What planets are visible tonight?

Which planets are visible depends on your date and location. Venus, Jupiter, Mars, and Saturn are the four naked-eye planets that are frequently visible; Mercury is visible only in brief windows near sunrise or sunset. Enter your city above and the report will list the planets currently above the horizon after dark.

Can I see the Northern Lights tonight?

Aurora visibility depends on the Kp index and your geomagnetic latitude. At Kp 3, aurora is typically visible only near the Arctic and Antarctic circles. At Kp 5 (a G1 storm), the auroral oval expands south into the northern U.S. and northern Europe. At Kp 7+ it can reach mid-latitudes. The report above compares your latitude to the current auroral boundary in real time.

Is there a meteor shower tonight?

There are around a dozen major meteor showers each year. The report above shows the next active shower and how many days until its peak. For best viewing, look after midnight from a dark location with the shower's radiant above the horizon.

When will the ISS pass over tonight?

The International Space Station passes overhead multiple times per day, but only some passes are visible (bright, after dusk or before dawn, and above the horizon). The report above shows the next visible pass time for your location, computed from live NORAD orbital elements.

What can I see in the sky tonight from Porto Alegre, Rio Grande do Sul, Brazil?

Tonight from Porto Alegre, Rio Grande do Sul, Brazil expect a waxing gibbous Moon at 61% illumination, with these naked-eye planets above the horizon after dark: Saturn, Mars, Jupiter, Mercury. The night offers about 8.3 hours of true astronomical darkness.

What planets are visible tonight in Porto Alegre, Rio Grande do Sul, Brazil?

Tonight in Porto Alegre, Rio Grande do Sul, Brazil, Saturn, Mars, Jupiter, Mercury are visible to the naked eye after dark, based on this location's real ephemeris for tonight.

When does darkness start tonight in Porto Alegre, Rio Grande do Sul, Brazil?

Astronomical darkness begins at 8:01 PM local time in Porto Alegre, Rio Grande do Sul, Brazil tonight, the moment the Sun drops more than 18° below the horizon and the sky becomes fully dark for faint-object observing.

Can you see the aurora tonight in Porto Alegre, Rio Grande do Sul, Brazil?

Porto Alegre, Rio Grande do Sul, Brazil is far enough from the pole that aurora only reaches overhead during a major geomagnetic storm — specifically when the planetary Kp index reaches about 9, a level reached only a handful of times per solar cycle.

What is the stargazing light pollution level in Porto Alegre, Rio Grande do Sul, Brazil?

Porto Alegre, Rio Grande do Sul, Brazil is a large metropolitan area — typically Bortle class 7–9 (bright, inner-city sky), where only the Moon, planets, and the brightest stars are visible. These are typical ranges for this population size, not a measured reading for this exact spot — use tonight's Moon phase and the best-nights list above to time a visit away from direct lighting.

Is light pollution a problem in Porto Alegre, Rio Grande do Sul, Brazil?

Porto Alegre, Rio Grande do Sul, Brazil is a large metropolitan area, so expect only the Moon, planets, and the brightest stars from inside it. This page's Moon and darkness figures tell you the other half of the story.

When can I see the Milky Way from Porto Alegre, Rio Grande do Sul, Brazil?

The core reaches about 89° altitude, so target the moonless nights listed in the best-nights section and get away from the city core.

How dark does it actually get in Porto Alegre, Rio Grande do Sul, Brazil tonight?

About 8.3 hours of astronomical darkness (Sun more than 18° below the horizon). That is the real observing window for faint objects; brighter targets are workable from dusk onward.

Live Sky Report

What Can I See in the Sky Tonight in Porto Alegre, Rio Grande do Sul, Brazil?

Waxing Gibbous moon at 61%, Saturn shines at magnitude 0.3. Calculated for -30.03°, -51.23° (America/Sao_Paulo).

Moon

Waxing Gibbous

61% lit

Sunset

6:37 PM

Dusk 8:01 PM

Dark hours

8.3 h

Dawn 4:17 AM

Aurora

Needs Kp 9+

Belt 58°

Visible planets tonight

Saturn, Mars, Jupiter, Mercury — brightest: Saturn at mag 0.3 in Cetus

🔭 Tonight's Sky Report

📍 Porto Alegre, Rio Grande do Sul, Brazil — Monday, October 19

Live cloud cover, temperature, ISS passes and aurora odds load in your browser and need JavaScript. The moon, planet and meteor rows below are calculated without it.

⭐ StargazingWeather telemetry updating

🌙 MoonWaxing Gibbous • 61% Illumination

🪐 Visible planetsMercury, Mars, Jupiter, Saturn

🌠 Meteor activityOrionids in 1 day

🌌 Milky WayMuted by moonlight tonight

🛰️ ISSISS pass predictions unavailable

🌈 AuroraUnlikely — Quiet (Kp 0.3)

☁️ Cloud coverWeather telemetry updating

🌡️ TemperatureWeather telemetry updating

Space weather observed: 3:00 PM UTC

Tonight's sky above Porto Alegre, Rio Grande do Sul, Brazil

Whether tonight is a good night for stargazing from Porto Alegre, Rio Grande do Sul, Brazil comes down to four real things: the Moon phase, cloud cover, which planets are up, and the current Kp index.

Local sky character in Porto Alegre

Southern mid-latitudes · southern hemisphere · 46 m elevation

The south celestial pole stands 30° above the horizon, so stars within 30° of it never set from here.
About 75% of the whole sky rises above the horizon at some point in the year from this latitude.
The Milky Way's core in Sagittarius culminates about 89° up, passing almost directly overhead.
The Large and Small Magellanic Clouds are circumpolar here — visible on any clear, dark night of the year.
At 46 m elevation, roughly 1% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.

Pole altitude

30°

Sky reachable

75%

Milky Way core

89° max

Aurora australis

Kp 9+

With a population above one million, Porto Alegre produces significant sky glow: expect the Moon, planets and bright stars from the centre, and travel outward for the Milky Way.

Loading live sky conditions…

Best nights this month in Porto Alegre

Calculated for these coordinates and today's date — not a fixed list.

2026-10-21 — Orionids peak — up to 20/hour
Radiant in Orion. Visible from both hemispheres. The Moon is 72% lit on peak night, so lunar interference is moderate.
2026-10-25 — Full Moon
A 100%-lit Moon washes out faint objects, but lunar terrain along the limb is at its most striking — plan bright targets and planets instead of deep sky.
2026-11-08 — Darkest night of the coming month
The Moon is only 0% illuminated, giving the least lunar interference in the next 30 nights — the best window for the Milky Way and faint deep-sky targets from Porto Alegre, Rio Grande do Sul, Brazil.
2026-11-17 — Leonids peak — up to 15/hour
Radiant in Leo. Visible from both hemispheres. The Moon is 45% lit on peak night, so lunar interference is moderate.

Porto Alegre, Rio Grande do Sul, Brazil stargazing questions

What can I see in the sky tonight from Porto Alegre, Rio Grande do Sul, Brazil?: Tonight from Porto Alegre, Rio Grande do Sul, Brazil expect a waxing gibbous Moon at 61% illumination, with these naked-eye planets above the horizon after dark: Saturn, Mars, Jupiter, Mercury. The night offers about 8.3 hours of true astronomical darkness.
What planets are visible tonight in Porto Alegre, Rio Grande do Sul, Brazil?: Tonight in Porto Alegre, Rio Grande do Sul, Brazil, Saturn, Mars, Jupiter, Mercury are visible to the naked eye after dark, based on this location's real ephemeris for tonight.
When does darkness start tonight in Porto Alegre, Rio Grande do Sul, Brazil?: Astronomical darkness begins at 8:01 PM local time in Porto Alegre, Rio Grande do Sul, Brazil tonight, the moment the Sun drops more than 18° below the horizon and the sky becomes fully dark for faint-object observing.
Can you see the aurora tonight in Porto Alegre, Rio Grande do Sul, Brazil?: Porto Alegre, Rio Grande do Sul, Brazil is far enough from the pole that aurora only reaches overhead during a major geomagnetic storm — specifically when the planetary Kp index reaches about 9, a level reached only a handful of times per solar cycle.
What is the stargazing light pollution level in Porto Alegre, Rio Grande do Sul, Brazil?: Porto Alegre, Rio Grande do Sul, Brazil is a large metropolitan area — typically Bortle class 7–9 (bright, inner-city sky), where only the Moon, planets, and the brightest stars are visible. These are typical ranges for this population size, not a measured reading for this exact spot — use tonight's Moon phase and the best-nights list above to time a visit away from direct lighting.
Is light pollution a problem in Porto Alegre, Rio Grande do Sul, Brazil?: Porto Alegre, Rio Grande do Sul, Brazil is a large metropolitan area, so expect only the Moon, planets, and the brightest stars from inside it. This page's Moon and darkness figures tell you the other half of the story.
When can I see the Milky Way from Porto Alegre, Rio Grande do Sul, Brazil?: The core reaches about 89° altitude, so target the moonless nights listed in the best-nights section and get away from the city core.
How dark does it actually get in Porto Alegre, Rio Grande do Sul, Brazil tonight?: About 8.3 hours of astronomical darkness (Sun more than 18° below the horizon). That is the real observing window for faint objects; brighter targets are workable from dusk onward.

Nearby cities

Real great-circle distance from Porto Alegre, Rio Grande do Sul, Brazil.

More in Rio Grande do Sul

Other sky reports in the same region.

Sky tonight across Brazil

Other cities in Brazil with live sky reports.

Popular astronomy destinations

Aurora hubs, dark-sky sites, and observatory towns.

🛰️ ISS Visibility

No visible ISS passes currently predicted for this location.

☄️ Orionids peaks in 1 day

Up to 20 meteors/hour at peak, radiating from Orion.

Full viewing guide →

Related astronomy for Porto Alegre, Rio Grande do Sul, Brazil

Frequently Asked Questions

Is this just astronomy weather for Porto Alegre?

This page goes beyond ordinary astronomy weather -- it combines real local weather for astronomy, live space weather, and the space weather aurora connection into one live report for Porto Alegre, Rio Grande do Sul, Brazil.

What are tonight's astronomy viewing conditions for Porto Alegre?

The sky viewing conditions badge above reflects the real astronomy viewing conditions for Porto Alegre, Rio Grande do Sul, Brazil right now -- cloud cover, darkness, and moon interference combined, not moon phase alone. Good weather for stargazing depends on all of these together.