Here are some of the best things to do this week in San Diego, from Monday, Jan. 20 to Friday, Jan. 24. Check back Wednesday for our guide to things to do this weekend. MLK Day of Service: Hands on San Diego hosts community service events Jan. 20 and other days throughout the county to honor Martin Luther King Jr. Visit handsonsandiego.org/mlkday.

Six planets are set to align Tuesday evening, four of which will be visible to the naked eye, according to astronomers. NASA refers to this phenomenon as a planet parade, and there are a few good viewpoints here in San Diego County.

Starting Feb. 18, some user fees at county parks will see a modest increase, including those for camping, parking, fishing permits, boat rentals and sports facilities.

A new wildfire was reported today at 10:26 a.m. in San Diego County. Naval Fire has been burning on federal land managed by the U.S. Department of Defence. Currently, there is no data indicating the containment progress of the fire and its cause has not yet been determined.

Red flag warnings for potential wildfire danger will be in effect from 10 a.m. Monday to at least 10 p.m. Tuesday for the inland valley and mountain areas throughout the county, according to the National Weather Service.