| Fog |
| Haze |
| Pea soup |
| Cough cause |
| EPA concern |
| Sun blocker |
| Visible air |
| Weather word |
| View blocker |
| Eye irritant |
| L.A. problem |
| Air condition |
| Urban problem |
| Airport hazard |
| Pollution item |
| Pollution type |
| Scenery spoiler |
| Weather report? |
| Urban pollutant |
| Urban pollution |
| Pollution factor |
| Portmanteau word |
| Skyline obscurer |
| Kind of pollution |
| Environmental woe |
| Weather condition |
| Pollution problem |
| Form of pollution |
| Visibility problem |
| Visibility reducer |
| Ecologist's concern |
| Visibility obstacle |
| Something in the air |
| Industrial pollutant |
| Visibility hindrance |
| Environmental problem |
| Environmental concern |
| Atmospheric condition |
| Environmentalist's concern |
| It can leave you breathless |