Isfahan's polluted air for the fifth consecutive day; The status of 4 regions became red

Isfahan- The air quality index of Isfahan metropolis on Saturday morning with AQI number of 126 shows the orange and unhealthy situation for sensitive groups for the fifth day in a row.

According to Mehr reporter, the air in Isfahan metropolis shows an unhealthy condition for sensitive groups (elderly, people with respiratory diseases, pregnant women and children) with an average AQI of 126, based on the data of 20 active monitoring stations ending at 8:00 am on Saturday, the 25th of Mehr.

The air quality index ranges from 0 to 50 clean air, 51 to 100 healthy air, 101 to 150 unhealthy for sensitive groups, 151 to 200 unhealthy for the public, 201 to 300 very unhealthy and 301 to 500 dangerous.

Based on the data of the online air quality control system of the Environmental Organization (Isfahan region), the air index of this metropolis at the time of publication of this report at the station of Ahmedabad street and Kharazi highway with the number 154, G 155 and the east axis of Isfahan is 157 AQI is in a red and unhealthy state for the general public and at the governorate station with the number 129, Malik Shahr 120, Zamzam Park 128, Parvin Etisami St. 114, Rudaki 140, Rahnan 136, Sepahanshahr and 125 Faiz St., 123 Farshadi St., 128 Kaveh St., 137 Mirza Taher St. and 148 Voldan St. AQI is orange and unhealthy for sensitive groups.

The air index also shows an acceptable condition in University of Technology station with 73, Medical Sciences 99, Zainabiyeh 88 and Montazeri Shahrek 79 AQI.

Earlier, the Isfahan Meteorological Department had issued a yellow level warning regarding the stability of the atmosphere on Friday and today, Saturday 25 October, and the possibility of an increase in the air pollution index in the central and industrial areas of Isfahan.

The air pollution index is usually measured for five air pollutants including carbon monoxide (CO), ozone (O3), nitrogen dioxide (NO2), sulfur dioxide (SO2) and suspended particles below 2.5 microns (PM2.5) and recorded daily at air monitoring stations.

The Air Quality Index is a measure that converts the concentration of various pollutant compounds in the air such as carbon monoxide, sulfur dioxide, nitrogen compounds, ozone and suspended particles (particles smaller than 10 micrometers and particles smaller than 2.5 micrometers), which have different permissible limits with different units, into a unitless number and displays the state of air pollution.