diff --git a/succbone/succd/http.go b/succbone/succd/http.go
index f1503e7..9a43281 100644
--- a/succbone/succd/http.go
+++ b/succbone/succd/http.go
@@ -62,6 +62,17 @@ type apiData struct {
 		// DPOn means the diffusion pump is turned on.
 		DPOn bool
 	}
+	// Temperature state.
+	Temperatures struct {
+		DPBottom float32
+		DPTop    float32
+		DPInlet  float32
+		SEM      float32
+	}
+	// Humidity state.
+	Humidity struct {
+		SEM float32
+	}
 	// Pressure feedback into evacuation board.
 	Feedback struct {
 		// RoughReached is true when the system has reached a rough vacuum
@@ -115,6 +126,11 @@ func (s *webServer) apiData(skipSystem bool) *apiData {
 	ad.Pirani.MbarFloat = mbar
 	ad.Pumps.RPOn = state.rpOn
 	ad.Pumps.DPOn = state.dpOn
+	ad.Temperatures.DPBottom = state.tempDPBottom
+	ad.Temperatures.DPTop = state.tempDPTop
+	ad.Temperatures.DPInlet = state.tempDPInlet
+	ad.Temperatures.SEM = state.tempSEM
+	ad.Humidity.SEM = state.humiditySEM
 	ad.Feedback.RoughReached = rough
 	ad.Feedback.HighReached = high
 	ad.LoopLoad = s.d.loopLoad()
diff --git a/succbone/succd/index.html b/succbone/succd/index.html
index abd5695..c598f0c 100644
--- a/succbone/succd/index.html
+++ b/succbone/succd/index.html
@@ -111,6 +111,22 @@ td > span {
             <th>DP</th>
             <td id="dp">{{ if .Pumps.DPOn }}ON{{ else }}OFF{{ end }}</td>
         </tr>
+        <tr>
+            <th>Temperatures</th>
+            <th>SEM</th>
+            <td id="temp-sem">{{ .Temperatures.SEM }}</td>
+            <th>DPBottom</th>
+            <td id="temp-dp-bottom">{{ .Temperatures.DPBottom }}</td>
+            <th>DPTop</th>
+            <td id="temp-dp-top">{{ .Temperatures.DPTop }}</td>
+            <th>DPInlet</th>
+            <td id="temp-dp-inlet">{{ .Temperatures.DPInlet }}</td>
+        </tr>
+        <tr>
+            <th>Humidity</th>
+            <th>SEM</th>
+            <td id="humidity-sem">{{ .Humidity.SEM }}</td>
+        </tr>
         <tr>
             <th>Safety</th>
             <th style="font-size: 0.7em;">Pirani<br />Failsafe</th>
@@ -316,6 +332,11 @@ window.addEventListener("load", (_) => {
     let trough = document.querySelector("#trough");
     let thigh = document.querySelector("#thigh");
     let load = document.querySelector("#load");
+    let tempSEM = document.querySelector("#temp-sem");
+    let tempDPBottom = document.querySelector("#temp-dp-bottom");
+    let tempDPTop = document.querySelector("#temp-dp-top");
+    let tempDPInlet = document.querySelector("#temp-dp-inlet");
+    let humiditySEM = document.querySelector('#humidity-sem');
 
     // Buttons
     let pd = document.querySelector("#pd");
@@ -388,6 +409,12 @@ window.addEventListener("load", (_) => {
                 dp.style = colors.default;
             }
 
+            tempSEM.innerHTML = data.Temperatures.SEM + "&nbsp;°C";
+            tempDPBottom.innerHTML = data.Temperatures.DPBottom + "&nbsp;°C";
+            tempDPTop.innerHTML = data.Temperatures.DPTop + "&nbsp;°C";
+            tempDPInlet.innerHTML = data.Temperatures.DPInlet + "&nbsp;°C";
+            humiditySEM.innerHTML = data.Humidity.SEM + "&nbsp;%";
+
             let t = [];
             if (data.Feedback.RoughReached) {
                 trough.innerHTML = "OK";
@@ -413,7 +440,7 @@ window.addEventListener("load", (_) => {
 
             // Indicate all process values as unknown
 
-            [failsafe, highpressure, rp, dp, trough, thigh, volts, mbar].forEach((el) => {
+            [failsafe, highpressure, rp, dp, trough, thigh, volts, mbar, tempDPBottom, tempDPTop, tempDPInlet].forEach((el) => {
                 if (!el.innerHTML.includes("??")) {
                     el.innerHTML += "??";
                 }
diff --git a/succbone/succd/main.go b/succbone/succd/main.go
index 64663a8..a56f2cc 100644
--- a/succbone/succd/main.go
+++ b/succbone/succd/main.go
@@ -35,6 +35,12 @@ func main() {
 	d.daemonState.piraniVolts3.limit = 3
 	d.daemonState.piraniVolts100.limit = 100
 
+	d.tempDPBottom = 420.6
+	d.tempDPTop = 69.0
+	d.tempDPInlet = 42.0
+	d.tempSEM = 42.5
+	d.humiditySEM = 66.6
+
 	d.aboveRough.threshold = float64(flagPressureThresholdRough)
 	d.aboveRough.hysteresis = float64(flagPressureThresholdRoughHysteresis)
 	d.aboveHigh.threshold = float64(flagPressureThresholdHigh)
diff --git a/succbone/succd/process.go b/succbone/succd/process.go
index de99e84..c886260 100644
--- a/succbone/succd/process.go
+++ b/succbone/succd/process.go
@@ -55,6 +55,13 @@ type daemonState struct {
 	pumpdown   momentaryOutput
 	aboveRough thresholdOutput
 	aboveHigh  thresholdOutput
+
+	tempDPBottom float32
+	tempDPTop    float32
+	tempDPInlet  float32
+
+	tempSEM     float32
+	humiditySEM float32
 }
 
 func (d *daemonState) vacuumStatus() (rough, high bool) {