Worst air pollution McAllen, today and tomorrow
Today (16 July): Air quality in McAllen is very poor. AQI, PM2.5, and PM10 are very poor; O3 and PM1 are fair; NO2, SO2, CO, and HCHO are good. Pollution peaks around 1:00 AM (PM10: 100/100).
Tomorrow (17 July 2026): Air quality in McAllen is very poor. PM2.5 decreases to poor; all other 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
Use our Strava plugin to check your own exposure.
McAllen's air quality reflects the lower Rio Grande Valley's binational air quality challenge, with agricultural burning from South Texas and northern Mexico, vehicle emissions from the busy US-Mexico border crossings, and pesticide application from the surrounding irrigation agriculture contributing to a complex mixture of PM2.5, ozone precursors, and chemical emissions across this rapidly growing border metropolitan area.
Today - 16 July | Pollution peaks at 01:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Very poor
81.8/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.7/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
23.1/100
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
79.2/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.5/100
O3 (ozone):
Fair
28.7/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
22.4/100
Pollen forecast in McAllen
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in McAllen
Frequently Asked Questions
Is air quality bad in McAllen right now?
On 16 July 2026, overall air quality in McAllen is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 1:00 AM (PM10: 100/100).
Will air quality be worse tomorrow in McAllen?
On 17 July 2026, air quality conditions in McAllen 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 McAllen?
Like most US cities, McAllen sees air quality shift from season to season. In short, the mildest, cleanest stretch typically falls in spring or autumn, whereas extended summer heat waves bring the year's worst ozone readings in the state's biggest metro areas. Gulf Coast humidity and inland heat can each add their own seasonal pollution patterns.
Are air quality levels in McAllen 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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