Worst air pollution Cacoal, today and tomorrow
Today (9 August): Air quality in Cacoal is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 PM (PM2.5: 25.0/100).
Tomorrow (10 August 2026): Air quality in Cacoal is fair. All pollutants stay as today. Pollution peaks around 4:00 AM (O3: 20.8/100). 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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Cacoal's air quality faces severe seasonal challenges as a major Rondônia agricultural frontier city, with dry season burning from surrounding soybean and cattle deforestation generating intense PM2.5 episodes between June and October. Vehicle emissions from the BR-364 contribute year-round, while the flat western Rondônia plateau's calm dry season conditions allow agricultural and deforestation smoke to accumulate extensively throughout the broader Amazon frontier region.
Today - 9 August | Pollution peaks at 21:00
AQI:
Fair
25.0/100
PM2.5 (fine particles):
Fair
25.0/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
21.3/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 04:00
AQI:
Fair
20.8/100
PM2.5 (fine particles):
Fair
20.6/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
20.8/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
6.0/100
Frequently Asked Questions
Is air quality bad in Cacoal right now?
On 9 August 2026, overall air quality in Cacoal is fair. AQI is the main air quality indicator at 25.0/100. Pollution peaks around 9:00 PM (PM2.5: 25.0/100).
Will air quality be worse tomorrow in Cacoal?
On 10 August 2026, air quality conditions in Cacoal will be similar to today, with AQI forecast at fair at 20.8/100. Pollution peaks around 4:00 AM (O3: 20.8/100).
When is air pollution at its worst in Cacoal?
Air quality dips in Cacoal mostly track native Amazon forest remnants and secondary vegetation pollen peaks and periods of dry season burning from surrounding soybean and cattle deforestation; conditions usually ease once the wet season or windier weather returns.
Are air quality levels in Cacoal 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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