diff --git a/homeassistant/components/airgradient/button.py b/homeassistant/components/airgradient/button.py
index 32a9b5adedf..c4cbb92f9ba 100644
--- a/homeassistant/components/airgradient/button.py
+++ b/homeassistant/components/airgradient/button.py
@@ -20,6 +20,8 @@ from .const import DOMAIN
 from .coordinator import AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class AirGradientButtonEntityDescription(ButtonEntityDescription):
diff --git a/homeassistant/components/airgradient/number.py b/homeassistant/components/airgradient/number.py
index 7fd282ddd8b..95a26f66530 100644
--- a/homeassistant/components/airgradient/number.py
+++ b/homeassistant/components/airgradient/number.py
@@ -21,6 +21,8 @@ from .const import DOMAIN
 from .coordinator import AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class AirGradientNumberEntityDescription(NumberEntityDescription):
diff --git a/homeassistant/components/airgradient/quality_scale.yaml b/homeassistant/components/airgradient/quality_scale.yaml
index 43816401cdb..333c64ded00 100644
--- a/homeassistant/components/airgradient/quality_scale.yaml
+++ b/homeassistant/components/airgradient/quality_scale.yaml
@@ -38,7 +38,7 @@ rules:
   entity-unavailable: done
   integration-owner: done
   log-when-unavailable: done
-  parallel-updates: todo
+  parallel-updates: done
   reauthentication-flow:
     status: exempt
     comment: |
diff --git a/homeassistant/components/airgradient/select.py b/homeassistant/components/airgradient/select.py
index af56802d842..467904654a4 100644
--- a/homeassistant/components/airgradient/select.py
+++ b/homeassistant/components/airgradient/select.py
@@ -21,6 +21,8 @@ from .const import DOMAIN, PM_STANDARD, PM_STANDARD_REVERSE
 from .coordinator import AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class AirGradientSelectEntityDescription(SelectEntityDescription):
diff --git a/homeassistant/components/airgradient/sensor.py b/homeassistant/components/airgradient/sensor.py
index 273ba20d6b7..3b20b31f923 100644
--- a/homeassistant/components/airgradient/sensor.py
+++ b/homeassistant/components/airgradient/sensor.py
@@ -35,6 +35,8 @@ from .const import PM_STANDARD, PM_STANDARD_REVERSE
 from .coordinator import AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 0
+
 
 @dataclass(frozen=True, kw_only=True)
 class AirGradientMeasurementSensorEntityDescription(SensorEntityDescription):
diff --git a/homeassistant/components/airgradient/switch.py b/homeassistant/components/airgradient/switch.py
index 329f704e755..6cdcbb53fae 100644
--- a/homeassistant/components/airgradient/switch.py
+++ b/homeassistant/components/airgradient/switch.py
@@ -22,6 +22,8 @@ from .const import DOMAIN
 from .coordinator import AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 1
+
 
 @dataclass(frozen=True, kw_only=True)
 class AirGradientSwitchEntityDescription(SwitchEntityDescription):
diff --git a/homeassistant/components/airgradient/update.py b/homeassistant/components/airgradient/update.py
index 7c040524243..12cec65f791 100644
--- a/homeassistant/components/airgradient/update.py
+++ b/homeassistant/components/airgradient/update.py
@@ -11,6 +11,7 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from . import AirGradientConfigEntry, AirGradientCoordinator
 from .entity import AirGradientEntity
 
+PARALLEL_UPDATES = 1
 SCAN_INTERVAL = timedelta(hours=1)