diff --git a/homeassistant/components/airnow/const.py b/homeassistant/components/airnow/const.py
index 1f468bf0cf7..054a5cbfea7 100644
--- a/homeassistant/components/airnow/const.py
+++ b/homeassistant/components/airnow/const.py
@@ -14,6 +14,7 @@ ATTR_API_POLLUTANT = "Pollutant"
 ATTR_API_REPORT_DATE = "DateObserved"
 ATTR_API_REPORT_HOUR = "HourObserved"
 ATTR_API_REPORT_TZ = "LocalTimeZone"
+ATTR_API_REPORT_TZINFO = "LocalTimeZoneInfo"
 ATTR_API_STATE = "StateCode"
 ATTR_API_STATION = "ReportingArea"
 ATTR_API_STATION_LATITUDE = "Latitude"
diff --git a/homeassistant/components/airnow/coordinator.py b/homeassistant/components/airnow/coordinator.py
index 32185080d25..35f8a0e0abf 100644
--- a/homeassistant/components/airnow/coordinator.py
+++ b/homeassistant/components/airnow/coordinator.py
@@ -12,6 +12,7 @@ from pyairnow.errors import AirNowError
 
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+from homeassistant.util import dt as dt_util
 
 from .const import (
     ATTR_API_AQI,
@@ -26,6 +27,7 @@ from .const import (
     ATTR_API_REPORT_DATE,
     ATTR_API_REPORT_HOUR,
     ATTR_API_REPORT_TZ,
+    ATTR_API_REPORT_TZINFO,
     ATTR_API_STATE,
     ATTR_API_STATION,
     ATTR_API_STATION_LATITUDE,
@@ -96,7 +98,9 @@ class AirNowDataUpdateCoordinator(DataUpdateCoordinator[dict[str, Any]]):
                 # Copy Report Details
                 data[ATTR_API_REPORT_DATE] = obv[ATTR_API_REPORT_DATE]
                 data[ATTR_API_REPORT_HOUR] = obv[ATTR_API_REPORT_HOUR]
-                data[ATTR_API_REPORT_TZ] = obv[ATTR_API_REPORT_TZ]
+                data[ATTR_API_REPORT_TZINFO] = await dt_util.async_get_time_zone(
+                    obv[ATTR_API_REPORT_TZ]
+                )
 
                 # Copy Station Details
                 data[ATTR_API_STATE] = obv[ATTR_API_STATE]
diff --git a/homeassistant/components/airnow/sensor.py b/homeassistant/components/airnow/sensor.py
index f98a984658d..722c0d6f4a9 100644
--- a/homeassistant/components/airnow/sensor.py
+++ b/homeassistant/components/airnow/sensor.py
@@ -23,7 +23,6 @@ from homeassistant.helpers.device_registry import DeviceEntryType, DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
-from homeassistant.util.dt import get_time_zone
 
 from . import AirNowConfigEntry, AirNowDataUpdateCoordinator
 from .const import (
@@ -35,7 +34,7 @@ from .const import (
     ATTR_API_PM25,
     ATTR_API_REPORT_DATE,
     ATTR_API_REPORT_HOUR,
-    ATTR_API_REPORT_TZ,
+    ATTR_API_REPORT_TZINFO,
     ATTR_API_STATION,
     ATTR_API_STATION_LATITUDE,
     ATTR_API_STATION_LONGITUDE,
@@ -84,7 +83,7 @@ SENSOR_TYPES: tuple[AirNowEntityDescription, ...] = (
                 f"{data[ATTR_API_REPORT_DATE]} {data[ATTR_API_REPORT_HOUR]}",
                 "%Y-%m-%d %H",
             )
-            .replace(tzinfo=get_time_zone(data[ATTR_API_REPORT_TZ]))
+            .replace(tzinfo=data[ATTR_API_REPORT_TZINFO])
             .isoformat(),
         },
     ),
diff --git a/tests/components/airnow/snapshots/test_diagnostics.ambr b/tests/components/airnow/snapshots/test_diagnostics.ambr
index 71fda040c1d..c2004d759a9 100644
--- a/tests/components/airnow/snapshots/test_diagnostics.ambr
+++ b/tests/components/airnow/snapshots/test_diagnostics.ambr
@@ -8,7 +8,7 @@
       'DateObserved': '2020-12-20',
       'HourObserved': 15,
       'Latitude': '**REDACTED**',
-      'LocalTimeZone': 'PST',
+      'LocalTimeZoneInfo': 'PST',
       'Longitude': '**REDACTED**',
       'O3': 0.048,
       'PM10': 12,
diff --git a/tests/components/airnow/test_diagnostics.py b/tests/components/airnow/test_diagnostics.py
index a1348b49531..7329398e789 100644
--- a/tests/components/airnow/test_diagnostics.py
+++ b/tests/components/airnow/test_diagnostics.py
@@ -1,5 +1,7 @@
 """Test AirNow diagnostics."""
 
+from unittest.mock import patch
+
 import pytest
 from syrupy import SnapshotAssertion
 
@@ -18,8 +20,14 @@ async def test_entry_diagnostics(
     snapshot: SnapshotAssertion,
 ) -> None:
     """Test config entry diagnostics."""
-    assert await hass.config_entries.async_setup(config_entry.entry_id)
-    assert (
-        await get_diagnostics_for_config_entry(hass, hass_client, config_entry)
-        == snapshot
-    )
+
+    # Fake LocalTimeZoneInfo
+    with patch(
+        "homeassistant.util.dt.async_get_time_zone",
+        return_value="PST",
+    ):
+        assert await hass.config_entries.async_setup(config_entry.entry_id)
+        assert (
+            await get_diagnostics_for_config_entry(hass, hass_client, config_entry)
+            == snapshot
+        )