---
type: Monitoring Guide
title: "How to Monitor Server Room Temperature & Humidity via SNMP"
description: "Read ambient temperature and relative humidity from an SNMP room probe, apply scale, and set floor and ceiling alert thresholds."
resource: "https://snmp-monitoring.info/monitoring/environmental/temp-humidity/"
tags: [monitoring]
timestamp: 2026-07-11T00:00:00Z
---

# How to Monitor Server Room Temperature & Humidity via SNMP

Read ambient temperature and relative humidity from an SNMP room probe, apply scale, and set floor and ceiling alert thresholds.

## Related concepts

- Up: [SNMP Environmental Monitoring: Temp, Humidity, Leak & Smoke](/monitoring/environmental/index.md)

## Frequently asked questions

### Can SNMP monitor humidity?

Yes. Room probes report relative humidity as percentRH, exposed either through ENTITY-SENSOR-style objects or a vendor probe MIB under 1.3.6.1.4.1, and your manager polls the gateway the probe plugs into. Apply the sensor's scale to the raw value, then alert on both a floor and a ceiling.

### What temperature is safe for a server room?

Common guidance puts the recommended envelope around 18–27 °C, with wider allowable ranges above that — but verify against the current ASHRAE guidelines and your own equipment specs before committing to a number. Alert on a sustained rise past your ceiling rather than on a single momentary reading.

### How do I convert the probe value?

Read the sensor's scale and precision and apply them to the raw integer. Many probes report temperature in tenths, so a raw 214 decodes to 21.4 °C; humidity is usually a whole-number percentage, so 52 is 52 %RH. Load the vendor MIB so the scale resolves instead of guessing.

### What humidity causes condensation?

Condensation risk climbs as relative humidity approaches saturation, especially where warm humid air meets a colder surface below its dew point. That's why high RH (roughly above the ~60% recommended ceiling) is treated as a warning — and why rapid humidity swings, which can condense on lagging surfaces, matter too.

## Source

Concept generated from https://snmp-monitoring.info/monitoring/environmental/temp-humidity/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).