Stay updated with real-time air quality in Greenville, 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)
44
Good
Greenville, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.60 μg/m³
0
55
155
255
425
605+
29.42 ppb
0
55
71
86
201
201+
1.10 ppb
0
36
76
186
605
1005+
7.97 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Greenville, Ohio
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AQI 52
Moderate
9.53μg/m³
PM2.5
26.43μg/m³
PM10
32.35ppb
O3
1.14ppb
SO2
7.42ppb
NO2
0.20ppm
CO
AQI 49
Good
9.39μg/m³
PM2.5
23.82μg/m³
PM10
27.02ppb
O3
1.12ppb
SO2
7.93ppb
NO2
0.20ppm
CO
AQI 49
Good
8.87μg/m³
PM2.5
21.21μg/m³
PM10
32.37ppb
O3
1.13ppb
SO2
7.19ppb
NO2
0.20ppm
CO
AQI 44
Good
8.06μg/m³
PM2.5
31.90μg/m³
PM10
34.68ppb
O3
1.11ppb
SO2
8.75ppb
NO2
0.17ppm
CO
AQI 52
Moderate
9.57μg/m³
PM2.5
23.89μg/m³
PM10
28.03ppb
O3
1.12ppb
SO2
7.89ppb
NO2
0.20ppm
CO
AQI 52
Moderate
9.69μg/m³
PM2.5
25.41μg/m³
PM10
24.15ppb
O3
1.11ppb
SO2
7.48ppb
NO2
0.20ppm
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 Greenville, Ohio is updated every hour.
The worst air quality in Greenville, Ohio in the last 24 hours was observed at 01:00:00 on 2026-06-07.
In the last 24 hrs, the best air quality in Greenville, Ohio was observed at 02:00:00 on 2026-06-08.
The current air quality in Greenville, Ohio is 44, categorized as Good based on real-time data.
The most common pollutant in Greenville, Ohio is PM2.5.
If the air quality in Greenville, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Greenville, Ohio is 7.925 μg/m3.
The current PM10 concentration at Greenville, Ohio is 30.597 μg/m3.
The current carbon monoxide (CO) concentration at Greenville, Ohio is 0.181 ppm.
The current sulfur dioxide (SO2) concentration at Greenville, Ohio is 1.1 ppb.
The current ozone (O3) concentration at Greenville, Ohio is 29.417 ppm.
The current nitrogen dioxide (NO2) concentration at Greenville, Ohio is 7.966 ppb.
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