diff --git a/src/Weatherstack/Errors/BulkQueriesNotSupported.cs b/src/Weatherstack/Errors/BulkQueriesNotSupported.cs
new file mode 100644
index 0000000..547d8c6
--- /dev/null
+++ b/src/Weatherstack/Errors/BulkQueriesNotSupported.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that bulk queries are not supported on the current subscription plan.
+    /// </summary>
+    public static ApiError BulkQueriesNotSupported => new()
+    {
+        Code = 604,
+        Type = "604_bulk_queries_not_supported_on_plan",
+        Information = "Bulk queries are not supported on the current subscription plan."
+    };
+}
diff --git a/src/Weatherstack/Errors/Forbidden.cs b/src/Weatherstack/Errors/Forbidden.cs
new file mode 100644
index 0000000..a496ceb
--- /dev/null
+++ b/src/Weatherstack/Errors/Forbidden.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Access is denied because the current subscription plan does not support the requested API function or HTTPS access.
+    /// </summary>
+    public static ApiError Forbidden => new()
+    {
+        Code = 403,
+        Type = "forbidden",
+        Information = "The user's current subscription plan does not support this API function / HTTPS."
+    };
+}
diff --git a/src/Weatherstack/Errors/ForecastDaysNotSupported.cs b/src/Weatherstack/Errors/ForecastDaysNotSupported.cs
new file mode 100644
index 0000000..4df6b08
--- /dev/null
+++ b/src/Weatherstack/Errors/ForecastDaysNotSupported.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that weather forecast data is not supported on the current subscription plan.
+    /// </summary>
+    public static ApiError ForecastDaysNotSupported => new()
+    {
+        Code = 609,
+        Type = "609_forecast_days_not_supported_on_plan",
+        Information = "Weather forecast data is not supported on the current subscription plan."
+    };
+}
diff --git a/src/Weatherstack/Errors/HistoricalQueriesNotSupported.cs b/src/Weatherstack/Errors/HistoricalQueriesNotSupported.cs
new file mode 100644
index 0000000..a086cd9
--- /dev/null
+++ b/src/Weatherstack/Errors/HistoricalQueriesNotSupported.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that historical data is not supported on the current subscription plan.
+    /// </summary>
+    public static ApiError HistoricalQueriesNotSupported => new()
+    {
+        Code = 603,
+        Type = "603_historical_queries_not_supported_on_plan",
+        Information = "Historical data is not supported on the current subscription plan."
+    };
+}
diff --git a/src/Weatherstack/Errors/HistoricalTimeFrameTooLong.cs b/src/Weatherstack/Errors/HistoricalTimeFrameTooLong.cs
new file mode 100644
index 0000000..2cfffd1
--- /dev/null
+++ b/src/Weatherstack/Errors/HistoricalTimeFrameTooLong.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified historical time frame exceeds the maximum allowed limit of 60 days.
+    /// </summary>
+    public static ApiError HistoricalTimeFrameTooLong => new()
+    {
+        Code = 613,
+        Type = "613_historical_time_frame_too_long",
+        Information = "The specified historical time frame is too long. (Maximum: 60 days)"
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidForecastDays.cs b/src/Weatherstack/Errors/InvalidForecastDays.cs
new file mode 100644
index 0000000..22bf259
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidForecastDays.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that an invalid value was specified for the number of forecast days.
+    /// </summary>
+    public static ApiError InvalidForecastDays => new()
+    {
+        Code = 608,
+        Type = "608_invalid_forecast_days",
+        Information = "An invalid forecast days value was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidHistoricalDate.cs b/src/Weatherstack/Errors/InvalidHistoricalDate.cs
new file mode 100644
index 0000000..2cb83da
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidHistoricalDate.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified historical date is invalid.
+    /// </summary>
+    public static ApiError InvalidHistoricalDate => new()
+    {
+        Code = 611,
+        Type = "611_invalid_historical_date",
+        Information = "An invalid historical date was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidHistoricalTimeFrame.cs b/src/Weatherstack/Errors/InvalidHistoricalTimeFrame.cs
new file mode 100644
index 0000000..8c239a8
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidHistoricalTimeFrame.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified historical time frame is invalid.
+    /// </summary>
+    public static ApiError InvalidHistoricalTimeFrame => new()
+    {
+        Code = 612,
+        Type = "612_invalid_historical_time_frame",
+        Information = "An invalid historical time frame was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidInterval.cs b/src/Weatherstack/Errors/InvalidInterval.cs
new file mode 100644
index 0000000..b173a9e
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidInterval.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified interval value is invalid
+    /// </summary>
+    public static ApiError InvalidInterval => new()
+    {
+        Code = 607,
+        Type = "607_invalid_interval",
+        Information = "An invalid interval value was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidLanguage.cs b/src/Weatherstack/Errors/InvalidLanguage.cs
new file mode 100644
index 0000000..2503f1d
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidLanguage.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified language code is invalid.
+    /// </summary>
+    public static ApiError InvalidLanguage => new()
+    {
+        Code = 605,
+        Type = "605_invalid_language",
+        Information = "An invalid language code was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/InvalidUnit.cs b/src/Weatherstack/Errors/InvalidUnit.cs
new file mode 100644
index 0000000..ed1b174
--- /dev/null
+++ b/src/Weatherstack/Errors/InvalidUnit.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the specified unit value is invalid.
+    /// </summary>
+    public static ApiError InvalidUnit => new()
+    {
+        Code = 606,
+        Type = "606_invalid_unit",
+        Information = "An invalid unit value was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/MissingHistoricalDate.cs b/src/Weatherstack/Errors/MissingHistoricalDate.cs
new file mode 100644
index 0000000..1ed6744
--- /dev/null
+++ b/src/Weatherstack/Errors/MissingHistoricalDate.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that a historical date is missing.
+    /// </summary>
+    public static ApiError MissingHistoricalDate => new()
+    {
+        Code = 614,
+        Type = "614_missing_historical_date",
+        Information = "An invalid historical date was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/MissingQuery.cs b/src/Weatherstack/Errors/MissingQuery.cs
new file mode 100644
index 0000000..6c6c168
--- /dev/null
+++ b/src/Weatherstack/Errors/MissingQuery.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that a required query value is missing.
+    /// </summary>
+    public static ApiError MissingQuery => new()
+    {
+        Code = 601,
+        Type = "601_missing_query",
+        Information = "An invalid (or missing) query value was specified."
+    };
+}
diff --git a/src/Weatherstack/Errors/RequestFailed.cs b/src/Weatherstack/Errors/RequestFailed.cs
new file mode 100644
index 0000000..3e886d6
--- /dev/null
+++ b/src/Weatherstack/Errors/RequestFailed.cs
@@ -0,0 +1,23 @@
+// Copyright (c) 2024 tacosontitan
+// This file is part of the Weatherstack project, which is distributed under the MIT license.
+// See LICENSE for more information.
+
+/*
+    The folder containing this file is not intended to be a part of the
+    namespace, it is purely for organizational purposes.
+*/
+
+namespace Weatherstack.Errors;
+
+public static partial class Errors
+{
+    /// <summary>
+    /// Indicates that the API request has failed.
+    /// </summary>
+    public static ApiError RequestFailed => new()
+    {
+        Code = 615,
+        Type = "615_request_failed",
+        Information = "API request has failed."
+    };
+}