A tracheostomy tube monitor and alerting apparatus includes: (i) a passive humidification device; and (ii) an integrated monitoring assembly fitted in an opening of a rear sidewall of the passive humidification device. The passive humidification device is configured to be connected to a connector of a tracheostomy tube of a patient. Once connected, the monitoring assembly of the apparatus can begin measuring one or more physiological parameters, such as, air flow, oxygen level, carbon dioxide level, pressure, and moisture. The measurements are compared against threshold values that denote blockage or decannulation. When these threshold values are surpassed, an alarm is actuated to alert a caregiver that the patient may be experiencing obstruction or decannulation of the tracheostomy tube.