In this work, an IoT based setup, which monitors the surrounding environmental parameters for smart cities, is proposed. The data is sent to a public MQTT broker from where any client, with an appropriate topic, can subscribe for that data. Currently, one of the biggest problems in the world is Air Pollution reaching alarming levels. This work attempts to monitor the air quality of a locale and send this data to people who can use this data to improve the quality of living of citizens, which is one of the primary requirements of a Smart City. This work uses Wio Link board, a ESP8266 based open source Wi-Fi development board and various grove sensors which are connected to the Wio link, viz. temperature and humidity sensor (DHT-11), digital light and air-quality sensors. After this Node-RED comes into play where flows are made to control the publishing of the data over to a MQTT broker. In addition to this, every time data are published an E-mail, an SMS and a Twitter post are generated depicting the values of various sensors.