A large warehouse fire in Tracy, California, has entered its third day, with officials warning residents about unhealthy air quality due to the blaze. The fire, which is affecting a roughly 1m sq ft warehouse owned by Medline Industries, a medical supplier, has prompted concerns about air quality in the area. Firefighters are continuing to battle the blaze. The situation is being described as challenging, with officials stating that they are struggling to contain the fire.

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