Real-time air quality index in Portage, Indiana today
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)
44
Good
Portage, Indiana
Last updated: ... (Local time)
Common air pollutants in Portage, Indiana
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
8.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
37.63 μg/m³
0
55
155
255
425
605+
Ozone (O3)
47.89 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.64 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
9.21 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Portage, Indiana
Portage, Indiana
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Portage, Indiana air quality map: Real-time AQI near you
Air quality in nearby cities
Lake Station, Indiana
AQI 44
Good
7.84μg/m³
PM2.5
34.97μg/m³
PM10
47.06ppb
O3
0.66ppb
SO2
8.76ppb
NO2
0.30ppm
CO
Hobart, Indiana
AQI 44
Good
8.19μg/m³
PM2.5
36.53μg/m³
PM10
47.45ppb
O3
0.66ppb
SO2
8.99ppb
NO2
0.30ppm
CO
Chesterton, Indiana
AQI 44
Good
8.31μg/m³
PM2.5
37.14μg/m³
PM10
47.75ppb
O3
0.63ppb
SO2
8.58ppb
NO2
0.31ppm
CO
Gary, Indiana
AQI 44
Good
7.25μg/m³
PM2.5
32.19μg/m³
PM10
46.69ppb
O3
0.68ppb
SO2
8.56ppb
NO2
0.30ppm
CO
Valparaiso, Indiana
AQI 49
Good
8.82μg/m³
PM2.5
40.34μg/m³
PM10
51.84ppb
O3
0.74ppb
SO2
4.74ppb
NO2
0.31ppm
CO
Merrillville, Indiana
AQI 49
Good
8.87μg/m³
PM2.5
41.99μg/m³
PM10
48.72ppb
O3
0.76ppb
SO2
6.15ppb
NO2
0.29ppm
CO
How accurate is Indiana, USA air quality data?
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
Frequently asked questions
How frequently is the air quality data for Portage, Indiana updated?
Air quality data for Portage, Indiana is updated on an hourly basis.
When did Portage, Indiana experience the worst air quality in the last 24 hours?
The worst air quality in Portage, Indiana was recorded at 12:00:00 on 2026-04-23.
When did Portage, Indiana have its best air quality in the last 24 hours?
The best air quality in Portage, Indiana was recorded at 06:00:00 on 2026-04-23.
What is the real-time air quality index for Portage, Indiana?
The real-time air quality index in Portage, Indiana is 44, currently categorized as Good.
Which pollutant is found most often in Portage, Indiana?
The most common pollutant in Portage, Indiana is O3.
What can I do if the air quality in Portage, Indiana is poor?
If the air quality in Portage, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Portage, Indiana?
The measured PM2.5 levels in Portage, Indiana at present are 8.422 μg/m3.
What are the current PM10 levels at Portage, Indiana?
The current PM10 levels in Portage, Indiana are 37.633 μg/m3.
What are the current carbon monoxide (CO) levels at Portage, Indiana?
The current carbon monoxide (CO) level in Portage, Indiana is 0.303 ppm.
What are the current sulfur dioxide (SO2) levels at Portage, Indiana?
The current sulfur dioxide (SO2) levels in Portage, Indiana are 0.638 ppb.
What are the current ozone (O3) levels at Portage, Indiana?
The current ozone (O3) levels at Portage, Indiana is 47.889 ppm.
What are the current nitrogen dioxide (NO2) levels at Portage, Indiana?
The current nitrogen dioxide (NO2) levels at Portage, Indiana is 9.215 ppb.
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