Harris County Public Health & Environmental Services (HCPHES) is issuing an "Air Quality Warning/Health Advisory" for the Harris County area. LEVEL RED Ozone has been reached at the LaPorte and Deer Park monitoring sites in East Harris County and may be reached at additional sites. LEVEL RED ozone means that the ozone concentrations exceed 125 parts per billion (ppb). Ozone at this level may have harmful health effects.

LEVEL RED means that the air quality is considered "Unhealthy" for all groups. HCPHES recommends that people avoid prolonged outdoor exertion during LEVEL RED Ozone conditions. High ozone levels usually occur during daylight hours between 11:00 a.m. and 7:00 p.m. High ozone is usually short-lived and may impact various locations for a few hours.