Hourly Weather | Today Monday, July 20, 2026
Active Weather Warnings
Clarksville, Tennessee
7 PM
Cloudy Weather
88°
Feels Like 99°
46
Humidity: 69%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Weather
88°
Feels Like 97°
20
Humidity: 71%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
84°
Feels Like 95°
20
Humidity: 78%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
82°
Feels Like 91°
20
Humidity: 84%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
79°
Feels Like 90°
20
Humidity: 90%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.91 µg/m³
  • PM10: 3.14 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.1 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
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.96 µg/m³
  • PM10: 3.21 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.5 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
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.01 µg/m³
  • PM10: 3.29 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 3.38 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.7 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
13 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Clarksville

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 11:23AM CDT until July 21 at 8:00PM CDT by NWS Nashville TN
Jul 20, 11:23 AM Jul 21, 8:00 PM
WHAT: Heat index values up to 110.

WHERE: A portion of Middle Tennessee.

WHEN: Until 8 PM CDT Tuesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Updated: Jul 20, 6:21 PM Source: NWS Alert