Show HN: Nightwatch – a Mac menu-bar app that tells you when tonight is clear

Re:Show HN: Nightwatch – a Mac menu-bar app that tells you w... by jareds on Monday October 05, 2026 @04:09PM (#49969964)

Are there API's that provide simple information on if it's a good night for astronomy? I am totally blind, but would like to know when it's a good night for my kids to use there telescope. I don't use a Mac as my primary machine, and xasteria is not accessible.

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Re:Show HN: Nightwatch – a Mac menu-bar app that tells you w... by misnome on Monday October 05, 2026 @07:42PM (#49972278)

clearoutside.com, which is pretty reasonable at predicting cloud cover, says it gets the data from Meteosource.

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Re:Show HN: Nightwatch – a Mac menu-bar app that tells you w... by leetrout on Monday October 05, 2026 @10:51PM (#49973594)

In addition to the sibling:

https://www.astrospheric.com/

https://observingwindow.com/

https://clearskys.app/

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Re:Show HN: Nightwatch – a Mac menu-bar app that tells you w... by delphidolphin on Tuesday October 06, 2026 @12:14AM (#49974087)

Hi - the seeing and transparency information in Nightwatch come from 7Timer and Open-Meteo, and both publish free APIs.

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Re:Show HN: Nightwatch – a Mac menu-bar app that tells you w... by delphidolphin on Tuesday October 06, 2026 @01:29AM (#49974562)

Hi jareds - your reply prompted me to look at what accessibility options are already in Nightwatch, as I'm ashamed to say I'd not done enough in this respect.

Keyboard navigation, the ability to change text-size, and voiceover support will all be in the next version.

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