Air pollution data:
- Technical Background Document: This is a guide prepared for Your Environment by environmental scientist Alannah Campbell that explains the formation and distribution of the main air contaminants shown here. It also explains the current air quality guidelines in Canada.
- Concentration data: Environment Canada NAPS archive. The current station list is here.
- Zipped folder of the CSV files used to generate all the air pollution graphs here.
- Provincial records and current hourly readings (where supplied): BC Alberta Saskatchewan Manitoba Ontario Quebec New Brunswick Nova Scotia PEI Newfoundland
- Emissions Data: CO2 (Carbon Dioxide Information Analysis Center, Oak Ridge USA)
- Emissions Data: Other Air Contaminant Emissions (National Pollution Release Inventory, Environment Canada)
Ambient Air Quality Standards:
Water pollution data and Standards:
- Provincial records: Ontario. Zipped folder of river quality data is here.
- Federal Standards: Canadian Council of Ministers of the Environment
- Environment Canada homogenized records.
- Note: The program that makes the graphs takes the names of NAPS station locations and looks for a match to a temperature station. If there is no station with the same community name it uses the latitude/longitude records to find a match in the same grid cell. If there is no match in the same grid cell, a match in a nearby grid cell is used. The station ID used is in the lower left corner of the temperature graph. You can compare station IDs to location names using this table.
- DATA USED FOR CHARTS: The CSV files organized by location are in this zipped folder. The headings v1-v12 denote months January - December respectively.
- TEMPERATURE TRENDS: An Excel file with the trends (deg C/year) by month for each location can be downloaded here. It is very important that you read the explanatory note in order to understand what the numbers in that file mean.