Worst air pollution Zacatecas, today and tomorrow
Today (9 August): Air quality in Zacatecas 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: 75.0/100).
Tomorrow (10 August 2026): Air quality in Zacatecas is poor. PM2.5 increases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM10: 77.1/100). 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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Zacatecas's air quality reflects the historic silver mining highland's enclosed canyon at 2,496 metres, with vehicle traffic on surrounding roads and the silver mining legacy, government, and tourism corridor contributing local sources. The canyon's dramatic topographic enclosure creates concentration under inversions, while the elevated altitude worsens ozone formation and Zacatecas's extraordinary historic silver mining UNESCO colonial setting creates a distinctive local air quality environment throughout most of the year.
Today - 9 August | Pollution peaks at 00:00
AQI:
Poor
75.0/100
PM2.5 (fine particles):
Medium
59.1/100
PM10 (coarse particles):
Poor
75.0/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
23.0/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
14.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 22:00
AQI:
Poor
77.1/100
PM2.5 (fine particles):
Poor
62.7/100
PM10 (coarse particles):
Poor
77.1/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
27.2/100
SO2 (sulfur dioxide):
Good
11.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
20.5/100
Frequently Asked Questions
Is air quality bad in Zacatecas right now?
On 9 August 2026, overall air quality in Zacatecas is poor. AQI is the main air quality indicator at 75.0/100. Pollution peaks around 12:00 AM (PM10: 75.0/100).
Will air quality be worse tomorrow in Zacatecas?
On 10 August 2026, air quality conditions in Zacatecas will be similar to today, with AQI forecast at poor at 77.1/100. Pollution peaks around 10:00 PM (PM10: 77.1/100).
When is air pollution at its worst in Zacatecas?
Air quality in Zacatecas tends to be worse when traffic on the surrounding roads, mining operations, as well as tourism-related traffic build up and summer heat and strong sunlight build up. Heat and sunlight combine with emissions to form ozone at ground level. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Zacatecas 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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