Stay updated with real-time air quality in Portage, Indiana 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)
29
Good
Portage, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.33 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.24 μg/m³
0
55
155
255
425
605+
30.89 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
7.53 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Portage, Indiana
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AQI 29
Good
3.15μg/m³
PM2.5
13.55μg/m³
PM10
31.14ppb
O3
0.21ppb
SO2
7.39ppb
NO2
0.17ppm
CO
AQI 30
Good
3.22μg/m³
PM2.5
14.02μg/m³
PM10
31.50ppb
O3
0.26ppb
SO2
7.43ppb
NO2
0.17ppm
CO
AQI 31
Good
3.35μg/m³
PM2.5
17.34μg/m³
PM10
32.79ppb
O3
0.33ppb
SO2
7.88ppb
NO2
0.18ppm
CO
AQI 29
Good
3.09μg/m³
PM2.5
12.70μg/m³
PM10
31.41ppb
O3
0.18ppb
SO2
7.32ppb
NO2
0.16ppm
CO
AQI 32
Good
3.46μg/m³
PM2.5
13.56μg/m³
PM10
35.11ppb
O3
0.32ppb
SO2
7.84ppb
NO2
0.19ppm
CO
AQI 29
Good
3.36μg/m³
PM2.5
15.79μg/m³
PM10
31.28ppb
O3
0.40ppb
SO2
7.62ppb
NO2
0.16ppm
CO
Air quality measurements for Indiana, 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 Portage, Indiana is updated on an hourly basis.
The worst air quality in Portage, Indiana was recorded at 04:00:00 on 2026-03-12.
The best air quality in Portage, Indiana was recorded at 04:00:00 on 2026-03-12.
The real-time air quality index in Portage, Indiana is 29, currently categorized as Good.
The most common pollutant in Portage, Indiana is O3.
If the air quality in Portage, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Portage, Indiana at present are 3.328 μg/m3.
The current PM10 levels in Portage, Indiana are 15.236 μg/m3.
The current carbon monoxide (CO) level in Portage, Indiana is 0.175 ppm.
The current sulfur dioxide (SO2) levels in Portage, Indiana are 0.281 ppb.
The current ozone (O3) levels at Portage, Indiana is 30.885 ppm.
The current nitrogen dioxide (NO2) levels at Portage, Indiana is 7.525 ppb.
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