Today | Weather | Saturday, May 16, 2026

Weather in Chattanooga, Tennessee

08:33 AM
Now
Cloudy Weather
63° F
Feels Like 68°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3
Humidity 63 %
Today
Cloudy Weather
Day 84°
Night 61°
Precipitation 3 %
Wind 7 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

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

57 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 16, 2025)
Sunny with a Chance of Thunderstorms

Day

84°

Night

68°

Wind

8 mph

UV Index

10

Precipitation

55 %

Air Quality in Chattanooga

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 5.04 µg/m³
PM10 7 µg/m³
O3 0.032 ppm
NO2 1.3 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 4.54 µg/m³
NO 0.28 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)
PM2.55.04 µg/m³
PM107 µg/m³
O362.23 µg/m³
NO22.37 µg/m³
SO20.54 µg/m³
CO123.35 µg/m³
NH34.54 µg/m³
NO0.28 µg/m³