diff --git a/homeassistant/components/nam/const.py b/homeassistant/components/nam/const.py
index e7c6f2532ef..2b6a74383b5 100644
--- a/homeassistant/components/nam/const.py
+++ b/homeassistant/components/nam/const.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 from datetime import timedelta
 from typing import Final
 
+SUFFIX_CAQI: Final = "_caqi"
 SUFFIX_P0: Final = "_p0"
 SUFFIX_P1: Final = "_p1"
 SUFFIX_P2: Final = "_p2"
@@ -22,12 +23,16 @@ ATTR_HECA_HUMIDITY: Final = "heca_humidity"
 ATTR_HECA_TEMPERATURE: Final = "heca_temperature"
 ATTR_MHZ14A_CARBON_DIOXIDE: Final = "mhz14a_carbon_dioxide"
 ATTR_SDS011: Final = "sds011"
+ATTR_SDS011_CAQI: Final = f"{ATTR_SDS011}{SUFFIX_CAQI}"
+ATTR_SDS011_CAQI_LEVEL: Final = f"{ATTR_SDS011}{SUFFIX_CAQI}_level"
 ATTR_SDS011_P1: Final = f"{ATTR_SDS011}{SUFFIX_P1}"
 ATTR_SDS011_P2: Final = f"{ATTR_SDS011}{SUFFIX_P2}"
 ATTR_SHT3X_HUMIDITY: Final = "sht3x_humidity"
 ATTR_SHT3X_TEMPERATURE: Final = "sht3x_temperature"
 ATTR_SIGNAL_STRENGTH: Final = "signal"
 ATTR_SPS30: Final = "sps30"
+ATTR_SPS30_CAQI: Final = f"{ATTR_SPS30}{SUFFIX_CAQI}"
+ATTR_SPS30_CAQI_LEVEL: Final = f"{ATTR_SPS30}{SUFFIX_CAQI}_level"
 ATTR_SPS30_P0: Final = f"{ATTR_SPS30}{SUFFIX_P0}"
 ATTR_SPS30_P1: Final = f"{ATTR_SPS30}{SUFFIX_P1}"
 ATTR_SPS30_P2: Final = f"{ATTR_SPS30}{SUFFIX_P2}"
diff --git a/homeassistant/components/nam/sensor.py b/homeassistant/components/nam/sensor.py
index 6229102035e..01107baf31b 100644
--- a/homeassistant/components/nam/sensor.py
+++ b/homeassistant/components/nam/sensor.py
@@ -43,11 +43,15 @@ from .const import (
     ATTR_HECA_HUMIDITY,
     ATTR_HECA_TEMPERATURE,
     ATTR_MHZ14A_CARBON_DIOXIDE,
+    ATTR_SDS011_CAQI,
+    ATTR_SDS011_CAQI_LEVEL,
     ATTR_SDS011_P1,
     ATTR_SDS011_P2,
     ATTR_SHT3X_HUMIDITY,
     ATTR_SHT3X_TEMPERATURE,
     ATTR_SIGNAL_STRENGTH,
+    ATTR_SPS30_CAQI,
+    ATTR_SPS30_CAQI_LEVEL,
     ATTR_SPS30_P0,
     ATTR_SPS30_P1,
     ATTR_SPS30_P2,
@@ -132,6 +136,17 @@ SENSORS: tuple[SensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.CO2,
         state_class=SensorStateClass.MEASUREMENT,
     ),
+    SensorEntityDescription(
+        key=ATTR_SDS011_CAQI,
+        name="SDS011 CAQI",
+        icon="mdi:air-filter",
+    ),
+    SensorEntityDescription(
+        key=ATTR_SDS011_CAQI_LEVEL,
+        name="SDS011 CAQI level",
+        icon="mdi:air-filter",
+        device_class="nam__caqi_level",
+    ),
     SensorEntityDescription(
         key=ATTR_SDS011_P1,
         name="SDS011 particulate matter 10",
@@ -160,6 +175,17 @@ SENSORS: tuple[SensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.TEMPERATURE,
         state_class=SensorStateClass.MEASUREMENT,
     ),
+    SensorEntityDescription(
+        key=ATTR_SPS30_CAQI,
+        name="SPS30 CAQI",
+        icon="mdi:air-filter",
+    ),
+    SensorEntityDescription(
+        key=ATTR_SPS30_CAQI_LEVEL,
+        name="SPS30 CAQI level",
+        icon="mdi:air-filter",
+        device_class="nam__caqi_level",
+    ),
     SensorEntityDescription(
         key=ATTR_SPS30_P0,
         name="SPS30 particulate matter 1.0",
diff --git a/homeassistant/components/nam/strings.sensor.json b/homeassistant/components/nam/strings.sensor.json
new file mode 100644
index 00000000000..ee53079d7d0
--- /dev/null
+++ b/homeassistant/components/nam/strings.sensor.json
@@ -0,0 +1,11 @@
+{
+  "state": {
+    "nam__caqi_level": {
+      "very low": "Very low",
+      "low": "Low",
+      "medium": "Medium",
+      "high": "High",
+      "very high": "Very high"
+    }
+  }
+}
diff --git a/tests/components/nam/test_sensor.py b/tests/components/nam/test_sensor.py
index 9fbb55a6474..28eaea54186 100644
--- a/tests/components/nam/test_sensor.py
+++ b/tests/components/nam/test_sensor.py
@@ -239,6 +239,25 @@ async def test_sensor(hass):
         == CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
     )
 
+    entry = registry.async_get("sensor.nettigo_air_monitor_sds011_caqi")
+    assert entry
+    assert entry.unique_id == "aa:bb:cc:dd:ee:ff-sds011_caqi"
+
+    state = hass.states.get("sensor.nettigo_air_monitor_sds011_caqi")
+    assert state
+    assert state.state == "19"
+    assert state.attributes.get(ATTR_ICON) == "mdi:air-filter"
+
+    entry = registry.async_get("sensor.nettigo_air_monitor_sds011_caqi_level")
+    assert entry
+    assert entry.unique_id == "aa:bb:cc:dd:ee:ff-sds011_caqi_level"
+
+    state = hass.states.get("sensor.nettigo_air_monitor_sds011_caqi_level")
+    assert state
+    assert state.state == "very low"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == "nam__caqi_level"
+    assert state.attributes.get(ATTR_ICON) == "mdi:air-filter"
+
     entry = registry.async_get(
         "sensor.nettigo_air_monitor_sds011_particulate_matter_10"
     )
@@ -271,6 +290,25 @@ async def test_sensor(hass):
         == CONCENTRATION_MICROGRAMS_PER_CUBIC_METER
     )
 
+    entry = registry.async_get("sensor.nettigo_air_monitor_sps30_caqi")
+    assert entry
+    assert entry.unique_id == "aa:bb:cc:dd:ee:ff-sps30_caqi"
+
+    state = hass.states.get("sensor.nettigo_air_monitor_sps30_caqi")
+    assert state
+    assert state.state == "54"
+    assert state.attributes.get(ATTR_ICON) == "mdi:air-filter"
+
+    entry = registry.async_get("sensor.nettigo_air_monitor_sps30_caqi_level")
+    assert entry
+    assert entry.unique_id == "aa:bb:cc:dd:ee:ff-sps30_caqi_level"
+
+    state = hass.states.get("sensor.nettigo_air_monitor_sps30_caqi_level")
+    assert state
+    assert state.state == "medium"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == "nam__caqi_level"
+    assert state.attributes.get(ATTR_ICON) == "mdi:air-filter"
+
     entry = registry.async_get(
         "sensor.nettigo_air_monitor_sps30_particulate_matter_1_0"
     )