why are things dirtier/appear dirtier in more humid areas?

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recently moved from dry Colorado to humid southern coastal California and outdoor chairs seem to get dirtier faster, especially after overnight/early morning dew. having to clean the house bathrooms more frequently since shower steam is somehow making the counters appear dirty. Is it just my perception or is this a thing? notice it more with bathroom areas so wondering if it’s the humidity. any suggestions to combat this?

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5 Answers

Anonymous 0 Comments

Stickyness lol is that a word?

Anonymous 0 Comments

Costal? Salt in the air.

Anonymous 0 Comments

Water vapor can hold the dirt and help it stick to other surfaces, even when it evaporates. Think of it like this, you could dust your furniture and then take that collection of dust as a big dust bunny and blow it on something (dry air) and it will likely just bounce off and drift around. Now spray that dust bunny with water from a spray bottle and blow it on something. It will now stick to it and could even stay stuck to it when the water in it dries. Same thing with dirt and other small debris.

Anonymous 0 Comments

LA is has improved its air quality, but there is still a lot more people and it still has a lower air quality index than Denver.

While likely more humid than Colorado, Los Angeles is not what anyone would really call humid. Los Angeles is also a desert and gets much less precipitation than Colorado which means it gets less natural washing.

Anonymous 0 Comments

Throw a hand full of dirt against a dry surface. Now throw a hand full of dirt at a wet surface. Solids “stick” to wet stuff due to surface tension of the water, evem on a microscopic level.

In the case of outdoors, that applies to car fumes especially.