Worst air pollution Piracicaba, today and tomorrow
Today (9 August): Air quality in Piracicaba is fair. AQI, PM2.5, and O3 are fair; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (PM2.5: 20.5/100).
Tomorrow (10 August 2026): Air quality in Piracicaba is fair. O3 decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 AM (PM2.5: 30.0/100). Airmine updates local air quality forecasts four times daily.
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Piracicaba's air quality reflects its position in the São Paulo state sugarcane belt on the Piracicaba river, with vehicle emissions from the SP-304 corridor combining with seasonal sugarcane burning that historically generated significant PM2.5 episodes. Mechanised harvesting has reduced but not eliminated the burning contribution, while the river valley topography can concentrate vehicle and industrial emissions under calm conditions in this mid-sized interior São Paulo city.
Today - 9 August | Pollution peaks at 18:00
AQI:
Fair
20.5/100
PM2.5 (fine particles):
Fair
20.5/100
PM10 (coarse particles):
Good
9.5/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
20.1/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
2.6/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
30.0/100
PM2.5 (fine particles):
Fair
30.0/100
PM10 (coarse particles):
Good
14.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.9/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
3.3/100
Pollen forecast in Piracicaba
View pollen forecastFrequently Asked Questions
Is air quality bad in Piracicaba right now?
On 9 August 2026, overall air quality in Piracicaba is fair. AQI is the main air quality indicator at 20.5/100. Pollution peaks around 6:00 PM (PM2.5: 20.5/100).
Will air quality be worse tomorrow in Piracicaba?
On 10 August 2026, air quality conditions in Piracicaba will be similar to today, with AQI forecast at fair at 30.0/100. Pollution peaks around 8:00 AM (PM2.5: 30.0/100).
When is air pollution at its worst in Piracicaba?
The most noticeable dips in Piracicaba's air quality come when eucalyptus and native cerrado remnants pollen peaks, or because of vehicle emissions from the SP-304 corridor; background levels usually settle back down once the season changes.
Are air quality levels in Piracicaba 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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