In Spring, Summer, and Fall, the Observatory is normally open from 10:00 a.m. to 5:00 p.m. Everyday. On weekends from April through November, the gates open early at 8:30 a.m. During the winter months, December through March the  Observatory closes an hour earlier at 4:00 pm.

For current weather conditions on Mt. Wilson and forecasts go to

Weather Underground.

National Weather Service

GOES West Satellite Loop

Another great source of weather information specifically for astronomers on Mt. Wilson is

Clear Dark Skies. Go to their website to learn how to read their chart below.


To view the current camera images go to the HPWREN website here.

Roads to the Observatory:

Be aware of winter conditions in the mountains before driving up. After winter storms, like the one on Dec 5-6, the upper roads may have lingering patches of black ice, which can contribute to an accident, and recently did. This is especially true on Red Box Road from the Angeles Crest Highway (2) up to the Observatory. This road is on the north side of the mountain and often receives little sun to melt the ice. Please drive it with caution.

Angeles Crest Highway (CA2) from La Canada to Red Box Intersection — All Clear.


Red Box Road (from Angeles Crest Highway to Mount Wilson Observatory) — All Clear.

Observatory Status:

The Observatory is open every day of the regular season (March 31 to December 2) from 10:00 a.m. to 5:00 p.m., EXCEPT when snow, ice, or other hazards force a temporary closure. On the weekends, the gates open at 8:30 pm. Closures will be posted at the top of the home page.

Cosmic Cafe:

The Cafe is open for the season, until the beginning of December, when it will be open every Saturday and Sunday from 9:00 a.m. to 5:00 p.m. Check the Cosmic Cafe Facebook page here.

Additional Current Weather and Road-related Information:

The following sites provide weather forecast and condition information and the status of county and state roads that provide access to Mount Wilson Observatory: