Internet of Things (IoT) may be a worldwide system of “smart devices” which will sense and connect with their surroundings and interact with users and other systems. Global air pollution is one of the major concerns of our era. The level of pollution has increased with times by lot of things like the increase in population, increased vehicle use, industrialization and urbanization which ends up in harmful effects on human wellbeing by directly affecting health of population exposed to it. Air quality goes down when enough amount of harmful gases present in the air like carbon dioxide, smoke, alcohol, benzene, NH3, and NO2. In order to analyses we are developing an IOT Based pollution Monitoring System which we'll monitor the Air Quality over an internet server. Existing monitoring systems have inferior precision, low sensitivity, and need laboratory analysis. Therefore, improved monitoring systems are needed. To overcome the issues of existing systems, we propose a three-phase pollution monitoring system. In this IOT project, you can monitor the pollution level from anywhere using your computer or mobile device. It measures their amount exactly and finds out harmful gases
Reconnect ESP8266 to a Wi-Fi network after losing the connection. This can be useful in the following scenarios: the ESP8266 temporarily loses Wi-Fi signal; the ESP8266 is temporarily out of the router’s Wi-Fi range; the router restarts; the router loses internet connection or other situations.