As the Sayre Fire rages on, Santa Clarita city officials remain on high alert and in constant communication with fire and public safety officials through the Emergency Operation Center at City Hall.

"We are constantly monitoring this 24/7," said Gail Ortiz, city spokeswoman, adding that the city wants local residents to be on "heightened alert."

The poor air quality and any traffic delays remained major concerns on Monday.

"We're dealing mostly with smoke," she said. "Today's all about the unhealthful air."

Metrolink service in the Santa Clarita Valley was up and running Monday. Service was down throughout the weekend.

Flames and smoke are visible in Placerita Canyon, which has concerned some local residents, Ortiz said.

"People are still remembering last year, the Buckweed fire and how fast that happened," Ortiz said.

Still, Santa Clarita is safe from any fires so far, she said.

"It's burning well away from homes and the fire department is encouraged by the lack of winds," she said about the Placerita Canyon fire. "Things are looking pretty good for the city."

However, things could change instantly depending on any changes in the wind, she said.