The pressure, light and precipitation of a smart city can be monitored using an IoT- based environmental parameter monitoring system. Framework is sensor-based. A Raspberry Pi board was used containing three sensors attached to it, which are used to sense pressure, light and precipitation, and the board is connected to the internet. It was linked to a channel created on www.thinkspeak.com in order to put the prepared framework into action. The Raspberry Pi B3+ has been linked to the sensors, and data is being delivered to the www.thinkspeak.com channel. Sensors collect data, which is then sent to the client over the HTTP protocol. Via a USB dongle, the board is connected to the internet. The outcomes are shown graphically on www.thingspeak.com.