Keep this in mind this week as heat indices reach 105+ degrees:
High humidity can make it feel hotter than the actual temperature. This is because our bodies rely on sweat evaporation to cool down, and high humidity hinders this process. When the air is already saturated with moisture, sweat doesn't evaporate as easily, causing us to feel hotter and stickier.
High humidity can negatively affect breathing and other body systems. It makes the air feel heavy and dense, increasing the effort required for breathing. This can exacerbate respiratory conditions like asthma and COPD, and also lead to increased mucus production and potential for infections. Additionally, high humidity can impact the cardiovascular system by making it harder for the body to cool down, potentially leading to heat exhaustion or heat stroke.
On high humidity days, it's wise to avoid strenuous physical activity, especially during the hottest hours of the day, and to stay hydrated by drinking plenty of fluids. You should also limit time outdoors, especially in areas with high pollen or mold, and avoid wearing tight-fitting clothing. Additionally, consider reducing your intake of foods that can exacerbate discomfort, like fried foods, dairy, and sugary snacks.