Today | Weather | Sunday, October 4, 2026

Weather in Chattanooga, Tennessee

06:30 AM
Now
Cloudy Weather
70° F
Feels Like 72°
Precipitation 34 %
Wind 4 mph
Humidity 100 %
Today
Stormy Weather
Day 77°
Night 64°
Precipitation 88 %
Wind 5 mph
UV Index (0 - 11+) 1

Chattanooga Weather Forecast Updated

8 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 4, 2025)
Cloudy Night

Day

79°

Night

61°

Wind

4 mph

Precipitation

5 %

Air Quality in Chattanooga

NOW
13 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 3.22 µg/m³
PM10 4.61 µg/m³
O3 0.006 ppm
NO2 2 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 1.71 µg/m³
NO 0.03 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)
PM2.5 – 3.22 µg/m³
PM10 – 4.61 µg/m³
O3 – 12.09 µg/m³
NO2 – 3.73 µg/m³
SO2 – 0.3 µg/m³
CO – 137.89 µg/m³
NH3 – 1.71 µg/m³
NO – 0.03 µg/m³