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Does temperature and humidity cause complications with airbrush priming similar to using a spray can? (I have both Vallejo surface primer and AK Interactive white primer).

I can't find an answer for this on the forum or on the webnets.

It can, but usually people airbrush in their houses where the environment is more stable than outside where people usually use rattle cans, and it’s typically easier to adjust for environmental conditions in how you spray.

One area that an airbrush is less affected is that rattle cans have a pressure that is dependent on the temperature, whereas airbrushes are usually run off a compressor with a regulator that maintains pressure.

But airbrushes can have the same problem in terms of the spray picking up moisture in the air before it hits the model, paint drying in the air too fast if it’s too hot, or pooling if it’s too cold/damp. Airbrush compressors can also create moisture issues in hotter weather or if the compressor is being overworked, but those problems are usually solved by a 2nd moisture trap on the airbrush side of the air hose (after the air has cooled through the hose immediately prior to hitting the airbrush).

Good to know, thanks. I've done airbrushing outside because I don't have a respirator. But it's hot and humid right now, and will be raining or humid for probably the next week, so I bought a mask today so I can take things indoors.

You definitely have a different experience using an airbrush than a rattle can. First off, you can go slightly thinner with your paint to help any 'piling' that could occur; you do not have any of the can propellent additives that can affect the paint in temp and humidity conditions; and most importantly, your airbrush will atomize the paint much more effectively than a rattle can, which is due in part to having a thinner consistency in the paint and just the mature of the airbrush itself.

So, do I get the 'fuzzies' when using a rattle can during temp/humidity and also for no reason at all? Absolutely. Does the same thing happen to me when using an airbrush? Super rare and can only think it happened when I had my paint not thinned adequately.