Temperature & humidity

For ideal conditions, your temperature is slightly high (not significantly so, about the top of the ideal range) and your relative humidity is slightly low, again, at about the bottom of the ideal range. If you can hold these constant, you're in good shape.

Ideal, as far as I'm concerned, would be ~68°F, relative humidity 45 to 50 percent.

Note that this also varies slightly with the brand of acrylic paint.

My workroom is unairconditioned, and I live in the Midwest. In winter, I have a steam vaporizer going in the workroom when I'm painting. In the hot, mugid months temperature and humidity are whatever they are, and I compensate by varying my reduction solvents and airbrushing techniques.

I also live in the midwest. My paintbooth is set up in my basement where I keep a dehumidifier running. I can reduce the amount of moisture that I remove from the air. I also use a flood lamp in the booth to act as a heat source since the basement can be cool at times. I could try a lower wattage bulb in an attempt to lower the temperature.

Thanks for the input.