Worst air pollution Ribeirão Prêto, today and tomorrow
Today (9 August): Air quality in Ribeirão Prêto is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (PM2.5: 28.7/100).
Tomorrow (10 August 2026): Air quality in Ribeirão Prêto is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (PM2.5: 39.5/100). Airmine updates local air quality forecasts four times daily.
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Ribeirão Prêto's air quality reflects its position as one of São Paulo state's major agribusiness capitals in the interior Canaã plateau, with vehicle emissions from the growing metropolitan area combining with seasonal sugarcane burning from the surrounding sugarcane belt that historically generated some of Brazil's most severe agricultural burning episodes. Mechanised harvesting has reduced but not eliminated the seasonal burning contribution.
Today - 9 August | Pollution peaks at 22:00
AQI:
Fair
28.7/100
PM2.5 (fine particles):
Fair
28.7/100
PM10 (coarse particles):
Good
13.7/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
19.5/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Fair
39.5/100
PM2.5 (fine particles):
Fair
39.5/100
PM10 (coarse particles):
Good
19.2/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
18.9/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
4.9/100
Pollen forecast in Ribeirão Prêto
View pollen forecastFrequently Asked Questions
Is air quality bad in Ribeirão Prêto right now?
On 9 August 2026, overall air quality in Ribeirão Prêto is fair. AQI is the main air quality indicator at 28.7/100. Pollution peaks around 10:00 PM (PM2.5: 28.7/100).
Will air quality be worse tomorrow in Ribeirão Prêto?
On 10 August 2026, air quality conditions in Ribeirão Prêto will be similar to today, with AQI forecast at fair at 39.5/100. Pollution peaks around 5:00 PM (PM2.5: 39.5/100).
When is air pollution at its worst in Ribeirão Prêto?
People in Ribeirão Prêto tend to notice reduced air quality when eucalyptus and native Cerrado species pollen peaks, or because of vehicle emissions from the growing metropolitan area; conditions generally improve once the season shifts and rainfall or stronger winds return.
Are air quality levels in Ribeirão Prêto 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: 9 August 2026 at 20:27 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.
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