Worst air pollution San Nicolás de los Garza, today and tomorrow
Today (16 July): Air quality in San Nicolás de los Garza is very poor. AQI and PM10 are very poor; PM2.5 is poor; O3 and PM1 are fair; NO2, SO2, CO, and HCHO are good. Pollution peaks around 8:00 PM (PM10: 100/100).
Tomorrow (17 July 2026): Air quality in San Nicolás de los Garza is very poor. PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 100/100). 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 - 16 July | Pollution peaks at 20:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Poor
77.6/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.6/100
O3 (ozone):
Fair
28.6/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
21.1/100
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
67.7/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Fair
26.0/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
17.2/100
Frequently Asked Questions
Is air quality bad in San Nicolás de los Garza right now?
On 16 July 2026, overall air quality in San Nicolás de los Garza is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 8:00 PM (PM10: 100/100).
Will air quality be worse tomorrow in San Nicolás de los Garza?
On 17 July 2026, air quality conditions in San Nicolás de los Garza 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 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.
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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