Dongtan Dong, Osan, 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+
November Air Quality Analysis
Dongtan Dong, Osan, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Nov 2021
177AQILowest AQI recorded on
9th Nov 2021
18AQISame Day Analysis (4th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 70 of Moderate air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Nov - 5th Nov 2025
Dongtan Dong, Osan, Gyeonggi, South Korea
AQI
Day
Night
.
6 AM4th Nov 2025
5 PM
5 AM5th Nov 2025
Day time
Avg. Highest Time
4PM4th Nov
72AQI
Avg. Lowest Time
8AM4th Nov
55AQI
Night time
Avg. Highest Time
11PM4th Nov
88AQI
Avg. Lowest Time
6PM4th Nov
67AQI
In the last 24 hours,
Dongtan Dong's AQI reached its highest point of 88 at 11 PM during the Night, while the lowest point, 55, was recorded at 8 AM during the Day between 4th Nov and 5th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Dongtan Dong, Osan, Gyeonggi, South Korea
OctNov
06th - 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 - 05th05th
Day
Night
6th Oct 2025396 AMAQI
6th Oct 2025387 AMAQI
6th Oct 2025428 AMAQI
6th Oct 2025389 AMAQI
6th Oct 20253710 AMAQI
6th Oct 20254011 AMAQI
6th Oct 20253912 PMAQI
6th Oct 2025421 PMAQI
6th Oct 2025392 PMAQI
6th Oct 2025383 PMAQI
6th Oct 2025394 PMAQI
6th Oct 2025405 PMAQI
6th Oct 2025426 PMAQI
6th Oct 2025437 PMAQI
6th Oct 2025488 PMAQI
6th Oct 2025259 PMAQI
6th Oct 20252710 PMAQI
6th Oct 20253011 PMAQI
7th Oct 20253012 AMAQI
7th Oct 2025261 AMAQI
7th Oct 2025302 AMAQI
19°C16/20°C
7th Oct 2025308 PMAQI
7th Oct 2025329 PMAQI
7th Oct 20254810 PMAQI
7th Oct 20254811 PMAQI
8th Oct 20254312 AMAQI
8th Oct 2025501 AMAQI
8th Oct 2025442 AMAQI
8th Oct 2025433 AMAQI
8th Oct 2025444 AMAQI
8th Oct 2025475 AMAQI
18°C16/20°C
8th Oct 2025476 AMAQI
8th Oct 2025467 AMAQI
8th Oct 2025408 AMAQI
8th Oct 2025329 AMAQI
8th Oct 20253610 AMAQI
8th Oct 20254011 AMAQI
8th Oct 20254512 PMAQI
8th Oct 2025471 PMAQI
8th Oct 2025482 PMAQI
8th Oct 2025483 PMAQI
8th Oct 2025494 PMAQI
8th Oct 2025505 PMAQI
8th Oct 2025536 PMAQI
8th Oct 2025427 PMAQI
8th Oct 2025428 PMAQI
8th Oct 2025579 PMAQI
8th Oct 20255210 PMAQI
8th Oct 20255111 PMAQI
9th Oct 20256012 AMAQI
9th Oct 2025611 AMAQI
9th Oct 2025642 AMAQI
9th Oct 2025423 AMAQI
9th Oct 2025394 AMAQI
9th Oct 2025415 AMAQI
22°C18/27°C
9th Oct 2025456 AMAQI
9th Oct 2025427 AMAQI
9th Oct 2025508 AMAQI
9th Oct 2025529 AMAQI
9th Oct 20255410 AMAQI
9th Oct 20255411 AMAQI
9th Oct 20255412 PMAQI
9th Oct 2025331 PMAQI
9th Oct 2025282 PMAQI
9th Oct 2025533 PMAQI
9th Oct 2025564 PMAQI
9th Oct 2025565 PMAQI
9th Oct 2025556 PMAQI
9th Oct 2025427 PMAQI
9th Oct 2025218 PMAQI
9th Oct 2025179 PMAQI
9th Oct 20252210 PMAQI
9th Oct 20251811 PMAQI
10th Oct 20252012 AMAQI
10th Oct 2025121 AMAQI
10th Oct 2025412 AMAQI
10th Oct 2025453 AMAQI
10th Oct 2025464 AMAQI
10th Oct 2025345 AMAQI
21°C20/24°C
10th Oct 2025366 AMAQI
10th Oct 2025347 AMAQI
10th Oct 2025378 AMAQI
10th Oct 2025359 AMAQI
10th Oct 20254610 AMAQI
10th Oct 20255311 AMAQI
10th Oct 20255112 PMAQI
10th Oct 2025521 PMAQI
10th Oct 2025502 PMAQI
10th Oct 2025533 PMAQI
10th Oct 2025544 PMAQI
10th Oct 2025545 PMAQI
10th Oct 2025526 PMAQI
10th Oct 2025477 PMAQI
10th Oct 2025538 PMAQI
10th Oct 2025509 PMAQI
10th Oct 20254410 PMAQI
10th Oct 20254811 PMAQI
11th Oct 20254312 AMAQI
11th Oct 2025521 AMAQI
11th Oct 2025502 AMAQI
11th Oct 2025523 AMAQI
11th Oct 2025424 AMAQI
11th Oct 2025505 AMAQI
18°C17/19°C
11th Oct 2025466 AMAQI
11th Oct 2025487 AMAQI
11th Oct 2025438 AMAQI
11th Oct 2025459 AMAQI
11th Oct 20255310 AMAQI
11th Oct 20255311 AMAQI
11th Oct 20255412 PMAQI
11th Oct 2025511 PMAQI
11th Oct 2025462 PMAQI
11th Oct 2025533 PMAQI
11th Oct 2025544 PMAQI
11th Oct 2025555 PMAQI
11th Oct 2025536 PMAQI
11th Oct 2025407 PMAQI
11th Oct 2025498 PMAQI
11th Oct 2025559 PMAQI
11th Oct 20256210 PMAQI
11th Oct 20256211 PMAQI
12th Oct 20256512 AMAQI
12th Oct 2025561 AMAQI
12th Oct 2025532 AMAQI
12th Oct 2025513 AMAQI
12th Oct 2025524 AMAQI
12th Oct 2025405 AMAQI
21°C17/26°C
12th Oct 2025416 AMAQI
12th Oct 2025387 AMAQI
12th Oct 2025408 AMAQI
12th Oct 2025379 AMAQI
12th Oct 20253910 AMAQI
12th Oct 20254211 AMAQI
12th Oct 20253912 PMAQI
12th Oct 2025401 PMAQI
12th Oct 2025402 PMAQI
12th Oct 2025493 PMAQI
12th Oct 2025484 PMAQI
12th Oct 2025495 PMAQI
12th Oct 2025506 PMAQI
12th Oct 2025537 PMAQI
12th Oct 2025528 PMAQI
12th Oct 2025509 PMAQI
12th Oct 20254710 PMAQI
12th Oct 20254811 PMAQI
13th Oct 20255012 AMAQI
13th Oct 2025501 AMAQI
13th Oct 2025472 AMAQI
13th Oct 2025483 AMAQI
13th Oct 2025464 AMAQI
13th Oct 2025515 AMAQI
20°C19/22°C
13th Oct 2025426 AMAQI
13th Oct 2025437 AMAQI
13th Oct 2025178 AMAQI
13th Oct 2025199 AMAQI
13th Oct 20252210 AMAQI
13th Oct 20252211 AMAQI
13th Oct 20251812 PMAQI
13th Oct 2025181 PMAQI
13th Oct 2025202 PMAQI
13th Oct 2025193 PMAQI
13th Oct 2025324 PMAQI
13th Oct 2025345 PMAQI
13th Oct 2025346 PMAQI
13th Oct 2025317 PMAQI
13th Oct 2025348 PMAQI
13th Oct 2025349 PMAQI
13th Oct 20253110 PMAQI
13th Oct 20252911 PMAQI
14th Oct 20253112 AMAQI
14th Oct 2025351 AMAQI
14th Oct 2025372 AMAQI
14th Oct 2025383 AMAQI
14th Oct 2025394 AMAQI
14th Oct 2025385 AMAQI
17°C14/18°C
14th Oct 2025376 AMAQI
14th Oct 2025357 AMAQI
14th Oct 2025378 AMAQI
14th Oct 2025309 AMAQI
14th Oct 20252610 AMAQI
14th Oct 20252511 AMAQI
14th Oct 20253312 PMAQI
14th Oct 2025421 PMAQI
14th Oct 2025442 PMAQI
14th Oct 2025423 PMAQI
14th Oct 2025474 PMAQI
14th Oct 2025495 PMAQI
14th Oct 2025386 PMAQI
14th Oct 2025367 PMAQI
14th Oct 2025458 PMAQI
14th Oct 2025509 PMAQI
14th Oct 20255610 PMAQI
14th Oct 20255711 PMAQI
15th Oct 20255812 AMAQI
15th Oct 2025551 AMAQI
15th Oct 2025582 AMAQI
15th Oct 2025573 AMAQI
15th Oct 2025584 AMAQI
15th Oct 2025595 AMAQI
16°C15/18°C
15th Oct 2025596 AMAQI
15th Oct 2025597 AMAQI
15th Oct 2025588 AMAQI
15th Oct 2025589 AMAQI
15th Oct 20255810 AMAQI
15th Oct 20255711 AMAQI
15th Oct 20255712 PMAQI
15th Oct 2025571 PMAQI
15th Oct 2025132 PMAQI
15th Oct 2025163 PMAQI
15th Oct 2025194 PMAQI
15th Oct 2025455 PMAQI
15th Oct 2025276 PMAQI
15th Oct 2025447 PMAQI
15th Oct 2025518 PMAQI
15th Oct 2025539 PMAQI
15th Oct 20254810 PMAQI
15th Oct 20254511 PMAQI
16th Oct 20253912 AMAQI
16th Oct 2025521 AMAQI
16th Oct 2025332 AMAQI
16th Oct 2025263 AMAQI
16th Oct 2025284 AMAQI
16th Oct 2025195 AMAQI
19°C17/25°C
16th Oct 2025186 AMAQI
16th Oct 2025217 AMAQI
16th Oct 2025208 AMAQI
16th Oct 2025199 AMAQI
16th Oct 20251910 AMAQI
16th Oct 20253611 AMAQI
16th Oct 20255512 PMAQI
16th Oct 2025491 PMAQI
16th Oct 2025412 PMAQI
16th Oct 2025223 PMAQI
16th Oct 2025344 PMAQI
16th Oct 2025155 PMAQI
16th Oct 2025506 PMAQI
16th Oct 2025447 PMAQI
16th Oct 2025398 PMAQI
16th Oct 2025409 PMAQI
16th Oct 20253610 PMAQI
16th Oct 20253511 PMAQI
17th Oct 20252512 AMAQI
17th Oct 2025171 AMAQI
17th Oct 2025322 AMAQI
17th Oct 2025323 AMAQI
17th Oct 2025284 AMAQI
17th Oct 2025215 AMAQI
19°C17/23°C
17th Oct 2025376 AMAQI
17th Oct 2025377 AMAQI
17th Oct 2025398 AMAQI
17th Oct 2025419 AMAQI
17th Oct 20253810 AMAQI
17th Oct 20254111 AMAQI
17th Oct 20254312 PMAQI
17th Oct 2025421 PMAQI
17th Oct 2025312 PMAQI
17th Oct 2025463 PMAQI
17th Oct 2025474 PMAQI
17th Oct 2025445 PMAQI
17th Oct 2025456 PMAQI
17th Oct 2025477 PMAQI
17th Oct 2025438 PMAQI
17th Oct 2025489 PMAQI
17th Oct 20255110 PMAQI
17th Oct 20255411 PMAQI
18th Oct 20255212 AMAQI
18th Oct 2025431 AMAQI
18th Oct 2025392 AMAQI
18th Oct 2025393 AMAQI
18th Oct 2025384 AMAQI
18th Oct 2025405 AMAQI
19°C17/24°C
18th Oct 2025296 AMAQI
18th Oct 2025287 AMAQI
18th Oct 2025258 AMAQI
18th Oct 2025239 AMAQI
18th Oct 20252410 AMAQI
18th Oct 20252711 AMAQI
18th Oct 20252512 PMAQI
18th Oct 2025331 PMAQI
18th Oct 2025422 PMAQI
18th Oct 2025503 PMAQI
18th Oct 2025584 PMAQI
18th Oct 2025445 PMAQI
18th Oct 2025386 PMAQI
18th Oct 2025407 PMAQI
18th Oct 2025568 PMAQI
18th Oct 2025659 PMAQI
18th Oct 20256510 PMAQI
18th Oct 20256211 PMAQI
19th Oct 20256212 AMAQI
19th Oct 2025641 AMAQI
19th Oct 2025672 AMAQI
19th Oct 2025673 AMAQI
19th Oct 2025654 AMAQI
19th Oct 2025665 AMAQI
17°C16/19°C
19th Oct 2025686 AMAQI
19th Oct 2025677 AMAQI
19th Oct 2025698 AMAQI
19th Oct 2025469 AMAQI
19th Oct 20254210 AMAQI
19th Oct 20253811 AMAQI
19th Oct 20254212 PMAQI
19th Oct 2025511 PMAQI
19th Oct 2025542 PMAQI
19th Oct 2025663 PMAQI
19th Oct 2025654 PMAQI
19th Oct 2025665 PMAQI
19th Oct 2025646 PMAQI
19th Oct 2025657 PMAQI
19th Oct 2025678 PMAQI
19th Oct 2025489 PMAQI
19th Oct 20255510 PMAQI
19th Oct 20255511 PMAQI
20th Oct 20255712 AMAQI
20th Oct 2025581 AMAQI
20th Oct 2025572 AMAQI
20th Oct 2025563 AMAQI
20th Oct 2025544 AMAQI
20th Oct 2025545 AMAQI
16°C11/19°C
20th Oct 2025546 AMAQI
20th Oct 2025547 AMAQI
20th Oct 2025588 AMAQI
20th Oct 2025599 AMAQI
20th Oct 20255810 AMAQI
20th Oct 20255811 AMAQI
20th Oct 20255812 PMAQI
20th Oct 2025571 PMAQI
20th Oct 2025562 PMAQI
20th Oct 2025573 PMAQI
20th Oct 2025564 PMAQI
20th Oct 2025565 PMAQI
20th Oct 2025566 PMAQI
20th Oct 2025577 PMAQI
20th Oct 2025568 PMAQI
20th Oct 2025569 PMAQI
20th Oct 20256010 PMAQI
20th Oct 20256211 PMAQI
21st Oct 20256412 AMAQI
21st Oct 2025651 AMAQI
21st Oct 2025612 AMAQI
21st Oct 2025583 AMAQI
21st Oct 2025584 AMAQI
21st Oct 2025575 AMAQI
12°C8/16°C
21st Oct 2025606 AMAQI
21st Oct 2025617 AMAQI
21st Oct 2025618 AMAQI
21st Oct 2025559 AMAQI
21st Oct 20255710 AMAQI
21st Oct 20255711 AMAQI
21st Oct 20255712 PMAQI
21st Oct 2025561 PMAQI
21st Oct 2025562 PMAQI
21st Oct 2025563 PMAQI
21st Oct 2025574 PMAQI
21st Oct 2025565 PMAQI
21st Oct 2025596 PMAQI
21st Oct 2025597 PMAQI
21st Oct 2025628 PMAQI
21st Oct 2025599 PMAQI
21st Oct 20256210 PMAQI
21st Oct 20256111 PMAQI
22nd Oct 20255812 AMAQI
22nd Oct 2025591 AMAQI
22nd Oct 2025612 AMAQI
22nd Oct 2025633 AMAQI
22nd Oct 2025634 AMAQI
22nd Oct 2025605 AMAQI
12°C10/15°C
22nd Oct 2025586 AMAQI
22nd Oct 2025567 AMAQI
22nd Oct 2025478 AMAQI
22nd Oct 2025549 AMAQI
22nd Oct 20255610 AMAQI
22nd Oct 20255011 AMAQI
22nd Oct 20254812 PMAQI
22nd Oct 2025251 PMAQI
22nd Oct 2025132 PMAQI
22nd Oct 2025123 PMAQI
22nd Oct 2025214 PMAQI
22nd Oct 2025115 PMAQI
22nd Oct 2025216 PMAQI
22nd Oct 2025247 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025329 PMAQI
22nd Oct 20253010 PMAQI
22nd Oct 20252011 PMAQI
23rd Oct 20252212 AMAQI
23rd Oct 2025201 AMAQI
23rd Oct 2025332 AMAQI
23rd Oct 2025273 AMAQI
23rd Oct 2025264 AMAQI
23rd Oct 2025295 AMAQI
14°C10/18°C
23rd Oct 2025296 AMAQI
23rd Oct 2025287 AMAQI
23rd Oct 2025198 AMAQI
23rd Oct 2025159 AMAQI
23rd Oct 20252210 AMAQI
23rd Oct 20252211 AMAQI
23rd Oct 20251812 PMAQI
23rd Oct 2025161 PMAQI
23rd Oct 2025182 PMAQI
23rd Oct 2025233 PMAQI
23rd Oct 2025174 PMAQI
23rd Oct 2025225 PMAQI
23rd Oct 2025226 PMAQI
23rd Oct 2025227 PMAQI
23rd Oct 2025288 PMAQI
23rd Oct 2025329 PMAQI
23rd Oct 20253310 PMAQI
23rd Oct 20254411 PMAQI
24th Oct 20254412 AMAQI
24th Oct 2025441 AMAQI
24th Oct 2025372 AMAQI
24th Oct 2025363 AMAQI
24th Oct 2025324 AMAQI
24th Oct 2025305 AMAQI
17°C14/19°C
24th Oct 2025226 AMAQI
24th Oct 2025207 AMAQI
24th Oct 2025128 AMAQI
24th Oct 2025149 AMAQI
24th Oct 20251710 AMAQI
24th Oct 20251711 AMAQI
24th Oct 20251812 PMAQI
24th Oct 2025191 PMAQI
24th Oct 2025172 PMAQI
24th Oct 2025173 PMAQI
24th Oct 2025174 PMAQI
24th Oct 2025445 PMAQI
24th Oct 2025406 PMAQI
24th Oct 2025427 PMAQI
24th Oct 2025448 PMAQI
24th Oct 2025409 PMAQI
24th Oct 20254210 PMAQI
24th Oct 20254011 PMAQI
25th Oct 20255712 AMAQI
25th Oct 2025571 AMAQI
25th Oct 2025562 AMAQI
25th Oct 2025373 AMAQI
25th Oct 2025334 AMAQI
25th Oct 2025145 AMAQI
16°C13/19°C
25th Oct 2025116 AMAQI
25th Oct 2025117 AMAQI
25th Oct 2025268 AMAQI
25th Oct 2025289 AMAQI
25th Oct 20255210 AMAQI
25th Oct 20255611 AMAQI
25th Oct 20255512 PMAQI
25th Oct 2025551 PMAQI
25th Oct 2025572 PMAQI
25th Oct 2025583 PMAQI
25th Oct 2025594 PMAQI
25th Oct 2025595 PMAQI
25th Oct 2025596 PMAQI
25th Oct 2025597 PMAQI
25th Oct 2025618 PMAQI
25th Oct 2025659 PMAQI
25th Oct 20257110 PMAQI
25th Oct 20256211 PMAQI
26th Oct 20255912 AMAQI
26th Oct 2025601 AMAQI
26th Oct 2025612 AMAQI
26th Oct 2025613 AMAQI
26th Oct 2025634 AMAQI
26th Oct 2025655 AMAQI
16°C14/18°C
26th Oct 2025656 AMAQI
26th Oct 2025707 AMAQI
26th Oct 2025698 AMAQI
26th Oct 2025699 AMAQI
26th Oct 20257410 AMAQI
26th Oct 20257511 AMAQI
26th Oct 20257512 PMAQI
26th Oct 2025761 PMAQI
26th Oct 2025842 PMAQI
26th Oct 2025803 PMAQI
26th Oct 2025804 PMAQI
26th Oct 2025805 PMAQI
26th Oct 2025756 PMAQI
26th Oct 2025747 PMAQI
26th Oct 2025788 PMAQI
26th Oct 2025789 PMAQI
26th Oct 20258510 PMAQI
26th Oct 20258611 PMAQI
27th Oct 20259212 AMAQI
27th Oct 2025931 AMAQI
27th Oct 20251022 AMAQI
27th Oct 2025983 AMAQI
27th Oct 2025784 AMAQI
27th Oct 2025535 AMAQI
14°C12/16°C
27th Oct 2025536 AMAQI
27th Oct 2025517 AMAQI
27th Oct 2025598 AMAQI
27th Oct 2025639 AMAQI
27th Oct 20256410 AMAQI
27th Oct 20256111 AMAQI
27th Oct 20256412 PMAQI
27th Oct 2025561 PMAQI
27th Oct 2025542 PMAQI
27th Oct 2025353 PMAQI
27th Oct 2025354 PMAQI
27th Oct 2025345 PMAQI
27th Oct 2025336 PMAQI
27th Oct 2025217 PMAQI
27th Oct 2025208 PMAQI
27th Oct 2025219 PMAQI
27th Oct 20252210 PMAQI
27th Oct 20252011 PMAQI
28th Oct 20251712 AMAQI
28th Oct 2025201 AMAQI
28th Oct 2025232 AMAQI
28th Oct 2025283 AMAQI
28th Oct 2025284 AMAQI
28th Oct 2025265 AMAQI
9°C7/12°C
28th Oct 2025326 AMAQI
28th Oct 2025287 AMAQI
28th Oct 2025238 AMAQI
28th Oct 2025239 AMAQI
28th Oct 20253510 AMAQI
28th Oct 20254011 AMAQI
28th Oct 20254012 PMAQI
28th Oct 2025481 PMAQI
28th Oct 2025482 PMAQI
28th Oct 2025333 PMAQI
28th Oct 2025344 PMAQI
28th Oct 2025395 PMAQI
28th Oct 2025406 PMAQI
28th Oct 2025357 PMAQI
28th Oct 2025418 PMAQI
28th Oct 2025559 PMAQI
28th Oct 20256110 PMAQI
28th Oct 20255611 PMAQI
29th Oct 20255012 AMAQI
29th Oct 2025501 AMAQI
29th Oct 2025412 AMAQI
29th Oct 2025483 AMAQI
29th Oct 2025564 AMAQI
29th Oct 2025565 AMAQI
10°C6/13°C
29th Oct 2025566 AMAQI
29th Oct 2025547 AMAQI
29th Oct 2025568 AMAQI
29th Oct 2025609 AMAQI
29th Oct 20256110 AMAQI
29th Oct 20256311 AMAQI
29th Oct 20256312 PMAQI
29th Oct 2025611 PMAQI
29th Oct 2025592 PMAQI
29th Oct 2025593 PMAQI
29th Oct 2025594 PMAQI
29th Oct 2025585 PMAQI
29th Oct 2025586 PMAQI
29th Oct 2025607 PMAQI
29th Oct 2025618 PMAQI
29th Oct 2025619 PMAQI
29th Oct 20257810 PMAQI
29th Oct 20258011 PMAQI
30th Oct 20257112 AMAQI
30th Oct 2025701 AMAQI
30th Oct 2025762 AMAQI
30th Oct 2025733 AMAQI
30th Oct 2025694 AMAQI
30th Oct 2025695 AMAQI
12°C9/16°C
30th Oct 2025696 AMAQI
30th Oct 2025707 AMAQI
30th Oct 2025728 AMAQI
30th Oct 2025749 AMAQI
30th Oct 20257610 AMAQI
30th Oct 20257211 AMAQI
30th Oct 20256912 PMAQI
30th Oct 2025741 PMAQI
30th Oct 2025732 PMAQI
30th Oct 2025713 PMAQI
30th Oct 2025694 PMAQI
30th Oct 2025685 PMAQI
30th Oct 2025696 PMAQI
30th Oct 2025717 PMAQI
30th Oct 2025758 PMAQI
30th Oct 2025789 PMAQI
30th Oct 20258310 PMAQI
30th Oct 20258411 PMAQI
31st Oct 20258812 AMAQI
31st Oct 2025861 AMAQI
31st Oct 2025872 AMAQI
31st Oct 2025903 AMAQI
31st Oct 2025774 AMAQI
31st Oct 2025825 AMAQI
13°C10/17°C
31st Oct 2025836 AMAQI
31st Oct 2025937 AMAQI
31st Oct 2025958 AMAQI
31st Oct 2025929 AMAQI
31st Oct 20259410 AMAQI
31st Oct 20259511 AMAQI
31st Oct 20259512 PMAQI
31st Oct 2025791 PMAQI
31st Oct 2025632 PMAQI
31st Oct 2025623 PMAQI
31st Oct 2025594 PMAQI
31st Oct 2025625 PMAQI
31st Oct 2025606 PMAQI
31st Oct 2025697 PMAQI
31st Oct 20251038 PMAQI
31st Oct 20251099 PMAQI
31st Oct 202511410 PMAQI
31st Oct 202510611 PMAQI
1st Nov 20258112 AMAQI
1st Nov 2025651 AMAQI
1st Nov 2025632 AMAQI
1st Nov 2025623 AMAQI
1st Nov 2025644 AMAQI
1st Nov 2025655 AMAQI
15°C12/19°C
1st Nov 2025686 AMAQI
1st Nov 2025647 AMAQI
1st Nov 2025628 AMAQI
1st Nov 2025639 AMAQI
1st Nov 20255610 AMAQI
1st Nov 20255011 AMAQI
1st Nov 20255212 PMAQI
1st Nov 2025491 PMAQI
1st Nov 2025442 PMAQI
1st Nov 2025383 PMAQI
1st Nov 2025264 PMAQI
1st Nov 2025175 PMAQI
1st Nov 2025236 PMAQI
1st Nov 2025427 PMAQI
1st Nov 2025548 PMAQI
1st Nov 2025639 PMAQI
1st Nov 20256410 PMAQI
1st Nov 20256611 PMAQI
2nd Nov 20255812 AMAQI
2nd Nov 2025581 AMAQI
2nd Nov 2025442 AMAQI
2nd Nov 2025443 AMAQI
2nd Nov 2025494 AMAQI
2nd Nov 2025455 AMAQI
14°C12/16°C
2nd Nov 2025516 AMAQI
2nd Nov 2025517 AMAQI
2nd Nov 2025568 AMAQI
2nd Nov 2025499 AMAQI
2nd Nov 20254410 AMAQI
2nd Nov 20254511 AMAQI
2nd Nov 20254912 PMAQI
2nd Nov 2025461 PMAQI
2nd Nov 2025442 PMAQI
2nd Nov 2025403 PMAQI
2nd Nov 2025324 PMAQI
2nd Nov 2025235 PMAQI
2nd Nov 2025206 PMAQI
2nd Nov 2025287 PMAQI
2nd Nov 2025368 PMAQI
2nd Nov 2025399 PMAQI
2nd Nov 20253810 PMAQI
2nd Nov 20254411 PMAQI
3rd Nov 20254912 AMAQI
3rd Nov 2025481 AMAQI
3rd Nov 2025352 AMAQI
3rd Nov 2025333 AMAQI
3rd Nov 2025334 AMAQI
3rd Nov 2025345 AMAQI
10°C5/12°C
3rd Nov 2025426 AMAQI
3rd Nov 2025447 AMAQI
3rd Nov 2025448 AMAQI
3rd Nov 2025509 AMAQI
3rd Nov 20253910 AMAQI
3rd Nov 20255311 AMAQI
3rd Nov 20255512 PMAQI
3rd Nov 2025551 PMAQI
3rd Nov 2025542 PMAQI
3rd Nov 2025423 PMAQI
3rd Nov 2025444 PMAQI
3rd Nov 2025505 PMAQI
3rd Nov 2025476 PMAQI
3rd Nov 2025647 PMAQI
3rd Nov 2025568 PMAQI
3rd Nov 2025569 PMAQI
3rd Nov 20255610 PMAQI
3rd Nov 20257211 PMAQI
4th Nov 20257812 AMAQI
4th Nov 2025791 AMAQI
4th Nov 2025802 AMAQI
4th Nov 2025703 AMAQI
4th Nov 2025674 AMAQI
4th Nov 2025675 AMAQI
9°C4/13°C
4th Nov 2025556 AMAQI
4th Nov 2025557 AMAQI
4th Nov 2025558 AMAQI
4th Nov 2025619 AMAQI
4th Nov 20256510 AMAQI
4th Nov 20256611 AMAQI
4th Nov 20256612 PMAQI
4th Nov 2025671 PMAQI
4th Nov 2025642 PMAQI
4th Nov 2025643 PMAQI
4th Nov 2025724 PMAQI
4th Nov 2025685 PMAQI
4th Nov 2025676 PMAQI
4th Nov 2025727 PMAQI
4th Nov 2025778 PMAQI
4th Nov 2025779 PMAQI
4th Nov 20258410 PMAQI
4th Nov 20258811 PMAQI
5th Nov 20258512 AMAQI
5th Nov 2025831 AMAQI
5th Nov 2025802 AMAQI
5th Nov 2025813 AMAQI
5th Nov 2025844 AMAQI
5th Nov 2025785 AMAQI
11°C7/14°C
5th Nov 2025726 AMAQI
6 AM5th Nov 2025707 AMAQI
5th Nov 2025758 AMAQI
5th Nov 2025789 AMAQI
5th Nov 20258010 AMAQI
5th Nov 20257711 AMAQI
11 AM5th Nov 20257712 PMAQI
5th Nov 2025731 PMAQI
5th Nov 2025742 PMAQI
5th Nov 2025703 PMAQI
5th Nov 2025664 PMAQI
5th Nov 2025705 PMAQI
5 PM5th Nov 2025776 PMAQI
5th Nov 2025807 PMAQI
5th Nov 2025798 PMAQI
11 PM
5 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 1 PM
50AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
6 AM - 9 AM
47AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 1 PM (Avg. 50), while the lowest AQI was between 6 AM to 9 AM (Avg. 47).
Night time
Avg. Highest Time
10 PM - 11 PM
54AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
5 AM - 7 PM
48AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 54), while the lowest AQI was between 5 AM to 7 PM (Avg. 48).
2025 Days Vs Air Quality
Dongtan Dong, Osan, Gyeonggi, South Korea
2025
31%
95
63%
194
6%
18
0.3%
1
Total number of days with different AQI categories in last 309 days in 2025 (56 days remaining)
Good
95 DaysModerate
194 DaysPoor
18 DaysUnhealthy
1 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 31%
Health Risk Level:
High
In 2025, 31% of 309 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Dongtan Dong, Osan, 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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
79AQI
79AQI
2nd January 2025
61AQI
61AQI
3rd January 2025
63AQI
63AQI
4th January 2025
67AQI
67AQI
5th January 2025
69AQI
69AQI
6th January 2025
99AQI
99AQI
7th January 2025
58AQI
58AQI
8th January 2025
73AQI
73AQI
9th January 2025
44AQI
44AQI
10th January 2025
59AQI
59AQI
11th January 2025
59AQI
59AQI
12th January 2025
81AQI
81AQI
13th January 2025
89AQI
89AQI
14th January 2025
103AQI
103AQI
15th January 2025
58AQI
58AQI
16th January 2025
78AQI
78AQI
17th January 2025
88AQI
88AQI
18th January 2025
84AQI
84AQI
19th January 2025
89AQI
89AQI
20th January 2025
131AQI
131AQI
21st January 2025
148AQI
148AQI
22nd January 2025
152AQI
152AQI
23rd January 2025
131AQI
131AQI
24th January 2025
104AQI
104AQI
25th January 2025
73AQI
73AQI
26th January 2025
56AQI
56AQI
27th January 2025
69AQI
69AQI
28th January 2025
57AQI
57AQI
29th January 2025
65AQI
65AQI
30th January 2025
54AQI
54AQI
31st January 2025
76AQI
76AQI
1st February 2025
74AQI
74AQI
2nd February 2025
88AQI
88AQI
3rd February 2025
56AQI
56AQI
4th February 2025
55AQI
55AQI
5th February 2025
47AQI
47AQI
6th February 2025
59AQI
59AQI
7th February 2025
51AQI
51AQI
8th February 2025
50AQI
50AQI
9th February 2025
51AQI
51AQI
10th February 2025
61AQI
61AQI
11th February 2025
71AQI
71AQI
12th February 2025
79AQI
79AQI
13th February 2025
54AQI
54AQI
14th February 2025
97AQI
97AQI
15th February 2025
59AQI
59AQI
16th February 2025
115AQI
115AQI
17th February 2025
56AQI
56AQI
18th February 2025
68AQI
68AQI
19th February 2025
50AQI
50AQI
20th February 2025
62AQI
62AQI
21st February 2025
58AQI
58AQI
22nd February 2025
61AQI
61AQI
23rd February 2025
57AQI
57AQI
24th February 2025
61AQI
61AQI
25th February 2025
60AQI
60AQI
26th February 2025
73AQI
73AQI
27th February 2025
62AQI
62AQI
28th February 2025
85AQI
85AQI
1st March 2025
103AQI
103AQI
2nd March 2025
76AQI
76AQI
3rd March 2025
57AQI
57AQI
4th March 2025
47AQI
47AQI
5th March 2025
39AQI
39AQI
6th March 2025
80AQI
80AQI
7th March 2025
97AQI
97AQI
8th March 2025
92AQI
92AQI
9th March 2025
111AQI
111AQI
10th March 2025
118AQI
118AQI
11th March 2025
112AQI
112AQI
12th March 2025
112AQI
112AQI
13th March 2025
101AQI
101AQI
14th March 2025
86AQI
86AQI
15th March 2025
63AQI
63AQI
16th March 2025
80AQI
80AQI
17th March 2025
67AQI
67AQI
18th March 2025
76AQI
76AQI
19th March 2025
85AQI
85AQI
20th March 2025
94AQI
94AQI
21st March 2025
110AQI
110AQI
22nd March 2025
110AQI
110AQI
23rd March 2025
121AQI
121AQI
24th March 2025
122AQI
122AQI
25th March 2025
136AQI
136AQI
26th March 2025
94AQI
94AQI
27th March 2025
98AQI
98AQI
28th March 2025
65AQI
65AQI
29th March 2025
56AQI
56AQI
30th March 2025
50AQI
50AQI
31st March 2025
65AQI
65AQI
1st April 2025
81AQI
81AQI
2nd April 2025
89AQI
89AQI
3rd April 2025
84AQI
84AQI
4th April 2025
90AQI
90AQI
5th April 2025
78AQI
78AQI
6th April 2025
75AQI
75AQI
7th April 2025
75AQI
75AQI
8th April 2025
81AQI
81AQI
9th April 2025
74AQI
74AQI
10th April 2025
81AQI
81AQI
11th April 2025
91AQI
91AQI
12th April 2025
70AQI
70AQI
13th April 2025
67AQI
67AQI
14th April 2025
48AQI
48AQI
15th April 2025
61AQI
61AQI
16th April 2025
66AQI
66AQI
17th April 2025
72AQI
72AQI
18th April 2025
90AQI
90AQI
19th April 2025
60AQI
60AQI
20th April 2025
68AQI
68AQI
21st April 2025
56AQI
56AQI
22nd April 2025
50AQI
50AQI
23rd April 2025
36AQI
36AQI
24th April 2025
68AQI
68AQI
25th April 2025
65AQI
65AQI
26th April 2025
60AQI
60AQI
27th April 2025
46AQI
46AQI
28th April 2025
61AQI
61AQI
29th April 2025
73AQI
73AQI
30th April 2025
60AQI
60AQI
1st May 2025
65AQI
65AQI
2nd May 2025
54AQI
54AQI
3rd May 2025
54AQI
54AQI
4th May 2025
52AQI
52AQI
5th May 2025
57AQI
57AQI
6th May 2025
46AQI
46AQI
7th May 2025
59AQI
59AQI
8th May 2025
69AQI
69AQI
9th May 2025
53AQI
53AQI
10th May 2025
65AQI
65AQI
11th May 2025
76AQI
76AQI
12th May 2025
76AQI
76AQI
13th May 2025
77AQI
77AQI
14th May 2025
77AQI
77AQI
15th May 2025
67AQI
67AQI
16th May 2025
54AQI
54AQI
17th May 2025
54AQI
54AQI
18th May 2025
61AQI
61AQI
19th May 2025
64AQI
64AQI
20th May 2025
40AQI
40AQI
21st May 2025
51AQI
51AQI
22nd May 2025
47AQI
47AQI
23rd May 2025
66AQI
66AQI
24th May 2025
50AQI
50AQI
25th May 2025
54AQI
54AQI
26th May 2025
65AQI
65AQI
27th May 2025
87AQI
87AQI
28th May 2025
92AQI
92AQI
29th May 2025
84AQI
84AQI
30th May 2025
77AQI
77AQI
31st May 2025
87AQI
87AQI
1st June 2025
91AQI
91AQI
2nd June 2025
104AQI
104AQI
3rd June 2025
83AQI
83AQI
4th June 2025
64AQI
64AQI
5th June 2025
63AQI
63AQI
6th June 2025
61AQI
61AQI
7th June 2025
72AQI
72AQI
8th June 2025
60AQI
60AQI
9th June 2025
66AQI
66AQI
10th June 2025
56AQI
56AQI
11th June 2025
54AQI
54AQI
12th June 2025
61AQI
61AQI
13th June 2025
81AQI
81AQI
14th June 2025
62AQI
62AQI
15th June 2025
59AQI
59AQI
16th June 2025
65AQI
65AQI
17th June 2025
66AQI
66AQI
18th June 2025
69AQI
69AQI
19th June 2025
66AQI
66AQI
20th June 2025
51AQI
51AQI
21st June 2025
61AQI
61AQI
22nd June 2025
71AQI
71AQI
23rd June 2025
73AQI
73AQI
24th June 2025
66AQI
66AQI
25th June 2025
54AQI
54AQI
26th June 2025
59AQI
59AQI
27th June 2025
67AQI
67AQI
28th June 2025
64AQI
64AQI
29th June 2025
52AQI
52AQI
30th June 2025
49AQI
49AQI
1st July 2025
47AQI
47AQI
2nd July 2025
45AQI
45AQI
3rd July 2025
53AQI
53AQI
4th July 2025
50AQI
50AQI
5th July 2025
51AQI
51AQI
6th July 2025
53AQI
53AQI
7th July 2025
64AQI
64AQI
8th July 2025
66AQI
66AQI
9th July 2025
58AQI
58AQI
10th July 2025
54AQI
54AQI
11th July 2025
52AQI
52AQI
12th July 2025
50AQI
50AQI
13th July 2025
61AQI
61AQI
14th July 2025
59AQI
59AQI
15th July 2025
46AQI
46AQI
16th July 2025
52AQI
52AQI
17th July 2025
44AQI
44AQI
18th July 2025
46AQI
46AQI
19th July 2025
40AQI
40AQI
20th July 2025
43AQI
43AQI
21st July 2025
43AQI
43AQI
22nd July 2025
41AQI
41AQI
23rd July 2025
45AQI
45AQI
24th July 2025
52AQI
52AQI
25th July 2025
57AQI
57AQI
26th July 2025
50AQI
50AQI
27th July 2025
46AQI
46AQI
28th July 2025
60AQI
60AQI
29th July 2025
67AQI
67AQI
30th July 2025
60AQI
60AQI
31st July 2025
59AQI
59AQI
1st August 2025
58AQI
58AQI
2nd August 2025
61AQI
61AQI
3rd August 2025
61AQI
61AQI
4th August 2025
49AQI
49AQI
5th August 2025
51AQI
51AQI
6th August 2025
45AQI
45AQI
7th August 2025
51AQI
51AQI
8th August 2025
56AQI
56AQI
9th August 2025
55AQI
55AQI
10th August 2025
55AQI
55AQI
11th August 2025
57AQI
57AQI
12th August 2025
50AQI
50AQI
13th August 2025
40AQI
40AQI
14th August 2025
43AQI
43AQI
15th August 2025
40AQI
40AQI
16th August 2025
38AQI
38AQI
17th August 2025
41AQI
41AQI
18th August 2025
50AQI
50AQI
19th August 2025
45AQI
45AQI
20th August 2025
46AQI
46AQI
21st August 2025
48AQI
48AQI
22nd August 2025
47AQI
47AQI
23rd August 2025
50AQI
50AQI
24th August 2025
53AQI
53AQI
25th August 2025
48AQI
48AQI
26th August 2025
44AQI
44AQI
27th August 2025
52AQI
52AQI
28th August 2025
53AQI
53AQI
29th August 2025
44AQI
44AQI
30th August 2025
43AQI
43AQI
31st August 2025
48AQI
48AQI
1st September 2025
41AQI
41AQI
2nd September 2025
49AQI
49AQI
3rd September 2025
50AQI
50AQI
4th September 2025
38AQI
38AQI
5th September 2025
33AQI
33AQI
6th September 2025
38AQI
38AQI
7th September 2025
41AQI
41AQI
8th September 2025
47AQI
47AQI
9th September 2025
55AQI
55AQI
10th September 2025
49AQI
49AQI
11th September 2025
47AQI
47AQI
12th September 2025
47AQI
47AQI
13th September 2025
37AQI
37AQI
14th September 2025
41AQI
41AQI
15th September 2025
48AQI
48AQI
16th September 2025
43AQI
43AQI
17th September 2025
37AQI
37AQI
18th September 2025
32AQI
32AQI
19th September 2025
33AQI
33AQI
20th September 2025
29AQI
29AQI
21st September 2025
26AQI
26AQI
22nd September 2025
29AQI
29AQI
23rd September 2025
29AQI
29AQI
24th September 2025
31AQI
31AQI
25th September 2025
44AQI
44AQI
26th September 2025
72AQI
72AQI
27th September 2025
60AQI
60AQI
28th September 2025
49AQI
49AQI
29th September 2025
60AQI
60AQI
30th September 2025
63AQI
63AQI
1st October 2025
75AQI
75AQI
2nd October 2025
61AQI
61AQI
3rd October 2025
62AQI
62AQI
4th October 2025
41AQI
41AQI
5th October 2025
44AQI
44AQI
6th October 2025
39AQI
39AQI
7th October 2025
37AQI
37AQI
8th October 2025
47AQI
47AQI
9th October 2025
45AQI
45AQI
10th October 2025
41AQI
41AQI
11th October 2025
49AQI
49AQI
12th October 2025
49AQI
49AQI
13th October 2025
37AQI
37AQI
14th October 2025
38AQI
38AQI
15th October 2025
51AQI
51AQI
16th October 2025
36AQI
36AQI
17th October 2025
39AQI
39AQI
18th October 2025
44AQI
44AQI
19th October 2025
60AQI
60AQI
20th October 2025
57AQI
57AQI
21st October 2025
60AQI
60AQI
22nd October 2025
43AQI
43AQI
23rd October 2025
25AQI
25AQI
24th October 2025
33AQI
33AQI
25th October 2025
50AQI
50AQI
26th October 2025
70AQI
70AQI
27th October 2025
58AQI
58AQI
28th October 2025
33AQI
33AQI
29th October 2025
57AQI
57AQI
30th October 2025
73AQI
73AQI
31st October 2025
86AQI
86AQI
1st November 2025
61AQI
61AQI
2nd November 2025
45AQI
45AQI
3rd November 2025
49AQI
49AQI
4th November 2025
70AQI
70AQI
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
81AQI
65AQI
88AQI
69AQI
64AQI
66AQI
52AQI
49AQI
43AQI
50AQI
56AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202563AQI
1
24
5
1
3
24
1
3
17
11
4
26
4
27
1
28
1
14
17
19
12
25
5
19
12
2
2
95
194
18
1
Highest AQI recorded in
March88AQI
Lowest AQI recorded in
September43AQI
202461AQI
9
15
7
9
13
6
1
6
21
3
1
4
18
4
12
18
1
5
25
25
6
17
14
24
6
16
15
8
21
1
1
29
1
136
201
23
2
Highest AQI recorded in
March79AQI
Lowest AQI recorded in
July38AQI
202367AQI
10
12
6
3
2
18
4
4
2
16
13
3
21
5
1
7
22
2
5
25
15
14
2
21
10
14
15
1
14
15
2
13
14
2
11
13
6
1
117
195
43
9
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
August45AQI
202266AQI
6
18
4
2
7
7
6
1
7
16
8
6
19
4
7
22
2
17
13
8
15
1
20
6
2
16
12
3
8
16
6
9
19
3
112
163
38
3
Highest AQI recorded in
February81AQI
Lowest AQI recorded in
August20AQI
202165AQI
11
17
3
10
11
5
2
3
17
9
1
1
9
19
2
9
17
3
1
1
3
24
3
15
16
17
14
27
3
19
11
1
9
16
3
2
13
10
8
145
175
37
5
2
1
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September33AQI
202070AQI
3
9
1
2
17
2
3
8
7
2
21
7
11
19
1
15
14
2
14
16
8
19
4
9
13
8
11
11
8
1
78
147
40
1
Highest AQI recorded in
June86AQI
Lowest AQI recorded in
September54AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
70AQILeast Polluted Year Recorded
2024(Avg.)
61AQIDongtan Dong's annual 2025 AQI (63) shows an average percentage change of -4.5% (improved AQI) compared to previous years: 2020 (70), 2021 (65), 2022 (66), 2023 (67), 2024 (61).
