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Comment by andy_ppp | Hacker News Reader

And it's only going to get hotter. I wanted to build a visualisation to see how hot my current day was compared to other previous days at this time of year. Would be great to be able to look and see on Monday May 16th your nearest weather station has never been as hot as it is today before 1934. Other interesting statements about local temperature trends can be seen too.

My only problem is I can't find the data for local weather temperatures!

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It's not even Delhi record

Previous high in Delhi was recorded at 48.4°C at the Palam station on May 26, 1998 (11 days later).

Palam station highest temperature in last 24 hours = 46.4C

https://city.imd.gov.in/citywx/city_weather.php?id=42181

this 49C is questionable record with never used automated stations with no previous data

Actually, the record is correct but not for the city's main weather station. The temperature of 49C was recorded in two of the city's outer areas one of which was Najafgarh and other was Mungeshpur.

You can select those from the left nav on IMD's website and see the results yourself.

https://city.imd.gov.in/citywx/localwx.php

Where can I see data from these stations from hot years 2019 and 2020 to compare?

Apparently, IMD has released historical weather data last year and it is available here: https://www.imdpune.gov.in/Clim_Pred_LRF_New/Grided_Data_Dow...

However, it is in some weird binary format which I have no clue about. They have also shared some C and Fortran (yes Fortran) code to read the files.

I run weather data API (oikolab.com) focusing on historical data. Take a look at weatherdownloader.oikolab.com or climate-explorer.oikolab.com for examples and feel free to reach out if you'd like to try playing with the data for visualization. The data is from ECMWF and goes back to 1950 (I process them to make it faster to access as time-series).

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