Related Clues:

• Speculative
• Blowing
• Like a stadium without a dome
• Snobbish
• Nonchalant
• Like an atrium
• Weather forecast, sometimes
• Having no perceptible weight
• Open to breezes
• Blustery
• Vacuous
• Open-roofed
• Not stifling
• Bright and breezy
• Full of hot air