Worst air pollution Las Piedras, today and tomorrow
Today (2 September): Air quality in Las Piedras is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 20.7/100).
Tomorrow (3 September 2026): Air quality in Las Piedras is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (O3: 17.4/100). 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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Las Piedras' air quality benefits from its Montevideo metropolitan eastern suburban position, with consistent Río de la Plata and Atlantic winds providing reliable ventilation. Vehicle traffic on the Ruta 8 and surrounding residential and light industrial character are the primary local sources, while the flat Uruguayan coastal plain and consistent southwesterly Pampas winds generally maintain moderate to good conditions throughout most of the year.
Today - 2 September | Pollution peaks at 04:00
AQI:
Fair
20.7/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
20.7/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.2/100
Levels show the poorest local air quality during the day
Tomorrow - 3 September | Pollution peaks at 00:00
AQI:
Good
17.4/100
PM2.5 (fine particles):
Good
9.4/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
17.4/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
1.3/100
Pollen forecast in Las Piedras
View pollen forecastFrequently Asked Questions
Is air quality bad in Las Piedras right now?
On 2 September 2026, overall air quality in Las Piedras is fair. AQI is the main air quality indicator at 20.7/100. Pollution peaks around 4:00 AM (O3: 20.7/100).
Will air quality be worse tomorrow in Las Piedras?
On 3 September 2026, air quality conditions in Las Piedras will be better than today, with AQI forecast at good at 17.4/100. Pollution peaks around 12:00 AM (O3: 17.4/100).
When is air pollution at its worst in Las Piedras?
People in Las Piedras tend to notice reduced air quality when introduced urban trees eucalyptus and native riverside vegetation pollen peaks, or because of vehicle traffic on the Ruta 8 and nearby residential and light industrial character; beyond that, the area's natural ventilation keeps air quality consistently favourable through the rest of the calendar year.
Are air quality levels in Las Piedras 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: 2 September 2026 at 16:08 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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