Things you will need for this
You will need a DHT22 or DHT11 temperature/humidity sensor

I used this tutorial https://www.thegeekpub.com/236867/using-the-dht11-temperature-sensor-with-the-raspberry-pi/ to help.

I used the pi in my office so this is the trigger:

{"trigger":"office con","command":"python3 /home/pi/scripts/DHT.py 4 22","ground":"background","voice":"Office conditions","voiceReply":"Current office conditions are {{result}} percent","allowParams": "false"},
 

The python script allows for a DHT11 or DHT22 and to use different GPIO pins thus the 4(pin) and 22(the DHT) in the command.

#Libraries
import Adafruit_DHT as dht
import sys
import os
#Set DATA pin
Pin = sys.argv[1]
DHT = int(sys.argv[2])
if DHT == 11:
   #Read Temp and Hum from DHT11
  h,t = dht.read_retry(dht.DHT11 , Pin)
 #Print Temperature and Humidity on Shell window
  print('Temperature print={0:0.1f}  Humidity={1:0.1f}'.format(t,h))
  result = ('Temperature={0:0.1f}Humidity={1:0.1f}'.format(t,h))
  os.system('~/.TRIGGERcmdData/sendresult.sh ' + 'Temp={0:0.1f}  Humidity={1:0.1f}'.format(t,h))

if DHT == 22:
   #Read Temp and Humidity from DHT22
   h,t = dht.read_retry(dht.DHT22 , Pin)
   #Print Temperature and Humidity on Shell window
   print('Temp={0:0.1f}  Humidity={1:0.1f}'.format(t,h))
   result = ('Temperature={0:0.1f}Humidity={1:0.1f}'.format(t,h))
   os.system('~/.TRIGGERcmdData/sendresult.sh ' + result)

quit

if you have the DHT hooked up correctly and you execute the script from the shell you should see a return something like this:
Temp=20.1 Humidity=32.1
sh: 1: /home/pi/.TRIGGERcmdData/sendresult.sh: not found
pi@raspberrypi:~/scripts $