RSQA: Montreal Daily Air Quality Index Values

RSQA provides hourly-updated daily Air Quality Index (AQI) values for Montreal. The data is published by the Government and Municipalities of Québec and updated approximately 50 minutes after each hour. Historical data, station lists, and geographic sectors are available via linked resources.

Use Cases

• Monitor real-time urban air pollution levels based on hourly AQI updates
• Analyze daily air quality trends in Montreal based on the numerical AQI values
• Correlate air quality with geographic sectors based on the linked station and sector data

Strengths

• Data is updated hourly, providing near-real-time monitoring
• Published under a CC-BY-4.0 license, allowing for open reuse
• Linked resources provide historical data, station lists, and geographic sectors

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• The AQI systems use Eastern Standard Time (EST) year-round, which may cause confusion during Daylight Time

Provenance

Source

Government and Municipalities of Québec

Collection Method

Measured by the City of Montreal

Freshness

Updated hourly

Geography

Montreal