diff --git a/src/client/components/charts/UptimeBar.tsx b/src/client/components/charts/UptimeBar.tsx
index d18eee0..8a60cd8 100644
--- a/src/client/components/charts/UptimeBar.tsx
+++ b/src/client/components/charts/UptimeBar.tsx
@@ -1,33 +1,81 @@
-import { useState } from 'react';
+import { useState, type ComponentProps } from 'react';
 import { Bar, BarChart, Cell, XAxis, YAxis } from 'recharts';
 import { ChartContainer, ChartTooltip, ChartTooltipContent, type ChartConfig } from '@/components/ui/chart';
 import { Empty, EmptyDescription, EmptyTitle } from '@/components/ui/empty';
 import type { Check } from '../../api/monitors';
 
 type UptimeDatum = {
-	t: string;
+	startTime: string;
+	endTime: string;
 	v: number;
 	ok: boolean;
-	id: number;
+	id: string;
+	successfulChecks: number;
+	totalChecks: number;
 	status: 'up' | 'down';
 	fill: string;
 };
 
+const MAX_VISIBLE_SEGMENTS = 32;
+
 const uptimeConfig = {
 	up: { label: 'Up', color: 'var(--primary)' },
 	down: { label: 'Down', color: 'var(--chart-down)' },
 } satisfies ChartConfig;
 
+function formatBucketTime(point: UptimeDatum) {
+	const start = new Date(point.startTime);
+	const end = new Date(point.endTime);
+	if (point.totalChecks === 1) return end.toLocaleString();
+
+	return new Intl.DateTimeFormat('en', { dateStyle: 'medium', timeStyle: 'short' }).formatRange(start, end);
+}
+
+const formatUptimeTooltip: NonNullable<ComponentProps<typeof ChartTooltipContent>['formatter']> = (_, __, item) => {
+	const point = item.payload as UptimeDatum;
+	return (
+		<div className="flex w-full items-center justify-between gap-5">
+			<span className="text-[#777]">Successful</span>
+			<span className="font-mono font-medium tabular-nums text-[#171717]">
+				{point.successfulChecks}/{point.totalChecks}
+			</span>
+		</div>
+	);
+};
+
+function groupChecks(checks: Check[]): UptimeDatum[] {
+	const chronologicalChecks = checks.toReversed();
+	const bucketCount = Math.min(chronologicalChecks.length, MAX_VISIBLE_SEGMENTS);
+	const buckets = Array.from({ length: bucketCount }, () => [] as Check[]);
+
+	chronologicalChecks.forEach((check, index) => {
+		const bucketIndex = Math.min(bucketCount - 1, Math.floor((index * bucketCount) / chronologicalChecks.length));
+		buckets[bucketIndex].push(check);
+	});
+
+	return buckets.map((bucket) => {
+		const first = bucket[0];
+		const last = bucket[bucket.length - 1];
+		const successfulChecks = bucket.filter((check) => check.ok).length;
+		const ok = successfulChecks === bucket.length;
+
+		return {
+			startTime: first.checkedAt,
+			endTime: last.checkedAt,
+			v: 1,
+			ok,
+			id: `${first.id}-${last.id}`,
+			successfulChecks,
+			totalChecks: bucket.length,
+			status: ok ? 'up' : 'down',
+			fill: ok ? 'var(--color-up)' : 'var(--color-down)',
+		};
+	});
+}
+
 export function UptimeBar({ checks }: { checks: Check[] }) {
 	const [hasAnimated, setHasAnimated] = useState(false);
-	const data: UptimeDatum[] = checks.toReversed().map((check) => ({
-		t: check.checkedAt,
-		v: 1,
-		ok: check.ok,
-		id: check.id,
-		status: check.ok ? 'up' : 'down',
-		fill: check.ok ? 'var(--color-up)' : 'var(--color-down)',
-	}));
+	const data = groupChecks(checks);
 
 	if (data.length === 0)
 		return (
@@ -37,12 +85,12 @@ export function UptimeBar({ checks }: { checks: Check[] }) {
 			</Empty>
 		);
 
-	const successfulChecks = data.filter((check) => check.ok).length;
+	const successfulChecks = checks.filter((check) => check.ok).length;
 	return (
 		<div>
-			<div className="uptime-bar" role="img" aria-label={`${successfulChecks} of ${data.length} recent checks succeeded`}>
+			<div className="uptime-bar" role="img" aria-label={`${successfulChecks} of ${checks.length} recent checks succeeded`}>
 				<ChartContainer config={uptimeConfig} className="h-full w-full">
-					<BarChart data={data} barCategoryGap={2} margin={{ top: 10, right: 0, bottom: 0, left: 0 }}>
+					<BarChart data={data} barCategoryGap="24%" margin={{ top: 6, right: 0, bottom: 0, left: 0 }}>
 						<XAxis dataKey="id" hide />
 						<YAxis hide domain={[0, 1]} />
 						<ChartTooltip
@@ -51,14 +99,15 @@ export function UptimeBar({ checks }: { checks: Check[] }) {
 									className="min-w-36 gap-1.5 rounded-[6px] border-(--hairline) bg-white/97 px-3 py-2.5 shadow-[0_8px_24px_rgb(24_74_52/0.1),0_2px_6px_rgb(0_0_0/0.04)] backdrop-blur-sm"
 									hideIndicator={false}
 									nameKey="status"
-									labelFormatter={(_, payload) => new Date((payload[0].payload as UptimeDatum).t).toLocaleString()}
+									labelFormatter={(_, payload) => formatBucketTime(payload[0].payload as UptimeDatum)}
+									formatter={formatUptimeTooltip}
 								/>
 							}
 							isAnimationActive={false}
 						/>
 						<Bar
 							dataKey="v"
-							radius={[2, 2, 0, 0]}
+							radius={[3, 3, 1, 1]}
 							isAnimationActive={!hasAnimated}
 							animationDuration={700}
 							animationEasing="ease-out"
diff --git a/src/client/styles.css b/src/client/styles.css
index bf55526..7dae8bd 100644
--- a/src/client/styles.css
+++ b/src/client/styles.css
@@ -1154,8 +1154,9 @@ button {
 	min-height: 330px;
 }
 .uptime-bar {
-	height: 132px;
-	padding: 28px 22px 14px;
+	height: 148px;
+	padding: 24px 22px 18px;
+	background: linear-gradient(180deg, #fcfefd 0%, #fff 100%);
 }
 .uptime-legend {
 	display: flex;