diff --git a/homeassistant/components/airgradient/quality_scale.yaml b/homeassistant/components/airgradient/quality_scale.yaml
new file mode 100644
index 00000000000..d244807a656
--- /dev/null
+++ b/homeassistant/components/airgradient/quality_scale.yaml
@@ -0,0 +1,2 @@
+rules:
+  IQS001: done
diff --git a/script/hassfest/__main__.py b/script/hassfest/__main__.py
index f0b9ad25dd0..81670de5afd 100644
--- a/script/hassfest/__main__.py
+++ b/script/hassfest/__main__.py
@@ -23,6 +23,7 @@ from . import (
     metadata,
     mqtt,
     mypy_config,
+    quality_scale,
     requirements,
     services,
     ssdp,
@@ -43,6 +44,7 @@ INTEGRATION_PLUGINS = [
     json,
     manifest,
     mqtt,
+    quality_scale,
     requirements,
     services,
     ssdp,
diff --git a/script/hassfest/quality_scale.py b/script/hassfest/quality_scale.py
new file mode 100644
index 00000000000..9fe99b922af
--- /dev/null
+++ b/script/hassfest/quality_scale.py
@@ -0,0 +1,57 @@
+"""Validate integration quality scale files."""
+
+from __future__ import annotations
+
+import voluptuous as vol
+from voluptuous.humanize import humanize_error
+
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.util.yaml import load_yaml_dict
+
+from .model import Config, Integration
+
+SCHEMA = vol.Schema(
+    {
+        vol.Required("rules"): vol.Schema(
+            {
+                str: vol.Any(
+                    vol.In(["todo", "done"]),
+                    vol.Schema(
+                        {
+                            vol.Required("status"): vol.In(["todo", "done", "exempt"]),
+                            vol.Optional("comment"): str,
+                        }
+                    ),
+                )
+            }
+        )
+    }
+)
+
+
+def validate_iqs_file(config: Config, integration: Integration) -> None:
+    """Validate quality scale file for integration."""
+    iqs_file = integration.path / "quality_scale.yaml"
+    if not iqs_file.is_file():
+        return
+
+    name = str(iqs_file)
+
+    try:
+        data = load_yaml_dict(name)
+    except HomeAssistantError:
+        integration.add_error("quality_scale", "Invalid quality_scale.yaml")
+        return
+
+    try:
+        SCHEMA(data)
+    except vol.Invalid as err:
+        integration.add_error(
+            "quality_scale", f"Invalid {name}: {humanize_error(data, err)}"
+        )
+
+
+def validate(integrations: dict[str, Integration], config: Config) -> None:
+    """Handle YAML files inside integrations."""
+    for integration in integrations.values():
+        validate_iqs_file(config, integration)