diff --git a/web/app/src/App.vue b/web/app/src/App.vue
index f6956b77..ef84c90d 100644
--- a/web/app/src/App.vue
+++ b/web/app/src/App.vue
@@ -1,7 +1,8 @@
 <template>
-  <Services :serviceStatuses="serviceStatuses" :maximumNumberOfResults="20" :showStatusOnHover="true" />
-  <Social />
-  <Settings @refreshStatuses="fetchStatuses" />
+  <Services :serviceStatuses="serviceStatuses" :showStatusOnHover="true" @showTooltip="showTooltip"/>
+  <Tooltip :result="tooltip.result" :event="tooltip.event"/>
+  <Social/>
+  <Settings @refreshStatuses="fetchStatuses"/>
 </template>
 
 
@@ -9,13 +10,15 @@
 import Social from './components/Social.vue'
 import Settings from './components/Settings.vue'
 import Services from './components/Services.vue';
+import Tooltip from './components/Tooltip.vue';
 
 export default {
   name: 'App',
   components: {
     Services,
     Social,
-    Settings
+    Settings,
+    Tooltip
   },
   methods: {
     fetchStatuses() {
@@ -28,11 +31,15 @@ export default {
               this.serviceStatuses = data;
             }
           });
+    },
+    showTooltip(result, event) {
+      this.tooltip = {result: result, event: event};
     }
   },
   data() {
     return {
-      serviceStatuses: {}
+      serviceStatuses: {},
+      tooltip: {}
     }
   },
   created() {
@@ -43,10 +50,11 @@ export default {
 
 
 <style>
-  html, body {
-    background-color: #f7f9fb;
-  }
-  html {
-    height: 100%;
-  }
+html, body {
+  background-color: #f7f9fb;
+}
+
+html, body {
+  height: 100%;
+}
 </style>
diff --git a/web/app/src/components/Service.vue b/web/app/src/components/Service.vue
index f7f1fc46..6036adb4 100644
--- a/web/app/src/components/Service.vue
+++ b/web/app/src/components/Service.vue
@@ -12,16 +12,17 @@
     </div>
     <div>
       <div class='status-over-time flex flex-row'>
-        <slot v-for="filler in 20 - data.results.length" :key="filler">
+        <slot v-for="filler in maximumNumberOfResults - data.results.length" :key="filler">
           <span class="status rounded border border-dashed"> </span>
         </slot>
         <slot v-for="result in data.results" :key="result">
-          <span v-if="result.success" class="status rounded bg-success">&#10003;</span>
-          <span v-else class="status rounded bg-red-600">X</span>
+          <span v-if="result.success" class="status rounded bg-success" @mouseenter="showTooltip(result, $event)" @mouseleave="showTooltip(null, $event)">&#10003;</span>
+          <span v-else class="status rounded bg-red-600" @mouseenter="showTooltip(result, $event)" @mouseleave="showTooltip(null, $event)">X</span>
         </slot>
       </div>
     </div>
     <div class='flex flex-wrap status-time-ago'>
+      <!-- Show "Last update at" instead? -->
       <div class='w-1/2'>
         {{ generatePrettyTimeAgo(data.results[0].timestamp) }}
       </div>
@@ -37,7 +38,8 @@
 export default {
   name: 'Service',
   props: {
-    data: Object
+    maximumNumberOfResults: Number,
+    data: Object,
   },
   methods: {
     updateMinAndMaxResponseTimes() {
@@ -70,6 +72,9 @@ export default {
         return minutes + " minute" + (minutes !== "1" ? "s" : "") + " ago";
       }
       return (differenceInMs/1000).toFixed(0) + " seconds ago";
+    },
+    showTooltip(result, event) {
+      this.$emit('showTooltip', result, event);
     }
   },
   watch: {
diff --git a/web/app/src/components/ServiceGroup.vue b/web/app/src/components/ServiceGroup.vue
index 4291971e..f358dcb8 100644
--- a/web/app/src/components/ServiceGroup.vue
+++ b/web/app/src/components/ServiceGroup.vue
@@ -14,7 +14,7 @@
     </slot>
     <div v-if="!collapsed" :class="name === 'undefined' ? '' : 'service-group-content'">
       <slot v-for="service in services" :key="service">
-        <Service :data="service"/>
+        <Service :data="service" @showTooltip="showTooltip" :maximumNumberOfResults="50" />
       </slot>
     </div>
   </div>
@@ -55,6 +55,9 @@ export default {
     },
     toggleGroup() {
       this.collapsed = !this.collapsed;
+    },
+    showTooltip(result, event) {
+      this.$emit('showTooltip', result, event);
     }
   },
   watch: {
diff --git a/web/app/src/components/Services.vue b/web/app/src/components/Services.vue
index f31bd8d9..44973f44 100644
--- a/web/app/src/components/Services.vue
+++ b/web/app/src/components/Services.vue
@@ -12,7 +12,7 @@
     </div>
     <div id="results">
       <slot v-for="serviceGroup in serviceGroups" :key="serviceGroup">
-        <ServiceGroup :services="serviceGroup.services" :name="serviceGroup.name" />
+        <ServiceGroup :services="serviceGroup.services" :name="serviceGroup.name" @showTooltip="showTooltip" />
       </slot>
     </div>
   </div>
@@ -28,7 +28,6 @@ export default {
     ServiceGroup
   },
   props: {
-    maximumNumberOfResults: Number,
     showStatusOnHover: Boolean,
     serviceStatuses: Object
   },
@@ -54,6 +53,9 @@ export default {
         serviceGroups.push({name: 'undefined', services: outputByGroup['undefined']})
       }
       this.serviceGroups = serviceGroups;
+    },
+    showTooltip(result, event) {
+      this.$emit('showTooltip', result, event);
     }
   },
   watch: {
diff --git a/web/app/src/components/Settings.vue b/web/app/src/components/Settings.vue
index d903e33e..0f0493f1 100644
--- a/web/app/src/components/Settings.vue
+++ b/web/app/src/components/Settings.vue
@@ -29,7 +29,7 @@ export default {
       }, seconds * 1000);
     },
     refreshStatuses() {
-      this.$emit('refreshStatuses')
+      this.$emit('refreshStatuses');
     },
     handleChangeRefreshInterval() {
       this.refreshStatuses();
diff --git a/web/app/src/components/Tooltip.vue b/web/app/src/components/Tooltip.vue
new file mode 100644
index 00000000..3b66b2d1
--- /dev/null
+++ b/web/app/src/components/Tooltip.vue
@@ -0,0 +1,135 @@
+<template>
+  <div id="tooltip" ref="tooltip" :class="hidden ? 'invisible' : ''" :style="'top:' + top + 'px; left:' + left + 'px'">
+    <slot v-if="result">
+      <div class="tooltip-title">Timestamp:</div>
+      <code id="tooltip-timestamp">{{ prettifyTimestamp(result.timestamp) }}</code>
+      <div class="tooltip-title">Response time:</div>
+      <code id="tooltip-response-time">{{ (result.duration / 1000000).toFixed(0) }}ms</code>
+      <div class="tooltip-title">Conditions:</div>
+      <code id="tooltip-conditions">
+        <slot v-for="conditionResult in result.conditionResults" :key="conditionResult">
+          {{ conditionResult.success ? "&#10003;" : "X" }} ~ {{ conditionResult.condition }}<br/>
+        </slot>
+      </code>
+      <div id="tooltip-errors-container" v-if="result.errors && result.errors.length">
+        <div class="tooltip-title">Errors:</div>
+        <code id="tooltip-errors">
+          <slot v-for="error in result.errors" :key="error">
+            - {{ error }}<br/>
+          </slot>
+        </code>
+      </div>
+    </slot>
+  </div>
+</template>
+
+
+<script>
+export default {
+  name: 'Services',
+  props: {
+    event: Event,
+    result: Object
+  },
+  methods: {
+    prettifyTimestamp(timestamp) {
+      let date = new Date(timestamp);
+      let YYYY = date.getFullYear();
+      let MM = ((date.getMonth() + 1) < 10 ? "0" : "") + "" + (date.getMonth() + 1);
+      let DD = ((date.getDate()) < 10 ? "0" : "") + "" + (date.getDate());
+      let hh = ((date.getHours()) < 10 ? "0" : "") + "" + (date.getHours());
+      let mm = ((date.getMinutes()) < 10 ? "0" : "") + "" + (date.getMinutes());
+      let ss = ((date.getSeconds()) < 10 ? "0" : "") + "" + (date.getSeconds());
+      return YYYY + "-" + MM + "-" + DD + " " + hh + ":" + mm + ":" + ss;
+    },
+    htmlEntities(s) {
+      return String(s)
+          .replace(/&/g, '&amp;')
+          .replace(/</g, '&lt;')
+          .replace(/>/g, '&gt;')
+          .replace(/"/g, '&quot;')
+          .replace(/'/g, '&apos;');
+    },
+    reposition() {
+      if (this.event && this.event.type) {
+        if (this.event.type === 'mouseenter') {
+          let targetTopPosition = this.event.target.getBoundingClientRect().y + 30;
+          let targetLeftPosition = this.event.target.getBoundingClientRect().x;
+          let tooltipBoundingClientRect = this.$refs.tooltip.getBoundingClientRect();
+          if (targetLeftPosition + window.scrollX + tooltipBoundingClientRect.width + 50 > document.body.getBoundingClientRect().width) {
+            targetLeftPosition = this.event.target.getBoundingClientRect().x - tooltipBoundingClientRect.width + this.event.target.getBoundingClientRect().width;
+            if (targetLeftPosition < 0) {
+              targetLeftPosition += -targetLeftPosition;
+            }
+          }
+          if (targetTopPosition + window.scrollY + tooltipBoundingClientRect.height + 50 > document.body.getBoundingClientRect().height && targetTopPosition >= 0) {
+            targetTopPosition = this.event.target.getBoundingClientRect().y - (tooltipBoundingClientRect.height + 10);
+            if (targetTopPosition < 0) {
+              targetTopPosition = this.event.target.getBoundingClientRect().y + 30;
+            }
+          }
+          this.top = targetTopPosition;
+          this.left = targetLeftPosition;
+        } else if (this.event.type === 'mouseleave') {
+          this.hidden = true;
+        }
+      }
+    }
+  },
+  watch: {
+    event: function (value) {
+      if (value && value.type) {
+        if (value.type === 'mouseenter') {
+          this.hidden = false;
+        } else if (value.type === 'mouseleave') {
+          this.hidden = true;
+        }
+      }
+    }
+  },
+  updated() {
+    this.reposition();
+  },
+  created() {
+    this.reposition();
+  },
+  data() {
+    return {
+      hidden: false,
+      top: 0,
+      left: 0
+    }
+  }
+}
+</script>
+
+
+<style>
+#tooltip {
+  position: fixed;
+  background-color: white;
+  border: 1px solid lightgray;
+  border-radius: 4px;
+  padding: 6px;
+  font-size: 13px;
+}
+
+#tooltip code {
+  color: #212529;
+  line-height: 1;
+}
+
+#tooltip .tooltip-title {
+  font-weight: bold;
+  margin-bottom: 0;
+  display: block;
+}
+
+#tooltip .tooltip-title {
+  margin-top: 8px;
+}
+
+#tooltip > .tooltip-title:first-child {
+  margin-top: 0;
+}
+</style>