Atmosphere is a tool for viewing and comparing city climate history. It reads roughly ten years of daily temperature, humidity, precipitation, wind, and PM2.5 data for yearly views, ten-year summaries, city comparisons, and travel-date statistics.
Open the hosted build at /apps/atmosphere/.
Current views
Inspect temperature, wet-bulb temperature, apparent temperature, humidity, precipitation, wind, PM2.5, season assignments, and livability levels.
Compare season lengths, livable days, and temperature statistics across roughly ten years.
Compare up to eight cities and adjust scoring for heat, cold, or general sensitivity.
Summarise matching historical dates for a selected range, with weights adjusted by year and ENSO status.
Data and limits
Historical weather, air quality, and city search come from Open-Meteo. The browser requests and caches historical weather in IndexedDB; the optional Express endpoint supplies only the current ENSO status.
- The app currently uses daily history rather than current conditions or forecasts.
- Missing PM2.5 remains unavailable, with the number of missing days shown. Weather analysis continues, and pollution statistics use valid samples only.
- City search returns up to five candidates. When there is more than one result, choose the intended region and country before climate data loads.
- The installed app still loads the page and third-party data over the network. IndexedDB only retains data that has already been fetched.