Worst air pollution Maricá, today and tomorrow
Today (20 September): Air quality in Maricá is moderate. AQI and PM2.5 are moderate; PM10 and PM1 are fair; NO2, O3, SO2, CO, and HCHO are good. Pollution peaks around 9:00 AM (PM2.5: 41.3/100).
Tomorrow (21 September 2026): Air quality in Maricá is fair. AQI improves to fair; PM2.5 decreases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM2.5: 37.3/100). 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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Maricá's air quality benefits from its Rio de Janeiro state coastal position on the Maricá Lagoon complex, with consistent Atlantic sea breezes providing reliable maritime ventilation along this rapidly urbanising coastal municipality. Vehicle emissions from the RJ-106 and growing residential and oil industry support development are the primary local sources, while the Petrobras pre-salt oil industry expansion in the region adds emerging industrial emissions alongside the primary coastal tourism character.
Today - 20 September | Pollution peaks at 09:00
AQI:
Moderate
41.3/100
PM2.5 (fine particles):
Moderate
41.3/100
PM10 (coarse particles):
Fair
36.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
7.4/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.3/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Fair
22.0/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 00:00
AQI:
Fair
37.3/100
PM2.5 (fine particles):
Fair
37.3/100
PM10 (coarse particles):
Fair
28.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
7.4/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.3/100
HCHO (formaldehyde):
Good
0.5/100
PM1 (ultrafine particles):
Good
16.7/100
Pollen forecast in Maricá
View pollen forecastFrequently Asked Questions
Is air quality bad in Maricá right now?
On 20 September 2026, overall air quality in Maricá is moderate. AQI is the main air quality indicator at 41.3/100. Pollution peaks around 9:00 AM (PM2.5: 41.3/100).
Will air quality be worse tomorrow in Maricá?
On 21 September 2026, air quality conditions in Maricá will be better than today, with AQI forecast at fair at 37.3/100. Pollution peaks around 12:00 AM (PM2.5: 37.3/100).
When is air pollution at its worst in Maricá?
Reduced air quality in Maricá is most likely when native Atlantic Forest remnants and lagoon-edge vegetation pollen peaks, alongside periods of vehicle emissions from the RJ-106 and growing residential and oil industry support development; outside those spells, this remains one of the more consistently clean-air places to be.
Are air quality levels in Maricá 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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