Worst air pollution Oldest City Historic District - St. Augustine, today and tomorrow
Today (16 July): Air quality in Oldest City Historic District is fair. AQI, PM2.5, PM10, and O3 are fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (PM10: 34.7/100).
Tomorrow (17 July 2026): Air quality in Oldest City Historic District is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 26.5/100). 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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St. Augustine's Oldest City Historic District air quality reflects the historic colonial street grid, with vehicle traffic on the surrounding St. George Street pedestrian corridor and the concentrated tourism character contributing local sources. The Matanzas Bay provides limited maritime ventilation, while the neighbourhood's walkable historic character and the bay proximity generally maintain moderate St. Augustine metropolitan readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
34.7/100
PM2.5 (fine particles):
Fair
24.6/100
PM10 (coarse particles):
Fair
34.7/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
29.8/100
SO2 (sulfur dioxide):
Good
6.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
5.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
26.5/100
PM2.5 (fine particles):
Fair
20.4/100
PM10 (coarse particles):
Fair
20.5/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
26.5/100
SO2 (sulfur dioxide):
Good
5.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
4.5/100
Other Landmarks in St. Augustine
Frequently Asked Questions
Is air quality bad in Oldest City Historic District right now?
On 16 July 2026, overall air quality in Oldest City Historic District is fair. AQI is the main air quality indicator at 34.7/100. Pollution peaks around 1:00 PM (PM10: 34.7/100).
Will air quality be worse tomorrow in Oldest City Historic District?
On 17 July 2026, air quality conditions in Oldest City Historic District will be similar to today, with AQI forecast at fair at 26.5/100. Pollution peaks around 1:00 PM (O3: 26.5/100).
When is air pollution at its worst in Oldest City Historic District?
Oldest City Historic District experiences the same seasonal air quality swings as the rest of St. Augustine: the wetter summer months often see cleaner air, as frequent afternoon storms wash pollution out quickly, but without the wet season's regular storms, dry-season smoke can linger for days at a time. Inland areas tend to see more smoke buildup than locations closer to the coast.
Are air quality levels in Oldest City Historic District 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