Does anyone else have a really hard time keeping baby cool in the carseat? He's in a Chicco Keyfit…

Does anyone else have a really hard time keeping baby cool in the carseat? He's in a Chicco Keyfit 30. Maybe it's just my kid because he gets hot so fast, and maybe it has something to do with until now primarily being in a pickup truck, but every time I pull him out of his carseat, he's so hot, sometimes almost sweaty. It's cooling down outside now so maybe he won't get so hot anymore. And maybe being in a van instead. I dunno, it just seems miserable!