Real-time air quality index in Gary, Indiana today
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)
44
Good
Gary, Indiana
Last updated: ... (Local time)
Common air pollutants in Gary, Indiana
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
8.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
36.74 μg/m³
0
55
155
255
425
605+
Ozone (O3)
48.25 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.74 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
2.85 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Gary, Indiana
Gary, Indiana
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Gary, Indiana air quality map: Real-time AQI near you
Air quality in nearby cities
Lake Station, Indiana
AQI 49
Good
8.52μg/m³
PM2.5
37.87μg/m³
PM10
48.50ppb
O3
0.70ppb
SO2
3.11ppb
NO2
0.24ppm
CO
Hobart, Indiana
AQI 49
Good
8.64μg/m³
PM2.5
38.44μg/m³
PM10
48.67ppb
O3
0.69ppb
SO2
3.33ppb
NO2
0.24ppm
CO
East Chicago, Indiana
AQI 52
Moderate
10.26μg/m³
PM2.5
42.88μg/m³
PM10
49.25ppb
O3
0.74ppb
SO2
4.54ppb
NO2
0.23ppm
CO
Griffith, Indiana
AQI 52
Moderate
10.13μg/m³
PM2.5
43.70μg/m³
PM10
49.10ppb
O3
0.74ppb
SO2
4.07ppb
NO2
0.23ppm
CO
Highland Town, Indiana
AQI 52
Moderate
10.41μg/m³
PM2.5
44.86μg/m³
PM10
49.20ppb
O3
0.74ppb
SO2
4.15ppb
NO2
0.23ppm
CO
Merrillville, Indiana
AQI 52
Moderate
9.75μg/m³
PM2.5
45.27μg/m³
PM10
49.39ppb
O3
0.74ppb
SO2
4.04ppb
NO2
0.23ppm
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 Gary, Indiana updated?
Air quality data for Gary, Indiana is updated on an hourly basis.
When did Gary, Indiana experience the worst air quality in the last 24 hours?
The worst air quality in Gary, Indiana was recorded at 12:00:00 on 2026-04-23.
When did Gary, Indiana have its best air quality in the last 24 hours?
The best air quality in Gary, Indiana was recorded at 08:00:00 on 2026-04-23.
What is the real-time air quality index for Gary, Indiana?
The real-time air quality index in Gary, Indiana is 44, currently categorized as Good.
Which pollutant is found most often in Gary, Indiana?
The most common pollutant in Gary, Indiana is O3.
What can I do if the air quality in Gary, Indiana is poor?
If the air quality in Gary, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Gary, Indiana?
The measured PM2.5 levels in Gary, Indiana at present are 8.339 μg/m3.
What are the current PM10 levels at Gary, Indiana?
The current PM10 levels in Gary, Indiana are 36.743 μg/m3.
What are the current carbon monoxide (CO) levels at Gary, Indiana?
The current carbon monoxide (CO) level in Gary, Indiana is 0.234 ppm.
What are the current sulfur dioxide (SO2) levels at Gary, Indiana?
The current sulfur dioxide (SO2) levels in Gary, Indiana are 0.741 ppb.
What are the current ozone (O3) levels at Gary, Indiana?
The current ozone (O3) levels at Gary, Indiana is 48.249 ppm.
What are the current nitrogen dioxide (NO2) levels at Gary, Indiana?
The current nitrogen dioxide (NO2) levels at Gary, Indiana is 2.851 ppb.
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