Today | Weather | Saturday, April 4, 2026

Weather in Knoxville, Tennessee

04:38 PM
Now
Cloudy Weather
81° F
Feels Like 79°
Precipitation 14 %
Wind 15 mph
UV Index (0 - 11+) 2
Humidity 47 %
Today
Sunny with a Chance of Thunderstorms
Day 81°
Night 55°
Precipitation 55 %
Wind 10 mph
UV Index (0 - 11+) 7

Knoxville Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 4, 2025)
Cloudy Weather

Day

88°

Night

66°

Wind

9 mph

UV Index

7

Precipitation

10 %

Air Quality in Knoxville

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.88 µg/m³
PM10 2.95 µg/m³
O3 0.038 ppm
NO2 0.9 ppb
SO2 0.5 ppb
CO 0.11 ppm
NH3 1.74 µg/m³
NO 0.01 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)
PM2.51.88 µg/m³
PM102.95 µg/m³
O374.13 µg/m³
NO21.74 µg/m³
SO21.2 µg/m³
CO120.83 µg/m³
NH31.74 µg/m³
NO0.01 µg/m³