Stay updated with real-time air quality in Dayton, 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)
56
Moderate
Dayton, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.03 μg/m³
0
55
155
255
425
605+
41.32 ppb
0
55
71
86
201
201+
4.45 ppb
0
36
76
186
605
1005+
6.15 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Dayton, Ohio
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AQI 56
Moderate
11.86μg/m³
PM2.5
25.48μg/m³
PM10
40.35ppb
O3
4.44ppb
SO2
6.21ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.96μg/m³
PM2.5
27.04μg/m³
PM10
39.63ppb
O3
4.43ppb
SO2
6.24ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.24μg/m³
PM2.5
28.00μg/m³
PM10
39.80ppb
O3
4.47ppb
SO2
6.18ppb
NO2
0.18ppm
CO
AQI 58
Moderate
12.95μg/m³
PM2.5
34.79μg/m³
PM10
40.09ppb
O3
4.65ppb
SO2
5.88ppb
NO2
0.18ppm
CO
AQI 56
Moderate
12.32μg/m³
PM2.5
35.07μg/m³
PM10
36.44ppb
O3
4.35ppb
SO2
6.55ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.35μg/m³
PM2.5
43.07μg/m³
PM10
37.53ppb
O3
4.44ppb
SO2
6.03ppb
NO2
0.19ppm
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 Dayton, Ohio is updated every hour.
The worst air quality in Dayton, Ohio in the last 24 hours was observed at 03:00:00 on 2026-08-10.
In the last 24 hrs, the best air quality in Dayton, Ohio was observed at 05:00:00 on 2026-08-10.
The current air quality in Dayton, Ohio is 56, categorized as Moderate based on real-time data.
The most common pollutant in Dayton, Ohio is PM2.5.
If the air quality in Dayton, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Dayton, Ohio is 11.703 μg/m3.
The current PM10 concentration at Dayton, Ohio is 23.032 μg/m3.
The current carbon monoxide (CO) concentration at Dayton, Ohio is 0.186 ppm.
The current sulfur dioxide (SO2) concentration at Dayton, Ohio is 4.449 ppb.
The current ozone (O3) concentration at Dayton, Ohio is 41.323 ppm.
The current nitrogen dioxide (NO2) concentration at Dayton, Ohio is 6.146 ppb.
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