Worst air pollution Southernmost Point - Key West, today and tomorrow
Today (16 July): Air quality in Southernmost Point is fair. O3 is fair; AQI, PM2.5, and PM10 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM10: 52.0/100).
Tomorrow (17 July 2026): Air quality in Southernmost Point is fair. AQI worsens to fair; PM2.5 increases to fair; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 6:00 AM (PM10: 27.3/100). 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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Key West's Southernmost Point air quality benefits from its exceptional Atlantic Ocean and Gulf of Mexico dual-coastal island position at the southernmost continental US location, with consistent Atlantic and Gulf trade winds providing outstanding maritime ventilation. Vehicle traffic on South Street contributes modest seasonal sources, while the extraordinary dual-ocean exposure and the consistent trade wind geometry generally maintain Key West among Florida's most reliably ventilated coastal communities throughout most of the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Medium
52.0/100
PM2.5 (fine particles):
Medium
49.0/100
PM10 (coarse particles):
Medium
52.0/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
25.8/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
8.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Fair
27.3/100
PM2.5 (fine particles):
Fair
21.5/100
PM10 (coarse particles):
Fair
27.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
22.9/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
2.8/100
Other Landmarks in Key West
Frequently Asked Questions
Is air quality bad in Southernmost Point right now?
On 16 July 2026, overall air quality in Southernmost Point is fair. O3 is the main pollutant at 25.8/100. Pollution peaks around 12:00 AM (PM10: 52.0/100).
Will air quality be worse tomorrow in Southernmost Point?
On 17 July 2026, air quality conditions in Southernmost Point will be similar to today, with AQI forecast at fair at 27.3/100. Pollution peaks around 6:00 AM (PM10: 27.3/100).
When is air pollution at its worst in Southernmost Point?
At Southernmost Point, air quality tends to follow Key West's broader seasonal rhythm, as the wet season's frequent storms generally keep particulate levels lower than in the dry months; by contrast, wildfire and prescribed-burn smoke are most common in the drier months from autumn through spring. Sea breezes help disperse pollution on most days, though smoke from inland fires can still drift into populated areas.
Are air quality levels in Southernmost Point 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