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)
43
Good
Franklin, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.56 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.44 μg/m³
0
55
155
255
425
605+
45.74 ppb
0
55
71
86
201
201+
1.02 ppb
0
36
76
186
605
1005+
2.65 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Franklin, Indiana
Franklin, Indiana
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AQI 40
Good
3.62μg/m³
PM2.5
17.88μg/m³
PM10
43.42ppb
O3
0.51ppb
SO2
2.64ppb
NO2
0.18ppm
CO
AQI 40
Good
3.83μg/m³
PM2.5
15.66μg/m³
PM10
43.39ppb
O3
0.90ppb
SO2
2.40ppb
NO2
0.19ppm
CO
AQI 44
Good
3.54μg/m³
PM2.5
13.53μg/m³
PM10
46.76ppb
O3
1.26ppb
SO2
2.85ppb
NO2
0.18ppm
CO
AQI 41
Good
3.67μg/m³
PM2.5
16.52μg/m³
PM10
43.62ppb
O3
0.50ppb
SO2
1.68ppb
NO2
0.20ppm
CO
AQI 44
Good
4.15μg/m³
PM2.5
17.61μg/m³
PM10
47.82ppb
O3
0.54ppb
SO2
2.97ppb
NO2
0.18ppm
CO
AQI 46
Good
3.74μg/m³
PM2.5
14.86μg/m³
PM10
50.43ppb
O3
0.55ppb
SO2
3.23ppb
NO2
0.17ppm
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 02:00:00 on 2026-06-13.
In the last 24 hours, the best air quality in Franklin, Indiana was observed at 12:00:00 on 2026-06-13.
As of now, the AQI in Franklin, Indiana is 43, indicating Good conditions.
Franklin, Indiana air has the highest levels of O3.
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 3.559 μg/m3.
The PM10 concentration in Franklin, Indiana is 15.435 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Franklin, Indiana is 0.183 ppm.
Currently, Franklin, Indiana has a sulfur dioxide (SO2) concentration of 1.016 ppb.
The current ozone (O3) level in Franklin, Indiana at the moment is 45.742 ppm.
Nitrogen dioxide (NO2) level in Franklin, Indiana at the moment is 2.646 ppb.
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