Today | Weather | Monday, July 20, 2026

Active Weather Warnings

Heat Advisory

Weather in Clarksville, Tennessee

12:32 AM

Now

73° F

Feels Like 82°

Precipitation 29 %

Wind 2 mph

Humidity 99 %

Today

Day 91°

Night 75°

Precipitation 55 %

Wind 6 mph

UV Index (0 - 11+) 6

Clarksville Weather Forecast Updated

13 minutes ago

Last updated on July 20, 2026 at 12:19 AM

Weather Forecast History

Last Year's Weather on This Day (July 20, 2025)

Day

91°

Night

77°

Wind

6 mph

Precipitation

48 %

Air Quality in Clarksville

NOW

13 AQI

Good air quality Dominant pollutant: PM_2.5

Pollutant Concentrations:

PM_2.5 3.2 µg/m³

PM₁₀ 3.71 µg/m³

O₃ 0.006 ppm

NO₂ 1.2 ppb

SO₂ 0.1 ppb

CO 0.09 ppm

NH₃ 0.42 µg/m³

NO 0.01 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 3.2 µg/m³

PM₁₀ – 3.71 µg/m³

O₃ – 11.84 µg/m³

NO₂ – 2.23 µg/m³

SO₂ – 0.14 µg/m³

CO – 99.74 µg/m³

NH₃ – 0.42 µg/m³

NO – 0.01 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Clarksville

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 19 at 9:40PM CDT until July 21 at 8:00PM CDT by NWS Nashville TN

Jul 20, 10:00 AM → Jul 21, 8:00 PM

WHAT: Heat index values up to 108.

WHERE: A portion of Middle Tennessee.

WHEN: From 10 AM Monday to 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.

Updated: Jul 20, 12:19 AM Source: NWS Alert