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National forest

How dark is the sky in Cleveland National Forest?

Coordinates
Satellite data year 2025 · Clear-night record 2014 to 2023
Zenith sky brightness, moonless night
mag/arcsec²
22.0 pristine16.0 city center
Bortle class
Artificial light adds to the natural brightness of the sky overhead.
Calculated in advance for 2027 · not a weather forecast

When will the Milky Way be visible in Cleveland National Forest in 2027?

Nights in each month when the Milky Way core stands more than 10° above the horizon for at least an hour of moonless astronomical darkness. At 33.3° north the core peaks at about 28° high, so a clear southern horizon matters. These are calculated positions of the sun, moon and Milky Way; whether a night is clear is only known closer to the date.

Expected best nights in 2027, combining moonless darkness, Milky Way core time and average clear-night odds
New moons 2027, calculated
2012 to 2025

Has the sky over Cleveland National Forest gotten brighter?

Each point is how much artificial light added to the natural brightness of the sky overhead that year: 0% is a natural sky, 100% means twice as bright. Same satellite every year; it barely sees the blue part of white LED light, so recent years probably read too dark.

Nightly cloud record 2014 to 2023

Clear nights in Cleveland National Forest by month

The average number of nights each month with less than 30% cloud, from NASA POWER satellite records.

Light map · 100 km around Cleveland National Forest

Lights around Cleveland National Forest seen from orbit

NASA satellite image of light at night, 2025. The rings mark distances from Cleveland National Forest.

Where can you drive to the darkest sky at Cleveland National Forest?

The darkest viewpoints, campgrounds, parking areas and trailheads you can drive to, up to about 60 km from the center of Cleveland National Forest. Drive times from Aguanga, the nearest town (17 km N).

    A spot closed at night, or a number that looks wrong? Let us know.

    Satellite night-light map of the 100 km around Cleveland National Forest, with Tijuana, San Diego and Riverside marked
    Radiance, nW/cm²/sr
    0110300+
    Light domes · where the glow comes from

    Which towns light up the Cleveland National Forest horizon?

    The compass shows where the glow on the horizon comes from, counting all light more than 5 km away. The table names the towns behind it, including Cleveland National Forest's own outskirts.

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    The horizon in Cleveland National Forest, all 360°, brighter where more glow arrives
    NNEESESSWWNWN