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CALCULATING…
BEST WINDOW—
- CLOUD
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- RAIN RISK
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- VISIBILITY
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- DARKNESS
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- MOON
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- TEMPERATURE
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LOCAL OBSERVING OUTLOOK / SEVEN NIGHTS
Is tonight good
for looking up?
Combine astronomical darkness, cloud, rain, visibility, Moon glare, meteor activity, and the current ISS signal into one honest observing forecast.
LOCATION-SAFECoordinates are rounded before leaving this device.
OFFLINE READINESS
Take tonight into the field.
On iPhone or iPad: open Share, then choose Add to Home Screen.
CONNECTIONCHECKING
FIELD PACKNOT PREPARED
EXPIRES—
CACHED SHELLPREPARING
CHECKING / Weather and ISS guidance is used only while the saved pack remains valid. Astronomy-only guidance is clearly labeled.
01 / CHOOSE AN AREA
Set your observing location.
Use your browser or search for a city. Only coordinates rounded to 0.1°—roughly an 11 km grid—are saved and requested.
OR SEARCH A CITY
CALCULATING DARKNESS AND CONDITIONS…
HOUR BY HOUR
How the night changes.
Cloud, darkness, Moon height, and predicted observing moments on one local timeline.
SMART NIGHT ALERTS / PRIVATE
Your sky watchlist.
Clear nights and time-sensitive astronomy worth planning for. These reminders stay on this device.
HOW SMART NIGHT ALERTS WORK
Weather alerts use the current seven-day forecast. Eclipse, meteor, ISS, and planet opportunities reuse Neon Archive’s local astronomy planners. Calendar reminders are downloadable snapshots, not live subscriptions, and must be refreshed when weather changes.
03 / VISIBLE TONIGHT
What should I look for?
Checking the five naked-eye planets against local twilight and weather.
BEST PLANET TARGET
HOW PLANET VISIBILITY IS ESTIMATED
Positions, rise/set times, brightness, twilight, Moon separation, and forecast cloud are combined into practical guidance. Buildings, terrain, haze, and your exact horizon are not represented.
Matching bright landmarks to local darkness, weather, and Moon glare.
OPEN GUIDED SKY FINDER ↗The shower calendar is being matched to local darkness and weather.
UPCOMING METEOR WINDOWS
Checking for a sunlit station against a dark local sky.
NEXT VISIBLE PASSES
Cloud forecasts become less certain farther out. Local haze, terrain, and light pollution are not fully represented.
DATA SOURCES ↗BEST THIS WEEK
CALCULATING THE STRONGEST WINDOW…
04 / SEVEN-NIGHT OUTLOOK
Plan the week.
Scores compare weather and natural sky brightness during astronomical darkness.
ABOUT THIS TOOL
A practical forecast for looking up.
Tonight combines cloud cover, precipitation risk, visibility, astronomical darkness, Moon interference, meteor activity, ISS passes, and naked-eye planet opportunities into a planning estimate for your rounded observing area.
It is not a guarantee. Local hills, trees, buildings, haze, light pollution, and fast-changing weather can change what you actually see.