RSQAQ - Continuous hourly data

Hourly contaminant concentrations measured continuously by the Quebec Air Quality Monitoring Network (RSQAQ). To consult the descriptive statistics of these data, look for the RSQAQ-Statistics-Descriptive-Data-Continuous-Data data.

If you have any questions about this data, contact the Info-Air department:.

These data exclude those [measured on Montreal Island] (https://www.donneesquebec.ca/recherche/dataset/vmtl-rsqa-polluants-gazeux).

For detailed instructions on how to open and navigate data files to easily find accurate data, see the [RSQAQ: Navigating Air Quality Data] tutorial (https://www.youtube.com/watch?v=3bLBUOmMEFk).

Data and Resources

Additional Info

Field Value
Last Updated April 17, 2026, 20:24 (UTC)
Created April 17, 2026, 20:24 (UTC)
contact_email infoair@environnement.gouv.qc.ca
contact_person {"en": "Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs", "fr": "Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs"}
criticality_level []
data_dictionary ["environment"]
geographic_scope []
open_canada_collection federated
open_canada_date_published 2022-09-07 00:00:00
open_canada_keywords {"en-t-fr": ["Ambient air", "Black carbon", "Nitrogen dioxide", "Sulfur dioxide", "Nitrogen monoxide", "Carbon monoxide", "Ozone", "Fine particles", "Ultrafine particles", "Air quality", "RSQAQ", "Hydrogen sulphide"], "fr": ["Air ambiant", "Carbone noir", "Dioxyde azote", "Dioxyde de soufre", "Monoxyde azote", "Monoxyde de carbone", "Ozone", "Particules fines", "Particules ultrafines", "Qualité air", "RSQAQ", "Sulfure hydrogène"]}
open_canada_subject ["nature_and_environment"]
sensitivity_level unrestricted
title_fr RSQAQ - Données horaires continues
update_frequency P1Y