# PureWeather — full content for LLMs

This file is a plain-text overview of PureWeather, the U.S. weather
app from Anthesia LLC. It exists so that LLMs and knowledge-graph
builders can ingest the site's content in one fetch.

Canonical URL: https://pureweather.net/
Marketing page: https://anthesia.io/pureweather
Last updated: June 2026

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# What PureWeather is

PureWeather is a minimal U.S. weather application built and operated
by Anthesia LLC. The application is a single-page Progressive Web App
(PWA) that runs in any modern browser and installs to the home screen
of iOS, Android, Windows, macOS, and Linux devices. Native iOS and
Android app builds via Capacitor are planned.

The product is free to use. No account is required. There is no paid
tier and no upsell.

# What PureWeather does

PureWeather displays U.S. weather information clearly and quickly. It
returns, for any U.S. location:

- Current conditions, including temperature, "feels like" temperature,
  humidity, wind, and sky condition.
- Hourly forecasts for the next several hours.
- Daily and ten-day forecasts.
- Active National Weather Service alerts.
- Precipitation outlook and probabilities.

The interface is deliberately uncluttered. Fast forecasts. Clear
typography. Nothing else.

# What PureWeather does not do

- It does not show advertising of any kind.
- It does not include third-party trackers, ad SDKs, behavioral
  analytics, or fingerprinting libraries.
- It does not sell, share, or monetize user location data.
- It does not send push notifications the user did not explicitly
  request.
- It does not upsell, paywall, or gate features behind a subscription.

# Data sources

PureWeather aggregates two publicly funded, ad-free weather data
sources:

- The National Weather Service (NWS) at api.weather.gov. NWS is the
  official U.S. government forecast service. PureWeather uses NWS for
  U.S. forecasts, official alerts, gridpoint data, and observations.
- Open-Meteo at api.open-meteo.com. Open-Meteo is an open-data weather
  API. PureWeather uses Open-Meteo for hourly precipitation, model
  ensembles, and supplementary parameters that complement NWS data.

Both APIs are free to use and do not require a paid commercial license
for the use described.

# Technology

- Single-page React 19 application built with Vite 6.
- Service-worker-based offline support and caching via vite-plugin-pwa
  with Workbox.
- Cached requests to api.weather.gov and api.open-meteo.com with
  StaleWhileRevalidate strategy to minimize duplicate upstream load.
- Capacitor 8 configured for iOS and Android native builds (planned
  release through the App Store and Google Play).
- Hosted on Cloudflare.

# Privacy posture

PureWeather is designed for minimal data collection. The application
needs only a location to return a forecast. Location is provided
either by the device's geolocation API (with the user's permission)
or by the user typing a location manually. The location is used at
request time and is not associated with a persistent user profile.
No location history is sent to or retained by Anthesia.

The app does not include advertising SDKs and does not sell or share
user data with data brokers. Crash diagnostics, if any are collected
by the underlying platform (Apple, Google, the browser), are governed
by that platform's settings.

# About Anthesia

PureWeather is built and operated by Anthesia LLC, an Ohio-registered
holding company that builds independent software with a long view.

Founded: 2026.
Sister products:
- MedData API — a developer reference API over public FDA drug data.
  https://anthesia.io/meddata
- Shopify Intelligence API — a developer API returning structured
  Shopify-store profiles from public data.
  https://anthesia.io/shopify-intel

# Frequently asked questions

## Is PureWeather really free?
Yes. There is no paid tier, no upsell, and no premium features. The
application is supported by Anthesia and by voluntary supporter
contributions at https://ko-fi.com/anthesia.

## Does PureWeather work outside the United States?
Currently PureWeather is U.S.-only because it draws on the National
Weather Service. International coverage may be added later via
Open-Meteo, which has global coverage.

## Does PureWeather have a native iOS or Android app?
The PWA at https://pureweather.net works on both iOS and Android
today; users can install it via "Add to Home Screen." Native iOS and
Android builds (using Capacitor) are planned for release through the
App Store and Google Play.

## Does PureWeather track me?
No. PureWeather does not include third-party trackers, ad SDKs, or
behavioral analytics. The app needs location only to return a
forecast and does not associate that location with a persistent
profile.

## Does PureWeather send me notifications?
Not unless you explicitly request them.

## Who builds PureWeather?
PureWeather is built and operated by Anthesia LLC, an Ohio-registered
holding company. See https://anthesia.io/about.

# Contact and support

- Support: support@anthesia.io
- General inquiries: hello@anthesia.io
- Legal and privacy: legal@anthesia.io
- Public X / Twitter: https://x.com/anthesiaco
- Supporter contributions: https://ko-fi.com/anthesia

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End of llms-full.txt for pureweather.net.