The Oakland Raiders changed Friday's regularly scheduled outdoor practice to a walkthrough because of poor air quality for a second straight day, NFL Network's Steve Wyche reported.
Football operations for teams based in the Bay Area and Los Angeles, however, have taken a back seat to real life in the past week, as areas of California have been devastated by wildfires.
Southern California dealt with the Woolsey Fire, while Northern California experienced damage with the Camp Fire.
Smoke over the Bay Area caused the Air Quality Index (AQI) to register more than 200, which indicates a "very unhealthy" rating, according to a graph tweeted by Michael Gehlken of the Las Vegas Review-Journal.
As of Friday afternoon, the death toll rose to 66 with more than 600 people missing, according to CBS News.
Meanwhile, fires in Southern California continue burn and the Los Angeles Chargers have stepped in to assist relief efforts by donating $250,000 to the American Red Cross.
The funding will enable the Red Cross to send disaster workers and supplies to the affected areas to help shelter, feed and comfort people who have been impacted by the Woolsey and Hill wildfires.
"It's been absolutely heartbreaking to watch the destruction these fires have inflicted on our local community," said A.G. Spanos, President of Business Operations for the Los Angeles Chargers, in a statement. "Forcing more than a quarter million residents to evacuate and seek safety and shelter elsewhere, this disaster has seen hundreds of families lose their homes and have their lives turned upside down. The Chargers are proud to partner with the Red Cross to provide shelter, food, health services and immediate support to Angelenos with nowhere else to turn in the face of this widespread devastation."