TONIGHT IN SAN JOSE, CA · MONDAY, AUGUST 31 · SUNSET 7:37 PM
A good night to spot the Moon.
Climbs highest around 4:17 AM if you're still up.
Tonight's sky in San Jose is headlined by the Moon: a Good night, with the waning gibbous Moon 82% lit and best around 10:57 PM local time, under 22% forecast cloud cover. Saturn, Mars and more are also up tonight. Every time and percentage here is computed for San Jose's exact coordinates and tonight's forecast.
See the Moon’s full night →WANING GIBBOUS · 82% LIT · SETS 11:28 AM
best window · waning gibbous, 82% lit
Good night to look: skies are partly cloudy, but it sits low; find a spot with an open horizon.
- Partly cloudy (22%)
- Low in the sky (18° up)
- Altitude69° · High in sky
- Moon phase82% lit · waning gibbous
- Cloud cover22% · Partly cloudy
- Sky darknessBortle 9 · Inner-city sky
What else is up tonight
The nights ahead
≈ marks a lower-confidence forecast; check back closer to the night.
Common questions
When exactly should I look tonight?
The Moon is best around 10:57 PM local time tonight, 82% lit with 22% cloud cover forecast at that hour. It climbs a little higher later, around 4:17 AM.
What else is visible tonight from San Jose?
Beyond the Moon: Saturn (best 10:57 PM · 21° up in the ESE), Mars (best 5:37 AM · 40° up in the E), Jupiter (best 5:57 AM · 16° up in the E), Venus (best 7:37 PM · 17° up in the WSW). Times and directions are computed for San Jose, CA.
Do I need a telescope for tonight's sky?
No. The Moon, the bright planets and ISS passes are all naked-eye objects. Binoculars or a small telescope add detail but are never required.
Will clouds get in the way tonight in San Jose?
Forecast says 22% cloud cover at the Moon's best time (43% average across the night). Look for gaps: objects reappear the moment the cloud breaks.
How dark is San Jose's night sky?
San Jose's city-center sky rates about Bortle 9 of 9 (inner-city sky). Bright inner-city sky: expect only the Moon, planets, and a handful of the very brightest stars. The Moon, planets and the ISS shine right through city glow.
How is the verdict calculated?
It fuses computed astronomy (altitude, phase, darkness) with the hour-by-hour cloud forecast for your exact location, weighted so overcast skies can never score a Good.