Worst air pollution Alfenas, today and tomorrow
Today (9 August): Air quality in Alfenas is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 PM (PM2.5: 36.5/100).
Tomorrow (10 August 2026): Air quality in Alfenas is fair. AQI improves to medium; PM2.5 decreases to medium; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 PM (PM2.5: 41.8/100). 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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Alfenas' air quality reflects the southern Minas Gerais plateau at 833 metres in the South de Minas coffee region, with vehicle emissions from the MG-179 and surrounding coffee, eucalyptus, and agribusiness operations contributing local sources. The elevated plateau position aids background dispersal, while dry season burning from surrounding Minas Gerais agricultural land contributes seasonal PM2.5 variation and the coffee processing operations add distinctive organic aerosol emissions during the harvest season.
Today - 9 August | Pollution peaks at 21:00
AQI:
Fair
36.5/100
PM2.5 (fine particles):
Fair
36.5/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
19.7/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
4.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 20:00
AQI:
Medium
41.8/100
PM2.5 (fine particles):
Medium
41.8/100
PM10 (coarse particles):
Fair
22.5/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
18.7/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.4/100
PM1 (ultrafine particles):
Good
5.8/100
Pollen forecast in Alfenas
View pollen forecastFrequently Asked Questions
Is air quality bad in Alfenas right now?
On 9 August 2026, overall air quality in Alfenas is fair. AQI is the main air quality indicator at 36.5/100. Pollution peaks around 9:00 PM (PM2.5: 36.5/100).
Will air quality be worse tomorrow in Alfenas?
On 10 August 2026, air quality conditions in Alfenas will be similar to today, with PM10 forecast at fair at 22.5/100. Pollution peaks around 8:00 PM (PM2.5: 41.8/100).
When is air pollution at its worst in Alfenas?
Reduced air quality in Alfenas is most likely when eucalyptus and native cerrado species pollen peaks, alongside periods of vehicle emissions from the MG-179 and surrounding coffee, eucalyptus, and agribusiness operations; things typically settle down again once the weather pattern shifts.
Are air quality levels in Alfenas 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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