air 168For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality. For each pollutant anThis Air China flht can also be referenced as CCA168, CA0168, CA 168, CCA 168. How often is flht CA168 delayed? On average, 10% of all CA168 flhts are delayed.