Stay updated with real-time air quality in Fairfield, 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)
33
Good
Fairfield, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.33 μg/m³
0
55
155
255
425
605+
24.01 ppb
0
55
71
86
201
201+
1.42 ppb
0
36
76
186
605
1005+
24.58 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fairfield, Ohio
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AQI 33
Good
5.66μg/m³
PM2.5
21.30μg/m³
PM10
26.07ppb
O3
1.37ppb
SO2
22.68ppb
NO2
0.27ppm
CO
AQI 33
Good
5.67μg/m³
PM2.5
21.40μg/m³
PM10
22.08ppb
O3
1.47ppb
SO2
23.13ppb
NO2
0.28ppm
CO
AQI 27
Good
4.79μg/m³
PM2.5
16.69μg/m³
PM10
22.27ppb
O3
1.48ppb
SO2
19.67ppb
NO2
0.28ppm
CO
AQI 27
Good
5.44μg/m³
PM2.5
23.14μg/m³
PM10
24.53ppb
O3
1.49ppb
SO2
25.17ppb
NO2
0.32ppm
CO
AQI 27
Good
4.70μg/m³
PM2.5
18.69μg/m³
PM10
24.60ppb
O3
1.50ppb
SO2
25.67ppb
NO2
0.33ppm
CO
AQI 27
Good
5.10μg/m³
PM2.5
21.51μg/m³
PM10
24.79ppb
O3
1.50ppb
SO2
26.16ppb
NO2
0.33ppm
CO
Air quality measurements for Ohio, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Fairfield, Ohio is updated on an hourly basis.
The worst air quality in Fairfield, Ohio was recorded at 10:00:00 on 2026-01-22.
The best air quality in Fairfield, Ohio was recorded at 12:00:00 on 2026-01-23.
The real-time air quality index in Fairfield, Ohio is 33, currently categorized as Good.
The most common pollutant in Fairfield, Ohio is PM2.5.
If the air quality in Fairfield, Ohio is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Fairfield, Ohio at present are 6.012 μg/m3.
The current PM10 levels in Fairfield, Ohio are 21.33 μg/m3.
The current carbon monoxide (CO) level in Fairfield, Ohio is 0.273 ppm.
The current sulfur dioxide (SO2) levels in Fairfield, Ohio are 1.416 ppb.
The current ozone (O3) levels at Fairfield, Ohio is 24.006 ppm.
The current nitrogen dioxide (NO2) levels at Fairfield, Ohio is 24.58 ppb.
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