How's your summer???
Hot, Hot, Hot!!!!
Personally I love the heat but for those who don't, there are great alternatives to getting your exercise outside.
Mall walking! You can do it any time, any mall! Some malls open early (as early as 7am) for mall walking enthusiasts.
Your local community/recreation center has activities scheduled throughout the summer. Even if you just go to play cards or ping-pong, at least you'll be in a nice air conditioned area.
Go to your local library and read a magazine (free), rent a movie or DVD, walk around the building or lobby while you're there.
Go to your local community college and walk around the buildings, see whats happening on campus, maybe sign up for a class.
There are so many possibilities, you just have to go ahead and go!!