Canadian Air and Precipitation Monitoring Network

The Canadian Air and Precipitation Monitoring Network (CAPMoN), operated by Environment and Climate Change Canada (ECCC), is designed to study the regional patterns and trends of atmospheric pollutants such as acid rain, smog, particulate matter and mercury, in both air and precipitation. The network began operating in 1983. CAPMoN updated and replaced two older networks known as the Canadian Network for Sampling Precipitation (CANSAP) and the Air and Precipitation Network (APN). The integration of APN as part of CAPMoN extended the data record as far back as 1978.

The Network was originally designed to help Canadians understand the sources and impacts of acid rain. This included integrated measurements of wet deposition (through rain or snow) and (inferential) dry deposition, as well as the ambient concentrations of acid-forming gases and particles. The regionally representative sites required to understand the sources and how long range transport impacts the Canadian environment have proven invaluable for a wide range of atmospheric issues.

Network map and site list

Map of Canada showing approximate location of CAPMoN sites on the territory and their status as active, suspended or closed
Site name Province/Territory Status Measurement type
Algoma ON Active
  • Precipitation
  • Air
  • Ground-level ozone
Alert NU Active
  • Ground-level ozone
Bonner Lake ON Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Continuous PM2.5/PM10
Bratt's Lake SK Active
  • Precipitation
  • Air
  • Ground-level ozone
Chalk River ON Active
  • Precipitation
  • Air
Chapais QC Active
  • Precipitation
  • Air
  • Ground-level ozone
Egbert ON Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
  • Total gaseous mercury
  • Integrated PM2.5/PM10
  • Continuous PM2.5/PM10
Experimental Lakes Area ON Active
  • Precipitation
  • Air
  • Ground-level ozone
Flat Valley SK Active
  • Precipitation
  • Air
  • Ozone
  • Ground-level
  • Ammonia
Frelighsburg - B QC Active
  • Precipitation
  • Air
  • Ground-level ozone
Goose Bay NL Active
  • Precipitation
  • Ground-level ozone
Joussard AB Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Continuous PM2.5/PM10
Kejimkujik National Park - B NS Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
  • Total gaseous mercury
  • Ammonia
Lac Édouard QC Active
  • Precipitation
  • Air
La Grande-4 QC Active
  • Precipitation
Longwoods ON Active
  • Precipitation
  • Air
Marten River ON Active
  • Precipitation
Pennsylvania State University PA (U.S.A.) Active
  • Precipitation
Pinehouse Lake SK Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
  • Ammonia
Pickle Lake ON Active
  • Precipitation
  • Ground-level ozone
Saturna BC Active
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
  • Total gaseous mercury
Searchmont ON Active
  • Precipitation
  • Air
  • Ground-level ozone
Snare Rapids NT Active
  • Precipitation
  • Ground-level ozone
Sprucedale ON Active
  • Precipitation
  • Air
Stephenville NL Active
  • Mercury in precipitation
Warsaw Caves ON Active
  • Precipitation
Wood Buffalo National Park NT Active
  • Precipitation
  • Air
  • Ground-level ozone
Bay d'Espoir - B NL Suspended
  • Precipitation
  • Air
Esther AB Suspended
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
Island Falls SK Suspended
  • Precipitation
  • Air
Jackson NS Suspended
  • Precipitation
Longlac ON Suspended
  • Precipitation
Mingan QC Suspended
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
Roundtop Ridge QC Suspended
  • Ground-level ozone
Westport ON Closed
  • Precipitation
Kinghurst Forest Reserve ON Closed
  • Precipitation
Burnt Island ON Closed
  • Precipitation
  • Mercury in precipitation
Cluff Lake SK Closed
  • Precipitation
Cormack NL Closed
  • Precipitation
  • Mercury in precipitation
Cree Lake SK Closed
  • Precipitation
  • Air
Dorset ON Closed
  • Precipitation
Fraserdale ON Closed
  • Ozone
Harcourt NB Closed
  • Precipitation
Island Lake MB Closed
  • Precipitation
Longpoint ON Closed
  • Air
McCreary MB Closed
  • Precipitation
Montmorency QC Closed
  • Precipitation
  • Air
  • Ground-level ozone
Nitchequon QC Closed
  • Precipitation
Port Cartier QC Closed
  • Precipitation
Priceville ON Closed
  • Precipitation
Point Petre ON Closed
  • Precipitation
St. Anicet QC Closed
  • Mercury in precipitation
Sutton QC Closed
  • Precipitation
  • Air
  • Ground-level ozone
Kejimkujik National Park NS Closed
  • Precipitation
  • Air
  • Ground-level ozone
  • Mercury in precipitation
  • Total gaseous mercury
  • Mercury integrated PM2.5/PM10
  • Ammonia

Related links

Contact us

CAPMoN Manager
Environment and Climate Change Canada
4905 Dufferin St
Toronto ON  M3H 5T4
Canada

Email: capmon@ec.gc.ca

Telephone: 1-855-687-4455
Fax: 1-416-739-4606

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