Weather
Houston Air Quality Alert: Ozone Risk Rises Wednesday
Houston, Texas – High ozone levels could affect the Houston Galveston area Wednesday, prompting an Ozone Action Day and precautions for sensitive groups.
By Erin Vale · 2026-09-22T21:53:04.952Z
Houston, Texas – High ozone levels could affect the Houston Galveston area Wednesday, prompting an Ozone Action Day and precautions for sensitive groups.
According to the National Weather Service Houston Galveston office, atmospheric conditions are expected to support high ozone pollution levels around Houston, Galveston and surrounding areas through Wednesday evening.
The Air Quality Alert identifies people in sensitive groups as facing the greatest health concern. Residents in those groups should consider limiting outdoor activities to the early or late part of the day when possible.
The alert covers the Houston Galveston metropolitan area and surrounding communities. Unlike hazards caused by thunderstorms or heavy rain, elevated ozone can occur even when skies appear relatively clear, making air quality information important for residents planning time outside.
People who need to exercise, work or spend extended periods outdoors should consider adjusting their schedules to reduce exposure during the day. The NWS also encourages residents to limit driving or carpool when practical, which can help reduce emissions that contribute to ozone pollution.
Residents can monitor local air quality information and adjust outdoor plans as conditions change, particularly if they belong to a group sensitive to elevated ozone.
The Ozone Action Day continues through Wednesday evening. Sensitive groups should prioritize outdoor activities during the early or late day and check updated air quality information before spending prolonged periods outside.