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Johor Bahru haze today: live air quality & guidance

As of 2026-10-11 09:00, the 1-hour PM2.5 in Johor Bahru is 102 µg/m³ (Elevated). Figures are a CAMS atmospheric-model estimate, not an official measurement. This is below the 110 cut-off many youth sports leagues use to call off matches.

Johor Bahru · 1-hour PM2.5 · modelled, not official
102 µg/m³
Elevated · steady (-1/h)

Map

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Next 24 hours

09:00 · PM2.5 102 µg/m³ · rain 0%Now10:00 · PM2.5 93 µg/m³ · rain 22%11:00 · PM2.5 84 µg/m³ · rain 25%12:00 · PM2.5 80 µg/m³ · rain 46%1213:00 · PM2.5 77 µg/m³ · rain 75%14:00 · PM2.5 74 µg/m³ · rain 96%15:00 · PM2.5 74 µg/m³ · rain 100%1516:00 · PM2.5 71 µg/m³ · rain 100%17:00 · PM2.5 65 µg/m³ · rain 98%18:00 · PM2.5 66 µg/m³ · rain 84%1819:00 · PM2.5 73 µg/m³ · rain 65%20:00 · PM2.5 80 µg/m³ · rain 47%21:00 · PM2.5 85 µg/m³ · rain 33%2122:00 · PM2.5 85 µg/m³ · rain 20%23:00 · PM2.5 86 µg/m³ · rain 12%00:00 · PM2.5 82 µg/m³ · rain 10%0001:00 · PM2.5 66 µg/m³ · rain 12%02:00 · PM2.5 59 µg/m³ · rain 14%03:00 · PM2.5 61 µg/m³ · rain 14%0304:00 · PM2.5 60 µg/m³ · rain 15%05:00 · PM2.5 57 µg/m³ · rain 16%06:00 · PM2.5 55 µg/m³ · rain 19%0607:00 · PM2.5 54 µg/m³ · rain 23%08:00 · PM2.5 57 µg/m³ · rain 25%cut-off 110

Cleanest 2-hour window: 2026-10-12 06:00（~55 µg/m³）

CAMS atmospheric-model estimate, not an official forecast. Blue dots mark a likely rain.

Weather

Visibility
11.6 km
Clear
Wind
4 km/h
from S
Rain (next 6 h)
100%
Rain helps clear haze
Temp / feels
28° / 34°
Humidity
81%
UV index
5.0
Moderate · max 8
Sunrise / sunset
06:49 / 18:54
Pressure
1007 hPa

Why is it hazy?

Wind at ~1.5 km altitude: from the S（13 km/h）。 That points toward Central Sumatra (Riau/Jambi), South Sumatra, where fires are active — smoke may be drifting to Johor Bahru.

Central Sumatra (Riau/Jambi)
SW · ~298 km away
462 hotspots / 24h
upwind
South Sumatra
S · ~562 km away
1458 hotspots / 24h
upwind
Kalimantan
E · ~1082 km away
4087 hotspots / 24h
not upwind

6007 hotspots in total（+3492 vs previous 24 h）。 Source: NASA FIRMS (VIIRS), latest pass 2026-10-10 18:15 UTC。

A simplified wind-direction heuristic — it says “likely”, not a proven plume trajectory.

See the source data: NASA FIRMS · haze.gov.sg regional outlook · wind & weather · all causes

Official guidance (NEA)

Next hour (by 1-hour PM2.5)
Normal 0–55
Continue with normal activities
Elevated 56–150
Reduce strenuous outdoor activity for the next hour
now
High 151–250
Avoid strenuous outdoor activity for the next hour
Very High ≥251
Minimise all outdoor activity for the next hour

Vulnerable persons should avoid all strenuous activity for the next hour when the reading is Band 2 (Elevated) or higher.

Planning tomorrow (by 24-hour PSI)

PSI is Singapore's index; there is no matching official PSI for this location.

Good
0–50
Moderate
51–100
Unhealthy
101–200
Very Unhealthy
201–300
Hazardous
>300
Healthy personsNormal activitiesNormal activitiesReduce prolonged or strenuous outdoor exertionAvoid prolonged or strenuous outdoor exertionMinimise outdoor activity
Elderly, pregnant women, childrenNormal activitiesNormal activitiesMinimise prolonged or strenuous outdoor exertionMinimise outdoor activityAvoid outdoor activity
Persons with chronic lung or heart diseaseNormal activitiesNormal activitiesAvoid prolonged or strenuous outdoor exertionAvoid outdoor activityAvoid outdoor activity

Source: NEA's official haze advisory (paraphrased). Confirm at haze.gov.sg. Not medical advice. bands explained · guides by situation · data source

What to do

Team sport / training
Within 15% of the cutoff (110). Could flip within the hour — check again before leaving. full guide →
Running / cycling
NEA Band 2: reduce strenuous outdoor activity for the next hour — go easy and short, or move indoors. Stop if you cough or feel chest tightness. full guide →
School PE / recess
Light activity only, shorten outdoor time, indoor alternatives for asthmatic kids. full guide →
Commute / errands
No special precautions. full guide →
Windows & home air
Keep windows closed; run an air purifier (HEPA) or A/C on recirculate. Avoid frying/incense/candles indoors. full guide →
Hang laundry outside
Smoke settles on fabric — dry indoors or in the dryer. full guide →
Outdoor dining / events
Prefer indoor/covered venues; keep it short. full guide →
Pets
Shorten walks; avoid intense play outdoors. full guide →

FAQ (all questions)

Is it safe to exercise outdoors in Johor Bahru right now?
NEA Band 2: reduce strenuous outdoor activity for the next hour — go easy and short, or move indoors. Stop if you cough or feel chest tightness. The current 1-hour PM2.5 is 102 µg/m³.
Will youth training or matches be cancelled because of haze?
That is the organiser's call. Many leagues use a 1-hour PM2.5 above 110 as the cut-off. Johor Bahru is currently at 102. Within 15% of the cutoff (110). Could flip within the hour — check again before leaving.
Should I check the 1-hour PM2.5 or the 24-hour PSI?
The 24-hour PSI is a slow-moving daily average. For deciding whether to exercise or play now, the 1-hour PM2.5 reflects current conditions better.
What should I do at home?
Keep windows closed; run an air purifier (HEPA) or A/C on recirculate. Avoid frying/incense/candles indoors.

Latest news

Johor extends school closures to Oct 16 as haze worsens
CNA · 11 Oct, 09:35 SGT · Malaysia
School closures in Malaysia due to haze leave parents scrambling for childcare
The Straits Times · 11 Oct, 09:23 SGT · Malaysia
Haze: Malaysia, Indonesia discussing joint solutions
The Edge Malaysia · 11 Oct, 09:06 SGT · Malaysia
Malaysia closes schools in capital, parts of country due to haze
The Courier Mail · 11 Oct, 06:23 SGT · Malaysia · +5 outlets

All news, compared across outlets →

Other places

Singapore · Kuala Lumpur · Kuching · Bandar Seri Begawan · Pekanbaru · Palembang · Jakarta · Bangkok

Official sources (each explained)

🇸🇬 NEA 1-hr PM2.5 · data.gov.sg API
🇲🇾 DOE APIMS / MyJAS
🌏 ASEAN ASMC (hotspots & haze outlook)
🇮🇩 BMKG · 🇹🇭 PCD Air4Thai
🛰 NASA FIRMS
Official data for this area: DOE APIMS (MyJAS)

Guidance is general, not medical advice. Follow your doctor, and your school/league/organiser's final call.

Weather data: Open-Meteo (CC BY 4.0) · JSON: /api/now