These are message-based "bots" that listen on APRS-IS and reply to APRS messages sent to their callsign. You'll need a radio or app capable of sending APRS messages — address your message to the bot's callsign the same way you'd message another station.
Address a message to WXBOT and get back a National Weather Service forecast for your location.
If you haven't sent a position report, WxBot falls back to your FCC ULS address on file.
Address a message to WXYO with a callsign-SSID or grid square for a more detailed weather readout than WXBOT provides.
Message ANSRVR to join and post to APRS group channels — useful for informal nets and coordination without tying up a repeater.
The Citizen's Weather Observer Program stations report real-time conditions across the network. Query the nearest CWOP station through WXBOT by including its station ID in your message.