Worst air pollution Caxias, today and tomorrow
Today (16 July): Air quality in Caxias is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 AM (O3: 22.0/100).
Tomorrow (17 July 2026): Air quality in Caxias is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (O3: 24.2/100). 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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Caxias's air quality reflects its position in the Baixada Fluminense industrial corridor of Rio de Janeiro state, with vehicle emissions from the BR-040 and the surrounding Duque de Caxias petroleum refinery and chemical complex generating elevated SO₂, benzene, and industrial PM2.5. The Guanabara Bay basin's enclosed topography and the surrounding Serra dos Órgãos ridgeline create severe topographic concentration of industrial and vehicle emissions, making the Baixada Fluminense one of Rio de Janeiro state's most persistently polluted metropolitan corridors throughout the year.
Today - 16 July | Pollution peaks at 03:00
AQI:
Fair
22.0/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
22.0/100
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
24.2/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
5.6/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
24.2/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.6/100
PM1 (ultrafine particles):
Good
9.6/100
Pollen forecast in Caxias
View pollen forecastFrequently Asked Questions
Is air quality bad in Caxias right now?
On 16 July 2026, overall air quality in Caxias is fair. AQI is the main air quality indicator at 22.0/100. Pollution peaks around 3:00 AM (O3: 22.0/100).
Will air quality be worse tomorrow in Caxias?
On 17 July 2026, air quality conditions in Caxias will be similar to today, with AQI forecast at fair at 24.2/100. Pollution peaks around 11:00 PM (O3: 24.2/100).
When is air pollution at its worst in Caxias?
The most noticeable dips in Caxias's air quality come when native caatinga scrub and babaçu palm pollen peaks, or because of vehicle emissions from the BR-040 and the surrounding Duque de Caxias petroleum refinery and chemical complex; a change of season or a spell of wind usually clears things up again.
Are air quality levels in Caxias 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