Raging wildfires in California forced 42,000 to evacuate and drove Reno residents indoors due to historically bad air quality

Firefighters battle flames during the Caldor Fire in Kyburz, California, on Saturday, Aug. 21.

(CNN)Health officials in Reno, Nevada, are warning residents to remain indoors as smoke from the Caldor Fire, burning east of Sacramento, California, has drifted across state lines and created historically bad air quality.

In California, more than 42,000 residents have been told to evacuate their homes as nine large wildfires burn in the northern part of the state. The most concerning of those is the Caldor Fire, which has burned 117,704 acres since sparking 10 days ago and is only 9% contained, according to Cal Fire.
A report from Cal Fire on Tuesday said 632 structures have been destroyed by flames and two people have been injured.
    More than 2,050 firefighting personnel have been assigned to the blaze, along with 19 helicopters, 211 engines, 48 hand crews and 51 dozers, the report said.
      The rash of fires in California prompted Gov. Gavin Newsom to request a major disaster declaration from President Joe Biden.
        If granted, the presidential major disaster declaration would pave the way to provide assistance for individuals impacted by the fires with housing, unemployment help and counseling, along with medical and legal services. Public assistance for repairs and replacement of schools, roads, utilities would also be included.