With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoEnvMonTemperatureStatusIndex
cisco Environmental Monitor Temperature Status Index
1.3.6.1.4.1.9.9.13.1.3.1.1
Unique index for the testpoint being instrumented. This index is for SNMP purposes only, and has no intrinsic meaning.
Back to CISCO-ENVMON-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoEnvMonTemperatureStatusIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.