You might also try a “swamp cooler” to cool down with:

Grab a bucket and a fan, and pour ice water into the bucket. Put the fan on behind the bucket and sit in the cool breeze it makes. It’s like having your own little a/c unit.

The one downside to this is that the evaporating water will eventually make the air humid and make it harder for your sweat to cool you down, but it works great in the short term.