The Darkest Skies
in Puerto Rico
Access the definitive rankings of the top 10 National Park Service Champions and International Dark Sky Parks in Puerto Rico. Explore our comprehensive directory of 53 Puerto Rico cities to find the perfect dark sky spot with verified scientific data.
National Park Service Reports
The darkest verified spots in the state. Pro Tip: Dark sky reports reveal their best details through precision optics.
Boca Chita Key
Biscayne NP
Local Relevance
For observers in Puerto Rico, Boca Chita Key serves as the definitive baseline for high-altitude transparency and localized skyglow data.
"Limiting magnitude star of 6.8 (in Ursa Major) was only seen later in the night (0230) after at least 2 hours of observing time away from the light dome. Warm temperatures helped with visual acclimation. Most all of the local glare sources present the previous night were gone, which also helped the viewing. The entire landscape was well illuminated from the distant light dome."
Certified Dark Sky Parks
International Dark Sky Association certified locations. Visiting a park? Don't forget a red-light flashlight to preserve the dark.
Big Cypress National Preserve
Big Cypress National Preserve is an IUCN category IV (habitat/species management area) site consisting of 290,000 hectares of U.S. federal lands in southern…
Official Details →Kissimmee Prairie Preserve State Park
Kissimmee Prairie Preserve State Park (KPPSP), a 54,000 acre property in central Florida, is one of the largest parks in the Florida State Parks System.
Official Details →Gearing Up for Puerto Rico Nights
"The geographic diversity of Puerto Rico means your gear needs to be as adaptable as the terrain; we recommend a balance of heavy-duty optics and portable power for state-wide exploration."
The Puerto Rico Field Kit
Every dedicated Puerto Rico enthusiast eventually curates a setup that can scale from suburban driveways to the most isolated dark sites in the state.
Browse Cities
Find detailed scientific reports for 53 unique locations across Puerto Rico.