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)
46
Good
Chesterton, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.01 μg/m³
0
55
155
255
425
605+
49.61 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
3.45 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Chesterton, Indiana
Chesterton, Indiana
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AQI 45
Good
8.44μg/m³
PM2.5
37.62μg/m³
PM10
48.96ppb
O3
0.64ppb
SO2
3.65ppb
NO2
0.24ppm
CO
AQI 49
Good
8.52μg/m³
PM2.5
37.87μg/m³
PM10
48.50ppb
O3
0.70ppb
SO2
3.11ppb
NO2
0.24ppm
CO
AQI 49
Good
8.72μg/m³
PM2.5
37.86μg/m³
PM10
49.62ppb
O3
0.72ppb
SO2
2.04ppb
NO2
0.25ppm
CO
AQI 52
Moderate
9.56μg/m³
PM2.5
42.08μg/m³
PM10
51.57ppb
O3
0.59ppb
SO2
2.36ppb
NO2
0.25ppm
CO
AQI 49
Good
8.64μg/m³
PM2.5
38.44μg/m³
PM10
48.67ppb
O3
0.69ppb
SO2
3.33ppb
NO2
0.24ppm
CO
AQI 44
Good
8.34μg/m³
PM2.5
36.74μg/m³
PM10
48.25ppb
O3
0.74ppb
SO2
2.85ppb
NO2
0.23ppm
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 2026-04-23.
In the last 24 hrs, the best air quality in Chesterton, Indiana was observed at 05:00:00 on 2026-04-23.
The current air quality in Chesterton, Indiana is 46, 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 8.363 μg/m3.
The current PM10 concentration at Chesterton, Indiana is 37.005 μg/m3.
The current carbon monoxide (CO) concentration at Chesterton, Indiana is 0.241 ppm.
The current sulfur dioxide (SO2) concentration at Chesterton, Indiana is 0.629 ppb.
The current ozone (O3) concentration at Chesterton, Indiana is 49.611 ppm.
The current nitrogen dioxide (NO2) concentration at Chesterton, Indiana is 3.446 ppb.
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