What Is Air Quality Index (AQI)? Understanding AQI and Indoor Air Quality Monitoring in Malaysia
What Is Air Quality Index (AQI)? Understanding AQI and Indoor Air Quality Monitoring in Malaysia
Introduction
The Air Quality Index (AQI) is a simple way of describing air quality conditions using an easy-to-understand index rather than presenting individual pollutant measurements alone.
AQI is widely used by environmental agencies, organisations, and air quality monitoring professionals to provide a quick overview of air quality conditions. Many modern indoor air quality monitors also display an AQI value to help users understand environmental conditions more conveniently.
The Temtop LKC-1000S+ 2nd includes an AQI display together with PM2.5, PM10, TVOC, HCHO, temperature, and humidity, providing users with a comprehensive overview of indoor air quality.
What Is AQI?
AQI stands for Air Quality Index.
Instead of focusing on one specific pollutant, AQI is an index designed to present overall air quality information in a simple format that is easier to interpret.
Different countries and organisations may use different AQI calculation methods, so AQI values are not always directly comparable across every system.
For this reason, it is helpful to consider AQI together with the individual environmental parameters measured by the instrument.
Why Is AQI Useful?
AQI helps users:
Quickly review overall air quality conditions
Compare environmental conditions between different locations
Observe changes over time
Support routine environmental monitoring
Simplify indoor air quality reporting
Complement detailed IAQ measurements
AQI provides a convenient summary but does not replace individual pollutant measurements.
What Parameters Affect Indoor Air Quality?
Professional IAQ monitoring typically includes:
PM2.5
PM10
Carbon Dioxide (CO₂)
TVOC
Formaldehyde (HCHO)
Temperature
Relative Humidity
Reviewing these parameters alongside AQI provides a more complete understanding of the indoor environment.
Where Is AQI Monitoring Useful?
AQI is commonly used in:
Commercial Buildings
Offices
Meeting rooms
Shopping malls
Hotels
Educational Facilities
Schools
Universities
Libraries
Healthcare Facilities
Hospitals
Clinics
Medical centres
Industrial and Commercial Applications
Manufacturing facilities
Warehouses
Laboratories
Government buildings
Property management
Environmental consulting
AQI provides a convenient overview while detailed measurements support professional environmental assessments.
Recommended Temtop Instrument
Temtop LKC-1000S+ 2nd
The Temtop LKC-1000S+ 2nd measures:
AQI
PM2.5
PM10
TVOC
Formaldehyde (HCHO)
Temperature
Relative Humidity
It is particularly suitable for:
Post-renovation assessments
Office environmental monitoring
Property inspections
Building handovers
Hotel environmental monitoring
General indoor air quality assessments
Best Practices for Using AQI
When monitoring indoor environments:
Review AQI together with PM2.5 and PM10 readings
Consider TVOC and HCHO measurements after renovation
Monitor conditions in representative indoor locations
Record measurements over time to identify trends
Compare different rooms within the same building
Using AQI together with individual parameters provides a more informative assessment than relying on the AQI value alone.
Choosing the Right Indoor Air Quality Monitor
Monitoring RequirementRecommended InstrumentCO₂ MonitoringTemtop M2000 2ndAQI DisplayTemtop LKC-1000S+ 2ndTVOC MonitoringTemtop LKC-1000S+ 2ndHCHO MonitoringBoth ModelsPM2.5 / PM10Both ModelsTemperature & HumidityBoth Models
Selecting the appropriate monitor depends on the environmental parameters most relevant to your application.
Why Choose MTM Precision?
MTM Precision Sdn. Bhd. supplies professional indoor air quality monitoring instruments and environmental monitoring solutions for commercial buildings, industrial facilities, healthcare organisations, educational institutions, laboratories, environmental consultants, and government agencies throughout Malaysia.
We help customers choose suitable IAQ monitoring solutions based on their building type, monitoring objectives, and operational requirements.
Contact MTM Precision
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: +6016-660 7346
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What is IAQ?
Why IAQ Matters
What Causes Poor IAQ?
How to Improve IAQ
What is PM2.5?
What is PM10?
What is TVOC?
What is HCHO?
What is CO₂?
What is AQI?
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Why TVOC Monitoring Is Important
Why Formaldehyde Testing Is Important
How to Measure Indoor Air Quality
How Often Should Indoor Air Quality Be Tested?
Indoor Air Quality After Renovation
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How to Choose the Right Indoor Air Quality Monitor
09 Aug 2026
