Dear Thej, FYI, the site you are accessing is for Air Quality Index and not Air Quality.
As a researcher, I am interested in Air Quality Data Main site is this https://app.cpcbccr.com/ccr/#/caaqm-dashboard-all/caaqm-landing Use the advance search option and download the data -- cumbersome process; there are limitations on number of days you can request, depending on the time step you choose. Best is 15 mins and you take care of the weeding out; otherwise asking for day average, the program will give you a value averaging everything it has, which includes -999 and some random numbers. Alternative is openaq.org We keep getting blocked by once in a while from fetching and archiving. Only last 90 days is online and here is a post to access it https://observablehq.com/@olafveerman/emissions-in-wuhan Rest is all stored on aws s3 buckets https://openaq-fetches.s3.amazonaws.com/index.html (click on real time) There are patches of days missing when the server is blocked by cpcb from fetching and there is not backlog correction method in place. AQI is useful for PR purposes, but beyond that not so much. Since, this is a calculated value based on 24-hr averages for PM2.5 (for example), it missed the raw instantaneous story. With best wishes, Sarath -- *Dr. Sarath Guttikunda* *http://www.urbanemissions.info <http://www.urbanemissions.info>* *http://www.indiaairquality.info <http://www.indiaairquality.info>* On Fri, Feb 14, 2020 at 5:11 PM Thejesh GN <[email protected]> wrote: > I wanted to write this how-to for a long time. But today I did :) > > How to : > https://thejeshgn.com/2020/02/14/scraping-national-air-quality-data/ > Github code: https://github.com/thejeshgn/cpcbcc > > > Thej > -- > Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್ > http://thejeshgn.com > GPG ID : 0xBFFC8DD3C06DD6B0 > > -- > Datameet is a community of Data Science enthusiasts in India. Know more > about us by visiting http://datameet.org > --- > You received this message because you are subscribed to the Google Groups > "datameet" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/datameet/CAABnYsX%3DzYCL-9g26AS69HbNz1qD5Aj%2Be%3D0YsCPRt7sdup1AbQ%40mail.gmail.com > <https://groups.google.com/d/msgid/datameet/CAABnYsX%3DzYCL-9g26AS69HbNz1qD5Aj%2Be%3D0YsCPRt7sdup1AbQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- Datameet is a community of Data Science enthusiasts in India. Know more about us by visiting http://datameet.org --- You received this message because you are subscribed to the Google Groups "datameet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/datameet/CAAj%2BwWoRqXzcvH1FGEAQ9zCdCPOd6T1Dvd2KMeY_WkUnWv-fbA%40mail.gmail.com.
