The Dylos Air Quality Sensor experiment



For more information about those real-time dylos and BAM monitor PM2.5 and PM10 readings, please refer to our article on the Dylos Air Particule Counter experimentation.

If you want to know about other affordarable Air Quality Sensors such as Shinyei and Samyoung, check our sensor overview page.

Real-time data

Current dylos readings are: Particules larger than 0.5 is -, larger than 2.5 is -, updated on - - (China time).

Those values are expressed in number of particules per 0.01 cubic foot (100.n/ft3), i.e. same as what is displayed on the Dylos LCD.

Time series graphs

The following two graphs show the last 30 days data correlation for the Beijng Sanlitun Dylos monitor (in blue) and Beijing Chaoyang Agricultural Exhibition Hall (朝阳农展馆) BAM monitor (in red).

Note that the comparison between Dylos and BAM readings is done for Dylos ≥ 0.5u with PM2.5 and Dylos ≥ 2.5u with PM10. You might think that comparing readings for Dylos ≥ 2.5u and PM2.5 might be more relevant, but this is actually not the case. The explanation is given in the experiment ' what is the dylos monitor actually measuring'.

Variation between stations

The next 2 graphics show the PM2.5 and PM10 raw values (in µg/m3) for different BAM stations (i.e. without the Dylos values) in Beijing, for the last 10 days. This is provided to ensure that there is not significant devitation between the various stations, especially considering that some are located on the road side, while others are in the living area.

CAC Chaoyang Agritculture Center (朝阳农展馆), BAM PM.25 in µg/m3
COSC Chaoyang Olympic Sports Center (朝阳奥体中心), BAM PM2.5 in µg/m3
DCDS Dongcheng Dongsi (东城东四), BAM PM2.5 in µg/m3
US Emb US Embassy (美国大使馆), BAM PM2.5 in µg/m3


For the list of all air quality sensors, check the Sensor Overview page

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本網站採用的污染指數和顏色與EPA是完全相同的。 EPA的指數可以從 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

如果你想了解更多有關空氣質量與污染,詳見維基百科或者 AirNow

有關健康建議詳​​見北京的Richard Saint Cyr MD醫生的博客

注意事項: 所有空氣品質數據在發佈時均未經驗證,且為了確保資料準確性,這些數據可能隨時被修改,恕不另行通知。 世界空氣品質指數專案在編制這些訊息內容時已經謹慎的運用了所有適當的技巧,在任何情況下世界空氣品質指數 在任何情況下,世界空氣品質指數專案團隊或其代理人均不對因提供此數據而直接或間接引起的任何損失、傷害或損害來承擔契約、侵權或其他責任。



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