Today | Weather | Wednesday, September 9, 2026

Weather in Chattanooga, Tennessee

09:24 PM
Now
Night
82° F
Feels Like 81°
Precipitation 0 %
Wind 5 mph
Humidity 53 %
Today
Night
Day 93°
Night 66°
Precipitation 1 %
Wind 5 mph

Chattanooga Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 9, 2025)
Night

Day

82°

Night

57°

Wind

2 mph

Precipitation

1 %

Air Quality in Chattanooga

NOW
30 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.21 µg/m³
PM10 8.27 µg/m³
O3 0.033 ppm
NO2 2.9 ppb
SO2 0.3 ppb
CO 0.11 ppm
NH3 6.88 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)
PM2.54.21 µg/m³
PM108.27 µg/m³
O364.21 µg/m³
NO25.54 µg/m³
SO20.74 µg/m³
CO131.04 µg/m³
NH36.88 µg/m³
NO0 µg/m³