diff --git a/components/sensor/bme680_bsec.rst b/components/sensor/bme680_bsec.rst
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+BME680 Temperature+Pressure+Humidity+Gas Sensor via BSEC
+========================================================
+
+.. seo::
+ :description: Instructions for setting up BME680 temperature, humidity, pressure and gas sensors via BSEC.
+ :image: bme680.jpg
+ :keywords: BME680
+
+The ``bme680_bsec`` sensor platform allows you to use your BME680
+(`datasheet <https://cdn-shop.adafruit.com/product-files/3660/BME680.pdf>`__,
+`Adafruit`_) temperature, pressure and humidity and gas sensors with ESPHome via the Bosch Sensortec Environmental Cluster (BSEC)
+software library. The use of Bosch's proprietary algorithms provides additional Indoor Air Quality (IAQ), CO2 equivalent and Breath
+Volatile Organic Compounds (VOC) equivalent measurements.
+
+.. note::
+
+ The Bosch BSEC library is only available for use after accepting its software license agreement. By enabling this component,
+ you are explicitly agreeing to the terms of the `BSEC license agreement`_. You must not distribute any compiled firmware
+ binaries that include this component.
+
+The :ref:`I²C <i2c>` is required to be set up in your configuration for this sensor to work.
+
+.. figure:: images/bme680-full.jpg
+ :align: center
+ :width: 50.0%
+
+ BME680 Temperature, Pressure, Humidity & Gas Sensor.
+
+.. _BSEC license agreement: https://www.bosch-sensortec.com/media/boschsensortec/downloads/bsec/2017-07-17_clickthrough_license_terms_environmentalib_sw_clean.pdf
+
+.. _Adafruit: https://www.adafruit.com/product/3660
+
+.. code-block:: yaml
+
+ # Minimal example configuration with common sensors
+ i2c:
+
+ bme680_bsec:
+
+ sensor:
+ - platform: bme680_bsec
+ temperature:
+ name: "BME680 Temperature"
+ pressure:
+ name: "BME680 Pressure"
+ humidity:
+ name: "BME680 Humidity"
+ iaq:
+ name: "BME680 IAQ"
+ co2_equivalent:
+ name: "BME680 CO2 Equivalent"
+ breath_voc_equivalent:
+ name: "BME680 Breath VOC Equivalent"
+
+ text_sensor:
+ - platform: bme680_bsec
+ iaq_accuracy:
+ name: "BME680 IAQ Accuracy"
+
+Configuration variables:
+------------------------
+
+The configuration is made up of three parts: The central hub, individual sensors, and accuracy text sensor.
+
+Hub Configuration:
+
+- **address** (*Optional*, int): Manually specify the I^2C address of
+ the sensor. Defaults to ``0x76``. Another address can be ``0x77``.
+
+- **temperature_offset** (*Optional*, float): Temperature offset if device is in enclosure and reads too high.
+ Defaults to ``0``.
+
+- **iaq_mode** (*Optional*, string): IAQ calculation mode. Default is ``static`` for static applications (e.g. fixed indoor devices).
+ Can be ``mobile`` for mobile applications (e.g. carry-on devices).
+
+- **sample_rate** (*Optional*, string): Sample rate. Default is ``lp`` for low power consumption, sampling every 3 seconds.
+ Can be ``ulp`` for ultra low power, sampling every 5 minutes.
+
+- **state_save_interval** (*Optional*, :ref:`config-time`): The minimum interval at which to save calibrated BSEC algorithm state to
+ flash so that calibration does have to start from zero on device restart. Defaults to ``6h``.
+
+Sensor Configuration:
+
+- **temperature** (*Optional*): The information for the temperature sensor.
+
+ - **name** (**Required**, string): The name for the temperature sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **pressure** (*Optional*): The information for the pressure sensor.
+
+ - **name** (**Required**, string): The name for the pressure sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **humidity** (*Optional*): The information for the humidity sensor.
+
+ - **name** (**Required**, string): The name for the humidity sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **gas_resistance** (*Optional*): The information for the gas sensor.
+
+ - **name** (**Required**, string): The name for the gas resistance sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **iaq** (*Optional*): The information for the IAQ sensor.
+
+ - **name** (**Required**, string): The name for the IAQ sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **iaq_accuracy** (*Optional*): The information for the numeric IAQ accuracy sensor.
+
+ - **name** (**Required**, string): The name for the IAQ accuracy sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **co2_equivalent** (*Optional*): The information for the CO2 equivalent sensor.
+
+ - **name** (**Required**, string): The name for the CO2 equivalent sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+- **breath_voc_equivalent** (*Optional*): The information for the Breath VOC equivalent humidity sensor.
+
+ - **name** (**Required**, string): The name for the Breath VOC equivalent sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`Sensor <config-sensor>`.
+
+Text Sensor Configuration:
+
+- **iaq_accuracy** (*Optional*): The information for the IAQ accuracy sensor.
+
+ - **name** (**Required**, string): The name for the IAQ accuracy sensor.
+ - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+ - All other options from :ref:`TextSensor <config-text_sensor>`.
+
+.. figure:: images/bme680-bsec-ui.png
+ :align: center
+ :width: 80.0%
+
+Advanced configuration
+----------------------
+
+The following configuration shows all the available sensors and optional settings for the component. It also includes an example of filtering to guard against
+outliers, limit the number of updates sent to home assistant and reduce storage requirements in other systems such as influxdb used to store historical data.
+
+For each sensor all other options from :ref:`Sensor <config-sensor>` and :ref:`TextSensor <config-text_sensor>` are also available for filtering, automation and so on.
+
+.. code-block:: yaml
+
+ bme680_bsec:
+ # i2c address
+ # -----------
+ # Common values are:
+ # - 0x76
+ # - 0x77
+ # Default: 0x76
+ address: 0x76
+
+ # Temperature offset
+ # ------------------
+ # Useful if device is in enclosure and reads too high
+ # Default: 0
+ temperature_offset: 0
+
+ # IAQ calculation mode
+ # --------------------
+ # Available options:
+ # - static (for fixed position devices)
+ # - mobile (for on person or other moveable devices)
+ # Default: static
+ iaq_mode: static
+
+ # Sample rate
+ # -----------
+ # Available options:
+ # - lp (low power - samples every 3 seconds)
+ # - ulp (ultra low power - samples every 5 minutes)
+ # Default: lp
+ sample_rate: lp
+
+ # Interval at which to save BSEC state
+ # ------------------------------------
+ # Default: 6h
+ state_save_interval: 6h
+
+ sensor:
+ - platform: bme680_bsec
+ temperature:
+ # Temperature in °C
+ name: "BME680 Temperature"
+ filters:
+ - median
+ pressure:
+ # Pressure in hPa
+ name: "BME680 Pressure"
+ filters:
+ - median
+ humidity:
+ # Relative humidity %
+ name: "BME680 Humidity"
+ filters:
+ - median
+ gas_resistance:
+ # Gas resistance in Ω
+ name: "BME680 Gas Resistance"
+ filters:
+ - median
+ iaq:
+ # Indoor air quality value
+ name: "BME680 IAQ"
+ filters:
+ - median
+ iaq_accuracy:
+ # IAQ accuracy as a numeric value of 0, 1, 2, 3
+ name: "BME680 Numeric IAQ Accuracy"
+ co2_equivalent:
+ # CO2 equivalent estimate in ppm
+ name: "BME680 CO2 Equivalent"
+ filters:
+ - median
+ breath_voc_equivalent:
+ # Volatile organic compounds equivalent estimate in ppm
+ name: "BME680 Breath VOC Equivalent"
+ filters:
+ - median
+
+ text_sensor:
+ - platform: bme680_bsec
+ iaq_accuracy:
+ # IAQ accuracy as a text value of Stabilizing, Uncertain, Calibrating, Calibrated
+ name: "BME680 IAQ Accuracy"
+
+
+Indoor Air Quality (IAQ) Measurement
+------------------------------------
+
+Indoor Air Quality measurements are expressed in the IAQ index scale with 25IAQ corresponding to typical good air and 250IAQ
+indicating typical polluted air after calibration.
+
+.. _bsec-calibration:
+
+IAQ Accuracy and Calibration
+----------------------------
+
+The BSEC algorithm automatically gathers data in order to calibrate the IAQ measurements. The IAQ Accuracy sensor will give one
+of the following values:
+
+- ``Stabilizing``: The device has just started, and the sensor is stabilizing (this typically lasts 5 minutes)
+- ``Uncertain``: The background history of BSEC is uncertain. This typically means the gas sensor data was too
+ stable for BSEC to clearly define its reference.
+- ``Calibrating``: BSEC found new calibration data and is currently calibrating.
+- ``Calibrated``: BSEC calibrated successfully.
+
+Every ``state_save_interval``, or as soon thereafter as full calibration is reached, the current algorithm state is saved to flash
+so that the process does not have to start from zero on device restart.
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- :doc:`bme680`
+- :apiref:`bme680_bsec/bme680_bsec.h`
+- `BSEC Arduino Library <https://github.com/BoschSensortec/BSEC-Arduino-library>`__ by `Bosch Sensortec <https://www.bosch-sensortec.com/>`__
+- `Bosch Sensortec Community <https://community.bosch-sensortec.com/>`__
+- :ghedit:`Edit`
diff --git a/components/sensor/images/bme680-bsec-ui.png b/components/sensor/images/bme680-bsec-ui.png
new file mode 100644
index 000000000..f85dea8fd
Binary files /dev/null and b/components/sensor/images/bme680-bsec-ui.png differ
diff --git a/index.rst b/index.rst
index 3b3fe3968..27eb9c151 100644
--- a/index.rst
+++ b/index.rst
@@ -106,6 +106,7 @@ Sensor Components
BLE RSSI, components/sensor/ble_rssi, bluetooth.svg
BME280, components/sensor/bme280, bme280.jpg
BME680, components/sensor/bme680, bme680.jpg
+ BME680 via BSEC, components/sensor/bme680_bsec, bme680.jpg
BMP085, components/sensor/bmp085, bmp180.jpg
BMP280, components/sensor/bmp280, bmp280.jpg
CCS811, components/sensor/ccs811, ccs811.jpg