"Mumbaikars woke up on Wednesday to a thick layer of dust that had enveloped the city reducing visibility levels to six times lower than normal and increasing pollution levels by nearly 500%. But the dusty haze, as the MET has called this phenomenon-it [sic] was more pronounced in north India-is [sic] not benign, and doctors spent the better part of the day fielding calls from citizens who complained of breathlessness." (Quoted from article)