Hilo’s windward rain often yields to clearer Mauna Kea and saddle-road elevations just inland. Near-tropical latitude keeps both northern and southern deep-sky targets in play year-round.
Trade-wind cloud caps the summits while the coast stays socked in — check altitude.
United States · Hawaiʻi Island · windward
Check the live Tonight score for Hilo (cloud, dew, transparency, and astronomical dark), then read the hourly cloud timing chart and moonless dark window on this page.
Use the best clear window clock times after astronomical darkness, and prefer moonless hours when deep-sky contrast matters.
This hub shows moonrise, moonset, illumination, and the longest moonless astronomical-dark interval for Hilo. Open Dark Sky Window for the full ephemeris card.
ISS passes are spottable near dusk or dawn when the sky is dark and the station is still sunlit. This page lists the next spottable pass when available.
Learn: Is tonight good for stargazing? · How to see the Milky Way