Today | Weather | Monday, April 27, 2026

Weather in Johnson City, Tennessee

08:39 AM
Now
Cloudy Weather
59° F
Feels Like 63°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3
Humidity 76 %
Today
Cloudy Weather
Day 81°
Night 54°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Johnson City Weather Forecast Updated

37 minutes ago
Last updated on

Air Quality in Johnson City

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.02 µg/m³
PM10 5.01 µg/m³
O3 0.025 ppm
NO2 2 ppb
SO2 0.5 ppb
CO 0.15 ppm
NH3 0.59 µg/m³
NO 0.63 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)
PM2.54.02 µg/m³
PM105.01 µg/m³
O349.14 µg/m³
NO23.67 µg/m³
SO21.21 µg/m³
CO166.75 µg/m³
NH30.59 µg/m³
NO0.63 µg/m³