Worst air pollution Nicolás Romero, today and tomorrow
Today (16 July): Air quality in Nicolás Romero is medium. AQI, PM2.5, and PM10 are medium; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (PM10: 51.1/100).
Tomorrow (17 July 2026): Air quality in Nicolás Romero is medium. All pollutants stay as today. Pollution peaks around 4:00 AM (PM10: 54.5/100). 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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Nicolás Romero's air quality reflects Mexico City's northwestern metropolitan corridor in the Valley of Mexico, with vehicle traffic on surrounding roads and the industrial, residential, and manufacturing character contributing local sources under the valley's persistent inversions. The enclosed Valley of Mexico's topographic trapping compounds emissions extensively, while the industrial character maintains moderate to elevated Mexico City northwestern metropolitan corridor readings throughout most of the year.
Today - 16 July | Pollution peaks at 05:00
AQI:
Medium
51.1/100
PM2.5 (fine particles):
Medium
47.5/100
PM10 (coarse particles):
Medium
51.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.9/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
9.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 04:00
AQI:
Medium
54.5/100
PM2.5 (fine particles):
Medium
42.6/100
PM10 (coarse particles):
Medium
54.5/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
19.2/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
6.5/100
Frequently Asked Questions
Is air quality bad in Nicolás Romero right now?
On 16 July 2026, overall air quality in Nicolás Romero is medium. AQI is the main air quality indicator at 51.1/100. Pollution peaks around 5:00 AM (PM10: 51.1/100).
Will air quality be worse tomorrow in Nicolás Romero?
On 17 July 2026, air quality conditions in Nicolás Romero will be similar to today, with AQI forecast at medium at 54.5/100. Pollution peaks around 4:00 AM (PM10: 54.5/100).
When is air pollution at its worst in Nicolás Romero?
In Nicolás Romero, vehicle traffic as well as manufacturing and food processing are the main local sources, with conditions worsening when the surrounding valley traps air close to the ground. The bowl-like terrain here limits how quickly pollutants can escape. Dust carried on these winds adds substantially to particulate levels.
Are air quality levels in Nicolás Romero 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