Air quality can be important to health, especially when there are persistent sources of pollution, allergens, and local events such as wildfires. While you can easily take a walk outside to check the air, the Air Quality Index (AQI) delivers a numerical reading of air quality from 0 to 500. The higher the number, the more dangerous the air can be for your health.
iPhone apps such as Weather normally use local units to display temperature. While most of the world uses the Celsius scale, there are notable exceptions such as the United States. In these places, iOS uses the Fahrenheit scale automatically. For anyone more familiar with degrees centigrade, or interested in seeing temperatures in °C, switching units only takes a few taps.
Weather is an important detail when planning a vacation, especially in the summer months when most trips include outside activities. The stock iOS weather app is a great way to keep updated on the current and weekly forecast, but most iPhone owners have their settings enabled to show only the weather for their current location. You can easily add and remove additional cities and towns to your weather app to check multiple forecasts.
With summer just around the corner many people will be spending a great deal more time outdoors, enjoying the pleasant weather at the beach, on the water, hiking in the mountains and what have you. Nothing can put a damper on these activities like sudden thunderstorms, which pop up with much greater frequency in the warmer weather. While you can get a basic idea of the day's forecast with your iPhone's Weather app, a "chance of showers" or "scattered thunderstorms" is not going to cut it if you are planning a day of fishing on a lake or hiking above the tree line - you need a radar app.
Not too long ago, app icons on the iPhone home screen were frozen in time. The latest version of iOS delivers an animated clock, which displays the real time down to the seconds. The jailbreak tweak Meteor delivers weather information in a similar fashion, with the latest conditions available at a glance. Not only is the Weather app icon transformed, but current weather appears on the status bar as well.