Worst air pollution Rosario, today and tomorrow
Today (9 August): Air quality in Rosario is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 18.2/100).
Tomorrow (10 August 2026): Air quality in Rosario is good. All pollutants stay as today. Pollution peaks around 4:00 AM (O3: 18.4/100). 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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Rosario's air quality reflects the flat Paraná River valley position in the Argentine Pampa Húmeda, with vehicle traffic on the Circunvalación and the surrounding grain processing, soybean export, and petrochemical corridor on the Paraná waterway contributing local sources. Consistent southwesterly Pampas winds generally allow good dispersal, while the Paraná River provides ventilation and Rosario's grain export port operations' dust and the petrochemical corridor represent the most distinctive local industrial emission sources throughout the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Good
18.2/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.2/100
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 - 10 August | Pollution peaks at 04:00
AQI:
Good
18.4/100
PM2.5 (fine particles):
Good
16.2/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.3/100
PM1 (ultrafine particles):
Good
2.0/100
Pollen forecast in Rosario
View pollen forecastFrequently Asked Questions
Is air quality bad in Rosario right now?
On 9 August 2026, overall air quality in Rosario is good. AQI is the main air quality indicator at 18.2/100. Pollution peaks around 11:00 PM (O3: 18.2/100).
Will air quality be worse tomorrow in Rosario?
On 10 August 2026, air quality conditions in Rosario will be similar to today, with AQI forecast at good at 18.4/100. Pollution peaks around 4:00 AM (O3: 18.4/100).
When is air pollution at its worst in Rosario?
In Rosario, traffic on the surrounding roads, heavy industrial and chemical processing, together with fishing fleet activity are the main local sources, with conditions worsening when dry spells bring strong winds. Dust carried on these winds adds substantially to particulate levels. These episodes tend to cluster in spring and autumn.
Are air quality levels in Rosario 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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