diff --git a/esphome/components/number/__init__.py b/esphome/components/number/__init__.py
index c2cad2f7f1..76a7b05ea1 100644
--- a/esphome/components/number/__init__.py
+++ b/esphome/components/number/__init__.py
@@ -51,6 +51,7 @@ from esphome.const import (
     DEVICE_CLASS_OZONE,
     DEVICE_CLASS_PH,
     DEVICE_CLASS_PM1,
+    DEVICE_CLASS_PM4,
     DEVICE_CLASS_PM10,
     DEVICE_CLASS_PM25,
     DEVICE_CLASS_POWER,
@@ -116,6 +117,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_PM1,
     DEVICE_CLASS_PM10,
     DEVICE_CLASS_PM25,
+    DEVICE_CLASS_PM4,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
     DEVICE_CLASS_PRECIPITATION,
diff --git a/esphome/components/sensor/__init__.py b/esphome/components/sensor/__init__.py
index fe9822b3ca..2b99f68ac0 100644
--- a/esphome/components/sensor/__init__.py
+++ b/esphome/components/sensor/__init__.py
@@ -74,6 +74,7 @@ from esphome.const import (
     DEVICE_CLASS_OZONE,
     DEVICE_CLASS_PH,
     DEVICE_CLASS_PM1,
+    DEVICE_CLASS_PM4,
     DEVICE_CLASS_PM10,
     DEVICE_CLASS_PM25,
     DEVICE_CLASS_POWER,
@@ -143,6 +144,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_PM1,
     DEVICE_CLASS_PM10,
     DEVICE_CLASS_PM25,
+    DEVICE_CLASS_PM4,
     DEVICE_CLASS_POWER,
     DEVICE_CLASS_POWER_FACTOR,
     DEVICE_CLASS_PRECIPITATION,
diff --git a/esphome/const.py b/esphome/const.py
index c91c81f484..3e93200f14 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -1269,6 +1269,7 @@ DEVICE_CLASS_PLUG = "plug"
 DEVICE_CLASS_PM1 = "pm1"
 DEVICE_CLASS_PM10 = "pm10"
 DEVICE_CLASS_PM25 = "pm25"
+DEVICE_CLASS_PM4 = "pm4"
 DEVICE_CLASS_POWER = "power"
 DEVICE_CLASS_POWER_FACTOR = "power_factor"
 DEVICE_CLASS_PRECIPITATION = "precipitation"