diff --git a/lib/pages/analytics/services/range_of_aqi/fake_range_of_aqi_service.dart b/lib/pages/analytics/services/range_of_aqi/fake_range_of_aqi_service.dart
new file mode 100644
index 00000000..7e50e6aa
--- /dev/null
+++ b/lib/pages/analytics/services/range_of_aqi/fake_range_of_aqi_service.dart
@@ -0,0 +1,16 @@
+import 'package:syncrow_web/pages/analytics/models/range_of_aqi.dart';
+import 'package:syncrow_web/pages/analytics/params/get_range_of_aqi_param.dart';
+import 'package:syncrow_web/pages/analytics/services/range_of_aqi/range_of_aqi_service.dart';
+
+class FakeRangeOfAqiService implements RangeOfAqiService {
+  @override
+  Future<List<RangeOfAqi>> load(GetRangeOfAqiParam param) async {
+    return List.generate(30, (index) {
+      final date = param.date.add(Duration(days: index));
+      final min = (index * 2).toDouble();
+      final avg = min + 10;
+      final max = avg + 10;
+      return RangeOfAqi(min: min, avg: avg, max: max, date: date);
+    });
+  }
+}
diff --git a/lib/pages/analytics/services/range_of_aqi/range_of_aqi_service.dart b/lib/pages/analytics/services/range_of_aqi/range_of_aqi_service.dart
new file mode 100644
index 00000000..9e1657e3
--- /dev/null
+++ b/lib/pages/analytics/services/range_of_aqi/range_of_aqi_service.dart
@@ -0,0 +1,6 @@
+import 'package:syncrow_web/pages/analytics/models/range_of_aqi.dart';
+import 'package:syncrow_web/pages/analytics/params/get_range_of_aqi_param.dart';
+
+abstract interface class RangeOfAqiService {
+  Future<List<RangeOfAqi>> load(GetRangeOfAqiParam param);
+}
\ No newline at end of file