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)
66
Moderate
Chesterton, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
17.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
71.91 μg/m³
0
55
155
255
425
605+
30.53 ppb
0
55
71
86
201
201+
2.03 ppb
0
36
76
186
605
1005+
19.86 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Chesterton, Indiana
Chesterton, Indiana
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AQI 58
Moderate
13.26μg/m³
PM2.5
59.05μg/m³
PM10
22.64ppb
O3
1.51ppb
SO2
29.77ppb
NO2
0.25ppm
CO
AQI 64
Moderate
16.15μg/m³
PM2.5
72.43μg/m³
PM10
20.57ppb
O3
1.35ppb
SO2
30.61ppb
NO2
0.25ppm
CO
AQI 67
Moderate
17.72μg/m³
PM2.5
83.92μg/m³
PM10
32.55ppb
O3
1.64ppb
SO2
20.67ppb
NO2
0.25ppm
CO
AQI 64
Moderate
15.68μg/m³
PM2.5
66.16μg/m³
PM10
33.63ppb
O3
1.86ppb
SO2
10.06ppb
NO2
0.26ppm
CO
AQI 64
Moderate
15.82μg/m³
PM2.5
70.99μg/m³
PM10
21.91ppb
O3
1.45ppb
SO2
29.77ppb
NO2
0.25ppm
CO
AQI 66
Moderate
16.64μg/m³
PM2.5
74.71μg/m³
PM10
19.21ppb
O3
1.36ppb
SO2
31.01ppb
NO2
0.24ppm
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 03:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Chesterton, Indiana was observed at 08:00:00 on 2026-10-21.
The current air quality in Chesterton, Indiana is 66, categorized as Moderate based on real-time data.
The most common pollutant in Chesterton, Indiana is PM2.5.
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 17.432 μg/m3.
The current PM10 concentration at Chesterton, Indiana is 71.906 μg/m3.
The current carbon monoxide (CO) concentration at Chesterton, Indiana is 0.206 ppm.
The current sulfur dioxide (SO2) concentration at Chesterton, Indiana is 2.028 ppb.
The current ozone (O3) concentration at Chesterton, Indiana is 30.53 ppm.
The current nitrogen dioxide (NO2) concentration at Chesterton, Indiana is 19.86 ppb.
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