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Please note that the Air Pollutant Index reported by the DoE is calculated based on the 24 hours running average of the most dominant pollutants (including PM2.5, PM10 and Ozone). This can make it really difficult to find out what the actual air quality is in real time. The best practice is to report real-time air quality using hourly data, which is what most EPA worldwide do.
For instance, during a period of Haze, where the Air Quality Index can deteriorate significantly and fast, the published Air Pollution index is most likely lower than the actual pollution. Similarly, when the air polution decreases, the Air Quality Index can still be very high although the pollution is gone.Read more here.Air Quality Data source
气象数据
Besut, Terengganu目前的天气状况在測量(星期五)10:00
23°C
湿度: 99%
空气压力:: 1009毫巴最近的城市
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关于空气质量与空气污染指数
本网站采用的污染指数和颜色与EPA是完全相同的。 EPA的指数可以从 AirNow上查到
空气质量指数 | 空气质量指数级别(状况)及表示颜色 | 对健康影响情况 | 建议采取的措施 |
0 - 50 | 一级(优) | 空气质量令人满意,基本无空气污染 | 各类人群可正常活动 |
51 -100 | 二级(良) | 空气质量可接受,但某些污染物可能对极少数异常敏感人群健康有较弱影响 | 极少数异常敏感人群应减少户外活动 |
101-150 | 三级(轻度污染) | 易感人群症状有轻度加剧,健康人群出现刺激症状 | 儿童、老年人及心脏病、呼吸系统疾病患者应减少长时间、高强度的户外锻炼 |
151-200 | 四级(中度污染) | 进一步加剧易感人群症状,可能对健康人群心脏、呼吸系统有影响 | 儿童、老年人及心脏病、呼吸系统疾病患者避免长时间、高强度的户外锻炼,一般人群适量减少户外运动 |
201-300 | 五级(重度污染) | 心脏病和肺病患者症状显著加剧,运动耐受力降低,健康人群普遍出现症状 | 儿童、老年人及心脏病、肺病患者应停留在室内,停止户外运动,一般人群减少户外运动 |
300+ | 六级(严重污染) | 健康人群运动耐受力降低,有明显强烈症状,提前出现某些疾病 | 儿童、老年人和病人应停留在室内,避免体力消耗,一般人群避免户外活动 |
(参考详见
http://zh.wikipedia.org/wiki/空气质量指数)
This page has been generated on Friday, Nov 22nd 2024, 11:10 am CST-