Ironically, it is in the single digets outside but my classroom temp is currently running at 80. We have no windows so the air is very dry and there is not breeze circulation. My kids are getting nosebleeds from the dryness and the static elecrticity is so bad I get zapped everytime I open my dooe or make contact with another human. I got so sick of it, I went out and bought 2 humidifiers for my classroom this morning. Oddly, the warmth seems to make some kids contentious and the rest of them sleepy.