Stay updated with real-time air quality in Franklin, 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)
54
Moderate
Franklin, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.44 μg/m³
0
55
155
255
425
605+
45.64 ppb
0
55
71
86
201
201+
1.21 ppb
0
36
76
186
605
1005+
6.54 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Franklin, Indiana
Franklin, Indiana
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AQI 58
Moderate
13.05μg/m³
PM2.5
54.21μg/m³
PM10
38.82ppb
O3
1.31ppb
SO2
10.70ppb
NO2
0.21ppm
CO
AQI 58
Moderate
13.08μg/m³
PM2.5
46.86μg/m³
PM10
38.33ppb
O3
0.99ppb
SO2
10.43ppb
NO2
0.21ppm
CO
AQI 56
Moderate
11.92μg/m³
PM2.5
41.67μg/m³
PM10
38.60ppb
O3
1.20ppb
SO2
11.45ppb
NO2
0.21ppm
CO
AQI 60
Moderate
13.83μg/m³
PM2.5
45.15μg/m³
PM10
33.61ppb
O3
0.53ppb
SO2
8.92ppb
NO2
0.21ppm
CO
AQI 56
Moderate
11.95μg/m³
PM2.5
49.41μg/m³
PM10
37.72ppb
O3
1.57ppb
SO2
11.21ppb
NO2
0.21ppm
CO
AQI 54
Moderate
11.38μg/m³
PM2.5
48.71μg/m³
PM10
36.38ppb
O3
1.64ppb
SO2
11.74ppb
NO2
0.22ppm
CO
Air quality and pollutant data for Indiana, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Franklin, Indiana is updated every hour for accuracy.
In the past 24 hours, the air quality in Franklin, Indiana was at its worst at 03:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in Franklin, Indiana was observed at 10:00:00 on 2026-10-22.
As of now, the AQI in Franklin, Indiana is 58, indicating Moderate conditions.
Franklin, Indiana air has the highest levels of PM2.5.
Poor air quality in Franklin, Indiana means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Franklin, Indiana are currently 13.055 μg/m3.
The PM10 concentration in Franklin, Indiana is 54.249 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Franklin, Indiana is 0.21 ppm.
Currently, Franklin, Indiana has a sulfur dioxide (SO2) concentration of 1.292 ppb.
The current ozone (O3) level in Franklin, Indiana at the moment is 38.89 ppm.
Nitrogen dioxide (NO2) level in Franklin, Indiana at the moment is 10.79 ppb.
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