Apple Watch Weather app for Pilots

photo of app in use, in the air
The app in use, in the air, while flying N323SB near KOEO
(my copilot spelled me for a moment so I could snap the picture)

image of weather view image of station chooser

An app for Apple Watch with a single, simple function: to show the current weather conditions reported by a nearby Automated Weather Observation Station, typically sited at an airport.

This information is useful to light plane VFR pilots, who normally get it more slowly from a tape loop broadcast on the radio.

PilotAWOS is free to use. All functionality is enabled; nothing is paywalled. There is an in-app purchase option to contribute to the author; it unlocks nothing but the satisfaction of a good deed.


This is a Watch-Only app, without a counterpart app on the phone.

Tap once to choose a station. Swipe left to access Settings or Legend.

This app features a full suite of complications, including styles for all slots. All offer two options: wind barb plus cloud circle, or altimeter setting plus precipitation symbol; except for the largest slot, which combines both.

Weather is re-fetched half-hourly. The re-fetch times automatically adjust to sync with the weather station’s own schedule. A refresh can be manually triggered by pulling down on the main screen.

Weather is displayed using a modified Station Model layout: the right-center and lower-right fields hold Cloud Altitude and Station ID, respectively.

The meaning of the various fields and symbols:

  • Top left: temperature
  • Top right: barometric pressure
  • Middle left: visibility distance
  • Middle right: height of cloud bases above ground
  • Bottom left: dew point
  • Bottom right: this observation’s age in minutes, above the current station ID
    • If this field shows a “!” alert symbol, the most recent attempt to fetch the weather has failed. This is normal when out of cellular coverage.
  • In the center, a circle that indicates cloud coverage. Empty/quarter/half/three-quarter/filled indicates clear/few/scattered/broken/overcast clouds.
  • Radiating from the cloud circle is the wind barb: it points toward the direction the wind is coming from.
    • Feathers on the end of the barb indicate speed: 10kt per full barb, in half-barb (5kt) steps.
    • Red feathers indicate gusts, e.g.: one white feather and one half-white, half-red feather means 15kt gusting to 20kt.
    • If air is calm, an extra circle is drawn around the cloud circle.
    • It is very common for this instrument to be offline at a station! In this case the barb is not drawn.
  • If precipitation is present, its standard symbols are shown in the area between visibility and dew point.

Symbol Keys:


Wind Barbs


Cloud Circles


Precipitation 1 Precipitation 2

This app relies on services provided by the US National Weather Service, and as such, is only useful within the United States.