Stay updated with real-time air quality in Bellefontaine, 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)
82
Moderate
Bellefontaine, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
25.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
86.09 μg/m³
0
55
155
255
425
605+
27.42 ppb
0
55
71
86
201
201+
1.07 ppb
0
36
76
186
605
1005+
8.05 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Bellefontaine, Ohio
Bellefontaine, Ohio
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AQI 82
Moderate
25.60μg/m³
PM2.5
101.13μg/m³
PM10
35.70ppb
O3
1.07ppb
SO2
11.40ppb
NO2
0.30ppm
CO
AQI 77
Moderate
22.84μg/m³
PM2.5
68.28μg/m³
PM10
36.79ppb
O3
1.09ppb
SO2
5.85ppb
NO2
0.28ppm
CO
AQI 82
Moderate
25.74μg/m³
PM2.5
78.09μg/m³
PM10
34.62ppb
O3
1.07ppb
SO2
10.33ppb
NO2
0.32ppm
CO
AQI 77
Moderate
22.87μg/m³
PM2.5
68.34μg/m³
PM10
37.95ppb
O3
0.99ppb
SO2
7.09ppb
NO2
0.27ppm
CO
AQI 81
Moderate
25.10μg/m³
PM2.5
108.96μg/m³
PM10
29.95ppb
O3
1.07ppb
SO2
11.44ppb
NO2
0.29ppm
CO
AQI 75
Moderate
22.07μg/m³
PM2.5
96.47μg/m³
PM10
36.98ppb
O3
1.09ppb
SO2
10.43ppb
NO2
0.33ppm
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 Bellefontaine, Ohio is updated every hour.
The worst air quality in Bellefontaine, Ohio in the last 24 hours was observed at 07:00:00 on 2025-06-05.
In the last 24 hrs, the best air quality in Bellefontaine, Ohio was observed at 01:00:00 on 2025-06-04.
The current air quality in Bellefontaine, Ohio is 82, categorized as Moderate based on real-time data.
The most common pollutant in Bellefontaine, Ohio is PM2.5.
If the air quality in Bellefontaine, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Bellefontaine, Ohio is 25.956 μg/m3.
The current PM10 concentration at Bellefontaine, Ohio is 86.092 μg/m3.
The current carbon monoxide (CO) concentration at Bellefontaine, Ohio is 0.278 ppm.
The current sulfur dioxide (SO2) concentration at Bellefontaine, Ohio is 1.071 ppb.
The current ozone (O3) concentration at Bellefontaine, Ohio is 27.418 ppm.
The current nitrogen dioxide (NO2) concentration at Bellefontaine, Ohio is 8.054 ppb.
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