diff --git a/backend/tests/integration/test_wireless_api.py b/backend/tests/integration/test_wireless_api.py
new file mode 100644
index 0000000..dd469bf
--- /dev/null
+++ b/backend/tests/integration/test_wireless_api.py
@@ -0,0 +1,155 @@
+"""
+Integration tests for the Wireless Issues API endpoints.
+
+Tests exercise:
+- GET /api/tenants/{tenant_id}/fleet/wireless-issues
+- GET /api/fleet/wireless-issues (super_admin)
+
+All tests run against real PostgreSQL+TimescaleDB.
+"""
+
+import uuid
+from datetime import datetime, timedelta, timezone
+
+import pytest
+from sqlalchemy import text
+
+pytestmark = pytest.mark.integration
+
+
+class TestWirelessIssues:
+    """Wireless issues endpoint."""
+
+    async def test_wireless_issues_empty(
+        self,
+        client,
+        auth_headers_factory,
+        admin_session,
+        create_test_tenant,
+    ):
+        """GET wireless issues with no wireless data returns 200 + empty list."""
+        tenant = await create_test_tenant(admin_session)
+        auth = await auth_headers_factory(admin_session, existing_tenant_id=tenant.id)
+        tenant_id = auth["tenant_id"]
+
+        resp = await client.get(
+            f"/api/tenants/{tenant_id}/fleet/wireless-issues",
+            headers=auth["headers"],
+        )
+        assert resp.status_code == 200
+        assert isinstance(resp.json(), list)
+        assert len(resp.json()) == 0
+
+    async def test_wireless_issues_with_bad_signal(
+        self,
+        client,
+        auth_headers_factory,
+        admin_session,
+        create_test_device,
+        create_test_tenant,
+    ):
+        """GET wireless issues returns APs with signal worse than -70."""
+        tenant = await create_test_tenant(admin_session)
+        auth = await auth_headers_factory(admin_session, existing_tenant_id=tenant.id)
+        tenant_id = auth["tenant_id"]
+        device = await create_test_device(admin_session, tenant.id, hostname="bad-signal-ap")
+        await admin_session.flush()
+
+        now = datetime.now(timezone.utc)
+        await admin_session.execute(
+            text(
+                "INSERT INTO wireless_metrics "
+                "(device_id, tenant_id, time, interface, client_count, avg_signal, ccq, frequency) "
+                "VALUES (:device_id, :tenant_id, :ts, :iface, :clients, :signal, :ccq, :freq)"
+            ),
+            {
+                "device_id": str(device.id),
+                "tenant_id": str(tenant.id),
+                "ts": now,
+                "iface": "wlan1",
+                "clients": 5,
+                "signal": -82,
+                "ccq": 45,
+                "freq": 5180,
+            },
+        )
+        await admin_session.commit()
+
+        resp = await client.get(
+            f"/api/tenants/{tenant_id}/fleet/wireless-issues",
+            headers=auth["headers"],
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data) >= 1
+        assert data[0]["hostname"] == "bad-signal-ap"
+        assert "Signal" in data[0]["issue"]
+
+    async def test_wireless_issues_healthy_ap_excluded(
+        self,
+        client,
+        auth_headers_factory,
+        admin_session,
+        create_test_device,
+        create_test_tenant,
+    ):
+        """GET wireless issues excludes APs with good signal and CCQ."""
+        tenant = await create_test_tenant(admin_session)
+        auth = await auth_headers_factory(admin_session, existing_tenant_id=tenant.id)
+        tenant_id = auth["tenant_id"]
+        device = await create_test_device(admin_session, tenant.id, hostname="healthy-ap")
+        await admin_session.flush()
+
+        now = datetime.now(timezone.utc)
+        await admin_session.execute(
+            text(
+                "INSERT INTO wireless_metrics "
+                "(device_id, tenant_id, time, interface, client_count, avg_signal, ccq, frequency) "
+                "VALUES (:device_id, :tenant_id, :ts, :iface, :clients, :signal, :ccq, :freq)"
+            ),
+            {
+                "device_id": str(device.id),
+                "tenant_id": str(tenant.id),
+                "ts": now,
+                "iface": "wlan1",
+                "clients": 15,
+                "signal": -45,
+                "ccq": 92,
+                "freq": 2412,
+            },
+        )
+        await admin_session.commit()
+
+        resp = await client.get(
+            f"/api/tenants/{tenant_id}/fleet/wireless-issues",
+            headers=auth["headers"],
+        )
+        assert resp.status_code == 200
+        data = resp.json()
+        assert len(data) == 0
+
+    async def test_wireless_issues_unauthenticated(self, client):
+        """GET wireless issues without auth returns 401."""
+        tenant_id = str(uuid.uuid4())
+        resp = await client.get(f"/api/tenants/{tenant_id}/fleet/wireless-issues")
+        assert resp.status_code == 401
+
+
+class TestFleetWirelessIssues:
+    """Fleet-wide wireless issues (super_admin)."""
+
+    async def test_fleet_wireless_issues_super_admin(
+        self,
+        client,
+        auth_headers_factory,
+        admin_session,
+    ):
+        """GET /api/fleet/wireless-issues returns 200 for super_admin."""
+        auth = await auth_headers_factory(admin_session, role="super_admin")
+
+        resp = await client.get(
+            "/api/fleet/wireless-issues",
+            headers=auth["headers"],
+        )
+        assert resp.status_code == 200
+        assert isinstance(resp.json(), list)