Mumbai Faces Severe Air Pollution Spike

Summary Notes on Mumbai Air Quality (October 2025)

Pollution Levels and Monitoring Data:

• October 2025 reported as Mumbai's most polluted month with significant spikes in PM2.5 and PM10 levels.
• Critical Dates: October 18-22 saw the highest pollution coinciding with the festive season.
• 19 monitoring stations recorded highest daily PM2.5 levels; 7 stations peaked for PM10 since January.
• Compiled by Central Pollution Control Board (CPCB) and analyzed by the Centre for Research on Energy and Clean Air (CREA).

Health Impacts:

• PM2.5 levels observed peaked at:
  • Bandra Kurla Complex: 212 µg/m³
  • Malad West: 188 µg/m³
  • Navy Nagar, Colaba: 167 µg/m³
  • Mazgaon: 130 µg/m³
• PM10 levels peaked:
  • Malad West: 322 µg/m³
  • Deonar: 321 µg/m³
  • Mulund West: 234 µg/m³
• CPCB's permissible limits:
  • PM2.5 – 60 µg/m³
  • PM10 – 100 µg/m³
• Numerous stations exceeded permissible limits (e.g., 23 for PM2.5 and up to 28 for PM10 on October 20).

Yearly Trends:

• PM2.5 Data (Diwali periods):
  • 2022: 174.56 µg/m³
  • 2023: 144.04 µg/m³
  • 2024: 196.73 µg/m³
  • 2025: 187.78 µg/m³
• Notable upward trend in pollution levels during Diwali from 2022 to 2025.

Sources of Pollution:

• Major contributors include:
  • Increased vehicular movement
  • Construction activities
  • Use of firecrackers

Environmental and Health Concerns:

• PM2.5 can enter the bloodstream and affect organs, leading to cardiovascular issues, respiratory illnesses, and potentially increasing the risk of cancer.
• PM10 results from coarse dust from construction, getting trapped in lungs, provoking asthma and other respiratory problems.
• Heightened vulnerability for children, the elderly, and individuals with pre-existing health conditions.

Recommendations for Authorities:

• Urgent need to tackle not just seasonal spikes but also everyday pollution sources such as construction dust and vehicle emissions.
• Emphasis on public health protection and better pollution management strategies.

Pollution Monitoring Organizations:

• Mumbai uses Continuous Ambient Air Quality Monitoring Stations (CAAQMS) operated by:
  • Maharashtra Pollution Control Board (MPCB)
  • Indian Institute of Tropical Meteorology (IITM)
  • Brihanmumbai Municipal Corporation (BMC)

These notes capture the environmental concern regarding air quality in Mumbai, elucidating the health implications and trends in pollution levels, underscoring the importance of effective management and awareness initiatives to combat air quality deterioration.