Related Clues:
- Fog intensified by smoke
- Writing about sporting blunder in bad visibility
- Cause of low visibility in some cities
- "When the ___ clears in Los Angeles, UCLA" (pun)
- The pool — new problem for motorist
- Dark cloud on the horizon?
- Hazy air stuff
- Industrial polluted air
- Urban air hazard
- Urban cause of some lung issues
- Choking fog
- Heavily polluted air
- Brown sky cause
- Clean Air Fund target
- Hollywood haze