Siheung, 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
Siheung, Ansan, Gyeonggi, South Korea
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Aug 2023
86AQILowest AQI recorded on
21st Aug 2024
20AQISame Day Analysis (4th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 51 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Siheung, Ansan, Gyeonggi, South Korea
AQI
Day
Night
.
5 AM5th Aug 2025
7 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM5th Aug
58AQI
Avg. Lowest Time
6PM5th Aug
37AQI
In the last 24 hours,
Siheung's AQI reached its highest point of 58 at 12 PM during the Night, while the lowest point, 37, was recorded at 6 PM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Siheung, Ansan, Gyeonggi, South Korea
JulAug
07th - 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 - 05th05th - 06th06th
Day
Night
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025537 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025649 AMAQI
7th Jul 20257410 AMAQI
7th Jul 20257611 AMAQI
7th Jul 202510112 PMAQI
7th Jul 2025891 PMAQI
7th Jul 2025942 PMAQI
7th Jul 2025923 PMAQI
7th Jul 2025914 PMAQI
7th Jul 2025905 PMAQI
7th Jul 2025906 PMAQI
7th Jul 2025837 PMAQI
7th Jul 2025748 PMAQI
7th Jul 2025609 PMAQI
7th Jul 20256010 PMAQI
7th Jul 20256211 PMAQI
8th Jul 20256112 AMAQI
8th Jul 2025611 AMAQI
8th Jul 2025582 AMAQI
8th Jul 2025533 AMAQI
8th Jul 2025544 AMAQI
29°C25/33°C
8th Jul 2025565 AMAQI
8th Jul 2025566 AMAQI
8th Jul 2025567 AMAQI
8th Jul 2025568 AMAQI
8th Jul 2025829 AMAQI
8th Jul 20258810 AMAQI
8th Jul 20259311 AMAQI
8th Jul 20259012 PMAQI
8th Jul 2025831 PMAQI
8th Jul 2025802 PMAQI
8th Jul 2025823 PMAQI
8th Jul 2025834 PMAQI
8th Jul 2025855 PMAQI
8th Jul 2025866 PMAQI
8th Jul 2025807 PMAQI
8th Jul 2025828 PMAQI
8th Jul 2025649 PMAQI
8th Jul 20255610 PMAQI
8th Jul 20255611 PMAQI
9th Jul 20255712 AMAQI
9th Jul 2025571 AMAQI
9th Jul 2025582 AMAQI
9th Jul 2025583 AMAQI
9th Jul 2025604 AMAQI
31°C26/37°C
9th Jul 2025635 AMAQI
9th Jul 2025636 AMAQI
9th Jul 2025637 AMAQI
9th Jul 2025638 AMAQI
9th Jul 2025599 AMAQI
9th Jul 20256110 AMAQI
9th Jul 20256411 AMAQI
9th Jul 20255912 PMAQI
9th Jul 2025601 PMAQI
9th Jul 2025622 PMAQI
9th Jul 2025613 PMAQI
9th Jul 2025574 PMAQI
9th Jul 2025565 PMAQI
9th Jul 2025556 PMAQI
9th Jul 2025567 PMAQI
9th Jul 2025728 PMAQI
9th Jul 2025629 PMAQI
9th Jul 20256310 PMAQI
9th Jul 20256211 PMAQI
10th Jul 20256412 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025642 AMAQI
10th Jul 2025593 AMAQI
10th Jul 2025594 AMAQI
31°C26/37°C
10th Jul 2025605 AMAQI
10th Jul 2025606 AMAQI
10th Jul 2025607 AMAQI
10th Jul 2025608 AMAQI
10th Jul 2025539 AMAQI
10th Jul 20255210 AMAQI
10th Jul 20254511 AMAQI
10th Jul 20254212 PMAQI
10th Jul 2025541 PMAQI
10th Jul 2025542 PMAQI
10th Jul 2025543 PMAQI
10th Jul 2025554 PMAQI
10th Jul 2025555 PMAQI
10th Jul 2025546 PMAQI
10th Jul 2025557 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 2025618 AMAQI
11th Jul 2025459 AMAQI
11th Jul 20253810 AMAQI
11th Jul 20253711 AMAQI
11th Jul 20253112 PMAQI
11th Jul 2025431 PMAQI
11th Jul 2025412 PMAQI
11th Jul 2025423 PMAQI
11th Jul 2025444 PMAQI
11th Jul 2025435 PMAQI
11th Jul 2025436 PMAQI
11th Jul 2025437 PMAQI
11th Jul 2025468 PMAQI
11th Jul 2025539 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255411 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025551 AMAQI
12th Jul 2025572 AMAQI
12th Jul 2025573 AMAQI
12th Jul 2025574 AMAQI
30°C25/35°C
12th Jul 2025565 AMAQI
12th Jul 2025556 AMAQI
12th Jul 2025557 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025339 AMAQI
12th Jul 20252610 AMAQI
12th Jul 20252411 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025393 PMAQI
12th Jul 2025404 PMAQI
12th Jul 2025425 PMAQI
12th Jul 2025466 PMAQI
12th Jul 2025547 PMAQI
12th Jul 2025618 PMAQI
12th Jul 2025569 PMAQI
12th Jul 20255610 PMAQI
12th Jul 20255611 PMAQI
13th Jul 20255612 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025553 AMAQI
13th Jul 2025554 AMAQI
29°C24/34°C
13th Jul 2025545 AMAQI
13th Jul 2025546 AMAQI
13th Jul 2025547 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025609 AMAQI
13th Jul 20256910 AMAQI
13th Jul 20256911 AMAQI
13th Jul 20257312 PMAQI
13th Jul 2025691 PMAQI
13th Jul 2025672 PMAQI
13th Jul 2025683 PMAQI
13th Jul 2025694 PMAQI
13th Jul 2025725 PMAQI
13th Jul 2025716 PMAQI
13th Jul 2025707 PMAQI
13th Jul 2025678 PMAQI
13th Jul 2025609 PMAQI
13th Jul 20256010 PMAQI
13th Jul 20255911 PMAQI
14th Jul 20255812 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025562 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025564 AMAQI
26°C23/30°C
14th Jul 2025575 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025769 AMAQI
14th Jul 20258210 AMAQI
14th Jul 20258511 AMAQI
14th Jul 20258712 PMAQI
14th Jul 2025711 PMAQI
14th Jul 2025622 PMAQI
14th Jul 2025543 PMAQI
14th Jul 2025534 PMAQI
14th Jul 2025465 PMAQI
14th Jul 2025426 PMAQI
14th Jul 2025377 PMAQI
14th Jul 2025438 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255410 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025571 AMAQI
15th Jul 2025572 AMAQI
15th Jul 2025573 AMAQI
15th Jul 2025584 AMAQI
23°C19/29°C
15th Jul 2025595 AMAQI
15th Jul 2025596 AMAQI
15th Jul 2025597 AMAQI
15th Jul 2025608 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20253611 AMAQI
15th Jul 20254112 PMAQI
15th Jul 2025441 PMAQI
15th Jul 2025402 PMAQI
15th Jul 2025403 PMAQI
15th Jul 2025404 PMAQI
15th Jul 2025385 PMAQI
15th Jul 2025386 PMAQI
15th Jul 2025397 PMAQI
15th Jul 2025428 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025553 AMAQI
16th Jul 2025564 AMAQI
22°C20/24°C
16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025589 AMAQI
16th Jul 20256110 AMAQI
16th Jul 20256011 AMAQI
16th Jul 20256012 PMAQI
16th Jul 2025621 PMAQI
16th Jul 2025582 PMAQI
16th Jul 2025583 PMAQI
16th Jul 2025544 PMAQI
16th Jul 2025565 PMAQI
16th Jul 2025466 PMAQI
16th Jul 2025387 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025529 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255412 AMAQI
17th Jul 2025541 AMAQI
17th Jul 2025552 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025554 AMAQI
22°C21/25°C
17th Jul 2025555 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025558 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20251810 AMAQI
17th Jul 20252311 AMAQI
17th Jul 20251512 PMAQI
17th Jul 2025301 PMAQI
17th Jul 2025322 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025334 PMAQI
17th Jul 2025405 PMAQI
17th Jul 2025416 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025348 PMAQI
17th Jul 2025519 PMAQI
17th Jul 20255210 PMAQI
17th Jul 20255211 PMAQI
18th Jul 20255212 AMAQI
18th Jul 2025531 AMAQI
18th Jul 2025552 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025544 AMAQI
23°C21/26°C
18th Jul 2025545 AMAQI
18th Jul 2025536 AMAQI
18th Jul 2025547 AMAQI
18th Jul 2025548 AMAQI
18th Jul 2025279 AMAQI
18th Jul 20252110 AMAQI
18th Jul 20252111 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025361 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025394 PMAQI
18th Jul 2025375 PMAQI
18th Jul 2025476 PMAQI
18th Jul 2025467 PMAQI
18th Jul 2025528 PMAQI
18th Jul 2025539 PMAQI
18th Jul 20255310 PMAQI
18th Jul 20255411 PMAQI
19th Jul 20255412 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 2025526 AMAQI
19th Jul 2025527 AMAQI
19th Jul 2025528 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20251710 AMAQI
19th Jul 20251311 AMAQI
19th Jul 20251612 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025302 PMAQI
19th Jul 2025303 PMAQI
19th Jul 2025344 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025386 PMAQI
19th Jul 2025397 PMAQI
19th Jul 2025408 PMAQI
19th Jul 2025509 PMAQI
19th Jul 20255010 PMAQI
19th Jul 20254811 PMAQI
20th Jul 20254812 AMAQI
20th Jul 2025521 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025533 AMAQI
20th Jul 2025524 AMAQI
25°C22/28°C
20th Jul 2025525 AMAQI
20th Jul 2025516 AMAQI
20th Jul 2025517 AMAQI
20th Jul 2025528 AMAQI
20th Jul 2025359 AMAQI
20th Jul 20251710 AMAQI
20th Jul 20253611 AMAQI
20th Jul 20253412 PMAQI
20th Jul 2025401 PMAQI
20th Jul 2025392 PMAQI
20th Jul 2025393 PMAQI
20th Jul 2025394 PMAQI
20th Jul 2025355 PMAQI
20th Jul 2025386 PMAQI
20th Jul 2025447 PMAQI
20th Jul 2025428 PMAQI
20th Jul 2025489 PMAQI
20th Jul 20255010 PMAQI
20th Jul 20255211 PMAQI
21st Jul 20255112 AMAQI
21st Jul 2025521 AMAQI
21st Jul 2025502 AMAQI
21st Jul 2025513 AMAQI
21st Jul 2025504 AMAQI
27°C23/32°C
21st Jul 2025495 AMAQI
21st Jul 2025506 AMAQI
21st Jul 2025487 AMAQI
21st Jul 2025488 AMAQI
21st Jul 2025479 AMAQI
21st Jul 20254610 AMAQI
21st Jul 20254811 AMAQI
21st Jul 20254512 PMAQI
21st Jul 2025381 PMAQI
21st Jul 2025392 PMAQI
21st Jul 2025403 PMAQI
21st Jul 2025404 PMAQI
21st Jul 2025345 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025357 PMAQI
21st Jul 2025328 PMAQI
21st Jul 2025449 PMAQI
21st Jul 20254610 PMAQI
21st Jul 20254611 PMAQI
22nd Jul 20254612 AMAQI
22nd Jul 2025481 AMAQI
22nd Jul 2025492 AMAQI
22nd Jul 2025503 AMAQI
22nd Jul 2025504 AMAQI
28°C25/31°C
22nd Jul 2025495 AMAQI
22nd Jul 2025506 AMAQI
22nd Jul 2025507 AMAQI
22nd Jul 2025508 AMAQI
22nd Jul 2025369 AMAQI
22nd Jul 20253110 AMAQI
22nd Jul 20253811 AMAQI
22nd Jul 20253212 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025432 PMAQI
22nd Jul 2025423 PMAQI
22nd Jul 2025394 PMAQI
22nd Jul 2025325 PMAQI
22nd Jul 2025346 PMAQI
22nd Jul 2025387 PMAQI
22nd Jul 2025388 PMAQI
22nd Jul 2025489 PMAQI
22nd Jul 20254610 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254812 AMAQI
23rd Jul 2025481 AMAQI
23rd Jul 2025482 AMAQI
23rd Jul 2025483 AMAQI
23rd Jul 2025484 AMAQI
28°C25/32°C
23rd Jul 2025465 AMAQI
23rd Jul 2025476 AMAQI
23rd Jul 2025467 AMAQI
23rd Jul 2025468 AMAQI
23rd Jul 2025329 AMAQI
23rd Jul 20253410 AMAQI
23rd Jul 20254011 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025441 PMAQI
23rd Jul 2025522 PMAQI
23rd Jul 2025533 PMAQI
23rd Jul 2025544 PMAQI
23rd Jul 2025575 PMAQI
23rd Jul 2025566 PMAQI
23rd Jul 2025547 PMAQI
23rd Jul 2025388 PMAQI
23rd Jul 2025469 PMAQI
23rd Jul 20254410 PMAQI
23rd Jul 20254411 PMAQI
24th Jul 20254612 AMAQI
24th Jul 2025461 AMAQI
24th Jul 2025472 AMAQI
24th Jul 2025473 AMAQI
24th Jul 2025484 AMAQI
28°C25/32°C
24th Jul 2025485 AMAQI
24th Jul 2025486 AMAQI
24th Jul 2025477 AMAQI
24th Jul 2025478 AMAQI
24th Jul 2025409 AMAQI
24th Jul 20253410 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20253512 PMAQI
24th Jul 2025461 PMAQI
24th Jul 2025602 PMAQI
24th Jul 2025643 PMAQI
24th Jul 2025714 PMAQI
24th Jul 2025675 PMAQI
24th Jul 2025596 PMAQI
24th Jul 2025627 PMAQI
24th Jul 2025608 PMAQI
24th Jul 2025549 PMAQI
24th Jul 20255310 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20255412 AMAQI
25th Jul 2025551 AMAQI
25th Jul 2025492 AMAQI
25th Jul 2025473 AMAQI
25th Jul 2025474 AMAQI
28°C25/32°C
25th Jul 2025485 AMAQI
25th Jul 2025486 AMAQI
25th Jul 2025487 AMAQI
25th Jul 2025488 AMAQI
25th Jul 2025629 AMAQI
25th Jul 20257510 AMAQI
25th Jul 20257011 AMAQI
25th Jul 20257312 PMAQI
25th Jul 2025721 PMAQI
25th Jul 2025732 PMAQI
25th Jul 2025763 PMAQI
25th Jul 2025764 PMAQI
25th Jul 2025805 PMAQI
25th Jul 2025796 PMAQI
25th Jul 2025757 PMAQI
25th Jul 2025688 PMAQI
25th Jul 2025579 PMAQI
25th Jul 20255710 PMAQI
25th Jul 20255811 PMAQI
26th Jul 20255712 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025523 AMAQI
26th Jul 2025534 AMAQI
30°C26/35°C
26th Jul 2025555 AMAQI
26th Jul 2025556 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025558 AMAQI
26th Jul 2025569 AMAQI
26th Jul 20255510 AMAQI
26th Jul 20254711 AMAQI
26th Jul 20254112 PMAQI
26th Jul 2025541 PMAQI
26th Jul 2025552 PMAQI
26th Jul 2025583 PMAQI
26th Jul 2025604 PMAQI
26th Jul 2025585 PMAQI
26th Jul 2025626 PMAQI
26th Jul 2025737 PMAQI
26th Jul 2025728 PMAQI
26th Jul 2025629 PMAQI
26th Jul 20256210 PMAQI
26th Jul 20256311 PMAQI
27th Jul 20256212 AMAQI
27th Jul 2025561 AMAQI
27th Jul 2025562 AMAQI
27th Jul 2025553 AMAQI
27th Jul 2025554 AMAQI
31°C28/35°C
27th Jul 2025545 AMAQI
27th Jul 2025546 AMAQI
27th Jul 2025547 AMAQI
27th Jul 2025548 AMAQI
27th Jul 2025469 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025441 PMAQI
27th Jul 2025452 PMAQI
27th Jul 2025483 PMAQI
27th Jul 2025524 PMAQI
27th Jul 2025545 PMAQI
27th Jul 2025556 PMAQI
27th Jul 2025627 PMAQI
27th Jul 2025668 PMAQI
27th Jul 2025619 PMAQI
27th Jul 20256210 PMAQI
27th Jul 20256211 PMAQI
28th Jul 20256312 AMAQI
28th Jul 2025581 AMAQI
28th Jul 2025582 AMAQI
28th Jul 2025583 AMAQI
28th Jul 2025584 AMAQI
31°C28/35°C
28th Jul 2025555 AMAQI
28th Jul 2025556 AMAQI
28th Jul 2025557 AMAQI
28th Jul 2025558 AMAQI
28th Jul 2025809 AMAQI
28th Jul 20259810 AMAQI
28th Jul 20258811 AMAQI
28th Jul 20259012 PMAQI
28th Jul 2025721 PMAQI
28th Jul 2025692 PMAQI
28th Jul 2025713 PMAQI
28th Jul 2025724 PMAQI
28th Jul 2025785 PMAQI
28th Jul 2025756 PMAQI
28th Jul 2025797 PMAQI
28th Jul 2025748 PMAQI
28th Jul 2025659 PMAQI
28th Jul 20256410 PMAQI
28th Jul 20256411 PMAQI
29th Jul 20256212 AMAQI
29th Jul 2025601 AMAQI
29th Jul 2025582 AMAQI
29th Jul 2025583 AMAQI
29th Jul 2025594 AMAQI
30°C28/35°C
29th Jul 2025625 AMAQI
29th Jul 2025626 AMAQI
29th Jul 2025627 AMAQI
29th Jul 2025628 AMAQI
29th Jul 2025739 AMAQI
29th Jul 20257710 AMAQI
29th Jul 20258011 AMAQI
29th Jul 20258612 PMAQI
29th Jul 2025811 PMAQI
29th Jul 2025802 PMAQI
29th Jul 2025853 PMAQI
29th Jul 2025824 PMAQI
29th Jul 2025835 PMAQI
29th Jul 2025746 PMAQI
29th Jul 2025767 PMAQI
29th Jul 2025738 PMAQI
29th Jul 2025629 PMAQI
29th Jul 20256110 PMAQI
29th Jul 20256211 PMAQI
30th Jul 20256212 AMAQI
30th Jul 2025601 AMAQI
30th Jul 2025602 AMAQI
30th Jul 2025613 AMAQI
30th Jul 2025624 AMAQI
31°C27/36°C
30th Jul 2025645 AMAQI
30th Jul 2025636 AMAQI
30th Jul 2025637 AMAQI
30th Jul 2025648 AMAQI
30th Jul 2025809 AMAQI
30th Jul 20258510 AMAQI
30th Jul 20258311 AMAQI
30th Jul 20258512 PMAQI
30th Jul 2025801 PMAQI
30th Jul 2025782 PMAQI
30th Jul 2025773 PMAQI
30th Jul 2025754 PMAQI
30th Jul 2025805 PMAQI
30th Jul 2025886 PMAQI
30th Jul 2025837 PMAQI
30th Jul 2025768 PMAQI
30th Jul 2025689 PMAQI
30th Jul 20256710 PMAQI
30th Jul 20256611 PMAQI
31st Jul 20256412 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 20256611 AMAQI
31st Jul 20256412 PMAQI
31st Jul 2025661 PMAQI
31st Jul 2025732 PMAQI
31st Jul 2025803 PMAQI
31st Jul 2025814 PMAQI
31st Jul 2025795 PMAQI
31st Jul 2025806 PMAQI
31st Jul 2025827 PMAQI
31st Jul 2025708 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 2025583 AMAQI
4th Aug 2025584 AMAQI
28°C25/31°C
4th Aug 2025595 AMAQI
4th Aug 2025596 AMAQI
4th Aug 2025597 AMAQI
4th Aug 2025598 AMAQI
4th Aug 2025409 AMAQI
4th Aug 20253910 AMAQI
4th Aug 20254611 AMAQI
4th Aug 20254212 PMAQI
4th Aug 2025391 PMAQI
4th Aug 2025382 PMAQI
4th Aug 2025383 PMAQI
4th Aug 2025384 PMAQI
4th Aug 2025425 PMAQI
4th Aug 2025396 PMAQI
4th Aug 2025557 PMAQI
4th Aug 2025548 PMAQI
4th Aug 2025559 PMAQI
4th Aug 20255610 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255512 AMAQI
5th Aug 2025551 AMAQI
5th Aug 2025562 AMAQI
5th Aug 2025573 AMAQI
5th Aug 2025554 AMAQI
26°C23/32°C
5th Aug 2025565 AMAQI
5th Aug 2025556 AMAQI
5th Aug 2025567 AMAQI
5th Aug 2025558 AMAQI
5th Aug 2025539 AMAQI
5th Aug 20255610 AMAQI
5th Aug 20255411 AMAQI
5th Aug 20255812 PMAQI
5th Aug 2025531 PMAQI
5th Aug 2025542 PMAQI
5th Aug 2025463 PMAQI
5th Aug 2025414 PMAQI
5th Aug 2025395 PMAQI
5th Aug 2025376 PMAQI
5th Aug 2025427 PMAQI
5th Aug 2025518 PMAQI
5th Aug 2025499 PMAQI
5th Aug 20255010 PMAQI
5th Aug 20255111 PMAQI
6th Aug 20255312 AMAQI
6th Aug 2025551 AMAQI
6th Aug 2025552 AMAQI
6th Aug 2025553 AMAQI
6th Aug 2025554 AMAQI
--°C/°C
6th Aug 2025565 AMAQI
5 AM6th Aug 2025556 AMAQI
6th Aug 2025557 AMAQI
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
1 PM - 7 PM
57AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
5 AM - 12 PM
54AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 7 PM (Avg. 57), while the lowest AQI was between 5 AM to 12 PM (Avg. 54).
Night time
Avg. Highest Time
12 AM - 11 PM
56AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
56AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 56), while the lowest AQI was between 12 AM to 11 PM (Avg. 56).
2025 Days Vs Air Quality
Siheung, Ansan, Gyeonggi, South Korea
2025
24%
51
71%
153
6%
12
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
51 DaysModerate
153 DaysPoor
12 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 24%
Health Risk Level:
Very high
In 2025, 24% of 217 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
Siheung, 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
50AQI
50AQI
3rd January 2025
53AQI
53AQI
4th January 2025
58AQI
58AQI
5th January 2025
63AQI
63AQI
6th January 2025
94AQI
94AQI
7th January 2025
48AQI
48AQI
8th January 2025
65AQI
65AQI
9th January 2025
39AQI
39AQI
10th January 2025
45AQI
45AQI
11th January 2025
50AQI
50AQI
12th January 2025
69AQI
69AQI
13th January 2025
81AQI
81AQI
14th January 2025
94AQI
94AQI
15th January 2025
51AQI
51AQI
16th January 2025
70AQI
70AQI
17th January 2025
71AQI
71AQI
18th January 2025
75AQI
75AQI
19th January 2025
73AQI
73AQI
20th January 2025
127AQI
127AQI
21st January 2025
125AQI
125AQI
22nd January 2025
145AQI
145AQI
23rd January 2025
103AQI
103AQI
24th January 2025
106AQI
106AQI
25th January 2025
63AQI
63AQI
26th January 2025
55AQI
55AQI
27th January 2025
63AQI
63AQI
28th January 2025
55AQI
55AQI
29th January 2025
54AQI
54AQI
30th January 2025
42AQI
42AQI
31st January 2025
67AQI
67AQI
1st February 2025
78AQI
78AQI
2nd February 2025
78AQI
78AQI
3rd February 2025
51AQI
51AQI
4th February 2025
45AQI
45AQI
5th February 2025
39AQI
39AQI
6th February 2025
52AQI
52AQI
7th February 2025
41AQI
41AQI
8th February 2025
37AQI
37AQI
9th February 2025
40AQI
40AQI
10th February 2025
50AQI
50AQI
11th February 2025
64AQI
64AQI
12th February 2025
72AQI
72AQI
13th February 2025
53AQI
53AQI
14th February 2025
91AQI
91AQI
15th February 2025
58AQI
58AQI
16th February 2025
108AQI
108AQI
17th February 2025
47AQI
47AQI
18th February 2025
57AQI
57AQI
19th February 2025
41AQI
41AQI
20th February 2025
48AQI
48AQI
21st February 2025
45AQI
45AQI
22nd February 2025
51AQI
51AQI
23rd February 2025
46AQI
46AQI
24th February 2025
49AQI
49AQI
25th February 2025
48AQI
48AQI
26th February 2025
65AQI
65AQI
27th February 2025
56AQI
56AQI
28th February 2025
77AQI
77AQI
1st March 2025
97AQI
97AQI
2nd March 2025
78AQI
78AQI
3rd March 2025
53AQI
53AQI
4th March 2025
44AQI
44AQI
5th March 2025
34AQI
34AQI
6th March 2025
69AQI
69AQI
7th March 2025
90AQI
90AQI
8th March 2025
84AQI
84AQI
9th March 2025
100AQI
100AQI
10th March 2025
111AQI
111AQI
11th March 2025
105AQI
105AQI
12th March 2025
97AQI
97AQI
13th March 2025
95AQI
95AQI
14th March 2025
74AQI
74AQI
15th March 2025
56AQI
56AQI
16th March 2025
69AQI
69AQI
17th March 2025
61AQI
61AQI
18th March 2025
71AQI
71AQI
19th March 2025
75AQI
75AQI
20th March 2025
86AQI
86AQI
21st March 2025
95AQI
95AQI
22nd March 2025
103AQI
103AQI
23rd March 2025
107AQI
107AQI
24th March 2025
108AQI
108AQI
25th March 2025
126AQI
126AQI
26th March 2025
93AQI
93AQI
27th March 2025
93AQI
93AQI
28th March 2025
55AQI
55AQI
29th March 2025
44AQI
44AQI
30th March 2025
38AQI
38AQI
31st March 2025
56AQI
56AQI
1st April 2025
69AQI
69AQI
2nd April 2025
75AQI
75AQI
3rd April 2025
78AQI
78AQI
4th April 2025
75AQI
75AQI
5th April 2025
62AQI
62AQI
6th April 2025
63AQI
63AQI
7th April 2025
72AQI
72AQI
8th April 2025
74AQI
74AQI
9th April 2025
70AQI
70AQI
10th April 2025
78AQI
78AQI
11th April 2025
85AQI
85AQI
12th April 2025
65AQI
65AQI
13th April 2025
60AQI
60AQI
14th April 2025
41AQI
41AQI
15th April 2025
54AQI
54AQI
16th April 2025
60AQI
60AQI
17th April 2025
69AQI
69AQI
18th April 2025
82AQI
82AQI
19th April 2025
49AQI
49AQI
20th April 2025
64AQI
64AQI
21st April 2025
52AQI
52AQI
22nd April 2025
46AQI
46AQI
23rd April 2025
32AQI
32AQI
24th April 2025
64AQI
64AQI
25th April 2025
56AQI
56AQI
26th April 2025
53AQI
53AQI
27th April 2025
38AQI
38AQI
28th April 2025
57AQI
57AQI
29th April 2025
65AQI
65AQI
30th April 2025
56AQI
56AQI
1st May 2025
58AQI
58AQI
2nd May 2025
47AQI
47AQI
3rd May 2025
46AQI
46AQI
4th May 2025
47AQI
47AQI
5th May 2025
50AQI
50AQI
6th May 2025
38AQI
38AQI
7th May 2025
54AQI
54AQI
8th May 2025
59AQI
59AQI
9th May 2025
51AQI
51AQI
10th May 2025
61AQI
61AQI
11th May 2025
74AQI
74AQI
12th May 2025
75AQI
75AQI
13th May 2025
73AQI
73AQI
14th May 2025
70AQI
70AQI
15th May 2025
65AQI
65AQI
16th May 2025
58AQI
58AQI
17th May 2025
52AQI
52AQI
18th May 2025
53AQI
53AQI
19th May 2025
60AQI
60AQI
20th May 2025
39AQI
39AQI
21st May 2025
46AQI
46AQI
22nd May 2025
52AQI
52AQI
23rd May 2025
64AQI
64AQI
24th May 2025
47AQI
47AQI
25th May 2025
46AQI
46AQI
26th May 2025
67AQI
67AQI
27th May 2025
81AQI
81AQI
28th May 2025
91AQI
91AQI
29th May 2025
82AQI
82AQI
30th May 2025
89AQI
89AQI
31st May 2025
89AQI
89AQI
1st June 2025
87AQI
87AQI
2nd June 2025
94AQI
94AQI
3rd June 2025
74AQI
74AQI
4th June 2025
56AQI
56AQI
5th June 2025
56AQI
56AQI
6th June 2025
57AQI
57AQI
7th June 2025
66AQI
66AQI
8th June 2025
54AQI
54AQI
9th June 2025
60AQI
60AQI
10th June 2025
50AQI
50AQI
11th June 2025
56AQI
56AQI
12th June 2025
67AQI
67AQI
13th June 2025
77AQI
77AQI
14th June 2025
68AQI
68AQI
15th June 2025
59AQI
59AQI
16th June 2025
69AQI
69AQI
17th June 2025
70AQI
70AQI
18th June 2025
70AQI
70AQI
19th June 2025
68AQI
68AQI
20th June 2025
54AQI
54AQI
21st June 2025
62AQI
62AQI
22nd June 2025
68AQI
68AQI
23rd June 2025
75AQI
75AQI
24th June 2025
66AQI
66AQI
25th June 2025
57AQI
57AQI
26th June 2025
60AQI
60AQI
27th June 2025
67AQI
67AQI
28th June 2025
65AQI
65AQI
29th June 2025
54AQI
54AQI
30th June 2025
51AQI
51AQI
1st July 2025
46AQI
46AQI
2nd July 2025
46AQI
46AQI
3rd July 2025
50AQI
50AQI
4th July 2025
51AQI
51AQI
5th July 2025
51AQI
51AQI
6th July 2025
53AQI
53AQI
7th July 2025
66AQI
66AQI
8th July 2025
68AQI
68AQI
9th July 2025
60AQI
60AQI
10th July 2025
57AQI
57AQI
11th July 2025
51AQI
51AQI
12th July 2025
50AQI
50AQI
13th July 2025
61AQI
61AQI
14th July 2025
57AQI
57AQI
15th July 2025
48AQI
48AQI
16th July 2025
54AQI
54AQI
17th July 2025
45AQI
45AQI
18th July 2025
47AQI
47AQI
19th July 2025
44AQI
44AQI
20th July 2025
45AQI
45AQI
21st July 2025
45AQI
45AQI
22nd July 2025
44AQI
44AQI
23rd July 2025
46AQI
46AQI
24th July 2025
50AQI
50AQI
25th July 2025
61AQI
61AQI
26th July 2025
58AQI
58AQI
27th July 2025
55AQI
55AQI
28th July 2025
67AQI
67AQI
29th July 2025
68AQI
68AQI
30th July 2025
70AQI
70AQI
31st July 2025
66AQI
66AQI
1st August 2025
59AQI
59AQI
2nd August 2025
62AQI
62AQI
3rd August 2025
61AQI
61AQI
4th August 2025
51AQI
51AQI
72AQI
57AQI
80AQI
62AQI
61AQI
65AQI
54AQI
58AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202564AQI
6
20
5
13
14
1
4
21
6
5
25
9
22
1
29
13
18
4
51
153
12
Highest AQI recorded in
March80AQI
Lowest AQI recorded in
July54AQI
202464AQI
9
15
7
6
15
7
1
3
24
2
2
1
22
7
5
25
1
7
21
2
21
9
1
10
21
24
6
14
16
1
9
20
1
13
18
122
212
29
3
Highest AQI recorded in
April86AQI
Lowest AQI recorded in
September40AQI
202374AQI
3
18
6
4
1
19
6
1
2
15
13
1
1
22
7
4
23
4
4
24
2
6
23
2
7
24
10
19
1
10
19
2
12
14
3
11
15
4
1
71
235
50
7
Highest AQI recorded in
March97AQI
Lowest AQI recorded in
September57AQI
202270AQI
1
1
1
2
4
1
6
23
2
11
19
5
15
1
1
11
15
2
14
14
2
1
2
18
9
1
2
24
4
1
54
134
20
5
Highest AQI recorded in
February109AQI
Lowest AQI recorded in
August32AQI
202181AQI
9
17
5
4
14
7
3
3
14
11
2
1
4
21
3
20
66
26
5
1
Highest AQI recorded in
March100AQI
Lowest AQI recorded in
April68AQI
202066AQI
4
8
1
4
17
3
14
1
4
23
3
12
17
2
13
18
15
15
9
19
3
9
13
8
9
12
9
1
82
156
27
1
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
September52AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
81AQILeast Polluted Year Recorded
2025(Avg.)
64AQISiheung's annual 2025 AQI (64) shows an average percentage change of -8.9% (improved AQI) compared to previous years: 2020 (66), 2021 (81), 2022 (70), 2023 (74), 2024 (64).
