#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHTPIN 8
#define DHTTYPE DHT22
#define LEDPIN 7
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("System is Monitoring the Temperature...");
  lcd.begin(16, 2);
  dht.begin();
pinMode(LEDPIN, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
float temp = dht.readTemperature();
float humidity =  dht.readHumidity();
delay(1000);

 lcd.setCursor(0, 0);
 lcd.println("temp. : ");
 lcd.print(temp);
 lcd.println(" C ");
 lcd.setCursor(0, 1);
 lcd.println("humi. :");
 lcd.print(humidity);
 lcd.println("%");

if (temp > 25) {
  digitalWrite(LEDPIN, HIGH);
} else {
  digitalWrite(LEDPIN, LOW);
}

}