Soil Hygrometer Humidity Detection Moisture Sensor
GY-68 BMP180 Digital Barometric Pressure Sensor Breakout
MQ-135 Air Quality Sensor Detection Module
Adafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor The long awaited BME680 from Bosch gives you all the environmental sensing you want in one small package.
Gravity: i2C BMP280 Barometer Sensor DFRobot presents our new BMP280 barometer sensor. It can detect air pressure, temperature and altitude and is Arduino compatible.
SparkFun Environmental Combo Breakout - CCS811/BME280 (Qwiic) The SparkFun CCS811/BME280 Environmental Combo Breakout takes care of all your atmospheric-quality sensing needs with the popular CCS811 and BME280 ICs.
Gravity: DHT11 Temperature Humidity Sensor For Arduino DFRobot's latest generation of digital DHT11 Temperature and Humidity sensor is as powerful as it used to be but easier to use
DHT22 Temperature and Humidity Sensor DHT22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound has been calibrated digital signal output of the temperature and humidity sensors.
Si7021 Temperature & Humidity Sensor Breakout Board We put this nice sensor on a breakout board with a 3.3V regulator and level shifting so you can use it safely with 3.3V or 5V power & logic.
Waveshare Sensors Pack Tens of Different Sensors in One Pack.