Henderson Stargazing & Astronomy Report

Light pollution and stargazing locations near Henderson

City
Henderson
Country
United States
Latitude
36.0395
Longitude
-114.9817

Key Sky Quality Metrics

SQM (mag/arcsec²)
17.99
Bortle class
Class 9 (Class 9)
Darkness Quotient
23%
Dataset
March 2026

Inner city sky

Henderson stargazing at a glance

Henderson is a large suburban city in southern Nevada, part of the wider Las Vegas urban area and set amid open desert landscapes.

With a Darkness Quotient of 23%, Henderson sits in the High Light Pollution tier — making it brighter than many smaller inland cities, though not quite at the very worst end of global urban skyglow.

In practical terms, brighter targets are the most realistic from within the city: the Moon, planets, double stars and the brightest open clusters. A few showpiece objects, such as the Orion Nebula or the brightest globular clusters, can still be attempted, but faint galaxies, subtle nebulae and the Milky Way are overwhelmed by the city glow.

Meaningfully darker skies do not sit right on the doorstep, but they are reachable with a solid drive out of the metro area. The nearest standout site in the supplied data is around 270 kilometres to the east-north-east near Kane County, Utah, while the darkest listed option lies about 285 kilometres to the north-west near Esmeralda County, Nevada.

The map shows Henderson embedded in a very bright urban core, with a pink-white centre surrounded by red, yellow, green and then blue-grey halos. That pattern is typical of a major built-up area whose light spills widely into the surrounding desert, so the city is much brighter than its immediate surroundings rather than just marginally above them.

The most heavily illuminated areas appear concentrated around the central urban mass and in several linked bright patches nearby, especially towards the north-east and south. By contrast, darker ground begins to open up more convincingly away from the city glow towards the east, south-east and south, where the colour scale drops through blue into darker grey-black.

There is also a noticeably stubborn brightness towards the west and north-west, where the glow remains stronger for longer before yielding to darker terrain. Overall, Henderson stands out as a bright island within a much darker desert region, but one whose light dome is broad enough that you need to get well clear of the metropolitan halo before the sky improves properly.

What the sky overhead is like

Looking straight up from Henderson, the zenith is heavily washed by urban skyglow rather than properly dark. With an overhead reading of SQM 17.99, the sky background is bright enough that familiar constellations still show, but the finer texture of the night sky is stripped away.

In practice, the brightest stars and the main asterisms remain easy to pick out, while fainter stars drop out quickly and the sky can take on a pale, muted appearance. The Milky Way is not a realistic naked-eye sight from central conditions like these, and contrast on subtle deep-sky targets is poor even when they are high overhead.

For casual stargazing, the Moon and planets still perform well because they are bright enough to punch through the glow. For anyone chasing nebulae, galaxies or rich star fields, the zenith itself makes clear why leaving the city is so worthwhile.

north - poor

About 15 kilometres north of Henderson, the sky is still poor, around Bortle 7, so the urban glow remains very obvious. Conditions improve meaningfully farther out, with genuinely dark skies reached at around 100 kilometres in this direction.

north-north-east - marginal

Around 15 kilometres to the north-north-east, conditions are marginal at roughly Bortle 6, giving some relief from the city but still a bright background. A more substantial improvement arrives farther out, with genuinely dark skies at about 100 kilometres.

north-east - marginal

At roughly 15 kilometres north-east of the city, the sky is marginal, around Bortle 6, so brighter constellations and showpiece objects fare better than faint targets. This direction improves steadily, with genuinely dark conditions reached at around 100 kilometres.

east-north-east - marginal

Around 15 kilometres east-north-east, the sky is still marginal at about Bortle 6, but it is one of the more encouraging directions close to Henderson. Darker skies arrive sooner here than in many other directions, with genuinely dark conditions reached by around 50 kilometres.

east - marginal

At about 15 kilometres east of Henderson, the sky remains marginal, around Bortle 6, though the urban dome is easing compared with the city centre. This is a promising escape route, with genuinely dark skies appearing at roughly 50 kilometres.

east-south-east - marginal

Roughly 15 kilometres east-south-east of the city, conditions are marginal at about Bortle 6, so observing is improved but still far from truly dark. The sky gets much better with distance, reaching genuinely dark territory at around 50 kilometres.

south-east - marginal

Around 15 kilometres south-east, the sky is marginal, near Bortle 6, with a noticeable but incomplete escape from Henderson's glow. This direction strengthens well farther out, with genuinely dark skies reached at about 50 kilometres.

south-south-east - marginal

At roughly 15 kilometres south-south-east of Henderson, the sky is marginal at about Bortle 6, making brighter deep-sky targets more realistic than in town. Genuinely dark conditions are available farther out, at around 50 kilometres in this direction.

south - marginal

About 15 kilometres south of the city, the sky is marginal, around Bortle 6, with decent improvement over the centre but still plenty of skyglow. Darker conditions arrive at around 50 kilometres, making this another useful direction for a proper observing run.

south-south-west - marginal

Around 15 kilometres south-south-west, conditions are marginal at roughly Bortle 6, so the sky is improved but not yet dark. By about 50 kilometres the sky becomes good, and genuinely dark conditions follow farther out at around 100 kilometres.

south-west - poor

At roughly 15 kilometres south-west of Henderson, the sky is still poor at about Bortle 8, with strong light pollution lingering in that direction. It does improve with distance, but genuinely dark skies are only reached at around 100 kilometres.

west-south-west - poor

Around 15 kilometres west-south-west, the sky remains poor at about Bortle 9, one of the brightest quick-drive directions from Henderson. There is a clear improvement farther out, but genuinely dark conditions do not arrive until around 100 kilometres.

west - poor

At about 15 kilometres west of the city, the sky is still poor at roughly Bortle 9, with the metropolitan glow dominating the view. Meaningful dark-sky relief takes a long run in this direction, with genuinely dark skies only appearing at around 100 kilometres.

west-north-west - poor

Roughly 15 kilometres west-north-west, the sky is poor at about Bortle 9 and remains heavily affected by urban lighting. This direction eventually improves, but genuinely dark conditions are not reached until around 100 kilometres.

north-west - poor

Around 15 kilometres north-west of Henderson, the sky is still poor at roughly Bortle 9, so this is not a favourable direction for a quick local session. Conditions do become much better farther out, with genuinely dark skies reached at about 100 kilometres.

north-north-west - poor

At about 15 kilometres north-north-west, the sky is poor at around Bortle 9, with severe light pollution still present. A proper dark-sky improvement requires a much longer drive, with genuinely dark conditions reached at around 100 kilometres.

zenith - poor

Directly overhead in Henderson, the sky is poor at Bortle 9, with a bright background that washes out many fainter stars. You can still pick out the main constellations and the brightest stars, but the Milky Way is not visible and the sky lacks the depth seen from darker locations.

  • Near Esmeralda County, Nevada
    Direction
    NW
    Distance (km)
    287
    SQM
    21.76
    Bortle
    2

    Milky Way, faint nebulae, deep-sky imaging

  • Near Kane County, Utah
    Direction
    ENE
    Distance (km)
    271.7
    SQM
    21.61
    Bortle
    3

    Milky Way visible, broadband DSO imaging

  • Near San Bernardino County, California
    Direction
    SSW
    Distance (km)
    229
    SQM
    21.36
    Bortle
    3

    Milky Way visible, broadband DSO imaging

Genuinely dark skies require a significant journey from Henderson rather than a quick hop out of town.

The nearest really strong option in the supplied sites is around 270 kilometres to the east-north-east near Kane County, Utah, while the darkest listed skies are about 285 kilometres to the north-west near Esmeralda County, Nevada. Closer to the city, the best directional improvements tend to build gradually towards the east and south-east before turning genuinely dark farther out.

  • Within 500 km
    Place
    Near Esmeralda County, Nevada
    Direction
    NW
    Distance (km)
    287
    SQM
    21.76
    Bortle
    2

Long-term light pollution trend

Henderson's night sky has brightened slightly over the long term. The recorded SQM shifts from 18.42 in the earliest data to 17.99 in the latest, a change of 0.43 magnitudes per square arcsecond in the brighter direction.

The overall trend slope of -0.0322 SQM per year points to a slow but persistent increase in skyglow rather than a sudden jump. Across 75 datasets, the city has ranged from 17.99 at its brightest to 18.51 at its darkest, so the variation is present but the broader picture remains one of consistently heavy urban light pollution.

For observers, that means Henderson has not dramatically changed character over time: it has remained a bright-sky location, with only limited windows for serious deep-sky observing from within the city itself.

From within Henderson, the city-friendly targets are the obvious bright ones: the Moon, planets, double stars and the brightest open clusters. These can still be enjoyable because they rely less on a dark background sky.

A few showpiece deep-sky objects are possible with patience and suitable equipment, especially the Orion Nebula and the brightest globular clusters, but contrast is the limiting factor. You are usually fighting the sky rather than the object.

For the Milky Way, faint galaxies, broad nebulae and meteor watching, a dark site makes an enormous difference. Those are the targets that really benefit from getting well beyond the urban glow.

  • Moon
  • planets
  • double stars
  • brightest open clusters
  • Orion Nebula (M42)
  • brightest globular clusters
  • Milky Way
  • faint galaxies
  • broadband nebulae
  • meteor showers

Can you see stars from Henderson?

Yes — you can still see stars from Henderson, including the brighter constellations and the more prominent individual stars. What you lose is the fainter background population, so the sky looks much less rich than it would from rural Nevada.

Can you see the Milky Way from Henderson?

Not realistically from typical city conditions in Henderson. The sky is simply too bright, so the Milky Way is washed out by urban glow.

What Bortle class is Henderson?

Henderson is Bortle 9, which is an inner-city level sky. In practical terms, that means severe light pollution and limited deep-sky visibility from within the city.

What is the SQM in Henderson?

The measured sky brightness is SQM 17.99. That is a bright urban reading, consistent with a heavily light-polluted sky.

Where are the nearest dark skies to Henderson?

Among the listed nearby sites, the nearest strong dark-sky option is Near Kane County, Utah, about 272 kilometres to the east-north-east. The darkest listed site is Near Esmeralda County, Nevada, about 287 kilometres to the north-west.

Is Henderson good for astrophotography?

It can work for lunar, planetary and narrow-field imaging of bright targets, but it is not ideal for wide-field deep-sky astrophotography from within the city. For nebulae, galaxies and Milky Way landscapes, you will get far better results by travelling to darker skies.

How far do you need to drive from Henderson for darker skies?

A noticeable improvement begins once you leave the brightest urban halo, especially towards the east and south-east. For genuinely dark skies, the data points to a substantial journey, with the nearest listed top-quality sites roughly 270 to 290 kilometres away.