Worst air pollution Downtown Chattanooga - Chattanooga, today and tomorrow
Today (16 July): Air quality in Downtown Chattanooga is fair. PM2.5, PM10, NO2, and PM1 are fair; AQI and O3 are medium; SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 41.4/100).
Tomorrow (17 July 2026): Air quality in Downtown Chattanooga is fair. PM10 decreases to good; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 43.1/100). 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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Chattanooga's Downtown air quality reflects the Tennessee River valley's topographic enclosure between Lookout and Signal mountains, with vehicle traffic on the surrounding Market Street and Broad Street corridors generating local sources. The river valley's ridgeline enclosure concentrates emissions under inversions, while the Tennessee Aquarium and Riverpark provide limited local buffering and downtown generally maintains moderate to elevated Chattanooga metropolitan readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Medium
41.4/100
PM2.5 (fine particles):
Fair
23.5/100
PM10 (coarse particles):
Fair
28.8/100
NO2 (nitrogen dioxide):
Fair
36.8/100
O3 (ozone):
Medium
41.4/100
SO2 (sulfur dioxide):
Good
9.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Fair
21.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Medium
43.1/100
PM2.5 (fine particles):
Fair
23.9/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Fair
34.3/100
O3 (ozone):
Medium
43.1/100
SO2 (sulfur dioxide):
Good
6.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Fair
21.2/100
Other Landmarks in Chattanooga
Sports venues in Chattanooga
Frequently Asked Questions
Is air quality bad in Downtown Chattanooga right now?
On 16 July 2026, overall air quality in Downtown Chattanooga is fair. NO2 is the main pollutant at 36.8/100. Pollution peaks around 2:00 PM (O3: 41.4/100).
Will air quality be worse tomorrow in Downtown Chattanooga?
On 17 July 2026, air quality conditions in Downtown Chattanooga will be similar to today, with NO2 forecast at fair at 34.3/100. Pollution peaks around 11:00 AM (O3: 43.1/100).
When is air pollution at its worst in Downtown Chattanooga?
Downtown Chattanooga's air quality follows a clear seasonal pattern. In short, winter is typically the cleanest season, with mild temperatures and fewer stagnant air episodes, whereas summer heat combined with the region's dense forest cover drives an extended ozone season. Occasional agricultural or prescribed-burning smoke can add short-lived particulate spikes outside the main summer ozone season.
Are air quality levels in Downtown Chattanooga 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.
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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