sky cover

American  

noun

1. the amount of the sky that is covered by clouds, fog, haze, smoke, or the like, usually expressed in tenths of the total sky.

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Etymology

Origin of sky cover

First recorded in 1955–60

Example Sentences

But the National Weather Service does track the average sky cover between sunrise and sunset each day.

From Los Angeles Times

Thankfully, you can check the National Oceanic and Atmospheric Administration’s website for Southern California and click “sky cover” and a forecast time to see the expected cloud cover.

From Los Angeles Times

If you're a fan of meteor showers and, potentially, a meteor "storm", you'll want to pay attention to the sky cover forecast for Monday night.

From Seattle Times

NWS currently forecasts a sky cover of around 74% in Seattle around that time.

From Seattle Times

It got a maximum rating for “sky cover” in the preliminary report on the day released by the National Weather Service.

From Washington Post