Worst air pollution Saltillo, today and tomorrow
Today (16 July): Air quality in Saltillo is very poor. AQI, PM2.5, and PM10 are very poor; O3 and PM1 are fair; NO2, SO2, CO, and HCHO are good. Pollution peaks around 12:00 AM (PM10: 100/100).
Tomorrow (17 July 2026): Air quality in Saltillo is very poor. PM2.5 decreases to poor; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 100/100). 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
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Saltillo's air quality reflects the Coahuila northeastern plateau's Saltillo basin at 1,600 metres, with vehicle traffic on surrounding roads and the automotive manufacturing — Saltillo hosting major General Motors, Chrysler, and Kia plants — and steel corridor generating elevated automotive industrial emissions. The elevated plateau position aids dispersal on most days, while winter inversions create seasonal challenges and the automotive manufacturing character makes Saltillo Mexico's most distinctively automotive industry-defined northeastern plateau metropolitan environment throughout most of the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Very poor
85.8/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
1.2/100
O3 (ozone):
Fair
28.6/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
24.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Poor
75.3/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Fair
26.0/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
20.8/100
Frequently Asked Questions
Is air quality bad in Saltillo right now?
On 16 July 2026, overall air quality in Saltillo is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 12:00 AM (PM10: 100/100).
Will air quality be worse tomorrow in Saltillo?
On 17 July 2026, air quality conditions in Saltillo will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 12:00 AM (PM10: 100/100).
When is air pollution at its worst in Saltillo?
Pollution in Saltillo typically rises when road traffic, petrochemical and refining operations, along with light manufacturing combine, especially once temperature inversions set in over the valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. Dust carried on these winds adds substantially to particulate levels.
Are air quality levels in Saltillo 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