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)
56
Moderate
Franklin, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.74 μg/m³
0
55
155
255
425
605+
32.31 ppb
0
55
71
86
201
201+
1.03 ppb
0
36
76
186
605
1005+
8.50 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Franklin, Ohio
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AQI 52
Moderate
9.88μg/m³
PM2.5
25.61μg/m³
PM10
30.09ppb
O3
1.11ppb
SO2
7.53ppb
NO2
0.22ppm
CO
AQI 52
Moderate
9.80μg/m³
PM2.5
14.46μg/m³
PM10
30.23ppb
O3
1.10ppb
SO2
7.73ppb
NO2
0.22ppm
CO
AQI 56
Moderate
11.64μg/m³
PM2.5
35.96μg/m³
PM10
31.54ppb
O3
1.03ppb
SO2
8.35ppb
NO2
0.23ppm
CO
AQI 49
Good
9.35μg/m³
PM2.5
20.50μg/m³
PM10
34.27ppb
O3
1.08ppb
SO2
7.10ppb
NO2
0.22ppm
CO
AQI 58
Moderate
12.62μg/m³
PM2.5
50.67μg/m³
PM10
32.93ppb
O3
1.03ppb
SO2
8.79ppb
NO2
0.23ppm
CO
AQI 49
Good
8.93μg/m³
PM2.5
14.19μg/m³
PM10
30.07ppb
O3
1.11ppb
SO2
6.13ppb
NO2
0.22ppm
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 10:00:00 on 2026-06-07.
In the last 24 hrs, the best air quality in Franklin, Ohio was observed at 04:00:00 on 2026-06-08.
The current air quality in Franklin, Ohio is 56, categorized as Moderate 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 12.215 μg/m3.
The current PM10 concentration at Franklin, Ohio is 38.738 μg/m3.
The current carbon monoxide (CO) concentration at Franklin, Ohio is 0.231 ppm.
The current sulfur dioxide (SO2) concentration at Franklin, Ohio is 1.031 ppb.
The current ozone (O3) concentration at Franklin, Ohio is 32.315 ppm.
The current nitrogen dioxide (NO2) concentration at Franklin, Ohio is 8.502 ppb.
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