ESP8266 MQTT Weather station

ESP8266_MQTT.ino

#include <PubSubClient.h>
#include <ESP8266WiFi.h>
#include <DHT.h>


#define wifi_ssid "ssid" //your Wifi SSID
#define wifi_password "password123" //your Wifi password
int DHTPIN = 2; //the pin your dht board's signal is connected to
#define DHTTYPE DHT11 //the type of dht board you are using - DHT11, DHT22...
#define ClientID "BalconyESP8266" //the clientID what your MQTT server will see
#define username "myuser" //your MQTT server username
#define password "mypassword1234" //your MQTT server password
#define topic "home/balcony/temperature" //your MQTT server topic
#define server "http://cloudmqtt.com" //your MQTT server - f.e http://cloudmqtt.com or just the name on local network
int port = 1883; //MQTT server's port
int humidity = 0;
int temperature = 0;
char MQTTTemp[] = "1";

DHT dht(DHTPIN, DHTTYPE);
WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  setup_wifi();
  dht.begin();
}

void setup_wifi() {
  delay(1000);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(wifi_ssid);
  WiFi.begin(wifi_ssid, wifi_password); //connects to wifi
  WiFi.mode(WIFI_STA); //sets the module to connect to AP only and won't act as hotspot
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP()); //prints network details
}

void getTemp () {
  delay(5000);
  humidity = dht.readHumidity();
  temperature = dht.readTemperature(); //reads dht sensor
  sprintf(MQTTTemp, "%d", temperature); //converts dht int to char format
  if (isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" *C ");
}

void connectMQTT () {
  client.setServer(server, port);
  if (client.connect(ClientID, username, password)) {  //connects to MQTT server
    Serial.println("MQTT Connected!");
  } else {
    Serial.println("MQTT *NOT* Connected...reconnecting...");
  }
}

void loop() {
  delay(5000);
  getTemp();
  if(WiFi.status() == WL_CONNECTED) {
    Serial.println("Wifi is connected.");
  } else {
    Serial.println("Wifi is NOT connected...reconnecting");
    setup_wifi();
  }
  connectMQTT();
  if(client.publish (topic, MQTTTemp)) {   //sends data to MQTT server
    Serial.println("Payload sent!");
  } else {
    Serial.println("Payload *NOT* sent.");
  }
}