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How does rain affect indoor air quality?

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Rain can affect indoor air quality in a few ways. When it rains, the humidity level in the air tends to increase, which can lead to mold growth indoors. Additionally, rain can also bring in outdoor pollutants and allergens into the indoor environment, impacting the air quality inside your home or building. It's important to ensure good ventilation and proper maintenance of your indoor spaces to minimize the impact of rain on indoor air quality.
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Rain can indirectly affect indoor air quality by increasing humidity levels. When it rains, the outdoor air becomes more humid, which can lead to moisture seeping into buildings through leaks or poor ventilation. This increased moisture can create a breeding ground for mold, mildew, and dust mites, which can negatively impact indoor air quality and potentially trigger allergies or respiratory issues. It's important to ensure proper ventilation and address any leaks or moisture issues to maintain good indoor air quality, especially during rainy periods.