SemakAPI
Updated MYThourly readingJohor
Tap a landmark to learn about it
63API
Station Larkin, JOHOR · 06:00 MYT

Johor Bahru API today

ModeratePM2.5 ≈ 21.5 µg/m³ · 24-hour average≈ US AQI 74 (Moderate) · estimate, for comparison with international apps

Sensitive people (asthma, elderly, children) should cut back on long or strenuous outdoor activity.

Last 24 hours63 – 70

Official Department of Environment readings, updated hourly. Each city is represented by a single monitoring station. For all 68 stations, see the official APIMS.

Official APIMS readings

3-day forecastForecast

Modelled estimate, not an official reading.

  1. Tomorrow
    72API
    Moderate

    PM2.5 ≈ 28.7 µg/m³

  2. 5 Nov
    65API
    Moderate

    PM2.5 ≈ 23.2 µg/m³

  3. 6 Nov
    55API
    Moderate

    PM2.5 ≈ 15.4 µg/m³

This forecast comes from the Open-Meteo (CAMS) model, not from Department of Environment readings. It shows the expected direction of travel, not an official value. For health decisions, use the current reading above.

Forecast and weather by Open-Meteo.com · CC BY 4.0 · Modified: modelled concentrations are converted to the Malaysian Air Pollutant Index.How accurate is the forecast?

Daily history

The highest reading each day over the last 30 days.

4 Nov65HighAverage 64 · Low 63
6 Oct0 – 3004 Nov

Haze alerts

Get a notification when the air turns unhealthy. No sign-up, and you can turn it off at any time.

Stations in Johor

All stations
  • Pasir Gudang65
    Moderate
  • Kota Tinggi60
    Moderate
  • Pengerang58
    Moderate
  • Tangkak56
    Moderate
  • Batu Pahat54
    Moderate
  • Kluang53
    Moderate
  • Segamat52
    Moderate

Other cities

Tap a city for health advice

Ipoh
7
0
3
ModerateTasek Ipoh, PERAK
Kota Bharu
7
0
11
ModerateKota Bharu, KELANTAN
Shah Alam
7
0
2
ModerateShah Alam, SELANGOR
Klang
6
9
7
ModerateKlang, SELANGOR
Nilai
6
5
7
ModerateNilai, NEGERI SEMBILAN
Putrajaya
6
3
3
ModeratePutrajaya, W.P. PUTRAJAYA
Seremban
6
0
3
ModerateSeremban, NEGERI SEMBILAN
Tawau
6
0
ModerateTawau, SABAH

Common questions: Johor Bahru API

What is the API in Johor Bahru right now?
The API in Johor Bahru is 63 (Moderate) as of 06:00 MYT, 4 Nov, read at the Department of Environment's Larkin, JOHOR station. Sensitive people (asthma, elderly, children) should cut back on long or strenuous outdoor activity.
Which station represents Johor Bahru?
Johor Bahru's reading here comes from the Department of Environment's Larkin, JOHOR station (CA33J), about 1 km from the city centre. One station does not represent a whole city, so other parts of it can read differently.
What will the haze be like in Johor Bahru tomorrow?
The Open-Meteo (CAMS) model puts tomorrow's API at around 65 (Moderate). That is a modelled forecast, not an official Department of Environment reading.
What has the highest reading in Johor Bahru been lately?
Over the last 30 days, the highest reading was 202 on 16 Oct. The daily average across that period was around 131.
Are schools in Johor Bahru closed because of haze?
Since October 2026, schools in an affected area close when the API goes above 180, or stays above 150 for three days in a row, on the instruction of the Ministry of Education or the State Education Department, not from this number alone. The current reading of 63 is well below that level.
When is haze season in Johor Bahru?
The Peninsula's west coast has two risky windows: February to April, when haze is more local, and July to October, the worst window, when the southwest monsoon carries smoke from regional forest and peatland fires. El Niño years are usually worse.

The API scale

0 to 500. Higher is worse.

  • Good0–50
  • Moderate51–100
  • Unhealthy101–200
  • Very Unhealthy201–300
  • Hazardous301–500
  • Emergency500+