AAQC
Ambient Air Quality Criterion (Ontario)
AQHI
Air Quality Health Index
CAAQS
Canadian Ambient Air Quality Standard
CCME
Canadian Council of Ministers of the Environment
CO
carbon monoxide
NO
nitric oxide
NO2
nitrogen dioxide
NOx
nitrogen oxides
O3
ozone
PM
particulate matter
PM2.5
fine particulate matter
SAHA
Smog and Air Health Advisory
SAQS
Special Air Quality Statement
SHARP
Synchronized Hybrid Ambient Real-time Particulate
SO2
sulphur dioxide
TEOM
Tapered Element Oscillating Microbalance
TRS
total reduced sulphur
U.S.
United States (of America)
VOCs
volatile organic compounds
WOE
weight of evidence
km
kilometres
kt
kilotonnes
µg/m3
micrograms (of contaminant) per cubic metre (of air) – by weight
ppb
parts (of contaminant) per billion (parts of air) – by volume
ppm
parts (of contaminant) per million (parts of air) – by volume