Delhi Air Quality Drops Sharply as AQI Surges to 222

Following a brief period of improved air quality due to rainfall, Delhi has seen a significant deterioration in conditions. Within 24 hours, the city's Air Quality Index (AQI) rose from approximately 78 to 222, as reported by data from AQI.in on October 31.

Why Pollution Levels Rebounded

While rainfall earlier in the week provided temporary relief by washing away particulate matter and stronger winds helped disperse pollutants, these conditions were short-lived. Meteorological factors contributing to the recent spike include:

• Reduction in Wind Speed: The India Meteorological Department (IMD) noted that wind speeds dropped to approximately 6 kmph by Saturday morning, significantly reducing the dispersal of pollutants.
• Persistent Emission Sources: Ongoing contributors such as vehicle emissions, construction dust, and industrial activities continue to add pollutants to the atmosphere.

Future Weather Outlook

The India Meteorological Department forecasts dry conditions for the upcoming week. Key expectations include:

• Clear Skies: No rainfall is anticipated until at least November 6, removing a key natural mechanism for air cleaning.
• Temperature Shift: Maximum temperatures are projected to increase by 3–5°C over the next five days, following a period where temperatures were 10.3 degrees below normal.
• Wind Patterns: While northwesterly winds may reach 15–25 kmph during the afternoons, general wind speeds are expected to remain between 15 and 20 kmph, which may have a limited effect on overall air quality improvement.

Residents are advised to monitor official updates from the IMD and local pollution control authorities to stay informed about daily air quality shifts.