#include <DHT.h>
#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

void setup() {

  Serial.begin(9600);
  
  dht.begin();

  Serial.println("DHT22 sensor reading...");
}

void loop() {

  delay(2000);
  
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();
  
  if (isnan(humidity) || 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");

  if (temperature >= 20 && temperature <= 30) {
    Serial.println("Temperature is Good.");
  } else {
    Serial.println("Temperature is Bad.");
  }
  if (humidity >= 30 && humidity <= 60) {
    Serial.println("Humidity is Good.");
  } else {
    Serial.println("Humidity is Bad.");
  }
}