alfresco

alfresco (adjective/adverb) , sometimes written as al fresco:
taking place or located in the open air (especially of food and eating)

(The origin of this word is from Italian. al=at fresco=fresh/cool)

Example:
1. Mui Wo Town Square will be extended to offer alfresco dining.
2. I'll be moving to Discovery Bay, come round for drinks, alfresco! (from Dr. Chang's email)