Best time to see Mars in St. Louis tonight
The best time to see Mars in St. Louis tonight is around 4:28 AM local time, when it climbs to 15° above the horizon, shining at magnitude 1.3. It rises at 3:04 AM, and with 24% cloud cover in the forecast, viewing conditions look fair tonight.
St. Louis, MO · Saturday, July 4 · look east-northeast
best window · magnitude 1.3
Doable, but not ideal: skies are partly cloudy and it sits low in the sky.
- Partly cloudy (24%)
- Low in the sky (15° up)
- Best after twilight ends
- Altitude15° · Low
- BrightnessMag 1.3 · Easy
- Cloud cover24% · Partly cloudy
- Sky darknessBortle 9 · Inner-city sky
Tonight's timeline
58% avg cloudLook East-northeast
It rises at 3:04 AM and reaches 15° above the horizon at its best.
Spot the red dot
Look east-northeast after dark. Mars shows a distinct orange-red tint — warmer than the stars around it.
A firmer point
Binoculars steady the colour but won't show a disk. Use them to pick Mars out of the twilight glow.
A tiny disk
A scope shows a small ruddy disk. Detail depends on altitude and how close Mars is this year — steady nights reward patience.
Watch its colour against the stars nearby: Mars glows a steady ember-orange while true stars flicker white. Through a telescope in the months around an opposition, look for a bright polar cap and dusky surface markings.
Mars looks red because its dust is full of rust — a whole planet of orange chalk!
SKY DARKNESS
Bortle 9Bright 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.
WATCHING WITH
Common questions
Where exactly should I look?
Face east-northeast and look low near the horizon — an open view without buildings or trees helps. Mars reaches 15° altitude around 4:28 AM from St. Louis, MO.
What's the exact best time?
4:28 AM local time tonight, when Mars stands highest in late twilight, with the sky nearly dark. It is up from 3:04 AM until it sets at 5:32 PM.
Do I need a telescope?
Not to spot it — Mars is a distinct red-orange point to the naked eye. A telescope shows a small ruddy disk, best on nights when Mars rides high.
Will clouds get in the way?
Forecast says 24% cloud cover at the 4:28 AM viewing time (58% average across the night). Look for gaps — Mars reappears the moment the cloud breaks.
How bright is Mars tonight?
Mars shines at magnitude 1.3 tonight — comparable to the brighter stars. Planets shine with a steady light while stars twinkle — that steadiness is the giveaway.
When is the best night to see Mars this week in St. Louis?
Tonight: 2% cloud forecast at its best time and Mars climbs to 15°. That's the pick across the next 7 nights from St. Louis.