OP i hate to break it to you. but a weather station wont tell you the right clothes to wear for the day. IT will tell you if it's raining outside currently. Consider this, station says it's raining and cold. You wear lots of clothes, umbrella etc. The rain storm is out of area by 9am and rest of day is hot and sunny.
I'm not familiar with the industry. Are other providers doing this?
(I assume that the question of whether these sensors are at all useful is another matter entirely.)
[1]: https://www.climacell.co/company/
[2]: https://www.climacell.co/blog/virtual-sensing/
[3]: https://www.fastcompany.com/90411326/how-cities-are-using-hy...
To answer your question, if you want to obtain raw sensor data our government (and some volunteers) maintains a network of thousands of weather stations. Many are automated, many are people doing manual obs. If you know how to write code you can programmatically obtain these data.
However you might be confused... climacell does forecasts and you asked about finding station data? They are completely different things. I have no insight into what climacell does but i am a knowledge person in industry. I can tell you that nobody has some groudnbreaking 'AI' machine learning algorithm that is amazingly great at forecasting weather. If such a thing did exist, that person would have zillions of dollars because they can accurately predict weather better then anyone else.
https://www.microsoft.com/en-us/research/publication/meeting...
Perhaps using 4G and GSM signal quality as an ad-hoc doppler or metric for precipitation. Is their landing page inaccurate? Are they no different from other companies (besides the good at sales and marketing bit)? They seem to have a lot of big names on their customer list.