diff --git a/reportsizedeltas/reportsizedeltas.py b/reportsizedeltas/reportsizedeltas.py
index b9be40c..378e4c4 100644
--- a/reportsizedeltas/reportsizedeltas.py
+++ b/reportsizedeltas/reportsizedeltas.py
@@ -85,6 +85,7 @@ class ReportKeys:
         maximum = "maximum"
         sketches = "sketches"
         compilation_success = "compilation_success"
+        warnings = "warnings"
 
     def __init__(self, repository_name: str, sketches_reports_source: str, token: str) -> None:
         self.repository_name = repository_name
@@ -414,7 +415,9 @@ def add_summary_report_row(self, report_data, fqbn_data) -> None:
         # Populate the row with data
         for size_data in fqbn_data[self.ReportKeys.sizes]:
             # Determine column number for this memory type
-            column_number = get_report_column_number(report=report_data, column_heading=size_data[self.ReportKeys.name])
+            column_number = get_report_column_number(
+                report=report_data, column_heading=size_data[self.ReportKeys.name], extra_column_heading="%"
+            )
 
             # Add the memory data to the cell
             if self.ReportKeys.delta in size_data:
@@ -441,6 +444,17 @@ def add_summary_report_row(self, report_data, fqbn_data) -> None:
                 report_data[row_number][column_number + 1] = self.get_summary_value(
                     show_emoji=False, minimum=self.not_applicable_indicator, maximum=self.not_applicable_indicator
                 )
+        if self.ReportKeys.warnings in fqbn_data:
+            column_number = get_report_column_number(
+                report=report_data, column_heading="Warnings<br>+/-", extra_column_heading=None
+            )
+            warnings_data = fqbn_data[self.ReportKeys.warnings]
+            deltas = warnings_data[self.ReportKeys.delta][self.ReportKeys.absolute]
+            report_data[row_number][column_number] = self.get_summary_value(
+                show_emoji=True,
+                minimum=deltas[self.ReportKeys.minimum],
+                maximum=deltas[self.ReportKeys.maximum],
+            )
 
     def add_detailed_report_row(self, report_data, fqbn_data) -> None:
         """Add a row to the detailed report.
@@ -466,6 +480,7 @@ def add_detailed_report_row(self, report_data, fqbn_data) -> None:
                             sketch_name=sketch[self.ReportKeys.name], size_name=size_data[self.ReportKeys.name]
                         )
                     ),
+                    extra_column_heading="%",
                 )
 
                 # Add the memory data to the cell
@@ -484,6 +499,20 @@ def add_detailed_report_row(self, report_data, fqbn_data) -> None:
                     # Relative
                     report_data[row_number][column_number + 1] = self.not_applicable_indicator
 
+            if self.ReportKeys.warnings in sketch:
+                warnings_data = sketch[self.ReportKeys.warnings]
+                column_number = get_report_column_number(
+                    report=report_data,
+                    column_heading=(
+                        "`{sketch_name}`<br>Warnings<br>+/-".format(sketch_name=sketch[self.ReportKeys.name])
+                    ),
+                    extra_column_heading="Warnings<br>current",
+                )
+                report_data[row_number][column_number] = warnings_data[self.ReportKeys.delta][self.ReportKeys.absolute]
+                report_data[row_number][column_number + 1] = warnings_data[self.ReportKeys.current][
+                    self.ReportKeys.absolute
+                ]
+
     def get_summary_value(self, show_emoji: bool, minimum, maximum) -> str:
         """Return the Markdown formatted text for a memory change data cell in the report table.
 
@@ -740,14 +769,13 @@ def get_page_count(link_header: str | None) -> int:
     return page_count
 
 
-def get_report_column_number(report, column_heading: str) -> int:
+def get_report_column_number(report, column_heading: str, extra_column_heading: str | None) -> int:
     """Return the column number of the given heading.
 
     Keyword arguments:
     column_heading -- the text of the column heading. If it doesn't exist, a column will be created with this heading.
+    extra_column_heading -- if not None, an additional column with this header (needs not be unique) will be created.
     """
-    relative_column_heading = "%"
-
     try:
         column_number = report[0].index(column_heading, 1)
     except ValueError:
@@ -760,11 +788,12 @@ def get_report_column_number(report, column_heading: str) -> int:
         # Expand the size of the final row (the current row) to match the new number of columns
         report[len(report) - 1].append("")
 
-        # Relative column
-        # Add the heading
-        report[0].append(relative_column_heading)
-        # Expand the size of the final row (the current row) to match the new number of columns
-        report[len(report) - 1].append("")
+        if extra_column_heading is not None:
+            # Extra column
+            # Add the heading
+            report[0].append(extra_column_heading)
+            # Expand the size of the final row (the current row) to match the new number of columns
+            report[len(report) - 1].append("")
 
     return column_number
 
diff --git a/reportsizedeltas/tests/test_reportsizedeltas.py b/reportsizedeltas/tests/test_reportsizedeltas.py
index 4fe96cd..90a1d12 100644
--- a/reportsizedeltas/tests/test_reportsizedeltas.py
+++ b/reportsizedeltas/tests/test_reportsizedeltas.py
@@ -987,7 +987,9 @@ def test_get_page_count():
 )
 def test_get_report_column_number(report, column_heading, expected_column_number, expected_report):
     assert (
-        reportsizedeltas.get_report_column_number(report=report, column_heading=column_heading)
+        reportsizedeltas.get_report_column_number(
+            report=report, column_heading=column_heading, extra_column_heading="%"
+        )
         == expected_column_number
     )
     assert report == expected_report