Today | Weather | Sunday, August 23, 2026

Weather in Chattanooga, Tennessee

11:19 PM
Now
Cloudy Night
73° F
Feels Like 72°
Precipitation 0 %
Wind 5 mph
Humidity 69 %
Today
Cloudy Weather
Day 91°
Night 64°
Precipitation 8 %
Wind 7 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Chattanooga Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (August 23, 2025)
Stormy Weather

Day

86°

Night

72°

Wind

4 mph

Precipitation

70 %

Air Quality in Chattanooga

NOW
20 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.93 µg/m³
PM10 7.84 µg/m³
O3 0.021 ppm
NO2 2.6 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 11.43 µg/m³
NO 0 µg/m³
PM2.5 – 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)
PM2.53.93 µg/m³
PM107.84 µg/m³
O342.12 µg/m³
NO24.92 µg/m³
SO20.46 µg/m³
CO124.43 µg/m³
NH311.43 µg/m³
NO0 µg/m³