• Clear Outside 1
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Clear Outside

Reliable weather forecasts for astronomers with an emphasis on cloud cover.
Features include:


• Seven day hourly forecasts, updated hourly.
• Low, medium, high and total cloud cover.
• Moon rise/set times and phase.
• Sun rise/set and transit.
• Civil/nautical/astronomical darkness.
• International Space Station (ISS) pass-over information.
• Location search automatically provides a forecast for your location.
• Save favourite locations for easy access.
• Covers daytime too so also useful for solar observers/imagers.

Updated hourly. Frequent hourly updates are important because often the clear spell between showers provides excellent seeing and 30-minutes under a clear sky with a grab-&-go telescopes is pure gold!

Did you notice the ISS pass-over information? The times are precisely calculated for your location and displayed alongside the cloud forecasts so it has never been easier to observe. It is our favourite feature :-)

Also includes regular weather data (wind, rain, frost, temperature, dew point, etc) so perfect for those wanting a detailed weather forecast, without cutesy graphics.

We have had a lot of fun building and testing Clear Outside and are keen to to develop it further so if you find it useful or have suggestions, please let us know.

Category : Weather

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Reviews (9)

Toa. Feb 12, 2020     

App does its job perfectly! It works perfectly for checking during the day if it's going to be good weather for seeing stars or the moon or ISS. It's filled to the brim with all the information possible in a really nice table. The only problems are that the experimental features are hard to understand, like what is 7t seeing? A FAQ or a legend would make this easier to understand. Also, the app lags when scrolling with experimental features on (my phone is capable enough) I hope to see a reply!

Mar. F. Apr 20, 2019     

I've been using the app for quite a long time now. I love that it gives so much information, however the cloud cover is quite often inaccurate. Several times it showed overcast but the sky was completely clear, and other way round. It needs some update - last update just after release in 2015? A bit long time ago.... Developers, please make it more accurate.

Sim. P. Apr 24, 2019     

I find this app very accurate and useful for planning sunrise photo shoots. I can plan ahead and know if there will be good cloud cover, or if the conditions won't be right and I am better to stay in bed! I would like a bit more information on how to read all the charts though. But overall does what I need.

Bob. N. May 10, 2022     

Really useful app: not a perfect guide, but pretty close - certainly if I add cloud radar information. I use it a lot. (A help tab telling me what the experimental rows refer to would be beneficial.)

Mic. B. Dec 24, 2021     

Accurate about 30 percent of the time. I've used this app for about two years and have noticed forecast get more inaccurate. Predicted a mixture of high and medium clouds, but arrived to a clear sky. Very disappointing. Deleted.

Joh. T. Jul 4, 2019     

excellent weather app, showing daylight and moon hours as well as a very detailed fog, rain, and cloud forecast which are difficult to find where I am. My major issue is that there's no help tab. why are some hours coloured red and some green? what does visibility refer to, is it a rating out of 10 or is it the visibility distance in km or miles or something else? please provide more info with the app.

Vir. K. Jul 2, 2020     

Mostly accurate. Do not understand why it predicts rain and clear skies at the same time. Also, when starting after the latest Android OS update 10.2.2, it tells me that it was designed for an older OS but when I look for updates, Google store indicates that 2015 is the latest. Is this correct or was replaced with another app?

Ran. M. Sep 30, 2021     

Sometimes it's right. Sometimes it's completely wrong. For example, my area is supposed to be clear right now. It is 100% overcast. If it can't get the current conditions correct, how can it predict future cloud cover. Very frustrating!

Ovi. D. Sep 27, 2020     

Very good forecast but the app has a few problems. It is extremely sluggish and I would much rather prefer the PC website format, rather than having to scroll through a lot of days to find the forecast for the day you're interested in.