Worst air pollution Caicó, today and tomorrow
Today (16 July): Air quality in Caicó is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (PM2.5: 26.4/100).
Tomorrow (17 July 2026): Air quality in Caicó is fair. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (PM2.5: 37.6/100). 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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Caicó's air quality reflects the Rio Grande do Norte semi-arid Seridó interior at 168 metres in the upper Piranhas river basin, with vehicle emissions from the BR-226 and surrounding cotton, goat, and ceramics industry contributing local sources. Drought conditions and Caatinga burning contribute seasonal PM10 elevation, while the flat Seridó semi-arid terrain generally allows reasonable wind dispersal on most days and the inland position reduces the beneficial Atlantic trade wind coastal ventilation throughout the dry season.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
26.4/100
PM2.5 (fine particles):
Fair
26.4/100
PM10 (coarse particles):
Good
11.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
13.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Fair
37.6/100
PM10 (coarse particles):
Good
15.9/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
24.3/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Fair
23.1/100
Pollen forecast in Caicó
View pollen forecastFrequently Asked Questions
Is air quality bad in Caicó right now?
On 16 July 2026, overall air quality in Caicó is fair. AQI is the main air quality indicator at 26.4/100. Pollution peaks around 4:00 PM (PM2.5: 26.4/100).
Will air quality be worse tomorrow in Caicó?
On 17 July 2026, air quality conditions in Caicó will be similar to today, with AQI forecast at fair at 37.6/100. Pollution peaks around 1:00 PM (PM2.5: 37.6/100).
When is air pollution at its worst in Caicó?
You're most likely to notice worse air in Caicó when mandacaru cactus and sparse drought-adapted trees pollen peaks, or due to vehicle emissions from the BR-226 and surrounding cotton, goat, and ceramics industry; background levels usually settle back down once the season changes.
Are air quality levels in Caicó 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?
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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