Live data from Hacker News

Show HN: SF Microclimates

github.com

11–20 of 38 posts

Re: Show HN: SF Microclimates

#12
post #6

My favorite weather map for SF is PurpleAir: https://map.purpleair.com/environment-estimated-temerature-f... There are thousands of sensors around the city. You can get a sense of shade-vs-sun temperatures by the spread of numbers you see (on cloudy days, the reported temperatures will be much closer together, while on sunny days, sensors in the sun will report elevated temperatures.) You do need to make sure to disa…

This one is neat, I might actually use it. I don't understand why it includes indoor sensors at all let alone by default. Why would I want to know the temperature inside some random building?

> I don't understand why it includes indoor sensors at all let alone by default.

Add location_type=0 to only get outdoor sensors

Re: Show HN: SF Microclimates

#15

My favorite weather map for SF is PurpleAir: https://map.purpleair.com/environment-estimated-temerature-f... There are thousands of sensors around the city. You can get a sense of shade-vs-sun temperatures by the spread of numbers you see (on cloudy days, the reported temperatures will be much closer together, while on sunny days, sensors in the sun will report elevated temperatures.) You do need to make sure to disa…

I use that and Mr. Chilly.

Mr. Chilly is one of those niche apps that sparks joy and reminds me of the early app days.

Re: Show HN: SF Microclimates

#16
post #12
post #6

Earlier quoted context omitted.

This one is neat, I might actually use it. I don't understand why it includes indoor sensors at all let alone by default. Why would I want to know the temperature inside some random building?

> I don't understand why it includes indoor sensors at all let alone by default. Add location_type=0 to only get outdoor sensors

or just click the buttons that accomplish the same thing. The point is someone at PurpleAir is asleep at the wheel if such an obvious default configuration isn't being set. If they can't get such a basic thing right, why do we trust anything else from them? "Anything else" specifically including "running their software on a raspberry pi inside my home network".

Re: Show HN: SF Microclimates

#17

My favorite weather map for SF is PurpleAir: https://map.purpleair.com/environment-estimated-temerature-f... There are thousands of sensors around the city. You can get a sense of shade-vs-sun temperatures by the spread of numbers you see (on cloudy days, the reported temperatures will be much closer together, while on sunny days, sensors in the sun will report elevated temperatures.) You do need to make sure to disa…

I use that and Mr. Chilly. Mr. Chilly is one of those niche apps that sparks joy and reminds me of the early app days.

This was directly inspired by Mr Chilly which was designed by my friend Anna Bleker.

It's an excellent iOS app: https://mr-chilly.com/

My goal was to do something similar as a Claude Code skill

Re: Show HN: SF Microclimates

#20
An interesting problem with self-reported temperature is that people just put their outdoor sensors inside for some reason or near an ambient heat source; also in neighborhoods with tall buildings, it's a bit colder higher up, so the balcony readers are a bit off from sidewalk temperature, it is interesting to see though that one block from another is super different in temp, is it because it's actually different or is there something heating/cooling the sensor off randomly
Post reply on HN