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+
August Air Quality Analysis
Osan, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Aug 2021
91AQILowest AQI recorded on
2nd Aug 2022
22AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 57 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: 2nd Aug - 3rd Aug 2025
Osan, Gyeonggi, South Korea
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM2nd Aug
82AQI
Avg. Lowest Time
3PM2nd Aug
54AQI
In the last 24 hours,
Osan's AQI reached its highest point of 82 at 12 PM during the Night, while the lowest point, 54, was recorded at 3 PM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Osan, Gyeonggi, South Korea
JulAug
04th - 05th05th - 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
Day
Night
4th Jul 2025535 AMAQI
4th Jul 2025536 AMAQI
4th Jul 2025537 AMAQI
4th Jul 2025538 AMAQI
4th Jul 2025539 AMAQI
4th Jul 20255410 AMAQI
4th Jul 20255811 AMAQI
4th Jul 20255812 PMAQI
4th Jul 2025561 PMAQI
4th Jul 2025542 PMAQI
4th Jul 2025543 PMAQI
4th Jul 2025524 PMAQI
4th Jul 2025525 PMAQI
4th Jul 2025486 PMAQI
4th Jul 2025477 PMAQI
4th Jul 2025508 PMAQI
4th Jul 2025529 PMAQI
4th Jul 20255310 PMAQI
4th Jul 20255311 PMAQI
5th Jul 20255312 AMAQI
5th Jul 2025521 AMAQI
5th Jul 2025522 AMAQI
5th Jul 2025523 AMAQI
5th Jul 2025524 AMAQI
26°C22/30°C
5th Jul 2025535 AMAQI
5th Jul 2025536 AMAQI
5th Jul 2025537 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025449 AMAQI
5th Jul 20254210 AMAQI
5th Jul 20254411 AMAQI
5th Jul 20254912 PMAQI
5th Jul 2025481 PMAQI
5th Jul 2025532 PMAQI
5th Jul 2025503 PMAQI
5th Jul 2025504 PMAQI
5th Jul 2025515 PMAQI
5th Jul 2025506 PMAQI
5th Jul 2025507 PMAQI
5th Jul 2025498 PMAQI
5th Jul 2025529 PMAQI
5th Jul 20255310 PMAQI
5th Jul 20255311 PMAQI
6th Jul 20255312 AMAQI
6th Jul 2025521 AMAQI
6th Jul 2025522 AMAQI
6th Jul 2025523 AMAQI
6th Jul 2025524 AMAQI
27°C22/32°C
6th Jul 2025525 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025528 AMAQI
6th Jul 2025529 AMAQI
6th Jul 20255310 AMAQI
6th Jul 20255611 AMAQI
6th Jul 20256112 PMAQI
6th Jul 2025581 PMAQI
6th Jul 2025582 PMAQI
6th Jul 2025593 PMAQI
6th Jul 2025594 PMAQI
6th Jul 2025605 PMAQI
6th Jul 2025606 PMAQI
6th Jul 2025587 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025539 PMAQI
6th Jul 20255310 PMAQI
6th Jul 20255211 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025533 AMAQI
7th Jul 2025534 AMAQI
27°C23/33°C
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025537 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025679 AMAQI
7th Jul 20256910 AMAQI
7th Jul 20258311 AMAQI
7th Jul 20258112 PMAQI
7th Jul 2025791 PMAQI
7th Jul 2025832 PMAQI
7th Jul 2025903 PMAQI
7th Jul 2025894 PMAQI
7th Jul 2025885 PMAQI
7th Jul 2025886 PMAQI
7th Jul 2025907 PMAQI
7th Jul 2025828 PMAQI
7th Jul 2025669 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256511 PMAQI
8th Jul 20256512 AMAQI
8th Jul 2025651 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025533 AMAQI
8th Jul 2025544 AMAQI
28°C24/33°C
8th Jul 2025575 AMAQI
8th Jul 2025576 AMAQI
8th Jul 2025577 AMAQI
8th Jul 2025588 AMAQI
8th Jul 2025919 AMAQI
8th Jul 20259510 AMAQI
8th Jul 20259011 AMAQI
8th Jul 20258512 PMAQI
8th Jul 2025821 PMAQI
8th Jul 2025822 PMAQI
8th Jul 2025813 PMAQI
8th Jul 2025824 PMAQI
8th Jul 2025825 PMAQI
8th Jul 2025836 PMAQI
8th Jul 2025847 PMAQI
8th Jul 2025788 PMAQI
8th Jul 2025679 PMAQI
8th Jul 20255810 PMAQI
8th Jul 20255811 PMAQI
9th Jul 20255812 AMAQI
9th Jul 2025581 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025583 AMAQI
9th Jul 2025604 AMAQI
29°C24/36°C
9th Jul 2025645 AMAQI
9th Jul 2025646 AMAQI
9th Jul 2025647 AMAQI
9th Jul 2025648 AMAQI
9th Jul 2025609 AMAQI
9th Jul 20255810 AMAQI
9th Jul 20255911 AMAQI
9th Jul 20256012 PMAQI
9th Jul 2025611 PMAQI
9th Jul 2025592 PMAQI
9th Jul 2025553 PMAQI
9th Jul 2025524 PMAQI
9th Jul 2025525 PMAQI
9th Jul 2025526 PMAQI
9th Jul 2025527 PMAQI
9th Jul 2025568 PMAQI
9th Jul 2025579 PMAQI
9th Jul 20255810 PMAQI
9th Jul 20255811 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025581 AMAQI
10th Jul 2025582 AMAQI
10th Jul 2025603 AMAQI
10th Jul 2025604 AMAQI
30°C25/35°C
10th Jul 2025605 AMAQI
10th Jul 2025606 AMAQI
10th Jul 2025607 AMAQI
10th Jul 2025608 AMAQI
10th Jul 2025449 AMAQI
10th Jul 20253910 AMAQI
10th Jul 20253911 AMAQI
10th Jul 20253812 PMAQI
10th Jul 2025431 PMAQI
10th Jul 2025452 PMAQI
10th Jul 2025483 PMAQI
10th Jul 2025484 PMAQI
10th Jul 2025475 PMAQI
10th Jul 2025486 PMAQI
10th Jul 2025427 PMAQI
10th Jul 2025478 PMAQI
10th Jul 2025559 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
28°C23/34°C
11th Jul 2025565 AMAQI
11th Jul 2025586 AMAQI
11th Jul 2025567 AMAQI
11th Jul 2025568 AMAQI
11th Jul 2025449 AMAQI
11th Jul 20253910 AMAQI
11th Jul 20253411 AMAQI
11th Jul 20253612 PMAQI
11th Jul 2025421 PMAQI
11th Jul 2025422 PMAQI
11th Jul 2025423 PMAQI
11th Jul 2025434 PMAQI
11th Jul 2025435 PMAQI
11th Jul 2025436 PMAQI
11th Jul 2025447 PMAQI
11th Jul 2025488 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 2025564 AMAQI
27°C21/34°C
12th Jul 2025555 AMAQI
12th Jul 2025556 AMAQI
12th Jul 2025557 AMAQI
12th Jul 2025558 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20253610 AMAQI
12th Jul 20253211 AMAQI
12th Jul 20253412 PMAQI
12th Jul 2025401 PMAQI
12th Jul 2025372 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025384 PMAQI
12th Jul 2025475 PMAQI
12th Jul 2025356 PMAQI
12th Jul 2025377 PMAQI
12th Jul 2025458 PMAQI
12th Jul 2025539 PMAQI
12th Jul 20255610 PMAQI
12th Jul 20255711 PMAQI
13th Jul 20255812 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025553 AMAQI
13th Jul 2025554 AMAQI
27°C20/33°C
13th Jul 2025545 AMAQI
13th Jul 2025536 AMAQI
13th Jul 2025547 AMAQI
13th Jul 2025548 AMAQI
13th Jul 2025639 AMAQI
13th Jul 20257110 AMAQI
13th Jul 20257111 AMAQI
13th Jul 20257112 PMAQI
13th Jul 2025751 PMAQI
13th Jul 2025752 PMAQI
13th Jul 2025763 PMAQI
13th Jul 2025744 PMAQI
13th Jul 2025715 PMAQI
13th Jul 2025716 PMAQI
13th Jul 2025737 PMAQI
13th Jul 2025748 PMAQI
13th Jul 2025659 PMAQI
13th Jul 20256610 PMAQI
13th Jul 20256811 PMAQI
14th Jul 20256612 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025564 AMAQI
24°C21/29°C
14th Jul 2025585 AMAQI
14th Jul 2025586 AMAQI
14th Jul 2025587 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025779 AMAQI
14th Jul 20258510 AMAQI
14th Jul 20258511 AMAQI
14th Jul 20259012 PMAQI
14th Jul 2025841 PMAQI
14th Jul 2025792 PMAQI
14th Jul 2025723 PMAQI
14th Jul 2025594 PMAQI
14th Jul 2025465 PMAQI
14th Jul 2025396 PMAQI
14th Jul 2025367 PMAQI
14th Jul 2025408 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 PMAQI
15th Jul 20255212 AMAQI
15th Jul 2025561 AMAQI
15th Jul 2025572 AMAQI
15th Jul 2025583 AMAQI
15th Jul 2025594 AMAQI
23°C20/27°C
15th Jul 2025615 AMAQI
15th Jul 2025616 AMAQI
15th Jul 2025617 AMAQI
15th Jul 2025628 AMAQI
15th Jul 2025299 AMAQI
15th Jul 20251810 AMAQI
15th Jul 20251811 AMAQI
15th Jul 20252112 PMAQI
15th Jul 2025351 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025313 PMAQI
15th Jul 2025274 PMAQI
15th Jul 2025295 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025347 PMAQI
15th Jul 2025408 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255311 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025571 AMAQI
16th Jul 2025572 AMAQI
16th Jul 2025573 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 2025619 AMAQI
16th Jul 20256410 AMAQI
16th Jul 20256411 AMAQI
16th Jul 20256212 PMAQI
16th Jul 2025531 PMAQI
16th Jul 2025522 PMAQI
16th Jul 2025533 PMAQI
16th Jul 2025544 PMAQI
16th Jul 2025535 PMAQI
16th Jul 2025496 PMAQI
16th Jul 2025337 PMAQI
16th Jul 2025378 PMAQI
16th Jul 2025489 PMAQI
16th Jul 20254810 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20255212 AMAQI
17th Jul 2025551 AMAQI
17th Jul 2025552 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025554 AMAQI
22°C20/24°C
17th Jul 2025565 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025279 AMAQI
17th Jul 20251610 AMAQI
17th Jul 20251611 AMAQI
17th Jul 20251512 PMAQI
17th Jul 2025221 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025243 PMAQI
17th Jul 2025244 PMAQI
17th Jul 2025255 PMAQI
17th Jul 2025256 PMAQI
17th Jul 2025257 PMAQI
17th Jul 2025318 PMAQI
17th Jul 2025459 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025552 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025544 AMAQI
23°C21/26°C
18th Jul 2025525 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025528 AMAQI
18th Jul 2025309 AMAQI
18th Jul 20252210 AMAQI
18th Jul 20252311 AMAQI
18th Jul 20252512 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025383 PMAQI
18th Jul 2025424 PMAQI
18th Jul 2025375 PMAQI
18th Jul 2025376 PMAQI
18th Jul 2025367 PMAQI
18th Jul 2025428 PMAQI
18th Jul 2025499 PMAQI
18th Jul 20254810 PMAQI
18th Jul 20255111 PMAQI
19th Jul 20255212 AMAQI
19th Jul 2025521 AMAQI
19th Jul 2025522 AMAQI
19th Jul 2025523 AMAQI
19th Jul 2025514 AMAQI
23°C22/27°C
19th Jul 2025495 AMAQI
19th Jul 2025496 AMAQI
19th Jul 2025497 AMAQI
19th Jul 2025498 AMAQI
19th Jul 2025249 AMAQI
19th Jul 20251610 AMAQI
19th Jul 20251411 AMAQI
19th Jul 20251512 PMAQI
19th Jul 2025191 PMAQI
19th Jul 2025182 PMAQI
19th Jul 2025183 PMAQI
19th Jul 2025214 PMAQI
19th Jul 2025215 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20254110 PMAQI
19th Jul 20254111 PMAQI
20th Jul 20254012 AMAQI
20th Jul 2025481 AMAQI
20th Jul 2025512 AMAQI
20th Jul 2025513 AMAQI
20th Jul 2025494 AMAQI
25°C22/28°C
20th Jul 2025465 AMAQI
20th Jul 2025466 AMAQI
20th Jul 2025467 AMAQI
20th Jul 2025468 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20253011 AMAQI
20th Jul 20253112 PMAQI
20th Jul 2025331 PMAQI
20th Jul 2025342 PMAQI
20th Jul 2025333 PMAQI
20th Jul 2025344 PMAQI
20th Jul 2025395 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025337 PMAQI
20th Jul 2025368 PMAQI
20th Jul 2025439 PMAQI
20th Jul 20254710 PMAQI
20th Jul 20254611 PMAQI
21st Jul 20254712 AMAQI
21st Jul 2025461 AMAQI
21st Jul 2025472 AMAQI
21st Jul 2025473 AMAQI
21st Jul 2025464 AMAQI
27°C23/31°C
21st Jul 2025445 AMAQI
21st Jul 2025456 AMAQI
21st Jul 2025447 AMAQI
21st Jul 2025448 AMAQI
21st Jul 2025529 AMAQI
21st Jul 20255010 AMAQI
21st Jul 20254311 AMAQI
21st Jul 20254212 PMAQI
21st Jul 2025411 PMAQI
21st Jul 2025382 PMAQI
21st Jul 2025333 PMAQI
21st Jul 2025334 PMAQI
21st Jul 2025325 PMAQI
21st Jul 2025316 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20253810 PMAQI
21st Jul 20253711 PMAQI
22nd Jul 20253812 AMAQI
22nd Jul 2025441 AMAQI
22nd Jul 2025462 AMAQI
22nd Jul 2025463 AMAQI
22nd Jul 2025464 AMAQI
27°C24/31°C
22nd Jul 2025465 AMAQI
22nd Jul 2025466 AMAQI
22nd Jul 2025467 AMAQI
22nd Jul 2025458 AMAQI
22nd Jul 2025329 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20253111 AMAQI
22nd Jul 20253912 PMAQI
22nd Jul 2025401 PMAQI
22nd Jul 2025402 PMAQI
22nd Jul 2025403 PMAQI
22nd Jul 2025404 PMAQI
22nd Jul 2025405 PMAQI
22nd Jul 2025416 PMAQI
22nd Jul 2025407 PMAQI
22nd Jul 2025408 PMAQI
22nd Jul 2025429 PMAQI
22nd Jul 20253910 PMAQI
22nd Jul 20254011 PMAQI
23rd Jul 20254312 AMAQI
23rd Jul 2025441 AMAQI
23rd Jul 2025442 AMAQI
23rd Jul 2025443 AMAQI
23rd Jul 2025444 AMAQI
27°C23/31°C
23rd Jul 2025435 AMAQI
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025438 AMAQI
23rd Jul 2025469 AMAQI
23rd Jul 20254410 AMAQI
23rd Jul 20254611 AMAQI
23rd Jul 20255012 PMAQI
23rd Jul 2025511 PMAQI
23rd Jul 2025542 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025564 PMAQI
23rd Jul 2025605 PMAQI
23rd Jul 2025616 PMAQI
23rd Jul 2025587 PMAQI
23rd Jul 2025518 PMAQI
23rd Jul 2025499 PMAQI
23rd Jul 20254810 PMAQI
23rd Jul 20254811 PMAQI
24th Jul 20254612 AMAQI
24th Jul 2025441 AMAQI
24th Jul 2025442 AMAQI
24th Jul 2025443 AMAQI
24th Jul 2025454 AMAQI
27°C23/31°C
24th Jul 2025465 AMAQI
24th Jul 2025456 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025509 AMAQI
24th Jul 20255210 AMAQI
24th Jul 20255711 AMAQI
24th Jul 20255912 PMAQI
24th Jul 2025581 PMAQI
24th Jul 2025622 PMAQI
24th Jul 2025653 PMAQI
24th Jul 2025684 PMAQI
24th Jul 2025685 PMAQI
24th Jul 2025686 PMAQI
24th Jul 2025687 PMAQI
24th Jul 2025648 PMAQI
24th Jul 2025589 PMAQI
24th Jul 20255810 PMAQI
24th Jul 20255811 PMAQI
25th Jul 20255712 AMAQI
25th Jul 2025571 AMAQI
25th Jul 2025492 AMAQI
25th Jul 2025463 AMAQI
25th Jul 2025474 AMAQI
27°C23/32°C
25th Jul 2025505 AMAQI
25th Jul 2025506 AMAQI
25th Jul 2025507 AMAQI
25th Jul 2025508 AMAQI
25th Jul 2025709 AMAQI
25th Jul 20257710 AMAQI
25th Jul 20257311 AMAQI
25th Jul 20257212 PMAQI
25th Jul 2025711 PMAQI
25th Jul 2025722 PMAQI
25th Jul 2025683 PMAQI
25th Jul 2025654 PMAQI
25th Jul 2025635 PMAQI
25th Jul 2025676 PMAQI
25th Jul 2025697 PMAQI
25th Jul 2025648 PMAQI
25th Jul 2025619 PMAQI
25th Jul 20256210 PMAQI
25th Jul 20256311 PMAQI
26th Jul 20256312 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025523 AMAQI
26th Jul 2025534 AMAQI
29°C24/34°C
26th Jul 2025565 AMAQI
26th Jul 2025566 AMAQI
26th Jul 2025567 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025489 AMAQI
26th Jul 20253410 AMAQI
26th Jul 20253111 AMAQI
26th Jul 20253412 PMAQI
26th Jul 2025361 PMAQI
26th Jul 2025452 PMAQI
26th Jul 2025423 PMAQI
26th Jul 2025374 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025346 PMAQI
26th Jul 2025387 PMAQI
26th Jul 2025468 PMAQI
26th Jul 2025549 PMAQI
26th Jul 20255410 PMAQI
26th Jul 20255311 PMAQI
27th Jul 20255412 AMAQI
27th Jul 2025551 AMAQI
27th Jul 2025552 AMAQI
27th Jul 2025553 AMAQI
27th Jul 2025544 AMAQI
30°C25/35°C
27th Jul 2025535 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025537 AMAQI
27th Jul 2025538 AMAQI
27th Jul 2025419 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025251 PMAQI
27th Jul 2025252 PMAQI
27th Jul 2025253 PMAQI
27th Jul 2025264 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025286 PMAQI
27th Jul 2025377 PMAQI
27th Jul 2025488 PMAQI
27th Jul 2025569 PMAQI
27th Jul 20255710 PMAQI
27th Jul 20255711 PMAQI
28th Jul 20256012 AMAQI
28th Jul 2025551 AMAQI
28th Jul 2025542 AMAQI
28th Jul 2025543 AMAQI
28th Jul 2025534 AMAQI
30°C25/35°C
28th Jul 2025515 AMAQI
28th Jul 2025516 AMAQI
28th Jul 2025517 AMAQI
28th Jul 2025518 AMAQI
28th Jul 2025729 AMAQI
28th Jul 20258010 AMAQI
28th Jul 20258111 AMAQI
28th Jul 20257812 PMAQI
28th Jul 2025721 PMAQI
28th Jul 2025692 PMAQI
28th Jul 2025703 PMAQI
28th Jul 2025674 PMAQI
28th Jul 2025635 PMAQI
28th Jul 2025626 PMAQI
28th Jul 2025637 PMAQI
28th Jul 2025648 PMAQI
28th Jul 2025629 PMAQI
28th Jul 20256310 PMAQI
28th Jul 20256311 PMAQI
29th Jul 20256112 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025542 AMAQI
29th Jul 2025543 AMAQI
29th Jul 2025564 AMAQI
28°C25/33°C
29th Jul 2025585 AMAQI
29th Jul 2025586 AMAQI
29th Jul 2025587 AMAQI
29th Jul 2025588 AMAQI
29th Jul 2025719 AMAQI
29th Jul 20258210 AMAQI
29th Jul 20259011 AMAQI
29th Jul 20259012 PMAQI
29th Jul 2025851 PMAQI
29th Jul 2025852 PMAQI
29th Jul 2025813 PMAQI
29th Jul 2025774 PMAQI
29th Jul 2025755 PMAQI
29th Jul 2025836 PMAQI
29th Jul 2025857 PMAQI
29th Jul 2025798 PMAQI
29th Jul 2025649 PMAQI
29th Jul 20256310 PMAQI
29th Jul 20256211 PMAQI
30th Jul 20256112 AMAQI
30th Jul 2025571 AMAQI
30th Jul 2025572 AMAQI
30th Jul 2025573 AMAQI
30th Jul 2025594 AMAQI
29°C24/35°C
30th Jul 2025625 AMAQI
30th Jul 2025626 AMAQI
30th Jul 2025627 AMAQI
30th Jul 2025628 AMAQI
30th Jul 2025759 AMAQI
30th Jul 20257710 AMAQI
30th Jul 20257411 AMAQI
30th Jul 20257112 PMAQI
30th Jul 2025711 PMAQI
30th Jul 2025672 PMAQI
30th Jul 2025593 PMAQI
30th Jul 2025534 PMAQI
30th Jul 2025535 PMAQI
30th Jul 2025506 PMAQI
30th Jul 2025507 PMAQI
30th Jul 2025548 PMAQI
30th Jul 2025589 PMAQI
30th Jul 20255810 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20255912 AMAQI
31st Jul 2025591 AMAQI
31st Jul 2025592 AMAQI
31st Jul 2025593 AMAQI
31st Jul 2025594 AMAQI
29°C24/34°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 20255811 AMAQI
31st Jul 20255812 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025702 PMAQI
31st Jul 2025703 PMAQI
31st Jul 2025674 PMAQI
31st Jul 2025655 PMAQI
31st Jul 2025646 PMAQI
31st Jul 2025657 PMAQI
31st Jul 2025618 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255510 PMAQI
31st Jul 20255511 PMAQI
1st Aug 20255612 AMAQI
1st Aug 2025551 AMAQI
1st Aug 2025552 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025564 AMAQI
28°C25/32°C
1st Aug 2025565 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025559 AMAQI
1st Aug 20256010 AMAQI
1st Aug 20255511 AMAQI
1st Aug 20255712 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025612 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025624 PMAQI
1st Aug 2025655 PMAQI
1st Aug 2025606 PMAQI
1st Aug 2025597 PMAQI
1st Aug 2025578 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20256011 PMAQI
2nd Aug 20255912 AMAQI
2nd Aug 2025551 AMAQI
2nd Aug 2025552 AMAQI
2nd Aug 2025553 AMAQI
2nd Aug 2025564 AMAQI
28°C24/34°C
2nd Aug 2025555 AMAQI
2nd Aug 2025556 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025759 AMAQI
2nd Aug 20257810 AMAQI
2nd Aug 20257311 AMAQI
2nd Aug 20258212 PMAQI
2nd Aug 2025801 PMAQI
2nd Aug 2025572 PMAQI
2nd Aug 2025543 PMAQI
2nd Aug 2025604 PMAQI
2nd Aug 2025575 PMAQI
2nd Aug 2025656 PMAQI
2nd Aug 2025617 PMAQI
2nd Aug 2025588 PMAQI
2nd Aug 2025599 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025551 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025584 AMAQI
--°C/°C
3rd Aug 2025585 AMAQI
5 AM3rd Aug 2025586 AMAQI
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
5 AM - 7 PM
53AQI
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. 53), while the lowest AQI was between 5 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
Osan, Gyeonggi, South Korea
2025
16%
35
75%
160
8%
18
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
35 DaysModerate
160 DaysPoor
18 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 16%
Health Risk Level:
Extreme
In 2025, 16% of 214 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
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.
1st January 2025
77AQI
77AQI
2nd January 2025
63AQI
63AQI
3rd January 2025
63AQI
63AQI
4th January 2025
66AQI
66AQI
5th January 2025
69AQI
69AQI
6th January 2025
98AQI
98AQI
7th January 2025
57AQI
57AQI
8th January 2025
71AQI
71AQI
9th January 2025
43AQI
43AQI
10th January 2025
57AQI
57AQI
11th January 2025
58AQI
58AQI
12th January 2025
81AQI
81AQI
13th January 2025
88AQI
88AQI
14th January 2025
101AQI
101AQI
15th January 2025
56AQI
56AQI
16th January 2025
77AQI
77AQI
17th January 2025
86AQI
86AQI
18th January 2025
84AQI
84AQI
19th January 2025
87AQI
87AQI
20th January 2025
131AQI
131AQI
21st January 2025
144AQI
144AQI
22nd January 2025
150AQI
150AQI
23rd January 2025
130AQI
130AQI
24th January 2025
107AQI
107AQI
25th January 2025
75AQI
75AQI
26th January 2025
57AQI
57AQI
27th January 2025
68AQI
68AQI
28th January 2025
55AQI
55AQI
29th January 2025
60AQI
60AQI
30th January 2025
52AQI
52AQI
31st January 2025
73AQI
73AQI
1st February 2025
74AQI
74AQI
2nd February 2025
86AQI
86AQI
3rd February 2025
53AQI
53AQI
4th February 2025
53AQI
53AQI
5th February 2025
44AQI
44AQI
6th February 2025
56AQI
56AQI
7th February 2025
47AQI
47AQI
8th February 2025
45AQI
45AQI
9th February 2025
49AQI
49AQI
10th February 2025
58AQI
58AQI
11th February 2025
71AQI
71AQI
12th February 2025
76AQI
76AQI
13th February 2025
51AQI
51AQI
14th February 2025
92AQI
92AQI
15th February 2025
58AQI
58AQI
16th February 2025
114AQI
114AQI
17th February 2025
51AQI
51AQI
18th February 2025
63AQI
63AQI
19th February 2025
47AQI
47AQI
20th February 2025
57AQI
57AQI
21st February 2025
54AQI
54AQI
22nd February 2025
58AQI
58AQI
23rd February 2025
54AQI
54AQI
24th February 2025
58AQI
58AQI
25th February 2025
56AQI
56AQI
26th February 2025
71AQI
71AQI
27th February 2025
60AQI
60AQI
28th February 2025
83AQI
83AQI
1st March 2025
101AQI
101AQI
2nd March 2025
73AQI
73AQI
3rd March 2025
56AQI
56AQI
4th March 2025
46AQI
46AQI
5th March 2025
37AQI
37AQI
6th March 2025
78AQI
78AQI
7th March 2025
94AQI
94AQI
8th March 2025
91AQI
91AQI
9th March 2025
108AQI
108AQI
10th March 2025
114AQI
114AQI
11th March 2025
110AQI
110AQI
12th March 2025
107AQI
107AQI
13th March 2025
98AQI
98AQI
14th March 2025
83AQI
83AQI
15th March 2025
58AQI
58AQI
16th March 2025
76AQI
76AQI
17th March 2025
64AQI
64AQI
18th March 2025
73AQI
73AQI
19th March 2025
82AQI
82AQI
20th March 2025
91AQI
91AQI
21st March 2025
105AQI
105AQI
22nd March 2025
108AQI
108AQI
23rd March 2025
117AQI
117AQI
24th March 2025
117AQI
117AQI
25th March 2025
133AQI
133AQI
26th March 2025
94AQI
94AQI
27th March 2025
95AQI
95AQI
28th March 2025
63AQI
63AQI
29th March 2025
51AQI
51AQI
30th March 2025
48AQI
48AQI
31st March 2025
63AQI
63AQI
1st April 2025
79AQI
79AQI
2nd April 2025
86AQI
86AQI
3rd April 2025
83AQI
83AQI
4th April 2025
88AQI
88AQI
5th April 2025
77AQI
77AQI
6th April 2025
73AQI
73AQI
7th April 2025
74AQI
74AQI
8th April 2025
80AQI
80AQI
9th April 2025
72AQI
72AQI
10th April 2025
79AQI
79AQI
11th April 2025
91AQI
91AQI
12th April 2025
67AQI
67AQI
13th April 2025
66AQI
66AQI
14th April 2025
46AQI
46AQI
15th April 2025
60AQI
60AQI
16th April 2025
63AQI
63AQI
17th April 2025
71AQI
71AQI
18th April 2025
87AQI
87AQI
19th April 2025
58AQI
58AQI
20th April 2025
67AQI
67AQI
21st April 2025
55AQI
55AQI
22nd April 2025
51AQI
51AQI
23rd April 2025
35AQI
35AQI
24th April 2025
67AQI
67AQI
25th April 2025
63AQI
63AQI
26th April 2025
58AQI
58AQI
27th April 2025
44AQI
44AQI
28th April 2025
63AQI
63AQI
29th April 2025
71AQI
71AQI
30th April 2025
60AQI
60AQI
1st May 2025
63AQI
63AQI
2nd May 2025
52AQI
52AQI
3rd May 2025
51AQI
51AQI
4th May 2025
49AQI
49AQI
5th May 2025
54AQI
54AQI
6th May 2025
43AQI
43AQI
7th May 2025
56AQI
56AQI
8th May 2025
66AQI
66AQI
9th May 2025
51AQI
51AQI
10th May 2025
63AQI
63AQI
11th May 2025
73AQI
73AQI
12th May 2025
74AQI
74AQI
13th May 2025
75AQI
75AQI
14th May 2025
75AQI
75AQI
15th May 2025
64AQI
64AQI
16th May 2025
54AQI
54AQI
17th May 2025
51AQI
51AQI
18th May 2025
59AQI
59AQI
19th May 2025
62AQI
62AQI
20th May 2025
40AQI
40AQI
21st May 2025
52AQI
52AQI
22nd May 2025
48AQI
48AQI
23rd May 2025
64AQI
64AQI
24th May 2025
47AQI
47AQI
25th May 2025
51AQI
51AQI
26th May 2025
65AQI
65AQI
27th May 2025
86AQI
86AQI
28th May 2025
91AQI
91AQI
29th May 2025
84AQI
84AQI
30th May 2025
80AQI
80AQI
31st May 2025
87AQI
87AQI
1st June 2025
92AQI
92AQI
2nd June 2025
104AQI
104AQI
3rd June 2025
81AQI
81AQI
4th June 2025
62AQI
62AQI
5th June 2025
60AQI
60AQI
6th June 2025
60AQI
60AQI
7th June 2025
71AQI
71AQI
8th June 2025
60AQI
60AQI
9th June 2025
66AQI
66AQI
10th June 2025
57AQI
57AQI
11th June 2025
55AQI
55AQI
12th June 2025
63AQI
63AQI
13th June 2025
80AQI
80AQI
14th June 2025
60AQI
60AQI
15th June 2025
58AQI
58AQI
16th June 2025
66AQI
66AQI
17th June 2025
64AQI
64AQI
18th June 2025
68AQI
68AQI
19th June 2025
65AQI
65AQI
20th June 2025
46AQI
46AQI
21st June 2025
62AQI
62AQI
22nd June 2025
71AQI
71AQI
23rd June 2025
73AQI
73AQI
24th June 2025
64AQI
64AQI
25th June 2025
49AQI
49AQI
26th June 2025
60AQI
60AQI
27th June 2025
69AQI
69AQI
28th June 2025
66AQI
66AQI
29th June 2025
49AQI
49AQI
30th June 2025
45AQI
45AQI
1st July 2025
44AQI
44AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
54AQI
54AQI
4th July 2025
52AQI
52AQI
5th July 2025
51AQI
51AQI
6th July 2025
55AQI
55AQI
7th July 2025
68AQI
68AQI
8th July 2025
71AQI
71AQI
9th July 2025
58AQI
58AQI
10th July 2025
52AQI
52AQI
11th July 2025
50AQI
50AQI
12th July 2025
48AQI
48AQI
13th July 2025
64AQI
64AQI
14th July 2025
59AQI
59AQI
15th July 2025
44AQI
44AQI
16th July 2025
53AQI
53AQI
17th July 2025
39AQI
39AQI
18th July 2025
43AQI
43AQI
19th July 2025
36AQI
36AQI
20th July 2025
41AQI
41AQI
21st July 2025
41AQI
41AQI
22nd July 2025
41AQI
41AQI
23rd July 2025
48AQI
48AQI
24th July 2025
55AQI
55AQI
25th July 2025
61AQI
61AQI
26th July 2025
47AQI
47AQI
27th July 2025
44AQI
44AQI
28th July 2025
62AQI
62AQI
29th July 2025
69AQI
69AQI
30th July 2025
60AQI
60AQI
31st July 2025
60AQI
60AQI
1st August 2025
57AQI
57AQI
80AQI
62AQI
85AQI
68AQI
62AQI
65AQI
52AQI
57AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202568AQI
1
24
6
5
22
1
3
18
10
3
27
5
26
4
25
1
14
17
1
35
160
18
Highest AQI recorded in
March85AQI
Lowest AQI recorded in
July52AQI
202463AQI
10
15
6
9
13
6
1
6
22
2
1
2
23
5
9
21
1
5
25
21
9
1
9
22
21
9
16
14
1
9
20
1
5
26
122
219
23
2
Highest AQI recorded in
April77AQI
Lowest AQI recorded in
September43AQI
202370AQI
5
17
6
3
2
18
5
3
2
16
13
2
22
5
1
5
24
2
3
27
12
17
2
14
17
17
13
11
18
2
12
15
2
11
13
7
96
217
44
7
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September51AQI
202271AQI
1
21
7
2
3
11
5
2
4
19
8
5
18
7
6
23
2
13
17
5
20
2
1
18
9
2
14
12
5
5
17
7
1
5
22
4
81
190
47
5
Highest AQI recorded in
February86AQI
Lowest AQI recorded in
August38AQI
202168AQI
8
21
2
5
15
6
2
3
17
9
1
1
8
20
2
8
18
3
2
3
24
3
15
16
17
14
25
5
13
17
1
7
19
2
2
9
13
9
121
199
37
5
1
2
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September38AQI
202065AQI
3
9
1
3
17
1
4
12
2
3
23
4
18
12
1
18
13
19
11
10
19
2
7
15
8
7
14
9
1
92
145
28
1
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
September47AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
71AQILeast Polluted Year Recorded
2024(Avg.)
63AQIOsan's annual 2025 AQI (68) shows an average percentage change of 0.8% (worsened AQI) compared to previous years: 2020 (65), 2021 (68), 2022 (71), 2023 (70), 2024 (63).
