Hourly Weather | Today Tuesday, July 21, 2026
Johnson City, Tennessee
5 AM
Cloudy Night
72°
Feels Like 73°
34
Humidity: 93%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
70°
Feels Like 72°
34
Humidity: 100%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
72°
Feels Like 73°
29
Humidity: 96%
UV Index: 1
Wind: 5 mph
8 AM
Cloudy Weather
73°
Feels Like 79°
20
Humidity: 90%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
75°
Feels Like 82°
20
Humidity: 84%
UV Index: 1
Wind: 6 mph
10 AM
Cloudy Weather
79°
Feels Like 84°
20
Humidity: 78%
UV Index: 2
Wind: 7 mph
11 AM
Cloudy Weather
82°
Feels Like 90°
20
Humidity: 72%
UV Index: 3
Wind: 7 mph
12 PM
Cloudy Weather
84°
Feels Like 93°
20
Humidity: 67%
UV Index: 4
Wind: 7 mph
1 PM
Cloudy Weather
86°
Feels Like 95°
25
Humidity: 64%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
88°
Feels Like 97°
43
Humidity: 61%
UV Index: 4
Wind: 8 mph
3 PM
Cloudy Weather
90°
Feels Like 97°
47
Humidity: 56%
UV Index: 3
Wind: 7 mph
4 PM
Stormy Weather
90°
Feels Like 93°
51
Humidity: 60%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
88°
Feels Like 93°
24
Humidity: 60%
UV Index: 1
Wind: 7 mph
6 PM
Cloudy Weather
88°
Feels Like 93°
19
Humidity: 63%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
84°
Feels Like 91°
24
Humidity: 67%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
82°
Feels Like 88°
34
Humidity: 73%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
81°
Feels Like 86°
34
Humidity: 76%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
79°
Feels Like 82°
39
Humidity: 80%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
75°
Feels Like 81°
49
Humidity: 84%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
13 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.08 µg/m³
  • PM10: 4.28 µg/m³
  • O3: 0.009 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

6 AM
14 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.29 µg/m³
  • PM10: 4.55 µg/m³
  • O3: 0.010 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

7 AM
15 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.53 µg/m³
  • PM10: 4.78 µg/m³
  • O3: 0.010 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

8 AM
16 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.81 µg/m³
  • PM10: 5.02 µg/m³
  • O3: 0.011 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 AM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.18 µg/m³
  • PM10: 5.28 µg/m³
  • O3: 0.015 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 AM
18 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.35 µg/m³
  • PM10: 5.42 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

11 AM
19 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.5 µg/m³
  • PM10: 5.54 µg/m³
  • O3: 0.018 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

12 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.15 µg/m³
  • PM10: 3.72 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

1 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 2.33 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

2 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.38 µg/m³
  • PM10: 1.67 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

3 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.07 µg/m³
  • PM10: 1.3 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.12 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 1.02 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 0.95 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.77 µg/m³
  • PM10: 0.93 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.73 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 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: 0.7 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.026 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.71 µg/m³
  • PM10: 0.93 µg/m³
  • O3: 0.025 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 0.95 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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