Delhi’s Air Quality Plummets: AQI Soars to Hazardous 507 Post-Diwali

Delhi’s air quality has reached alarming levels, with the Air Quality Index (AQI) surpassing 500 on Sunday, Nov 3, 2024. This marks a significant deterioration in air quality, categorized as “hazardous,” which poses serious health risks to residents.

The AQI was recorded at 507 early in the morning, with PM2.5 levels exceeding the World Health Organization’s (WHO) recommended limit by over 65 times, reaching levels of 209.3 µg/m³ compared to the WHO’s safe limit of 15 µg/m³ for 24-hour average exposures.

The drastic increase in pollution levels is attributed to several factors, including the extensive use of firecrackers during Diwali celebrations, despite existing bans on their sale and use. Additionally, unfavourable weather conditions such as low wind speeds and high humidity have trapped pollutants close to the ground, exacerbating the situation.

Reports indicate that the AQI escalated from 327 to 507 within just 12 hours, highlighting the rapid decline in air quality.

Residents across various neighbourhoods in Delhi-NCR have been experiencing severe health impacts, with many reporting symptoms like coughing and difficulty breathing. Health experts have advised vulnerable groups—including children, the elderly, and those with pre-existing respiratory conditions—to remain indoors and limit outdoor activities.

Meanwhile, the Central Pollution Control Board (CPCB) has issued alerts recommending that residents wear N95 masks outside and avoid exposure during peak smog hours.

The current crisis underscores Delhi’s status as one of the most polluted cities globally, now ranked second according to IQAir data. The ongoing challenges reflect a need for more effective pollution control measures as the city grapples with worsening air quality post-Diwali.