Worst air pollution Miami, today and tomorrow

Today (18 July): Air quality in Miami is very poor. AQI and PM10 are very poor; PM2.5 is poor; O3 is fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM10: 85.3/100).
Tomorrow (19 July 2026): Air quality in Miami is very poor. All pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 89.9/100). 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

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Miami's air quality is generally good by US urban standards, benefiting from consistent Atlantic and Gulf trade winds that provide reliable ventilation across this low-lying peninsula city. Summer afternoon thunderstorms wash particulates effectively, while the flat South Florida terrain prevents the topographic pollution trapping seen in inland US cities.

Today - 18 July | Pollution peaks at 23:00

AQI:

Very poor

85.3/100

PM2.5 (fine particles):

Poor

60.8/100

PM10 (coarse particles):

Very poor

85.3/100

NO2 (nitrogen dioxide):

Good

0.2/100

O3 (ozone):

Fair

28.5/100

SO2 (sulfur dioxide):

Good

1.2/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

0.9/100

PM1 (ultrafine particles):

Good

13.8/100

Levels show the poorest local air quality during the day

Tomorrow - 19 July | Pollution peaks at 00:00

AQI:

Very poor

89.9/100

PM2.5 (fine particles):

Poor

63.4/100

PM10 (coarse particles):

Very poor

89.9/100

NO2 (nitrogen dioxide):

Good

0.2/100

O3 (ozone):

Fair

33.2/100

SO2 (sulfur dioxide):

Good

1.3/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

0.8/100

PM1 (ultrafine particles):

Good

15.3/100

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Frequently Asked Questions

Is air quality bad in Miami right now?

On 18 July 2026, overall air quality in Miami is very poor. AQI is the main air quality indicator at 85.3/100. Pollution peaks around 11:00 PM (PM10: 85.3/100).

Will air quality be worse tomorrow in Miami?

On 19 July 2026, air quality conditions in Miami will be similar to today, with AQI forecast at very poor at 89.9/100. Pollution peaks around 12:00 AM (PM10: 89.9/100).

When is air pollution at its worst in Miami?

Like most US cities, Miami sees air quality shift from season to season: frequent afternoon thunderstorms through the wet season help keep particulate levels down for much of the year, but the drier months from roughly November through April bring the highest risk of wildfire and prescribed-burn smoke. Sea breezes help disperse pollution on most days, though smoke from inland fires can still drift into populated areas.

Are air quality levels in Miami 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: 18 July 2026 at 21:30 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