Mumbai experienced a cool morning on January 12, 2026, with clear skies and mild temperatures. However, a layer of smog developed, reducing visibility and raising concerns about air quality. The city's Air Quality Index (AQI) was recorded at 164, categorized as 'poor,' with dust and fine particulate matter identified as primary contributors. Ongoing construction activities, including major infrastructure projects, are cited as significant factors worsening pollution levels, with Wadala and Chembur identified as particularly affected areas.