Stay updated with real-time air quality in Circleville, 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)
40
Good
Circleville, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.08 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.47 μg/m³
0
55
155
255
425
605+
42.67 ppb
0
55
71
86
201
201+
2.76 ppb
0
36
76
186
605
1005+
6.59 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Circleville, Ohio
Circleville, Ohio
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AQI 40
Good
4.57μg/m³
PM2.5
22.07μg/m³
PM10
42.79ppb
O3
2.40ppb
SO2
6.71ppb
NO2
0.13ppm
CO
AQI 43
Good
4.82μg/m³
PM2.5
24.54μg/m³
PM10
46.05ppb
O3
2.71ppb
SO2
6.74ppb
NO2
0.13ppm
CO
AQI 46
Good
6.16μg/m³
PM2.5
19.05μg/m³
PM10
49.95ppb
O3
3.15ppb
SO2
4.25ppb
NO2
0.11ppm
CO
AQI 41
Good
5.15μg/m³
PM2.5
19.04μg/m³
PM10
44.07ppb
O3
2.89ppb
SO2
5.46ppb
NO2
0.12ppm
CO
AQI 45
Good
5.45μg/m³
PM2.5
16.44μg/m³
PM10
49.00ppb
O3
3.18ppb
SO2
4.06ppb
NO2
0.11ppm
CO
AQI 45
Good
5.50μg/m³
PM2.5
17.01μg/m³
PM10
48.69ppb
O3
3.13ppb
SO2
4.34ppb
NO2
0.11ppm
CO
Air quality and pollutant data for Ohio, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Circleville, Ohio is updated every hour for accuracy.
In the past 24 hours, the air quality in Circleville, Ohio was at its worst at 08:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Circleville, Ohio was observed at 11:00:00 on 2026-07-23.
As of now, the AQI in Circleville, Ohio is 40, indicating Good conditions.
Circleville, Ohio air has the highest levels of O3.
Poor air quality in Circleville, Ohio means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Circleville, Ohio are currently 5.083 μg/m3.
The PM10 concentration in Circleville, Ohio is 18.468 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Circleville, Ohio is 0.124 ppm.
Currently, Circleville, Ohio has a sulfur dioxide (SO2) concentration of 2.764 ppb.
The current ozone (O3) level in Circleville, Ohio at the moment is 42.666 ppm.
Nitrogen dioxide (NO2) level in Circleville, Ohio at the moment is 6.589 ppb.
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