQI 17
Good
1.51μg/m³
PM2.5
2.17μg/m³
PM10
17.94ppb
O3
0.63ppb
SO2
3.69ppb
NO2
0.23ppm
CO
AQI 16
Good
1.63μg/m³
PM2.5
4.86μg/m³
PM10
17.43ppb
O3
0.65ppb
SO2
3.79ppb
NO2
0.21ppm
CO
AQI 16
Good
1.78μg/m³
PM2.5
4.68μg/m³
PM10
16.99ppb
O3
0.63ppb
SO2
3.80ppb
NO2
0.21ppm
CO
AQI 18
Good
1.57μg/m³
PM2.5
4.52μg/m³
PM10
19.27ppb
O3
0.56ppb
SO2
3.54ppb
NO2
0.26ppm
CO
AQI 15
Good
1.62μg/m³
PM2.5
4.79μg/m³
PM10
16.21ppb
O3
0.86ppb
SO2
3.84ppb
NO2
0.21ppm
CO
AQI 16
Good
1.86μg/m³
PM2.5
3.79μg/m³
PM10
17.31ppb
O3
0.63ppb
SO2
3.80ppb
NO2
0.20ppm
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 11:00:00 on 2025-10-22.
In the last 24 hours, the best air quality in Portage, Wisconsin was observed at 01:00:00 on 2025-10-23.
As of now, the AQI in Portage, Wisconsin is 16, indicating Good conditions.
Portage, Wisconsin air has the highest levels of O3.
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 1.582 μg/m3.
The PM10 concentration in Portage, Wisconsin is 2.866 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Portage, Wisconsin is 0.209 ppm.
Currently, Portage, Wisconsin has a sulfur dioxide (SO2) concentration of 0.673 ppb.
The current ozone (O3) level in Portage, Wisconsin at the moment is 17.271 ppm.
Nitrogen dioxide (NO2) level in Portage, Wisconsin at the moment is 3.867 ppb.
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