德里排灯节前的空气恶化至七年来最脏水平，微小有害颗粒物浓度飙升。
Delhi’s air ahead of Diwali worsened to its dirtiest level in seven years as the concentration of tiny hazardous particles spiked.
气候智库能源与清洁空气研究中心的分析显示，周五早上6点，可深入肺部并进入血液的细颗粒物小时读数达到300。这一数值是世界卫生组织规定的24小时标准的20倍。
Hourly readings of fine particulate matter that can penetrate lungs and enter the bloodstream reached 300 at 6 a.m. Friday, according to an analysis by climate think tank Centre for Research on Energy and Clean Air. That’s 20 times higher than the 24-hour level prescribed by the World Health Organization.
CREA表示，小于2.5微米的颗粒物水平周四为233，此次飙升标志着自2019年以来排灯节前一周内毒性最强的空气。这个印度教节日今年落在11月8日，通常因人们普遍燃放鞭炮而加剧雾霾状况。
The spike in the level of particles smaller than 2.5 micrometers, which stood at 233 Thursday, marks the most toxic air in the week leading to Diwali since 2019, CREA said. The Hindu festival, which falls on Nov. 8 this year, typically amplifies hazy conditions because of widespread bursting of firecrackers.
德里的冬季雾霾是车辆、工业、扬尘、垃圾和农作物焚烧排放的混合物，在停滞的天气条件下积聚。随着气温下降和风力减弱，污染物被困在该地区上空，每年都引发公共卫生危机。
Delhi’s winter smog is a blend of emissions from vehicles, industry, dust, waste and crop burning that accumulate under stagnant weather conditions. That causes a public health crisis each year as falling temperatures and weaker winds trap pollutants over the region.
作为空气污染的主要指标，空气质量指数周四和周五在多个地点突破了400的“严重”水平。这已引起印度最高法院的关注，法院表示，仅仅对老旧车辆和建筑工实施限制是不够的。
The air quality index, the headline measure of air pollution, breached the “severe” level of 400 in several locations on Thursday and Friday. It has drawn scrutiny from India’s Supreme Court, which said that merely imposing restrictions on older vehicles and construction will not be enough.