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If you woke up in <keyword id="19900881" type="General" weightage="20" keywordseo="delhi" source="keywords">Delhi</keyword> recently, you might have noticed more than just the nip in the air – a thick, toxic smog has blanketed the city, turning the air almost unbreathable. On Monday, Delhi’s <keyword id="19920379" type="General" weightage="20" keywordseo="air-quality-index" source="keywords">Air Quality Index</keyword> (<keyword id="19916482" type="General" weightage="20" keywordseo="aqi" source="keywords">AQI</keyword>) hit 481, placing it in the "severe plus" category. For context, the “severe” category begins at an AQI of 401, and anything above 450 poses serious health risks even for healthy individuals.<br /><br />According to Swiss group IQAir’s live rankings, Delhi is currently the most polluted city in the world, with an air quality score of 1,081 – a “hazardous” level that is 130.9 times the World Health Organization’s recommended limit for PM2.5.<br /><h3 style="line-height:1.38;margin-top:14pt;margin-bottom:4pt;">Major contributors to Delhi’s smog</h3>The root causes of Delhi’s pollution are manifold:<br /><br /><ul><li>Stubble Burning: On Saturday, crop residue burning contributed 25% of Delhi’s air pollution. By Sunday, this figure had climbed to 40%, according to SAFAR (System of Air Quality and Weather Forecasting and Research). Satellites recorded 1,334 stubble-burning incidents in six northern states on Sunday alone, the highest number in four days.</li><li>Vehicles: On Sunday, vehicular emissions accounted for 15.8% of the city’s pollution, according to the Centre’s Decision Support System for Air Quality Management.</li><li>Construction Dust and Industrial Emissions: PM2.5, a deadly pollutant, remains the most prominent factor, capable of penetrating deep into the lungs and leading to severe respiratory and cardiac diseases.</li></ul><h3 style="line-height:1.38;margin-top:14pt;margin-bottom:4pt;"><keyword id="24020184" type="General" weightage="20" keywordseo="GRAP-Stage-4" source="keywords">GRAP Stage 4</keyword></h3>To combat the rising pollution levels, authorities have enforced Stage 4 of the Graded Response Action Plan (GRAP). Here’s a breakdown of the restrictions:<br /><ul><li>Vehicle Restrictions:</li><ul><li>Diesel medium and heavy goods vehicles (BS-IV and below) registered in Delhi are banned unless carrying essential goods.</li><li>Non-essential light commercial vehicles from outside Delhi can only enter if they use CNG, BS-VI diesel, or are electric.</li><li>Trucks carrying non-essential items are barred unless they use cleaner fuels like LNG, CNG, or BS-VI diesel.<br /></li></ul><li>Workplace and School Adjustments:</li><ul><li>Classes for students in grades 6 to 9 and class 11 have moved online.</li><li>Offices in the National Capital Region (NCR) are advised to work at 50% capacity, with the rest operating remotely.<br /></li></ul><li>Construction Ban:<br /></li><ul><li>Construction and demolition (C&amp;D) activities have been halted, including large projects like highways, flyovers, and pipelines.<br /></li></ul></ul>Out of Delhi’s 40 monitoring stations, 32 reported AQI levels above 400 on Monday. Visibility in parts of the city dropped to just 100 metres due to the thick smog.<br /><br />The health implications of these numbers are alarming. <keyword id="20118319" type="General" weightage="20" keywordseo="PM2-5-levels" source="keywords">PM2.5 levels</keyword> in Delhi were recorded at 130.9 times the safe limit set by the WHO. According to experts, long-term exposure to such air quality could lead to an 11% increase in premature mortality rates due to respiratory and cardiovascular diseases. Studies have shown that Delhi residents may lose an average of 10 years of life expectancy if pollution levels persist.<br /><br />Despite the restrictions, life in Delhi continues under a cloud of smog. Iconic landmarks like India Gate have become barely visible through the haze. While flights and trains are operational, some delays have been reported.<br />

GRAP Stage 4 restrictions take effect as air quality in Delhi deteriorates; PM2.5 levels 130 times higher than WHO limits

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GRAP Stage 4 restrictions take effect as air quality in Delhi deteriorates; PM2.5 levels 130 times higher than WHO limits

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