Worst air pollution 4th & Gill - Knoxville, today and tomorrow
Today (16 July): Air quality in 4th & Gill is fair. PM2.5 and PM1 are fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 9:00 AM (O3: 54.3/100).
Tomorrow (17 July 2026): Air quality in 4th & Gill is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 59.2/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Knoxville's 4th and Gill air quality reflects the historic Victorian residential neighbourhood, with vehicle traffic on the surrounding North Central Street corridor contributing modest local sources. The neighbourhood's tree-lined historic character provides natural filtration, while the Tennessee Valley's topographic enclosure creates seasonal inversions and 4th and Gill generally maintains among Knoxville's more pleasant inner residential environments throughout most of the year.
Today - 16 July | Pollution peaks at 09:00
AQI:
Medium
54.3/100
PM2.5 (fine particles):
Fair
24.4/100
PM10 (coarse particles):
Good
12.1/100
NO2 (nitrogen dioxide):
Medium
41.8/100
O3 (ozone):
Medium
54.3/100
SO2 (sulfur dioxide):
Good
8.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.8/100
PM1 (ultrafine particles):
Fair
23.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Medium
59.2/100
PM2.5 (fine particles):
Fair
22.6/100
PM10 (coarse particles):
Good
8.6/100
NO2 (nitrogen dioxide):
Medium
40.3/100
O3 (ozone):
Medium
59.2/100
SO2 (sulfur dioxide):
Good
9.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Fair
22.3/100
Other Landmarks in Knoxville
Frequently Asked Questions
Is air quality bad in 4th & Gill right now?
On 16 July 2026, overall air quality in 4th & Gill is fair. PM2.5 is the main pollutant at 24.4/100. Pollution peaks around 9:00 AM (O3: 54.3/100).
Will air quality be worse tomorrow in 4th & Gill?
On 17 July 2026, air quality conditions in 4th & Gill will be similar to today, with PM2.5 forecast at fair at 22.6/100. Pollution peaks around 10:00 AM (O3: 59.2/100).
When is air pollution at its worst in 4th & Gill?
Air quality at 4th & Gill shifts across the year — winter is typically the cleanest season, with mild temperatures and fewer stagnant air episodes, whereas summer heat, humidity, and emissions from surrounding forests combine to drive ozone levels up. Occasional agricultural or prescribed-burning smoke can add short-lived particulate spikes outside the main summer ozone season.
Are air quality levels in 4th & Gill 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