Hour by hour
One day, every station
What the city's daily number was built from: each station's hourly PM2.5, with a "?" for every hour not measured. A day counts only with 16 or more hours.
Cells on the CPCB 24-hour PM2.5 band for readability; one hour's value is not a 24-hour AQI. Outlined cells are at the instrument limit. Hours are hour starts, IST. Source: CPCB via XKDR (CC BY 4.0) and OpenAQ.