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 San Francisco, Heredia Province, Costa Rica?

Tonight from San Francisco, Heredia Province, Costa Rica expect a first quarter Moon at 56% illumination, with these naked-eye planets above the horizon after dark: Saturn, Mars, Jupiter, Mercury. The night offers about 9.8 hours of true astronomical darkness.

What planets are visible tonight in San Francisco, Heredia Province, Costa Rica?

Tonight in San Francisco, Heredia Province, Costa Rica, 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 San Francisco, Heredia Province, Costa Rica?

Astronomical darkness begins at 6:28 PM local time in San Francisco, Heredia Province, Costa Rica 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 San Francisco, Heredia Province, Costa Rica?

San Francisco, Heredia Province, Costa Rica 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 San Francisco, Heredia Province, Costa Rica?

San Francisco, Heredia Province, Costa Rica is a small town — typically Bortle class 1–4 (rural to excellent dark sky), where the Milky Way is usually visible on clear, moonless nights away from local lighting. 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.

Can I see both northern and southern constellations from San Francisco, Heredia Province, Costa Rica?

Yes — this is the real advantage of an equatorial location. At 10.0° N, about 58.7% of the entire celestial sphere rises at some point in the year, so Polaris-side constellations and the Southern Cross region are both reachable across the seasons.

How good is the Milky Way from San Francisco, Heredia Province, Costa Rica?

The Galactic Centre culminates around 51° above the horizon from here, high enough to clear most horizon haze. Local cloud and humidity, not geometry, are usually the limiting factor at tropical latitudes.

Are there seasons for stargazing in San Francisco, Heredia Province, Costa Rica?

Night length barely changes at this latitude — twilight is short and the Sun sets steeply, so darkness arrives quickly all year. What changes is which part of the sky is on view after sunset, and, in monsoon-affected regions, how often the sky is clear at all.

How dark does it actually get in San Francisco, Heredia Province, Costa Rica tonight?

About 9.8 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 San Francisco, Heredia Province, Costa Rica?

First Quarter moon at 56%, Saturn shines at magnitude 0.3. Calculated for 9.99°, -84.13° (America/Costa_Rica).

Moon

First Quarter

56% lit

Sunset

5:17 PM

Dusk 6:28 PM

Dark hours

9.8 h

Dawn 4:14 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

📍 San Francisco, Heredia Province, Costa Rica — 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

🌙 MoonFirst Quarter • 56% Illumination

🪐 Visible planetsMercury, Mars, Jupiter, Saturn

🌠 Meteor activityOrionids in 2 days

🌌 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 AM UTC

Tonight's sky above San Francisco, Heredia Province, Costa Rica

San Francisco, Heredia Province, Costa Rica's sky tonight is a real, computable state — every value on this page comes from live NOAA space weather data, live orbital elements for the ISS, and astronomy-engine's ephemeris for the Sun, Moon, and planets.

Local sky character in San Francisco

Tropical / equatorial latitudes · northern hemisphere · 1131 m elevation

The north celestial pole stands 10° above the horizon, so stars within 10° of it never set from here.
About 58.7% 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 51° up, clearing the horizon haze comfortably.
The Large Magellanic Cloud only reaches about 10.3° altitude, so it is a low, seasonal target rather than a year-round one.
At 1131 m elevation, roughly 12% of the atmosphere's mass is already below you, which measurably reduces extinction near the horizon.

Pole altitude

10°

Sky reachable

58.7%

Milky Way core

51° max

Aurora borealis

Kp 9+

San Francisco is small enough that local light domes are limited — on a clear, moonless night the Milky Way is realistically within reach.

Loading live sky conditions…

Best nights this month in San Francisco

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.
2026-10-26 — 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.
2026-11-05 — Taurids peak — up to 5/hour
Radiant in Taurus. Favours the Northern Hemisphere, which includes San Francisco, Heredia Province, Costa Rica. The Moon is 18% lit on peak night, so lunar interference is low.
2026-11-09 — 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 San Francisco, Heredia Province, Costa Rica.
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.

San Francisco, Heredia Province, Costa Rica stargazing questions

What can I see in the sky tonight from San Francisco, Heredia Province, Costa Rica?: Tonight from San Francisco, Heredia Province, Costa Rica expect a first quarter Moon at 56% illumination, with these naked-eye planets above the horizon after dark: Saturn, Mars, Jupiter, Mercury. The night offers about 9.8 hours of true astronomical darkness.
What planets are visible tonight in San Francisco, Heredia Province, Costa Rica?: Tonight in San Francisco, Heredia Province, Costa Rica, 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 San Francisco, Heredia Province, Costa Rica?: Astronomical darkness begins at 6:28 PM local time in San Francisco, Heredia Province, Costa Rica 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 San Francisco, Heredia Province, Costa Rica?: San Francisco, Heredia Province, Costa Rica 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 San Francisco, Heredia Province, Costa Rica?: San Francisco, Heredia Province, Costa Rica is a small town — typically Bortle class 1–4 (rural to excellent dark sky), where the Milky Way is usually visible on clear, moonless nights away from local lighting. 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.
Can I see both northern and southern constellations from San Francisco, Heredia Province, Costa Rica?: Yes — this is the real advantage of an equatorial location. At 10.0° N, about 58.7% of the entire celestial sphere rises at some point in the year, so Polaris-side constellations and the Southern Cross region are both reachable across the seasons.
How good is the Milky Way from San Francisco, Heredia Province, Costa Rica?: The Galactic Centre culminates around 51° above the horizon from here, high enough to clear most horizon haze. Local cloud and humidity, not geometry, are usually the limiting factor at tropical latitudes.
Are there seasons for stargazing in San Francisco, Heredia Province, Costa Rica?: Night length barely changes at this latitude — twilight is short and the Sun sets steeply, so darkness arrives quickly all year. What changes is which part of the sky is on view after sunset, and, in monsoon-affected regions, how often the sky is clear at all.
How dark does it actually get in San Francisco, Heredia Province, Costa Rica tonight?: About 9.8 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 San Francisco, Heredia Province, Costa Rica.

Sky tonight across Costa Rica

Other cities in Costa Rica 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 2 days

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

Full viewing guide →

Related astronomy for San Francisco, Heredia Province, Costa Rica

Frequently Asked Questions

Is this just astronomy weather for San Francisco?

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 San Francisco, Heredia Province, Costa Rica.

What are tonight's astronomy viewing conditions for San Francisco?

The sky viewing conditions badge above reflects the real astronomy viewing conditions for San Francisco, Heredia Province, Costa Rica right now -- cloud cover, darkness, and moon interference combined, not moon phase alone. Good weather for stargazing depends on all of these together.