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)
37
Good
Portage, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.58 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.92 μg/m³
0
55
155
255
425
605+
39.59 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
6.47 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Portage, Indiana
Portage, Indiana
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AQI 35
Good
2.03μg/m³
PM2.5
8.62μg/m³
PM10
37.95ppb
O3
0.35ppb
SO2
6.49ppb
NO2
0.17ppm
CO
AQI 36
Good
1.96μg/m³
PM2.5
8.44μg/m³
PM10
38.55ppb
O3
0.37ppb
SO2
6.52ppb
NO2
0.17ppm
CO
AQI 36
Good
2.04μg/m³
PM2.5
9.80μg/m³
PM10
38.68ppb
O3
0.39ppb
SO2
6.64ppb
NO2
0.17ppm
CO
AQI 34
Good
2.39μg/m³
PM2.5
9.91μg/m³
PM10
37.18ppb
O3
0.34ppb
SO2
6.55ppb
NO2
0.17ppm
CO
AQI 35
Good
2.56μg/m³
PM2.5
13.20μg/m³
PM10
37.52ppb
O3
0.39ppb
SO2
7.12ppb
NO2
0.17ppm
CO
AQI 38
Good
3.08μg/m³
PM2.5
12.37μg/m³
PM10
40.99ppb
O3
0.43ppb
SO2
7.52ppb
NO2
0.17ppm
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 07:00:00 on 2026-06-15.
The best air quality in Portage, Indiana was recorded at 12:00:00 on 2026-06-15.
The real-time air quality index in Portage, Indiana is 37, 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 1.582 μg/m3.
The current PM10 levels in Portage, Indiana are 6.92 μg/m3.
The current carbon monoxide (CO) level in Portage, Indiana is 0.169 ppm.
The current sulfur dioxide (SO2) levels in Portage, Indiana are 0.379 ppb.
The current ozone (O3) levels at Portage, Indiana is 39.591 ppm.
The current nitrogen dioxide (NO2) levels at Portage, Indiana is 6.466 ppb.
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