Beijing PM2.5 AQI

Very Unhealthy

254
Updated within 1hours

Chengdu PM2.5 AQI

Unhealthy for Sensitive Groups

139
Updated within 1hours

Canton PM2.5 AQI

Good

41
Updated within 1hours

Shanghai PM2.5 AQI

Moderate

69
Updated within 1hours

Dallas-Fort Worth-Arlington, TX PM2.5 AQI

Moderate

65
Updated within 2019-06-23 17:00:00

Houston-Sugar Land-Baytown, TX PM2.5 AQI

Moderate

55
Updated within 2019-06-22 11:00:00

New York-Northern New Jersey-Long Island, NY-NJ-PA PM2.5 AQI

Moderate

62
Updated within 2019-08-08 08:00:00

Phoenix-Mesa-Scottsdale, AZ PM2.5 AQI

Moderate

64
Updated within 2019-07-31 17:00:00
Hazardous 350
Hazardous 328
Siping Hazardous 311
Tieling City Hazardous 305
Hohhot Very Unhealthy 296
Tangshan Very Unhealthy 294
Very Unhealthy 293
Jiaozhou Very Unhealthy 291
Liaoyang Very Unhealthy 287
Very Unhealthy 273
Fairfield County Good 1  
Butler County Good 3  
Lewiston-Auburn, ME Good 4  
Skagit County Good 4  
Homosassa Springs, FL Good 5  
Pima County Good 5  
Miami-Dade County Good 6  
Lake Havasu City-Kingman, AZ Good 7  
Longview, TX Good 8  
Moscow, ID Good 8  

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.

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