Today | Weather | Thursday, August 21, 2025

Weather in Chattanooga, Tennessee

08:17 PM

Now

82° F

Feels Like 88°

Precipitation 18 %

Wind 5 mph

UV Index (0 - 11+) 0

Humidity 74 %

Today

Day 84°

Night 72°

Precipitation 23 %

Wind 4 mph

Other:

Mainly clear and moist.

Chattanooga Weather Forecast Updated

33 minutes ago

Last updated on August 21, 2025 7:44 PM

Weather Forecast History

Last Year's Weather on This Day (August 21, 2024)

Day

84°

Night

64°

Wind

7 mph

UV Index

Precipitation

Air quality in Chattanooga

NOW

56 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 17.65 µg/m³

PM10 18.70 µg/m³

O₃ 43.81 ppb

NO₂ 3.67 ppb

SO₂ 0.63 ppb

CO 208.01 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

View Hourly Air Quality Forecast