Worst air pollution Catu, today and tomorrow
Today (16 July): Air quality in Catu is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 23.7/100).
Tomorrow (17 July 2026): Air quality in Catu is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 24.5/100). 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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Catu's air quality reflects the Bahia Recôncavo petroleum zone, with the Petrobras RLAM Landulpho Alves refinery nearby — one of Brazil's largest — and surrounding petroleum extraction operations generating elevated industrial SO₂, benzene, and PM2.5 alongside vehicle traffic on the BA-093. Atlantic trade winds from the Bahia coast provide background ventilation, while the refinery's proximity makes Catu one of northeastern Brazil's more industrially influenced suburban environments throughout the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Fair
23.7/100
PM2.5 (fine particles):
Good
10.0/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
23.7/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Fair
24.5/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
24.5/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
6.8/100
Pollen forecast in Catu
View pollen forecastFrequently Asked Questions
Is air quality bad in Catu right now?
On 16 July 2026, overall air quality in Catu is fair. AQI is the main air quality indicator at 23.7/100. Pollution peaks around 11:00 PM (O3: 23.7/100).
Will air quality be worse tomorrow in Catu?
On 17 July 2026, air quality conditions in Catu will be similar to today, with AQI forecast at fair at 24.5/100. Pollution peaks around 11:00 PM (O3: 24.5/100).
When is air pollution at its worst in Catu?
Air quality dips in Catu mostly track native Atlantic Forest remnants and eucalyptus pollen peaks and periods of the Petrobras RLAM Landulpho Alves refinery nearby — one of Brazil's largest — and surrounding petroleum; wind and rain both help clear the air fairly quickly here.
Are air quality levels in Catu 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