Worst air pollution Caucaia, today and tomorrow

Today (9 August): Air quality in Caucaia is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 19.6/100).
Tomorrow (10 August 2026): Air quality in Caucaia is fair. AQI worsens to fair; PM2.5 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (PM2.5: 20.3/100). 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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Caucaia's air quality benefits from its position on the Ceará coast adjacent to Fortaleza, with consistent Atlantic trade winds providing reliable maritime ventilation across this rapidly urbanising coastal municipality. Vehicle emissions from the CE-085 corridor and the expanding industrial district near the Pecém port complex are the primary local sources, while the coastal position and consistent northeast trade winds generally keep readings moderate throughout the year.

Today - 9 August | Pollution peaks at 06:00

AQI:

Good

19.6/100

PM2.5 (fine particles):

Good

11.4/100

PM10 (coarse particles):

Good

5.1/100

NO2 (nitrogen dioxide):

Good

0.1/100

O3 (ozone):

Good

19.6/100

SO2 (sulfur dioxide):

Good

1.4/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

0.6/100

PM1 (ultrafine particles):

Good

3.5/100

Levels show the poorest local air quality during the day

Tomorrow - 10 August | Pollution peaks at 17:00

AQI:

Fair

20.3/100

PM2.5 (fine particles):

Fair

20.3/100

PM10 (coarse particles):

Good

8.3/100

NO2 (nitrogen dioxide):

Good

0.1/100

O3 (ozone):

Fair

20.2/100

SO2 (sulfur dioxide):

Good

1.5/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

0.6/100

PM1 (ultrafine particles):

Good

10.8/100

Pollen forecast in Caucaia

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Frequently Asked Questions

Is air quality bad in Caucaia right now?

On 9 August 2026, overall air quality in Caucaia is good. AQI is the main air quality indicator at 19.6/100. Pollution peaks around 6:00 AM (O3: 19.6/100).

Will air quality be worse tomorrow in Caucaia?

On 10 August 2026, air quality conditions in Caucaia will be worse than today, with AQI forecast at fair at 20.3/100. Pollution peaks around 5:00 PM (PM2.5: 20.3/100).

When is air pollution at its worst in Caucaia?

In Caucaia, reduced air quality is most noticeable when coconut palm and coastal dune restinga vegetation pollen peaks, and on days affected by vehicle emissions from the CE-085 corridor and the expanding industrial district near the Pecém port complex; the rest of the year, the local setting keeps things noticeably clearer than average.

Are air quality levels in Caucaia 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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