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本日(11/11)預計進行系統調整(12:30至13:30),空氣品質監測網可能暫時中斷服務,如需查詢空品資訊請至愛環境資訊網(網址:https://ienv.moenv.gov.tw/)或「環境即時通」APP查詢,本署完成調整及測試後,即恢復資料服務,特此公告。

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Air Quality Standards

The standards were promulgated by the Environmental Protection Administration, Executive Yuan through order no.1091159220 on Sep. 18, 2020.

Article 1

The standards were stipulated based on item 3 of Article 5, Air Pollution Control Act.

Article 2

The air quality standard of each air pollutant is stipulated as the following:

Article 3

Pollutants Standard Unit
PM10 Daily average or 24 hours value 100 μg/m3
Yearly average 50
PM2.5 24 hours value 35 μg/m3
Yearly average 15
SO2 Hourly average 0.075 ppm
Yearly average 0.02
NO2 Hourly average 0.1 ppm
Yearly average 0.03
CO Hourly average 35 ppm
8-hour moving average 9
O3 Hourly average 0.12 ppm
8-hour moving average 0.06
Pb 3-month average 0.15 μg/m3

Article 4

If the concentration of fine particulate matter in air pollution control zones and total quantity control zones is in conformity with the following regulations, it is considered that the air quality is abide by the standard:
  • With general monitoring stations: List in order from lowest to highest the valid 24-hour value for each year within said zones. Take the value corresponding to the 98th accumulative percentage, and calculate the average value for three consecutive years. Average this value with the average values of other stations, and the resulted value should be less than the 24-hour value of fine particulate matter in the air quality standards.
  • With general monitoring stations: Get the average of the average values of three consecutive years of one station, and then average it again with the average values of all stations in the zone. The resulted value should be less than the annual average value of fine particulate matter in the air quality standards.
  • The aforementioned general monitoring stations are those that were installed or recognized by the central competent authority. Data from a monitoring station will not be included in the calculation if the monitoring station's valid values account less than 75% of all values it monitors in a year.

    The determination of whether items other than fine particulate matter are in conformity with air quality standards is stipulated by the central competent authority elsewhere.

Article 5

The standard method of monitoring the concentration of fine particulate matter (PM2.5) is the manual monitoring method of fine particulate matter (PM2.5) stipulated by the central competent authority.

    The aforementioned monitoring value can be replaced by automatic monitoring data after the data is calculated and converted to a value corresponding to the manual monitoring value.

    The determination of whether items other than fine particulate matter are in conformity with air quality standards is stipulated by the central competent authority elsewhere.

Article 6

The standards take effect on the date of promulgation.