A report by the BMC reveals that the annual average levels of PM10 at Andheri and Wadala traffic junctions were significantly higher than the national standard. The levels of PM2.5 were barely within the acceptable range. The readings in some months exceeded the standards by more than double. These pollutants have been linked to lung cancer and respiratory and cardiovascular diseases. The report also highlights the increasing number of vehicles in Mumbai, which contributes to the pollution levels. The levels of carbon monoxide, nitrogen dioxide, sulphur dioxide, and ammonia were also measured.