Mumbai’s air contained lower levels of PM2.5 in January this year compared to the same period in 2025, 2024, and 2023, according to a study by Centre for Research on Energy and Clean Air (CREA).

This January, Mumbai’s monthly average of PM2.5 was 48 µg/m³, ranking 187th on the list of most polluted cities in terms of PM2.5 concentrations in its air, according to CREA, which studied 248 cities across the country for their PM2.5 concentrations.