halas, unfortunately our low visibility is made of this:
Respirable Suspended Particulates (2.44 times WHO levels)
(that's the bigger PM10 particles, the really dangerous PM2.5 are not published by the government)
Sulphur Dioxide (2.05 times WHO levels)
Ozone (1.69 times WHO levels)
(data snapshot as of 02.AUG 22:30 local, near the airport)
I'm not saying I'd prefer to breathe in desert dust though ...