The temperature displayed on a thermometer indicates the actual air temperature, while the heat index reflects how that temperature feels to the human body, taking into account humidity levels. As humidity increases, the heat index can be significantly higher than the air temperature, making it feel hotter and potentially leading to heat-related health risks. Conversely, in low humidity conditions, the heat index may be closer to the actual temperature. This relationship emphasizes the importance of considering both temperature and humidity for understanding comfort and safety in warm conditions.
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