Hosu 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
Hosu Dong, Ansan, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Aug 2021
104AQILowest AQI recorded on
9th Aug 2023
16AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 57 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Hosu 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
73AQI
Avg. Lowest Time
11PM3rd Aug
50AQI
In the last 24 hours,
Hosu Dong's AQI reached its highest point of 73 at 11 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hosu 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 2025525 AMAQI
5th Jul 2025526 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025528 AMAQI
5th Jul 2025449 AMAQI
5th Jul 20254210 AMAQI
5th Jul 20254211 AMAQI
5th Jul 20254412 PMAQI
5th Jul 2025451 PMAQI
5th Jul 2025502 PMAQI
5th Jul 2025463 PMAQI
5th Jul 2025464 PMAQI
5th Jul 2025485 PMAQI
5th Jul 2025456 PMAQI
5th Jul 2025467 PMAQI
5th Jul 2025478 PMAQI
5th Jul 2025529 PMAQI
5th Jul 20255210 PMAQI
5th Jul 20255111 PMAQI
6th Jul 20255212 AMAQI
6th Jul 2025521 AMAQI
6th Jul 2025522 AMAQI
6th Jul 2025523 AMAQI
6th Jul 2025514 AMAQI
27°C24/32°C
6th Jul 2025505 AMAQI
6th Jul 2025516 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025518 AMAQI
6th Jul 2025539 AMAQI
6th Jul 20255410 AMAQI
6th Jul 20255611 AMAQI
6th Jul 20255412 PMAQI
6th Jul 2025541 PMAQI
6th Jul 2025572 PMAQI
6th Jul 2025573 PMAQI
6th Jul 2025554 PMAQI
6th Jul 2025535 PMAQI
6th Jul 2025546 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025528 PMAQI
6th Jul 2025529 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255211 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025523 AMAQI
7th Jul 2025524 AMAQI
28°C24/32°C
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025599 AMAQI
7th Jul 20257410 AMAQI
7th Jul 20258111 AMAQI
7th Jul 20258712 PMAQI
7th Jul 2025831 PMAQI
7th Jul 2025852 PMAQI
7th Jul 2025923 PMAQI
7th Jul 2025864 PMAQI
7th Jul 2025865 PMAQI
7th Jul 2025836 PMAQI
7th Jul 2025767 PMAQI
7th Jul 2025658 PMAQI
7th Jul 2025559 PMAQI
7th Jul 20255510 PMAQI
7th Jul 20255411 PMAQI
8th Jul 20255512 AMAQI
8th Jul 2025541 AMAQI
8th Jul 2025522 AMAQI
8th Jul 2025523 AMAQI
8th Jul 2025534 AMAQI
29°C25/33°C
8th Jul 2025545 AMAQI
8th Jul 2025546 AMAQI
8th Jul 2025547 AMAQI
8th Jul 2025548 AMAQI
8th Jul 2025709 AMAQI
8th Jul 20259010 AMAQI
8th Jul 20259611 AMAQI
8th Jul 20258712 PMAQI
8th Jul 2025841 PMAQI
8th Jul 2025872 PMAQI
8th Jul 2025833 PMAQI
8th Jul 2025844 PMAQI
8th Jul 2025875 PMAQI
8th Jul 2025876 PMAQI
8th Jul 2025887 PMAQI
8th Jul 2025788 PMAQI
8th Jul 2025669 PMAQI
8th Jul 20255410 PMAQI
8th Jul 20255311 PMAQI
9th Jul 20255512 AMAQI
9th Jul 2025541 AMAQI
9th Jul 2025542 AMAQI
9th Jul 2025543 AMAQI
9th Jul 2025564 AMAQI
31°C26/37°C
9th Jul 2025615 AMAQI
9th Jul 2025606 AMAQI
9th Jul 2025617 AMAQI
9th Jul 2025608 AMAQI
9th Jul 2025609 AMAQI
9th Jul 20255910 AMAQI
9th Jul 20256111 AMAQI
9th Jul 20256012 PMAQI
9th Jul 2025591 PMAQI
9th Jul 2025592 PMAQI
9th Jul 2025573 PMAQI
9th Jul 2025544 PMAQI
9th Jul 2025535 PMAQI
9th Jul 2025536 PMAQI
9th Jul 2025547 PMAQI
9th Jul 2025608 PMAQI
9th Jul 2025569 PMAQI
9th Jul 20255810 PMAQI
9th Jul 20255811 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025581 AMAQI
10th Jul 2025572 AMAQI
10th Jul 2025563 AMAQI
10th Jul 2025564 AMAQI
31°C26/37°C
10th Jul 2025575 AMAQI
10th Jul 2025576 AMAQI
10th Jul 2025587 AMAQI
10th Jul 2025578 AMAQI
10th Jul 2025409 AMAQI
10th Jul 20253910 AMAQI
10th Jul 20253811 AMAQI
10th Jul 20253912 PMAQI
10th Jul 2025521 PMAQI
10th Jul 2025512 PMAQI
10th Jul 2025523 PMAQI
10th Jul 2025524 PMAQI
10th Jul 2025515 PMAQI
10th Jul 2025526 PMAQI
10th Jul 2025527 PMAQI
10th Jul 2025548 PMAQI
10th Jul 2025559 PMAQI
10th Jul 20255610 PMAQI
10th Jul 20255611 PMAQI
11th Jul 20255612 AMAQI
11th Jul 2025581 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025593 AMAQI
11th Jul 2025584 AMAQI
31°C27/36°C
11th Jul 2025585 AMAQI
11th Jul 2025606 AMAQI
11th Jul 2025567 AMAQI
11th Jul 2025578 AMAQI
11th Jul 2025429 AMAQI
11th Jul 20253610 AMAQI
11th Jul 20252711 AMAQI
11th Jul 20253312 PMAQI
11th Jul 2025481 PMAQI
11th Jul 2025442 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025504 PMAQI
11th Jul 2025485 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025497 PMAQI
11th Jul 2025508 PMAQI
11th Jul 2025549 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255411 PMAQI
12th Jul 20255512 AMAQI
12th Jul 2025551 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025563 AMAQI
12th Jul 2025564 AMAQI
30°C25/35°C
12th Jul 2025555 AMAQI
12th Jul 2025556 AMAQI
12th Jul 2025557 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025329 AMAQI
12th Jul 20252610 AMAQI
12th Jul 20253011 AMAQI
12th Jul 20253412 PMAQI
12th Jul 2025461 PMAQI
12th Jul 2025502 PMAQI
12th Jul 2025483 PMAQI
12th Jul 2025514 PMAQI
12th Jul 2025435 PMAQI
12th Jul 2025496 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025568 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 2025564 AMAQI
29°C24/34°C
13th Jul 2025555 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025609 AMAQI
13th Jul 20256510 AMAQI
13th Jul 20256311 AMAQI
13th Jul 20256412 PMAQI
13th Jul 2025641 PMAQI
13th Jul 2025652 PMAQI
13th Jul 2025673 PMAQI
13th Jul 2025684 PMAQI
13th Jul 2025685 PMAQI
13th Jul 2025706 PMAQI
13th Jul 2025687 PMAQI
13th Jul 2025668 PMAQI
13th Jul 2025589 PMAQI
13th Jul 20255810 PMAQI
13th Jul 20255711 PMAQI
14th Jul 20255612 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025562 AMAQI
14th Jul 2025563 AMAQI
14th Jul 2025564 AMAQI
26°C23/30°C
14th Jul 2025565 AMAQI
14th Jul 2025566 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025689 AMAQI
14th Jul 20257210 AMAQI
14th Jul 20257211 AMAQI
14th Jul 20257612 PMAQI
14th Jul 2025681 PMAQI
14th Jul 2025682 PMAQI
14th Jul 2025623 PMAQI
14th Jul 2025564 PMAQI
14th Jul 2025485 PMAQI
14th Jul 2025456 PMAQI
14th Jul 2025387 PMAQI
14th Jul 2025428 PMAQI
14th Jul 2025559 PMAQI
14th Jul 20255510 PMAQI
14th Jul 20255511 PMAQI
15th Jul 20255512 AMAQI
15th Jul 2025561 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
15th Jul 2025574 AMAQI
23°C19/29°C
15th Jul 2025585 AMAQI
15th Jul 2025586 AMAQI
15th Jul 2025587 AMAQI
15th Jul 2025578 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20251210 AMAQI
15th Jul 20251511 AMAQI
15th Jul 20251912 PMAQI
15th Jul 2025411 PMAQI
15th Jul 2025402 PMAQI
15th Jul 2025433 PMAQI
15th Jul 2025444 PMAQI
15th Jul 2025425 PMAQI
15th Jul 2025386 PMAQI
15th Jul 2025387 PMAQI
15th Jul 2025428 PMAQI
15th Jul 2025549 PMAQI
15th Jul 20255410 PMAQI
15th Jul 20255411 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025554 AMAQI
22°C20/24°C
16th Jul 2025555 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025569 AMAQI
16th Jul 20256110 AMAQI
16th Jul 20256011 AMAQI
16th Jul 20255912 PMAQI
16th Jul 2025551 PMAQI
16th Jul 2025532 PMAQI
16th Jul 2025543 PMAQI
16th Jul 2025554 PMAQI
16th Jul 2025545 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025427 PMAQI
16th Jul 2025468 PMAQI
16th Jul 2025549 PMAQI
16th Jul 20255310 PMAQI
16th Jul 20255411 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 2025556 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025558 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20251610 AMAQI
17th Jul 20251411 AMAQI
17th Jul 20251612 PMAQI
17th Jul 2025301 PMAQI
17th Jul 2025312 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025334 PMAQI
17th Jul 2025335 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025337 PMAQI
17th Jul 2025388 PMAQI
17th Jul 2025539 PMAQI
17th Jul 20255310 PMAQI
17th Jul 20255311 PMAQI
18th Jul 20255312 AMAQI
18th Jul 2025541 AMAQI
18th Jul 2025542 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025544 AMAQI
23°C21/26°C
18th Jul 2025545 AMAQI
18th Jul 2025546 AMAQI
18th Jul 2025547 AMAQI
18th Jul 2025548 AMAQI
18th Jul 2025239 AMAQI
18th Jul 20252110 AMAQI
18th Jul 20251611 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025261 PMAQI
18th Jul 2025272 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025274 PMAQI
18th Jul 2025285 PMAQI
18th Jul 2025316 PMAQI
18th Jul 2025477 PMAQI
18th Jul 2025428 PMAQI
18th Jul 2025519 PMAQI
18th Jul 20255210 PMAQI
18th Jul 20255311 PMAQI
19th Jul 20255212 AMAQI
19th Jul 2025531 AMAQI
19th Jul 2025542 AMAQI
19th Jul 2025543 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 2025229 AMAQI
19th Jul 20251210 AMAQI
19th Jul 20251211 AMAQI
19th Jul 20251312 PMAQI
19th Jul 2025171 PMAQI
19th Jul 2025162 PMAQI
19th Jul 2025163 PMAQI
19th Jul 2025154 PMAQI
19th Jul 2025175 PMAQI
19th Jul 2025176 PMAQI
19th Jul 2025177 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253710 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025441 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
20th Jul 2025504 AMAQI
25°C22/28°C
20th Jul 2025465 AMAQI
20th Jul 2025466 AMAQI
20th Jul 2025477 AMAQI
20th Jul 2025478 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252511 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025253 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025429 PMAQI
20th Jul 20254510 PMAQI
20th Jul 20254611 PMAQI
21st Jul 20254712 AMAQI
21st Jul 2025481 AMAQI
21st Jul 2025482 AMAQI
21st Jul 2025483 AMAQI
21st Jul 2025474 AMAQI
27°C23/32°C
21st Jul 2025445 AMAQI
21st Jul 2025456 AMAQI
21st Jul 2025437 AMAQI
21st Jul 2025448 AMAQI
21st Jul 2025529 AMAQI
21st Jul 20255310 AMAQI
21st Jul 20254811 AMAQI
21st Jul 20254312 PMAQI
21st Jul 2025321 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025403 PMAQI
21st Jul 2025404 PMAQI
21st Jul 2025395 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025277 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025409 PMAQI
21st Jul 20253610 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20253412 AMAQI
22nd Jul 2025461 AMAQI
22nd Jul 2025472 AMAQI
22nd Jul 2025483 AMAQI
22nd Jul 2025464 AMAQI
28°C25/31°C
22nd Jul 2025465 AMAQI
22nd Jul 2025476 AMAQI
22nd Jul 2025457 AMAQI
22nd Jul 2025468 AMAQI
22nd Jul 2025289 AMAQI
22nd Jul 20253310 AMAQI
22nd Jul 20254211 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025431 PMAQI
22nd Jul 2025432 PMAQI
22nd Jul 2025503 PMAQI
22nd Jul 2025484 PMAQI
22nd Jul 2025265 PMAQI
22nd Jul 2025386 PMAQI
22nd Jul 2025317 PMAQI
22nd Jul 2025348 PMAQI
22nd Jul 2025419 PMAQI
22nd Jul 20254110 PMAQI
22nd Jul 20254111 PMAQI
23rd Jul 20254512 AMAQI
23rd Jul 2025461 AMAQI
23rd Jul 2025452 AMAQI
23rd Jul 2025453 AMAQI
23rd Jul 2025454 AMAQI
28°C25/32°C
23rd Jul 2025435 AMAQI
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025438 AMAQI
23rd Jul 2025369 AMAQI
23rd Jul 20253710 AMAQI
23rd Jul 20254611 AMAQI
23rd Jul 20255412 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025562 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025544 PMAQI
23rd Jul 2025505 PMAQI
23rd Jul 2025536 PMAQI
23rd Jul 2025527 PMAQI
23rd Jul 2025398 PMAQI
23rd Jul 2025409 PMAQI
23rd Jul 20254110 PMAQI
23rd Jul 20254011 PMAQI
24th Jul 20253712 AMAQI
24th Jul 2025441 AMAQI
24th Jul 2025442 AMAQI
24th Jul 2025443 AMAQI
24th Jul 2025444 AMAQI
28°C25/32°C
24th Jul 2025465 AMAQI
24th Jul 2025456 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025379 AMAQI
24th Jul 20253510 AMAQI
24th Jul 20253611 AMAQI
24th Jul 20253712 PMAQI
24th Jul 2025371 PMAQI
24th Jul 2025492 PMAQI
24th Jul 2025663 PMAQI
24th Jul 2025714 PMAQI
24th Jul 2025715 PMAQI
24th Jul 2025656 PMAQI
24th Jul 2025647 PMAQI
24th Jul 2025628 PMAQI
24th Jul 2025579 PMAQI
24th Jul 20255610 PMAQI
24th Jul 20255611 PMAQI
25th Jul 20255612 AMAQI
25th Jul 2025541 AMAQI
25th Jul 2025472 AMAQI
25th Jul 2025443 AMAQI
25th Jul 2025454 AMAQI
28°C25/32°C
25th Jul 2025465 AMAQI
25th Jul 2025466 AMAQI
25th Jul 2025467 AMAQI
25th Jul 2025468 AMAQI
25th Jul 2025629 AMAQI
25th Jul 20256810 AMAQI
25th Jul 20257611 AMAQI
25th Jul 20257812 PMAQI
25th Jul 2025731 PMAQI
25th Jul 2025742 PMAQI
25th Jul 2025763 PMAQI
25th Jul 2025784 PMAQI
25th Jul 2025865 PMAQI
25th Jul 2025906 PMAQI
25th Jul 2025907 PMAQI
25th Jul 2025768 PMAQI
25th Jul 2025629 PMAQI
25th Jul 20256210 PMAQI
25th Jul 20256211 PMAQI
26th Jul 20256212 AMAQI
26th Jul 2025511 AMAQI
26th Jul 2025502 AMAQI
26th Jul 2025493 AMAQI
26th Jul 2025524 AMAQI
30°C26/35°C
26th Jul 2025555 AMAQI
26th Jul 2025556 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025558 AMAQI
26th Jul 2025539 AMAQI
26th Jul 20255110 AMAQI
26th Jul 20253111 AMAQI
26th Jul 20253112 PMAQI
26th Jul 2025411 PMAQI
26th Jul 2025482 PMAQI
26th Jul 2025453 PMAQI
26th Jul 2025454 PMAQI
26th Jul 2025525 PMAQI
26th Jul 2025586 PMAQI
26th Jul 2025707 PMAQI
26th Jul 2025748 PMAQI
26th Jul 2025669 PMAQI
26th Jul 20256810 PMAQI
26th Jul 20256811 PMAQI
27th Jul 20257012 AMAQI
27th Jul 2025561 AMAQI
27th Jul 2025542 AMAQI
27th Jul 2025543 AMAQI
27th Jul 2025534 AMAQI
31°C28/35°C
27th Jul 2025535 AMAQI
27th Jul 2025526 AMAQI
27th Jul 2025527 AMAQI
27th Jul 2025538 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20252810 AMAQI
27th Jul 20252311 AMAQI
27th Jul 20252112 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025263 PMAQI
27th Jul 2025264 PMAQI
27th Jul 2025395 PMAQI
27th Jul 2025486 PMAQI
27th Jul 2025577 PMAQI
27th Jul 2025658 PMAQI
27th Jul 2025649 PMAQI
27th Jul 20256410 PMAQI
27th Jul 20256311 PMAQI
28th Jul 20256412 AMAQI
28th Jul 2025561 AMAQI
28th Jul 2025552 AMAQI
28th Jul 2025553 AMAQI
28th Jul 2025544 AMAQI
31°C28/35°C
28th Jul 2025525 AMAQI
28th Jul 2025526 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025528 AMAQI
28th Jul 2025709 AMAQI
28th Jul 20257610 AMAQI
28th Jul 20258011 AMAQI
28th Jul 20258112 PMAQI
28th Jul 2025671 PMAQI
28th Jul 2025632 PMAQI
28th Jul 2025603 PMAQI
28th Jul 2025614 PMAQI
28th Jul 2025715 PMAQI
28th Jul 2025816 PMAQI
28th Jul 2025807 PMAQI
28th Jul 2025758 PMAQI
28th Jul 2025659 PMAQI
28th Jul 20255910 PMAQI
28th Jul 20255811 PMAQI
29th Jul 20255612 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025552 AMAQI
29th Jul 2025553 AMAQI
29th Jul 2025564 AMAQI
30°C28/35°C
29th Jul 2025595 AMAQI
29th Jul 2025596 AMAQI
29th Jul 2025597 AMAQI
29th Jul 2025588 AMAQI
29th Jul 2025649 AMAQI
29th Jul 20257110 AMAQI
29th Jul 20258111 AMAQI
29th Jul 20258312 PMAQI
29th Jul 2025861 PMAQI
29th Jul 2025872 PMAQI
29th Jul 2025843 PMAQI
29th Jul 2025874 PMAQI
29th Jul 2025815 PMAQI
29th Jul 2025746 PMAQI
29th Jul 2025777 PMAQI
29th Jul 2025728 PMAQI
29th Jul 2025629 PMAQI
29th Jul 20256410 PMAQI
29th Jul 20256411 PMAQI
30th Jul 20256412 AMAQI
30th Jul 2025571 AMAQI
30th Jul 2025572 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025584 AMAQI
31°C27/36°C
30th Jul 2025625 AMAQI
30th Jul 2025626 AMAQI
30th Jul 2025627 AMAQI
30th Jul 2025628 AMAQI
30th Jul 2025789 AMAQI
30th Jul 20257910 AMAQI
30th Jul 20258211 AMAQI
30th Jul 20258212 PMAQI
30th Jul 2025841 PMAQI
30th Jul 2025802 PMAQI
30th Jul 2025673 PMAQI
30th Jul 2025734 PMAQI
30th Jul 2025765 PMAQI
30th Jul 2025926 PMAQI
30th Jul 2025967 PMAQI
30th Jul 2025808 PMAQI
30th Jul 2025689 PMAQI
30th Jul 20256710 PMAQI
30th Jul 20256811 PMAQI
31st Jul 20256812 AMAQI
31st Jul 2025601 AMAQI
31st Jul 2025602 AMAQI
31st Jul 2025603 AMAQI
31st Jul 2025594 AMAQI
31°C28/36°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 20255711 AMAQI
31st Jul 20255912 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025752 PMAQI
31st Jul 2025773 PMAQI
31st Jul 2025764 PMAQI
31st Jul 2025735 PMAQI
31st Jul 2025766 PMAQI
31st Jul 2025837 PMAQI
31st Jul 2025708 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255510 PMAQI
31st Jul 20255611 PMAQI
1st Aug 20255712 AMAQI
1st Aug 2025551 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 2025567 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025629 AMAQI
1st Aug 20256710 AMAQI
1st Aug 20255811 AMAQI
1st Aug 20255712 PMAQI
1st Aug 2025541 PMAQI
1st Aug 2025622 PMAQI
1st Aug 2025713 PMAQI
1st Aug 2025644 PMAQI
1st Aug 2025725 PMAQI
1st Aug 2025616 PMAQI
1st Aug 2025627 PMAQI
1st Aug 2025588 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20256011 PMAQI
2nd Aug 20255712 AMAQI
2nd Aug 2025551 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 2025749 AMAQI
2nd Aug 20257710 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20258412 PMAQI
2nd Aug 2025741 PMAQI
2nd Aug 2025642 PMAQI
2nd Aug 2025553 PMAQI
2nd Aug 2025604 PMAQI
2nd Aug 2025585 PMAQI
2nd Aug 2025666 PMAQI
2nd Aug 2025607 PMAQI
2nd Aug 2025568 PMAQI
2nd Aug 2025599 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025541 AMAQI
3rd Aug 2025552 AMAQI
3rd Aug 2025553 AMAQI
3rd Aug 2025584 AMAQI
30°C27/34°C
3rd Aug 2025595 AMAQI
3rd Aug 2025586 AMAQI
3rd Aug 2025587 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025699 AMAQI
3rd Aug 20257110 AMAQI
3rd Aug 20257311 AMAQI
3rd Aug 20256712 PMAQI
3rd Aug 2025681 PMAQI
3rd Aug 2025692 PMAQI
3rd Aug 2025723 PMAQI
3rd Aug 2025694 PMAQI
3rd Aug 2025725 PMAQI
3rd Aug 2025706 PMAQI
3rd Aug 2025657 PMAQI
3rd Aug 2025588 PMAQI
3rd Aug 2025609 PMAQI
3rd Aug 20255910 PMAQI
3rd Aug 20255011 PMAQI
4th Aug 20255412 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025562 AMAQI
--°C/°C
5 AM
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
53AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
9 AM - 7 PM
53AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 53), while the lowest AQI was between 9 AM to 7 PM (Avg. 53).
Night time
Avg. Highest Time
12 AM - 11 PM
54AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
54AQI
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. 54), while the lowest AQI was between 12 AM to 11 PM (Avg. 54).
2025 Days Vs Air Quality
Hosu Dong, Ansan, Gyeonggi, South Korea
2025
21%
46
73%
157
6%
12
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
46 DaysModerate
157 DaysPoor
12 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 21%
Health Risk Level:
Very high
In 2025, 21% 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
Hosu 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
72AQI
72AQI
2nd January 2025
54AQI
54AQI
3rd January 2025
58AQI
58AQI
4th January 2025
58AQI
58AQI
5th January 2025
64AQI
64AQI
6th January 2025
91AQI
91AQI
7th January 2025
54AQI
54AQI
8th January 2025
66AQI
66AQI
9th January 2025
41AQI
41AQI
10th January 2025
50AQI
50AQI
11th January 2025
56AQI
56AQI
12th January 2025
74AQI
74AQI
13th January 2025
84AQI
84AQI
14th January 2025
97AQI
97AQI
15th January 2025
52AQI
52AQI
16th January 2025
75AQI
75AQI
17th January 2025
74AQI
74AQI
18th January 2025
78AQI
78AQI
19th January 2025
78AQI
78AQI
20th January 2025
127AQI
127AQI
21st January 2025
130AQI
130AQI
22nd January 2025
147AQI
147AQI
23rd January 2025
116AQI
116AQI
24th January 2025
110AQI
110AQI
25th January 2025
70AQI
70AQI
26th January 2025
57AQI
57AQI
27th January 2025
64AQI
64AQI
28th January 2025
58AQI
58AQI
29th January 2025
60AQI
60AQI
30th January 2025
50AQI
50AQI
31st January 2025
71AQI
71AQI
1st February 2025
77AQI
77AQI
2nd February 2025
91AQI
91AQI
3rd February 2025
52AQI
52AQI
4th February 2025
54AQI
54AQI
5th February 2025
43AQI
43AQI
6th February 2025
53AQI
53AQI
7th February 2025
46AQI
46AQI
8th February 2025
39AQI
39AQI
9th February 2025
45AQI
45AQI
10th February 2025
52AQI
52AQI
11th February 2025
68AQI
68AQI
12th February 2025
74AQI
74AQI
13th February 2025
49AQI
49AQI
14th February 2025
87AQI
87AQI
15th February 2025
56AQI
56AQI
16th February 2025
109AQI
109AQI
17th February 2025
49AQI
49AQI
18th February 2025
61AQI
61AQI
19th February 2025
45AQI
45AQI
20th February 2025
58AQI
58AQI
21st February 2025
54AQI
54AQI
22nd February 2025
58AQI
58AQI
23rd February 2025
53AQI
53AQI
24th February 2025
57AQI
57AQI
25th February 2025
54AQI
54AQI
26th February 2025
67AQI
67AQI
27th February 2025
59AQI
59AQI
28th February 2025
83AQI
83AQI
1st March 2025
93AQI
93AQI
2nd March 2025
76AQI
76AQI
3rd March 2025
55AQI
55AQI
4th March 2025
47AQI
47AQI
5th March 2025
36AQI
36AQI
6th March 2025
79AQI
79AQI
7th March 2025
93AQI
93AQI
8th March 2025
89AQI
89AQI
9th March 2025
96AQI
96AQI
10th March 2025
121AQI
121AQI
11th March 2025
107AQI
107AQI
12th March 2025
102AQI
102AQI
13th March 2025
94AQI
94AQI
14th March 2025
78AQI
78AQI
15th March 2025
59AQI
59AQI
16th March 2025
74AQI
74AQI
17th March 2025
65AQI
65AQI
18th March 2025
73AQI
73AQI
19th March 2025
82AQI
82AQI
20th March 2025
85AQI
85AQI
21st March 2025
95AQI
95AQI
22nd March 2025
100AQI
100AQI
23rd March 2025
105AQI
105AQI
24th March 2025
105AQI
105AQI
25th March 2025
121AQI
121AQI
26th March 2025
87AQI
87AQI
27th March 2025
87AQI
87AQI
28th March 2025
59AQI
59AQI
29th March 2025
47AQI
47AQI
30th March 2025
43AQI
43AQI
31st March 2025
59AQI
59AQI
1st April 2025
74AQI
74AQI
2nd April 2025
89AQI
89AQI
3rd April 2025
84AQI
84AQI
4th April 2025
81AQI
81AQI
5th April 2025
64AQI
64AQI
6th April 2025
63AQI
63AQI
7th April 2025
70AQI
70AQI
8th April 2025
74AQI
74AQI
9th April 2025
72AQI
72AQI
10th April 2025
80AQI
80AQI
11th April 2025
88AQI
88AQI
12th April 2025
68AQI
68AQI
13th April 2025
72AQI
72AQI
14th April 2025
47AQI
47AQI
15th April 2025
56AQI
56AQI
16th April 2025
59AQI
59AQI
17th April 2025
66AQI
66AQI
18th April 2025
72AQI
72AQI
19th April 2025
45AQI
45AQI
20th April 2025
61AQI
61AQI
21st April 2025
50AQI
50AQI
22nd April 2025
44AQI
44AQI
23rd April 2025
29AQI
29AQI
24th April 2025
64AQI
64AQI
25th April 2025
60AQI
60AQI
26th April 2025
52AQI
52AQI
27th April 2025
40AQI
40AQI
28th April 2025
57AQI
57AQI
29th April 2025
68AQI
68AQI
30th April 2025
55AQI
55AQI
1st May 2025
57AQI
57AQI
2nd May 2025
48AQI
48AQI
3rd May 2025
44AQI
44AQI
4th May 2025
44AQI
44AQI
5th May 2025
51AQI
51AQI
6th May 2025
39AQI
39AQI
7th May 2025
54AQI
54AQI
8th May 2025
59AQI
59AQI
9th May 2025
47AQI
47AQI
10th May 2025
56AQI
56AQI
11th May 2025
66AQI
66AQI
12th May 2025
69AQI
69AQI
13th May 2025
73AQI
73AQI
14th May 2025
70AQI
70AQI
15th May 2025
61AQI
61AQI
16th May 2025
53AQI
53AQI
17th May 2025
47AQI
47AQI
18th May 2025
55AQI
55AQI
19th May 2025
59AQI
59AQI
20th May 2025
35AQI
35AQI
21st May 2025
44AQI
44AQI
22nd May 2025
45AQI
45AQI
23rd May 2025
62AQI
62AQI
24th May 2025
48AQI
48AQI
25th May 2025
48AQI
48AQI
26th May 2025
63AQI
63AQI
27th May 2025
75AQI
75AQI
28th May 2025
81AQI
81AQI
29th May 2025
79AQI
79AQI
30th May 2025
85AQI
85AQI
31st May 2025
85AQI
85AQI
1st June 2025
82AQI
82AQI
2nd June 2025
90AQI
90AQI
3rd June 2025
72AQI
72AQI
4th June 2025
58AQI
58AQI
5th June 2025
58AQI
58AQI
6th June 2025
57AQI
57AQI
7th June 2025
65AQI
65AQI
8th June 2025
55AQI
55AQI
9th June 2025
62AQI
62AQI
10th June 2025
49AQI
49AQI
11th June 2025
54AQI
54AQI
12th June 2025
63AQI
63AQI
13th June 2025
72AQI
72AQI
14th June 2025
64AQI
64AQI
15th June 2025
56AQI
56AQI
16th June 2025
64AQI
64AQI
17th June 2025
64AQI
64AQI
18th June 2025
66AQI
66AQI
19th June 2025
64AQI
64AQI
20th June 2025
54AQI
54AQI
21st June 2025
57AQI
57AQI
22nd June 2025
63AQI
63AQI
23rd June 2025
69AQI
69AQI
24th June 2025
62AQI
62AQI
25th June 2025
53AQI
53AQI
26th June 2025
58AQI
58AQI
27th June 2025
64AQI
64AQI
28th June 2025
65AQI
65AQI
29th June 2025
54AQI
54AQI
30th June 2025
50AQI
50AQI
1st July 2025
47AQI
47AQI
2nd July 2025
49AQI
49AQI
3rd July 2025
54AQI
54AQI
4th July 2025
52AQI
52AQI
5th July 2025
49AQI
49AQI
6th July 2025
53AQI
53AQI
7th July 2025
63AQI
63AQI
8th July 2025
69AQI
69AQI
9th July 2025
56AQI
56AQI
10th July 2025
54AQI
54AQI
11th July 2025
51AQI
51AQI
12th July 2025
51AQI
51AQI
13th July 2025
60AQI
60AQI
14th July 2025
57AQI
57AQI
15th July 2025
47AQI
47AQI
16th July 2025
54AQI
54AQI
17th July 2025
44AQI
44AQI
18th July 2025
42AQI
42AQI
19th July 2025
34AQI
34AQI
20th July 2025
37AQI
37AQI
21st July 2025
41AQI
41AQI
22nd July 2025
41AQI
41AQI
23rd July 2025
46AQI
46AQI
24th July 2025
50AQI
50AQI
25th July 2025
64AQI
64AQI
26th July 2025
55AQI
55AQI
27th July 2025
48AQI
48AQI
28th July 2025
64AQI
64AQI
29th July 2025
68AQI
68AQI
30th July 2025
71AQI
71AQI
31st July 2025
64AQI
64AQI
1st August 2025
60AQI
60AQI
2nd August 2025
61AQI
61AQI
3rd August 2025
57AQI
57AQI
75AQI
60AQI
81AQI
63AQI
58AQI
62AQI
53AQI
59AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202565AQI
3
23
5
7
20
1
4
21
6
6
24
11
20
2
28
13
18
3
46
157
12
Highest AQI recorded in
March81AQI
Lowest AQI recorded in
July53AQI
202457AQI
11
15
5
12
11
5
1
7
21
3
6
24
17
14
13
17
24
7
11
20
24
6
17
14
10
20
6
25
158
194
13
1
Highest AQI recorded in
January69AQI
Lowest AQI recorded in
September41AQI
202360AQI
12
14
4
1
2
19
6
1
4
19
8
7
19
4
10
21
8
22
18
12
1
17
14
21
9
13
18
15
13
1
12
16
3
139
196
27
2
Highest AQI recorded in
February84AQI
Lowest AQI recorded in
September43AQI
202259AQI
4
20
5
2
4
11
4
2
12
16
3
8
21
1
15
16
23
7
8
15
1
21
6
1
18
12
1
9
18
2
11
19
1
134
161
18
4
Highest AQI recorded in
February81AQI
Lowest AQI recorded in
August32AQI
202163AQI
8
20
2
9
11
6
2
5
18
6
2
12
17
1
13
16
1
1
7
21
2
11
19
1
15
15
1
26
4
19
12
10
16
3
1
12
15
4
147
184
26
5
1
1
Highest AQI recorded in
March90AQI
Lowest AQI recorded in
September34AQI
202057AQI
4
8
1
5
16
6
12
7
23
19
10
2
18
13
20
10
16
14
1
12
12
6
9
15
6
1
116
133
16
1
Highest AQI recorded in
December74AQI
Lowest AQI recorded in
September42AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
65AQILeast Polluted Year Recorded
2024(Avg.)
57AQIHosu Dong's annual 2025 AQI (65) shows an average percentage change of 9.5% (worsened AQI) compared to previous years: 2020 (57), 2021 (63), 2022 (59), 2023 (60), 2024 (57).
