Privacy Policy

Last updated: May 7, 2026

1. Who we are

OpenWindow.live is a free web tool that provides real-time ventilation recommendations based on outdoor weather and air quality at your location. The service is operated by Max Maggio (info@openwindow.live).

2. Data we collect

We collect as little data as possible:

• Location coordinates — requested once via your browser's Geolocation API. Used only to fetch local weather data. Never transmitted to our servers beyond the API request. Stored in your browser's local storage until you clear it or change location.
• User preferences — indoor temperature, allergy sensitivity, temperature unit. Stored only in your browser's local storage. Never sent to our servers.
• Language preference — stored in your browser's local storage.

We do not collect names, email addresses, device identifiers, or browsing history. We do not use session tracking or user profiling.

3. How we use location data

Your browser coordinates (latitude and longitude) are sent to our Cloudflare Worker API endpoint solely to retrieve outdoor temperature, humidity, wind speed, and air quality index for your area. The coordinates are rounded to two decimal places (~1 km precision) before being used as a cache key. The response is cached for 5 minutes at the edge — no personal identifier is stored with the cache entry.

4. Third-party data providers

To provide the service, we query these external APIs with your rounded coordinates:

• OpenWeather (Privacy Policy) — weather data provider.
• AQICN / World Air Quality Index (Privacy Policy) — air quality data provider.

These requests are made server-side through our Cloudflare Worker, so your IP address is not directly exposed to these providers.

5. Advertising — Google AdSense

This site uses Google AdSense to display advertisements. Google AdSense may use cookies and web beacons to serve ads based on your prior visits to this website and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our site and other sites on the Internet.

You may opt out of personalized advertising by visiting Google Ads Settings or aboutads.info.

For more information on how Google uses data, see How Google uses data when you use our partners' sites or apps.

6. Cookies

OpenWindow.live itself does not set cookies. Your preferences are stored in browser local storage, not cookies. Google AdSense, however, may set cookies for ad personalization as described in section 5.

7. Infrastructure

The site is hosted on Cloudflare Pages and uses Cloudflare Workers as an API proxy. Cloudflare may log request metadata (IP address, timestamp, URL) for security and performance purposes, subject to Cloudflare's Privacy Policy.

8. Your rights (GDPR)

If you are located in the European Economic Area, you have the following rights regarding your data:

• Access and deletion — All data stored locally (location, preferences, language) can be cleared at any time by clearing your browser's local storage or site data.
• Data portability — Your local storage data can be inspected via your browser's developer tools.
• Object to processing — You can deny location access in your browser and manually enter a city instead.

Since we do not store personal data on our servers, there is no server-side data to request or delete. For questions about data processed by Google (AdSense), contact Google directly.

9. Children's privacy

OpenWindow.live is not directed at children under 13. We do not knowingly collect data from children.

10. Changes to this policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page will reflect any changes. Continued use of the service constitutes acceptance of the updated policy.

11. Contact

For privacy questions or requests: info@openwindow.live