Dark Sky Finder

01 / Set your night

Where are you leaving from?

Search, use your position, or tap anywhere on the map.

Origin

Seattle, Washington

Night of Weather: up to 16 nights · haze: up to 7 nights

Max travel radius 100 mi

Observing goal

Units

“Night of” spans two dates: astronomical darkness begins after dusk on the selected date and ends at dawn the next morning.

Best tonight

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Reading the forecast

The strongest usable observing window will appear here.

Meteor shower mode

Radiant position is being calculated. Peak rates favor the hours after midnight.

Data health & freshness

Weather

Confidence

Haze / AQI

Elevation

Light atlas

No forecast fetched yet.

Haze guidance covers only about 5–7 days. Missing inputs lower confidence instead of silently pretending the forecast is complete.

Recheck every 15 minutes while open

02 / Compare the field

Top five sites

Circles are unvetted forecast samples. They are evenly spread across your radius before weather data is fetched—not selected because they are known destinations.

Diamonds are named observing sites. They come from the built-in list of dark-sky parks and known access points.

Likely-water samples will be removed using terrain elevation.

Waiting for forecastYour clearest contiguous dark stretch will appear here.

Rank by

Destinations only Milky Way yes Show all samples

Select up to three sites to compare.

Scanning starts automaticallyScores always include a full component breakdown.

Map layers

Night map: dims roads and labels for field use. It does not measure darkness.

Light pollution · 2025 52%

<5050+65+80+

Circles = unvetted samples · diamonds = named observing sites

Reading the nightGenerating candidate areas…