red sun
Horizon at evening
A red sun appears when sunlight passes through dense atmosphere, dust, or smoke, scattering shorter wavelengths and leaving reddish tones dominant.
This occurs naturally at sunrise and sunset when light travels a longer path through the atmosphere.
Wildfire smoke or volcanic ash can produce a red sun even at midday: The red sun hung over the valley like a warning.
- crimsonDeep purplish-red shade
- horizonApparent earth-sky meeting
- duskDimming after sundown
- dawnDay's first glow
- golden hourWarm-lit period near sunset
blood · scarlet · haze · smoky · apocalyptic · end of days · heat · ember · glow · burning · fiery · orange · sky · silhouette · desert · desert heat · dust storm · wildfire