Air Pollution in Lucknow: Real-time Air Quality Index and smog alert. How polluted is the air today in Lucknow? What is the air quality now in Lucknow? Lucknow,PM2.5,AQI,Air Quality Index,Pollution Index,Pollution,historical data,PM10,respirable particulate matter,NO2,nitrogen dioxide,SO2,sulfur dioxide,CO,carbon monoxide,O3,ozone,smog,forecast Pollution in Lucknow Pollution in Lucknow Air Pollution in Lucknow: Real-time Air Quality Index and smog alert.