Adjusted and Homogenized Canadian Climate Data (AHCCD) consists of weather station datasets (temperature and precipitation only) and has been developed by Environment and Climate Change Canada for use in climate research, including climate change studies. The station records in AHCCD have been adjusted using statistical techniques to detect and remove discrepancies in long-term data records caused by non-climatic factors (e.g., changes in instrumentation, observing procedures, and weather station location or site exposure). Longer time series were sometimes created by combining data from nearby stations. Click on one of the clusters below to download AHCCD available for that region.
The data provided here is daily data. Monthly, Annual and Seasonal data are available via the CCCS Climate Data Extraction Tool
For more information regarding AHCCD Temperature: AHCCD Temperature Documentation
For more information regarding AHCCD Precipitation: AHCCD Precipitation Documentation
For a list of temperature stations: Temperature Station List
For a list of precipitation stations: Precipitation Station list