Country Background

Cheonggyecheon, Seoul, Seoul, South Korea Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Cheonggyecheon, Seoul, Seoul, South Korea

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
25th Aug 2024
90AQI
Lowest AQI recorded on
8th Aug 2023
18AQI


Same Day Analysis (24th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 52 of Moderate air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 24th Aug - 25th Aug 2025

Cheonggyecheon, Seoul, Seoul, South Korea

AQI
Day
Night
.

5 AM24th Aug 2025

7 PM

4 AM25th Aug 2025

Day time
Avg. Highest Time
1PM24th Aug

79AQI

Avg. Lowest Time
8AM24th Aug

52AQI

Night time
Avg. Highest Time
11PM24th Aug

64AQI

Avg. Lowest Time
1AM25th Aug

51AQI

In the last 24 hours,

Cheonggyecheon's AQI reached its highest point of 79 at 1 PM during the Day, while the lowest point, 51, was recorded at 1 AM during the Night between 24th Aug and 25th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Cheonggyecheon, Seoul, Seoul, South Korea

JulAug
26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th
Day
Night
26th Jul 2025555 AMAQI
26th Jul 2025556 AMAQI
26th Jul 2025547 AMAQI
26th Jul 2025558 AMAQI
26th Jul 2025589 AMAQI
26th Jul 20255610 AMAQI
26th Jul 20255411 AMAQI
26th Jul 20255412 PMAQI
26th Jul 2025521 PMAQI
26th Jul 2025502 PMAQI
26th Jul 2025593 PMAQI
26th Jul 2025584 PMAQI
26th Jul 2025515 PMAQI
26th Jul 2025506 PMAQI
26th Jul 2025537 PMAQI
26th Jul 2025518 PMAQI
26th Jul 2025499 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20255611 PMAQI
27th Jul 20255712 AMAQI
27th Jul 2025531 AMAQI
27th Jul 2025522 AMAQI
27th Jul 2025523 AMAQI
27th Jul 2025524 AMAQI

32°C27/38°C

27th Jul 2025525 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025537 AMAQI
27th Jul 2025528 AMAQI
27th Jul 2025519 AMAQI
27th Jul 20254710 AMAQI
27th Jul 20253411 AMAQI
27th Jul 20253512 PMAQI
27th Jul 2025391 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025463 PMAQI
27th Jul 2025404 PMAQI
27th Jul 2025365 PMAQI
27th Jul 2025536 PMAQI
27th Jul 2025557 PMAQI
27th Jul 2025578 PMAQI
27th Jul 2025559 PMAQI
27th Jul 20255510 PMAQI
27th Jul 20256011 PMAQI
28th Jul 20255912 AMAQI
28th Jul 2025531 AMAQI
28th Jul 2025532 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025534 AMAQI

32°C27/38°C

28th Jul 2025525 AMAQI
28th Jul 2025526 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025528 AMAQI
28th Jul 2025709 AMAQI
28th Jul 20257810 AMAQI
28th Jul 20258111 AMAQI
28th Jul 20257912 PMAQI
28th Jul 2025831 PMAQI
28th Jul 2025902 PMAQI
28th Jul 2025983 PMAQI
28th Jul 2025874 PMAQI
28th Jul 2025825 PMAQI
28th Jul 2025726 PMAQI
28th Jul 2025767 PMAQI
28th Jul 2025788 PMAQI
28th Jul 2025669 PMAQI
28th Jul 20256810 PMAQI
28th Jul 20256811 PMAQI
29th Jul 20256212 AMAQI
29th Jul 2025541 AMAQI
29th Jul 2025532 AMAQI
29th Jul 2025533 AMAQI
29th Jul 2025554 AMAQI

32°C27/37°C

29th Jul 2025595 AMAQI
29th Jul 2025596 AMAQI
29th Jul 2025597 AMAQI
29th Jul 2025598 AMAQI
29th Jul 2025609 AMAQI
29th Jul 20256210 AMAQI
29th Jul 20257311 AMAQI
29th Jul 20258312 PMAQI
29th Jul 2025851 PMAQI
29th Jul 2025912 PMAQI
29th Jul 2025903 PMAQI
29th Jul 2025984 PMAQI
29th Jul 2025945 PMAQI
29th Jul 2025946 PMAQI
29th Jul 2025917 PMAQI
29th Jul 2025828 PMAQI
29th Jul 2025679 PMAQI
29th Jul 20256610 PMAQI
29th Jul 20256411 PMAQI
30th Jul 20256112 AMAQI
30th Jul 2025571 AMAQI
30th Jul 2025562 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025584 AMAQI

32°C27/38°C

30th Jul 2025625 AMAQI
30th Jul 2025616 AMAQI
30th Jul 2025617 AMAQI
30th Jul 2025618 AMAQI
30th Jul 2025769 AMAQI
30th Jul 20258010 AMAQI
30th Jul 20258011 AMAQI
30th Jul 20258512 PMAQI
30th Jul 2025791 PMAQI
30th Jul 2025762 PMAQI
30th Jul 2025713 PMAQI
30th Jul 2025714 PMAQI
30th Jul 2025655 PMAQI
30th Jul 2025626 PMAQI
30th Jul 2025597 PMAQI
30th Jul 2025598 PMAQI
30th Jul 2025589 PMAQI
30th Jul 20256210 PMAQI
30th Jul 20256411 PMAQI
31st Jul 20256212 AMAQI
31st Jul 2025591 AMAQI
31st Jul 2025582 AMAQI
31st Jul 2025593 AMAQI
31st Jul 2025594 AMAQI

32°C27/37°C

31st Jul 2025595 AMAQI
31st Jul 2025596 AMAQI
31st Jul 2025597 AMAQI
31st Jul 2025598 AMAQI
31st Jul 2025599 AMAQI
31st Jul 20255910 AMAQI
31st Jul 20256811 AMAQI
31st Jul 20257312 PMAQI
31st Jul 2025761 PMAQI
31st Jul 2025762 PMAQI
31st Jul 2025743 PMAQI
31st Jul 2025744 PMAQI
31st Jul 2025735 PMAQI
31st Jul 2025706 PMAQI
31st Jul 2025647 PMAQI
31st Jul 2025628 PMAQI
31st Jul 2025539 PMAQI
31st Jul 20255410 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255612 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025564 AMAQI

31°C28/35°C

1st Aug 2025565 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025557 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025639 AMAQI
1st Aug 20256510 AMAQI
1st Aug 20256411 AMAQI
1st Aug 20256012 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025582 PMAQI
1st Aug 2025643 PMAQI
1st Aug 2025584 PMAQI
1st Aug 2025645 PMAQI
1st Aug 2025596 PMAQI
1st Aug 2025597 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025609 PMAQI
1st Aug 20255910 PMAQI
1st Aug 20255911 PMAQI
2nd Aug 20255712 AMAQI
2nd Aug 2025551 AMAQI
2nd Aug 2025552 AMAQI
2nd Aug 2025553 AMAQI
2nd Aug 2025564 AMAQI

31°C27/36°C

2nd Aug 2025565 AMAQI
2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025769 AMAQI
2nd Aug 20258810 AMAQI
2nd Aug 202510211 AMAQI
2nd Aug 20258912 PMAQI
2nd Aug 2025911 PMAQI
2nd Aug 2025682 PMAQI
2nd Aug 2025623 PMAQI
2nd Aug 2025724 PMAQI
2nd Aug 2025665 PMAQI
2nd Aug 2025756 PMAQI
2nd Aug 2025787 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025629 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256211 PMAQI
3rd Aug 20255812 AMAQI
3rd Aug 2025561 AMAQI
3rd Aug 2025572 AMAQI
3rd Aug 2025583 AMAQI
3rd Aug 2025584 AMAQI

31°C27/36°C

3rd Aug 2025585 AMAQI
3rd Aug 2025586 AMAQI
3rd Aug 2025577 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025659 AMAQI
3rd Aug 20257810 AMAQI
3rd Aug 20257711 AMAQI
3rd Aug 20257212 PMAQI
3rd Aug 2025721 PMAQI
3rd Aug 2025722 PMAQI
3rd Aug 2025723 PMAQI
3rd Aug 2025684 PMAQI
3rd Aug 2025685 PMAQI
3rd Aug 2025706 PMAQI
3rd Aug 2025727 PMAQI
3rd Aug 2025628 PMAQI
3rd Aug 2025629 PMAQI
3rd Aug 20255910 PMAQI
3rd Aug 20255611 PMAQI
4th Aug 20255612 AMAQI
4th Aug 2025551 AMAQI
4th Aug 2025582 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025594 AMAQI

28°C25/31°C

4th Aug 2025585 AMAQI
4th Aug 2025596 AMAQI
4th Aug 2025597 AMAQI
4th Aug 2025608 AMAQI
4th Aug 2025549 AMAQI
4th Aug 20255410 AMAQI
4th Aug 20255711 AMAQI
4th Aug 20254812 PMAQI
4th Aug 2025581 PMAQI
4th Aug 2025662 PMAQI
4th Aug 2025503 PMAQI
4th Aug 2025544 PMAQI
4th Aug 2025525 PMAQI
4th Aug 2025546 PMAQI
4th Aug 2025577 PMAQI
4th Aug 2025568 PMAQI
4th Aug 2025609 PMAQI
4th Aug 20256110 PMAQI
4th Aug 20256011 PMAQI
5th Aug 20255812 AMAQI
5th Aug 2025551 AMAQI
5th Aug 2025572 AMAQI
5th Aug 2025583 AMAQI
5th Aug 2025564 AMAQI

28°C23/35°C

5th Aug 2025565 AMAQI
5th Aug 2025566 AMAQI
5th Aug 2025567 AMAQI
5th Aug 2025558 AMAQI
5th Aug 2025589 AMAQI
5th Aug 20255810 AMAQI
5th Aug 20256411 AMAQI
5th Aug 20256712 PMAQI
5th Aug 2025691 PMAQI
5th Aug 2025682 PMAQI
5th Aug 2025583 PMAQI
5th Aug 2025544 PMAQI
5th Aug 2025525 PMAQI
5th Aug 2025536 PMAQI
5th Aug 2025607 PMAQI
5th Aug 2025618 PMAQI
5th Aug 2025589 PMAQI
5th Aug 20255610 PMAQI
5th Aug 20255611 PMAQI
6th Aug 20255212 AMAQI
6th Aug 2025551 AMAQI
6th Aug 2025552 AMAQI
6th Aug 2025553 AMAQI
6th Aug 2025554 AMAQI

29°C25/33°C

6th Aug 2025565 AMAQI
6th Aug 2025556 AMAQI
6th Aug 2025567 AMAQI
6th Aug 2025568 AMAQI
6th Aug 2025469 AMAQI
6th Aug 20255310 AMAQI
6th Aug 20255211 AMAQI
6th Aug 20255012 PMAQI
6th Aug 2025561 PMAQI
6th Aug 2025762 PMAQI
6th Aug 2025723 PMAQI
6th Aug 2025504 PMAQI
6th Aug 2025485 PMAQI
6th Aug 2025446 PMAQI
6th Aug 2025497 PMAQI
6th Aug 2025518 PMAQI
6th Aug 2025459 PMAQI
6th Aug 20254610 PMAQI
6th Aug 20254911 PMAQI
7th Aug 20254612 AMAQI
7th Aug 2025531 AMAQI
7th Aug 2025542 AMAQI
7th Aug 2025543 AMAQI
7th Aug 2025544 AMAQI

27°C24/29°C

7th Aug 2025535 AMAQI
7th Aug 2025536 AMAQI
7th Aug 2025537 AMAQI
7th Aug 2025548 AMAQI
7th Aug 2025559 AMAQI
7th Aug 20254910 AMAQI
7th Aug 20255911 AMAQI
7th Aug 20255612 PMAQI
7th Aug 2025541 PMAQI
7th Aug 2025542 PMAQI
7th Aug 2025553 PMAQI
7th Aug 2025544 PMAQI
7th Aug 2025525 PMAQI
7th Aug 2025426 PMAQI
7th Aug 2025407 PMAQI
7th Aug 2025518 PMAQI
7th Aug 2025539 PMAQI
7th Aug 20255110 PMAQI
7th Aug 20254911 PMAQI
8th Aug 20255212 AMAQI
8th Aug 2025531 AMAQI
8th Aug 2025522 AMAQI
8th Aug 2025523 AMAQI
8th Aug 2025534 AMAQI

27°C23/32°C

8th Aug 2025535 AMAQI
8th Aug 2025536 AMAQI
8th Aug 2025537 AMAQI
8th Aug 2025538 AMAQI
8th Aug 2025549 AMAQI
8th Aug 20255710 AMAQI
8th Aug 20255911 AMAQI
8th Aug 20256412 PMAQI
8th Aug 2025661 PMAQI
8th Aug 2025722 PMAQI
8th Aug 2025723 PMAQI
8th Aug 2025794 PMAQI
8th Aug 2025845 PMAQI
8th Aug 2025736 PMAQI
8th Aug 2025717 PMAQI
8th Aug 2025698 PMAQI
8th Aug 2025599 PMAQI
8th Aug 20255610 PMAQI
8th Aug 20255311 PMAQI
9th Aug 20255312 AMAQI
9th Aug 2025521 AMAQI
9th Aug 2025522 AMAQI
9th Aug 2025523 AMAQI
9th Aug 2025534 AMAQI

27°C23/33°C

9th Aug 2025555 AMAQI
9th Aug 2025556 AMAQI
9th Aug 2025557 AMAQI
9th Aug 2025558 AMAQI
9th Aug 2025609 AMAQI
9th Aug 20256810 AMAQI
9th Aug 20256611 AMAQI
9th Aug 20256712 PMAQI
9th Aug 2025641 PMAQI
9th Aug 2025562 PMAQI
9th Aug 2025513 PMAQI
9th Aug 2025544 PMAQI
9th Aug 2025555 PMAQI
9th Aug 2025556 PMAQI
9th Aug 2025577 PMAQI
9th Aug 2025598 PMAQI
9th Aug 2025579 PMAQI
9th Aug 20256010 PMAQI
9th Aug 20255711 PMAQI
10th Aug 20255912 AMAQI
10th Aug 2025531 AMAQI
10th Aug 2025542 AMAQI
10th Aug 2025533 AMAQI
10th Aug 2025544 AMAQI

25°C23/27°C

10th Aug 2025555 AMAQI
10th Aug 2025556 AMAQI
10th Aug 2025557 AMAQI
10th Aug 2025558 AMAQI
10th Aug 2025529 AMAQI
10th Aug 20254810 AMAQI
10th Aug 20254811 AMAQI
10th Aug 20255212 PMAQI
10th Aug 2025451 PMAQI
10th Aug 2025442 PMAQI
10th Aug 2025473 PMAQI
10th Aug 2025504 PMAQI
10th Aug 2025465 PMAQI
10th Aug 2025466 PMAQI
10th Aug 2025477 PMAQI
10th Aug 2025528 PMAQI
10th Aug 2025539 PMAQI
10th Aug 20255610 PMAQI
10th Aug 20255911 PMAQI
11th Aug 20255812 AMAQI
11th Aug 2025541 AMAQI
11th Aug 2025542 AMAQI
11th Aug 2025543 AMAQI
11th Aug 2025544 AMAQI

27°C22/34°C

11th Aug 2025535 AMAQI
11th Aug 2025536 AMAQI
11th Aug 2025537 AMAQI
11th Aug 2025538 AMAQI
11th Aug 2025619 AMAQI
11th Aug 20256410 AMAQI
11th Aug 20256511 AMAQI
11th Aug 20256312 PMAQI
11th Aug 2025641 PMAQI
11th Aug 2025682 PMAQI
11th Aug 2025643 PMAQI
11th Aug 2025654 PMAQI
11th Aug 2025605 PMAQI
11th Aug 2025596 PMAQI
11th Aug 2025607 PMAQI
11th Aug 2025608 PMAQI
11th Aug 2025599 PMAQI
11th Aug 20255910 PMAQI
11th Aug 20255911 PMAQI
12th Aug 20255612 AMAQI
12th Aug 2025541 AMAQI
12th Aug 2025552 AMAQI
12th Aug 2025543 AMAQI
12th Aug 2025564 AMAQI

27°C24/31°C

12th Aug 2025565 AMAQI
12th Aug 2025556 AMAQI
12th Aug 2025567 AMAQI
12th Aug 2025578 AMAQI
12th Aug 2025589 AMAQI
12th Aug 20256010 AMAQI
12th Aug 20255111 AMAQI
12th Aug 20255612 PMAQI
12th Aug 2025581 PMAQI
12th Aug 2025602 PMAQI
12th Aug 2025573 PMAQI
12th Aug 2025524 PMAQI
12th Aug 2025505 PMAQI
12th Aug 2025406 PMAQI
12th Aug 2025507 PMAQI
12th Aug 2025518 PMAQI
12th Aug 2025539 PMAQI
12th Aug 20255110 PMAQI
12th Aug 20254911 PMAQI
13th Aug 20254812 AMAQI
13th Aug 2025541 AMAQI
13th Aug 2025542 AMAQI
13th Aug 2025543 AMAQI
13th Aug 2025554 AMAQI

28°C22/33°C

13th Aug 2025545 AMAQI
13th Aug 2025546 AMAQI
13th Aug 2025547 AMAQI
13th Aug 2025548 AMAQI
13th Aug 2025409 AMAQI
13th Aug 20254210 AMAQI
13th Aug 20255811 AMAQI
13th Aug 20255412 PMAQI
13th Aug 2025491 PMAQI
13th Aug 2025542 PMAQI
13th Aug 2025583 PMAQI
13th Aug 2025464 PMAQI
13th Aug 2025525 PMAQI
13th Aug 2025356 PMAQI
13th Aug 2025467 PMAQI
13th Aug 2025498 PMAQI
13th Aug 2025509 PMAQI
13th Aug 20255010 PMAQI
13th Aug 20255111 PMAQI
14th Aug 20255412 AMAQI
14th Aug 2025531 AMAQI
14th Aug 2025562 AMAQI
14th Aug 2025543 AMAQI
14th Aug 2025524 AMAQI

24°C23/25°C

14th Aug 2025515 AMAQI
14th Aug 2025526 AMAQI
14th Aug 2025517 AMAQI
14th Aug 2025528 AMAQI
14th Aug 2025429 AMAQI
14th Aug 20255210 AMAQI
14th Aug 20254811 AMAQI
14th Aug 20254312 PMAQI
14th Aug 2025531 PMAQI
14th Aug 2025542 PMAQI
14th Aug 2025513 PMAQI
14th Aug 2025494 PMAQI
14th Aug 2025405 PMAQI
14th Aug 2025546 PMAQI
14th Aug 2025517 PMAQI
14th Aug 2025478 PMAQI
14th Aug 2025529 PMAQI
14th Aug 20255110 PMAQI
14th Aug 20255411 PMAQI
15th Aug 20255212 AMAQI
15th Aug 2025521 AMAQI
15th Aug 2025502 AMAQI
15th Aug 2025533 AMAQI
15th Aug 2025524 AMAQI

25°C24/29°C

15th Aug 2025535 AMAQI
15th Aug 2025526 AMAQI
15th Aug 2025517 AMAQI
15th Aug 2025508 AMAQI
15th Aug 2025589 AMAQI
15th Aug 20255710 AMAQI
15th Aug 20255311 AMAQI
15th Aug 20255712 PMAQI
15th Aug 2025581 PMAQI
15th Aug 2025482 PMAQI
15th Aug 2025543 PMAQI
15th Aug 2025564 PMAQI
15th Aug 2025445 PMAQI
15th Aug 2025416 PMAQI
15th Aug 2025457 PMAQI
15th Aug 2025438 PMAQI
15th Aug 2025449 PMAQI
15th Aug 20254710 PMAQI
15th Aug 20255011 PMAQI
16th Aug 20254412 AMAQI
16th Aug 2025481 AMAQI
16th Aug 2025472 AMAQI
16th Aug 2025483 AMAQI
16th Aug 2025504 AMAQI

27°C23/31°C

16th Aug 2025505 AMAQI
16th Aug 2025496 AMAQI
16th Aug 2025507 AMAQI
16th Aug 2025508 AMAQI
16th Aug 2025439 AMAQI
16th Aug 20255010 AMAQI
16th Aug 20254411 AMAQI
16th Aug 20254812 PMAQI
16th Aug 2025591 PMAQI
16th Aug 2025522 PMAQI
16th Aug 2025543 PMAQI
16th Aug 2025484 PMAQI
16th Aug 2025505 PMAQI
16th Aug 2025386 PMAQI
16th Aug 2025387 PMAQI
16th Aug 2025448 PMAQI
16th Aug 2025469 PMAQI
16th Aug 20254810 PMAQI
16th Aug 20254911 PMAQI
17th Aug 20255012 AMAQI
17th Aug 2025461 AMAQI
17th Aug 2025452 AMAQI
17th Aug 2025463 AMAQI
17th Aug 2025484 AMAQI

27°C24/31°C

17th Aug 2025495 AMAQI
17th Aug 2025486 AMAQI
17th Aug 2025487 AMAQI
17th Aug 2025488 AMAQI
17th Aug 2025439 AMAQI
17th Aug 20253610 AMAQI
17th Aug 20254611 AMAQI
17th Aug 20254512 PMAQI
17th Aug 2025511 PMAQI
17th Aug 2025582 PMAQI
17th Aug 2025563 PMAQI
17th Aug 2025574 PMAQI
17th Aug 2025565 PMAQI
17th Aug 2025536 PMAQI
17th Aug 2025487 PMAQI
17th Aug 2025448 PMAQI
17th Aug 2025509 PMAQI
17th Aug 20254810 PMAQI
17th Aug 20255011 PMAQI
18th Aug 20255112 AMAQI
18th Aug 2025471 AMAQI
18th Aug 2025442 AMAQI
18th Aug 2025453 AMAQI
18th Aug 2025444 AMAQI

27°C24/31°C

18th Aug 2025475 AMAQI
18th Aug 2025476 AMAQI
18th Aug 2025467 AMAQI
18th Aug 2025468 AMAQI
18th Aug 2025579 AMAQI
18th Aug 20256310 AMAQI
18th Aug 20257011 AMAQI
18th Aug 20256312 PMAQI
18th Aug 2025741 PMAQI
18th Aug 2025692 PMAQI
18th Aug 2025683 PMAQI
18th Aug 2025644 PMAQI
18th Aug 2025665 PMAQI
18th Aug 2025606 PMAQI
18th Aug 2025607 PMAQI
18th Aug 2025568 PMAQI
18th Aug 2025559 PMAQI
18th Aug 20255610 PMAQI
18th Aug 20255311 PMAQI
19th Aug 20255312 AMAQI
19th Aug 2025511 AMAQI
19th Aug 2025472 AMAQI
19th Aug 2025433 AMAQI
19th Aug 2025504 AMAQI

28°C25/32°C

19th Aug 2025505 AMAQI
19th Aug 2025526 AMAQI
19th Aug 2025507 AMAQI
19th Aug 2025528 AMAQI
19th Aug 2025529 AMAQI
19th Aug 20256010 AMAQI
19th Aug 20254211 AMAQI
19th Aug 20255712 PMAQI
19th Aug 2025521 PMAQI
19th Aug 2025542 PMAQI
19th Aug 2025543 PMAQI
19th Aug 2025584 PMAQI
19th Aug 2025545 PMAQI
19th Aug 2025556 PMAQI
19th Aug 2025547 PMAQI
19th Aug 2025488 PMAQI
19th Aug 2025509 PMAQI
19th Aug 20254610 PMAQI
19th Aug 20254511 PMAQI
20th Aug 20255012 AMAQI
20th Aug 2025501 AMAQI
20th Aug 2025512 AMAQI
20th Aug 2025493 AMAQI
20th Aug 2025484 AMAQI

28°C24/32°C

20th Aug 2025495 AMAQI
20th Aug 2025486 AMAQI
20th Aug 2025497 AMAQI
20th Aug 2025508 AMAQI
20th Aug 2025409 AMAQI
20th Aug 20254410 AMAQI
20th Aug 20254911 AMAQI
20th Aug 20255712 PMAQI
20th Aug 2025551 PMAQI
20th Aug 2025452 PMAQI
20th Aug 2025563 PMAQI
20th Aug 2025604 PMAQI
20th Aug 2025445 PMAQI
20th Aug 2025546 PMAQI
20th Aug 2025577 PMAQI
20th Aug 2025568 PMAQI
20th Aug 2025539 PMAQI
20th Aug 20255210 PMAQI
20th Aug 20255211 PMAQI
21st Aug 20255112 AMAQI
21st Aug 2025471 AMAQI
21st Aug 2025502 AMAQI
21st Aug 2025503 AMAQI
21st Aug 2025504 AMAQI

28°C24/32°C

21st Aug 2025505 AMAQI
21st Aug 2025496 AMAQI
21st Aug 2025507 AMAQI
21st Aug 2025488 AMAQI
21st Aug 2025629 AMAQI
21st Aug 20255910 AMAQI
21st Aug 20256311 AMAQI
21st Aug 20256212 PMAQI
21st Aug 2025621 PMAQI
21st Aug 2025582 PMAQI
21st Aug 2025553 PMAQI
21st Aug 2025504 PMAQI
21st Aug 2025485 PMAQI
21st Aug 2025446 PMAQI
21st Aug 2025427 PMAQI
21st Aug 2025508 PMAQI
21st Aug 2025499 PMAQI
21st Aug 20255610 PMAQI
21st Aug 20255011 PMAQI
22nd Aug 20255012 AMAQI
22nd Aug 2025481 AMAQI
22nd Aug 2025502 AMAQI
22nd Aug 2025503 AMAQI
22nd Aug 2025524 AMAQI

29°C25/33°C

22nd Aug 2025535 AMAQI
22nd Aug 2025526 AMAQI
22nd Aug 2025527 AMAQI
22nd Aug 2025528 AMAQI
22nd Aug 2025569 AMAQI
22nd Aug 20255810 AMAQI
22nd Aug 20256211 AMAQI
22nd Aug 20255012 PMAQI
22nd Aug 2025651 PMAQI
22nd Aug 2025612 PMAQI
22nd Aug 2025573 PMAQI
22nd Aug 2025604 PMAQI
22nd Aug 2025685 PMAQI
22nd Aug 2025636 PMAQI
22nd Aug 2025587 PMAQI
22nd Aug 2025538 PMAQI
22nd Aug 2025529 PMAQI
22nd Aug 20254810 PMAQI
22nd Aug 20255211 PMAQI
23rd Aug 20255112 AMAQI
23rd Aug 2025491 AMAQI
23rd Aug 2025502 AMAQI
23rd Aug 2025503 AMAQI
23rd Aug 2025524 AMAQI

29°C25/33°C

23rd Aug 2025535 AMAQI
23rd Aug 2025536 AMAQI
23rd Aug 2025537 AMAQI
23rd Aug 2025528 AMAQI
23rd Aug 2025469 AMAQI
23rd Aug 20253810 AMAQI
23rd Aug 20255211 AMAQI
23rd Aug 20255812 PMAQI
23rd Aug 2025621 PMAQI
23rd Aug 2025582 PMAQI
23rd Aug 2025573 PMAQI
23rd Aug 2025594 PMAQI
23rd Aug 2025485 PMAQI
23rd Aug 2025516 PMAQI
23rd Aug 2025537 PMAQI
23rd Aug 2025528 PMAQI
23rd Aug 2025509 PMAQI
23rd Aug 20255410 PMAQI
23rd Aug 20255411 PMAQI
24th Aug 20255312 AMAQI
24th Aug 2025531 AMAQI
24th Aug 2025512 AMAQI
24th Aug 2025513 AMAQI
24th Aug 2025524 AMAQI

29°C25/33°C

24th Aug 2025525 AMAQI
24th Aug 2025526 AMAQI
24th Aug 2025527 AMAQI
24th Aug 2025528 AMAQI
24th Aug 2025579 AMAQI
24th Aug 20255810 AMAQI
24th Aug 20257111 AMAQI
24th Aug 20257812 PMAQI
24th Aug 2025791 PMAQI
24th Aug 2025722 PMAQI
24th Aug 2025643 PMAQI
24th Aug 2025614 PMAQI
24th Aug 2025585 PMAQI
24th Aug 2025546 PMAQI
24th Aug 2025567 PMAQI
24th Aug 2025598 PMAQI
24th Aug 2025569 PMAQI
24th Aug 20255810 PMAQI
24th Aug 20256411 PMAQI
25th Aug 20255812 AMAQI
25th Aug 2025511 AMAQI
25th Aug 2025522 AMAQI
25th Aug 2025523 AMAQI
25th Aug 2025534 AMAQI

30°C26/34°C

25th Aug 2025555 AMAQI
5 AM
25th Aug 2025546 AMAQI
25th Aug 2025547 AMAQI
25th Aug 2025548 AMAQI
25th Aug 2025599 AMAQI
25th Aug 20254810 AMAQI
12 PM
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
1 PM - 3 PM

62AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
5 AM - 8 AM

54AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 3 PM (Avg. 62), while the lowest AQI was between 5 AM to 8 AM (Avg. 54).
Night time
Avg. Highest Time
8 PM - 11 PM

55AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
1 AM - 4 AM

52AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 55), while the lowest AQI was between 1 AM to 4 AM (Avg. 52).

2025 Days Vs Air Quality

Cheonggyecheon, Seoul, Seoul, South Korea

2025

10%

23

81%

191

9%

21

0.4%

1

Total number of days with different AQI categories in last 237 days in 2025 (128 days remaining)

Good
23 Days
Moderate
191 Days
Poor
21 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 10%

Health Risk Level:

Extreme

In 2025, 10% of 237 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.

Annual Air Quality Insights

Cheonggyecheon, Seoul, Seoul, South Korea

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
78AQI
2nd January 2025
61AQI
3rd January 2025
64AQI
4th January 2025
66AQI
5th January 2025
76AQI
6th January 2025
102AQI
7th January 2025
64AQI
8th January 2025
79AQI
9th January 2025
53AQI
10th January 2025
65AQI
11th January 2025
68AQI
12th January 2025
82AQI
13th January 2025
104AQI
14th January 2025
109AQI
15th January 2025
62AQI
16th January 2025
83AQI
17th January 2025
90AQI
18th January 2025
90AQI
19th January 2025
94AQI
20th January 2025
139AQI
21st January 2025
148AQI
22nd January 2025
152AQI
23rd January 2025
121AQI
24th January 2025
109AQI
25th January 2025
69AQI
26th January 2025
58AQI
27th January 2025
69AQI
28th January 2025
66AQI
29th January 2025
66AQI
30th January 2025
59AQI
31st January 2025
76AQI
1st February 2025
85AQI
2nd February 2025
77AQI
3rd February 2025
59AQI
4th February 2025
56AQI
5th February 2025
51AQI
6th February 2025
59AQI
7th February 2025
52AQI
8th February 2025
53AQI
9th February 2025
55AQI
10th February 2025
62AQI
11th February 2025
89AQI
12th February 2025
82AQI
13th February 2025
61AQI
14th February 2025
103AQI
15th February 2025
64AQI
16th February 2025
120AQI
17th February 2025
55AQI
18th February 2025
69AQI
19th February 2025
51AQI
20th February 2025
59AQI
21st February 2025
58AQI
22nd February 2025
64AQI
23rd February 2025
58AQI
24th February 2025
64AQI
25th February 2025
60AQI
26th February 2025
73AQI
27th February 2025
61AQI
28th February 2025
90AQI
1st March 2025
114AQI
2nd March 2025
84AQI
3rd March 2025
62AQI
4th March 2025
48AQI
5th March 2025
40AQI
6th March 2025
78AQI
7th March 2025
103AQI
8th March 2025
91AQI
9th March 2025
108AQI
10th March 2025
126AQI
11th March 2025
113AQI
12th March 2025
102AQI
13th March 2025
95AQI
14th March 2025
81AQI
15th March 2025
65AQI
16th March 2025
77AQI
17th March 2025
70AQI
18th March 2025
74AQI
19th March 2025
84AQI
20th March 2025
96AQI
21st March 2025
111AQI
22nd March 2025
118AQI
23rd March 2025
126AQI
24th March 2025
121AQI
25th March 2025
134AQI
26th March 2025
97AQI
27th March 2025
96AQI
28th March 2025
67AQI
29th March 2025
63AQI
30th March 2025
53AQI
31st March 2025
65AQI
1st April 2025
86AQI
2nd April 2025
86AQI
3rd April 2025
80AQI
4th April 2025
81AQI
5th April 2025
61AQI
6th April 2025
69AQI
7th April 2025
76AQI
8th April 2025
77AQI
9th April 2025
77AQI
10th April 2025
82AQI
11th April 2025
94AQI
12th April 2025
72AQI
13th April 2025
65AQI
14th April 2025
51AQI
15th April 2025
61AQI
16th April 2025
68AQI
17th April 2025
74AQI
18th April 2025
87AQI
19th April 2025
53AQI
20th April 2025
65AQI
21st April 2025
58AQI
22nd April 2025
47AQI
23rd April 2025
44AQI
24th April 2025
69AQI
25th April 2025
66AQI
26th April 2025
59AQI
27th April 2025
49AQI
28th April 2025
61AQI
29th April 2025
72AQI
30th April 2025
64AQI
1st May 2025
67AQI
2nd May 2025
54AQI
3rd May 2025
52AQI
4th May 2025
53AQI
5th May 2025
52AQI
6th May 2025
44AQI
7th May 2025
57AQI
8th May 2025
64AQI
9th May 2025
54AQI
10th May 2025
59AQI
11th May 2025
77AQI
12th May 2025
78AQI
13th May 2025
78AQI
14th May 2025
76AQI
15th May 2025
73AQI
16th May 2025
70AQI
17th May 2025
55AQI
18th May 2025
62AQI
19th May 2025
64AQI
20th May 2025
50AQI
21st May 2025
53AQI
22nd May 2025
55AQI
23rd May 2025
65AQI
24th May 2025
49AQI
25th May 2025
55AQI
26th May 2025
70AQI
27th May 2025
85AQI
28th May 2025
94AQI
29th May 2025
84AQI
30th May 2025
84AQI
31st May 2025
91AQI
1st June 2025
95AQI
2nd June 2025
102AQI
3rd June 2025
78AQI
4th June 2025
62AQI
5th June 2025
62AQI
6th June 2025
62AQI
7th June 2025
73AQI
8th June 2025
62AQI
9th June 2025
69AQI
10th June 2025
58AQI
11th June 2025
59AQI
12th June 2025
66AQI
13th June 2025
76AQI
14th June 2025
66AQI
15th June 2025
65AQI
16th June 2025
70AQI
17th June 2025
71AQI
18th June 2025
72AQI
19th June 2025
69AQI
20th June 2025
59AQI
21st June 2025
63AQI
22nd June 2025
70AQI
23rd June 2025
72AQI
24th June 2025
63AQI
25th June 2025
58AQI
26th June 2025
59AQI
27th June 2025
63AQI
28th June 2025
65AQI
29th June 2025
55AQI
30th June 2025
52AQI
1st July 2025
49AQI
2nd July 2025
47AQI
3rd July 2025
52AQI
4th July 2025
53AQI
5th July 2025
52AQI
6th July 2025
55AQI
7th July 2025
66AQI
8th July 2025
63AQI
9th July 2025
57AQI
10th July 2025
54AQI
11th July 2025
52AQI
12th July 2025
50AQI
13th July 2025
60AQI
14th July 2025
53AQI
15th July 2025
47AQI
16th July 2025
54AQI
17th July 2025
43AQI
18th July 2025
45AQI
19th July 2025
36AQI
20th July 2025
40AQI
21st July 2025
40AQI
22nd July 2025
40AQI
23rd July 2025
41AQI
24th July 2025
53AQI
25th July 2025
63AQI
26th July 2025
52AQI
27th July 2025
50AQI
28th July 2025
68AQI
29th July 2025
71AQI
30th July 2025
65AQI
31st July 2025
63AQI
1st August 2025
58AQI
2nd August 2025
66AQI
3rd August 2025
64AQI
4th August 2025
57AQI
5th August 2025
58AQI
6th August 2025
53AQI
7th August 2025
52AQI
8th August 2025
61AQI
9th August 2025
57AQI
10th August 2025
52AQI
11th August 2025
59AQI
12th August 2025
53AQI
13th August 2025
51AQI
14th August 2025
51AQI
15th August 2025
50AQI
16th August 2025
48AQI
17th August 2025
49AQI
18th August 2025
56AQI
19th August 2025
51AQI
20th August 2025
51AQI
21st August 2025
52AQI
22nd August 2025
55AQI
23rd August 2025
52AQI
24th August 2025
52AQI
25th August 2025
26th August 2025
27th August 2025
28th August 2025
29th August 2025
30th August 2025
31st August 2025
1st September 2025
2nd September 2025
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

85AQI

68AQI

89AQI

68AQI

65AQI

67AQI

53AQI

55AQI


No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202569AQI

23
7
1
26
2
2
18
11
3
27
3
28
29
1
12
19
3
21
23
191
21
1

Highest AQI recorded in

March

89AQI


Lowest AQI recorded in

July

53AQI


202460AQI

11
14
6
9
16
4
7
20
3
1
4
24
2
11
19
1
8
21
1
23
7
1
8
23
23
7
12
19
8
22
5
25
1
129
217
19
1

Highest AQI recorded in

January

72AQI


Lowest AQI recorded in

September

40AQI


202368AQI

6
18
6
1
2
19
6
1
2
14
14
1
6
18
5
1
4
27
6
24
10
19
2
13
18
18
12
11
19
1
10
17
2
10
14
7
98
219
43
4

Highest AQI recorded in

March

95AQI


Lowest AQI recorded in

September

48AQI


202266AQI

22
6
2
15
5
1
7
17
7
7
19
3
1
9
20
2
14
15
1
5
18
1
16
11
1
15
16
6
19
4
1
7
22
2
87
194
31
5

Highest AQI recorded in

February

87AQI


Lowest AQI recorded in

August

27AQI


202171AQI

1
24
5
2
15
8
3
2
17
6
6
2
24
4
6
21
2
1
1
2
24
4
8
22
1
16
15
25
5
16
15
7
16
5
2
8
17
6
95
215
41
11
1
1

Highest AQI recorded in

March

99AQI


Lowest AQI recorded in

September

34AQI


202078AQI

2
9
2
1
17
3
2
13
3
1
27
2
7
21
3
2
24
5
11
19
25
6
19
8
3
20
10
1
26
194
42
4

Highest AQI recorded in

November

96AQI


Lowest AQI recorded in

September

57AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
78AQI
Least Polluted Year Recorded
2024(Avg.)
60AQI


Cheonggyecheon's annual 2025 AQI (69) shows an average percentage change of 1.5% (worsened AQI) compared to previous years: 2020 (78), 2021 (71), 2022 (66), 2023 (68), 2024 (60).