Chiayi Particulate Matter (PM₂.₅) Level
Taiwan
See Air Quality ofChiayi
Chiayi
Download 2024 Annual Data
World Air Quality Report

PM2.5 particles, with a diameter of 2.5 micrometers or less, are approximately 30 times smaller than a human hair, making them a significant yet often unseen threat to air quality.
Most Polluted Cities 2026
Taiwan
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Taipei, Taipei
Good
1xabove Standard
2.
Keelung, Keelung
Good
1xbelow Standard
3.
Nangan, Lienchiang
Good
2xbelow Standard
4.
Pingtung, Pingtung
Good
2xbelow Standard
5.
Bade, Taoyuan
Good
2xbelow Standard
6.
Kaohsiung, Kaohsiung
Good
2xbelow Standard
7.
Pingzhen, Taoyuan
Good
3xbelow Standard
8.
Zhongli, Taoyuan
Good
3xbelow Standard
9.
Banqiao, New Taipei
Good
3xbelow Standard
10.
Nantou, Nantou
Good
3xbelow Standard
Last Updated: 04 Jun 2026, 10:23 AM
AQI City RankingsUncovering the Sources of Particulate Matter (PM₂.₅): Where Does It Come From?
Windblown Dust
Daily activities like construction or other practicesHome-related emission
Household activities, such as cooking and heatingFactories and industries' emission
Regular operations in factories and industriesPower plants generation
Emission from Routine energy production in power plantsLandfill fires
Fires in landfills, often caused by waste mismanagementTransportation emission
Diesel operated Daily vehicles produces exhaustHuman-caused emissions
Common practices like open burning of waste or agricultural residuesShort-Term PM₂.₅ Exposure Impacts

Irritation in Eyes
Redness, itching, and discomfort in your eyes
Headaches
Frequent or intense headaches.
Fatigue
Feeling unusually tired or weak.
Aggravated asthma
Increased asthma attacks and symptoms.
Breathing problems
Coughing, wheezing, and shortness of breath.Why you should care about Particulate Matter (PM₂.₅)?
Know More About PM₂.₅ Sensor