I found the attached python script to test the sensor, but have no clue how to make it transferring data to luftdaten.info.
Any chance to get the SHT31 sensor covered ?

#------------------------------------------------------------------------

SHT31 abfragen

#------------------------------------------------------------------------
import os, sys, time
import smbus

I2C Bus festlegen

bus = smbus.SMBus(1)

SHT31 Adresse definieren, 0x44(68)

bus.write_i2c_block_data(0x44, 0x2C, [0x06])

time.sleep(0.5)

Daten lesen aus 0x00(00), 6 Bytes

Temp MSB, Temp LSB, Temp CRC, Humididty MSB, Humidity LSB, Humidity CRC

data = bus.read_i2c_block_data(0x44, 0x00, 6)

Daten konvertieren

temp = data[0] * 256 + data[1]
cTemp = -45 + (175 * temp / 65535.0)
fTemp = -49 + (315 * temp / 65535.0)
humidity = 100 * (data[3] * 256 + data[4]) / 65535.0

Daten anzeigen

print "Temperatur in Celsius: %.2f C" %cTemp
print "Temperatur in Fahrenheit: %.2f F" %fTemp
print "Relative Feuchtigkeit: %.2f %%RH" %humidity`