新加坡环境局周五晚发烟霾提示：东南风可能把苏门答腊烟霾吹向新加坡
新加坡——新加坡国家环境局（NEA）10月2日星期五晚间发布烟霾提示：在盛行的东南风或南风作用下，来自苏门答腊南部的烟霾可能继续飘向新加坡。环境局在提示中说，已观测到中到浓密的烟羽从苏门答腊南部向新加坡方向漂移，加里曼丹的火灾也产生了烟霾。
当天的空气数据仍属温和：10月2日新加坡24小时污染指数（PSI）在63至79之间，属“适中”范围；1小时PM2.5读数在36至70微克/立方米之间。但环境局提醒，新加坡及周边地区周六将维持干燥天气，24小时PSI预计处于适中到低度不健康范围——也就是说，周末空气可能转坏。
这股烟霾源于印尼苏门答腊和加里曼丹持续的森林与土地火灾。印尼正经历11年来最严重的火灾季，强厄尔尼诺带来的干旱使火情难以控制。烟霾是否吹到新加坡，取决于风向的细微变化：东南风向意味着苏门答腊南部的烟羽正对着海峡对岸的城市国家。
接下来这个周末，新加坡将迎来会议与赛事密集的一周，环境局的每日烟霾更新（可通过haze.gov.sg、NEA网站和myENV应用查看）成为本地居民和访客安排户外活动的主要依据。截至周五晚间，新加坡的空气尚未进入不健康区间，但官方提示已经先行发出。
来源：据新加坡国家环境局10月2日晚间烟霾提示（经Business Today 10月3日报道引述）及气象署烟霾更新资料整理。
NEA's Friday-Evening Advisory: Southeasterly Winds May Carry Sumatran Haze Towards Singapore
SINGAPORE — Singapore's National Environment Agency (NEA) said in an advisory on Friday evening, October 2, that smoke haze could continue to be transported towards Singapore under prevailing southeasterly or southerly winds. Moderate to dense smoke plumes from southern Sumatra had been observed drifting towards Singapore, the agency said, while smoke haze was also observed from fires in Kalimantan.
The day's air readings were still moderate: Singapore's 24-hour Pollutant Standards Index (PSI) on October 2 ranged between 63 and 79, in the 'Moderate' band, with 1-hour PM2.5 readings between 36 and 70 micrograms per cubic metre. But the NEA cautioned that dry conditions were expected to persist over Singapore and the surrounding region on Saturday, with the 24-hour PSI forecast in the moderate to low-unhealthy range — meaning the air could worsen over the weekend.
The haze originates from continuing forest and land fires in Indonesia's Sumatra and Kalimantan. Indonesia is enduring its worst fire season in 11 years, with El Niño-driven drought making the blazes hard to control. Whether the smoke reaches Singapore turns on small shifts in wind direction: southeasterlies point the plumes from southern Sumatra straight across the strait at the city-state.
Ahead of a busy week of conferences and events, the NEA's daily haze updates — carried on haze.gov.sg, the NEA website and the myENV app — are the main reference for residents and visitors planning outdoor activity. As of Friday evening, Singapore's air had not yet entered the unhealthy range, but the official warning had already been issued.
Sources: Compiled from the NEA's October 2 evening haze advisory (as reported by Business Today on October 3) and Meteorological Service Singapore haze updates.
图片来源：烟霾笼罩的新加坡天际线（资料图），SpLoT 摄，CC BY 2.5（Wikimedia Commons）
