How to Get the Current Weather
For a long time, I was happy if an FBO had a radio where I could tune the ATIS or automated weather before getting into the plane. This would allow me to skip listening to the weather in the airplane with the engine running, giving me a quicker exit from the ramp while burning a little less fuel. I would also be able to brief my taxi route from the ramp since I would know which runway was in use before getting in the plane.
As we progress forward in technology, I’m constantly amazed at how much more planning I can do from the palm of my hand. Now, I can call a phone number and get the ATIS, AWOS, or ASOS, depending on the size of the airport; if you prefer reading a text version…well, there’s an app for that.
With this technology, it’s very important for pilots to be aware of what service they are utilizing when calling these numbers. Usually only a Class B or larger Class C airport will have a phone number specifically for ATIS as well as one for AWOS/ASOS. These are listed in the Airport/Facility Directory (AFD), as well as all flight planning apps (Foreflight, Garmin Pilot, Stratus Insight). More then one pilot has called the AWOS/ASOS number for an airport thinking they would receive the ATIS (because towered airports that have ATIS phone numbers often also have AWOS/ASOS phone numbers that are different). Since the pilot didn’t hear a code on the phone, that led to the false thinking that either the tower was closed or the pilot did not have the code (ie. Information Bravo) to give to ground control when calling for taxi instructions. The minute weather can be very useful for flight planning, but the ATIS must be received before contacting ATC at a towered airport.
Sometimes, you may get a busy tone if someone else is on the line. Usually, waiting a few minutes and trying again will lead to success. Just like old school phone lines, only one call can go through at at time! If it’s a particularly stormy day, you may be fighting a number of pilots to get on the line. In this case, an app where you can read the ATIS may be particularly helpful (Yes, there actually is a dedicated ATIS App!).
The ATIS app allows us lowly pilots without an Aircraft Communicating and Reporting System (ACARS) to access the Digital ATIS (D-ATIS ) at airports where ATIS is available. Only 76 airports in the US have D-ATIS, most of which are either Class B or busier Class C airports. Foreflight also provides D-ATIS textually at the same 76 airports, though it is only accessible depending on which subscription level you have with Foreflight (since I’m not a Garmin Pilot or Stratus Insight user, I’m not sure if either of them give D-ATIS reports).
With Foreflight’s D-ATIS, it does not get updated over ADS-B, only when your iPad or phone have an internet signal. When inbound to an airport with D-ATIS, the pilot has to listen to the radio frequency to get the current ATIS. Foreflight will display the last D-ATIS it received, but typically, it’s old. Check the time in the upper right hand corner.
On the Airports page on Foreflight, tap Info, then tap Weather & Advisory and the phone numbers will display along with the ATIS frequency 
On the Airports page, tab Weather, then tap D-ATIS, and the last received D-ATIS will display. Note the age of the D-ATIS in the upper right hand corner
Foreflight now offers Pre-Departure Clearance (PDC) at those same 76 airports. With either a pre-registered tail number or a Foreflight call sign (starting in FFL), once a pilot files an IFR flight plan, the D-ATIS and the IFR clearance in it’s entirety are texted to the phone number the pilot filed with. All that is left to do is call ground, state “I have information Romeo and my clearance, ready to taxi,” then away you go. Skipping listening to the ATIS and talking to Clearance Delivery saves a good 5-10 minutes at times, depending on how busy the airport is.
These days, there are many different avenues to get the current weather (and IFR clearances!). When calling on the phone, the key is to be aware, know which number you are calling and, if you are expecting to hear an ATIS message but instead hear the AWOS/ASOS, verify the Chart Supplement Guide and Notices to Airmen (NOTAMS) to check tower hours of operation before flying into the airspace.
