The society for people who love the sky

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Today's Cloud-a-Day

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Cloud of the Month

Cloud of the Month for August 2022

August 2022

Lacunosus are clouds clouds that look like foam bubbling on ocean waves. We explain how they form in Cloud of the Month for August...

Cloud Appreciation Day


Join our worldwide event on Cloud Appreciation Day, 2022, when we will be launching a ‘Memory Cloud Atlas’ onto which anyone anywhere will be able to post an image of their sky, locate themselves on a map, and share with the world how they feel about the sky and the clouds...

New from our Members

Cloud Poetry
Kate Edge, Member 30,633, wrote this piece whilst ...
Cloud Music
Sean McGowan recently sent through some music he ...
A sunset with crepuscular rays over Hickory, North Carolina, US.
Cloud Poetry
Sara Austin Bailey, member 50,249 sent us this ...
Cloud Art
Daryl D. Johnson (Member 45,193) paints from her ...

Get our Cloud-a-Day App

Our free Cloud-a-Day app is the perfect way to start your journey to becoming an expert cloudspotter. It has a library of descriptions and reference images for 58 different clouds and optical effects and it uses the power of AI to help you identify the clouds you spot. Members can also view the Cloud-a-Day in the app that they get as part of their subscription.

Join us on a Sky Holiday

Join us for a once-in-a-lifetime expedition to see the Northern Lights from the wild beauty of Northwest Canada.

Get the Book

A Cloud A Day is our beautifully illustrated book containing 365 skies selected by the Cloud Appreciation Society. It includes photographs by our members from around the world of stunning and fascinating formations, as well as examples of clouds depicted by great artists and even formations in Space, such as interstellar clouds and those on other planets. This is the ultimate dip-in-and-out book for sky lovers. Each image is accompanied by an enlightening explanation, a revealing snippet of cloud science, a surprising story or an uplifting quotation. Each entry will teach you about the sky in a fun and uplifting way.

A Survival Kit for the Imagination

Our downloadable lesson plans and resources for schools and homeschools teaching about the sky.


Surreal Cloudscape Series

CGI artist and painter, Matt Wilson, has sent in his series Surreal Cloudscapes.  Matt created the CGI cloudscapes in the recent ‘Lightyear’ Pixar movie, but during Covid isolation he began experimenting with creating cloudscapes on his own.  He calls his art series Sentinels, and they were recently featured in the Solo Show in New York […]

Our Kickstarter to launch a ‘Memory Cloud Atlas’ for Cloud Appreciation Day

We have just launched a Kickstarter to create a website for Cloud Appreciation Day on Friday September 16th. The Memory Cloud Atlas will be a free resource for anyone, anywhere to share their sky on this day and the feelings it elicits in them. Help us record a worldwide snapshot of richly diverse perspectives on […]

Cloudspotting on Mars

NASA is researching clouds in the upper atmosphere of Mars and it needs your help to spot them.  If you’re interested in doing some extra-terrestrial cloudspotting, join in with NASAs Citizen Science project to help recognise the tell-tale signals of Martian clouds on the readings from the Mars Climate Sounder, an instrument on the Mars […]