diff --git a/apps/web/src/routes/monitors.ts b/apps/web/src/routes/monitors.ts
index c49e5cc..5993dda 100644
--- a/apps/web/src/routes/monitors.ts
+++ b/apps/web/src/routes/monitors.ts
@@ -10,7 +10,7 @@ const MonitorBody = t.Object({
   request_headers: t.Optional(t.Any({ description: "Request headers as key-value object" })),
   request_body:    t.Optional(t.Nullable(t.String({ description: "Request body for POST/PUT/PATCH" }))),
   timeout_ms:      t.Optional(t.Number({ minimum: 1000, maximum: 60000, default: 30000, description: "Request timeout in ms" })),
-  interval_s:      t.Optional(t.Number({ minimum: 10, default: 60, description: "Check interval in seconds" })),
+  interval_s:      t.Optional(t.Number({ minimum: 1, default: 60, description: "Check interval in seconds" })),
   query:           t.Optional(t.Any({ description: "PingQL query — filter conditions for up/down" })),
 });
 
diff --git a/apps/web/src/views/detail.ejs b/apps/web/src/views/detail.ejs
index b67a5a5..f870ef1 100644
--- a/apps/web/src/views/detail.ejs
+++ b/apps/web/src/views/detail.ejs
@@ -157,7 +157,7 @@
             <div class="flex-1">
               <label class="block text-sm text-gray-400 mb-1.5">Interval</label>
               <select id="edit-interval" class="w-full bg-gray-800 border border-gray-700 rounded-lg px-4 py-2.5 text-gray-100 focus:outline-none focus:border-blue-500">
-                <% [['10','10 seconds'],['30','30 seconds'],['60','1 minute'],['300','5 minutes'],['600','10 minutes'],['1800','30 minutes'],['3600','1 hour']].forEach(function([val, label]) { %>
+                <% [['1','1 second'],['2','2 seconds'],['5','5 seconds'],['10','10 seconds'],['20','20 seconds'],['30','30 seconds'],['60','1 minute'],['300','5 minutes'],['600','10 minutes'],['1800','30 minutes'],['3600','1 hour']].forEach(function([val, label]) { %>
                   <option value="<%= val %>" <%= String(m.interval_s) === val ? 'selected' : '' %>><%= label %></option>
                 <% }) %>
               </select>
diff --git a/apps/web/src/views/new.ejs b/apps/web/src/views/new.ejs
index 6e6c3d4..de5b7bd 100644
--- a/apps/web/src/views/new.ejs
+++ b/apps/web/src/views/new.ejs
@@ -53,7 +53,11 @@
           <label class="block text-sm text-gray-400 mb-1.5">Ping Interval</label>
           <select id="interval"
             class="w-full bg-gray-900 border border-gray-800 rounded-lg px-4 py-2.5 text-gray-100 focus:outline-none focus:border-blue-500">
+            <option value="1">1 second</option>
+            <option value="2">2 seconds</option>
+            <option value="5">5 seconds</option>
             <option value="10">10 seconds</option>
+            <option value="20">20 seconds</option>
             <option value="30">30 seconds</option>
             <option value="60" selected>1 minute</option>
             <option value="300">5 minutes</option>