Stay updated with real-time air quality in Hamilton, 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)
21
Good
Hamilton, Ohio
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.74 μg/m³
0
55
155
255
425
605+
22.54 ppb
0
55
71
86
201
201+
1.46 ppb
0
36
76
186
605
1005+
5.33 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hamilton, Ohio
Hamilton, Ohio
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AQI 20
Good
3.37μg/m³
PM2.5
15.03μg/m³
PM10
22.29ppb
O3
1.39ppb
SO2
5.49ppb
NO2
0.21ppm
CO
AQI 21
Good
3.21μg/m³
PM2.5
13.43μg/m³
PM10
22.68ppb
O3
1.94ppb
SO2
5.07ppb
NO2
0.20ppm
CO
AQI 20
Good
3.29μg/m³
PM2.5
15.07μg/m³
PM10
22.32ppb
O3
1.35ppb
SO2
5.71ppb
NO2
0.22ppm
CO
AQI 21
Good
2.83μg/m³
PM2.5
12.08μg/m³
PM10
22.58ppb
O3
1.32ppb
SO2
5.83ppb
NO2
0.23ppm
CO
AQI 22
Good
3.92μg/m³
PM2.5
15.35μg/m³
PM10
22.79ppb
O3
1.28ppb
SO2
5.89ppb
NO2
0.25ppm
CO
AQI 21
Good
3.21μg/m³
PM2.5
12.31μg/m³
PM10
22.69ppb
O3
1.93ppb
SO2
5.07ppb
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 Hamilton, Ohio is updated every hour.
The worst air quality in Hamilton, Ohio in the last 24 hours was observed at 10:00:00 on 2025-12-10.
In the last 24 hrs, the best air quality in Hamilton, Ohio was observed at 12:00:00 on 2025-12-11.
The current air quality in Hamilton, Ohio is 21, categorized as Good based on real-time data.
The most common pollutant in Hamilton, Ohio is O3.
If the air quality in Hamilton, Ohio is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Hamilton, Ohio is 3.417 μg/m3.
The current PM10 concentration at Hamilton, Ohio is 16.742 μg/m3.
The current carbon monoxide (CO) concentration at Hamilton, Ohio is 0.209 ppm.
The current sulfur dioxide (SO2) concentration at Hamilton, Ohio is 1.458 ppb.
The current ozone (O3) concentration at Hamilton, Ohio is 22.541 ppm.
The current nitrogen dioxide (NO2) concentration at Hamilton, Ohio is 5.332 ppb.
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