Hourly Weather | Today Monday, September 21, 2026
Hamilton, Ohio
1 PM
Rainy Weather
68°
Feels Like 64°
80
Humidity: 84%
UV Index: 1
Wind: 7 mph
2 PM
Cloudy Weather
70°
Feels Like 72°
49
Humidity: 83%
UV Index: 1
Wind: 7 mph
3 PM
Rainy Weather
70°
Feels Like 64°
61
Humidity: 83%
UV Index: 1
Wind: 7 mph
4 PM
Cloudy Weather
68°
Feels Like 68°
49
Humidity: 84%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
66°
Feels Like 66°
49
Humidity: 84%
UV Index: 1
Wind: 7 mph
6 PM
Rainy Weather
66°
Feels Like 61°
74
Humidity: 84%
UV Index: 0
Wind: 7 mph
7 PM
Rainy Weather
64°
Feels Like 59°
74
Humidity: 86%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
63°
Feels Like 63°
40
Humidity: 91%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
63°
Feels Like 61°
34
Humidity: 94%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
61°
Feels Like 61°
37
Humidity: 92%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
61°
Feels Like 61°
43
Humidity: 92%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 PM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.85 µg/m³
  • PM10: 10.01 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.6 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9 µg/m³
  • PM10: 10.14 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.11 µg/m³
  • PM10: 10.1 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.16 µg/m³
  • PM10: 9.99 µg/m³
  • O3: 0.026 ppm
  • NO2: 4 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.18 µg/m³
  • PM10: 9.84 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.3 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.08 µg/m³
  • PM10: 9.62 µg/m³
  • O3: 0.029 ppm
  • NO2: 4.2 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
36 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.69 µg/m³
  • PM10: 9.19 µg/m³
  • O3: 0.028 ppm
  • NO2: 4.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.98 µg/m³
  • PM10: 8.44 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.6 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.93 µg/m³
  • PM10: 7.35 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.6 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.1 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.6 ppb
  • SO2: 1 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.44 µg/m³
  • PM10: 5.96 µg/m³
  • O3: 0.021 ppm
  • NO2: 4.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.