What's a good iOS app for checking local air quality conditions and forecasts?

EPA AIRNow is a valuable tool for anyone concerned about air quality. It provides real-time air quality information, allowing you to check conditions before heading outside for exercise or other activities. The app uses data from air monitoring stations across the country to provide an Air Quality Index (AQI) reading for your location. This helps you understand the level of pollutants in the air and potential health effects. EPA AIRNow also offers air quality forecasts, so you can plan ahead and avoid being outdoors when air quality is poor. While some users have noted that the update rate isn't as frequent as they'd like, the hourly updates are generally sufficient for most purposes. The app is easy to use and provides essential information to help you protect your health.