Dispel Dust

Choose one patch of dust within range. Any dust older than 6 hours is dispelled. For any dust newer than 6 hours, make an ability check using your spellcasting ability. The DC equals 10 + the dust's age (in hours). On a successful check, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you automatically dispel the dust if the number of hours the dust has been there is equal to or less than the level of the spell slot you used.