Worst air pollution Cozumel, today and tomorrow
Today (9 August): Air quality in Cozumel is poor. AQI and PM10 are poor; PM2.5 is medium; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM10: 65.5/100).
Tomorrow (10 August 2026): Air quality in Cozumel is poor. All pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 62.7/100). 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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Cozumel's air quality benefits from its exceptional Caribbean Sea island position, with consistent northeast Caribbean trade winds providing outstanding maritime ventilation around this famous diving resort island. Vehicle traffic on surrounding roads and the cruise ship tourism and diving services corridor contribute seasonal local sources, while the extraordinary island trade wind exposure effectively disperses most local emissions and Cozumel generally maintains among Mexico's cleaner Caribbean island resort environments throughout most of the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Poor
65.5/100
PM2.5 (fine particles):
Medium
54.2/100
PM10 (coarse particles):
Poor
65.5/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
19.4/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
12.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Poor
62.7/100
PM2.5 (fine particles):
Medium
54.8/100
PM10 (coarse particles):
Poor
62.7/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Good
17.7/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
12.7/100
Frequently Asked Questions
Is air quality bad in Cozumel right now?
On 9 August 2026, overall air quality in Cozumel is poor. AQI is the main air quality indicator at 65.5/100. Pollution peaks around 11:00 PM (PM10: 65.5/100).
Will air quality be worse tomorrow in Cozumel?
On 10 August 2026, air quality conditions in Cozumel will be similar to today, with AQI forecast at poor at 62.7/100. Pollution peaks around 12:00 AM (PM10: 62.7/100).
When is air pollution at its worst in Cozumel?
Air quality in Cozumel tends to be worse when traffic emissions along with seasonal tourism traffic build up and maritime winds die down. Onshore breezes usually help clear the air, but pollution can build up when winds are light. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Cozumel 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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