Observatory Tools

Sky Conditions Planner

Scrub forecast cloud cover across a live map, hour by hour into the future, with seeing, transparency, darkness windows and moonrise for any site.

SITE LAYER FRAME

Next 6 hours

Fetching point forecast…

48-hour outlook: clouds, darkness & moon

Building chart…
total cloud low mid high astro darkness moon above horizon hourly imaging score

Point forecasts & geocoding by Open-Meteo (CC BY 4.0). Cloud-forecast map layers from the MSC GeoMet service, Environment and Climate Change Canada. Satellite & radar frames by RainViewer. Basemap © OpenStreetMap contributors © CARTO. Seeing and transparency are heuristic estimates from jet-stream winds, humidity and aerosol depth. Treat them as guidance, not gospel.