DewPtFm vs AQ Alert

This app computes the dew point temperature and relative humidity from a wet bulb temperature, dry bulb temperature and barometric pressure. If a barometer is not available a guess of 29.8 inches of mercury will usually give a near enough result. Temperatures are in degrees Fahrenheit and pressures in inches of mercury. Uses a computation method suggested by the National Weather Service of the National Oceanic and Atmospheric Administration, USA.

Locate Purple Air sensors important to you, and add them to your watch list. Once a sensor is in your watch list, you can set alerts and receive push messages when air quality reported by the sensor crosses key thresholds, or get notified when a sensor goes offline. The Purple Air "community scientist" sensor network provides data about air quality to researchers and the public. Using AQ Alert, you can stay updated without checking the Purple Air map. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/