RSQAQ - Continuous Data 4 min

4-minute concentrations of H2S and SO2 measured continuously by the Quebec Air Quality Monitoring Network (RSQAQ). If you have any questions about this data, contact the Info-Air service: infoair@environnement.gouv.qc.ca. These data exclude those measured on the island of Montreal. For detailed instructions on how to open and navigate data files to easily find accurate data, see the RSQAQ tutorial: Navigating Air Quality Data.

Data and Resources

Additional Info

Field Value
Last Updated April 17, 2026, 18:42 (UTC)
Created April 17, 2026, 18:42 (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", "health"]
geographic_scope []
open_canada_collection federated
open_canada_date_published 2025-06-16 00:00:00
open_canada_keywords {"en-t-fr": ["Ambient air", "Sulfur dioxide", "Air quality", "RSQAQ", "Hydrogen sulphide"], "fr": ["Air ambiant", "Dioxyde de soufre", "Qualité air", "RSQAQ", "Sulfure hydrogène"]}
open_canada_subject ["health_and_safety", "nature_and_environment"]
sensitivity_level unrestricted
title_fr RSQAQ - Données continues 4 min
update_frequency P1Y