The Tempest weather uses an API on Weatherfunnel that can be accessed to create an APRS string. You will need to have the appropriate access token from weather funnel. A quick Google search will show you how to get that. Must have a Weatherfunnel (Tempest) account. There is some documentation as well on the Weatherfunnel API that may be worth reading.
https://weatherflow.github.io/Tempest/api
Anyways, a quick and dirty PHP commend line script to output the proper weather APRS string.
<?php
//the ######### in the following line must be your weather station ID. The xxxxxxxxxxxxxxxxxxx in the next line is your access token.
$json_string = 'https://swd.weatherflow.com/swd/rest/observations/station/########?token=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
$jsondata = file_get_contents($json_string);
$result = json_decode($jsondata, true);
//Un-Comment the next line if you want to see all of the values returned.
//print_r($result);
$tempf=round((($result['obs'][0]['air_temperature'])*1.8)+32);
$wind_speed=round($result['obs'][0]['wind_avg']*2.237);
$wind_gust=round($result['obs'][0]['wind_gust']*2.237);
//Make sure you change the Latitude/Longitude Degrees in the first part of the echo line.
//
echo "_3941.42N/10446.43W_".$result['obs'][0]['wind_direction']."/".$wind_speed."G".$wind_gust."T".$tempf."P".$result['obs'][0]['precip']."h".$resul
t['obs'][0]['relative_humidity']."b".$result['obs'][0]['barometric_pressure']."\n";
?>My cron statement to generate a weather file for bpq32 is:
*/5 * * * * /usr/bin/php /usr/local/bpq32/weatherdecode.php > /usr/local/bpq32/current.txt
And then in bpq32.cfg find the WXFileName and set to:
WXFileName=/usr/local/bpq32/current.txt
You will need to restart the BPQ32 in order for any changes to take effect.