Hourly Weather | Today Wednesday, May 20, 2026
Fort Smith, Arkansas
7 PM
Cloudy Weather
79°
Feels Like 79°
7
Humidity: 67%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
75°
Feels Like 75°
7
Humidity: 74%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
73°
Feels Like 73°
7
Humidity: 82%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
72°
Feels Like 72°
7
Humidity: 85%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Weather
72°
Feels Like 72°
7
Humidity: 86%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

7 PM
17 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 3.13 µg/m³
  • O3: 0.018 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

8 PM
15 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.18 µg/m³
  • PM10: 2.98 µg/m³
  • O3: 0.016 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 PM
12 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.89 µg/m³
  • O3: 0.013 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 PM
10 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.91 µg/m³
  • PM10: 2.8 µg/m³
  • O3: 0.011 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

11 PM
9 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 2.53 µg/m³
  • O3: 0.009 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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