Delhi resumes some activities amid hazardous air and river foam: Indian capital

Amid signs of receding air pollution, India’s capital Delhi re-opened schools and some building sites on Monday. Despite remaining classified as hazardous, the air quality index (AQI) measured at 336, down from the previous level of 509, although it still falls under the “hazardous” category, according to a report by Swiss group IQAir.

This month, Delhi resumes its annual battle against pollution, despite government promises to improve. The hazardous air quality led to the closure of schools for nearly two weeks, but now children are returning to their classes wearing masks to protect themselves from the remaining pollution.

Hindu devotees continued to visit the Yamuna river, undeterred by the toxic foam that has been seen in the water. Authorities have described the foam as toxic and hazardous, potentially harmful to anyone coming into contact with it.

An environmental engineer explained that the foam comes from sludge and untreated waste, and that a food-grade chemical is being sprayed to control it. It is not lethal by nature, but will cause illness if consumed.

The condition of the water triggered emergency measures on Nov. 5, including a ban on building activity, but was later relaxed. Despite this, the air quality still remains a concern in light of the dangerous levels of particles suspended in the air.

Authorities forecast a fall in Delhi’s air pollution levels over the next two days as wind speeds are expected to pick up based on the government’s early warning system.

Winter in Delhi brings about a worsening of air pollution, trapping pollutants spewed by vehicles, industry, and agricultural activities. A real-time study conducted by experts shows that traffic emissions contribute significantly to dangerous particles suspended in the air.

The PM2.5 levels have been above the safe limit set by the World Health Organization, indicating the severity of air pollution in the National Capital Region.

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