The air quality is bad today mainly due to a combination of factors including particulate matter (PM2.5) levels reaching moderate levels, limited pollutant dispersion due to light winds, and residual smoke from ongoing wildfires in the Western U.S. These factors lead to increased pollution and poor air quality, especially affecting sensitive individuals who may experience respiratory symptoms and should reduce prolonged outdoor exertion. Additionally, regional weather conditions such as warm temperatures and light winds contribute to less dispersion of pollutants, exacerbating the problem.
