The exclusion of extreme PM2.5 readings from official records could lead to an underestimation of the health risks posed by severe pollution episodes. High PM2.5 levels are linked to respiratory and cardiovascular issues, including asthma and heart attacks. Residents rely on accurate air quality data to make informed decisions about outdoor activities, and incomplete data may give a false sense of safety. Vulnerable populations, such as children, the elderly, and those with pre-existing health conditions, are particularly at risk during such pollution spikes.