Worst air pollution St. Marys, today and tomorrow
Today (16 July): Air quality in St. Marys is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 28.6/100).
Tomorrow (17 July 2026): Air quality in St. Marys is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 27.9/100). 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
Use our Strava plugin to check your own exposure.
Air quality in St. Marys is driven mostly by coastal Georgia humidity — ocean and marsh exposure keep air quality generally favorable. Day-to-day conditions in St. Marys can still vary with local weather, wind direction, and time of year. Checking current readings is still the best way to plan outdoor activity around St. Marys.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
28.6/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
19.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
28.6/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
27.9/100
PM2.5 (fine particles):
Good
15.0/100
PM10 (coarse particles):
Good
14.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
27.9/100
SO2 (sulfur dioxide):
Good
2.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
3.5/100
Pollen forecast in St. Marys
View pollen forecastFrequently Asked Questions
Is air quality bad in St. Marys right now?
On 16 July 2026, overall air quality in St. Marys is fair. AQI is the main air quality indicator at 28.6/100. Pollution peaks around 12:00 PM (O3: 28.6/100).
Will air quality be worse tomorrow in St. Marys?
On 17 July 2026, air quality conditions in St. Marys will be similar to today, with AQI forecast at fair at 27.9/100. Pollution peaks around 12:00 PM (O3: 27.9/100).
When is air pollution at its worst in St. Marys?
Air quality across St. Marys rises and falls with the seasons, as mild winter weather usually brings the year's cleanest air; by contrast, long, hot, humid summers bring the year's worst ozone readings. Occasional agricultural or prescribed-burning smoke can add short-lived particulate spikes outside the main summer ozone season.
Are air quality levels in St. Marys 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?
Check air quality in other popular cities:
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