Not in the evening, the setting sun. The 'red sky at night' rhyme is more than an old wives' tale though and has some meteorological foundation - in England at least. Fixing problems with the Sky Sports Red Button. To explain why we'll need to know why clouds sometimes appear red and how that may be used to predict the weather. Light pollution doesn't cover it, as the amount of light pollution is average for the area. This usually indicates high pressure and stable air coming in from the west. Usually, weather moves from west to east. Much moisture in the air at the end of the day is normal. Speaking of forecasting, what about the saying: "Red sky at night, sailor's delight; red sky in morning, sailors take warning." In order to understand why “Red sky at night, sailor’s delight. Sure, we're all familiar with sunsets, and how they appear to turn the entire sky close to the horizon red at night. In the mid-latitudes, the prevailing winds are westerlies. In this way, clouds act as a screen on which nature’s colors are painted. By Sid Perkins Jun. This would create a red sky at night with fair weather to follow. Red sky at night, sailors delight. Make sure the Sky Q box is connected to the Broadband: On your main Sky Q box, press Home on your Sky Q remote, then select Settings, followed by Status. ‘Bright night’ glowing sky mystery solved. For example, clouds will appear white or gray at midday and orange or red at sunrise or sunset. The sky takes on these vivid hues due to a phenomenon called Rayleigh scattering. Simply being overcast fails to cover it, as it is usually a white/grey color on overcast nights. Why is Red Light Used for Night Vision? Usually, weather moves from west to east. The luminosity of the night sky seems to be magnified after rains, i.e., when there is cloud cover in the sky. When we see a red sky at night, this means that the setting sun is sending its light through a high concentration of dust particles. One hundred billion galaxies, all full of millions of stars, seems like a lot but it isn’t nearly enough to make the night sky as bright as day. And if you have a news tip, correction or comment, let us know at: community@space.com. The interaction of sunlight with matter contributes to the color appearance of our surrounding world. Red sky in morning, sailor’s warning” can predict the weather, we must understand more about weather and the colors in the sky. "'Red sky at night, shepherds delight' can often be proven true, since red sky at night means fair weather is generally headed towards you. Any scientific truth to that? Red sky in morning, sailor’s warning” can predict the weather, we must understand more about weather and the colors in the sky. Why are sunsets red? By Aparna Kher. This is why sunsets or sunrises are so much prettier when some clouds are available to show us the colors.