Use your local weather to determine when it's getting hot and turn on your A/C with Ambi Climate.
If
Current temperature rises above
This Trigger monitors your local temperature and fires whenever the temperature rises above the value you provide.
Then
Run your A/C in comfort mode
This Action will turn on your A/C in the specified room, and run it in Comfort mode.
Discover more time saving integrations for Ambi Climate and Weather Underground