Worst air pollution Cachoeiras de Macacu, today and tomorrow
Today (16 July): Air quality in Cachoeiras de Macacu is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 16.0/100).
Tomorrow (17 July 2026): Air quality in Cachoeiras de Macacu is good. All pollutants stay as today. Pollution peaks around 6:00 PM (O3: 16.9/100). 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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Cachoeiras de Macacu's air quality reflects the Rio de Janeiro state Serra dos Órgãos mountain valley, with vehicle emissions from the RJ-116 and surrounding eucalyptus farming, light manufacturing, and the Guanabara Bay water catchment operations contributing local sources. The surrounding Atlantic Forest mountains create dramatic topographic variation and the forested watershed generally maintains clean mountain air in the upper valley areas, while the valley floor concentrates emissions under calm conditions throughout the year.
Today - 16 July | Pollution peaks at 23:00
AQI:
Good
16.0/100
PM2.5 (fine particles):
Good
7.8/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
16.0/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Good
16.9/100
PM2.5 (fine particles):
Good
7.9/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Good
16.9/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
1.9/100
Pollen forecast in Cachoeiras de Macacu
View pollen forecastFrequently Asked Questions
Is air quality bad in Cachoeiras de Macacu right now?
On 16 July 2026, overall air quality in Cachoeiras de Macacu is good. AQI is the main air quality indicator at 16.0/100. Pollution peaks around 11:00 PM (O3: 16.0/100).
Will air quality be worse tomorrow in Cachoeiras de Macacu?
On 17 July 2026, air quality conditions in Cachoeiras de Macacu will be similar to today, with AQI forecast at good at 16.9/100. Pollution peaks around 6:00 PM (O3: 16.9/100).
When is air pollution at its worst in Cachoeiras de Macacu?
In Cachoeiras de Macacu, reduced air quality is most noticeable when native Atlantic Forest remnants and the Macacu River corridor vegetation pollen peaks, and on days affected by vehicle emissions from the RJ-116 and surrounding eucalyptus farming, light manufacturing; the rest of the calendar year is generally more forgiving for air quality.
Are air quality levels in Cachoeiras de Macacu 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