2024-07-24 00:00:00 Reliable, trustworthy, real-time air quality data. ZephAir gives you reference-grade air quality information from more than 70 locations around the world. The data is collected by the U.S. Department of State and other government partners. ZephAir features non-U.S. locations and Washington, D.C. only. App features include: 1. Preferred Location(s). Select the location(s) that matter to you, so that the app opens right to the data you need most. 2. Push Notifications. Get the latest information with notifications for your preferred location(s).