ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the British Columbia, Canada Air Quality Monitoring Agency (www2.gov.bc.ca)
Note that the measurements for PM2.5 (fine particulate matter) and PM10 (respirable particulate matter) are taken from the station: Powell River James Thomson School and the measurements for O3 (ozone) and NO2 (nitrogen dioxide) are taken from the station: Courtenay Elementary School