CloudFree Astronomy

Forecast sky conditions for the places you actually observe. Add custom sites, explore high-signal overlays, and see at-a-glance charts tuned for astronomers—then share your best locations with friends or your club.

🌎 View the Sky Map
Browse North America, open public sites, or create your own observing location.

Custom Locations

Create private observing sites with a single click on the map. Your home page can jump straight to your favorite site.

Home Site Quick Access

Premium Overlays

See the details that matter: cloud cover, transparency, seeing, wind, temperature, humidity, and twilight/“darkness band” timing in one compact chart.

Canada / NOAA / MetNo Legend & Tooltips

Animated Maps

Follow weather trends at a glance with smooth animated layers and GOES cloud satellite (US sites), so you can plan the next clear window.

Time-Lapse GOES (US)

Detailed Forecasts

Drill down into day-by-day values for Canadian, NOAA, and MetNo models—with readable accordion summaries and local time conversions.

Daily Details Local Time

Club Sharing

On Club, generate one-time share links and give others full access to your site’s premium data. Base 50 active shares (links + members), +100 per add-on pack.

One-Time Links 50 Base Shares

Fast & Lightweight

We pre-compute charts for speed, then enhance with overlays/hover tooltips in the browser. It just feels snappy.

Pre-rendered Charts Instant Hover

Free

  • View all public sites
  • Save a Home Site
  • Access sites shared with you

Standard

  • 1 custom location
  • Premium overlays & charts
  • View shared sites

Pro

  • 3 custom locations
  • Premium overlays & charts
  • View shared sites

Club

  • 5 custom locations
  • Share links (50 base, +100/add-on)
  • All Pro & Premium features

Membership helps cover server hosting and the compute needed for rapid chart generation and future features. See plans.