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Seoul Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Seoul

Last Updated: 2025-10-26 03:28:45 PM (Local Time)

location image
Live AQI
77(AQI-US)
Air Quality is
Moderate
pm10 :  36 µg/m³
PM2.5 :  23 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in Seoul
partly cloudy

14 °C

Partly cloudy
Humidity
Humidity82 %
Wind Speed
Wind Speed13 km/h
UV Index
UV Index2
Last Updated: 2025-10-26 03:28:45 PM (Local Time)
Map

Seoul

Major Air Pollutants

Seoul

PM2.5's Icon

Particulate Matter(PM2.5)

23µg/m³

PM10's Icon

Particulate Matter(PM10)

36µg/m³

CO's Icon

Carbon Monoxide(CO)

527ppb

SO2's Icon

Sulfur Dioxide(SO2)

2ppb

NO2's Icon

Nitrogen Dioxide(NO2)

22ppb

O3's Icon

Ozone(O3)

29ppb

Trending in South Korea

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AQI Graph

Historical Air Quality Data

Seoul

24 Hours
AQI
Seoul
AQI
.
25-10-2025Time26-10-2025
32
Min.at 8:04 PM on 25th Oct
76
Max.at 3:04 PM on 26th Oct

Want air quality data?

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Seoul, Seoul, South Korea

AQI
Year
.
AQI

Annual AQI Trends

2020
64AQI
2021
66AQI
3%
Rise
2022
65AQI
-2%
Fall
2023
66AQI
2%
Rise
2024
61AQI
-8%
Fall
2025
61AQI
0%
No Change
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
-1%
Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedMarch, 202193AQI
Least PollutedSeptember, 202134AQI

* This data analysis is from year 2020 - 2025

Seoul's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
79
24
36
14
82
Moderate
81
25
38
14
82
Moderate
69
19
31
14
82
Moderate
77
23
33
14
82
Moderate
75
22
36
14
82
Moderate
62
15
31
14
82
Moderate
81
25
46
14
82
Moderate
79
24
32
14
82
Moderate
82
26
36
14
82
Moderate
77
23
33
14
82
Moderate
73
21
34
14
82
Moderate
69
19
30
14
82
Moderate
81
25
33
14
82
Moderate
73
21
31
14
82
Moderate
71
20
31
14
82
Moderate
81
25
37
14
82
Moderate
77
23
45
14
82
Moderate
77
23
43
14
82
Moderate
84
27
39
14
82
Moderate
82
26
44
14
82

South Korea's Metro Cities

Air Quality Index

Busan City AQI

Busan

57

temp.18°C
hum.52%
Daegu City AQI

Daegu

59

temp.20°C
hum.37%
Daejeon City AQI

Daejeon

65

temp.15°C
hum.67%
Gwangju City AQI

Gwangju

60

temp.16°C
hum.77%
Incheon City AQI

Incheon

80

temp.14°C
hum.82%
Sejong City AQI

Sejong

71

temp.15°C
hum.67%
Seoul City AQI

Seoul

77

temp.14°C
hum.82%
Ulsan City AQI

Ulsan

64

temp.18°C
hum.52%

Air Quality Calendar 2025

Seoul

2025
AQI
January
1 Jan
78
2 Jan
59
3 Jan
63
4 Jan
64
5 Jan
76
6 Jan
100
7 Jan
62
8 Jan
75
9 Jan
48
10 Jan
62
11 Jan
66
12 Jan
81
13 Jan
100
14 Jan
108
15 Jan
60
16 Jan
83
17 Jan
86
18 Jan
87
19 Jan
92
20 Jan
137
21 Jan
145
22 Jan
150
23 Jan
116
24 Jan
108
25 Jan
66
26 Jan
57
27 Jan
68
28 Jan
64
29 Jan
65
30 Jan
56
31 Jan
75
February
1 Feb
84
2 Feb
77
3 Feb
57
4 Feb
54
5 Feb
46
6 Feb
56
7 Feb
52
8 Feb
50
9 Feb
52
10 Feb
60
11 Feb
84
12 Feb
80
13 Feb
58
14 Feb
102
15 Feb
62
16 Feb
120
17 Feb
52
18 Feb
69
19 Feb
50
20 Feb
58
21 Feb
57
22 Feb
63
23 Feb
58
24 Feb
61
25 Feb
59
26 Feb
71
27 Feb
60
28 Feb
89
March
1 Mar
109
2 Mar
83
3 Mar
60
4 Mar
48
5 Mar
39
6 Mar
76
7 Mar
101
8 Mar
89
9 Mar
107
10 Mar
121
11 Mar
110
12 Mar
99
13 Mar
92
14 Mar
78
15 Mar
61
16 Mar
74
17 Mar
67
18 Mar
73
19 Mar
82
20 Mar
95
21 Mar
110
22 Mar
117
23 Mar
124
24 Mar
122
25 Mar
131
26 Mar
96
27 Mar
95
28 Mar
63
29 Mar
57
30 Mar
50
31 Mar
62
April
1 Apr
84
2 Apr
83
3 Apr
78
4 Apr
80
5 Apr
59
6 Apr
69
7 Apr
75
8 Apr
78
9 Apr
76
10 Apr
81
11 Apr
91
12 Apr
69
13 Apr
63
14 Apr
48
15 Apr
59
16 Apr
67
17 Apr
73
18 Apr
86
19 Apr
52
20 Apr
63
21 Apr
55
22 Apr
46
23 Apr
41
24 Apr
68
25 Apr
64
26 Apr
59
27 Apr
48
28 Apr
60
29 Apr
70
30 Apr
61
May
1 May
64
2 May
52
3 May
50
4 May
52
5 May
52
6 May
43
7 May
57
8 May
64
9 May
51
10 May
58
11 May
77
12 May
77
13 May
77
14 May
74
15 May
71
16 May
64
17 May
51
18 May
60
19 May
63
20 May
45
21 May
49
22 May
52
23 May
63
24 May
46
25 May
53
26 May
68
27 May
84
28 May
90
29 May
82
30 May
80
31 May
87
June
1 Jun
92
2 Jun
97
3 Jun
75
4 Jun
58
5 Jun
59
6 Jun
59
7 Jun
72
8 Jun
60
9 Jun
67
10 Jun
53
11 Jun
56
12 Jun
65
13 Jun
75
14 Jun
63
15 Jun
60
16 Jun
69
17 Jun
70
18 Jun
72
19 Jun
68
20 Jun
52
21 Jun
60
22 Jun
67
23 Jun
70
24 Jun
60
25 Jun
52
26 Jun
55
27 Jun
62
28 Jun
64
29 Jun
52
30 Jun
49
July
1 Jul
45
2 Jul
43
3 Jul
50
4 Jul
51
5 Jul
50
6 Jul
54
7 Jul
68
8 Jul
64
9 Jul
57
10 Jul
51
11 Jul
49
12 Jul
48
13 Jul
60
14 Jul
50
15 Jul
43
16 Jul
50
17 Jul
39
18 Jul
41
19 Jul
34
20 Jul
38
21 Jul
37
22 Jul
37
23 Jul
38
24 Jul
49
25 Jul
58
26 Jul
50
27 Jul
47
28 Jul
64
29 Jul
69
30 Jul
62
31 Jul
61
August
1 Aug
58
2 Aug
62
3 Aug
61
4 Aug
51
5 Aug
52
6 Aug
46
7 Aug
47
8 Aug
58
9 Aug
55
10 Aug
50
11 Aug
57
12 Aug
51
13 Aug
42
14 Aug
43
15 Aug
42
16 Aug
40
17 Aug
42
18 Aug
52
19 Aug
46
20 Aug
47
21 Aug
48
22 Aug
49
23 Aug
50
24 Aug
54
25 Aug
50
26 Aug
46
27 Aug
51
28 Aug
52
29 Aug
47
30 Aug
45
31 Aug
51
September
1 Sep
42
2 Sep
50
3 Sep
52
4 Sep
38
5 Sep
38
6 Sep
42
7 Sep
43
8 Sep
49
9 Sep
54
10 Sep
51
11 Sep
51
12 Sep
50
13 Sep
41
14 Sep
44
15 Sep
47
16 Sep
44
17 Sep
38
18 Sep
30
19 Sep
32
20 Sep
27
21 Sep
25
22 Sep
27
23 Sep
26
24 Sep
31
25 Sep
40
26 Sep
62
27 Sep
49
28 Sep
41
29 Sep
59
30 Sep
63
October
1 Oct
66
2 Oct
61
3 Oct
61
4 Oct
39
5 Oct
33
6 Oct
26
7 Oct
27
8 Oct
35
9 Oct
36
10 Oct
19
11 Oct
35
12 Oct
32
13 Oct
29
14 Oct
37
15 Oct
35
16 Oct
32
17 Oct
39
18 Oct
34
19 Oct
39
20 Oct
53
21 Oct
56
22 Oct
42
23 Oct
25
24 Oct
21
25 Oct
37
26 Oct
-
27 Oct
-
28 Oct
-
29 Oct
-
30 Oct
-
31 Oct
-
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

Seoul

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Seoul

  • asthma due to air pollution in SeoulAsthma
  • heart due to air pollution in SeoulHeart Issues
  • allergy due to air pollution in SeoulAllergies
  • sinus due to air pollution in SeoulSinus
  • flu due to air pollution in SeoulCold/Flu
  • copd due to air pollution in SeoulChronic (COPD)
asthma due to air pollution in Seoul

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

South Korea

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025
World's Most PollutedCity Rankings (2024)
World's Most PollutedCountry Rankings(2024)
RankCityAQIAQI Status

Standard Value

Follow

1.

Gimpo, South Korea

90
Moderate
6xabove Standard

2.

Pyeongtaek, South Korea

87
Moderate
6xabove Standard

3.

Anseong, South Korea

84
Moderate
6xabove Standard

4.

Bucheon, South Korea

82
Moderate
5xabove Standard

5.

Incheon, South Korea

80
Moderate
5xabove Standard

6.

Kunpo, South Korea

79
Moderate
5xabove Standard

7.

Cheongju, South Korea

79
Moderate
5xabove Standard

8.

Iksan-si, South Korea

79
Moderate
5xabove Standard

9.

Osan, South Korea

78
Moderate
5xabove Standard

10.

Goyang, South Korea

78
Moderate
5xabove Standard

Last Updated: 26 Oct 2025, 06:31 AM

AQI City Rankings

Air Quality Solutions For Seoul

Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
air quality solutions for offices for Seoul

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

air quality solutions for smart-city for Seoul

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Seoul

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

air quality solutions for hotels for Seoul

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

air quality solutions for restaurants for Seoul

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

air quality solutions for rmc-plants for Seoul

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

air quality solutions for fitness-center for Seoul

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

air quality solutions for parking-lot for Seoul

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

air quality solutions for retail-stores for Seoul

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Seoul

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

air quality solutions for construction-sites for Seoul

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

air quality solutions for hospitals for Seoul

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Seoul

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

air quality solutions for banks for Seoul

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

air quality solutions for cinema for Seoul

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

air quality solutions for real-estates for Seoul

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Seoul's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for Seoul
Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store
Get it onGoogle Play
Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Connect and control your air quality devices.

Air Quality FAQs

at Seoul

Frequently Asked Questions About Air Quality

What is the current AQI level in Seoul?

The current real-time AQI level in Seoul is 77 (Moderate). This was last updated 2025-10-26 03:28:45 PM (Local Time).

When was the best AQI level in Seoul in the last 24 hours?

The best AQI level was 32 (Good) at 8:04 PM, Oct 25, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Seoul in the last 24 hours?

The worst AQI level was 76 (Moderate) at 3:04 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Seoul during last 24 hours?

The AQI levels in Seoul have been fluctuating throughout the last 24 hours. The levels have increased by highest 76 at 3:04 PM (Local Time), lowest 32 at 8:04 PM, Oct 25, 2025 (Local Time).

What actions are recommended as per the current AQI level in Seoul?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.

Recent AQI Blogs

Read the latest news

Here are some latest blogs that you can go through to find out more air pollution.

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Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

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Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

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Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor