ambient air quality
type: Concept
broader: pollution and waste
definition: Ambient air quality refers to the concentration of gases, particles, or other elements in the outdoor atmosphere—from either natural or anthropogenic sources. The term quality is objective and gives an indication of what the concentration of a constituent of air is in relation to certain thresholds or standards. [Source: Encyclopedia of Geography; Ambient Air Quality]

concepts
type: Collection
type: ConceptGroup
member: ambient air quality

pollution and waste
type: Concept
narrower: ambient air quality