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)
38
Good
Chesterton, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.59 μg/m³
0
55
155
255
425
605+
40.78 ppb
0
55
71
86
201
201+
1.30 ppb
0
36
76
186
605
1005+
5.43 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 39
Good
6.63μg/m³
PM2.5
29.98μg/m³
PM10
41.54ppb
O3
1.22ppb
SO2
5.44ppb
NO2
0.14ppm
CO
AQI 36
Good
5.38μg/m³
PM2.5
24.80μg/m³
PM10
39.35ppb
O3
0.75ppb
SO2
5.43ppb
NO2
0.14ppm
CO
AQI 37
Good
6.19μg/m³
PM2.5
29.27μg/m³
PM10
40.21ppb
O3
1.28ppb
SO2
5.43ppb
NO2
0.14ppm
CO
AQI 36
Good
4.56μg/m³
PM2.5
19.91μg/m³
PM10
39.29ppb
O3
1.26ppb
SO2
5.40ppb
NO2
0.13ppm
CO
AQI 37
Good
5.75μg/m³
PM2.5
26.37μg/m³
PM10
40.11ppb
O3
0.90ppb
SO2
5.43ppb
NO2
0.14ppm
CO
AQI 35
Good
4.74μg/m³
PM2.5
21.90μg/m³
PM10
38.02ppb
O3
0.58ppb
SO2
5.43ppb
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 12:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Chesterton, Indiana was observed at 03:00:00 on 2026-07-23.
The current air quality in Chesterton, Indiana is 38, 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 6.268 μg/m3.
The current PM10 concentration at Chesterton, Indiana is 28.592 μg/m3.
The current carbon monoxide (CO) concentration at Chesterton, Indiana is 0.136 ppm.
The current sulfur dioxide (SO2) concentration at Chesterton, Indiana is 1.301 ppb.
The current ozone (O3) concentration at Chesterton, Indiana is 40.777 ppm.
The current nitrogen dioxide (NO2) concentration at Chesterton, Indiana is 5.429 ppb.
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