Stay updated with real-time air quality in Franklin, Ohio 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)
44
Good
Franklin, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.73 μg/m³
0
55
155
255
425
605+
36.81 ppb
0
55
71
86
201
201+
1.43 ppb
0
36
76
186
605
1005+
5.26 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Franklin, Ohio
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AQI 44
Good
8.04μg/m³
PM2.5
31.16μg/m³
PM10
35.88ppb
O3
1.34ppb
SO2
5.55ppb
NO2
0.14ppm
CO
AQI 44
Good
7.97μg/m³
PM2.5
27.88μg/m³
PM10
35.88ppb
O3
1.35ppb
SO2
5.54ppb
NO2
0.14ppm
CO
AQI 44
Good
8.18μg/m³
PM2.5
37.26μg/m³
PM10
36.91ppb
O3
1.44ppb
SO2
5.27ppb
NO2
0.14ppm
CO
AQI 44
Good
7.79μg/m³
PM2.5
23.28μg/m³
PM10
36.36ppb
O3
1.33ppb
SO2
5.58ppb
NO2
0.14ppm
CO
AQI 44
Good
8.36μg/m³
PM2.5
30.89μg/m³
PM10
36.56ppb
O3
1.31ppb
SO2
5.23ppb
NO2
0.14ppm
CO
AQI 38
Good
7.39μg/m³
PM2.5
28.26μg/m³
PM10
37.77ppb
O3
1.34ppb
SO2
5.77ppb
NO2
0.14ppm
CO
Air quality data and pollutant measurements for Ohio, 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 Franklin, Ohio is updated every hour.
The worst air quality in Franklin, Ohio in the last 24 hours was observed at 09:00:00 on 2026-03-10.
In the last 24 hrs, the best air quality in Franklin, Ohio was observed at 12:00:00 on 2026-03-10.
The current air quality in Franklin, Ohio is 44, categorized as Good based on real-time data.
The most common pollutant in Franklin, Ohio is PM2.5.
If the air quality in Franklin, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Franklin, Ohio is 8.408 μg/m3.
The current PM10 concentration at Franklin, Ohio is 32.728 μg/m3.
The current carbon monoxide (CO) concentration at Franklin, Ohio is 0.137 ppm.
The current sulfur dioxide (SO2) concentration at Franklin, Ohio is 1.427 ppb.
The current ozone (O3) concentration at Franklin, Ohio is 36.812 ppm.
The current nitrogen dioxide (NO2) concentration at Franklin, Ohio is 5.263 ppb.
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