Padang, Indonesia, was shrouded by smog on September 13 as the city's air quality was listed as 6.6 times worse than the World Health Organisation's guidelines.

According to IQAir, the city's PM2.5 concentration was listed as 6.6 times worse than the WHO's guideline.

The New York State Department of Health states: "Particle pollution from fine particulates (PM2.5) is a concern when levels in air are unhealthy. Breathing in unhealthy levels of PM2.5 can increase the risk of health problems like heart disease, asthma, and low birth weight. Unhealthy levels can also reduce visibility and cause the air to appear hazy."

THE SMOG WAS SEEN BEGINNING TO COVER THE SKY OF PADANG CITY/WEST SUMATRA ON TUESDAY MORNING//THE SHAFT WAS CAUSED BY FOREST AND LAND FIRES FROM THE PROVINCES OF JAMBI AND SOUTH SUMATRA//BASED ON DATA/INDEX AIR POLLUTION STANDARDS (ISPU) IN THE FOUR REGIONS ARE IN THE MEDIUM CATEGORY WITH AIR QUALITY PARAMETERS AT 63 FOR PM 2.5//CITIZENS ARE ASKED TO REDUCE ACTIVITIES OUTSIDE THE HOME AND USE MASK TO AVOID RESPIRATORY TRACT DISEASES DUE TO SMOG