Stay updated with real-time air quality in Frankfort, 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)
37
Good
Frankfort, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.46 μg/m³
0
55
155
255
425
605+
40.39 ppb
0
55
71
86
201
201+
1.20 ppb
0
36
76
186
605
1005+
5.96 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Frankfort, Indiana
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AQI 40
Good
5.00μg/m³
PM2.5
18.77μg/m³
PM10
43.40ppb
O3
0.44ppb
SO2
5.42ppb
NO2
0.15ppm
CO
AQI 56
Moderate
11.66μg/m³
PM2.5
51.38μg/m³
PM10
40.80ppb
O3
1.26ppb
SO2
5.95ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.46μg/m³
PM2.5
50.49μg/m³
PM10
40.82ppb
O3
1.26ppb
SO2
5.94ppb
NO2
0.14ppm
CO
AQI 40
Good
5.06μg/m³
PM2.5
19.46μg/m³
PM10
43.21ppb
O3
0.46ppb
SO2
5.37ppb
NO2
0.15ppm
CO
AQI 38
Good
1.60μg/m³
PM2.5
6.43μg/m³
PM10
41.02ppb
O3
2.74ppb
SO2
5.61ppb
NO2
0.15ppm
CO
AQI 38
Good
7.38μg/m³
PM2.5
20.88μg/m³
PM10
39.77ppb
O3
1.19ppb
SO2
5.97ppb
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 Frankfort, Indiana is updated every hour.
The worst air quality in Frankfort, Indiana in the last 24 hours was observed at 05:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Frankfort, Indiana was observed at 03:00:00 on 2026-07-23.
The current air quality in Frankfort, Indiana is 37, categorized as Good based on real-time data.
The most common pollutant in Frankfort, Indiana is O3.
If the air quality in Frankfort, Indiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Frankfort, Indiana is 4.921 μg/m3.
The current PM10 concentration at Frankfort, Indiana is 23.464 μg/m3.
The current carbon monoxide (CO) concentration at Frankfort, Indiana is 0.152 ppm.
The current sulfur dioxide (SO2) concentration at Frankfort, Indiana is 1.201 ppb.
The current ozone (O3) concentration at Frankfort, Indiana is 40.389 ppm.
The current nitrogen dioxide (NO2) concentration at Frankfort, Indiana is 5.958 ppb.
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