Janghyeon Dong, Ansan, Gyeonggi, 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
Janghyeon Dong, Ansan, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Aug 2021
94AQILowest AQI recorded on
21st Aug 2024
22AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 60 of Moderate air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Janghyeon Dong, Ansan, Gyeonggi, South Korea
AQI
Day
Night
.
5 AM3rd Aug 2025
7 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
11AM3rd Aug
75AQI
Avg. Lowest Time
12AM4th Aug
53AQI
In the last 24 hours,
Janghyeon Dong's AQI reached its highest point of 75 at 11 AM during the Night, while the lowest point, 53, was recorded at 12 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Janghyeon Dong, Ansan, Gyeonggi, South Korea
JulAug
05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025535 AMAQI
5th Jul 2025536 AMAQI
5th Jul 2025547 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025449 AMAQI
5th Jul 20254510 AMAQI
5th Jul 20255511 AMAQI
5th Jul 20255412 PMAQI
5th Jul 2025531 PMAQI
5th Jul 2025562 PMAQI
5th Jul 2025563 PMAQI
5th Jul 2025564 PMAQI
5th Jul 2025545 PMAQI
5th Jul 2025546 PMAQI
5th Jul 2025547 PMAQI
5th Jul 2025528 PMAQI
5th Jul 2025529 PMAQI
5th Jul 20255210 PMAQI
5th Jul 20255211 PMAQI
6th Jul 20255212 AMAQI
6th Jul 2025521 AMAQI
6th Jul 2025522 AMAQI
6th Jul 2025523 AMAQI
6th Jul 2025524 AMAQI
27°C24/32°C
6th Jul 2025525 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025538 AMAQI
6th Jul 2025589 AMAQI
6th Jul 20256410 AMAQI
6th Jul 20256211 AMAQI
6th Jul 20255812 PMAQI
6th Jul 2025581 PMAQI
6th Jul 2025632 PMAQI
6th Jul 2025593 PMAQI
6th Jul 2025594 PMAQI
6th Jul 2025545 PMAQI
6th Jul 2025516 PMAQI
6th Jul 2025607 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025549 PMAQI
6th Jul 20255310 PMAQI
6th Jul 20255411 PMAQI
7th Jul 20255612 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025532 AMAQI
7th Jul 2025533 AMAQI
7th Jul 2025534 AMAQI
28°C24/32°C
7th Jul 2025545 AMAQI
7th Jul 2025546 AMAQI
7th Jul 2025547 AMAQI
7th Jul 2025548 AMAQI
7th Jul 2025669 AMAQI
7th Jul 20258010 AMAQI
7th Jul 20258411 AMAQI
7th Jul 202510312 PMAQI
7th Jul 20251011 PMAQI
7th Jul 20251012 PMAQI
7th Jul 2025993 PMAQI
7th Jul 20251054 PMAQI
7th Jul 2025985 PMAQI
7th Jul 2025966 PMAQI
7th Jul 2025887 PMAQI
7th Jul 2025798 PMAQI
7th Jul 2025659 PMAQI
7th Jul 20256710 PMAQI
7th Jul 20256611 PMAQI
8th Jul 20256812 AMAQI
8th Jul 2025661 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025533 AMAQI
8th Jul 2025544 AMAQI
29°C25/33°C
8th Jul 2025595 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025597 AMAQI
8th Jul 2025598 AMAQI
8th Jul 2025939 AMAQI
8th Jul 20259710 AMAQI
8th Jul 20259711 AMAQI
8th Jul 20259612 PMAQI
8th Jul 2025901 PMAQI
8th Jul 2025882 PMAQI
8th Jul 2025893 PMAQI
8th Jul 2025894 PMAQI
8th Jul 2025935 PMAQI
8th Jul 2025976 PMAQI
8th Jul 2025967 PMAQI
8th Jul 2025988 PMAQI
8th Jul 2025669 PMAQI
8th Jul 20255610 PMAQI
8th Jul 20255711 PMAQI
9th Jul 20255812 AMAQI
9th Jul 2025571 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025593 AMAQI
9th Jul 2025614 AMAQI
31°C26/37°C
9th Jul 2025655 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025657 AMAQI
9th Jul 2025658 AMAQI
9th Jul 2025609 AMAQI
9th Jul 20256210 AMAQI
9th Jul 20256211 AMAQI
9th Jul 20255812 PMAQI
9th Jul 2025691 PMAQI
9th Jul 2025652 PMAQI
9th Jul 2025643 PMAQI
9th Jul 2025604 PMAQI
9th Jul 2025605 PMAQI
9th Jul 2025596 PMAQI
9th Jul 2025617 PMAQI
9th Jul 2025768 PMAQI
9th Jul 2025649 PMAQI
9th Jul 20256810 PMAQI
9th Jul 20256911 PMAQI
10th Jul 20256912 AMAQI
10th Jul 2025701 AMAQI
10th Jul 2025692 AMAQI
10th Jul 2025603 AMAQI
10th Jul 2025604 AMAQI
31°C26/37°C
10th Jul 2025605 AMAQI
10th Jul 2025616 AMAQI
10th Jul 2025617 AMAQI
10th Jul 2025608 AMAQI
10th Jul 2025579 AMAQI
10th Jul 20255710 AMAQI
10th Jul 20254911 AMAQI
10th Jul 20255012 PMAQI
10th Jul 2025541 PMAQI
10th Jul 2025562 PMAQI
10th Jul 2025563 PMAQI
10th Jul 2025574 PMAQI
10th Jul 2025565 PMAQI
10th Jul 2025556 PMAQI
10th Jul 2025567 PMAQI
10th Jul 2025548 PMAQI
10th Jul 2025569 PMAQI
10th Jul 20255710 PMAQI
10th Jul 20255611 PMAQI
11th Jul 20255612 AMAQI
11th Jul 2025581 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025583 AMAQI
11th Jul 2025584 AMAQI
31°C27/36°C
11th Jul 2025585 AMAQI
11th Jul 2025586 AMAQI
11th Jul 2025607 AMAQI
11th Jul 2025608 AMAQI
11th Jul 2025539 AMAQI
11th Jul 20255210 AMAQI
11th Jul 20254511 AMAQI
11th Jul 20254512 PMAQI
11th Jul 2025421 PMAQI
11th Jul 2025422 PMAQI
11th Jul 2025433 PMAQI
11th Jul 2025474 PMAQI
11th Jul 2025465 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025457 PMAQI
11th Jul 2025488 PMAQI
11th Jul 2025539 PMAQI
11th Jul 20255310 PMAQI
11th Jul 20255411 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025551 AMAQI
12th Jul 2025582 AMAQI
12th Jul 2025573 AMAQI
12th Jul 2025574 AMAQI
30°C25/35°C
12th Jul 2025565 AMAQI
12th Jul 2025566 AMAQI
12th Jul 2025567 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025389 AMAQI
12th Jul 20253410 AMAQI
12th Jul 20253211 AMAQI
12th Jul 20253112 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025353 PMAQI
12th Jul 2025394 PMAQI
12th Jul 2025425 PMAQI
12th Jul 2025506 PMAQI
12th Jul 2025607 PMAQI
12th Jul 2025608 PMAQI
12th Jul 2025609 PMAQI
12th Jul 20256010 PMAQI
12th Jul 20255811 PMAQI
13th Jul 20255812 AMAQI
13th Jul 2025571 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025563 AMAQI
13th Jul 2025554 AMAQI
29°C24/34°C
13th Jul 2025545 AMAQI
13th Jul 2025546 AMAQI
13th Jul 2025547 AMAQI
13th Jul 2025548 AMAQI
13th Jul 2025629 AMAQI
13th Jul 20257010 AMAQI
13th Jul 20257311 AMAQI
13th Jul 20258012 PMAQI
13th Jul 2025771 PMAQI
13th Jul 2025752 PMAQI
13th Jul 2025723 PMAQI
13th Jul 2025714 PMAQI
13th Jul 2025775 PMAQI
13th Jul 2025746 PMAQI
13th Jul 2025767 PMAQI
13th Jul 2025728 PMAQI
13th Jul 2025649 PMAQI
13th Jul 20256410 PMAQI
13th Jul 20256111 PMAQI
14th Jul 20256012 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025562 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025564 AMAQI
26°C23/30°C
14th Jul 2025585 AMAQI
14th Jul 2025586 AMAQI
14th Jul 2025587 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025809 AMAQI
14th Jul 20258610 AMAQI
14th Jul 20258511 AMAQI
14th Jul 20258712 PMAQI
14th Jul 2025841 PMAQI
14th Jul 2025742 PMAQI
14th Jul 2025543 PMAQI
14th Jul 2025514 PMAQI
14th Jul 2025415 PMAQI
14th Jul 2025426 PMAQI
14th Jul 2025347 PMAQI
14th Jul 2025388 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 PMAQI
15th Jul 20255212 AMAQI
15th Jul 2025571 AMAQI
15th Jul 2025572 AMAQI
15th Jul 2025573 AMAQI
15th Jul 2025584 AMAQI
23°C19/29°C
15th Jul 2025615 AMAQI
15th Jul 2025616 AMAQI
15th Jul 2025607 AMAQI
15th Jul 2025608 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20253711 AMAQI
15th Jul 20254312 PMAQI
15th Jul 2025501 PMAQI
15th Jul 2025472 PMAQI
15th Jul 2025473 PMAQI
15th Jul 2025454 PMAQI
15th Jul 2025425 PMAQI
15th Jul 2025376 PMAQI
15th Jul 2025427 PMAQI
15th Jul 2025428 PMAQI
15th Jul 2025519 PMAQI
15th Jul 20255110 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025572 AMAQI
16th Jul 2025573 AMAQI
16th Jul 2025564 AMAQI
22°C20/24°C
16th Jul 2025555 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025629 AMAQI
16th Jul 20256210 AMAQI
16th Jul 20256411 AMAQI
16th Jul 20256312 PMAQI
16th Jul 2025631 PMAQI
16th Jul 2025622 PMAQI
16th Jul 2025603 PMAQI
16th Jul 2025584 PMAQI
16th Jul 2025615 PMAQI
16th Jul 2025426 PMAQI
16th Jul 2025337 PMAQI
16th Jul 2025448 PMAQI
16th Jul 2025519 PMAQI
16th Jul 20255110 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20255512 AMAQI
17th Jul 2025551 AMAQI
17th Jul 2025552 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025554 AMAQI
22°C21/25°C
17th Jul 2025565 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025329 AMAQI
17th Jul 20252610 AMAQI
17th Jul 20252311 AMAQI
17th Jul 20251512 PMAQI
17th Jul 2025261 PMAQI
17th Jul 2025272 PMAQI
17th Jul 2025283 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025346 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025348 PMAQI
17th Jul 2025499 PMAQI
17th Jul 20254710 PMAQI
17th Jul 20254611 PMAQI
18th Jul 20254612 AMAQI
18th Jul 2025531 AMAQI
18th Jul 2025552 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025544 AMAQI
23°C21/26°C
18th Jul 2025535 AMAQI
18th Jul 2025536 AMAQI
18th Jul 2025537 AMAQI
18th Jul 2025538 AMAQI
18th Jul 2025329 AMAQI
18th Jul 20252310 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20253312 PMAQI
18th Jul 2025411 PMAQI
18th Jul 2025422 PMAQI
18th Jul 2025383 PMAQI
18th Jul 2025424 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025536 PMAQI
18th Jul 2025517 PMAQI
18th Jul 2025558 PMAQI
18th Jul 2025539 PMAQI
18th Jul 20255410 PMAQI
18th Jul 20255511 PMAQI
19th Jul 20255512 AMAQI
19th Jul 2025531 AMAQI
19th Jul 2025532 AMAQI
19th Jul 2025533 AMAQI
19th Jul 2025534 AMAQI
23°C22/25°C
19th Jul 2025525 AMAQI
19th Jul 2025516 AMAQI
19th Jul 2025527 AMAQI
19th Jul 2025528 AMAQI
19th Jul 2025259 AMAQI
19th Jul 20251710 AMAQI
19th Jul 20251611 AMAQI
19th Jul 20252112 PMAQI
19th Jul 2025311 PMAQI
19th Jul 2025282 PMAQI
19th Jul 2025273 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025285 PMAQI
19th Jul 2025346 PMAQI
19th Jul 2025327 PMAQI
19th Jul 2025318 PMAQI
19th Jul 2025479 PMAQI
19th Jul 20254610 PMAQI
19th Jul 20254311 PMAQI
20th Jul 20254412 AMAQI
20th Jul 2025521 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
20th Jul 2025514 AMAQI
25°C22/28°C
20th Jul 2025485 AMAQI
20th Jul 2025496 AMAQI
20th Jul 2025487 AMAQI
20th Jul 2025488 AMAQI
20th Jul 2025399 AMAQI
20th Jul 20253010 AMAQI
20th Jul 20253811 AMAQI
20th Jul 20253512 PMAQI
20th Jul 2025381 PMAQI
20th Jul 2025382 PMAQI
20th Jul 2025393 PMAQI
20th Jul 2025384 PMAQI
20th Jul 2025345 PMAQI
20th Jul 2025386 PMAQI
20th Jul 2025487 PMAQI
20th Jul 2025458 PMAQI
20th Jul 2025499 PMAQI
20th Jul 20255110 PMAQI
20th Jul 20255311 PMAQI
21st Jul 20255412 AMAQI
21st Jul 2025521 AMAQI
21st Jul 2025502 AMAQI
21st Jul 2025513 AMAQI
21st Jul 2025504 AMAQI
27°C23/32°C
21st Jul 2025485 AMAQI
21st Jul 2025486 AMAQI
21st Jul 2025477 AMAQI
21st Jul 2025488 AMAQI
21st Jul 2025509 AMAQI
21st Jul 20255210 AMAQI
21st Jul 20255511 AMAQI
21st Jul 20254612 PMAQI
21st Jul 2025331 PMAQI
21st Jul 2025442 PMAQI
21st Jul 2025503 PMAQI
21st Jul 2025504 PMAQI
21st Jul 2025365 PMAQI
21st Jul 2025346 PMAQI
21st Jul 2025377 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254410 PMAQI
21st Jul 20254411 PMAQI
22nd Jul 20254612 AMAQI
22nd Jul 2025481 AMAQI
22nd Jul 2025502 AMAQI
22nd Jul 2025503 AMAQI
22nd Jul 2025504 AMAQI
28°C25/31°C
22nd Jul 2025485 AMAQI
22nd Jul 2025506 AMAQI
22nd Jul 2025507 AMAQI
22nd Jul 2025508 AMAQI
22nd Jul 2025469 AMAQI
22nd Jul 20254510 AMAQI
22nd Jul 20255411 AMAQI
22nd Jul 20254612 PMAQI
22nd Jul 2025531 PMAQI
22nd Jul 2025542 PMAQI
22nd Jul 2025463 PMAQI
22nd Jul 2025474 PMAQI
22nd Jul 2025385 PMAQI
22nd Jul 2025426 PMAQI
22nd Jul 2025507 PMAQI
22nd Jul 2025488 PMAQI
22nd Jul 2025529 PMAQI
22nd Jul 20254810 PMAQI
22nd Jul 20254411 PMAQI
23rd Jul 20255212 AMAQI
23rd Jul 2025531 AMAQI
23rd Jul 2025502 AMAQI
23rd Jul 2025503 AMAQI
23rd Jul 2025494 AMAQI
28°C25/32°C
23rd Jul 2025485 AMAQI
23rd Jul 2025486 AMAQI
23rd Jul 2025487 AMAQI
23rd Jul 2025478 AMAQI
23rd Jul 2025459 AMAQI
23rd Jul 20255010 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20253312 PMAQI
23rd Jul 2025501 PMAQI
23rd Jul 2025572 PMAQI
23rd Jul 2025593 PMAQI
23rd Jul 2025614 PMAQI
23rd Jul 2025675 PMAQI
23rd Jul 2025636 PMAQI
23rd Jul 2025587 PMAQI
23rd Jul 2025468 PMAQI
23rd Jul 2025469 PMAQI
23rd Jul 20254510 PMAQI
23rd Jul 20254411 PMAQI
24th Jul 20254612 AMAQI
24th Jul 2025481 AMAQI
24th Jul 2025492 AMAQI
24th Jul 2025483 AMAQI
24th Jul 2025484 AMAQI
28°C25/32°C
24th Jul 2025495 AMAQI
24th Jul 2025486 AMAQI
24th Jul 2025507 AMAQI
24th Jul 2025508 AMAQI
24th Jul 2025459 AMAQI
24th Jul 20254210 AMAQI
24th Jul 20254211 AMAQI
24th Jul 20254412 PMAQI
24th Jul 2025531 PMAQI
24th Jul 2025642 PMAQI
24th Jul 2025683 PMAQI
24th Jul 2025754 PMAQI
24th Jul 2025745 PMAQI
24th Jul 2025696 PMAQI
24th Jul 2025697 PMAQI
24th Jul 2025648 PMAQI
24th Jul 2025589 PMAQI
24th Jul 20255610 PMAQI
24th Jul 20255911 PMAQI
25th Jul 20255912 AMAQI
25th Jul 2025611 AMAQI
25th Jul 2025502 AMAQI
25th Jul 2025483 AMAQI
25th Jul 2025484 AMAQI
28°C25/32°C
25th Jul 2025495 AMAQI
25th Jul 2025496 AMAQI
25th Jul 2025507 AMAQI
25th Jul 2025508 AMAQI
25th Jul 2025649 AMAQI
25th Jul 20257610 AMAQI
25th Jul 20257311 AMAQI
25th Jul 20257612 PMAQI
25th Jul 2025741 PMAQI
25th Jul 2025762 PMAQI
25th Jul 2025833 PMAQI
25th Jul 2025824 PMAQI
25th Jul 2025925 PMAQI
25th Jul 2025886 PMAQI
25th Jul 2025867 PMAQI
25th Jul 2025738 PMAQI
25th Jul 2025609 PMAQI
25th Jul 20256010 PMAQI
25th Jul 20256211 PMAQI
26th Jul 20256012 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025523 AMAQI
26th Jul 2025534 AMAQI
30°C26/35°C
26th Jul 2025565 AMAQI
26th Jul 2025566 AMAQI
26th Jul 2025577 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025589 AMAQI
26th Jul 20255510 AMAQI
26th Jul 20255111 AMAQI
26th Jul 20254512 PMAQI
26th Jul 2025571 PMAQI
26th Jul 2025572 PMAQI
26th Jul 2025603 PMAQI
26th Jul 2025584 PMAQI
26th Jul 2025585 PMAQI
26th Jul 2025606 PMAQI
26th Jul 2025767 PMAQI
26th Jul 2025788 PMAQI
26th Jul 2025669 PMAQI
26th Jul 20256610 PMAQI
26th Jul 20256911 PMAQI
27th Jul 20256612 AMAQI
27th Jul 2025561 AMAQI
27th Jul 2025552 AMAQI
27th Jul 2025553 AMAQI
27th Jul 2025554 AMAQI
31°C28/35°C
27th Jul 2025555 AMAQI
27th Jul 2025556 AMAQI
27th Jul 2025557 AMAQI
27th Jul 2025558 AMAQI
27th Jul 2025469 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20253211 AMAQI
27th Jul 20253012 PMAQI
27th Jul 2025381 PMAQI
27th Jul 2025372 PMAQI
27th Jul 2025423 PMAQI
27th Jul 2025484 PMAQI
27th Jul 2025555 PMAQI
27th Jul 2025576 PMAQI
27th Jul 2025637 PMAQI
27th Jul 2025688 PMAQI
27th Jul 2025639 PMAQI
27th Jul 20256010 PMAQI
27th Jul 20256111 PMAQI
28th Jul 20256312 AMAQI
28th Jul 2025561 AMAQI
28th Jul 2025562 AMAQI
28th Jul 2025563 AMAQI
28th Jul 2025564 AMAQI
31°C28/35°C
28th Jul 2025545 AMAQI
28th Jul 2025546 AMAQI
28th Jul 2025547 AMAQI
28th Jul 2025548 AMAQI
28th Jul 2025879 AMAQI
28th Jul 20259810 AMAQI
28th Jul 20259211 AMAQI
28th Jul 20259012 PMAQI
28th Jul 2025721 PMAQI
28th Jul 2025712 PMAQI
28th Jul 2025773 PMAQI
28th Jul 2025804 PMAQI
28th Jul 2025815 PMAQI
28th Jul 2025826 PMAQI
28th Jul 2025837 PMAQI
28th Jul 2025798 PMAQI
28th Jul 2025699 PMAQI
28th Jul 20256510 PMAQI
28th Jul 20256411 PMAQI
29th Jul 20256412 AMAQI
29th Jul 2025581 AMAQI
29th Jul 2025562 AMAQI
29th Jul 2025573 AMAQI
29th Jul 2025584 AMAQI
30°C28/35°C
29th Jul 2025625 AMAQI
29th Jul 2025626 AMAQI
29th Jul 2025627 AMAQI
29th Jul 2025628 AMAQI
29th Jul 2025749 AMAQI
29th Jul 20257910 AMAQI
29th Jul 20258411 AMAQI
29th Jul 20259112 PMAQI
29th Jul 2025901 PMAQI
29th Jul 2025892 PMAQI
29th Jul 2025873 PMAQI
29th Jul 2025884 PMAQI
29th Jul 2025845 PMAQI
29th Jul 2025766 PMAQI
29th Jul 2025787 PMAQI
29th Jul 2025738 PMAQI
29th Jul 2025639 PMAQI
29th Jul 20256210 PMAQI
29th Jul 20256411 PMAQI
30th Jul 20256312 AMAQI
30th Jul 2025601 AMAQI
30th Jul 2025602 AMAQI
30th Jul 2025603 AMAQI
30th Jul 2025614 AMAQI
31°C27/36°C
30th Jul 2025645 AMAQI
30th Jul 2025646 AMAQI
30th Jul 2025647 AMAQI
30th Jul 2025658 AMAQI
30th Jul 2025849 AMAQI
30th Jul 20258610 AMAQI
30th Jul 20258111 AMAQI
30th Jul 20258712 PMAQI
30th Jul 2025851 PMAQI
30th Jul 2025812 PMAQI
30th Jul 2025803 PMAQI
30th Jul 2025774 PMAQI
30th Jul 2025945 PMAQI
30th Jul 20251036 PMAQI
30th Jul 2025967 PMAQI
30th Jul 2025808 PMAQI
30th Jul 2025709 PMAQI
30th Jul 20257010 PMAQI
30th Jul 20256911 PMAQI
31st Jul 20256512 AMAQI
31st Jul 2025611 AMAQI
31st Jul 2025622 AMAQI
31st Jul 2025613 AMAQI
31st Jul 2025614 AMAQI
31°C28/36°C
31st Jul 2025615 AMAQI
31st Jul 2025616 AMAQI
31st Jul 2025617 AMAQI
31st Jul 2025618 AMAQI
31st Jul 2025619 AMAQI
31st Jul 20256110 AMAQI
31st Jul 20257011 AMAQI
31st Jul 20256512 PMAQI
31st Jul 2025691 PMAQI
31st Jul 2025792 PMAQI
31st Jul 2025823 PMAQI
31st Jul 2025884 PMAQI
31st Jul 2025815 PMAQI
31st Jul 2025826 PMAQI
31st Jul 2025857 PMAQI
31st Jul 2025718 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255410 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255512 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025574 AMAQI
30°C27/34°C
1st Aug 2025565 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025577 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025589 AMAQI
1st Aug 20256210 AMAQI
1st Aug 20255411 AMAQI
1st Aug 20255612 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025733 PMAQI
1st Aug 2025644 PMAQI
1st Aug 2025775 PMAQI
1st Aug 2025616 PMAQI
1st Aug 2025627 PMAQI
1st Aug 2025618 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20256111 PMAQI
2nd Aug 20255812 AMAQI
2nd Aug 2025541 AMAQI
2nd Aug 2025542 AMAQI
2nd Aug 2025553 AMAQI
2nd Aug 2025564 AMAQI
30°C27/34°C
2nd Aug 2025555 AMAQI
2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025769 AMAQI
2nd Aug 20258010 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20258212 PMAQI
2nd Aug 2025801 PMAQI
2nd Aug 2025612 PMAQI
2nd Aug 2025573 PMAQI
2nd Aug 2025604 PMAQI
2nd Aug 2025585 PMAQI
2nd Aug 2025656 PMAQI
2nd Aug 2025627 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025551 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025553 AMAQI
3rd Aug 2025584 AMAQI
30°C27/34°C
3rd Aug 2025595 AMAQI
3rd Aug 2025586 AMAQI
3rd Aug 2025597 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025689 AMAQI
3rd Aug 20257210 AMAQI
3rd Aug 20257511 AMAQI
3rd Aug 20256412 PMAQI
3rd Aug 2025681 PMAQI
3rd Aug 2025712 PMAQI
3rd Aug 2025703 PMAQI
3rd Aug 2025664 PMAQI
3rd Aug 2025695 PMAQI
3rd Aug 2025666 PMAQI
3rd Aug 2025647 PMAQI
3rd Aug 2025588 PMAQI
3rd Aug 2025599 PMAQI
3rd Aug 20255810 PMAQI
3rd Aug 20255311 PMAQI
4th Aug 20255312 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025572 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025584 AMAQI
--°C/°C
4th Aug 2025595 AMAQI
5 AM12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
58AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
58AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 58), while the lowest AQI was between 5 AM to 7 PM (Avg. 58).
Night time
Avg. Highest Time
8 PM - 11 PM
57AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 4 AM
55AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 57), while the lowest AQI was between 12 AM to 4 AM (Avg. 55).
2025 Days Vs Air Quality
Janghyeon Dong, Ansan, Gyeonggi, South Korea
2025
22%
47
71%
153
7%
14
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
47 DaysModerate
153 DaysPoor
14 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 22%
Health Risk Level:
Very high
In 2025, 22% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Janghyeon Dong, Ansan, Gyeonggi, 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.
1st January 2025
69AQI
69AQI
2nd January 2025
51AQI
51AQI
3rd January 2025
54AQI
54AQI
4th January 2025
56AQI
56AQI
5th January 2025
63AQI
63AQI
6th January 2025
93AQI
93AQI
7th January 2025
49AQI
49AQI
8th January 2025
63AQI
63AQI
9th January 2025
39AQI
39AQI
10th January 2025
46AQI
46AQI
11th January 2025
49AQI
49AQI
12th January 2025
69AQI
69AQI
13th January 2025
81AQI
81AQI
14th January 2025
93AQI
93AQI
15th January 2025
50AQI
50AQI
16th January 2025
70AQI
70AQI
17th January 2025
71AQI
71AQI
18th January 2025
73AQI
73AQI
19th January 2025
74AQI
74AQI
20th January 2025
127AQI
127AQI
21st January 2025
126AQI
126AQI
22nd January 2025
146AQI
146AQI
23rd January 2025
102AQI
102AQI
24th January 2025
106AQI
106AQI
25th January 2025
63AQI
63AQI
26th January 2025
54AQI
54AQI
27th January 2025
64AQI
64AQI
28th January 2025
54AQI
54AQI
29th January 2025
53AQI
53AQI
30th January 2025
43AQI
43AQI
31st January 2025
68AQI
68AQI
1st February 2025
77AQI
77AQI
2nd February 2025
79AQI
79AQI
3rd February 2025
51AQI
51AQI
4th February 2025
46AQI
46AQI
5th February 2025
37AQI
37AQI
6th February 2025
49AQI
49AQI
7th February 2025
39AQI
39AQI
8th February 2025
36AQI
36AQI
9th February 2025
39AQI
39AQI
10th February 2025
49AQI
49AQI
11th February 2025
64AQI
64AQI
12th February 2025
72AQI
72AQI
13th February 2025
50AQI
50AQI
14th February 2025
87AQI
87AQI
15th February 2025
57AQI
57AQI
16th February 2025
109AQI
109AQI
17th February 2025
47AQI
47AQI
18th February 2025
56AQI
56AQI
19th February 2025
42AQI
42AQI
20th February 2025
48AQI
48AQI
21st February 2025
47AQI
47AQI
22nd February 2025
51AQI
51AQI
23rd February 2025
46AQI
46AQI
24th February 2025
50AQI
50AQI
25th February 2025
49AQI
49AQI
26th February 2025
66AQI
66AQI
27th February 2025
57AQI
57AQI
28th February 2025
78AQI
78AQI
1st March 2025
95AQI
95AQI
2nd March 2025
78AQI
78AQI
3rd March 2025
56AQI
56AQI
4th March 2025
46AQI
46AQI
5th March 2025
35AQI
35AQI
6th March 2025
71AQI
71AQI
7th March 2025
90AQI
90AQI
8th March 2025
84AQI
84AQI
9th March 2025
101AQI
101AQI
10th March 2025
112AQI
112AQI
11th March 2025
106AQI
106AQI
12th March 2025
101AQI
101AQI
13th March 2025
96AQI
96AQI
14th March 2025
76AQI
76AQI
15th March 2025
57AQI
57AQI
16th March 2025
70AQI
70AQI
17th March 2025
62AQI
62AQI
18th March 2025
71AQI
71AQI
19th March 2025
76AQI
76AQI
20th March 2025
87AQI
87AQI
21st March 2025
99AQI
99AQI
22nd March 2025
106AQI
106AQI
23rd March 2025
109AQI
109AQI
24th March 2025
111AQI
111AQI
25th March 2025
127AQI
127AQI
26th March 2025
95AQI
95AQI
27th March 2025
94AQI
94AQI
28th March 2025
56AQI
56AQI
29th March 2025
45AQI
45AQI
30th March 2025
37AQI
37AQI
31st March 2025
58AQI
58AQI
1st April 2025
71AQI
71AQI
2nd April 2025
78AQI
78AQI
3rd April 2025
81AQI
81AQI
4th April 2025
77AQI
77AQI
5th April 2025
67AQI
67AQI
6th April 2025
64AQI
64AQI
7th April 2025
73AQI
73AQI
8th April 2025
76AQI
76AQI
9th April 2025
73AQI
73AQI
10th April 2025
80AQI
80AQI
11th April 2025
90AQI
90AQI
12th April 2025
66AQI
66AQI
13th April 2025
61AQI
61AQI
14th April 2025
42AQI
42AQI
15th April 2025
56AQI
56AQI
16th April 2025
62AQI
62AQI
17th April 2025
70AQI
70AQI
18th April 2025
85AQI
85AQI
19th April 2025
52AQI
52AQI
20th April 2025
68AQI
68AQI
21st April 2025
55AQI
55AQI
22nd April 2025
49AQI
49AQI
23rd April 2025
36AQI
36AQI
24th April 2025
65AQI
65AQI
25th April 2025
57AQI
57AQI
26th April 2025
55AQI
55AQI
27th April 2025
40AQI
40AQI
28th April 2025
59AQI
59AQI
29th April 2025
66AQI
66AQI
30th April 2025
58AQI
58AQI
1st May 2025
61AQI
61AQI
2nd May 2025
50AQI
50AQI
3rd May 2025
49AQI
49AQI
4th May 2025
48AQI
48AQI
5th May 2025
53AQI
53AQI
6th May 2025
40AQI
40AQI
7th May 2025
55AQI
55AQI
8th May 2025
60AQI
60AQI
9th May 2025
51AQI
51AQI
10th May 2025
64AQI
64AQI
11th May 2025
75AQI
75AQI
12th May 2025
76AQI
76AQI
13th May 2025
75AQI
75AQI
14th May 2025
73AQI
73AQI
15th May 2025
69AQI
69AQI
16th May 2025
62AQI
62AQI
17th May 2025
56AQI
56AQI
18th May 2025
56AQI
56AQI
19th May 2025
62AQI
62AQI
20th May 2025
41AQI
41AQI
21st May 2025
54AQI
54AQI
22nd May 2025
55AQI
55AQI
23rd May 2025
66AQI
66AQI
24th May 2025
49AQI
49AQI
25th May 2025
48AQI
48AQI
26th May 2025
70AQI
70AQI
27th May 2025
85AQI
85AQI
28th May 2025
94AQI
94AQI
29th May 2025
83AQI
83AQI
30th May 2025
91AQI
91AQI
31st May 2025
91AQI
91AQI
1st June 2025
89AQI
89AQI
2nd June 2025
98AQI
98AQI
3rd June 2025
78AQI
78AQI
4th June 2025
61AQI
61AQI
5th June 2025
60AQI
60AQI
6th June 2025
59AQI
59AQI
7th June 2025
69AQI
69AQI
8th June 2025
57AQI
57AQI
9th June 2025
63AQI
63AQI
10th June 2025
53AQI
53AQI
11th June 2025
57AQI
57AQI
12th June 2025
69AQI
69AQI
13th June 2025
79AQI
79AQI
14th June 2025
68AQI
68AQI
15th June 2025
60AQI
60AQI
16th June 2025
72AQI
72AQI
17th June 2025
70AQI
70AQI
18th June 2025
71AQI
71AQI
19th June 2025
68AQI
68AQI
20th June 2025
49AQI
49AQI
21st June 2025
63AQI
63AQI
22nd June 2025
71AQI
71AQI
23rd June 2025
79AQI
79AQI
24th June 2025
66AQI
66AQI
25th June 2025
55AQI
55AQI
26th June 2025
60AQI
60AQI
27th June 2025
72AQI
72AQI
28th June 2025
67AQI
67AQI
29th June 2025
53AQI
53AQI
30th June 2025
49AQI
49AQI
1st July 2025
46AQI
46AQI
2nd July 2025
49AQI
49AQI
3rd July 2025
55AQI
55AQI
4th July 2025
54AQI
54AQI
5th July 2025
53AQI
53AQI
6th July 2025
55AQI
55AQI
7th July 2025
73AQI
73AQI
8th July 2025
76AQI
76AQI
9th July 2025
63AQI
63AQI
10th July 2025
58AQI
58AQI
11th July 2025
52AQI
52AQI
12th July 2025
51AQI
51AQI
13th July 2025
65AQI
65AQI
14th July 2025
58AQI
58AQI
15th July 2025
49AQI
49AQI
16th July 2025
54AQI
54AQI
17th July 2025
42AQI
42AQI
18th July 2025
47AQI
47AQI
19th July 2025
40AQI
40AQI
20th July 2025
45AQI
45AQI
21st July 2025
45AQI
45AQI
22nd July 2025
48AQI
48AQI
23rd July 2025
51AQI
51AQI
24th July 2025
55AQI
55AQI
25th July 2025
66AQI
66AQI
26th July 2025
59AQI
59AQI
27th July 2025
53AQI
53AQI
28th July 2025
70AQI
70AQI
29th July 2025
71AQI
71AQI
30th July 2025
75AQI
75AQI
31st July 2025
67AQI
67AQI
1st August 2025
60AQI
60AQI
2nd August 2025
60AQI
60AQI
72AQI
56AQI
81AQI
64AQI
63AQI
66AQI
56AQI
60AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202566AQI
6
20
5
15
12
1
4
19
8
4
26
7
24
2
28
9
22
2
47
153
14
Highest AQI recorded in
March81AQI
Lowest AQI recorded in
July56AQI
202462AQI
11
14
6
10
14
4
1
7
21
1
2
3
22
5
8
23
2
25
3
20
10
1
8
23
21
9
14
15
2
8
21
1
13
18
125
215
23
3
Highest AQI recorded in
April77AQI
Lowest AQI recorded in
September43AQI
202369AQI
11
11
7
2
2
19
6
1
5
13
12
1
4
21
4
1
4
24
3
2
26
2
7
22
2
9
22
15
14
1
12
17
2
12
15
2
12
16
3
95
220
44
5
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
September52AQI
202270AQI
23
5
2
3
12
3
3
4
19
8
3
8
6
4
24
3
10
19
1
2
18
1
1
15
11
2
17
10
4
8
13
8
1
10
20
1
77
177
42
6
Highest AQI recorded in
February88AQI
Lowest AQI recorded in
August37AQI
202175AQI
8
18
5
5
13
7
3
2
13
10
5
1
3
23
4
6
17
6
2
2
21
7
7
22
2
12
19
19
11
7
22
2
7
17
4
2
9
15
6
1
87
211
53
11
1
2
Highest AQI recorded in
March108AQI
Lowest AQI recorded in
September50AQI
202066AQI
1
2
9
20
2
12
19
16
14
11
17
3
7
15
8
7
13
10
1
63
100
23
1
Highest AQI recorded in
December82AQI
Lowest AQI recorded in
September52AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
75AQILeast Polluted Year Recorded
2024(Avg.)
62AQIJanghyeon Dong's annual 2025 AQI (66) shows an average percentage change of -3.9% (improved AQI) compared to previous years: 2020 (66), 2021 (75), 2022 (70), 2023 (69), 2024 (62).
