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• Daily Update

  Houston region hourly ozone data are provided by the Texas Commission on Environmental Quality (TCEQ). Ozone values are scaled to the standard air quality index colors. The “current” data are actually not quite real-time and are an average of the previous hour.

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• Air Quality Legend

  Dark Purple

  Hazardous

  Fuschia

  Very unhealthy

  Red

  Unhealthy

  Orange

  Uhealthy (For Sensitive Groups)

  Yellow

  Moderate

  Green

  Good

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