Worst air pollution Ernest Hemingway Home - Key West, today and tomorrow
Today (16 July): Air quality in Ernest Hemingway Home is poor. AQI, PM2.5, and PM10 are poor; O3 is fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM10: 74.0/100).
Tomorrow (17 July 2026): Air quality in Ernest Hemingway Home is fair. AQI improves to medium; PM2.5 decreases to fair; PM10 decreases to medium; all other pollutants stay as today. Pollution peaks around 6:00 AM (PM10: 42.7/100). 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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Key West's Ernest Hemingway Home air quality benefits from the historic Old Town Key West position with the Atlantic and Gulf trade winds providing reliable dual-coast maritime ventilation. Vehicle traffic on Whitehead Street contributes modest local sources, while the property's tropical garden canopy provides natural filtration and the outstanding trade wind exposure generally maintains the Hemingway Home among Key West's more pleasantly ventilated historic sites throughout most of the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Poor
74.0/100
PM2.5 (fine particles):
Poor
64.7/100
PM10 (coarse particles):
Poor
74.0/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Fair
25.8/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
16.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Medium
42.7/100
PM2.5 (fine particles):
Fair
38.7/100
PM10 (coarse particles):
Medium
42.7/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
22.9/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
5.3/100
Other Landmarks in Key West
Frequently Asked Questions
Is air quality bad in Ernest Hemingway Home right now?
On 16 July 2026, overall air quality in Ernest Hemingway Home is poor. AQI is the main air quality indicator at 74.0/100. Pollution peaks around 12:00 AM (PM10: 74.0/100).
Will air quality be worse tomorrow in Ernest Hemingway Home?
On 17 July 2026, air quality conditions in Ernest Hemingway Home will be better than today, with PM2.5 forecast at fair at 38.7/100. Pollution peaks around 6:00 AM (PM10: 42.7/100).
When is air pollution at its worst in Ernest Hemingway Home?
Conditions at Ernest Hemingway Home vary noticeably across the seasons: daily summer storms tend to scrub the air clean before pollution can build up, but wildfire and prescribed-burn smoke are most common in the drier months from autumn through spring. Inland areas tend to see more smoke buildup than locations closer to the coast.
Are air quality levels in Ernest Hemingway Home 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