Worst air pollution Chalco, today and tomorrow
Today (16 July): Air quality in Chalco is poor. AQI and PM10 are poor; PM2.5 is medium; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (PM10: 61.5/100).
Tomorrow (17 July 2026): Air quality in Chalco is poor. All pollutants stay as today. Pollution peaks around 4:00 AM (PM10: 62.7/100). 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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Chalco's air quality reflects Mexico City's southeastern metropolitan corridor in the Valley of Mexico at 2,250 metres adjacent to the desiccated Texcoco Lake basin, with vehicle traffic on surrounding roads and the dense urban residential and industrial corridor generating elevated PM2.5. The Valley of Mexico's near-complete topographic trapping compounds all emissions extensively, while the eastern lake bed dust contributes distinctive toxic saline aerosols and Chalco maintains moderate to elevated Mexico City southeastern metropolitan readings throughout most of the year.
Today - 16 July | Pollution peaks at 05:00
AQI:
Poor
61.5/100
PM2.5 (fine particles):
Medium
50.9/100
PM10 (coarse particles):
Poor
61.5/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
12.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 04:00
AQI:
Poor
62.7/100
PM2.5 (fine particles):
Medium
46.2/100
PM10 (coarse particles):
Poor
62.7/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
8.9/100
Frequently Asked Questions
Is air quality bad in Chalco right now?
On 16 July 2026, overall air quality in Chalco is poor. AQI is the main air quality indicator at 61.5/100. Pollution peaks around 5:00 AM (PM10: 61.5/100).
Will air quality be worse tomorrow in Chalco?
On 17 July 2026, air quality conditions in Chalco will be similar to today, with AQI forecast at poor at 62.7/100. Pollution peaks around 4:00 AM (PM10: 62.7/100).
When is air pollution at its worst in Chalco?
In Chalco, road traffic is the main local source, with conditions worsening when windblown dust events occur. These wind events can carry dust in from the surrounding arid landscape. These episodes tend to cluster in spring and autumn.
Are air quality levels in Chalco 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