Worst air pollution San Luis Potosí, today and tomorrow
Today (9 August): Air quality in San Luis Potosí is fair. O3 is fair; AQI, PM2.5, and PM10 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 PM (PM10: 52.2/100).
Tomorrow (10 August 2026): Air quality in San Luis Potosí is fair. All pollutants stay as today. Pollution peaks around 4:00 AM (PM10: 53.2/100). 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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San Luis Potosí's air quality reflects the flat central Mexican plateau at 1,877 metres in the San Luis Potosí valley, with vehicle traffic on surrounding roads and the automotive manufacturing — San Luis Potosí hosting major BMW plant — and mining corridor generating elevated industrial emissions. The elevated plateau position aids dispersal on most days, while winter inversions create seasonal challenges and the automotive manufacturing character creates a distinctive industrial emission profile throughout most of the year.
Today - 9 August | Pollution peaks at 20:00
AQI:
Medium
52.2/100
PM2.5 (fine particles):
Medium
45.5/100
PM10 (coarse particles):
Medium
52.2/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
22.0/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
7.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 04:00
AQI:
Medium
53.2/100
PM2.5 (fine particles):
Medium
46.3/100
PM10 (coarse particles):
Medium
53.2/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
28.7/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
10.0/100
Frequently Asked Questions
Is air quality bad in San Luis Potosí right now?
On 9 August 2026, overall air quality in San Luis Potosí is fair. O3 is the main pollutant at 22.0/100. Pollution peaks around 8:00 PM (PM10: 52.2/100).
Will air quality be worse tomorrow in San Luis Potosí?
On 10 August 2026, air quality conditions in San Luis Potosí will be similar to today, with O3 forecast at fair at 28.7/100. Pollution peaks around 4:00 AM (PM10: 53.2/100).
When is air pollution at its worst in San Luis Potosí?
San Luis Potosí usually sees its poorest air quality when road traffic, quarrying activity, as well as manufacturing activity coincide with periods when temperature inversions set in over the valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in San Luis Potosí 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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