❮
Today Hourly 7 days 30 days Air Quality
❯
Hourly Weather | Today › Sunday, December 14, 2025
Active Weather Warnings
Knoxville, Tennessee
4 PM
Sunny Weather
27°
Feels Like 18°
0
Humidity: 39%
Wind: 10 mph
UV Index: 1
5 PM
Sunny Weather
25°
Feels Like 16°
0
Humidity: 35%
Wind: 9 mph
UV Index: 0
6 PM
Night
23°
Feels Like 16°
0
Humidity: 39%
Wind: 8 mph
UV Index: 0
7 PM
Night
21°
Feels Like 14°
0
Humidity: 40%
Wind: 8 mph
UV Index: 0
8 PM
Night
21°
Feels Like 12°
0
Humidity: 44%
Wind: 8 mph
UV Index: 0
9 PM
Night
19°
Feels Like 12°
0
Humidity: 47%
Wind: 7 mph
UV Index: 0
10 PM
Night
18°
Feels Like 10°
0
Humidity: 51%
Wind: 7 mph
UV Index: 0
11 PM
Night
18°
Feels Like 10°
0
Humidity: 54%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

4 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.36 µg/m³
  • PM10: 1.61 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.3 µg/m³
  • PM10: 1.56 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.23 µg/m³
  • PM10: 1.51 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.17 µg/m³
  • PM10: 1.48 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.11 µg/m³
  • PM10: 1.46 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.11 µg/m³
  • PM10: 1.52 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 1.66 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 1.83 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Knoxville

Moderate Expected Likely

Cold Weather Advisory

Cold Weather Advisory issued December 14 at 12:48PM EST until December 15 at 10:00AM EST by NWS Morristown TN
Dec 14, 5:00 PM → Dec 15, 10:00 AM
WHAT: Very cold wind chills as low as zero to 5 above zero
expected at times.

WHERE: Portions of southwest North Carolina, east Tennessee, and
southwest Virginia.

WHEN: From 5 PM this afternoon to 10 AM EST Monday.

IMPACTS: The cold wind chills could result in hypothermia if
precautions are not taken.
+ Read More
Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Updated: Dec 14, 3:42 PM Source: NWS Alert