With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwrThreshAttribute
Cisco Wireless Threshold Attribute
1.3.6.1.4.1.9.9.136.1.8.1.1.2
This represents the attribute of a radio link which needs to be thresholded. For each of these attributes, the cwrThreshType identifies the type of change to monitor. When that threshold is exceeded a Trap with appropriate parameters will be generated.
Back to CISCO-WIRELESS-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cwrThreshAttribute 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.