Mumbai experienced cool weather with minimum temperatures around 17-20 C and maximums near 31-33 C. However, air quality deteriorated significantly, with the overall AQI rising to unhealthy levels, reaching 136 on Saturday and 197 by Sunday morning. Chembur was particularly affected, with AQI readings in the poor to severe categories (253 and 326). This pollution is attributed to ongoing infrastructure projects and dry winter conditions that trap dust. Health advisories recommend limiting outdoor activities.