With heat stroke, “age, severity of illness and the underlying health of a person are all factors that impact the recovery process,” Dr. Bangash said. “But usually, at a minimum, in younger adults and those with milder illness, it could take up to a week or more to see some recovery from a heat stroke.” Use the CDC heat tracker as a guide“One of the things that we commonly misunderstand is that it’s not always the higher temperature. There’s also the heat and the humidity combined,” Dr. Bangash said. “The CDC’s heat tracker does a very good job in tracking the heat index.The CDC’s Heat and Health Tracker calculates where people are most likely to feel the effects of heat on their health by incorporating weather data with historical temperature, heat-related illness, and community characteristics.“That’s very valuable information because depending on what the heat index is or what the heat tracker tells you, you have to be very careful about how much exposure you have to the external climate,” he added.