Ulsan, Ulsan, 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
Ulsan, Ulsan, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
25th Aug 2024
104AQILowest AQI recorded on
15th Aug 2024
24AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 62 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Ulsan, Ulsan, South Korea
AQI
Day
Night
.
5 AM4th Aug 2025
7 PM
4 AM5th Aug 2025
Day time
Avg. Highest Time
12PM4th Aug
61AQI
Avg. Lowest Time
9AM4th Aug
43AQI
Night time
Avg. Highest Time
8PM4th Aug
56AQI
Avg. Lowest Time
11PM4th Aug
52AQI
In the last 24 hours,
Ulsan's AQI reached its highest point of 61 at 12 PM during the Day, while the lowest point, 43, was recorded at 9 AM during the Day between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ulsan, Ulsan, South Korea
JulAug
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 Jul 2025605 AMAQI
6th Jul 2025606 AMAQI
6th Jul 2025607 AMAQI
6th Jul 2025608 AMAQI
6th Jul 2025599 AMAQI
6th Jul 20256010 AMAQI
6th Jul 20255711 AMAQI
6th Jul 20255512 PMAQI
6th Jul 2025561 PMAQI
6th Jul 2025542 PMAQI
6th Jul 2025543 PMAQI
6th Jul 2025554 PMAQI
6th Jul 2025615 PMAQI
6th Jul 2025596 PMAQI
6th Jul 2025577 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025589 PMAQI
6th Jul 20255910 PMAQI
6th Jul 20255911 PMAQI
7th Jul 20256012 AMAQI
7th Jul 2025601 AMAQI
7th Jul 2025612 AMAQI
7th Jul 2025613 AMAQI
7th Jul 2025614 AMAQI
28°C23/34°C
7th Jul 2025605 AMAQI
7th Jul 2025606 AMAQI
7th Jul 2025607 AMAQI
7th Jul 2025608 AMAQI
7th Jul 2025649 AMAQI
7th Jul 20256710 AMAQI
7th Jul 20256711 AMAQI
7th Jul 20256912 PMAQI
7th Jul 2025711 PMAQI
7th Jul 2025752 PMAQI
7th Jul 2025753 PMAQI
7th Jul 2025794 PMAQI
7th Jul 2025805 PMAQI
7th Jul 2025796 PMAQI
7th Jul 2025757 PMAQI
7th Jul 2025718 PMAQI
7th Jul 2025679 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256611 PMAQI
8th Jul 20256512 AMAQI
8th Jul 2025651 AMAQI
8th Jul 2025632 AMAQI
8th Jul 2025603 AMAQI
8th Jul 2025604 AMAQI
28°C24/33°C
8th Jul 2025625 AMAQI
8th Jul 2025626 AMAQI
8th Jul 2025627 AMAQI
8th Jul 2025628 AMAQI
8th Jul 2025729 AMAQI
8th Jul 20257310 AMAQI
8th Jul 20257111 AMAQI
8th Jul 20257112 PMAQI
8th Jul 2025731 PMAQI
8th Jul 2025702 PMAQI
8th Jul 2025703 PMAQI
8th Jul 2025704 PMAQI
8th Jul 2025705 PMAQI
8th Jul 2025706 PMAQI
8th Jul 2025707 PMAQI
8th Jul 2025698 PMAQI
8th Jul 2025659 PMAQI
8th Jul 20256310 PMAQI
8th Jul 20256311 PMAQI
9th Jul 20256212 AMAQI
9th Jul 2025621 AMAQI
9th Jul 2025622 AMAQI
9th Jul 2025623 AMAQI
9th Jul 2025634 AMAQI
26°C22/30°C
9th Jul 2025645 AMAQI
9th Jul 2025646 AMAQI
9th Jul 2025647 AMAQI
9th Jul 2025648 AMAQI
9th Jul 2025599 AMAQI
9th Jul 20255510 AMAQI
9th Jul 20255011 AMAQI
9th Jul 20255012 PMAQI
9th Jul 2025531 PMAQI
9th Jul 2025502 PMAQI
9th Jul 2025483 PMAQI
9th Jul 2025504 PMAQI
9th Jul 2025495 PMAQI
9th Jul 2025476 PMAQI
9th Jul 2025487 PMAQI
9th Jul 2025488 PMAQI
9th Jul 2025569 PMAQI
9th Jul 20255610 PMAQI
9th Jul 20255711 PMAQI
10th Jul 20255812 AMAQI
10th Jul 2025571 AMAQI
10th Jul 2025572 AMAQI
10th Jul 2025633 AMAQI
10th Jul 2025624 AMAQI
25°C21/30°C
10th Jul 2025615 AMAQI
10th Jul 2025616 AMAQI
10th Jul 2025617 AMAQI
10th Jul 2025618 AMAQI
10th Jul 2025479 AMAQI
10th Jul 20254210 AMAQI
10th Jul 20254211 AMAQI
10th Jul 20254212 PMAQI
10th Jul 2025461 PMAQI
10th Jul 2025472 PMAQI
10th Jul 2025463 PMAQI
10th Jul 2025474 PMAQI
10th Jul 2025485 PMAQI
10th Jul 2025476 PMAQI
10th Jul 2025347 PMAQI
10th Jul 2025518 PMAQI
10th Jul 2025609 PMAQI
10th Jul 20256010 PMAQI
10th Jul 20255911 PMAQI
11th Jul 20255812 AMAQI
11th Jul 2025611 AMAQI
11th Jul 2025592 AMAQI
11th Jul 2025583 AMAQI
11th Jul 2025594 AMAQI
24°C21/29°C
11th Jul 2025605 AMAQI
11th Jul 2025596 AMAQI
11th Jul 2025577 AMAQI
11th Jul 2025578 AMAQI
11th Jul 2025479 AMAQI
11th Jul 20254410 AMAQI
11th Jul 20254511 AMAQI
11th Jul 20254512 PMAQI
11th Jul 2025521 PMAQI
11th Jul 2025522 PMAQI
11th Jul 2025523 PMAQI
11th Jul 2025534 PMAQI
11th Jul 2025525 PMAQI
11th Jul 2025536 PMAQI
11th Jul 2025537 PMAQI
11th Jul 2025538 PMAQI
11th Jul 2025559 PMAQI
11th Jul 20255510 PMAQI
11th Jul 20255511 PMAQI
12th Jul 20255512 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025582 AMAQI
12th Jul 2025583 AMAQI
12th Jul 2025584 AMAQI
24°C22/28°C
12th Jul 2025575 AMAQI
12th Jul 2025576 AMAQI
12th Jul 2025577 AMAQI
12th Jul 2025578 AMAQI
12th Jul 2025539 AMAQI
12th Jul 20255110 AMAQI
12th Jul 20255211 AMAQI
12th Jul 20255312 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025522 PMAQI
12th Jul 2025523 PMAQI
12th Jul 2025524 PMAQI
12th Jul 2025535 PMAQI
12th Jul 2025526 PMAQI
12th Jul 2025527 PMAQI
12th Jul 2025548 PMAQI
12th Jul 2025569 PMAQI
12th Jul 20255510 PMAQI
12th Jul 20255511 PMAQI
13th Jul 20255512 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025572 AMAQI
13th Jul 2025573 AMAQI
13th Jul 2025574 AMAQI
24°C21/28°C
13th Jul 2025575 AMAQI
13th Jul 2025576 AMAQI
13th Jul 2025577 AMAQI
13th Jul 2025568 AMAQI
13th Jul 2025549 AMAQI
13th Jul 20255110 AMAQI
13th Jul 20255211 AMAQI
13th Jul 20255412 PMAQI
13th Jul 2025561 PMAQI
13th Jul 2025562 PMAQI
13th Jul 2025583 PMAQI
13th Jul 2025574 PMAQI
13th Jul 2025545 PMAQI
13th Jul 2025536 PMAQI
13th Jul 2025537 PMAQI
13th Jul 2025538 PMAQI
13th Jul 2025559 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255311 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025562 AMAQI
14th Jul 2025573 AMAQI
14th Jul 2025564 AMAQI
25°C21/29°C
14th Jul 2025575 AMAQI
14th Jul 2025566 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025299 AMAQI
14th Jul 20252310 AMAQI
14th Jul 20252311 AMAQI
14th Jul 20252812 PMAQI
14th Jul 2025341 PMAQI
14th Jul 2025352 PMAQI
14th Jul 2025353 PMAQI
14th Jul 2025374 PMAQI
14th Jul 2025465 PMAQI
14th Jul 2025486 PMAQI
14th Jul 2025487 PMAQI
14th Jul 2025498 PMAQI
14th Jul 2025539 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255111 PMAQI
15th Jul 20255012 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025553 AMAQI
15th Jul 2025554 AMAQI
23°C20/26°C
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025479 AMAQI
15th Jul 20254910 AMAQI
15th Jul 20255111 AMAQI
15th Jul 20255212 PMAQI
15th Jul 2025501 PMAQI
15th Jul 2025522 PMAQI
15th Jul 2025533 PMAQI
15th Jul 2025544 PMAQI
15th Jul 2025535 PMAQI
15th Jul 2025516 PMAQI
15th Jul 2025527 PMAQI
15th Jul 2025508 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255311 PMAQI
16th Jul 20255312 AMAQI
16th Jul 2025541 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025543 AMAQI
16th Jul 2025544 AMAQI
23°C19/27°C
16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025599 AMAQI
16th Jul 20256210 AMAQI
16th Jul 20256211 AMAQI
16th Jul 20256112 PMAQI
16th Jul 2025581 PMAQI
16th Jul 2025582 PMAQI
16th Jul 2025583 PMAQI
16th Jul 2025564 PMAQI
16th Jul 2025585 PMAQI
16th Jul 2025576 PMAQI
16th Jul 2025587 PMAQI
16th Jul 2025568 PMAQI
16th Jul 2025569 PMAQI
16th Jul 20255610 PMAQI
16th Jul 20255611 PMAQI
17th Jul 20255612 AMAQI
17th Jul 2025541 AMAQI
17th Jul 2025542 AMAQI
17th Jul 2025543 AMAQI
17th Jul 2025544 AMAQI
22°C21/26°C
17th Jul 2025555 AMAQI
17th Jul 2025556 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025558 AMAQI
17th Jul 2025619 AMAQI
17th Jul 20256110 AMAQI
17th Jul 20255911 AMAQI
17th Jul 20255712 PMAQI
17th Jul 2025571 PMAQI
17th Jul 2025582 PMAQI
17th Jul 2025583 PMAQI
17th Jul 2025574 PMAQI
17th Jul 2025575 PMAQI
17th Jul 2025576 PMAQI
17th Jul 2025467 PMAQI
17th Jul 2025408 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254810 PMAQI
17th Jul 20254811 PMAQI
18th Jul 20254912 AMAQI
18th Jul 2025521 AMAQI
18th Jul 2025542 AMAQI
18th Jul 2025553 AMAQI
18th Jul 2025554 AMAQI
24°C22/28°C
18th Jul 2025555 AMAQI
18th Jul 2025556 AMAQI
18th Jul 2025557 AMAQI
18th Jul 2025568 AMAQI
18th Jul 2025469 AMAQI
18th Jul 20253910 AMAQI
18th Jul 20254111 AMAQI
18th Jul 20254412 PMAQI
18th Jul 2025441 PMAQI
18th Jul 2025432 PMAQI
18th Jul 2025343 PMAQI
18th Jul 2025384 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025386 PMAQI
18th Jul 2025367 PMAQI
18th Jul 2025388 PMAQI
18th Jul 2025469 PMAQI
18th Jul 20254510 PMAQI
18th Jul 20254511 PMAQI
19th Jul 20254512 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025542 AMAQI
19th Jul 2025543 AMAQI
19th Jul 2025534 AMAQI
25°C22/28°C
19th Jul 2025535 AMAQI
19th Jul 2025526 AMAQI
19th Jul 2025537 AMAQI
19th Jul 2025538 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20252110 AMAQI
19th Jul 20251811 AMAQI
19th Jul 20251912 PMAQI
19th Jul 2025311 PMAQI
19th Jul 2025402 PMAQI
19th Jul 2025343 PMAQI
19th Jul 2025274 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025296 PMAQI
19th Jul 2025277 PMAQI
19th Jul 2025348 PMAQI
19th Jul 2025429 PMAQI
19th Jul 20254310 PMAQI
19th Jul 20254311 PMAQI
20th Jul 20254512 AMAQI
20th Jul 2025521 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
20th Jul 2025514 AMAQI
24°C22/26°C
20th Jul 2025485 AMAQI
20th Jul 2025486 AMAQI
20th Jul 2025487 AMAQI
20th Jul 2025488 AMAQI
20th Jul 2025439 AMAQI
20th Jul 20254210 AMAQI
20th Jul 20254811 AMAQI
20th Jul 20255312 PMAQI
20th Jul 2025521 PMAQI
20th Jul 2025522 PMAQI
20th Jul 2025503 PMAQI
20th Jul 2025504 PMAQI
20th Jul 2025505 PMAQI
20th Jul 2025506 PMAQI
20th Jul 2025487 PMAQI
20th Jul 2025498 PMAQI
20th Jul 2025499 PMAQI
20th Jul 20255110 PMAQI
20th Jul 20255111 PMAQI
21st Jul 20255012 AMAQI
21st Jul 2025501 AMAQI
21st Jul 2025492 AMAQI
21st Jul 2025503 AMAQI
21st Jul 2025494 AMAQI
26°C22/31°C
21st Jul 2025505 AMAQI
21st Jul 2025506 AMAQI
21st Jul 2025507 AMAQI
21st Jul 2025508 AMAQI
21st Jul 2025519 AMAQI
21st Jul 20254310 AMAQI
21st Jul 20253411 AMAQI
21st Jul 20253412 PMAQI
21st Jul 2025351 PMAQI
21st Jul 2025372 PMAQI
21st Jul 2025363 PMAQI
21st Jul 2025354 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025396 PMAQI
21st Jul 2025367 PMAQI
21st Jul 2025398 PMAQI
21st Jul 2025449 PMAQI
21st Jul 20254510 PMAQI
21st Jul 20254611 PMAQI
22nd Jul 20254712 AMAQI
22nd Jul 2025491 AMAQI
22nd Jul 2025492 AMAQI
22nd Jul 2025493 AMAQI
22nd Jul 2025494 AMAQI
27°C24/30°C
22nd Jul 2025485 AMAQI
22nd Jul 2025486 AMAQI
22nd Jul 2025487 AMAQI
22nd Jul 2025488 AMAQI
22nd Jul 2025439 AMAQI
22nd Jul 20254810 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20255112 PMAQI
22nd Jul 2025481 PMAQI
22nd Jul 2025492 PMAQI
22nd Jul 2025573 PMAQI
22nd Jul 2025604 PMAQI
22nd Jul 2025625 PMAQI
22nd Jul 2025646 PMAQI
22nd Jul 2025657 PMAQI
22nd Jul 2025628 PMAQI
22nd Jul 2025589 PMAQI
22nd Jul 20255810 PMAQI
22nd Jul 20255811 PMAQI
23rd Jul 20256212 AMAQI
23rd Jul 2025611 AMAQI
23rd Jul 2025612 AMAQI
23rd Jul 2025493 AMAQI
23rd Jul 2025484 AMAQI
28°C23/32°C
23rd Jul 2025505 AMAQI
23rd Jul 2025506 AMAQI
23rd Jul 2025497 AMAQI
23rd Jul 2025498 AMAQI
23rd Jul 2025739 AMAQI
23rd Jul 20258310 AMAQI
23rd Jul 20258411 AMAQI
23rd Jul 20258612 PMAQI
23rd Jul 2025901 PMAQI
23rd Jul 2025992 PMAQI
23rd Jul 2025963 PMAQI
23rd Jul 2025924 PMAQI
23rd Jul 2025825 PMAQI
23rd Jul 2025776 PMAQI
23rd Jul 2025757 PMAQI
23rd Jul 2025698 PMAQI
23rd Jul 2025639 PMAQI
23rd Jul 20256310 PMAQI
23rd Jul 20256411 PMAQI
24th Jul 20256212 AMAQI
24th Jul 2025541 AMAQI
24th Jul 2025542 AMAQI
24th Jul 2025543 AMAQI
24th Jul 2025574 AMAQI
28°C24/32°C
24th Jul 2025615 AMAQI
24th Jul 2025616 AMAQI
24th Jul 2025617 AMAQI
24th Jul 2025618 AMAQI
24th Jul 2025729 AMAQI
24th Jul 20257810 AMAQI
24th Jul 20257511 AMAQI
24th Jul 20257312 PMAQI
24th Jul 2025661 PMAQI
24th Jul 2025572 PMAQI
24th Jul 2025533 PMAQI
24th Jul 2025504 PMAQI
24th Jul 2025515 PMAQI
24th Jul 2025506 PMAQI
24th Jul 2025557 PMAQI
24th Jul 2025568 PMAQI
24th Jul 2025589 PMAQI
24th Jul 20255710 PMAQI
24th Jul 20255811 PMAQI
25th Jul 20255812 AMAQI
25th Jul 2025571 AMAQI
25th Jul 2025572 AMAQI
25th Jul 2025573 AMAQI
25th Jul 2025584 AMAQI
27°C23/32°C
25th Jul 2025605 AMAQI
25th Jul 2025606 AMAQI
25th Jul 2025607 AMAQI
25th Jul 2025608 AMAQI
25th Jul 2025599 AMAQI
25th Jul 20255710 AMAQI
25th Jul 20254411 AMAQI
25th Jul 20254112 PMAQI
25th Jul 2025401 PMAQI
25th Jul 2025372 PMAQI
25th Jul 2025343 PMAQI
25th Jul 2025324 PMAQI
25th Jul 2025345 PMAQI
25th Jul 2025336 PMAQI
25th Jul 2025307 PMAQI
25th Jul 2025398 PMAQI
25th Jul 2025519 PMAQI
25th Jul 20255210 PMAQI
25th Jul 20255211 PMAQI
26th Jul 20255312 AMAQI
26th Jul 2025581 AMAQI
26th Jul 2025582 AMAQI
26th Jul 2025583 AMAQI
26th Jul 2025574 AMAQI
27°C24/31°C
26th Jul 2025575 AMAQI
26th Jul 2025566 AMAQI
26th Jul 2025577 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025549 AMAQI
26th Jul 20255810 AMAQI
26th Jul 20255711 AMAQI
26th Jul 20253812 PMAQI
26th Jul 2025311 PMAQI
26th Jul 2025282 PMAQI
26th Jul 2025273 PMAQI
26th Jul 2025304 PMAQI
26th Jul 2025325 PMAQI
26th Jul 2025326 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025378 PMAQI
26th Jul 2025499 PMAQI
26th Jul 20255010 PMAQI
26th Jul 20255311 PMAQI
27th Jul 20255312 AMAQI
27th Jul 2025561 AMAQI
27th Jul 2025562 AMAQI
27th Jul 2025563 AMAQI
27th Jul 2025564 AMAQI
27°C24/31°C
27th Jul 2025555 AMAQI
27th Jul 2025556 AMAQI
27th Jul 2025557 AMAQI
27th Jul 2025558 AMAQI
27th Jul 2025519 AMAQI
27th Jul 20254610 AMAQI
27th Jul 20253411 AMAQI
27th Jul 20252812 PMAQI
27th Jul 2025291 PMAQI
27th Jul 2025282 PMAQI
27th Jul 2025303 PMAQI
27th Jul 2025314 PMAQI
27th Jul 2025305 PMAQI
27th Jul 2025326 PMAQI
27th Jul 2025307 PMAQI
27th Jul 2025378 PMAQI
27th Jul 2025469 PMAQI
27th Jul 20254610 PMAQI
27th Jul 20254711 PMAQI
28th Jul 20254612 AMAQI
28th Jul 2025541 AMAQI
28th Jul 2025552 AMAQI
28th Jul 2025553 AMAQI
28th Jul 2025544 AMAQI
27°C24/32°C
28th Jul 2025535 AMAQI
28th Jul 2025526 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025528 AMAQI
28th Jul 2025389 AMAQI
28th Jul 20253810 AMAQI
28th Jul 20253911 AMAQI
28th Jul 20254212 PMAQI
28th Jul 2025501 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025533 PMAQI
28th Jul 2025534 PMAQI
28th Jul 2025525 PMAQI
28th Jul 2025496 PMAQI
28th Jul 2025467 PMAQI
28th Jul 2025448 PMAQI
28th Jul 2025499 PMAQI
28th Jul 20254610 PMAQI
28th Jul 20254511 PMAQI
29th Jul 20254512 AMAQI
29th Jul 2025511 AMAQI
29th Jul 2025532 AMAQI
29th Jul 2025523 AMAQI
29th Jul 2025524 AMAQI
27°C23/33°C
29th Jul 2025525 AMAQI
29th Jul 2025526 AMAQI
29th Jul 2025527 AMAQI
29th Jul 2025528 AMAQI
29th Jul 2025459 AMAQI
29th Jul 20254910 AMAQI
29th Jul 20255611 AMAQI
29th Jul 20255512 PMAQI
29th Jul 2025531 PMAQI
29th Jul 2025532 PMAQI
29th Jul 2025503 PMAQI
29th Jul 2025404 PMAQI
29th Jul 2025425 PMAQI
29th Jul 2025446 PMAQI
29th Jul 2025457 PMAQI
29th Jul 2025468 PMAQI
29th Jul 2025459 PMAQI
29th Jul 20254410 PMAQI
29th Jul 20254411 PMAQI
30th Jul 20254612 AMAQI
30th Jul 2025511 AMAQI
30th Jul 2025522 AMAQI
30th Jul 2025513 AMAQI
30th Jul 2025524 AMAQI
27°C23/32°C
30th Jul 2025525 AMAQI
30th Jul 2025526 AMAQI
30th Jul 2025527 AMAQI
30th Jul 2025528 AMAQI
30th Jul 2025539 AMAQI
30th Jul 20255410 AMAQI
30th Jul 20255411 AMAQI
30th Jul 20255512 PMAQI
30th Jul 2025541 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025493 PMAQI
30th Jul 2025444 PMAQI
30th Jul 2025475 PMAQI
30th Jul 2025506 PMAQI
30th Jul 2025507 PMAQI
30th Jul 2025508 PMAQI
30th Jul 2025529 PMAQI
30th Jul 20255210 PMAQI
30th Jul 20255311 PMAQI
31st Jul 20255312 AMAQI
31st Jul 2025511 AMAQI
31st Jul 2025522 AMAQI
31st Jul 2025513 AMAQI
31st Jul 2025524 AMAQI
27°C23/32°C
31st Jul 2025515 AMAQI
31st Jul 2025516 AMAQI
31st Jul 2025517 AMAQI
31st Jul 2025518 AMAQI
31st Jul 2025519 AMAQI
31st Jul 20255110 AMAQI
31st Jul 20255811 AMAQI
31st Jul 20255712 PMAQI
31st Jul 2025551 PMAQI
31st Jul 2025522 PMAQI
31st Jul 2025473 PMAQI
31st Jul 2025484 PMAQI
31st Jul 2025495 PMAQI
31st Jul 2025486 PMAQI
31st Jul 2025537 PMAQI
31st Jul 2025518 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255210 PMAQI
31st Jul 20255011 PMAQI
1st Aug 20254812 AMAQI
1st Aug 2025461 AMAQI
1st Aug 2025512 AMAQI
1st Aug 2025473 AMAQI
1st Aug 2025514 AMAQI
27°C23/32°C
1st Aug 2025525 AMAQI
1st Aug 2025536 AMAQI
1st Aug 2025527 AMAQI
1st Aug 2025518 AMAQI
1st Aug 2025559 AMAQI
1st Aug 20255810 AMAQI
1st Aug 20255611 AMAQI
1st Aug 20255612 PMAQI
1st Aug 2025531 PMAQI
1st Aug 2025562 PMAQI
1st Aug 2025553 PMAQI
1st Aug 2025534 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025556 PMAQI
1st Aug 2025537 PMAQI
1st Aug 2025538 PMAQI
1st Aug 2025549 PMAQI
1st Aug 20255210 PMAQI
1st Aug 20255211 PMAQI
2nd Aug 20255112 AMAQI
2nd Aug 2025491 AMAQI
2nd Aug 2025502 AMAQI
2nd Aug 2025503 AMAQI
2nd Aug 2025514 AMAQI
27°C23/33°C
2nd Aug 2025525 AMAQI
2nd Aug 2025516 AMAQI
2nd Aug 2025517 AMAQI
2nd Aug 2025518 AMAQI
2nd Aug 2025659 AMAQI
2nd Aug 20256610 AMAQI
2nd Aug 20257011 AMAQI
2nd Aug 20257312 PMAQI
2nd Aug 2025731 PMAQI
2nd Aug 2025682 PMAQI
2nd Aug 2025703 PMAQI
2nd Aug 2025684 PMAQI
2nd Aug 2025665 PMAQI
2nd Aug 2025716 PMAQI
2nd Aug 2025667 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20255910 PMAQI
2nd Aug 20255811 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025521 AMAQI
3rd Aug 2025512 AMAQI
3rd Aug 2025513 AMAQI
3rd Aug 2025544 AMAQI
28°C23/34°C
3rd Aug 2025565 AMAQI
3rd Aug 2025566 AMAQI
3rd Aug 2025557 AMAQI
3rd Aug 2025558 AMAQI
3rd Aug 2025699 AMAQI
3rd Aug 20257410 AMAQI
3rd Aug 20258511 AMAQI
3rd Aug 20257712 PMAQI
3rd Aug 2025741 PMAQI
3rd Aug 2025722 PMAQI
3rd Aug 2025703 PMAQI
3rd Aug 2025644 PMAQI
3rd Aug 2025665 PMAQI
3rd Aug 2025626 PMAQI
3rd Aug 2025637 PMAQI
3rd Aug 2025598 PMAQI
3rd Aug 2025599 PMAQI
3rd Aug 20256010 PMAQI
3rd Aug 20255611 PMAQI
4th Aug 20255512 AMAQI
4th Aug 2025541 AMAQI
4th Aug 2025542 AMAQI
4th Aug 2025553 AMAQI
4th Aug 2025574 AMAQI
27°C25/31°C
4th Aug 2025585 AMAQI
4th Aug 2025586 AMAQI
4th Aug 2025597 AMAQI
4th Aug 2025598 AMAQI
4th Aug 2025439 AMAQI
4th Aug 20255410 AMAQI
4th Aug 20255911 AMAQI
4th Aug 20256112 PMAQI
4th Aug 2025591 PMAQI
4th Aug 2025612 PMAQI
4th Aug 2025583 PMAQI
4th Aug 2025594 PMAQI
4th Aug 2025595 PMAQI
4th Aug 2025616 PMAQI
4th Aug 2025567 PMAQI
4th Aug 2025568 PMAQI
4th Aug 2025559 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20255211 PMAQI
5th Aug 20255312 AMAQI
5th Aug 2025541 AMAQI
5th Aug 2025552 AMAQI
5th Aug 2025553 AMAQI
5th Aug 2025564 AMAQI
29°C25/33°C
5th Aug 2025565 AMAQI
5 AM5th Aug 2025556 AMAQI
5th Aug 2025567 AMAQI
5th Aug 2025568 AMAQI
5th Aug 2025499 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 - 4 AM
55AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM
51AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 55), while the lowest AQI was between 8 PM to 8 PM (Avg. 51).
2025 Days Vs Air Quality
Ulsan, Ulsan, South Korea
2025
23%
49
75%
161
2%
5
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
49 DaysModerate
161 DaysPoor
5 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 23%
Health Risk Level:
Very high
In 2025, 23% of 217 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Ulsan, Ulsan, 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
55AQI
55AQI
2nd January 2025
64AQI
64AQI
3rd January 2025
50AQI
50AQI
4th January 2025
50AQI
50AQI
5th January 2025
59AQI
59AQI
6th January 2025
91AQI
91AQI
7th January 2025
49AQI
49AQI
8th January 2025
60AQI
60AQI
9th January 2025
41AQI
41AQI
10th January 2025
48AQI
48AQI
11th January 2025
48AQI
48AQI
12th January 2025
61AQI
61AQI
13th January 2025
64AQI
64AQI
14th January 2025
82AQI
82AQI
15th January 2025
51AQI
51AQI
16th January 2025
58AQI
58AQI
17th January 2025
74AQI
74AQI
18th January 2025
77AQI
77AQI
19th January 2025
75AQI
75AQI
20th January 2025
101AQI
101AQI
21st January 2025
125AQI
125AQI
22nd January 2025
118AQI
118AQI
23rd January 2025
107AQI
107AQI
24th January 2025
86AQI
86AQI
25th January 2025
63AQI
63AQI
26th January 2025
54AQI
54AQI
27th January 2025
55AQI
55AQI
28th January 2025
43AQI
43AQI
29th January 2025
44AQI
44AQI
30th January 2025
56AQI
56AQI
31st January 2025
61AQI
61AQI
1st February 2025
62AQI
62AQI
2nd February 2025
58AQI
58AQI
3rd February 2025
56AQI
56AQI
4th February 2025
45AQI
45AQI
5th February 2025
44AQI
44AQI
6th February 2025
41AQI
41AQI
7th February 2025
52AQI
52AQI
8th February 2025
39AQI
39AQI
9th February 2025
44AQI
44AQI
10th February 2025
47AQI
47AQI
11th February 2025
64AQI
64AQI
12th February 2025
60AQI
60AQI
13th February 2025
47AQI
47AQI
14th February 2025
69AQI
69AQI
15th February 2025
53AQI
53AQI
16th February 2025
73AQI
73AQI
17th February 2025
46AQI
46AQI
18th February 2025
48AQI
48AQI
19th February 2025
43AQI
43AQI
20th February 2025
46AQI
46AQI
21st February 2025
46AQI
46AQI
22nd February 2025
53AQI
53AQI
23rd February 2025
49AQI
49AQI
24th February 2025
52AQI
52AQI
25th February 2025
50AQI
50AQI
26th February 2025
84AQI
84AQI
27th February 2025
77AQI
77AQI
28th February 2025
73AQI
73AQI
1st March 2025
77AQI
77AQI
2nd March 2025
84AQI
84AQI
3rd March 2025
51AQI
51AQI
4th March 2025
49AQI
49AQI
5th March 2025
39AQI
39AQI
6th March 2025
41AQI
41AQI
7th March 2025
51AQI
51AQI
8th March 2025
53AQI
53AQI
9th March 2025
70AQI
70AQI
10th March 2025
63AQI
63AQI
11th March 2025
83AQI
83AQI
12th March 2025
81AQI
81AQI
13th March 2025
64AQI
64AQI
14th March 2025
58AQI
58AQI
15th March 2025
46AQI
46AQI
16th March 2025
50AQI
50AQI
17th March 2025
58AQI
58AQI
18th March 2025
60AQI
60AQI
19th March 2025
73AQI
73AQI
20th March 2025
72AQI
72AQI
21st March 2025
83AQI
83AQI
22nd March 2025
74AQI
74AQI
23rd March 2025
99AQI
99AQI
24th March 2025
90AQI
90AQI
25th March 2025
121AQI
121AQI
26th March 2025
96AQI
96AQI
27th March 2025
84AQI
84AQI
28th March 2025
81AQI
81AQI
29th March 2025
59AQI
59AQI
30th March 2025
52AQI
52AQI
31st March 2025
67AQI
67AQI
1st April 2025
65AQI
65AQI
2nd April 2025
53AQI
53AQI
3rd April 2025
55AQI
55AQI
4th April 2025
69AQI
69AQI
5th April 2025
61AQI
61AQI
6th April 2025
64AQI
64AQI
7th April 2025
64AQI
64AQI
8th April 2025
74AQI
74AQI
9th April 2025
79AQI
79AQI
10th April 2025
82AQI
82AQI
11th April 2025
81AQI
81AQI
12th April 2025
79AQI
79AQI
13th April 2025
66AQI
66AQI
14th April 2025
63AQI
63AQI
15th April 2025
51AQI
51AQI
16th April 2025
70AQI
70AQI
17th April 2025
64AQI
64AQI
18th April 2025
80AQI
80AQI
19th April 2025
59AQI
59AQI
20th April 2025
60AQI
60AQI
21st April 2025
56AQI
56AQI
22nd April 2025
62AQI
62AQI
23rd April 2025
46AQI
46AQI
24th April 2025
70AQI
70AQI
25th April 2025
69AQI
69AQI
26th April 2025
61AQI
61AQI
27th April 2025
61AQI
61AQI
28th April 2025
64AQI
64AQI
29th April 2025
62AQI
62AQI
30th April 2025
70AQI
70AQI
1st May 2025
57AQI
57AQI
2nd May 2025
52AQI
52AQI
3rd May 2025
56AQI
56AQI
4th May 2025
49AQI
49AQI
5th May 2025
50AQI
50AQI
6th May 2025
53AQI
53AQI
7th May 2025
54AQI
54AQI
8th May 2025
58AQI
58AQI
9th May 2025
50AQI
50AQI
10th May 2025
39AQI
39AQI
11th May 2025
56AQI
56AQI
12th May 2025
59AQI
59AQI
13th May 2025
74AQI
74AQI
14th May 2025
74AQI
74AQI
15th May 2025
67AQI
67AQI
16th May 2025
67AQI
67AQI
17th May 2025
59AQI
59AQI
18th May 2025
60AQI
60AQI
19th May 2025
60AQI
60AQI
20th May 2025
54AQI
54AQI
21st May 2025
46AQI
46AQI
22nd May 2025
55AQI
55AQI
23rd May 2025
57AQI
57AQI
24th May 2025
40AQI
40AQI
25th May 2025
46AQI
46AQI
26th May 2025
56AQI
56AQI
27th May 2025
60AQI
60AQI
28th May 2025
64AQI
64AQI
29th May 2025
56AQI
56AQI
30th May 2025
52AQI
52AQI
31st May 2025
52AQI
52AQI
1st June 2025
70AQI
70AQI
2nd June 2025
84AQI
84AQI
3rd June 2025
74AQI
74AQI
4th June 2025
54AQI
54AQI
5th June 2025
55AQI
55AQI
6th June 2025
64AQI
64AQI
7th June 2025
61AQI
61AQI
8th June 2025
71AQI
71AQI
9th June 2025
62AQI
62AQI
10th June 2025
72AQI
72AQI
11th June 2025
56AQI
56AQI
12th June 2025
70AQI
70AQI
13th June 2025
65AQI
65AQI
14th June 2025
52AQI
52AQI
15th June 2025
60AQI
60AQI
16th June 2025
52AQI
52AQI
17th June 2025
57AQI
57AQI
18th June 2025
66AQI
66AQI
19th June 2025
66AQI
66AQI
20th June 2025
47AQI
47AQI
21st June 2025
42AQI
42AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
51AQI
51AQI
24th June 2025
46AQI
46AQI
25th June 2025
53AQI
53AQI
26th June 2025
60AQI
60AQI
27th June 2025
71AQI
71AQI
28th June 2025
76AQI
76AQI
29th June 2025
65AQI
65AQI
30th June 2025
58AQI
58AQI
1st July 2025
55AQI
55AQI
2nd July 2025
58AQI
58AQI
3rd July 2025
67AQI
67AQI
4th July 2025
64AQI
64AQI
5th July 2025
62AQI
62AQI
6th July 2025
59AQI
59AQI
7th July 2025
67AQI
67AQI
8th July 2025
66AQI
66AQI
9th July 2025
56AQI
56AQI
10th July 2025
53AQI
53AQI
11th July 2025
54AQI
54AQI
12th July 2025
55AQI
55AQI
13th July 2025
55AQI
55AQI
14th July 2025
47AQI
47AQI
15th July 2025
52AQI
52AQI
16th July 2025
56AQI
56AQI
17th July 2025
54AQI
54AQI
18th July 2025
46AQI
46AQI
19th July 2025
40AQI
40AQI
20th July 2025
49AQI
49AQI
21st July 2025
44AQI
44AQI
22nd July 2025
53AQI
53AQI
23rd July 2025
68AQI
68AQI
24th July 2025
59AQI
59AQI
25th July 2025
49AQI
49AQI
26th July 2025
47AQI
47AQI
27th July 2025
44AQI
44AQI
28th July 2025
49AQI
49AQI
29th July 2025
49AQI
49AQI
30th July 2025
51AQI
51AQI
31st July 2025
52AQI
52AQI
1st August 2025
53AQI
53AQI
2nd August 2025
60AQI
60AQI
3rd August 2025
62AQI
62AQI
67AQI
54AQI
69AQI
65AQI
56AQI
60AQI
54AQI
58AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202561AQI
8
19
4
14
14
5
25
1
1
29
7
24
4
26
10
21
3
49
161
5
Highest AQI recorded in
March69AQI
Lowest AQI recorded in
July54AQI
202454AQI
14
17
19
8
2
11
19
1
6
20
3
1
10
21
7
20
3
24
7
20
10
1
23
7
24
7
19
11
16
15
193
162
10
1
Highest AQI recorded in
April75AQI
Lowest AQI recorded in
October41AQI
202362AQI
9
18
4
5
21
2
2
24
5
10
15
4
1
7
23
1
8
22
11
20
17
14
23
7
14
17
13
16
13
15
3
132
212
19
1
Highest AQI recorded in
March78AQI
Lowest AQI recorded in
September44AQI
202259AQI
14
13
4
6
15
3
9
17
5
8
22
4
25
2
18
12
15
9
3
22
6
1
20
11
6
23
1
8
22
1
133
175
17
Highest AQI recorded in
March68AQI
Lowest AQI recorded in
August36AQI
202156AQI
14
17
11
14
3
8
21
1
1
12
17
1
10
20
1
8
22
25
6
19
12
27
3
19
12
12
16
2
12
18
1
177
178
9
1
Highest AQI recorded in
March72AQI
Lowest AQI recorded in
September38AQI
202057AQI
6
7
6
14
1
4
15
8
22
21
10
15
14
2
18
10
2
15
15
1
12
17
1
11
18
2
116
142
9
Highest AQI recorded in
May69AQI
Lowest AQI recorded in
July44AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
62AQILeast Polluted Year Recorded
2024(Avg.)
54AQIUlsan's annual 2025 AQI (61) shows an average percentage change of 6.4% (worsened AQI) compared to previous years: 2020 (57), 2021 (56), 2022 (59), 2023 (62), 2024 (54).
