Related Clues:
- Feature of a bad air day?
- L.A. haze
- Visible air
- Deleterious precipitation
- City skyline blurrer
- Air condition?
- Pollution that may sting the eyes
- Traffic consequence
- Certain environmental concern
- Big city pollution problem
- Scenery spoiler
- EPA concern *
- Its main ingredient is ozone
- Visible air pollution
- Fog polluted by smoke