Worst air pollution San Nicolás de los Garza, today and tomorrow
Today (15 August): Air quality in San Nicolás de los Garza is poor. AQI, PM2.5, and PM10 are poor; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (PM10: 72.6/100).
Tomorrow (16 August 2026): Air quality in San Nicolás de los Garza is medium. AQI improves to medium; PM2.5 decreases to medium; PM10 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 55.7/100). 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 Nicolás de los Garza's air quality reflects the greater Monterrey metropolitan area's northern industrial corridor in the Sierra Madre Oriental basin, with vehicle traffic on surrounding expressways and the steel, glass, and industrial corridor generating elevated industrial PM2.5. The extraordinary mountain enclosure creates severe winter inversions, while the Monterrey metropolitan industrial background maintains moderate to elevated northeastern Mexican mountain basin industrial readings throughout most of the year.
Today - 15 August | Pollution peaks at 01:00
AQI:
Poor
72.6/100
PM2.5 (fine particles):
Poor
60.7/100
PM10 (coarse particles):
Poor
72.6/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
19.2/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
15.0/100
Levels show the poorest local air quality during the day
Tomorrow - 16 August | Pollution peaks at 00:00
AQI:
Medium
55.7/100
PM2.5 (fine particles):
Medium
54.5/100
PM10 (coarse particles):
Medium
55.7/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Good
17.9/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
12.9/100
Frequently Asked Questions
Is air quality bad in San Nicolás de los Garza right now?
On 15 August 2026, overall air quality in San Nicolás de los Garza is poor. AQI is the main air quality indicator at 72.6/100. Pollution peaks around 1:00 AM (PM10: 72.6/100).
Will air quality be worse tomorrow in San Nicolás de los Garza?
On 16 August 2026, air quality conditions in San Nicolás de los Garza will be better than today, with AQI forecast at medium at 55.7/100. Pollution peaks around 12:00 AM (PM10: 55.7/100).
When is air pollution at its worst in San Nicolás de los Garza?
Air quality in San Nicolás de los Garza tends to be worse when vehicle traffic along with heavy industrial and chemical processing build up and temperature inversions set in over the valley. The bowl-like terrain here limits how quickly pollutants can escape. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in San Nicolás de los Garza 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: 15 August 2026 at 14:26 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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