Worst air pollution Cajazeiras, today and tomorrow
Today (16 July): Air quality in Cajazeiras is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (PM2.5: 23.6/100).
Tomorrow (17 July 2026): Air quality in Cajazeiras is fair. PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM2.5: 33.8/100). 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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Cajazeiras' air quality reflects the Paraíba semi-arid Sertão interior at 293 metres in the upper Piranhas-Açu basin, with vehicle emissions from the BR-230 Transnordestina highway and surrounding cattle, cotton, and subsistence farming contributing local sources. Drought conditions and Caatinga burning contribute seasonal PM10 elevation, while the flat semi-arid terrain allows reasonable dispersal on most days and the inland position reduces beneficial Atlantic trade wind coastal ventilation throughout the year.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
23.6/100
PM2.5 (fine particles):
Fair
23.6/100
PM10 (coarse particles):
Good
9.8/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
23.6/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
11.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Fair
33.8/100
PM2.5 (fine particles):
Fair
33.8/100
PM10 (coarse particles):
Good
13.8/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
25.0/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Fair
21.3/100
Pollen forecast in Cajazeiras
View pollen forecastFrequently Asked Questions
Is air quality bad in Cajazeiras right now?
On 16 July 2026, overall air quality in Cajazeiras is fair. AQI is the main air quality indicator at 23.6/100. Pollution peaks around 5:00 PM (PM2.5: 23.6/100).
Will air quality be worse tomorrow in Cajazeiras?
On 17 July 2026, air quality conditions in Cajazeiras will be similar to today, with AQI forecast at fair at 33.8/100. Pollution peaks around 11:00 PM (PM2.5: 33.8/100).
When is air pollution at its worst in Cajazeiras?
Cajazeiras residents notice reduced air quality mainly when native caatinga scrub and mandacaru cactus pollen peaks, and during spells of vehicle emissions from the BR-230 Transnordestina highway and surrounding cattle, cotton, and subsistence farming; conditions usually ease once the wet season or windier weather returns.
Are air quality levels in Cajazeiras 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.
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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