The Golden Gate Bridge is seen as a visitor stands at a vista point days after California Governor Gavin Newsom implemented a statewide "stay at home order" directing the state?s 40 million residents to stay in their homes in the face of the fast-spreading of coronavirus disease (COVID-19) in San Francisco, California, U.S. March 21, 2020. Image used for illustrative purpose.

A dog walker and a dog are seen at Bernal Heights Park under a smoke filled sky from various California wildfires in San Francisco, California, U.S., September 10, 2020.

The Golden Gate Bridge is seen in the background as a visitor stands in front of a welcome center two days after California Governor Gavin Newsom implemented a statewide "stay at home order" directing the states' 40 million residents to stay in their homes in the face of the fast-spreading of coronavirus disease (COVID-19) in San Francisco, California, U.S. March 21, 2020.

The Zuckerberg San Francisco General Hospital and Trauma Center is seen during sunrise as the Bay Bridge looms in the background, two days after California Governor Gavin Newsom implemented a statewide "stay at home order" directing the states' 40 million residents to stay in their homes in the face of the fast-spreading coronavirus disease (COVID-19) in San Francisco, California, U.S. March 21, 2020.

People are seen at Crissy Field under a smoke filled sky from California wildfires in San Francisco, California, U.S., September 10, 2020.

People are seen at Crissy Field two days after California Governor Gavin Newsom implemented a statewide "stay at home order" directing the state?s 40 million residents to stay in their homes in the face of the fast-spreading of coronavirus disease (COVID-19) in San Francisco, California, U.S. March 21, 2020.

The Golden Gate Bridge is seen under a smoke filled sky from California wildfires in San Francisco, California, U.S., September 10, 2020.

The Zuckerberg San Francisco General Hospital and Trauma Center is seen obscured under a smoke filled sky from various California wildfires in San Francisco, California, U.S., September 10, 2020.

Two pedestrians walk in Bernal Heights Park during sunrise, two days after California Governor Gavin Newsom implemented a statewide "stay at home order" directing the states' 40 million residents to stay in their homes in the face of the fast-spreading coronavirus disease (COVID-19) in San Francisco, California, U.S. March 21, 2020.

The Golden Gate Bridge is seen under a smoke filled sky from California wildfires in San Francisco, California, U.S., September 10, 2020.

A visitor enjoys the scenery at Pier 41 under a smoke filled sky from various California wildfires in San Francisco, California, U.S., September 10, 2020.

People enjoy the scenery at Pier 41 during day one of the citywide shelter in place order amid the COVID-19 novel coronavirus outbreak in San Francisco, California, U.S. March 17, 2020.