Heat Related Illness Reporting Data (English, CSV)

Heat Related Illness Reporting Data: English CSV file you can open as a table, filter, chart and export up to 10,000 rows. From City of Hamilton, updated Oct 2026.

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Publisher-reported update

2026-10-22

This data also includes four key heat risk indicators: identification of heat warning days, daily minimum and maximum temperatures, and whether the Humidex reached 40 °C or higher. The dataset contains historical records from 2023 to the present year, covering the heat season from May through September. This dataset is visualized on Hamilton Public Health’s Heat-Related Illness Dashboard. The Dashboard also includes daily counts of heat-related presentations to emergency department, made available to Hamilton Public Health through a data sharing agreement, which are not authorized for inclusion in this open dataset. Field Name Description Date Date of occurrence (M/DD/YYYY). All records represent information for a full day ending at midnight. Heat Paramedic Calls Number of heat-related illness paramedic calls that occurred in Hamilton. Sourced from Hamilton Paramedic Services, FirstWatch Heat Warning Day Flagged “Yes” if Hamilton’s Medical Officer of Health declared a heat warning for the City of Hamilton. A day is flagged if two or more consecutive days are forecasted with daytime highs greater than or equal to 31˚C and night-time lows greater than or equal to 20˚C or two or…

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