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
Ansan, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Aug 2021
93AQILowest AQI recorded on
9th Aug 2023
22AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 61 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
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
10AM3rd Aug
75AQI
Avg. Lowest Time
11PM3rd Aug
52AQI
In the last 24 hours,
Ansan's AQI reached its highest point of 75 at 10 AM during the Night, while the lowest point, 52, was recorded at 11 PM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
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 2025537 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025469 AMAQI
5th Jul 20254510 AMAQI
5th Jul 20254611 AMAQI
5th Jul 20254512 PMAQI
5th Jul 2025481 PMAQI
5th Jul 2025502 PMAQI
5th Jul 2025503 PMAQI
5th Jul 2025504 PMAQI
5th Jul 2025505 PMAQI
5th Jul 2025496 PMAQI
5th Jul 2025507 PMAQI
5th Jul 2025498 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 2025528 AMAQI
6th Jul 2025549 AMAQI
6th Jul 20255610 AMAQI
6th Jul 20255611 AMAQI
6th Jul 20255612 PMAQI
6th Jul 2025561 PMAQI
6th Jul 2025572 PMAQI
6th Jul 2025573 PMAQI
6th Jul 2025574 PMAQI
6th Jul 2025545 PMAQI
6th Jul 2025526 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025538 PMAQI
6th Jul 2025539 PMAQI
6th Jul 20255310 PMAQI
6th Jul 20255311 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025523 AMAQI
7th Jul 2025534 AMAQI
28°C24/32°C
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025537 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025649 AMAQI
7th Jul 20257710 AMAQI
7th Jul 20258611 AMAQI
7th Jul 20259412 PMAQI
7th Jul 2025901 PMAQI
7th Jul 2025922 PMAQI
7th Jul 2025923 PMAQI
7th Jul 2025904 PMAQI
7th Jul 2025905 PMAQI
7th Jul 2025866 PMAQI
7th Jul 2025767 PMAQI
7th Jul 2025688 PMAQI
7th Jul 2025599 PMAQI
7th Jul 20255910 PMAQI
7th Jul 20255911 PMAQI
8th Jul 20255912 AMAQI
8th Jul 2025581 AMAQI
8th Jul 2025552 AMAQI
8th Jul 2025533 AMAQI
8th Jul 2025544 AMAQI
29°C25/33°C
8th Jul 2025565 AMAQI
8th Jul 2025556 AMAQI
8th Jul 2025567 AMAQI
8th Jul 2025568 AMAQI
8th Jul 2025889 AMAQI
8th Jul 20259810 AMAQI
8th Jul 20259411 AMAQI
8th Jul 20258912 PMAQI
8th Jul 2025821 PMAQI
8th Jul 2025822 PMAQI
8th Jul 2025813 PMAQI
8th Jul 2025834 PMAQI
8th Jul 2025855 PMAQI
8th Jul 2025836 PMAQI
8th Jul 2025857 PMAQI
8th Jul 2025798 PMAQI
8th Jul 2025629 PMAQI
8th Jul 20255510 PMAQI
8th Jul 20255511 PMAQI
9th Jul 20255612 AMAQI
9th Jul 2025561 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025563 AMAQI
9th Jul 2025584 AMAQI
31°C26/37°C
9th Jul 2025615 AMAQI
9th Jul 2025616 AMAQI
9th Jul 2025617 AMAQI
9th Jul 2025618 AMAQI
9th Jul 2025639 AMAQI
9th Jul 20256210 AMAQI
9th Jul 20256011 AMAQI
9th Jul 20255912 PMAQI
9th Jul 2025601 PMAQI
9th Jul 2025622 PMAQI
9th Jul 2025613 PMAQI
9th Jul 2025594 PMAQI
9th Jul 2025595 PMAQI
9th Jul 2025586 PMAQI
9th Jul 2025607 PMAQI
9th Jul 2025688 PMAQI
9th Jul 2025609 PMAQI
9th Jul 20256110 PMAQI
9th Jul 20256111 PMAQI
10th Jul 20256112 AMAQI
10th Jul 2025621 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025583 AMAQI
10th Jul 2025584 AMAQI
31°C26/37°C
10th Jul 2025585 AMAQI
10th Jul 2025586 AMAQI
10th Jul 2025597 AMAQI
10th Jul 2025588 AMAQI
10th Jul 2025519 AMAQI
10th Jul 20255010 AMAQI
10th Jul 20254611 AMAQI
10th Jul 20254312 PMAQI
10th Jul 2025511 PMAQI
10th Jul 2025512 PMAQI
10th Jul 2025513 PMAQI
10th Jul 2025524 PMAQI
10th Jul 2025515 PMAQI
10th Jul 2025526 PMAQI
10th Jul 2025517 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 2025593 AMAQI
11th Jul 2025594 AMAQI
31°C27/36°C
11th Jul 2025585 AMAQI
11th Jul 2025606 AMAQI
11th Jul 2025587 AMAQI
11th Jul 2025588 AMAQI
11th Jul 2025479 AMAQI
11th Jul 20254310 AMAQI
11th Jul 20253811 AMAQI
11th Jul 20253912 PMAQI
11th Jul 2025471 PMAQI
11th Jul 2025442 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025484 PMAQI
11th Jul 2025485 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025487 PMAQI
11th Jul 2025508 PMAQI
11th Jul 2025549 PMAQI
11th Jul 20255510 PMAQI
11th Jul 20255511 PMAQI
12th Jul 20255512 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025572 AMAQI
12th Jul 2025573 AMAQI
12th Jul 2025574 AMAQI
30°C25/35°C
12th Jul 2025555 AMAQI
12th Jul 2025556 AMAQI
12th Jul 2025557 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025389 AMAQI
12th Jul 20253210 AMAQI
12th Jul 20253311 AMAQI
12th Jul 20253312 PMAQI
12th Jul 2025441 PMAQI
12th Jul 2025472 PMAQI
12th Jul 2025463 PMAQI
12th Jul 2025474 PMAQI
12th Jul 2025465 PMAQI
12th Jul 2025506 PMAQI
12th Jul 2025577 PMAQI
12th Jul 2025598 PMAQI
12th Jul 2025579 PMAQI
12th Jul 20255710 PMAQI
12th Jul 20255711 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025563 AMAQI
13th Jul 2025554 AMAQI
29°C24/34°C
13th Jul 2025555 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025639 AMAQI
13th Jul 20257110 AMAQI
13th Jul 20257211 AMAQI
13th Jul 20257212 PMAQI
13th Jul 2025681 PMAQI
13th Jul 2025682 PMAQI
13th Jul 2025703 PMAQI
13th Jul 2025714 PMAQI
13th Jul 2025715 PMAQI
13th Jul 2025726 PMAQI
13th Jul 2025717 PMAQI
13th Jul 2025678 PMAQI
13th Jul 2025609 PMAQI
13th Jul 20255910 PMAQI
13th Jul 20255811 PMAQI
14th Jul 20255812 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025552 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 2025719 AMAQI
14th Jul 20257710 AMAQI
14th Jul 20257811 AMAQI
14th Jul 20258112 PMAQI
14th Jul 2025731 PMAQI
14th Jul 2025692 PMAQI
14th Jul 2025623 PMAQI
14th Jul 2025544 PMAQI
14th Jul 2025465 PMAQI
14th Jul 2025436 PMAQI
14th Jul 2025377 PMAQI
14th Jul 2025418 PMAQI
14th Jul 2025539 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255311 PMAQI
15th Jul 20255412 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 2025587 AMAQI
15th Jul 2025598 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20251710 AMAQI
15th Jul 20252211 AMAQI
15th Jul 20252512 PMAQI
15th Jul 2025431 PMAQI
15th Jul 2025422 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025464 PMAQI
15th Jul 2025445 PMAQI
15th Jul 2025406 PMAQI
15th Jul 2025407 PMAQI
15th Jul 2025428 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255310 PMAQI
15th Jul 20255311 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025572 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025564 AMAQI
22°C20/24°C
16th Jul 2025555 AMAQI
16th Jul 2025556 AMAQI
16th Jul 2025557 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025619 AMAQI
16th Jul 20256310 AMAQI
16th Jul 20256511 AMAQI
16th Jul 20256212 PMAQI
16th Jul 2025581 PMAQI
16th Jul 2025542 PMAQI
16th Jul 2025553 PMAQI
16th Jul 2025564 PMAQI
16th Jul 2025565 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025417 PMAQI
16th Jul 2025438 PMAQI
16th Jul 2025519 PMAQI
16th Jul 20255110 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255412 AMAQI
17th Jul 2025551 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 2025279 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20251812 PMAQI
17th Jul 2025321 PMAQI
17th Jul 2025312 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025334 PMAQI
17th Jul 2025335 PMAQI
17th Jul 2025346 PMAQI
17th Jul 2025337 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025509 PMAQI
17th Jul 20254910 PMAQI
17th Jul 20255011 PMAQI
18th Jul 20255012 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 2025548 AMAQI
18th Jul 2025339 AMAQI
18th Jul 20252810 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20253112 PMAQI
18th Jul 2025361 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025384 PMAQI
18th Jul 2025385 PMAQI
18th Jul 2025456 PMAQI
18th Jul 2025487 PMAQI
18th Jul 2025488 PMAQI
18th Jul 2025529 PMAQI
18th Jul 20255310 PMAQI
18th Jul 20255311 PMAQI
19th Jul 20255312 AMAQI
19th Jul 2025531 AMAQI
19th Jul 2025532 AMAQI
19th Jul 2025533 AMAQI
19th Jul 2025534 AMAQI
23°C22/25°C
19th Jul 2025515 AMAQI
19th Jul 2025516 AMAQI
19th Jul 2025517 AMAQI
19th Jul 2025518 AMAQI
19th Jul 2025239 AMAQI
19th Jul 20251510 AMAQI
19th Jul 20251611 AMAQI
19th Jul 20251712 PMAQI
19th Jul 2025231 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025296 PMAQI
19th Jul 2025307 PMAQI
19th Jul 2025358 PMAQI
19th Jul 2025459 PMAQI
19th Jul 20254410 PMAQI
19th Jul 20254311 PMAQI
20th Jul 20254312 AMAQI
20th Jul 2025491 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025533 AMAQI
20th Jul 2025514 AMAQI
25°C22/28°C
20th Jul 2025495 AMAQI
20th Jul 2025496 AMAQI
20th Jul 2025497 AMAQI
20th Jul 2025498 AMAQI
20th Jul 2025379 AMAQI
20th Jul 20252710 AMAQI
20th Jul 20253111 AMAQI
20th Jul 20253412 PMAQI
20th Jul 2025361 PMAQI
20th Jul 2025362 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025354 PMAQI
20th Jul 2025335 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025438 PMAQI
20th Jul 2025479 PMAQI
20th Jul 20254810 PMAQI
20th Jul 20255011 PMAQI
21st Jul 20255012 AMAQI
21st Jul 2025501 AMAQI
21st Jul 2025502 AMAQI
21st Jul 2025503 AMAQI
21st Jul 2025494 AMAQI
27°C23/32°C
21st Jul 2025475 AMAQI
21st Jul 2025476 AMAQI
21st Jul 2025477 AMAQI
21st Jul 2025478 AMAQI
21st Jul 2025539 AMAQI
21st Jul 20255210 AMAQI
21st Jul 20254611 AMAQI
21st Jul 20254512 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025412 PMAQI
21st Jul 2025443 PMAQI
21st Jul 2025424 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025348 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254110 PMAQI
21st Jul 20254111 PMAQI
22nd Jul 20254112 AMAQI
22nd Jul 2025471 AMAQI
22nd Jul 2025492 AMAQI
22nd Jul 2025493 AMAQI
22nd Jul 2025494 AMAQI
28°C25/31°C
22nd Jul 2025495 AMAQI
22nd Jul 2025496 AMAQI
22nd Jul 2025497 AMAQI
22nd Jul 2025498 AMAQI
22nd Jul 2025339 AMAQI
22nd Jul 20253710 AMAQI
22nd Jul 20254511 AMAQI
22nd Jul 20254212 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025442 PMAQI
22nd Jul 2025463 PMAQI
22nd Jul 2025434 PMAQI
22nd Jul 2025385 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025347 PMAQI
22nd Jul 2025368 PMAQI
22nd Jul 2025439 PMAQI
22nd Jul 20254210 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254612 AMAQI
23rd Jul 2025461 AMAQI
23rd Jul 2025462 AMAQI
23rd Jul 2025483 AMAQI
23rd Jul 2025474 AMAQI
28°C25/32°C
23rd Jul 2025465 AMAQI
23rd Jul 2025466 AMAQI
23rd Jul 2025467 AMAQI
23rd Jul 2025468 AMAQI
23rd Jul 2025419 AMAQI
23rd Jul 20254310 AMAQI
23rd Jul 20254511 AMAQI
23rd Jul 20254412 PMAQI
23rd Jul 2025481 PMAQI
23rd Jul 2025522 PMAQI
23rd Jul 2025513 PMAQI
23rd Jul 2025524 PMAQI
23rd Jul 2025545 PMAQI
23rd Jul 2025556 PMAQI
23rd Jul 2025537 PMAQI
23rd Jul 2025458 PMAQI
23rd Jul 2025469 PMAQI
23rd Jul 20254410 PMAQI
23rd Jul 20254411 PMAQI
24th Jul 20254312 AMAQI
24th Jul 2025461 AMAQI
24th Jul 2025472 AMAQI
24th Jul 2025463 AMAQI
24th Jul 2025474 AMAQI
28°C25/32°C
24th Jul 2025475 AMAQI
24th Jul 2025476 AMAQI
24th Jul 2025477 AMAQI
24th Jul 2025478 AMAQI
24th Jul 2025419 AMAQI
24th Jul 20254110 AMAQI
24th Jul 20254011 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025451 PMAQI
24th Jul 2025562 PMAQI
24th Jul 2025643 PMAQI
24th Jul 2025694 PMAQI
24th Jul 2025695 PMAQI
24th Jul 2025656 PMAQI
24th Jul 2025637 PMAQI
24th Jul 2025608 PMAQI
24th Jul 2025559 PMAQI
24th Jul 20255510 PMAQI
24th Jul 20255611 PMAQI
25th Jul 20255612 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 2025649 AMAQI
25th Jul 20257410 AMAQI
25th Jul 20257411 AMAQI
25th Jul 20257712 PMAQI
25th Jul 2025741 PMAQI
25th Jul 2025742 PMAQI
25th Jul 2025773 PMAQI
25th Jul 2025804 PMAQI
25th Jul 2025835 PMAQI
25th Jul 2025846 PMAQI
25th Jul 2025827 PMAQI
25th Jul 2025718 PMAQI
25th Jul 2025609 PMAQI
25th Jul 20256010 PMAQI
25th Jul 20256011 PMAQI
26th Jul 20255912 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025512 AMAQI
26th Jul 2025513 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 2025579 AMAQI
26th Jul 20255310 AMAQI
26th Jul 20253911 AMAQI
26th Jul 20254212 PMAQI
26th Jul 2025491 PMAQI
26th Jul 2025512 PMAQI
26th Jul 2025523 PMAQI
26th Jul 2025554 PMAQI
26th Jul 2025565 PMAQI
26th Jul 2025626 PMAQI
26th Jul 2025707 PMAQI
26th Jul 2025738 PMAQI
26th Jul 2025649 PMAQI
26th Jul 20256510 PMAQI
26th Jul 20256611 PMAQI
27th Jul 20256612 AMAQI
27th Jul 2025551 AMAQI
27th Jul 2025552 AMAQI
27th Jul 2025553 AMAQI
27th Jul 2025544 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 20253610 AMAQI
27th Jul 20252711 AMAQI
27th Jul 20252712 PMAQI
27th Jul 2025391 PMAQI
27th Jul 2025382 PMAQI
27th Jul 2025413 PMAQI
27th Jul 2025424 PMAQI
27th Jul 2025465 PMAQI
27th Jul 2025526 PMAQI
27th Jul 2025617 PMAQI
27th Jul 2025668 PMAQI
27th Jul 2025629 PMAQI
27th Jul 20256310 PMAQI
27th Jul 20256311 PMAQI
28th Jul 20256412 AMAQI
28th Jul 2025571 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 2025789 AMAQI
28th Jul 20258810 AMAQI
28th Jul 20258811 AMAQI
28th Jul 20258412 PMAQI
28th Jul 2025711 PMAQI
28th Jul 2025672 PMAQI
28th Jul 2025653 PMAQI
28th Jul 2025694 PMAQI
28th Jul 2025765 PMAQI
28th Jul 2025806 PMAQI
28th Jul 2025807 PMAQI
28th Jul 2025748 PMAQI
28th Jul 2025649 PMAQI
28th Jul 20256110 PMAQI
28th Jul 20256011 PMAQI
29th Jul 20256012 AMAQI
29th Jul 2025581 AMAQI
29th Jul 2025572 AMAQI
29th Jul 2025573 AMAQI
29th Jul 2025584 AMAQI
30°C28/35°C
29th Jul 2025615 AMAQI
29th Jul 2025616 AMAQI
29th Jul 2025617 AMAQI
29th Jul 2025618 AMAQI
29th Jul 2025719 AMAQI
29th Jul 20257610 AMAQI
29th Jul 20258311 AMAQI
29th Jul 20259012 PMAQI
29th Jul 2025871 PMAQI
29th Jul 2025852 PMAQI
29th Jul 2025873 PMAQI
29th Jul 2025854 PMAQI
29th Jul 2025835 PMAQI
29th Jul 2025746 PMAQI
29th Jul 2025747 PMAQI
29th Jul 2025708 PMAQI
29th Jul 2025629 PMAQI
29th Jul 20256210 PMAQI
29th Jul 20256311 PMAQI
30th Jul 20256312 AMAQI
30th Jul 2025591 AMAQI
30th Jul 2025582 AMAQI
30th Jul 2025593 AMAQI
30th Jul 2025604 AMAQI
31°C27/36°C
30th Jul 2025635 AMAQI
30th Jul 2025636 AMAQI
30th Jul 2025627 AMAQI
30th Jul 2025638 AMAQI
30th Jul 2025799 AMAQI
30th Jul 20258310 AMAQI
30th Jul 20258311 AMAQI
30th Jul 20258512 PMAQI
30th Jul 2025821 PMAQI
30th Jul 2025792 PMAQI
30th Jul 2025783 PMAQI
30th Jul 2025804 PMAQI
30th Jul 2025855 PMAQI
30th Jul 2025906 PMAQI
30th Jul 2025887 PMAQI
30th Jul 2025778 PMAQI
30th Jul 2025679 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20256611 PMAQI
31st Jul 20256612 AMAQI
31st Jul 2025611 AMAQI
31st Jul 2025612 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 20256411 AMAQI
31st Jul 20256612 PMAQI
31st Jul 2025681 PMAQI
31st Jul 2025752 PMAQI
31st Jul 2025793 PMAQI
31st Jul 2025774 PMAQI
31st Jul 2025755 PMAQI
31st Jul 2025766 PMAQI
31st Jul 2025817 PMAQI
31st Jul 2025718 PMAQI
31st Jul 2025559 PMAQI
31st Jul 20255610 PMAQI
31st Jul 20255611 PMAQI
1st Aug 20255612 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 2025629 AMAQI
1st Aug 20256510 AMAQI
1st Aug 20255911 AMAQI
1st Aug 20255912 PMAQI
1st Aug 2025571 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025723 PMAQI
1st Aug 2025644 PMAQI
1st Aug 2025755 PMAQI
1st Aug 2025626 PMAQI
1st Aug 2025647 PMAQI
1st Aug 2025618 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20256111 PMAQI
2nd Aug 20255812 AMAQI
2nd Aug 2025551 AMAQI
2nd Aug 2025542 AMAQI
2nd Aug 2025553 AMAQI
2nd Aug 2025554 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 20257810 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20258312 PMAQI
2nd Aug 2025791 PMAQI
2nd Aug 2025642 PMAQI
2nd Aug 2025603 PMAQI
2nd Aug 2025624 PMAQI
2nd Aug 2025605 PMAQI
2nd Aug 2025666 PMAQI
2nd Aug 2025647 PMAQI
2nd Aug 2025598 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256111 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 2025699 AMAQI
3rd Aug 20257510 AMAQI
3rd Aug 20257511 AMAQI
3rd Aug 20256712 PMAQI
3rd Aug 2025681 PMAQI
3rd Aug 2025692 PMAQI
3rd Aug 2025693 PMAQI
3rd Aug 2025674 PMAQI
3rd Aug 2025695 PMAQI
3rd Aug 2025676 PMAQI
3rd Aug 2025647 PMAQI
3rd Aug 2025598 PMAQI
3rd Aug 2025599 PMAQI
3rd Aug 20255810 PMAQI
3rd Aug 20255211 PMAQI
4th Aug 20255412 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025572 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025574 AMAQI
--°C/°C
5 AM
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
56AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
56AQI
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. 56), while the lowest AQI was between 5 AM to 7 PM (Avg. 56).
Night time
Avg. Highest Time
12 AM - 11 PM
55AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
55AQI
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. 55), while the lowest AQI was between 12 AM to 11 PM (Avg. 55).
2025 Days Vs Air Quality
Ansan, Gyeonggi, South Korea
2025
17%
36
76%
162
7%
16
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
36 DaysModerate
162 DaysPoor
16 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 17%
Health Risk Level:
Extreme
In 2025, 17% of 215 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
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
73AQI
73AQI
2nd January 2025
54AQI
54AQI
3rd January 2025
57AQI
57AQI
4th January 2025
59AQI
59AQI
5th January 2025
67AQI
67AQI
6th January 2025
94AQI
94AQI
7th January 2025
52AQI
52AQI
8th January 2025
66AQI
66AQI
9th January 2025
42AQI
42AQI
10th January 2025
49AQI
49AQI
11th January 2025
56AQI
56AQI
12th January 2025
75AQI
75AQI
13th January 2025
88AQI
88AQI
14th January 2025
100AQI
100AQI
15th January 2025
53AQI
53AQI
16th January 2025
77AQI
77AQI
17th January 2025
74AQI
74AQI
18th January 2025
80AQI
80AQI
19th January 2025
81AQI
81AQI
20th January 2025
130AQI
130AQI
21st January 2025
133AQI
133AQI
22nd January 2025
150AQI
150AQI
23rd January 2025
115AQI
115AQI
24th January 2025
110AQI
110AQI
25th January 2025
70AQI
70AQI
26th January 2025
56AQI
56AQI
27th January 2025
66AQI
66AQI
28th January 2025
57AQI
57AQI
29th January 2025
58AQI
58AQI
30th January 2025
48AQI
48AQI
31st January 2025
70AQI
70AQI
1st February 2025
80AQI
80AQI
2nd February 2025
89AQI
89AQI
3rd February 2025
52AQI
52AQI
4th February 2025
51AQI
51AQI
5th February 2025
42AQI
42AQI
6th February 2025
53AQI
53AQI
7th February 2025
45AQI
45AQI
8th February 2025
39AQI
39AQI
9th February 2025
44AQI
44AQI
10th February 2025
53AQI
53AQI
11th February 2025
70AQI
70AQI
12th February 2025
78AQI
78AQI
13th February 2025
53AQI
53AQI
14th February 2025
91AQI
91AQI
15th February 2025
58AQI
58AQI
16th February 2025
112AQI
112AQI
17th February 2025
49AQI
49AQI
18th February 2025
61AQI
61AQI
19th February 2025
45AQI
45AQI
20th February 2025
54AQI
54AQI
21st February 2025
52AQI
52AQI
22nd February 2025
56AQI
56AQI
23rd February 2025
52AQI
52AQI
24th February 2025
55AQI
55AQI
25th February 2025
55AQI
55AQI
26th February 2025
69AQI
69AQI
27th February 2025
61AQI
61AQI
28th February 2025
85AQI
85AQI
1st March 2025
102AQI
102AQI
2nd March 2025
82AQI
82AQI
3rd March 2025
56AQI
56AQI
4th March 2025
46AQI
46AQI
5th March 2025
36AQI
36AQI
6th March 2025
78AQI
78AQI
7th March 2025
94AQI
94AQI
8th March 2025
89AQI
89AQI
9th March 2025
101AQI
101AQI
10th March 2025
121AQI
121AQI
11th March 2025
111AQI
111AQI
12th March 2025
108AQI
108AQI
13th March 2025
100AQI
100AQI
14th March 2025
79AQI
79AQI
15th March 2025
61AQI
61AQI
16th March 2025
73AQI
73AQI
17th March 2025
66AQI
66AQI
18th March 2025
74AQI
74AQI
19th March 2025
81AQI
81AQI
20th March 2025
92AQI
92AQI
21st March 2025
102AQI
102AQI
22nd March 2025
109AQI
109AQI
23rd March 2025
114AQI
114AQI
24th March 2025
114AQI
114AQI
25th March 2025
128AQI
128AQI
26th March 2025
95AQI
95AQI
27th March 2025
93AQI
93AQI
28th March 2025
59AQI
59AQI
29th March 2025
48AQI
48AQI
30th March 2025
43AQI
43AQI
31st March 2025
61AQI
61AQI
1st April 2025
76AQI
76AQI
2nd April 2025
86AQI
86AQI
3rd April 2025
87AQI
87AQI
4th April 2025
84AQI
84AQI
5th April 2025
72AQI
72AQI
6th April 2025
66AQI
66AQI
7th April 2025
74AQI
74AQI
8th April 2025
79AQI
79AQI
9th April 2025
76AQI
76AQI
10th April 2025
84AQI
84AQI
11th April 2025
94AQI
94AQI
12th April 2025
69AQI
69AQI
13th April 2025
65AQI
65AQI
14th April 2025
47AQI
47AQI
15th April 2025
58AQI
58AQI
16th April 2025
63AQI
63AQI
17th April 2025
70AQI
70AQI
18th April 2025
79AQI
79AQI
19th April 2025
50AQI
50AQI
20th April 2025
66AQI
66AQI
21st April 2025
55AQI
55AQI
22nd April 2025
47AQI
47AQI
23rd April 2025
35AQI
35AQI
24th April 2025
66AQI
66AQI
25th April 2025
60AQI
60AQI
26th April 2025
55AQI
55AQI
27th April 2025
42AQI
42AQI
28th April 2025
60AQI
60AQI
29th April 2025
70AQI
70AQI
30th April 2025
59AQI
59AQI
1st May 2025
62AQI
62AQI
2nd May 2025
50AQI
50AQI
3rd May 2025
49AQI
49AQI
4th May 2025
47AQI
47AQI
5th May 2025
54AQI
54AQI
6th May 2025
42AQI
42AQI
7th May 2025
56AQI
56AQI
8th May 2025
63AQI
63AQI
9th May 2025
52AQI
52AQI
10th May 2025
62AQI
62AQI
11th May 2025
72AQI
72AQI
12th May 2025
75AQI
75AQI
13th May 2025
76AQI
76AQI
14th May 2025
73AQI
73AQI
15th May 2025
66AQI
66AQI
16th May 2025
57AQI
57AQI
17th May 2025
51AQI
51AQI
18th May 2025
57AQI
57AQI
19th May 2025
62AQI
62AQI
20th May 2025
40AQI
40AQI
21st May 2025
50AQI
50AQI
22nd May 2025
52AQI
52AQI
23rd May 2025
66AQI
66AQI
24th May 2025
50AQI
50AQI
25th May 2025
50AQI
50AQI
26th May 2025
69AQI
69AQI
27th May 2025
83AQI
83AQI
28th May 2025
89AQI
89AQI
29th May 2025
83AQI
83AQI
30th May 2025
92AQI
92AQI
31st May 2025
91AQI
91AQI
1st June 2025
88AQI
88AQI
2nd June 2025
94AQI
94AQI
3rd June 2025
76AQI
76AQI
4th June 2025
60AQI
60AQI
5th June 2025
60AQI
60AQI
6th June 2025
59AQI
59AQI
7th June 2025
67AQI
67AQI
8th June 2025
56AQI
56AQI
9th June 2025
63AQI
63AQI
10th June 2025
52AQI
52AQI
11th June 2025
57AQI
57AQI
12th June 2025
66AQI
66AQI
13th June 2025
76AQI
76AQI
14th June 2025
68AQI
68AQI
15th June 2025
59AQI
59AQI
16th June 2025
67AQI
67AQI
17th June 2025
67AQI
67AQI
18th June 2025
69AQI
69AQI
19th June 2025
67AQI
67AQI
20th June 2025
54AQI
54AQI
21st June 2025
61AQI
61AQI
22nd June 2025
68AQI
68AQI
23rd June 2025
74AQI
74AQI
24th June 2025
65AQI
65AQI
25th June 2025
55AQI
55AQI
26th June 2025
59AQI
59AQI
27th June 2025
67AQI
67AQI
28th June 2025
65AQI
65AQI
29th June 2025
53AQI
53AQI
30th June 2025
51AQI
51AQI
1st July 2025
47AQI
47AQI
2nd July 2025
49AQI
49AQI
3rd July 2025
54AQI
54AQI
4th July 2025
53AQI
53AQI
5th July 2025
51AQI
51AQI
6th July 2025
53AQI
53AQI
7th July 2025
66AQI
66AQI
8th July 2025
69AQI
69AQI
9th July 2025
59AQI
59AQI
10th July 2025
55AQI
55AQI
11th July 2025
52AQI
52AQI
12th July 2025
52AQI
52AQI
13th July 2025
62AQI
62AQI
14th July 2025
57AQI
57AQI
15th July 2025
48AQI
48AQI
16th July 2025
54AQI
54AQI
17th July 2025
44AQI
44AQI
18th July 2025
47AQI
47AQI
19th July 2025
39AQI
39AQI
20th July 2025
43AQI
43AQI
21st July 2025
44AQI
44AQI
22nd July 2025
43AQI
43AQI
23rd July 2025
47AQI
47AQI
24th July 2025
52AQI
52AQI
25th July 2025
63AQI
63AQI
26th July 2025
57AQI
57AQI
27th July 2025
52AQI
52AQI
28th July 2025
66AQI
66AQI
29th July 2025
69AQI
69AQI
30th July 2025
71AQI
71AQI
31st July 2025
65AQI
65AQI
1st August 2025
60AQI
60AQI
2nd August 2025
61AQI
61AQI
76AQI
61AQI
84AQI
66AQI
63AQI
65AQI
54AQI
61AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202567AQI
3
23
5
6
21
1
4
17
10
5
25
8
23
30
10
21
2
36
162
16
Highest AQI recorded in
March84AQI
Lowest AQI recorded in
July54AQI
202462AQI
10
15
6
10
12
6
1
6
21
2
2
2
25
3
10
21
6
24
23
7
1
10
21
23
7
14
16
1
9
21
6
25
129
215
19
3
Highest AQI recorded in
January78AQI
Lowest AQI recorded in
September42AQI
202368AQI
7
16
6
2
2
19
5
2
2
16
13
5
20
4
1
5
24
2
5
25
14
16
1
15
16
16
14
11
19
1
12
15
2
11
16
4
105
216
38
5
Highest AQI recorded in
March93AQI
Lowest AQI recorded in
September49AQI
202268AQI
2
20
7
2
3
12
5
2
6
18
7
7
17
6
7
22
2
18
12
6
19
3
1
18
9
2
17
11
3
5
18
6
1
8
21
2
100
180
40
5
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
August34AQI
202169AQI
8
20
3
7
13
6
2
4
16
8
2
1
8
19
3
11
17
1
2
6
23
1
11
19
1
18
13
25
5
11
20
6
18
4
2
8
12
11
123
195
38
6
1
2
Highest AQI recorded in
March99AQI
Lowest AQI recorded in
September40AQI
202061AQI
3
9
1
5
16
6
12
6
24
16
13
2
18
13
21
9
12
17
2
9
13
8
8
15
7
1
104
141
20
1
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
September44AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
69AQILeast Polluted Year Recorded
2020(Avg.)
61AQIAnsan's annual 2025 AQI (67) shows an average percentage change of 3.08% (worsened AQI) compared to previous years: 2020 (61), 2021 (69), 2022 (68), 2023 (68), 2024 (62).
