No Rain Relief: Delhi’s ‘Severe’ Air Quality Remains Unchanged

Delhi’s air quality remained in the ‘severe’ category at an AQI of 405 despite light rain.

New Delhi: The national capital’s air quality crisis persisted on Monday, with the Air Quality Index (AQI) remaining firmly in the ‘severe’ category at 405, despite a spell of light rain. According to the Central Pollution Control Board (CPCB), the 24-hour average AQI stood at a hazardous 406 on Monday, indicating no respite from the suffocating air pollution.

Experts explained that the drizzle, coupled with low wind speeds, failed to alleviate the pollution, instead causing microscopic particles like PM 2.5 to linger in the air. These particles are particularly harmful, as they can penetrate deep into the respiratory system, posing severe health risks.

Persistent Pollution Despite Drizzle

Manu Singh, an environmental expert, noted, “The winter situation in Delhi NCR is becoming grimmer year by year. Pollutants such as PM 2.5 and PM 10, which are ultra-fine and hazardous, remain suspended in the air due to stagnant weather conditions. The light rainfall witnessed today wasn’t substantial enough to disperse the pollutants effectively.”

Singh further emphasized the health implications, calling the current scenario a “dangerous cocktail” of severe pollution and cold weather. He criticized the lack of effective implementation of pollution control measures like the Graded Response Action Plan (GRAP) and stressed that Delhi’s residents are living in what can only be described as a “gas chamber.”

Role of Weather in Pollution Woes

The India Meteorological Department (IMD) reported that Delhi’s maximum temperature on Monday settled at 18.4°C, 2.3 degrees below the seasonal average, while the minimum temperature dipped to 8.6°C. A layer of fog, along with high humidity levels ranging from 79% to 95%, worsened the situation.

SN Mishra, a climate expert, highlighted the complex interplay of weather, policy, and pollution in Delhi. “The first half of December saw favorable winds that swept away pollutants, leading to better air quality. However, post-16th December, weak and variable winds allowed pollutants from vehicles, industries, and construction to accumulate, plunging the city into hazardous conditions,” Mishra explained.

He remarked on the cyclical nature of Delhi’s pollution problem, stating, “Delhi’s air quality remains at the mercy of weather gods. Without significant policy changes and stricter implementation of emission controls, this grim scenario will persist.”

GRAP Measures Fall Short

The GRAP Stage IV measures, which include restrictions on construction, demolition, and industrial activities, have been in place in Delhi-NCR since December 16. However, experts and citizens alike have criticized the measures as insufficient to address the scale of the crisis. Singh pointed out that “policies need to focus not just on emergency measures but also on long-term strategies to curb emissions.”

The Supreme Court has also weighed in on the issue, urging authorities to take proactive measures rather than relying on favorable weather conditions to improve air quality.

Mumbai Takes Preventive Steps

While Delhi grapples with its pollution woes, Mumbai has also been facing declining air quality. On Monday, the city’s AQI stood at 135, categorized as “moderate,” but concerns about further deterioration have prompted the Brihanmumbai Municipal Corporation (BMC) to issue new guidelines.

The BMC has mandated regular sweeping and water sprinkling on roads to minimize dust, as well as stricter monitoring of construction debris transportation. Vehicles found violating these rules will be penalized.

The Road Ahead

The IMD has forecast cloudy skies and light rain for Delhi on Tuesday, with temperatures expected to hover around 19°C and 9°C. While this may bring slight relief, experts warn that fundamental policy changes and stricter enforcement are essential to combat the long-term effects of pollution.

Mishra concluded on a sobering note: “Delhi’s air remains a grim reminder of what unchecked emissions can do. While we hope for relief from weather changes, relying on them without addressing the root causes is not sustainable.”

As the capital city continues to battle its severe air quality crisis, it serves as a stark warning for other metropolitan regions to prioritize environmental health and implement preventive measures before the situation becomes irreversible.