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)
60
Moderate
Franklin, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
49.31 μg/m³
0
55
155
255
425
605+
38.79 ppb
0
55
71
86
201
201+
4.90 ppb
0
36
76
186
605
1005+
5.57 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Franklin, Ohio
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AQI 56
Moderate
12.46μg/m³
PM2.5
42.27μg/m³
PM10
24.47ppb
O3
2.70ppb
SO2
7.83ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.47μg/m³
PM2.5
42.46μg/m³
PM10
28.59ppb
O3
2.71ppb
SO2
7.82ppb
NO2
0.19ppm
CO
AQI 58
Moderate
12.85μg/m³
PM2.5
48.21μg/m³
PM10
27.94ppb
O3
2.92ppb
SO2
7.64ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.74μg/m³
PM2.5
32.70μg/m³
PM10
26.49ppb
O3
2.75ppb
SO2
7.75ppb
NO2
0.19ppm
CO
AQI 58
Moderate
12.85μg/m³
PM2.5
49.88μg/m³
PM10
25.83ppb
O3
2.95ppb
SO2
7.58ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.25μg/m³
PM2.5
38.84μg/m³
PM10
26.24ppb
O3
2.91ppb
SO2
7.87ppb
NO2
0.18ppm
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 03:00:00 on 2026-08-10.
In the last 24 hrs, the best air quality in Franklin, Ohio was observed at 01:00:00 on 2026-08-10.
The current air quality in Franklin, Ohio is 58, 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 13.274 μg/m3.
The current PM10 concentration at Franklin, Ohio is 47.308 μg/m3.
The current carbon monoxide (CO) concentration at Franklin, Ohio is 0.191 ppm.
The current sulfur dioxide (SO2) concentration at Franklin, Ohio is 2.876 ppb.
The current ozone (O3) concentration at Franklin, Ohio is 29.444 ppm.
The current nitrogen dioxide (NO2) concentration at Franklin, Ohio is 7.366 ppb.
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