Lewisville Stargazing & Astronomy Report
Light pollution and stargazing locations near Lewisville
- City
- Lewisville
- Country
- United States
- Latitude
- 33.0462
- Longitude
- -96.9942
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 17.78
- Bortle class
- Class 9 (Class 9)
- Darkness Quotient
- 21%
- Dataset
- March 2026
Inner city sky
Stargazing in Lewisville
Lewisville is a large suburban city in North Texas, part of the wider Dallas–Fort Worth urban area and very much shaped by the scale and sprawl of that metro region.
The city generally experiences High Light Pollution, with a Darkness Quotient of 21% — placing it among the more light-polluted urban locations, though not quite at the very worst extreme.
For practical observing from within the city, the most realistic targets are the Moon, planets, double stars and the brightest open clusters. A few showpiece deep-sky objects can be attempted with care, but faint nebulae and galaxies are largely washed out by the bright skyglow.
Meaningfully darker skies are not close at hand, and a proper improvement takes a substantial drive away from the Dallas–Fort Worth glow. The nearest reasonable dark-sky option is about 105 kilometres to the west near Love County, Oklahoma, while a stronger step up arrives around 145 kilometres to the north-north-west near Jefferson County, Oklahoma.
The map shows Lewisville embedded in a very bright urban field, with a large white-pink core at the centre fading through red and yellow into greener and bluer outer zones. In practical terms, that is the signature of a powerful metropolitan light dome rather than an isolated town with quick escape routes.
The darker areas in the crop sit mainly toward the west and north-west, where the colours give way to broader grey and darker blue patches between smaller pockets of settlement. By contrast, the east and south-east remain peppered with numerous bright knots, suggesting a more continuous spread of urban and suburban lighting.
Compared with its surroundings, Lewisville is clearly part of the brightest concentration on the map rather than a city sitting at its edge. The general pattern supports the data picture: the best improvement comes from heading well away from the metro glow, especially toward the west, north-west and north.
What the sky overhead is likely to look like
Looking straight up from Lewisville, the zenith is still heavily affected by urban glow, with an overhead reading of SQM 17.78. The sky background will usually appear bright grey rather than truly dark, especially once your eyes have had time to adapt.
Under those conditions, the familiar brighter constellations remain visible, but they tend to look thinned out compared with a rural sky. Only the stronger stars really stand out, and the Milky Way is effectively lost from view.
The overall impression is of a sky where bright objects still punch through well, but subtle structure and faint star fields are stripped away. For casual city observing that still leaves plenty to enjoy, but it is not a sky that shows deep-sky richness overhead.
north - poor
Fifteen kilometres north of Lewisville, the sky is still poor for astronomy, sitting at Bortle 8. It does improve steadily further out, with good rural conditions appearing at around 100 kilometres, but genuinely dark skies are not reached within the sampled distance in this direction.
north-north-east - poor
At about 15 kilometres to the north-north-east, conditions remain poor at Bortle 8, so the northern Dallas-area glow still dominates. The sky becomes more usable further out, and genuinely dark conditions are only reached at around 200 kilometres in this direction.
north-east - poor
Fifteen kilometres north-east of the city, the sky is still poor and effectively inner-urban in character at Bortle 9. There is a much better improvement farther out, with good conditions by around 100 kilometres and genuinely dark skies at roughly 200 kilometres.
east-north-east - poor
The east-north-east side is poor at a 15-kilometre quick-drive distance, with Bortle 9 skies still heavily washed by urban light. It improves substantially farther out, reaching good conditions around 100 kilometres and genuinely dark skies at about 200 kilometres.
east - poor
Fifteen kilometres east of Lewisville, the sky remains poor at Bortle 9, with very little practical escape from city glow. Conditions do improve with a long drive, reaching Bortle 4 by around 200 kilometres, but genuinely dark skies are not within the sampled radius in this direction.
east-south-east - poor
The east-south-east direction is still poor at 15 kilometres, with Bortle 9 brightness and strong urban washout. Even far out, this direction only improves to around Bortle 5 within the sampled range, so genuinely dark skies are not close this way.
south-east - poor
At 15 kilometres to the south-east, the sky is still poor at Bortle 9 and remains badly affected by metropolitan light. A worthwhile improvement appears only much farther out, with Bortle 4 reached around 200 kilometres, but genuinely dark skies are not found within the sampled distance.
south-south-east - poor
Fifteen kilometres south-south-east of the city, conditions are poor at Bortle 9, with little sign of a useful dark-sky escape nearby. Even after a long run outward, this direction only reaches about Bortle 5 within the sampled range.
south - poor
South of Lewisville, a quick drive of 15 kilometres still leaves you under poor Bortle 9 skies. There is some improvement much farther out, with Bortle 4 reached around 200 kilometres, but genuinely dark skies are not within the sampled radius in this direction.
south-south-west - poor
The south-south-west direction remains poor at 15 kilometres, with Bortle 9 conditions and strong skyglow. It improves only gradually and reaches Bortle 4 by around 200 kilometres, while genuinely dark skies do not appear within the sampled distance.
south-west - poor
At 15 kilometres to the south-west, the sky is still poor at Bortle 9, so this is not a useful quick escape route. The real improvement comes only with a much longer drive, and genuinely dark skies are reached at about 200 kilometres in this direction.
west-south-west - poor
Fifteen kilometres west-south-west of Lewisville, conditions are still poor at Bortle 8, though fractionally better than the brightest parts of the metro area. A meaningful improvement arrives farther out, reaching Bortle 4 around 200 kilometres, but genuinely dark skies are not within the sampled radius here.
west - poor
A quick drive 15 kilometres west still gives poor Bortle 8 skies, so the city glow remains very much present. This is one of the better long-range directions, though, with good conditions around 100 kilometres and genuinely dark skies at about 200 kilometres.
west-north-west - poor
West-north-west is still poor at 15 kilometres, with Bortle 8 skies rather than a real dark-sky break. It becomes one of the more promising directions farther out, reaching Bortle 4 around 100 kilometres and genuinely dark skies at about 200 kilometres.
north-west - poor
At 15 kilometres north-west of Lewisville, the sky remains poor at Bortle 8, so nearby observing is still heavily compromised. A much better improvement develops with distance, reaching Bortle 4 by around 100 kilometres and genuinely dark skies at about 200 kilometres.
north-north-west - poor
The north-north-west direction is still poor at 15 kilometres, with Bortle 8 skies and a strong urban background. It improves well with distance and reaches Bortle 4 around 100 kilometres, but genuinely dark skies are not achieved within the sampled range.
zenith - poor
Looking straight up from Lewisville, the zenith is poor at Bortle 9, with a bright urban sky background rather than a truly dark overhead view. The brighter constellations are still recognisable, but faint stars are thinned out, and the Milky Way is effectively invisible from the city centre.
-
Near LeFlore County, Oklahoma
- Direction
- NE
- Distance (km)
- 265
- SQM
- 21.31
- Bortle
- 3
Milky Way visible, broadband DSO imaging
-
Near Jefferson County, Oklahoma
- Direction
- NNW
- Distance (km)
- 145.7
- SQM
- 21.07
- Bortle
- 4
Bright nebulae, galaxies, narrowband imaging
-
Near Love County, Oklahoma
- Direction
- W
- Distance (km)
- 103.2
- SQM
- 20.84
- Bortle
- 4
Bright nebulae, galaxies, narrowband imaging
Genuinely dark skies require a significant journey from Lewisville rather than a quick hop out of town.
The nearest Bortle 4 conditions are about 105 kilometres to the west near Love County, Oklahoma, with another good option around 145 kilometres to the north-north-west near Jefferson County, Oklahoma. If you want a more impressive dark-sky jump again, the best nearby site in the data is about 265 kilometres to the north-east near LeFlore County, Oklahoma, where conditions reach Bortle 3.
-
Within 200 km
- Place
- Near Jefferson County, Oklahoma
- Direction
- NNW
- Distance (km)
- 145.7
- SQM
- 21.07
- Bortle
- 4
-
Within 500 km
- Place
- Near LeFlore County, Oklahoma
- Direction
- NE
- Distance (km)
- 265
- SQM
- 21.31
- Bortle
- 3
Long-term light pollution trend
Lewisville's night sky has brightened modestly over the long term. The SQM reading shifts from 18.14 in the earliest data to 17.78 in the latest, a change consistent with gradually increasing skyglow.
The average across the full series is 18.01, with readings ranging from 17.70 to 18.25. That is not a dramatic swing, but it does suggest that conditions have stayed persistently bright, with the overall trend slowly moving in the wrong direction for stargazers.
In day-to-day observing terms, this means Lewisville has remained a challenging urban location for years rather than a place with much seasonal or long-term relief. Small changes matter at the margin, but the city is firmly in the heavily light-polluted category throughout the record.
From within Lewisville, the most rewarding targets are bright, high-contrast objects that can punch through heavy skyglow. The Moon and planets are the obvious standouts, and double stars also hold up well under bright urban skies.
A few showpiece deep-sky objects can still be tried, especially the Orion Nebula and the brightest globular clusters, but expectations need to stay modest. They are more a matter of detection and basic shape than rich detail.
For the Milky Way, faint galaxies, wide nebulae and meteor watching, a dark site makes an enormous difference. Those are the targets that really benefit from leaving the city well behind.
- 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 Lewisville?
Yes — but far fewer than from a rural site. The brighter stars and main constellation patterns are still visible, while faint stars are heavily suppressed by the city's bright sky.
Can you see the Milky Way from Lewisville?
No, not realistically from within the city. Lewisville's Bortle 9 sky and SQM 17.78 mean the Milky Way is overwhelmed by urban skyglow.
What Bortle class is Lewisville?
Lewisville is Bortle 9, which is an inner-city level of light pollution. In practice, that means bright objects are still worth viewing, but faint deep-sky observing is very limited.
What is the SQM in Lewisville?
The measured night-sky brightness is SQM 17.78. That is a bright urban reading, consistent with strong light pollution.
Where are the nearest dark skies to Lewisville?
The nearest reasonable dark-sky site in the supplied data is Near Love County, Oklahoma, about 105 kilometres west, where conditions reach Bortle 4. A darker option is Near Jefferson County, Oklahoma, about 145.7 kilometres north-north-west at Bortle 4, and the strongest nearby site listed is Near LeFlore County, Oklahoma, about 265 kilometres north-east at Bortle 3.
Is Lewisville good for astrophotography?
It is workable for the Moon, planets and some narrow-field bright targets, but not ideal for deep-sky astrophotography from the city itself. The bright background makes long-exposure imaging of faint nebulae and galaxies much more difficult.
How far do you need to drive from Lewisville for darker skies?
For a clear step up, you are looking at roughly 105 kilometres to reach Bortle 4 skies near Love County, Oklahoma. For darker still, about 265 kilometres north-east reaches Bortle 3 conditions near LeFlore County, Oklahoma.