https://www.kaggle.com/datasets
http://www.skywatch.co/ (Hard to use)
https://namara.io/#/ (From https://codx.ca/)
http://www.gapminder.org/data/ (519 relevant datasets) (Thanks, Jacob!)
https://github.com/caesar0301/awesome-public-datasets
https://data.world/ (Requires account)
http://open.canada.ca/en (search for files types such as json/csv/shp)
https://www.ontario.ca/search/data-catalogue
https://open.alberta.ca/opendata
https://www.donneesquebec.ca/fr/
https://www1.toronto.ca/wps/portal/contentonly?vgnextoid=9e56e03bb8d1e310VgnVCM10000071d60f89RCRD
Historic Canadian Weather Data: ftp://ftp.tor.ec.gc.ca/Pub/Get_More_Data_Plus_de_donnees/
https://waterdata.usgs.gov/nwis
Canadian incomes: http://open.canada.ca/data/en/dataset?q=poverty
https://ourworldindata.org/hunger-and-malnutrition/ https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/JL16EW
http://airqualityontario.com/science/data_sets.php (the historical air quality and smog datasets are very good. Make your own scrapper to help :) )
http://ec.europa.eu/eurostat/web/education-and-training/data/database (European)
http://stats.oecd.org//Index.aspx?QueryId=70670
https://data.europa.eu/euodp/en/data/dataset/gender-equality-index
https://data.unicef.org/topic/water-and-sanitation/drinking-water/
https://www.kaggle.com/lislejoem/us_energy_census_gdp_10-14
https://www.ontario.ca/data/2006-commercial-vehicle-survey-origin-and-destination (this dataset can be compared with other years)
https://www.kaggle.com/bmkramer/101-innovations-research-tools-survey
http://climate.weather.gc.ca/prods_servs/engineering_e.html http://cwfis.cfs.nrcan.gc.ca/ha/nfdb
https://waterdata.usgs.gov/nwis https://www.nodc.noaa.gov/OC5/SELECT/dbsearch/dbsearch.html https://catalog.data.gov/dataset/fish-stocking (Limited to North Dakota)
http://nfdp.ccfm.org/dynamic_report/dynamic_report_ui_e.php (Can also be used under climate action)