Stay updated with real-time air quality in Gary, 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)
24
Good
Gary, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.31 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.59 μg/m³
0
55
155
255
425
605+
26.39 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
3.46 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Gary, Indiana
Scroll To Air Quality MapLoading...
AQI 29
Good
2.17μg/m³
PM2.5
8.99μg/m³
PM10
30.73ppb
O3
0.45ppb
SO2
10.10ppb
NO2
0.17ppm
CO
AQI 29
Good
2.08μg/m³
PM2.5
8.76μg/m³
PM10
30.88ppb
O3
0.45ppb
SO2
10.22ppb
NO2
0.17ppm
CO
AQI 27
Good
3.29μg/m³
PM2.5
13.82μg/m³
PM10
29.02ppb
O3
0.40ppb
SO2
18.61ppb
NO2
0.17ppm
CO
AQI 27
Good
3.51μg/m³
PM2.5
14.86μg/m³
PM10
28.79ppb
O3
0.41ppb
SO2
17.59ppb
NO2
0.17ppm
CO
AQI 27
Good
3.72μg/m³
PM2.5
15.80μg/m³
PM10
28.52ppb
O3
0.41ppb
SO2
18.57ppb
NO2
0.17ppm
CO
AQI 28
Good
3.01μg/m³
PM2.5
12.38μg/m³
PM10
29.66ppb
O3
0.42ppb
SO2
9.70ppb
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 Gary, Indiana is updated on an hourly basis.
The worst air quality in Gary, Indiana was recorded at 06:00:00 on 2026-03-11.
The best air quality in Gary, Indiana was recorded at 11:00:00 on 2026-03-11.
The real-time air quality index in Gary, Indiana is 24, currently categorized as Good.
The most common pollutant in Gary, Indiana is O3.
If the air quality in Gary, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Gary, Indiana at present are 3.31 μg/m3.
The current PM10 levels in Gary, Indiana are 13.591 μg/m3.
The current carbon monoxide (CO) level in Gary, Indiana is 0.196 ppm.
The current sulfur dioxide (SO2) levels in Gary, Indiana are 0.273 ppb.
The current ozone (O3) levels at Gary, Indiana is 26.386 ppm.
The current nitrogen dioxide (NO2) levels at Gary, Indiana is 3.459 ppb.
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