diff --git a/homeassistant/components/openuv/__init__.py b/homeassistant/components/openuv/__init__.py
index c4a9d347a40..3e65f33d8c5 100644
--- a/homeassistant/components/openuv/__init__.py
+++ b/homeassistant/components/openuv/__init__.py
@@ -31,7 +31,7 @@ from .const import (
     DOMAIN,
     LOGGER,
 )
-from .coordinator import OpenUvCoordinator
+from .coordinator import InvalidApiKeyMonitor, OpenUvCoordinator
 
 PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
 
@@ -53,6 +53,8 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         high = entry.options.get(CONF_TO_WINDOW, DEFAULT_TO_WINDOW)
         return await client.uv_protection_window(low=low, high=high)
 
+    invalid_api_key_monitor = InvalidApiKeyMonitor(hass, entry)
+
     coordinators: dict[str, OpenUvCoordinator] = {
         coordinator_name: OpenUvCoordinator(
             hass,
@@ -60,6 +62,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
             latitude=client.latitude,
             longitude=client.longitude,
             update_method=update_method,
+            invalid_api_key_monitor=invalid_api_key_monitor,
         )
         for coordinator_name, update_method in (
             (DATA_UV, client.uv_index),
diff --git a/homeassistant/components/openuv/config_flow.py b/homeassistant/components/openuv/config_flow.py
index facbc37986e..2e96ce7c292 100644
--- a/homeassistant/components/openuv/config_flow.py
+++ b/homeassistant/components/openuv/config_flow.py
@@ -1,6 +1,8 @@
 """Config flow to configure the OpenUV component."""
 from __future__ import annotations
 
+from collections.abc import Mapping
+from dataclasses import dataclass
 from typing import Any
 
 from pyopenuv import Client
@@ -27,14 +29,39 @@ from .const import (
     DOMAIN,
 )
 
+STEP_REAUTH_SCHEMA = vol.Schema(
+    {
+        vol.Required(CONF_API_KEY): str,
+    }
+)
+
+
+@dataclass
+class OpenUvData:
+    """Define structured OpenUV data needed to create/re-auth an entry."""
+
+    api_key: str
+    latitude: float
+    longitude: float
+    elevation: float
+
+    @property
+    def unique_id(self) -> str:
+        """Return the unique for this data."""
+        return f"{self.latitude}, {self.longitude}"
+
 
 class OpenUvFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
     """Handle an OpenUV config flow."""
 
     VERSION = 2
 
+    def __init__(self) -> None:
+        """Initialize."""
+        self._reauth_data: Mapping[str, Any] = {}
+
     @property
-    def config_schema(self) -> vol.Schema:
+    def step_user_schema(self) -> vol.Schema:
         """Return the config schema."""
         return vol.Schema(
             {
@@ -51,13 +78,41 @@ class OpenUvFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
             }
         )
 
-    async def _show_form(self, errors: dict[str, Any] | None = None) -> FlowResult:
-        """Show the form to the user."""
-        return self.async_show_form(
-            step_id="user",
-            data_schema=self.config_schema,
-            errors=errors if errors else {},
-        )
+    async def _async_verify(
+        self, data: OpenUvData, error_step_id: str, error_schema: vol.Schema
+    ) -> FlowResult:
+        """Verify the credentials and create/re-auth the entry."""
+        websession = aiohttp_client.async_get_clientsession(self.hass)
+        client = Client(data.api_key, 0, 0, session=websession)
+        client.disable_request_retries()
+
+        try:
+            await client.uv_index()
+        except OpenUvError:
+            return self.async_show_form(
+                step_id=error_step_id,
+                data_schema=error_schema,
+                errors={CONF_API_KEY: "invalid_api_key"},
+                description_placeholders={
+                    CONF_LATITUDE: str(data.latitude),
+                    CONF_LONGITUDE: str(data.longitude),
+                },
+            )
+
+        entry_data = {
+            CONF_API_KEY: data.api_key,
+            CONF_LATITUDE: data.latitude,
+            CONF_LONGITUDE: data.longitude,
+            CONF_ELEVATION: data.elevation,
+        }
+
+        if existing_entry := await self.async_set_unique_id(data.unique_id):
+            self.hass.config_entries.async_update_entry(existing_entry, data=entry_data)
+            self.hass.async_create_task(
+                self.hass.config_entries.async_reload(existing_entry.entry_id)
+            )
+            return self.async_abort(reason="reauth_successful")
+        return self.async_create_entry(title=data.unique_id, data=entry_data)
 
     @staticmethod
     @callback
@@ -65,26 +120,54 @@ class OpenUvFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         """Define the config flow to handle options."""
         return OpenUvOptionsFlowHandler(config_entry)
 
+    async def async_step_reauth(self, entry_data: Mapping[str, Any]) -> FlowResult:
+        """Handle configuration by re-auth."""
+        self._reauth_data = entry_data
+        return await self.async_step_reauth_confirm()
+
+    async def async_step_reauth_confirm(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle re-auth completion."""
+        if not user_input:
+            return self.async_show_form(
+                step_id="reauth_confirm",
+                data_schema=STEP_REAUTH_SCHEMA,
+                description_placeholders={
+                    CONF_LATITUDE: self._reauth_data[CONF_LATITUDE],
+                    CONF_LONGITUDE: self._reauth_data[CONF_LONGITUDE],
+                },
+            )
+
+        data = OpenUvData(
+            user_input[CONF_API_KEY],
+            self._reauth_data[CONF_LATITUDE],
+            self._reauth_data[CONF_LONGITUDE],
+            self._reauth_data[CONF_ELEVATION],
+        )
+
+        return await self._async_verify(data, "reauth_confirm", STEP_REAUTH_SCHEMA)
+
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
     ) -> FlowResult:
         """Handle the start of the config flow."""
         if not user_input:
-            return await self._show_form()
+            return self.async_show_form(
+                step_id="user", data_schema=self.step_user_schema
+            )
 
-        identifier = f"{user_input[CONF_LATITUDE]}, {user_input[CONF_LONGITUDE]}"
-        await self.async_set_unique_id(identifier)
+        data = OpenUvData(
+            user_input[CONF_API_KEY],
+            user_input[CONF_LATITUDE],
+            user_input[CONF_LONGITUDE],
+            user_input[CONF_ELEVATION],
+        )
+
+        await self.async_set_unique_id(data.unique_id)
         self._abort_if_unique_id_configured()
 
-        websession = aiohttp_client.async_get_clientsession(self.hass)
-        client = Client(user_input[CONF_API_KEY], 0, 0, session=websession)
-
-        try:
-            await client.uv_index()
-        except OpenUvError:
-            return await self._show_form({CONF_API_KEY: "invalid_api_key"})
-
-        return self.async_create_entry(title=identifier, data=user_input)
+        return await self._async_verify(data, "user", self.step_user_schema)
 
 
 class OpenUvOptionsFlowHandler(config_entries.OptionsFlow):
diff --git a/homeassistant/components/openuv/coordinator.py b/homeassistant/components/openuv/coordinator.py
index 993970658ef..36267972f80 100644
--- a/homeassistant/components/openuv/coordinator.py
+++ b/homeassistant/components/openuv/coordinator.py
@@ -1,23 +1,94 @@
 """Define an update coordinator for OpenUV."""
 from __future__ import annotations
 
+import asyncio
 from collections.abc import Awaitable, Callable
 from typing import Any, cast
 
-from pyopenuv.errors import OpenUvError
+from pyopenuv.errors import InvalidApiKeyError, OpenUvError
 
-from homeassistant.core import HomeAssistant
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.data_entry_flow import FlowResult
 from homeassistant.helpers.debounce import Debouncer
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
-from .const import LOGGER
+from .const import DOMAIN, LOGGER
 
 DEFAULT_DEBOUNCER_COOLDOWN_SECONDS = 15 * 60
 
 
+class InvalidApiKeyMonitor:
+    """Define a monitor for failed API calls (due to bad keys) across coordinators."""
+
+    DEFAULT_FAILED_API_CALL_THRESHOLD = 5
+
+    def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
+        """Initialize."""
+        self._count = 1
+        self._lock = asyncio.Lock()
+        self._reauth_flow_manager = ReauthFlowManager(hass, entry)
+        self.entry = entry
+
+    async def async_increment(self) -> None:
+        """Increment the counter."""
+        LOGGER.debug("Invalid API key response detected (number %s)", self._count)
+        async with self._lock:
+            self._count += 1
+            if self._count > self.DEFAULT_FAILED_API_CALL_THRESHOLD:
+                self._reauth_flow_manager.start_reauth()
+
+    async def async_reset(self) -> None:
+        """Reset the counter."""
+        async with self._lock:
+            self._count = 0
+            self._reauth_flow_manager.cancel_reauth()
+
+
+class ReauthFlowManager:
+    """Define an OpenUV reauth flow manager."""
+
+    def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
+        """Initialize."""
+        self.entry = entry
+        self.hass = hass
+
+    @callback
+    def _get_active_reauth_flow(self) -> FlowResult | None:
+        """Get an active reauth flow (if it exists)."""
+        try:
+            [reauth_flow] = [
+                flow
+                for flow in self.hass.config_entries.flow.async_progress_by_handler(
+                    DOMAIN
+                )
+                if flow["context"]["source"] == "reauth"
+                and flow["context"]["entry_id"] == self.entry.entry_id
+            ]
+        except ValueError:
+            return None
+
+        return reauth_flow
+
+    @callback
+    def cancel_reauth(self) -> None:
+        """Cancel a reauth flow (if appropriate)."""
+        if reauth_flow := self._get_active_reauth_flow():
+            LOGGER.debug("API seems to have recovered; canceling reauth flow")
+            self.hass.config_entries.flow.async_abort(reauth_flow["flow_id"])
+
+    @callback
+    def start_reauth(self) -> None:
+        """Start a reauth flow (if appropriate)."""
+        if not self._get_active_reauth_flow():
+            LOGGER.debug("Multiple API failures in a row; starting reauth flow")
+            self.entry.async_start_reauth(self.hass)
+
+
 class OpenUvCoordinator(DataUpdateCoordinator):
     """Define an OpenUV data coordinator."""
 
+    config_entry: ConfigEntry
     update_method: Callable[[], Awaitable[dict[str, Any]]]
 
     def __init__(
@@ -28,6 +99,7 @@ class OpenUvCoordinator(DataUpdateCoordinator):
         latitude: str,
         longitude: str,
         update_method: Callable[[], Awaitable[dict[str, Any]]],
+        invalid_api_key_monitor: InvalidApiKeyMonitor,
     ) -> None:
         """Initialize."""
         super().__init__(
@@ -43,6 +115,7 @@ class OpenUvCoordinator(DataUpdateCoordinator):
             ),
         )
 
+        self._invalid_api_key_monitor = invalid_api_key_monitor
         self.latitude = latitude
         self.longitude = longitude
 
@@ -50,6 +123,10 @@ class OpenUvCoordinator(DataUpdateCoordinator):
         """Fetch data from OpenUV."""
         try:
             data = await self.update_method()
+        except InvalidApiKeyError:
+            await self._invalid_api_key_monitor.async_increment()
         except OpenUvError as err:
             raise UpdateFailed(f"Error during protection data update: {err}") from err
+
+        await self._invalid_api_key_monitor.async_reset()
         return cast(dict[str, Any], data["result"])
diff --git a/homeassistant/components/openuv/strings.json b/homeassistant/components/openuv/strings.json
index 84a093280f3..9542cb8b1a7 100644
--- a/homeassistant/components/openuv/strings.json
+++ b/homeassistant/components/openuv/strings.json
@@ -1,6 +1,13 @@
 {
   "config": {
     "step": {
+      "reauth_confirm": {
+        "title": "[%key:common::config_flow::title::reauth%]",
+        "description": "Please re-enter the API key for {latitude}, {longitude}.",
+        "data": {
+          "api_key": "[%key:common::config_flow::data::api_key%]"
+        }
+      },
       "user": {
         "title": "Fill in your information",
         "data": {
@@ -15,7 +22,8 @@
       "invalid_api_key": "[%key:common::config_flow::error::invalid_api_key%]"
     },
     "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_location%]"
+      "already_configured": "[%key:common::config_flow::abort::already_configured_location%]",
+      "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]"
     }
   },
   "options": {
diff --git a/homeassistant/components/openuv/translations/en.json b/homeassistant/components/openuv/translations/en.json
index 3879a4d7d44..9db83868543 100644
--- a/homeassistant/components/openuv/translations/en.json
+++ b/homeassistant/components/openuv/translations/en.json
@@ -1,12 +1,20 @@
 {
     "config": {
         "abort": {
-            "already_configured": "Location is already configured"
+            "already_configured": "Location is already configured",
+            "reauth_successful": "Re-authentication was successful"
         },
         "error": {
             "invalid_api_key": "Invalid API key"
         },
         "step": {
+            "reauth_confirm": {
+                "data": {
+                    "api_key": "API Key"
+                },
+                "description": "Please re-enter the API key for {latitude}, {longitude}.",
+                "title": "Reauthenticate Integration"
+            },
             "user": {
                 "data": {
                     "api_key": "API Key",
diff --git a/tests/components/openuv/test_config_flow.py b/tests/components/openuv/test_config_flow.py
index 9f51728365b..eeafd82a20f 100644
--- a/tests/components/openuv/test_config_flow.py
+++ b/tests/components/openuv/test_config_flow.py
@@ -5,7 +5,7 @@ from pyopenuv.errors import InvalidApiKeyError
 
 from homeassistant import data_entry_flow
 from homeassistant.components.openuv import CONF_FROM_WINDOW, CONF_TO_WINDOW, DOMAIN
-from homeassistant.config_entries import SOURCE_USER
+from homeassistant.config_entries import SOURCE_REAUTH, SOURCE_USER
 from homeassistant.const import (
     CONF_API_KEY,
     CONF_ELEVATION,
@@ -51,6 +51,28 @@ async def test_options_flow(hass, config_entry):
         assert config_entry.options == {CONF_FROM_WINDOW: 3.5, CONF_TO_WINDOW: 2.0}
 
 
+async def test_step_reauth(hass, config, config_entry, setup_openuv):
+    """Test that the reauth step works."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": SOURCE_REAUTH}, data=config
+    )
+    assert result["step_id"] == "reauth_confirm"
+
+    result = await hass.config_entries.flow.async_configure(result["flow_id"])
+    assert result["type"] == data_entry_flow.FlowResultType.FORM
+    assert result["step_id"] == "reauth_confirm"
+
+    with patch("homeassistant.components.openuv.async_setup_entry", return_value=True):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"], user_input={CONF_API_KEY: "new_api_key"}
+        )
+        await hass.async_block_till_done()
+
+    assert result["type"] == data_entry_flow.FlowResultType.ABORT
+    assert result["reason"] == "reauth_successful"
+    assert len(hass.config_entries.async_entries()) == 1
+
+
 async def test_step_user(hass, config, setup_openuv):
     """Test that the user step works."""
     result = await hass.config_entries.flow.async_init(