Worst air pollution León de los Aldama, today and tomorrow
Today (16 July): Air quality in León de los Aldama 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 1:00 AM (PM10: 67.8/100).
Tomorrow (17 July 2026): Air quality in León de los Aldama is medium. AQI improves to medium; PM10 decreases to medium; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 4:00 AM (PM10: 52.5/100). 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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León de los Aldama's air quality reflects the flat Guanajuato Bajío plateau at 1,884 metres, with vehicle traffic on surrounding expressways and the shoe leather manufacturing — León being the world's shoe capital — tanning, and automotive corridor generating elevated chemical PM2.5 and VOCs from leather tanning. The elevated plateau position aids dispersal on most days, while winter inversions and the tanning industry's distinctive chemical emissions represent León's most locally unique air quality signature throughout most of the year.
Today - 16 July | Pollution peaks at 01:00
AQI:
Poor
67.8/100
PM2.5 (fine particles):
Medium
48.8/100
PM10 (coarse particles):
Poor
67.8/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
23.3/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
8.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 04:00
AQI:
Medium
52.5/100
PM2.5 (fine particles):
Medium
40.2/100
PM10 (coarse particles):
Medium
52.5/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
5.2/100
Frequently Asked Questions
Is air quality bad in León de los Aldama right now?
On 16 July 2026, overall air quality in León de los Aldama is poor. AQI is the main air quality indicator at 67.8/100. Pollution peaks around 1:00 AM (PM10: 67.8/100).
Will air quality be worse tomorrow in León de los Aldama?
On 17 July 2026, air quality conditions in León de los Aldama will be better than today, with AQI forecast at medium at 52.5/100. Pollution peaks around 4:00 AM (PM10: 52.5/100).
When is air pollution at its worst in León de los Aldama?
The biggest local contributors to pollution in León de los Aldama are traffic emissions, petrochemical and refining operations, as well as light manufacturing, particularly once windblown dust events occur. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher. This is most noticeable during spring and autumn wind events.
Are air quality levels in León de los Aldama 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.
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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