The unseasonal wet spell, while giving the people of Delhi respite from heat, had another bonus — bringing down pollution levels in the city, ranked the world’s worst polluted by WHO. A comparative analysis of the real-time ambient air quality data of the Delhi Pollution Control Committee (DPCC) showed a significant drop in the level of pollution. Online data recorded a level even lower than 60 microgram/cubic meter (mcg/cu.m, which is the ambient air quality standard for PM2.5 set by the Central Pollution Control Board for dust, dirt, soot, smoke, and liquid droplets particles less than 10 micrometers in diameter (PM10), which pose a health concern because they can be inhaled and accumulate in the respiratory system). The WHO norm, however, is 25 mcg/cu.m. The busy neighbourhood of RK Puram in South Delhi, for instance, registered the highest level at 38 mcg/cu.m during the three days the data was recorded between March 29 and April 4. It was the week Delhi received untimely showers. This is in sharp contrast with the levels during March 22-28 that were over four times higher than even the standard, with highest touching 280 mcg/cu.m and the lowest settling at 80 mcg/cu.m.