Hourly Weather | Today Wednesday, May 20, 2026
Johnson City, Tennessee
7 PM
Sunny with a Chance of Thunderstorms
82°
Feels Like 79°
51
Humidity: 56%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Weather
79°
Feels Like 77°
25
Humidity: 64%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Weather
75°
Feels Like 75°
20
Humidity: 72%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
72°
Feels Like 73°
20
Humidity: 81%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Weather
70°
Feels Like 70°
20
Humidity: 89%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.57 µg/m³
  • PM10: 6.7 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.5 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
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.46 µg/m³
  • PM10: 6.53 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.9 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
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.19 µg/m³
  • PM10: 6.11 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 PM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.18 µg/m³
  • PM10: 6.04 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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