Immune to Wind Effects (Su): Regardless of size, an air dragon's movement is never affected by wind of any strength unless it so chooses.
Cloud Movement (Su): An air dragon can slither on clouds or fog as though on solid ground. The ability functions continuously but can be negated or resumed at will.
Damage Reduction: An air dragon's damage reduction does not function against weapons made from stone (such as a giant's thrown rock).
Steam 13 (2d6 + 6) Fire (heat) damage as when you damage this creature steam seems to appear from its wound in a 10 feet cone radius.

1/day Create Tornado (DC 15 STR or take 4d10 Bludgeoning damage and thrown back 60ft)
5/day — fog cloud
Unlimited Gust Spell (amplified based off age)

Multiattack. The dragon makes two attacks: two with its bite. 
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage.

Breath Weapons (Recharge 5–6). The dragon uses one of the following breath weapons.

Forceful Wind Breath. The dragon exhales a breath in a 30-foot cone. Each creature in that area must make a DC 15 Strength saving throw. On a success the targets are knocked prone. On a fail the targets are sent back 120ft and if they hit a wall they can make a DC 15 Dex saving throw, on a fail they take 32 (6d10) dmg and half as much on a saved throw. if there is other objects in this breaths range it is also sent back 120ft and deals 4 (1d8) dmg to anyone who fails a DC 10 Dex save

Paralyzing Breath. The dragon exhales paralyzing gas in a 30-foot cone. Each creature in that area must succeed on a DC 17 Constitution saving throw or be paralyzed for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

The dragon is able to add 10 to its AC by quickly turning into air where its about to get hit twice per round