skyglow 
noun [mass noun]
Brightness of the night sky in a built-up area as a result of light pollution: at night the stars and planets are obliterated by glare and skyglow...
- Light pollution occurs when too much artificial illumination enters the night sky and reflects off airborne water droplets and dust particles causing ‘skyglow’.
- A combination of skyglow, clouds, and insufficient aperture kept me from spotting it, though the sites farther east were much darker.
- It's the skyglow, from artificial lights and smog.
- portion control
- portion-controlled
- portioner
- portionist
- portionless
- portion money
- portière
- portièred
- Port Jackson
- Port Jackson willow
- Portland
- Portland arrowroot
- Portland beds
- Portland cement
- Portlandian
- Portland, Isle of
- portlandite
- Portland limestone
- Portland oolite
- Portland Place
- Portland sago
- Portland sand
- Portland screw
- Portland spurge
- Portland stone