Today | Weather | Tuesday, January 13, 2026
Active Weather Warnings

Weather in Johnson City, Tennessee

05:05 PM
Now
Sunny Weather
50° F
Feels Like 46°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 0
Humidity 40 %
Today
Cloudy Weather
Day 52°
Night 30°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3

Johnson City Weather Forecast Updated

Last updated on

Air Quality in Johnson City

NOW
41 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.41 µg/m³
PM10 4.11 µg/m³
O3 0.044 ppm
NO2 1.8 ppb
SO2 0.4 ppb
CO 0.13 ppm
NH3 1.08 µg/m³
NO 0.23 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)
PM2.53.41 µg/m³
PM104.11 µg/m³
O386.16 µg/m³
NO23.3 µg/m³
SO21.09 µg/m³
CO154.31 µg/m³
NH31.08 µg/m³
NO0.23 µg/m³

Weather Alerts and Warnings for Johnson City

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued January 13 at 1:54PM EST by NWS Morristown TN
Jan 13, 1:54 PM Jan 14, 4:00 AM
A cold front will move across east Tennessee, southwest Virginia,
and southwest North Carolina late Wednesday afternoon and evening
bring with it widespread precipitation and colder temperatures. A
band of rain will move into the region then mix with and change
over to snow by early evening.

A brief period of accumulating snow is possible across the
Plateau, southwest Virginia, northeast Tennessee, and central
valley. Snowfall of 1/2 inch is possible mainly on grassy and
elevated surfaces, and up to 1 inch across the higher ridges.

Snow covered roadways are possible across the higher terrain
Wednesday evening. Stay tuned to NOAA Weather Radio and other
local media for further details or updates.
Updated: Jan 13, 3:48 PM Source: NWS Alert