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EPA Warns Californians, Arizonans: Limit Outdoor Activities Due to Pollution

12/9/2025

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Story summary
  • On December 9, 2025, residents in northeast California and Casa Grande, Arizona were warned to limit outdoor activities from PM2.5 pollution.
  • The Environmental Protection Agency (EPA) advised sensitive groups to stay indoors.
  • The EPA urged the public to reduce exertion.
  • A wood burning ban operates in California's South Coast Air Basin, with exemptions for low-income homes.
  • Residents are urged to monitor air quality updates and reduce pollution.