diff --git a/homeassistant/components/ambient_station/__init__.py b/homeassistant/components/ambient_station/__init__.py
index 8ee37f4503e..120b83d7923 100644
--- a/homeassistant/components/ambient_station/__init__.py
+++ b/homeassistant/components/ambient_station/__init__.py
@@ -10,6 +10,7 @@ from homeassistant.config_entries import SOURCE_IMPORT
 from homeassistant.const import (
     ATTR_LOCATION,
     ATTR_NAME,
+    CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
     CONCENTRATION_PARTS_PER_MILLION,
     CONF_API_KEY,
     DEGREE,
@@ -126,6 +127,8 @@ TYPE_TEMPF = "tempf"
 TYPE_TEMPINF = "tempinf"
 TYPE_TOTALRAININ = "totalrainin"
 TYPE_UV = "uv"
+TYPE_PM25 = "pm25"
+TYPE_PM25_24H = "pm25_24h"
 TYPE_WEEKLYRAININ = "weeklyrainin"
 TYPE_WINDDIR = "winddir"
 TYPE_WINDDIR_AVG10M = "winddir_avg10m"
@@ -218,6 +221,13 @@ SENSOR_TYPES = {
     TYPE_TEMPINF: ("Inside Temp", TEMP_FAHRENHEIT, TYPE_SENSOR, "temperature"),
     TYPE_TOTALRAININ: ("Lifetime Rain", "in", TYPE_SENSOR, None),
     TYPE_UV: ("uv", "Index", TYPE_SENSOR, None),
+    TYPE_PM25: ("PM25", CONCENTRATION_MICROGRAMS_PER_CUBIC_METER, TYPE_SENSOR, None),
+    TYPE_PM25_24H: (
+        "PM25 24h Avg",
+        CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
+        TYPE_SENSOR,
+        None,
+    ),
     TYPE_WEEKLYRAININ: ("Weekly Rain", "in", TYPE_SENSOR, None),
     TYPE_WINDDIR: ("Wind Dir", DEGREE, TYPE_SENSOR, None),
     TYPE_WINDDIR_AVG10M: ("Wind Dir Avg 10m", DEGREE, TYPE_SENSOR, None),