Port-au-Prince Stargazing & Astronomy Report
Light pollution and stargazing locations near Port-au-Prince
- City
- Port-au-Prince
- Country
- Haiti
- Latitude
- 18.5944
- Longitude
- -72.3074
Key Sky Quality Metrics
- SQM (mag/arcsec²)
- 20.31
- Bortle class
- Class 5 (Class 5)
- Darkness Quotient
- 54%
- Dataset
- March 2026
Suburban sky
Stargazing in Port-au-Prince
Port-au-Prince is Haiti’s capital and principal coastal city, set on the Gulf of Gonâve in the south-west of the country and functioning as the nation’s main urban and economic centre.
With a Darkness Quotient of 54%, it sits in the Moderate Light Pollution tier — brighter than smaller rural Haitian communities, but notably better than many of the world’s largest and most intensely lit capitals. For practical observing from within the city, brighter targets are the most realistic: the Moon, planets, double stars and some of the brighter star clusters and nebulae. Fainter galaxies and more delicate deep-sky detail are still held back by the urban glow.
The encouraging part is that meaningfully darker skies are not especially far away. A good step up is available roughly 30 kilometres to the south-south-west near Near Commune Jacmel, South-East, while some of the best nearby conditions are around 45 kilometres to the south-west near Near Commune Léogâne, West.
The map shows Port-au-Prince as part of one of the brighter concentrations on Hispaniola, with a strong urban glow spreading out from the built-up area into a broader halo of lighter colour. The brightest core stands out clearly against the surrounding countryside, indicating a substantial concentration of artificial light rather than a small isolated settlement.
What is striking, though, is how quickly that glow gives way to darker terrain away from the main urban corridor. To the north, west and especially out over less populated areas beyond the city, the colours drop away into much darker tones, suggesting that the capital’s light dome is prominent but relatively localised compared with the wider region.
The south-eastern and south-western surroundings also show a noticeable improvement once clear of the immediate city. In practical terms, the map supports the data well: Port-au-Prince is plainly brighter than its hinterland, but it is not trapped inside an endless sprawl of light, so a modest drive can produce a worthwhile jump in sky quality.
Looking up from the city
Looking straight up from Port-au-Prince, the zenith is consistent with a suburban-style sky rather than a heavily washed-out inner-city one. The brightest constellations remain easy to trace, and the richer parts of the sky are still visible overhead, but the background is not truly dark.
That means the Moon and planets show well, and bright star fields can still be enjoyable, especially when the air is clear. Some brighter deep-sky objects are possible, but they tend to lack contrast and subtle structure compared with what you would see from outside the capital.
In day-to-day terms, this is the sort of sky where casual stargazing is still rewarding, but serious deep-sky observing benefits greatly from even a fairly short trip beyond the city glow.
north - excellent
About 15 kilometres north of the city, the sky is already excellent, with Bortle 3 conditions at that distance. Genuinely dark skies arrive quickly in this direction, and they begin roughly 10 kilometres from central Port-au-Prince.
north-north-east - excellent
Around 15 kilometres north-north-east, conditions are excellent, corresponding to Bortle 3 skies. This is one of the quickest directions for escaping the city glow, with genuinely dark conditions starting at roughly 10 kilometres.
north-east - excellent
At around 15 kilometres to the north-east, the sky reaches excellent quality, with Bortle 3 darkness. The improvement is swift here, with genuinely dark skies becoming available at about 15 kilometres and strengthening further beyond that.
east-north-east - excellent
Roughly 15 kilometres east-north-east, the sky is excellent, again reaching Bortle 3 territory. This direction improves steadily after leaving the city, with a clear dark-sky threshold reached at about 15 kilometres.
east - excellent
About 15 kilometres east of Port-au-Prince, conditions are already excellent at Bortle 3. Darker skies are reachable without a very long journey in this direction, beginning at around 15 kilometres from the city.
east-south-east - good
At around 15 kilometres east-south-east, the sky is good rather than truly dark, corresponding to Bortle 4. A more substantial improvement comes further out, with Bortle 3 conditions reached at about 25 kilometres.
south-east - good
Roughly 15 kilometres to the south-east, the sky is good, with Bortle 4 conditions at that distance. For a stronger step up, continue farther out, as genuinely dark skies appear at around 25 kilometres.
south-south-east - good
Around 15 kilometres south-south-east, observers can expect good Bortle 4 skies. Darker conditions are available further on, with Bortle 3 reached at about 25 kilometres from the city.
south - good
At about 15 kilometres due south, the sky is good, matching Bortle 4 quality. If you keep going, conditions improve markedly, with genuinely dark skies beginning at around 25 kilometres.
south-south-west - good
Roughly 15 kilometres south-south-west, the sky is good at Bortle 4. A stronger dark-sky improvement comes a bit farther out, with Bortle 3 conditions reached at about 25 kilometres.
south-west - good
Around 15 kilometres south-west, the sky is good rather than fully dark, corresponding to Bortle 4. Continue farther in this direction and you reach genuinely dark Bortle 3 conditions at about 25 kilometres.
west-south-west - good
At around 15 kilometres west-south-west, the sky is good, with Bortle 4 conditions. Darker skies are not far beyond that, with Bortle 3 reached at about 25 kilometres from Port-au-Prince.
west - excellent
About 15 kilometres west of the city, conditions are already excellent, reaching Bortle 3. This makes the west a strong option for a relatively quick escape from urban skyglow, with dark skies beginning at roughly 15 kilometres.
west-north-west - excellent
Around 15 kilometres west-north-west, the sky is excellent, with Bortle 3 darkness at that range. It is a favourable direction for observers, as genuinely dark skies begin at about 15 kilometres and continue improving farther out.
north-west - excellent
At roughly 15 kilometres to the north-west, the sky reaches excellent quality under Bortle 3 conditions. This direction offers a quick transition away from the city’s light dome, with dark skies available from about 15 kilometres.
north-north-west - excellent
Around 15 kilometres north-north-west, the sky is excellent, corresponding to Bortle 3. The city glow drops away fairly quickly here, with genuinely dark conditions reached at about 15 kilometres.
zenith - fair
Looking straight up from Port-au-Prince, the zenith is fair, matching a Bortle 5 sky. Familiar constellations remain easy to recognise and the brighter star patterns hold up well, but the background sky is still bright enough to mute finer deep-sky detail and keep the Milky Way from showing strongly.
-
Near Commune Léogâne, West
- Direction
- SW
- Distance (km)
- 42.6
- SQM
- 21.70
- Bortle
- 3
Milky Way visible, broadband DSO imaging
-
Near Commune Jacmel, South-East
- Direction
- SSW
- Distance (km)
- 28.4
- SQM
- 21.62
- Bortle
- 3
Milky Way visible, broadband DSO imaging
-
Near Commune de Dessalines, Artibonite Department
- Direction
- WNW
- Distance (km)
- 82.8
- SQM
- 21.58
- Bortle
- 3
Milky Way visible, broadband DSO imaging
Genuinely dark skies are quite accessible from Port-au-Prince rather than requiring a major expedition. The nearest strong improvement is about 30 kilometres to the south-south-west near Near Commune Jacmel, South-East, where conditions reach Bortle 3, and similarly dark skies are available around 45 kilometres to the south-west near Near Commune Léogâne, West.
Even before that, several directions improve noticeably within a short drive from the city, so Port-au-Prince is relatively well placed for observers willing to head out beyond the main light dome.
-
Within 50 km
- Place
- Near Commune Léogâne, West
- Direction
- SW
- Distance (km)
- 42.6
- SQM
- 21.70
- Bortle
- 3
-
Within 100 km
- Place
- Near Commune de Dessalines, Artibonite Department
- Direction
- WNW
- Distance (km)
- 82.8
- SQM
- 21.58
- Bortle
- 3
Long-term trend
Port-au-Prince’s sky brightness has shown a modest improvement over the long term in the available record. The earliest reading is 19.69 SQM, while the latest stands at 20.31 SQM, with an average of 20.27 SQM across 76 datasets.
The overall trend works out to a gradual darkening of about 0.037 SQM per year. That is not a dramatic shift from one year to the next, but across more than a decade it adds up to a sky that is somewhat better than the earliest measurements suggest.
There is still some variation in the record, with values ranging from 19.62 to 20.54 SQM. In other words, Port-au-Prince remains a moderately light-polluted urban sky, but the long-term direction in the data is slightly favourable rather than worsening.
From within Port-au-Prince, the most dependable targets are still the bright showpieces. The Moon, planets and double stars are all well suited to the city sky, and some brighter deep-sky objects can also be picked out with patience.
Because the city sits under a Bortle 5 sky, observers can push a little beyond the bare minimum city-target list. Bright nebulae and the strongest globular clusters are possible, but they usually look better as compact highlights rather than richly detailed objects.
For the Milky Way, faint galaxies and more delicate nebulae, a darker site outside the capital makes a very noticeable difference. Fortunately, Port-au-Prince has that advantage: a short journey can transform what is realistic at the eyepiece or in a camera frame.
- Moon
- planets
- double stars
- brightest open clusters
- bright nebulae such as M42
- brightest globular clusters
- Andromeda Galaxy
- Lagoon Nebula
- Omega Centauri
- larger bright asterisms and rich Milky Way star fields
- Milky Way
- faint galaxies
- broadband nebulae
- dimmer globular clusters
- faint open clusters
- meteor showers
Can you see stars from Port-au-Prince?
Yes — plenty of brighter stars are visible from Port-au-Prince, and the main constellations are easy to recognise in clear conditions. The city’s Bortle 5 sky means star counts are reduced compared with rural Haiti, but it is still a usable sky for casual stargazing.
Can you see the Milky Way from Port-au-Prince?
Usually not clearly from within the city itself. Under a 20.31 SQM sky, the Milky Way is likely to be weak or washed out from most urban locations, but it becomes much more realistic once you get outside the main light dome.
What Bortle class is Port-au-Prince?
Port-au-Prince is Bortle Class 5, commonly described as a suburban sky. In practical terms, that means brighter celestial objects still show well, while fainter deep-sky targets are noticeably affected by skyglow.
What is the SQM reading for Port-au-Prince?
The measured sky brightness is 20.31 SQM. That places the city in a middle ground where urban lighting is definitely present, but not so overwhelming that all astronomical observing is spoiled.
Where are the nearest dark skies from Port-au-Prince?
The nearest named dark-sky option in the supplied locations is Near Commune Jacmel, South-East, about 28.4 kilometres away to the south-south-west, where the sky reaches Bortle 3. Another strong option is Near Commune Léogâne, West, about 42.6 kilometres to the south-west, also at Bortle 3.
Is Port-au-Prince good for astrophotography?
It is workable for lunar, planetary and brighter deep-sky astrophotography, especially with filters and careful processing. For wide-field Milky Way photography or faint nebula work, you will get much better results by heading to a darker site outside the city.
How far do you need to drive from Port-au-Prince for better stargazing?
A worthwhile improvement is available within a fairly short journey. Good dark-sky territory begins roughly 25 to 30 kilometres from the city in several directions, and named nearby sites with Bortle 3 skies lie about 28.4 kilometres away near Near Commune Jacmel, South-East and 42.6 kilometres away near Near Commune Léogâne, West.