League City residents should limit time outdoors Monday as high ozone levels and triple-digit heat push air quality to unhealthy levels for sensitive groups across the region.
The National Weather Service Houston/Galveston said on X that Monday, Aug. 31 is an Ozone Action Day for Houston, Galveston and surrounding areas, including League City. The agency said atmospheric conditions are expected to produce high levels of ozone pollution.
The alert covers all of Monday.
It marks the second straight Ozone Action Day for the area. The NWS issued the same designation for Sunday, Aug. 30.
Who is most at risk
Children under 18, adults 65 and older, and people with lung diseases such as asthma face the greatest risk from elevated ozone, according to the Texas Commission on Environmental Quality (TCEQ).
The NWS is also tracking a heat advisory for the region. Heat index values are expected to reach between 102 and 107 degrees, and the agency advises staying out of the sun between 10 a.m. and 6 p.m.
What residents can do
The NWS advises League City area residents to:
- Limit driving or carpool when possible
- Restrict outdoor exercise to early morning or late evening
- Walk or bike for short trips instead of driving
- Avoid drive-through lanes
- Conserve energy at home
The TCEQ, which issues Ozone Action Days for the Houston-Galveston-Brazoria area, also recommends keeping vehicles properly tuned to reduce emissions.
Residents can check current air quality conditions through the EPA's AirNow tool or at weather.gov/houston.
