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)
31
Good
Bellefontaine, Ohio
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.99 μg/m³
0
55
155
255
425
605+
33.85 ppb
0
55
71
86
201
201+
1.82 ppb
0
36
76
186
605
1005+
5.23 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Bellefontaine, Ohio
Bellefontaine, Ohio
Scroll To Air Quality MapLoading...
AQI 30
Good
3.32μg/m³
PM2.5
13.67μg/m³
PM10
31.85ppb
O3
2.01ppb
SO2
3.95ppb
NO2
0.13ppm
CO
AQI 30
Good
3.32μg/m³
PM2.5
14.62μg/m³
PM10
32.45ppb
O3
1.83ppb
SO2
3.91ppb
NO2
0.15ppm
CO
AQI 31
Good
3.49μg/m³
PM2.5
13.38μg/m³
PM10
33.49ppb
O3
1.76ppb
SO2
4.79ppb
NO2
0.11ppm
CO
AQI 31
Good
3.43μg/m³
PM2.5
14.74μg/m³
PM10
32.59ppb
O3
2.00ppb
SO2
3.50ppb
NO2
0.15ppm
CO
AQI 30
Good
3.20μg/m³
PM2.5
14.00μg/m³
PM10
31.99ppb
O3
2.02ppb
SO2
3.78ppb
NO2
0.15ppm
CO
AQI 28
Good
3.69μg/m³
PM2.5
15.97μg/m³
PM10
30.01ppb
O3
1.01ppb
SO2
4.00ppb
NO2
0.12ppm
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 10:00:00 on 2025-10-20.
In the last 24 hrs, the best air quality in Bellefontaine, Ohio was observed at 08:00:00 on 2025-10-21.
The current air quality in Bellefontaine, Ohio is 31, categorized as Good based on real-time data.
The most common pollutant in Bellefontaine, Ohio is O3.
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 3.399 μg/m3.
The current PM10 concentration at Bellefontaine, Ohio is 13.987 μg/m3.
The current carbon monoxide (CO) concentration at Bellefontaine, Ohio is 0.127 ppm.
The current sulfur dioxide (SO2) concentration at Bellefontaine, Ohio is 1.817 ppb.
The current ozone (O3) concentration at Bellefontaine, Ohio is 33.85 ppm.
The current nitrogen dioxide (NO2) concentration at Bellefontaine, Ohio is 5.228 ppb.
All Rights Reserved © Ambee Inc. 2025