Worst air pollution Heroica Matamoros, today and tomorrow
Today (16 July): Air quality in Heroica Matamoros 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 9:00 PM (PM10: 100/100).
Tomorrow (17 July 2026): Air quality in Heroica Matamoros is very poor. All pollutants stay as today. Pollution peaks around 12:00 AM (PM10: 100/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Heroica Matamoros's air quality reflects the flat Tamaulipas Rio Grande delta border position adjacent to Brownsville Texas, with vehicle traffic on surrounding roads and the maquiladora manufacturing and international border crossing corridor generating elevated vehicle and industrial emissions. The Gulf of Mexico sea breezes provide warm-season ventilation, while the flat Gulf coastal terrain allows reasonable dispersal and the border crossing vehicle concentration represents the most distinctive local emission source throughout most of the year.
Today - 16 July | Pollution peaks at 21:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Poor
76.7/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
29.9/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
20.8/100
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
73.9/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
20.1/100
Pollen forecast in Heroica Matamoros
View pollen forecastFrequently Asked Questions
Is air quality bad in Heroica Matamoros right now?
On 16 July 2026, overall air quality in Heroica Matamoros is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 9:00 PM (PM10: 100/100).
Will air quality be worse tomorrow in Heroica Matamoros?
On 17 July 2026, air quality conditions in Heroica Matamoros 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 Heroica Matamoros?
The biggest local contributors to pollution in Heroica Matamoros are road traffic as well as textile and manufacturing operations, particularly once windblown dust events occur. Dust carried on these winds adds substantially to particulate levels. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Heroica Matamoros 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