Worst air pollution Mexicali, today and tomorrow
Today (15 July): Air quality in Mexicali is fair. PM2.5 and O3 are fair; AQI and PM10 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (PM10: 43.2/100).
Tomorrow (16 July 2026): Air quality in Mexicali is fair. AQI worsens to fair; PM10 increases to fair; all other pollutants stay as today. Pollution peaks around 6:00 AM (PM10: 34.4/100). 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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Mexicali's air quality reflects the flat Baja California-Sonora Desert border position at 9 metres below sea level, with vehicle traffic on surrounding roads and the maquiladora manufacturing, agricultural, and international border crossing corridor generating elevated PM2.5. Windblown Colorado Desert dust contributes elevated PM10, while the extreme summer heat intensifies ozone formation and the flat desert basin's limited topographic dispersal under calm conditions maintains moderate to elevated border industrial corridor readings throughout the year.
Today - 15 July | Pollution peaks at 08:00
AQI:
Medium
43.2/100
PM2.5 (fine particles):
Fair
29.4/100
PM10 (coarse particles):
Medium
43.2/100
NO2 (nitrogen dioxide):
Good
3.0/100
O3 (ozone):
Fair
26.9/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
5.1/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 06:00
AQI:
Fair
34.4/100
PM2.5 (fine particles):
Fair
20.6/100
PM10 (coarse particles):
Fair
34.4/100
NO2 (nitrogen dioxide):
Good
4.2/100
O3 (ozone):
Fair
28.0/100
SO2 (sulfur dioxide):
Good
7.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
4.2/100
Pollen forecast in Mexicali
View pollen forecastFrequently Asked Questions
Is air quality bad in Mexicali right now?
On 15 July 2026, overall air quality in Mexicali is fair. PM2.5 is the main pollutant at 29.4/100. Pollution peaks around 8:00 AM (PM10: 43.2/100).
Will air quality be worse tomorrow in Mexicali?
On 16 July 2026, air quality conditions in Mexicali will be similar to today, with AQI forecast at fair at 34.4/100. Pollution peaks around 6:00 AM (PM10: 34.4/100).
When is air pollution at its worst in Mexicali?
In Mexicali, traffic on the surrounding roads, manufacturing activity, along with crop farming are the main local sources, with conditions worsening when dry, windy weather picks up. Dust carried on these winds adds substantially to particulate levels. Photochemical reactions in the heat push ozone levels higher.
Are air quality levels in Mexicali 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