83d3eaef__PM2_5_Air_Quality_Index__AQI___Health_Implications
[AQI] 151-200 [Air Pollution Level] Unhealthy [Health Implications] 
Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects
Yashio, Shinagawa, Tokyo, Japan Air Pollution: Real-time PM2.5 Air Quality Index (AQI)
Health Implications