Worst air pollution Ciudad López Mateos, today and tomorrow
Today (9 August): Air quality in Ciudad López Mateos is poor. AQI and PM10 are poor; PM2.5 is medium; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 PM (PM10: 71.4/100).
Tomorrow (10 August 2026): Air quality in Ciudad López Mateos is medium. AQI improves to medium; PM10 decreases to medium; all other pollutants stay as today. Pollution peaks around 10:00 PM (PM10: 56.1/100). 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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Ciudad López Mateos's air quality reflects Mexico City's northwestern metropolitan corridor at 2,255 metres in the Valley of Mexico, with vehicle traffic on surrounding roads and the manufacturing, residential, and commercial corridor generating elevated PM2.5 under persistent valley inversions. The enclosed Valley of Mexico's near-complete topographic trapping compounds emissions extensively, while the residential and industrial character maintains moderate to elevated Mexico City northwestern metropolitan corridor readings throughout most of the year.
Today - 9 August | Pollution peaks at 18:00
AQI:
Poor
71.4/100
PM2.5 (fine particles):
Medium
54.2/100
PM10 (coarse particles):
Poor
71.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
20.0/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
11.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 22:00
AQI:
Medium
56.1/100
PM2.5 (fine particles):
Medium
46.7/100
PM10 (coarse particles):
Medium
56.1/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Good
18.5/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
9.4/100
Frequently Asked Questions
Is air quality bad in Ciudad López Mateos right now?
On 9 August 2026, overall air quality in Ciudad López Mateos is poor. AQI is the main air quality indicator at 71.4/100. Pollution peaks around 6:00 PM (PM10: 71.4/100).
Will air quality be worse tomorrow in Ciudad López Mateos?
On 10 August 2026, air quality conditions in Ciudad López Mateos will be better than today, with AQI forecast at medium at 56.1/100. Pollution peaks around 10:00 PM (PM10: 56.1/100).
When is air pollution at its worst in Ciudad López Mateos?
The biggest local contributors to pollution in Ciudad López Mateos are road traffic and manufacturing activity, particularly once calm, stagnant conditions settle in the surrounding valley. The surrounding valley terrain holds pollutants near the surface rather than letting them disperse. Strong seasonal winds can lift dust from the surrounding dry terrain and push particulate levels sharply higher.
Are air quality levels in Ciudad López Mateos 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: 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.
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