PM2.513 µg/m3PM1026 µg/m3
SO27 µg/m3OZONE195 µg/m3
NO29 µg/m3CO0.4 µg/m3
CurrentLast 48 hoursMinMax
AQI monitoring stations Primary pollutantPM2.5 AQIPM10 AQINO2 AQI OZONE AQICO AQISO2 AQIAQI
Beidaihe EPA PM2.5 Air quality index ozone 58 18 7 88 3 7 88  
First off PM2.5 Air quality index ozone 33 29 13 74 7 11 74  
Stations PM2.5 Air quality index ozone 67 5 104 5 8 104
Construction Building PM2.5 Air quality index ozone 29 23 5 102 5 10 102

According The National Ambient Air Quality Standards for Particle Pollution to caculate AQI

Air Quality Index (AQI) Values Levels of Health Concern Colors
0 to 50 Good No health implications.
51 to 100 Moderate Few hypersensitive individuals should reduce outdoor exercise.
101 to 150 Unhealthy for Sensitive Groups Slight irritations may occur, individuals with breathing or heart problems should reduce outdoor exercise.
151 to 200 Unhealthy May have harmful impacts on patients and members of sensitive groups (children, aged or weak people), and also cause the general public unpleasant feelings.
201 to 300 Very Unhealthy Healthy people will be noticeably affected. People with breathing or heart problems will experience reduced endurance in activities. These individuals and elders should remain indoors and restrict activities.
301 to 500 Hazardous Healthy people will experience reduced endurance in activities. There may be strong irritations and symptoms and may trigger other illnesses. Elders and the sick should remain indoors and avoid exercise. Healthy individuals should avoid out door activities.
Qinhuangdao Air quality index Updated on 2020-05-31 16:00:00 , Qinhuangdao AQI (Air quality index) is 92. Qinhuangdao PM2.5 (fine particulate matter) AQI is 46 - Qinhuangdao PM10 (respirable particulate matter) AQI is 23 - Qinhuangdao NO2 (nitrogen dioxide) AQI is 7 - Qinhuangdao SO2 (sulfur dioxide) AQI is 9 - Qinhuangdao O3 (ozone) AQI is 92

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