Worst air pollution Brownsville, today and tomorrow
Today (16 July): Air quality in Brownsville 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 Brownsville 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.
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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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Brownsville's air quality reflects the lower Rio Grande Valley's binational challenge at the southern tip of Texas, with vehicle and agricultural emissions from the Mexico-US border crossing, intensive South Texas irrigation agriculture, and the Port of Brownsville's industrial and LNG export operations contributing a complex mixture of PM2.5, ozone precursors, and industrial emissions. Gulf of Mexico southeasterly breezes generally provide coastal ventilation, while cross-border agricultural burning from Tamaulipas contributes seasonal PM2.5 episodes.
Today - 16 July | Pollution peaks at 21:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Poor
78.5/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
29.9/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
21.5/100
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
75.6/100
PM10 (coarse particles):
Very poor
100/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Fair
20.8/100
Pollen forecast in Brownsville
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Brownsville
Frequently Asked Questions
Is air quality bad in Brownsville right now?
On 16 July 2026, overall air quality in Brownsville 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 Brownsville?
On 17 July 2026, air quality conditions in Brownsville 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 Brownsville?
Brownsville's air quality has a clear seasonal rhythm. In short, the cleanest air usually comes in the milder shoulder seasons of spring and autumn, whereas extended summer heat waves bring the year's worst ozone readings in the state's biggest metro areas. Dust from West Texas can occasionally drift across the state and add to particulate levels.
Are air quality levels in Brownsville 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