How come even in remote, clean places there is air pollution? (days, town)

[WestGuest]

I have noticed using Weather.com for example that no matter on what town you click, there is some pollution - maybe 30 on 100 scale. While 30 is safe -I wonder how pollution gets everywhere.


Skamokawa WA is a tiny,especially scenic place on the Columbia River in SW Wash - no industry really for perhaps 50 miles. It has pollution International Falls MN -same thing - Miami Beach which should have nice breezes - is a bit more polluted Barrow Alaska 40. What pollutes there? Gasoeus bears? Hilo HI


For today there is no place I found under 30-- WHY?

[Strawhats]

I don't know why. One of the only places in the world that I find with almost no pollution is Scotland, and I mean remote Scotland. Dalwhinnie shows an air pollution scale of 2.

[kemahkami]

There are many natural sources of "pollutants." You obviously have things like wildfire smoke and dust, but even the vegetation itself within heavily forested areas can release VOCs due to plant respiration. Then, depending on the specifics regarding atmospheric weather patterns, some days will definitely be worse than others. With Miami Beach, for instance, the current winter season features the passage of cold fronts, which are the leading edge of high pressure systems - these high pressure systems, as the settle in the area, can reduce wind speed, allowing whatever particulates are present in the area to build up to the results seen in those monitors

[distracted85]

Think any areas that don't get much wind are susceptible.

[WestGuest]

But the places with wind can have pollution blown in-- you cant win.