Fig. 4: Example application of participant health real-time remote monitoring and personalized environmental exposure using HeatSuite.

Indoor temperatures (lines) measured in the main room (light red) and bedroom (blue) of a 1-bedroom apartment (8^th floor, malfunctioning air conditioner) during a 4-day extreme heat event (June 17–20^th) and the 3 proceeding days (June 21–23^rd), with 20-minute resolution presence detection of the 84-y old resident (solid circles, colour matched). Participant monitoring with HeatSuite revealed: i) ~48 h of exposure to indoor temperatures exceeding potentially hazardous threshold (>25.9 °C⁵⁷); and ii) hypertension on wake up (161/91 at 8:02 AM), prompting a researcher (KL) to contact the participant to assess wellbeing at ~10:00 AM on June 20^th, 2024.