JOHOR BARU - The air quality in Johor has improved with the air pollutant index (API) falling back into the moderate range compared to Friday's "very unhealthy" and "unhealthy" readings.
As of 9am, Kota Tinggi recorded an Air Pollutant Index (API) reading of 68, Larkin Lama was 92, Muar was 81 while Pasir Gudang was 88.
Larkin Lama and Pasir Gudang recorded readings of 104 and 105 respectively at 6am.
Along the North-South Expressway heading north on Saturday morning, visibility was slightly affected due to the slight haze and morning mist.
On Friday, Johor was hit with "very unhealthy" levels with API reading of 201 in Pasir Gudang, with other areas recorded "unhealthy" levels.
An API reading of between 0 and 50 is considered good, 51 to 100 (moderate), 101 to 200 (unhealthy), 201 to 300 (very unhealthy), and 301 and above (hazardous).
The API is calculated based on five major air pollutants, namely Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2), Ground Level Ozone (O3), Carbon Monoxide (CO) and particulate matter with a diameter below 10 micrometers (PM10).