Stay updated with real-time air quality in Chesterton, 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)
33
Good
Chesterton, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.07 μg/m³
0
55
155
255
425
605+
36.16 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
2.61 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Chesterton, Indiana
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AQI 31
Good
2.77μg/m³
PM2.5
12.90μg/m³
PM10
33.96ppb
O3
0.60ppb
SO2
1.65ppb
NO2
0.20ppm
CO
AQI 31
Good
3.22μg/m³
PM2.5
14.09μg/m³
PM10
32.97ppb
O3
0.40ppb
SO2
1.30ppb
NO2
0.20ppm
CO
AQI 32
Good
3.54μg/m³
PM2.5
19.77μg/m³
PM10
35.35ppb
O3
0.68ppb
SO2
2.31ppb
NO2
0.19ppm
CO
AQI 31
Good
3.73μg/m³
PM2.5
17.12μg/m³
PM10
32.95ppb
O3
0.76ppb
SO2
2.99ppb
NO2
0.19ppm
CO
AQI 31
Good
3.15μg/m³
PM2.5
14.17μg/m³
PM10
33.36ppb
O3
0.51ppb
SO2
1.46ppb
NO2
0.20ppm
CO
AQI 30
Good
3.68μg/m³
PM2.5
15.55μg/m³
PM10
32.30ppb
O3
0.32ppb
SO2
1.12ppb
NO2
0.20ppm
CO
Air quality data and pollutant measurements for Indiana, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Chesterton, Indiana is updated every hour.
The worst air quality in Chesterton, Indiana in the last 24 hours was observed at 01:00:00 on 2026-03-09.
In the last 24 hrs, the best air quality in Chesterton, Indiana was observed at 03:00:00 on 2026-03-09.
The current air quality in Chesterton, Indiana is 33, categorized as Good based on real-time data.
The most common pollutant in Chesterton, Indiana is O3.
If the air quality in Chesterton, Indiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Chesterton, Indiana is 3.239 μg/m3.
The current PM10 concentration at Chesterton, Indiana is 16.067 μg/m3.
The current carbon monoxide (CO) concentration at Chesterton, Indiana is 0.194 ppm.
The current sulfur dioxide (SO2) concentration at Chesterton, Indiana is 0.629 ppb.
The current ozone (O3) concentration at Chesterton, Indiana is 36.157 ppm.
The current nitrogen dioxide (NO2) concentration at Chesterton, Indiana is 2.606 ppb.
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