Air quality in Suwon

Air quality index (AQI) and PM2.5 air pollution in Suwon

Last update at (local time)

11.9K people follow this city

  • The profile image of follower
  • The profile image of follower
  • The profile image of follower
  • The profile image of follower
  • The profile image of follower
IQAir map with AQI colorful pins


8 Stations operated by

2 Contributors

Join the movement!

Get a monitor and contributor to air quality data in your city.

Find out more about contributors and data sources


What is the current weather in Suwon?

Weather icon
WeatherClear sky
Wind3.4 mp/h
Pressure30 Hg

live aqi city ranking

Real-time South Korea city ranking

#cityUS AQI
1 Hwaseong, Gyeonggi-do


2 Siheung, Gyeonggi-do


3 Pyeongtaek, Gyeonggi-do


4 Dangjin, Chungcheongnam-do


5 Ansan, Gyeonggi-do


6 Seosan, Chungcheongnam-do


7 Boryeong, Chungcheongnam-do


8 Taean, Chungcheongnam-do


9 Anyang, Gyeonggi-do


10 Incheon, Incheon


(local time)


live Suwon aqi ranking

Real-time Suwon air quality ranking

#stationUS AQI
1 Gosaek-dong


2 Sinpung-dong


3 Dongsuwon


4 Ingye-dong


5 Cheoncheon-dong


6 Yeongtong-dong


7 Homaesil


8 Gwanggyo-dong


(local time)


#1 Air Quality App

Free iOS and Android air quality app

AirVisual App, Free iOS and Android air quality app



live AQI index

Human face indicating AQI level


What is the current air quality in Suwon?

Air pollution levelAir quality indexMain pollutant
Moderate 79 US AQIPM2.5



PM2.5 concentration in Suwon is currently 5.1 times the WHO annual air quality guideline value

Health Recommendations

What is the current air quality in Suwon?

A man cycling icon
Sensitive groups should reduce outdoor exercise
An open window icon
Close your windows to avoid dirty outdoor air
An IQAir mask icon
Sensitive groups should wear a mask outdoors
An IQAir purifier icon
Sensitive groups should run an air purifier


Suwon air quality index (AQI) forecast

DayPollution levelWeatherTemperatureWind
Saturday, Apr 20

Moderate 54 AQI US

Human face indicating AQI level
Weather icon
62.6° 55.4°
Wind rotating 82 degree 11.2 mp/h
Sunday, Apr 21

Good 40 AQI US

Human face indicating AQI level
Weather icon
64.4° 57.2°
Wind rotating 70 degree 8.9 mp/h
Monday, Apr 22

Moderate 63 AQI US

Human face indicating AQI level
Weather icon
71.6° 57.2°
Wind rotating 98 degree 6.7 mp/h

Moderate 79 AQI US

Human face indicating AQI level
Weather icon
71.6° 57.2°
Wind rotating 98 degree 6.7 mp/h
Wednesday, Apr 24

Moderate 58 AQI US

Human face indicating AQI level
Weather icon 90%
73.4° 55.4°
Wind rotating 152 degree 8.9 mp/h
Thursday, Apr 25

Moderate 57 AQI US

Human face indicating AQI level
Weather icon 100%
59° 53.6°
Wind rotating 268 degree 11.2 mp/h
Friday, Apr 26

Moderate 81 AQI US

Human face indicating AQI level
Weather icon
71.6° 50°
Wind rotating 278 degree 6.7 mp/h
Saturday, Apr 27

Moderate 79 AQI US

Human face indicating AQI level
Weather icon
77° 57.2°
Wind rotating 274 degree 6.7 mp/h
Sunday, Apr 28

Moderate 78 AQI US

Human face indicating AQI level
Weather icon
78.8° 57.2°
Wind rotating 284 degree 6.7 mp/h
Monday, Apr 29

Moderate 83 AQI US

Human face indicating AQI level
Weather icon
77° 62.6°
Wind rotating 275 degree 6.7 mp/h

Interested in hourly forecast? Get the app


Are pollution levels bad in Suwon?

Suwon is a city located in South Korea, Gyeonggi province. It is also the capital and largest city of said province, with some 1.24 million people living there. It lies around 30km away from Seoul, and has a prominent history of having started out as a small settlement and growing into a significant industrial, cultural and economic center, with industry giants such as Samsung electronics having their headquarters there.

Being an industrial hub, as well as having such close proximity to the capital city of Seoul, naturally a city such as Suwon would have some form of elevated pollution levels associated with these features, as is common in many cities near to the capital, many people will be making their daily commutes in and out, with their personal vehicles all contributing to a variety of different pollutants in the air.

In 2019, Suwon came in with a PM2.5 reading of 25.5 μg/m³, placing it into the ‘moderate’ pollution bracket, one that requires a PM2.5 reading of anywhere between 12.1 to 35.4 μg/m³ to be classified as such. Suwon came in on the somewhat higher end of this group rating, an air quality reading that may have detrimental effects on many of its inhabitants, with its PM2.5 number placing it in 598th place out of all cities ranked worldwide, as well as 50th place out of all cities ranked in Korea. This is indicative that Suwon is indeed affected by some less than perfect levels of air pollution, with the reasons as to why being explained in short.

What are the main causes of air pollution in Suwon?

As Suwon, and indeed the country as a whole has seen its economy and industry grow massively over the past few decades, the increase in demand for industrial and general products, homes and infrastructure to support a growing population has naturally lead to a decline in air quality.

One of the main causes of air pollution in Suwon would be the use of vehicles, with a large amount of personal ones such as cars and motorbikes all making their daily commutes back and forth across the city, putting out large amounts of pollutants such as nitrogen dioxide (NO2) and sulfur dioxide (SO2), both of which can cause damage to the environment as well as triggering respiratory conditions such as aggravated asthma.

Other causes of pollution would be industrial fumes, with large amounts of factories, industrial areas, production plants and the like all putting out large amounts of fumes and smoke into the air, mostly coming from the combustion of fossil fuels such as coal, which provides the power to the facilities.

As well as this, novel chemicals that are related to whatever item is being manufactured are put into the atmosphere, including plastic fumes, microplastics, fine particulate matter and even toxic metals such as lead and mercury.

Another form of pollution which has a somewhat contentious nature, is that of pollution from Mongolia and China blowing across the sea and permeating the air over Korea. This includes both sandstorms and related PM2.5 and PM10 arising from these natural events, as well as large amounts of smoke from factories and industrial areas across the sea, although as mentioned, this is subject to speculation as to how much actually comes from overseas and how much is purely produced locally. This subject matter aside, the two largest local causes of pollution in Suwon are from vehicles and industrial zones.

When is pollution at its worst in Suwon?

Observing the data taken in 2019 as an accurate measure of realistic pollution levels (due to 2020 seeing mass lockdowns occurring due to the covid-19 pandemic, thus skewing the data), there emerges a pattern in when Suwon’s air quality is at its worst.

The air quality starts to decline towards the end of the year, when the winter months start to rear their head. In November the PM2.5 levels rise to 21.2 μg/m³, coming from 16.2 μg/m³ in the month prior. This then continues upwards to 28.3 μg/m³ in December, before the worst levels of pollution are reached in the beginning months of the following year (still using 2019 as a reference here).

January through to March are when the pollution levels are at their absolute worst, with PM2.5 readings of 40.8 μg/m³, 37 μg/m³ and 47.3 μg/m³ respectively, putting them all in the ‘unhealthy for sensitive groups bracket (35.5 to 55.4 μg/m³ required). As the name implies, the air quality during these months would be detrimental to large portions of the population, including the elderly, young children and those with preexisting health conditions. With these numbers, it can be seen that March is the most polluted month in Suwon, followed closely by January and February.

When is air quality at its cleanest in Suwon?

Moving directly on from the previous question, in opposition to the worst months, air quality starts to rapidly improve after the high seen in March, with a reading of 19.4 μg/m³ in April, a considerable drop.

From here until October is when the air quality is at its best (albeit with a sudden spike in May, which is seen in all cities near Seoul). The cleanest month of the entire year was in September, with a PM2.5 reading of 13.3 μg/m³, only 1.3 units away from moving to the ‘good’ ratings bracket.

What are some health issues with polluted air in Suwon?

Although chances of negative health issues rise accordingly with the PM2.5 readings, or overall levels of air pollution, it should be noted that any reading over the WHO's target goal of 10 μg/m³ or less has the chance to cause unwanted symptoms and health issues.

Some of these would include short term ones such as irritation to the mucous membranes, with the eyes, nose, ears and even the skin being affected. Others include damage to the lung tissue and premature aging of the respiratory tract, not only reducing life expectancy and raising cancer rates, but making those affected more susceptible to further respiratory conditions and complications such as pneumonia, emphysema, bronchitis and aggravated forms of asthma.

Suwon air quality data attribution


Your cart is empty

Connect With IQAir

Sign up for our newsletter