Worst air pollution Silao, today and tomorrow
Today (9 August): Air quality in Silao is poor. AQI and PM10 are poor; PM2.5 is medium; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (PM10: 65.2/100).
Tomorrow (10 August 2026): Air quality in Silao is poor. All pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 68.1/100). 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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Silao's air quality reflects the flat Guanajuato Bajío plateau at 1,724 metres adjacent to the Silao-Guanajuato International Airport, with vehicle traffic on surrounding roads and the General Motors and BMW automotive manufacturing and aviation operations generating elevated automotive industrial and NOₓ emissions. The elevated plateau position aids dispersal on most days, while the automotive manufacturing character makes Silao one of Mexico's most distinctively foreign automotive industry-defined metropolitan environments throughout most of the year.
Today - 9 August | Pollution peaks at 23:00
AQI:
Poor
65.2/100
PM2.5 (fine particles):
Medium
51.2/100
PM10 (coarse particles):
Poor
65.2/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
20.0/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.3/100
PM1 (ultrafine particles):
Good
10.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Poor
68.1/100
PM2.5 (fine particles):
Medium
53.5/100
PM10 (coarse particles):
Poor
68.1/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
18.2/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
11.3/100
Frequently Asked Questions
Is air quality bad in Silao right now?
On 9 August 2026, overall air quality in Silao is poor. AQI is the main air quality indicator at 65.2/100. Pollution peaks around 11:00 PM (PM10: 65.2/100).
Will air quality be worse tomorrow in Silao?
On 10 August 2026, air quality conditions in Silao will be similar to today, with AQI forecast at poor at 68.1/100. Pollution peaks around 12:00 AM (PM10: 68.1/100).
When is air pollution at its worst in Silao?
In Silao, traffic emissions, aircraft operations at the local air base, and light manufacturing are the main local sources, with conditions worsening when dry, windy weather picks up. These wind events can carry dust in from the surrounding arid landscape. This is most noticeable during spring and autumn wind events.
Are air quality levels in Silao 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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