Worst air pollution Johnson City, today and tomorrow
Today (16 July): Air quality in Johnson City is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 39.3/100).
Tomorrow (17 July 2026): Air quality in Johnson City is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 37.7/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Johnson City's air quality reflects the Tri-Cities valley topography trapping vehicle emissions from I-26 between Holston and Iron mountains. Summer ozone from Appalachian biogenic VOCs combining with vehicle NOₓ is the primary warm-season concern across this Tennessee mountain basin.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
39.3/100
PM2.5 (fine particles):
Good
19.9/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
16.2/100
O3 (ozone):
Fair
39.3/100
SO2 (sulfur dioxide):
Good
4.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
16.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 08:00
AQI:
Fair
37.7/100
PM2.5 (fine particles):
Good
17.3/100
PM10 (coarse particles):
Good
7.5/100
NO2 (nitrogen dioxide):
Good
10.9/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
6.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
12.4/100
Pollen forecast in Johnson City
View pollen forecastFrequently Asked Questions
Is air quality bad in Johnson City right now?
On 16 July 2026, overall air quality in Johnson City is fair. AQI is the main air quality indicator at 39.3/100. Pollution peaks around 2:00 PM (O3: 39.3/100).
Will air quality be worse tomorrow in Johnson City?
On 17 July 2026, air quality conditions in Johnson City will be similar to today, with AQI forecast at fair at 37.7/100. Pollution peaks around 8:00 AM (O3: 37.7/100).
When is air pollution at its worst in Johnson City?
Johnson City sees air quality change through the year: winter is typically the cleanest season, with mild temperatures and fewer stagnant air episodes, but summer heat combined with the region's dense forest cover drives an extended ozone season. Prescribed burns are more common in the cooler months and can add brief smoke episodes.
Are air quality levels in Johnson City based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United States?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app