Worst air pollution Cacoal, today and tomorrow
Today (16 July): 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 11:00 PM (O3: 24.2/100).
Tomorrow (17 July 2026): Air quality in Cacoal is fair. All pollutants stay as today. Pollution peaks around 3:00 AM (O3: 26.0/100). 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
Use our Strava plugin to check your own exposure.
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 - 16 July | Pollution peaks at 23:00
AQI:
Fair
24.2/100
PM2.5 (fine particles):
Fair
20.6/100
PM10 (coarse particles):
Good
8.6/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
24.2/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
8.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 03:00
AQI:
Fair
26.0/100
PM2.5 (fine particles):
Fair
23.2/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
26.0/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
13.9/100
Frequently Asked Questions
Is air quality bad in Cacoal right now?
On 16 July 2026, overall air quality in Cacoal is fair. AQI is the main air quality indicator at 24.2/100. Pollution peaks around 11:00 PM (O3: 24.2/100).
Will air quality be worse tomorrow in Cacoal?
On 17 July 2026, air quality conditions in Cacoal will be similar to today, with AQI forecast at fair at 26.0/100. Pollution peaks around 3:00 AM (O3: 26.0/100).
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.
Want to see air quality forecasts for other cities in Brazil?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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