Worst air pollution Ilhéus, today and tomorrow
Today (9 August): Air quality in Ilhéus is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (PM2.5: 23.3/100).
Tomorrow (10 August 2026): Air quality in Ilhéus is fair. O3 decreases to good; all other pollutants stay as today. Pollution peaks around 1:00 AM (PM2.5: 24.2/100). 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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Ilhéus's air quality reflects its position on the southern Bahia cocoa coast, with vehicle emissions from the BR-415 and the surrounding cocoa processing, tourism, and port operations at the Port of Ilhéus contributing local sources. Atlantic trade winds from the Bahia coast generally provide reliable ventilation across this historic cocoa capital, while the Serra do Padeiro hills inland create topographic variation and the coastal position generally maintains moderate to good readings throughout most of the year.
Today - 9 August | Pollution peaks at 22:00
AQI:
Fair
23.3/100
PM2.5 (fine particles):
Fair
23.3/100
PM10 (coarse particles):
Good
10.7/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
21.7/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
4.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 01:00
AQI:
Fair
24.2/100
PM2.5 (fine particles):
Fair
24.2/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
20.0/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
4.9/100
Pollen forecast in Ilhéus
View pollen forecastFrequently Asked Questions
Is air quality bad in Ilhéus right now?
On 9 August 2026, overall air quality in Ilhéus is fair. AQI is the main air quality indicator at 23.3/100. Pollution peaks around 10:00 PM (PM2.5: 23.3/100).
Will air quality be worse tomorrow in Ilhéus?
On 10 August 2026, air quality conditions in Ilhéus will be similar to today, with AQI forecast at fair at 24.2/100. Pollution peaks around 1:00 AM (PM2.5: 24.2/100).
When is air pollution at its worst in Ilhéus?
Residents in Ilhéus are most likely to notice reduced air quality when cacao plantation trees and restinga coastal scrub pollen peaks, or due to vehicle emissions from the BR-415 and the surrounding cocoa processing, tourism; a shift to wetter or windier weather typically brings noticeable relief.
Are air quality levels in Ilhéus 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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