Worst air pollution San Nicolás de los Garza, today and tomorrow
Today (9 August): Air quality in San Nicolás de los Garza 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 4:00 AM (PM10: 78.2/100).
Tomorrow (10 August 2026): Air quality in San Nicolás de los Garza is very poor. AQI worsens to very poor; PM2.5 increases to poor; PM10 increases to very poor; all other pollutants stay as today. Pollution peaks around 11:00 PM (PM10: 86.5/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
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 - 9 August | Pollution peaks at 04:00
AQI:
Poor
78.2/100
PM2.5 (fine particles):
Medium
53.9/100
PM10 (coarse particles):
Poor
78.2/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
10.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Very poor
86.5/100
PM2.5 (fine particles):
Poor
60.7/100
PM10 (coarse particles):
Very poor
86.5/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
7.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
17.5/100
Frequently Asked Questions
Is air quality bad in San Nicolás de los Garza right now?
On 9 August 2026, overall air quality in San Nicolás de los Garza is poor. AQI is the main air quality indicator at 78.2/100. Pollution peaks around 4:00 AM (PM10: 78.2/100).
Will air quality be worse tomorrow in San Nicolás de los Garza?
On 10 August 2026, air quality conditions in San Nicolás de los Garza will be worse than today, with AQI forecast at very poor at 86.5/100. Pollution peaks around 11:00 PM (PM10: 86.5/100).
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.
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.