diff --git a/homeassistant/components/netatmo/diagnostics.py b/homeassistant/components/netatmo/diagnostics.py
new file mode 100644
index 00000000000..5d9754ea69c
--- /dev/null
+++ b/homeassistant/components/netatmo/diagnostics.py
@@ -0,0 +1,44 @@
+"""Diagnostics support for Netatmo."""
+from __future__ import annotations
+
+from homeassistant.components.diagnostics import REDACTED
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DATA_HANDLER, DOMAIN
+from .data_handler import NetatmoDataHandler
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, config_entry: ConfigEntry
+) -> dict:
+    """Return diagnostics for a config entry."""
+    data_handler: NetatmoDataHandler = hass.data[DOMAIN][config_entry.entry_id][
+        DATA_HANDLER
+    ]
+
+    diagnostics_data = {
+        "info": {
+            **config_entry.as_dict(),
+            "webhook_registered": data_handler.webhook,
+        },
+        "data": data_handler.data,
+    }
+
+    if "token" in diagnostics_data["info"]["data"]:
+        diagnostics_data["info"]["data"]["token"]["access_token"] = REDACTED
+        diagnostics_data["info"]["data"]["token"]["refresh_token"] = REDACTED
+        diagnostics_data["info"]["data"]["token"]["restricted_access_token"] = REDACTED
+        diagnostics_data["info"]["data"]["token"]["restricted_refresh_token"] = REDACTED
+
+    if "webhook_id" in diagnostics_data["info"]["data"]:
+        diagnostics_data["info"]["data"]["webhook_id"] = REDACTED
+
+    if "weather_areas" in diagnostics_data["info"].get("options", {}):
+        for area in diagnostics_data["info"]["options"]["weather_areas"]:
+            for attr in ("lat_ne", "lat_sw", "lon_ne", "lon_sw"):
+                diagnostics_data["info"]["options"]["weather_areas"][area][
+                    attr
+                ] = REDACTED
+
+    return diagnostics_data
diff --git a/tests/components/netatmo/test_diagnostics.py b/tests/components/netatmo/test_diagnostics.py
new file mode 100644
index 00000000000..62e99cba8b2
--- /dev/null
+++ b/tests/components/netatmo/test_diagnostics.py
@@ -0,0 +1,96 @@
+"""Test the Netatmo diagnostics."""
+from unittest.mock import AsyncMock, patch
+
+from homeassistant.setup import async_setup_component
+
+from .common import fake_post_request
+
+from tests.components.diagnostics import get_diagnostics_for_config_entry
+
+
+async def test_entry_diagnostics(hass, hass_client, config_entry):
+    """Test config entry diagnostics."""
+    with patch(
+        "homeassistant.components.netatmo.api.AsyncConfigEntryNetatmoAuth",
+    ) as mock_auth, patch(
+        "homeassistant.helpers.config_entry_oauth2_flow.async_get_config_entry_implementation",
+    ), patch(
+        "homeassistant.components.netatmo.webhook_generate_url"
+    ):
+        mock_auth.return_value.async_post_request.side_effect = fake_post_request
+        mock_auth.return_value.async_addwebhook.side_effect = AsyncMock()
+        mock_auth.return_value.async_dropwebhook.side_effect = AsyncMock()
+        assert await async_setup_component(hass, "netatmo", {})
+
+    await hass.async_block_till_done()
+
+    result = await get_diagnostics_for_config_entry(hass, hass_client, config_entry)
+
+    # ignore for tests
+    result["info"]["data"]["token"].pop("expires_at")
+    result["info"].pop("entry_id")
+
+    assert result["info"] == {
+        "data": {
+            "auth_implementation": "cloud",
+            "token": {
+                "access_token": "**REDACTED**",
+                "restricted_access_token": "**REDACTED**",
+                "expires_in": 60,
+                "refresh_token": "**REDACTED**",
+                "restricted_refresh_token": "**REDACTED**",
+                "scope": [
+                    "read_station",
+                    "read_camera",
+                    "access_camera",
+                    "write_camera",
+                    "read_presence",
+                    "access_presence",
+                    "write_presence",
+                    "read_homecoach",
+                    "read_smokedetector",
+                    "read_thermostat",
+                    "write_thermostat",
+                ],
+                "type": "Bearer",
+            },
+            "webhook_id": "**REDACTED**",
+        },
+        "disabled_by": None,
+        "domain": "netatmo",
+        "options": {
+            "weather_areas": {
+                "Home avg": {
+                    "area_name": "Home avg",
+                    "lat_ne": "**REDACTED**",
+                    "lat_sw": "**REDACTED**",
+                    "lon_ne": "**REDACTED**",
+                    "lon_sw": "**REDACTED**",
+                    "mode": "avg",
+                    "show_on_map": False,
+                },
+                "Home max": {
+                    "area_name": "Home max",
+                    "lat_ne": "**REDACTED**",
+                    "lat_sw": "**REDACTED**",
+                    "lon_ne": "**REDACTED**",
+                    "lon_sw": "**REDACTED**",
+                    "mode": "max",
+                    "show_on_map": True,
+                },
+            }
+        },
+        "pref_disable_new_entities": False,
+        "pref_disable_polling": False,
+        "source": "user",
+        "title": "Mock Title",
+        "unique_id": "netatmo",
+        "version": 1,
+        "webhook_registered": False,
+    }
+
+    assert result["data"]["AsyncClimate-111111111111111111111401"] is None
+    assert (
+        result["data"]["AsyncClimate-91763b24c43d3e344f424e8b"]["repr"]
+        == "AsyncClimate(home_id=91763b24c43d3e344f424e8b)"
+    )