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)
40
Good
Chesterton, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.88 μg/m³
0
55
155
255
425
605+
42.55 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
7.07 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Chesterton, Indiana
Chesterton, Indiana
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AQI 41
Good
1.93μg/m³
PM2.5
9.19μg/m³
PM10
43.58ppb
O3
0.29ppb
SO2
6.85ppb
NO2
0.14ppm
CO
AQI 39
Good
1.82μg/m³
PM2.5
7.96μg/m³
PM10
42.27ppb
O3
0.22ppb
SO2
6.87ppb
NO2
0.14ppm
CO
AQI 39
Good
2.35μg/m³
PM2.5
19.01μg/m³
PM10
41.52ppb
O3
0.33ppb
SO2
7.61ppb
NO2
0.14ppm
CO
AQI 39
Good
2.72μg/m³
PM2.5
15.99μg/m³
PM10
41.95ppb
O3
0.37ppb
SO2
6.50ppb
NO2
0.14ppm
CO
AQI 40
Good
1.91μg/m³
PM2.5
8.90μg/m³
PM10
42.61ppb
O3
0.26ppb
SO2
6.91ppb
NO2
0.14ppm
CO
AQI 39
Good
1.75μg/m³
PM2.5
7.20μg/m³
PM10
41.74ppb
O3
0.19ppb
SO2
6.93ppb
NO2
0.14ppm
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 08:00:00 on 2026-06-15.
In the last 24 hrs, the best air quality in Chesterton, Indiana was observed at 11:00:00 on 2026-06-15.
The current air quality in Chesterton, Indiana is 40, 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 2.152 μg/m3.
The current PM10 concentration at Chesterton, Indiana is 14.882 μg/m3.
The current carbon monoxide (CO) concentration at Chesterton, Indiana is 0.144 ppm.
The current sulfur dioxide (SO2) concentration at Chesterton, Indiana is 0.327 ppb.
The current ozone (O3) concentration at Chesterton, Indiana is 42.552 ppm.
The current nitrogen dioxide (NO2) concentration at Chesterton, Indiana is 7.066 ppb.
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