Does warm air or cool air have high pressure? thanks

Answer 1

I cool air would have higher pressure than warm.
Warm air is less dense than cool air &, therefore, it would have a lower pressure than cool air. Warm air also rises more quickly b/c it is less dense.

Answer 2

This site has your information.

http://www.usatoday.com/weather/tg/whighlow/whighlow.htm