Worst air pollution Silao, today and tomorrow
Today (16 July): Air quality in Silao is poor. AQI and PM10 are poor; O3 is fair; PM2.5 is medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (PM10: 62.7/100).
Tomorrow (17 July 2026): Air quality in Silao is medium. AQI improves to medium; PM10 decreases to medium; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 AM (PM10: 51.1/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
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 - 16 July | Pollution peaks at 00:00
AQI:
Poor
62.7/100
PM2.5 (fine particles):
Medium
48.9/100
PM10 (coarse particles):
Poor
62.7/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
22.1/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
9.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 05:00
AQI:
Medium
51.1/100
PM2.5 (fine particles):
Medium
40.1/100
PM10 (coarse particles):
Medium
51.1/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
5.7/100
Frequently Asked Questions
Is air quality bad in Silao right now?
On 16 July 2026, overall air quality in Silao is poor. AQI is the main air quality indicator at 62.7/100. Pollution peaks around 12:00 AM (PM10: 62.7/100).
Will air quality be worse tomorrow in Silao?
On 17 July 2026, air quality conditions in Silao will be better than today, with AQI forecast at medium at 51.1/100. Pollution peaks around 5:00 AM (PM10: 51.1/100).
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.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app