diff --git a/static/app/components/charts/baseChart.tsx b/static/app/components/charts/baseChart.tsx
index b39db877acde4d..014c422559e912 100644
--- a/static/app/components/charts/baseChart.tsx
+++ b/static/app/components/charts/baseChart.tsx
@@ -69,6 +69,11 @@ type Props = {
    * be an array of ECharts "Series" components.
    */
   series?: EChartOption.Series[];
+  /**
+   * Additional Chart Series
+   * This is to pass series to BaseChart bypassing the wrappers like LineChart, AreaChart etc.
+   */
+  additionalSeries?: EChartOption.SeriesLine[];
   /**
    * Array of color codes to use in charts. May also take a function which is
    * provided with the current theme
@@ -112,6 +117,7 @@ type Props = {
         seriesParams?: EChartOption.Tooltip.Format
       ) => string | number;
       nameFormatter?: (name: string) => string;
+      markerFormatter?: (marker: string, label?: string) => string;
       /**
        * Array containing seriesNames that need to be indented
        */
@@ -283,6 +289,7 @@ function BaseChartUnwrapped({
 
   options = {},
   series = [],
+  additionalSeries = [],
   yAxis = {},
   xAxis = {},
 
@@ -337,8 +344,8 @@ function BaseChartUnwrapped({
     ) ?? [];
 
   const resolvedSeries = !previousPeriod
-    ? transformedSeries
-    : [...transformedSeries, ...transformedPreviousPeriod];
+    ? [...transformedSeries, ...additionalSeries]
+    : [...transformedSeries, ...transformedPreviousPeriod, ...additionalSeries];
 
   const defaultAxesProps = {theme};
 
diff --git a/static/app/components/charts/components/tooltip.tsx b/static/app/components/charts/components/tooltip.tsx
index af73e5dfaf770d..15ab6894d3f9e5 100644
--- a/static/app/components/charts/components/tooltip.tsx
+++ b/static/app/components/charts/components/tooltip.tsx
@@ -60,6 +60,10 @@ function defaultNameFormatter(value: string) {
   return value;
 }
 
+function defaultMarkerFormatter(value: string) {
+  return value;
+}
+
 function getSeriesValue(series: EChartOption.Tooltip.Format, offset: number) {
   if (!series.data) {
     return undefined;
@@ -81,7 +85,8 @@ type TooltipFormatters =
   | 'filter'
   | 'formatAxisLabel'
   | 'valueFormatter'
-  | 'nameFormatter';
+  | 'nameFormatter'
+  | 'markerFormatter';
 
 type FormatterOptions = Pick<NonNullable<ChartProps['tooltip']>, TooltipFormatters> &
   Pick<ChartProps, NeededChartProps> & {
@@ -105,6 +110,7 @@ function getFormatter({
   bucketSize,
   valueFormatter = defaultValueFormatter,
   nameFormatter = defaultNameFormatter,
+  markerFormatter = defaultMarkerFormatter,
   indentLabels = [],
   addSecondsToTimeFormat = false,
 }: FormatterOptions) {
@@ -203,11 +209,13 @@ function getFormatter({
           );
           const value = valueFormatter(getSeriesValue(s, 1), s.seriesName, s);
 
+          const marker = markerFormatter(s.marker ?? '', s.seriesName);
+
           const className = indentLabels.includes(formattedLabel)
             ? 'tooltip-label tooltip-label-indent'
             : 'tooltip-label';
 
-          return `<div><span class="${className}">${s.marker} <strong>${formattedLabel}</strong></span> ${value}</div>`;
+          return `<div><span class="${className}">${marker} <strong>${formattedLabel}</strong></span> ${value}</div>`;
         })
         .join(''),
       '</div>',
@@ -235,6 +243,7 @@ export default function Tooltip({
   formatAxisLabel,
   valueFormatter,
   nameFormatter,
+  markerFormatter,
   hideDelay,
   indentLabels,
   ...props
@@ -252,6 +261,7 @@ export default function Tooltip({
       formatAxisLabel,
       valueFormatter,
       nameFormatter,
+      markerFormatter,
       indentLabels,
     });
 
diff --git a/static/app/components/charts/eventsRequest.tsx b/static/app/components/charts/eventsRequest.tsx
index 8dfeff961818dc..42270cbaab1389 100644
--- a/static/app/components/charts/eventsRequest.tsx
+++ b/static/app/components/charts/eventsRequest.tsx
@@ -69,7 +69,7 @@ type DefaultProps = {
    */
   interval: string;
   /**
-   * Time delta for comparing intervals  alert metrics, value in minutes
+   * Time delta for comparing intervals of alert metrics, in seconds
    */
   comparisonDelta?: number;
   /**
diff --git a/static/app/views/alerts/incidentRules/triggers/chart/index.tsx b/static/app/views/alerts/incidentRules/triggers/chart/index.tsx
index 6cd8134bf8b5ac..93744e374a013d 100644
--- a/static/app/views/alerts/incidentRules/triggers/chart/index.tsx
+++ b/static/app/views/alerts/incidentRules/triggers/chart/index.tsx
@@ -1,5 +1,6 @@
 import * as React from 'react';
 import styled from '@emotion/styled';
+import capitalize from 'lodash/capitalize';
 import chunk from 'lodash/chunk';
 import maxBy from 'lodash/maxBy';
 import minBy from 'lodash/minBy';
@@ -31,6 +32,7 @@ import {
 } from 'app/utils/sessions';
 import theme from 'app/utils/theme';
 import withApi from 'app/utils/withApi';
+import {COMPARISON_DELTA_OPTIONS} from 'app/views/alerts/incidentRules/constants';
 import {isSessionAggregate, SESSION_AGGREGATE_TO_FIELD} from 'app/views/alerts/utils';
 import {AlertWizardAlertNames} from 'app/views/alerts/wizard/options';
 import {getAlertTypeFromAggregateDataset} from 'app/views/alerts/wizard/utils';
@@ -218,6 +220,13 @@ class TriggersChart extends React.PureComponent<Props, State> {
     return period;
   };
 
+  get comparisonSeriesName() {
+    return capitalize(
+      COMPARISON_DELTA_OPTIONS.find(({value}) => value === this.props.comparisonDelta)
+        ?.label || ''
+    );
+  }
+
   getComparisonMarkLines(
     timeseriesData: Series[] = [],
     comparisonTimeseriesData: Series[] = []
@@ -362,6 +371,7 @@ class TriggersChart extends React.PureComponent<Props, State> {
     timeseriesData: Series[] = [],
     isLoading: boolean,
     isReloading: boolean,
+    comparisonData?: Series[],
     comparisonMarkLines?: LineChartSeries[],
     minutesThresholdToDisplaySeconds?: number
   ) {
@@ -389,6 +399,8 @@ class TriggersChart extends React.PureComponent<Props, State> {
             minValue={minBy(timeseriesData[0]?.data, ({value}) => value)?.value}
             maxValue={maxBy(timeseriesData[0]?.data, ({value}) => value)?.value}
             data={timeseriesData}
+            comparisonData={comparisonData ?? []}
+            comparisonSeriesName={this.comparisonSeriesName}
             comparisonMarkLines={comparisonMarkLines ?? []}
             hideThresholdLines={comparisonType === AlertRuleComparisonType.CHANGE}
             triggers={triggers}
@@ -475,6 +487,7 @@ class TriggersChart extends React.PureComponent<Props, State> {
             loading,
             reloading,
             undefined,
+            undefined,
             MINUTES_THRESHOLD_TO_DISPLAY_SECONDS
           );
         }}
@@ -490,7 +503,7 @@ class TriggersChart extends React.PureComponent<Props, State> {
               environment={environment ? [environment] : undefined}
               project={projects.map(({id}) => Number(id))}
               interval={`${timeWindow}m`}
-              comparisonDelta={comparisonDelta}
+              comparisonDelta={comparisonDelta && comparisonDelta * 60}
               period={period}
               yAxis={aggregate}
               includePrevious={false}
@@ -544,6 +557,7 @@ class TriggersChart extends React.PureComponent<Props, State> {
                   timeseriesData,
                   loading,
                   reloading,
+                  comparisonTimeseriesData,
                   comparisonMarkLines
                 );
               }}
diff --git a/static/app/views/alerts/incidentRules/triggers/chart/thresholdsChart.tsx b/static/app/views/alerts/incidentRules/triggers/chart/thresholdsChart.tsx
index 7676ef48a5b1db..bb284eb5f22504 100644
--- a/static/app/views/alerts/incidentRules/triggers/chart/thresholdsChart.tsx
+++ b/static/app/views/alerts/incidentRules/triggers/chart/thresholdsChart.tsx
@@ -5,6 +5,8 @@ import flatten from 'lodash/flatten';
 
 import AreaChart, {AreaChartSeries} from 'app/components/charts/areaChart';
 import Graphic from 'app/components/charts/components/graphic';
+import {LineChartSeries} from 'app/components/charts/lineChart';
+import LineSeries from 'app/components/charts/series/lineSeries';
 import space from 'app/styles/space';
 import {GlobalSelection} from 'app/types';
 import {ReactEchartsRef, Series} from 'app/types/echarts';
@@ -21,7 +23,8 @@ import {AlertRuleThresholdType, IncidentRule, Trigger} from '../../types';
 
 type DefaultProps = {
   data: Series[];
-  comparisonMarkLines: AreaChartSeries[];
+  comparisonData: Series[];
+  comparisonMarkLines: LineChartSeries[];
 };
 
 type Props = DefaultProps & {
@@ -33,6 +36,7 @@ type Props = DefaultProps & {
   minutesThresholdToDisplaySeconds?: number;
   maxValue?: number;
   minValue?: number;
+  comparisonSeriesName?: string;
 } & Partial<GlobalSelection['datetime']>;
 
 type State = {
@@ -63,6 +67,7 @@ const COLOR = {
 export default class ThresholdsChart extends PureComponent<Props, State> {
   static defaultProps: DefaultProps = {
     data: [],
+    comparisonData: [],
     comparisonMarkLines: [],
   };
 
@@ -81,6 +86,7 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
     if (
       this.props.triggers !== prevProps.triggers ||
       this.props.data !== prevProps.data ||
+      this.props.comparisonData !== prevProps.comparisonData ||
       this.props.comparisonMarkLines !== prevProps.comparisonMarkLines
     ) {
       this.handleUpdateChartAxis();
@@ -295,6 +301,8 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
       triggers,
       period,
       aggregate,
+      comparisonData,
+      comparisonSeriesName,
       comparisonMarkLines,
       minutesThresholdToDisplaySeconds,
     } = this.props;
@@ -306,6 +314,13 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
       })
     );
 
+    const comparisonDataWithoutRecentBucket = comparisonData?.map(
+      ({data: eventData, ...restOfData}) => ({
+        ...restOfData,
+        data: eventData.slice(0, -1),
+      })
+    );
+
     // Disable all lines by default but the 1st one
     const selected: Record<string, boolean> = dataWithoutRecentBucket.reduce(
       (acc, {seriesName}, index) => {
@@ -323,8 +338,17 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
 
     const chartOptions = {
       tooltip: {
-        valueFormatter: (value: number, seriesName?: string) =>
-          alertTooltipValueFormatter(value, seriesName ?? '', aggregate),
+        // use the main aggregate for all series (main, min, max, avg, comparison)
+        // to format all values similarly
+        valueFormatter: (value: number) =>
+          alertTooltipValueFormatter(value, aggregate, aggregate),
+
+        markerFormatter: (marker: string, seriesName?: string) => {
+          if (seriesName === comparisonSeriesName) {
+            return '<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:transparent;"></span>';
+          }
+          return marker;
+        },
       },
       yAxis: {
         min: this.state.yAxisMin ?? undefined,
@@ -355,6 +379,19 @@ export default class ThresholdsChart extends PureComponent<Props, State> {
           ),
         })}
         series={[...dataWithoutRecentBucket, ...comparisonMarkLines]}
+        additionalSeries={[
+          ...comparisonDataWithoutRecentBucket.map(({data: _data, ...otherSeriesProps}) =>
+            LineSeries({
+              name: comparisonSeriesName,
+              data: _data.map(({name, value}) => [name, value]),
+              lineStyle: {color: theme.gray200, type: 'dashed', width: 1},
+              animation: false,
+              animationThreshold: 1,
+              animationDuration: 0,
+              ...otherSeriesProps,
+            })
+          ),
+        ]}
         onFinished={() => {
           // We want to do this whenever the chart finishes re-rendering so that we can update the dimensions of
           // any graphics related to the triggers (e.g. the threshold areas + boundaries)