How Johor Businesses Can Prepare for Haze Season Malaysia
Meta Description: A practical haze preparation guide for Johor businesses covering official API monitoring, indoor PM2.5, air purifiers, HVAC filters, outdoor work and response planning.
How Johor Businesses Can Prepare for Haze Season Malaysia
Businesses in Johor should prepare for haze before the official Air Pollutant Index reaches unhealthy levels.
A serious haze episode can affect:
Employee health and comfort
Outdoor work
Deliveries
Site inspections
Visibility
Building ventilation
Indoor PM2.5
Customer activity
School and office operations
Preparation helps management respond systematically instead of purchasing equipment and developing procedures during an emergency.
A good haze plan combines official API information, indoor air-quality measurements, filtration maintenance and clear staff responsibilities.
Which Johor Businesses Need a Haze Plan?
Preparation is relevant to:
Factories
Warehouses
Offices
Retail shops
Schools
Clinics
Hotels
Logistics companies
Construction businesses
Surveying teams
Maintenance contractors
Outdoor service providers
The plan should reflect the business’s location, building type and amount of outdoor work.
Step 1: Assign Responsibility
Identify who will be responsible for:
Checking the official API
Monitoring indoor PM2.5
Recording measurements
Checking air purifiers
Reviewing filters
Communicating with employees
Reviewing outdoor work
Escalating urgent decisions
Possible responsible personnel include:
Safety and health officer
Facility manager
Human resources
Administration
Maintenance team
Operations manager
Building management
Assign a backup person to avoid delays.
Step 2: Identify the Official API Source
The official Air Pollutant Index—API should remain the main reference for regional outdoor air quality and government instructions.
The business procedure should record:
Where to check the API
Which station is most relevant
How often it will be reviewed
Who communicates changes
How the time of each reading is recorded
Do not rely only on forwarded screenshots or social-media messages.
Step 3: Review Outdoor Work
Identify employees who regularly work outdoors:
Construction workers
Surveyors
Delivery personnel
Security staff
Maintenance technicians
Loading workers
Drivers
Site supervisors
Sales and service teams
The haze plan should address:
Rescheduling
Task reduction
Indoor reassignment
Rest arrangements
Visibility
Driving
Respiratory protection
Official workplace guidance
Operational decisions should follow current instructions from the relevant authorities and the company’s safety procedures.
Step 4: Identify Indoor Priority Areas
Recommended monitoring locations include:
Reception
Open offices
Meeting rooms
Control rooms
Worker rest areas
Clinics or sick bays
Classrooms
Warehouses
Loading bays
Security posts
Rooms with air purifiers
Do not assume that one office reading represents the entire premises.
Step 5: Establish PM2.5 Baseline Readings
Before haze arrives, record normal indoor PM2.5.
Include:
Location
Date and time
PM2.5
PM10, if available
Number of occupants
Door and window status
Air-conditioning
Ventilation
Air purifier
Business activity
Outdoor API
Baseline readings make future changes easier to identify.
Example Business Monitoring Record
TimeLocationPM2.5CO₂OccupantsHVACPurifierRemarksRecordReceptionRecordRecordRecordRecordRecordRecordRecordOfficeRecordRecordRecordRecordRecordRecordRecordMeeting roomRecordRecordRecordRecordRecordRecordRecordRest areaRecordRecordRecordRecordRecordRecord
Use actual measurements and document unusual conditions.
Step 6: Select a Suitable Monitor
For haze, the instrument must include:
PM2.5
Depending on the workplace, useful additional parameters may include:
PM10
CO₂
Temperature
Humidity
HCHO
TVOC
Data logging
Adjustable alarms
A CO₂-only monitor cannot measure haze particles.
Step 7: Inspect Air Purifiers
Before haze season, record:
Purifier model
Room coverage
Filter type
Filter age
Replacement schedule
Spare-filter quantity
Unit location
Fan operation
Power supply
Confirm that the air intake and outlet are not blocked.
Step 8: Test Purifier Performance
Position the PM2.5 monitor away from the purifier.
Record the initial PM2.5.
Switch on the purifier.
Record the fan-speed setting.
Keep room conditions consistent.
Measure at regular intervals.
Test the point furthest from the purifier.
Review whether PM2.5 decreases.
A running fan does not prove that particles have been reduced throughout the room.
Step 9: Review HVAC Maintenance
Air-conditioning controls temperature but does not automatically provide effective PM2.5 filtration.
Check:
Filter condition
Filter installation
Maintenance schedule
Fresh-air intake
Return-air system
Building leakage
Replacement-filter availability
Fine particles may enter through fresh-air intakes, open doors and gaps.
Step 10: Check Entrances and Loading Areas
Common particle-entry points include:
Main doors
Roller shutters
Loading bays
Car park entrances
Service doors
Windows
Outdoor-air intakes
Compare PM2.5:
Outside the entrance
Immediately inside
In the centre of the building
Inside an enclosed room
This can help identify areas that require further attention.
Step 11: Prepare Cleaner Indoor Rooms
A cleaner room may support:
Essential indoor work
Temporary staff relocation
Rest periods
More vulnerable employees
Meetings during haze
The room should be checked for:
PM2.5
CO₂
Filtration
Air purifier performance
Door and window condition
Occupancy capacity
Air-conditioning
Select the room using measurement—not appearance alone.
Step 12: Review CO₂ in Occupied Rooms
When windows and doors are kept closed, CO₂ may increase in:
Meeting rooms
Training rooms
Control rooms
Offices
Classrooms
Worker rest areas
PM2.5 and CO₂ represent different conditions.
Businesses should consider both measurements and seek professional guidance where required to balance particle control and ventilation needs.
Step 13: Prepare Respiratory Protection
Where respiratory protection is required, preparation may include:
Correct respirator type
Sufficient stock
Suitable storage
Employee training
Fit testing where required
Replacement procedures
Identification of outdoor employees
Follow current Malaysian health and workplace guidance.
Step 14: Prepare Employee Communication
Employees should know:
Where official updates come from
Who issues company instructions
What outdoor work may change
Where cleaner rooms are located
How to report symptoms or concerns
Who manages respirator distribution
Whether work schedules are adjusted
Avoid conflicting messages from several departments.
Step 15: Decide Whether Data Logging Is Needed
Data logging is useful for:
Monitoring an entire workday
Identifying particle spikes
Reviewing entrance activity
Comparing shifts
Checking purifier performance
Recording haze infiltration
Documenting corrective actions
Spot checks may be sufficient for small offices, while larger facilities may require continuous monitoring.
Which Temtop Monitor Is Suitable?
Temtop M2000 2nd
Measures:
PM2.5
PM10
CO₂
HCHO
Temperature
Humidity
Data export
Suitable for occupied offices, meeting rooms, classrooms and control rooms.
Temtop LKC-1000S+ 2nd
Measures:
PM2.5
PM10
HCHO
TVOC
Temperature
Humidity
Data export
Suitable for haze monitoring and general chemical-pollutant screening.
Temtop M10i
May be suitable for compatible Wi-Fi monitoring and mobile access to historical trends in a fixed location, subject to the supplied version.
Common Business Preparation Mistakes
Waiting Until the API Is Unhealthy
Monitors, purifiers and replacement filters may become difficult to obtain.
Having No Baseline
Without normal readings, changes are harder to interpret.
Testing Only the Purifier’s Fan
Purifier operation should be checked using PM2.5 measurements.
Monitoring Only Reception
Work areas may have different conditions.
Ignoring Outdoor Employees
Their tasks require separate planning.
Assuming Air-Conditioning Removes Haze
Actual filtration depends on the system and maintenance.
Using a Portable Monitor to Override Official Instructions
Local measurements do not replace government guidance.
Johor Business Haze Readiness Checklist
Before haze season, confirm:
Responsible personnel assigned
Official API source identified
Outdoor work reviewed
Priority indoor areas listed
PM2.5 monitor available
Baseline readings recorded
Air purifiers tested
Spare filters available
HVAC filters inspected
Cleaner rooms identified
Respiratory-protection procedure reviewed
Staff communication prepared
Recording forms ready
Escalation contacts listed
Prepare Before Conditions Become Urgent
A prepared Johor business should already know:
Who checks the API
Which employees work outdoors
What normal indoor PM2.5 looks like
Whether air purifiers work
Which filters require replacement
Which rooms are better protected
How information is communicated
When professional assessment is needed
Preparation turns a sudden haze episode into a manageable operational response.
Contact MTM Precision
Contact MTM Precision for assistance selecting a PM2.5 Air Quality Monitor for haze preparation in offices, factories, schools and businesses throughout Johor, Malaysia.
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia
🌐 Website: www.mtmpre.com.my
📧 Email: mtmpre@yahoo.com
📱 WhatsApp: 016-660 7346
07 Sep 2026
