Manu 
AQI 438 at BTM, Bangalore. These numbers are unheard of, in Bangalore. This is really bad. #pollution
Nov 7, 2019 at 4:29amWeb
Show threadManu Nov 7, 2019
The subcontinent wind projection from https://www.airvisual.com/earth
#pollution
AirVisual Earth - 3D Real-time Air pollution map

AirVisual Earth covers pollution airflows across the world by combining PM2.5 data from public government air quality stations, satellite data and our community

Show threadManu Nov 7, 2019

Looks like the sensor at BTM is conked off, and this data may not be correct.

The readings from this sensor has swung wildly between 40-800 in a matter of 2 days.

So it might be safe to say that the reading of 438 might also be wrong, comparing the historical data of this station and nearby points.

Show threadPapa Shark Nov 7, 2019
@manu Scary! Horrible!