system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are mosquitoes more active at sundown?

I go outside on my front porch for smoke breaks at all different times of day and night. Since mosquitoes in Texas are nothing unusual I do get bitten when I go out but I've noticed in the very late afternoon, early evening around sunset there are more of them. If I go out at late at night, dawn, morning or early afternoon I get a bite or two. I go out around 6-9 or so and I'm a buffet. Why?
gpt
Their skin is really thin, so thin that the sun kinda dries it out and it's not good for them to be in the full sun, but when the sun goes down, it's nice and moist and they can fly around without the harsh sun harming their fragile skin.