5 of the 14 features in our table differ between the BME680 and the BME280.
±1 °C · ±3 %RH · I²C/SPI · 1.71 to 3.6 V
Adds a gas sensor to the BME280’s temperature, humidity and pressure, for an air-quality index through Bosch’s BSEC library.
Watch out: The gas heater draws about 9 to 13 mA while it runs and warms the chip. The raw output is a resistance; the index needs BSEC (bme68x_bsec2 in ESPHome).
±1 °C · ±3 %RH · I²C/SPI · 1.71 to 3.6 V
Temperature, humidity and pressure in one I²C or SPI chip: the classic weather-station sensor.
Watch out: ±1 °C and ±3 %RH, less accurate than a dedicated humidity sensor. Check the chip: the BMP280 looks almost the same and has no humidity sensor.
| Feature | BME680 | BME280 |
|---|---|---|
| Measures | temperature · humidity · pressure · gas (VOC) | temperature · humidity · pressure |
| Current between readings | 0.15 µA | 0.1 µA |
| ESPHome | bme680 | bme280_i2c / bme280_spi |
| Absolute accuracy | ±0.6 hPa | ±1 hPa |
| Current at 1 reading/s | – | 3.6 µA |
Same on both: temperature accuracy · humidity accuracy · temperature range · interface · I²C address · supply · status · relative accuracy · pressure range.
Open the sensor comparison →Tick what your project needs and see which sensor fits best.
BME680: I²C address, wiring and pull-ups →
BME280: I²C address, wiring and pull-ups →
The BME680 offers a gas sensor for an air-quality index and better absolute accuracy. The BME280 offers a ready-made configuration in this site’s ESPHome generator.
Typical datasheet figures: temperature ±1 °C for the BME680 and ±1 °C for the BME280; humidity ±3 %RH and ±3 %RH. Placement matters as much as accuracy: keep either away from the board’s warm parts.
Often yes: both use I²C or SPI. Change the driver or, in ESPHome, the component (bme680 → bme280_i2c).
DHT22 vs BME280 BME280 vs BMP280
Figures from the makers’ datasheets and product pages and the ESPHome documentation, checked in November 2026.