Who else is heat-wave exercising?

I'm on week 2 of FB30, and also week 2 of a heat wave - I'm waiting until later in the evening to exercise, but it's still in the 80's in here with 74% humidity - and I'm sweating buckets! I've been doing the lower impact modifications, and am definitely am not pushing myself as hard as I could... Who else out there is working out through this heat? Any tips?