Galveston and the upper Texas coast are expected to see hotter, drier conditions and incoming Saharan dust, which could lead to hazy skies and declining air quality in the coming days.
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A surge of Saharan dust combined with persistent summer heat is expected to affect Galveston and the upper Texas Gulf Coast this week, raising the potential for hazy skies and declining air quality. Forecasters say a strong dome of high pressure will remain parked over Southeast Texas through the weekend, pushing daytime temperatures into the 90s while limiting rain and cloud cover across coastal communities, including Galveston Island.
That same pattern is allowing dust from the Sahara Desert to move across the Atlantic and into the Gulf Coast region. A modest plume is expected later this week, with a larger surge projected to reach Texas by early next week.
For coastal residents, the dust may appear as a milky or hazy sky, particularly at sunrise and sunset. While Saharan dust can sometimes suppress tropical activity in the Gulf, it can also contribute to reduced air quality when combined with local emissions.
Under hot, dry, and calm conditions, pollutants such as ozone and fine particles can settle closer to the ground. When that happens, the Texas Commission on Environmental Quality may issue an ozone pollution watch, also known as an air quality alert, for coastal counties including Galveston, Harris, and Brazoria.
“It’s on hot, dry, and calm summer days when the air quality can dip into unhealthy levels,” officials have said in prior advisories.
Recent smoke events have added to air quality concerns. Earlier this week, a large fire in the Houston area sent smoke drifting across parts of Southeast Texas, while additional haze has been linked to wildfires burning in Mexico and the western United States.
Even so, humidity levels along the coast should stay somewhat lower than typical for late June. Meteorologists say slightly reduced moisture levels could keep heat index values from reaching advisory thresholds, despite the ongoing heat.
The current weather pattern is expected to hold steady, with mostly sunny skies, limited chances of rain, and overnight lows in the 70s across the Gulf Coast.
Officials encourage residents, especially those with asthma or other respiratory conditions, to monitor air quality forecasts and limit prolonged outdoor activity if conditions worsen.
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