Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Seongseong Dong, Chonan, Chungnam, 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

Seongseong Dong, Chonan, Chungnam, South Korea

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
12th Aug 2021
98AQI
Lowest AQI recorded on
24th Aug 2023
28AQI

Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 52 of Moderate air quality, showing improvement over 2024, 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 4th Aug - 5th Aug 2025

Seongseong Dong, Chonan, Chungnam, South Korea

AQI
Day
Night
.

5 AM4th Aug 2025

7 PM

4 AM5th Aug 2025

Day time
Avg. Highest Time
8AM4th Aug

59AQI

Avg. Lowest Time
3PM4th Aug

35AQI

Night time
Avg. Highest Time
9PM4th Aug

56AQI

Avg. Lowest Time
1AM5th Aug

54AQI

In the last 24 hours,

Seongseong Dong's AQI reached its highest point of 59 at 8 AM during the Day, while the lowest point, 35, was recorded at 3 PM during the Day between 4th Aug and 5th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Seongseong Dong, Chonan, Chungnam, 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 2025505 AMAQI
6th Jul 2025496 AMAQI
6th Jul 2025507 AMAQI
6th Jul 2025508 AMAQI
6th Jul 2025429 AMAQI
6th Jul 20253710 AMAQI
6th Jul 20253611 AMAQI
6th Jul 20254012 PMAQI
6th Jul 2025431 PMAQI
6th Jul 2025462 PMAQI
6th Jul 2025463 PMAQI
6th Jul 2025484 PMAQI
6th Jul 2025445 PMAQI
6th Jul 2025486 PMAQI
6th Jul 2025517 PMAQI
6th Jul 2025488 PMAQI
6th Jul 2025529 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255211 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025511 AMAQI
7th Jul 2025502 AMAQI
7th Jul 2025503 AMAQI
7th Jul 2025524 AMAQI

27°C21/34°C

7th Jul 2025525 AMAQI
7th Jul 2025506 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025528 AMAQI
7th Jul 2025469 AMAQI
7th Jul 20255210 AMAQI
7th Jul 20254911 AMAQI
7th Jul 20254912 PMAQI
7th Jul 2025551 PMAQI
7th Jul 2025582 PMAQI
7th Jul 2025583 PMAQI
7th Jul 2025604 PMAQI
7th Jul 2025655 PMAQI
7th Jul 2025676 PMAQI
7th Jul 2025657 PMAQI
7th Jul 2025668 PMAQI
7th Jul 2025549 PMAQI
7th Jul 20255510 PMAQI
7th Jul 20255411 PMAQI
8th Jul 20255412 AMAQI
8th Jul 2025551 AMAQI
8th Jul 2025542 AMAQI
8th Jul 2025513 AMAQI
8th Jul 2025524 AMAQI

28°C23/34°C

8th Jul 2025525 AMAQI
8th Jul 2025526 AMAQI
8th Jul 2025527 AMAQI
8th Jul 2025528 AMAQI
8th Jul 2025699 AMAQI
8th Jul 20257410 AMAQI
8th Jul 20257511 AMAQI
8th Jul 20257312 PMAQI
8th Jul 2025611 PMAQI
8th Jul 2025612 PMAQI
8th Jul 2025613 PMAQI
8th Jul 2025614 PMAQI
8th Jul 2025605 PMAQI
8th Jul 2025626 PMAQI
8th Jul 2025617 PMAQI
8th Jul 2025618 PMAQI
8th Jul 2025569 PMAQI
8th Jul 20255410 PMAQI
8th Jul 20255411 PMAQI
9th Jul 20255412 AMAQI
9th Jul 2025541 AMAQI
9th Jul 2025532 AMAQI
9th Jul 2025543 AMAQI
9th Jul 2025544 AMAQI

29°C23/36°C

9th Jul 2025545 AMAQI
9th Jul 2025546 AMAQI
9th Jul 2025547 AMAQI
9th Jul 2025548 AMAQI
9th Jul 2025489 AMAQI
9th Jul 20254210 AMAQI
9th Jul 20254411 AMAQI
9th Jul 20254212 PMAQI
9th Jul 2025491 PMAQI
9th Jul 2025452 PMAQI
9th Jul 2025463 PMAQI
9th Jul 2025474 PMAQI
9th Jul 2025445 PMAQI
9th Jul 2025446 PMAQI
9th Jul 2025487 PMAQI
9th Jul 2025488 PMAQI
9th Jul 2025549 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255412 AMAQI
10th Jul 2025541 AMAQI
10th Jul 2025542 AMAQI
10th Jul 2025543 AMAQI
10th Jul 2025544 AMAQI

29°C24/35°C

10th Jul 2025545 AMAQI
10th Jul 2025546 AMAQI
10th Jul 2025547 AMAQI
10th Jul 2025558 AMAQI
10th Jul 2025339 AMAQI
10th Jul 20253010 AMAQI
10th Jul 20253011 AMAQI
10th Jul 20252812 PMAQI
10th Jul 2025421 PMAQI
10th Jul 2025432 PMAQI
10th Jul 2025423 PMAQI
10th Jul 2025444 PMAQI
10th Jul 2025455 PMAQI
10th Jul 2025446 PMAQI
10th Jul 2025437 PMAQI
10th Jul 2025448 PMAQI
10th Jul 2025549 PMAQI
10th Jul 20255810 PMAQI
10th Jul 20255711 PMAQI
11th Jul 20255612 AMAQI
11th Jul 2025571 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025583 AMAQI
11th Jul 2025584 AMAQI

27°C22/34°C

11th Jul 2025585 AMAQI
11th Jul 2025576 AMAQI
11th Jul 2025557 AMAQI
11th Jul 2025548 AMAQI
11th Jul 2025389 AMAQI
11th Jul 20253010 AMAQI
11th Jul 20253011 AMAQI
11th Jul 20253212 PMAQI
11th Jul 2025461 PMAQI
11th Jul 2025422 PMAQI
11th Jul 2025443 PMAQI
11th Jul 2025464 PMAQI
11th Jul 2025475 PMAQI
11th Jul 2025466 PMAQI
11th Jul 2025467 PMAQI
11th Jul 2025488 PMAQI
11th Jul 2025549 PMAQI
11th Jul 20255410 PMAQI
11th Jul 20255511 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025551 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025573 AMAQI
12th Jul 2025574 AMAQI

26°C20/33°C

12th Jul 2025565 AMAQI
12th Jul 2025566 AMAQI
12th Jul 2025567 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025359 AMAQI
12th Jul 20252610 AMAQI
12th Jul 20252711 AMAQI
12th Jul 20252412 PMAQI
12th Jul 2025451 PMAQI
12th Jul 2025442 PMAQI
12th Jul 2025453 PMAQI
12th Jul 2025464 PMAQI
12th Jul 2025545 PMAQI
12th Jul 2025456 PMAQI
12th Jul 2025477 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025551 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025553 AMAQI
13th Jul 2025554 AMAQI

26°C19/33°C

13th Jul 2025545 AMAQI
13th Jul 2025546 AMAQI
13th Jul 2025547 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025559 AMAQI
13th Jul 20255710 AMAQI
13th Jul 20255811 AMAQI
13th Jul 20255612 PMAQI
13th Jul 2025581 PMAQI
13th Jul 2025622 PMAQI
13th Jul 2025653 PMAQI
13th Jul 2025654 PMAQI
13th Jul 2025625 PMAQI
13th Jul 2025636 PMAQI
13th Jul 2025627 PMAQI
13th Jul 2025608 PMAQI
13th Jul 2025579 PMAQI
13th Jul 20255710 PMAQI
13th Jul 20255711 PMAQI
14th Jul 20255512 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025542 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025554 AMAQI

24°C19/28°C

14th Jul 2025555 AMAQI
14th Jul 2025556 AMAQI
14th Jul 2025557 AMAQI
14th Jul 2025558 AMAQI
14th Jul 2025599 AMAQI
14th Jul 20256010 AMAQI
14th Jul 20257211 AMAQI
14th Jul 20257312 PMAQI
14th Jul 2025691 PMAQI
14th Jul 2025682 PMAQI
14th Jul 2025663 PMAQI
14th Jul 2025624 PMAQI
14th Jul 2025535 PMAQI
14th Jul 2025516 PMAQI
14th Jul 2025467 PMAQI
14th Jul 2025418 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255311 PMAQI
15th Jul 20255212 AMAQI
15th Jul 2025541 AMAQI
15th Jul 2025552 AMAQI
15th Jul 2025553 AMAQI
15th Jul 2025554 AMAQI

23°C20/28°C

15th Jul 2025565 AMAQI
15th Jul 2025566 AMAQI
15th Jul 2025557 AMAQI
15th Jul 2025568 AMAQI
15th Jul 2025259 AMAQI
15th Jul 20251310 AMAQI
15th Jul 20251511 AMAQI
15th Jul 20251712 PMAQI
15th Jul 2025341 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025313 PMAQI
15th Jul 2025314 PMAQI
15th Jul 2025365 PMAQI
15th Jul 2025346 PMAQI
15th Jul 2025367 PMAQI
15th Jul 2025398 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255212 AMAQI
16th Jul 2025541 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025543 AMAQI
16th Jul 2025544 AMAQI

21°C19/25°C

16th Jul 2025535 AMAQI
16th Jul 2025536 AMAQI
16th Jul 2025537 AMAQI
16th Jul 2025538 AMAQI
16th Jul 2025559 AMAQI
16th Jul 20255410 AMAQI
16th Jul 20255411 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025461 PMAQI
16th Jul 2025482 PMAQI
16th Jul 2025473 PMAQI
16th Jul 2025434 PMAQI
16th Jul 2025495 PMAQI
16th Jul 2025446 PMAQI
16th Jul 2025357 PMAQI
16th Jul 2025338 PMAQI
16th Jul 2025529 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255212 AMAQI
17th Jul 2025531 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025533 AMAQI
17th Jul 2025534 AMAQI

21°C19/25°C

17th Jul 2025535 AMAQI
17th Jul 2025536 AMAQI
17th Jul 2025537 AMAQI
17th Jul 2025538 AMAQI
17th Jul 2025249 AMAQI
17th Jul 20251510 AMAQI
17th Jul 20251411 AMAQI
17th Jul 20251412 PMAQI
17th Jul 2025241 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025223 PMAQI
17th Jul 2025204 PMAQI
17th Jul 2025245 PMAQI
17th Jul 2025226 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025288 PMAQI
17th Jul 2025429 PMAQI
17th Jul 20254110 PMAQI
17th Jul 20254211 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025481 AMAQI
18th Jul 2025532 AMAQI
18th Jul 2025533 AMAQI
18th Jul 2025524 AMAQI

23°C20/26°C

18th Jul 2025525 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025528 AMAQI
18th Jul 2025289 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252611 AMAQI
18th Jul 20252612 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025423 PMAQI
18th Jul 2025394 PMAQI
18th Jul 2025375 PMAQI
18th Jul 2025376 PMAQI
18th Jul 2025377 PMAQI
18th Jul 2025398 PMAQI
18th Jul 2025429 PMAQI
18th Jul 20254310 PMAQI
18th Jul 20254411 PMAQI
19th Jul 20254312 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025502 AMAQI
19th Jul 2025513 AMAQI
19th Jul 2025504 AMAQI

23°C21/27°C

19th Jul 2025475 AMAQI
19th Jul 2025486 AMAQI
19th Jul 2025487 AMAQI
19th Jul 2025488 AMAQI
19th Jul 2025229 AMAQI
19th Jul 20251310 AMAQI
19th Jul 20251411 AMAQI
19th Jul 20251412 PMAQI
19th Jul 2025191 PMAQI
19th Jul 2025182 PMAQI
19th Jul 2025173 PMAQI
19th Jul 2025194 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025186 PMAQI
19th Jul 2025177 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253511 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025431 AMAQI
20th Jul 2025482 AMAQI
20th Jul 2025483 AMAQI
20th Jul 2025464 AMAQI

25°C21/28°C

20th Jul 2025425 AMAQI
20th Jul 2025446 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025309 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252711 AMAQI
20th Jul 20253312 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025352 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025354 PMAQI
20th Jul 2025445 PMAQI
20th Jul 2025476 PMAQI
20th Jul 2025517 PMAQI
20th Jul 2025488 PMAQI
20th Jul 2025449 PMAQI
20th Jul 20254710 PMAQI
20th Jul 20254811 PMAQI
21st Jul 20254912 AMAQI
21st Jul 2025431 AMAQI
21st Jul 2025432 AMAQI
21st Jul 2025433 AMAQI
21st Jul 2025434 AMAQI

26°C22/32°C

21st Jul 2025425 AMAQI
21st Jul 2025426 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025418 AMAQI
21st Jul 2025489 AMAQI
21st Jul 20255110 AMAQI
21st Jul 20254711 AMAQI
21st Jul 20255112 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025352 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025304 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025286 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025359 PMAQI
21st Jul 20253410 PMAQI
21st Jul 20253411 PMAQI
22nd Jul 20253412 AMAQI
22nd Jul 2025441 AMAQI
22nd Jul 2025442 AMAQI
22nd Jul 2025443 AMAQI
22nd Jul 2025444 AMAQI

27°C23/31°C

22nd Jul 2025445 AMAQI
22nd Jul 2025466 AMAQI
22nd Jul 2025447 AMAQI
22nd Jul 2025448 AMAQI
22nd Jul 2025299 AMAQI
22nd Jul 20252610 AMAQI
22nd Jul 20253011 AMAQI
22nd Jul 20252912 PMAQI
22nd Jul 2025351 PMAQI
22nd Jul 2025382 PMAQI
22nd Jul 2025343 PMAQI
22nd Jul 2025344 PMAQI
22nd Jul 2025325 PMAQI
22nd Jul 2025346 PMAQI
22nd Jul 2025337 PMAQI
22nd Jul 2025358 PMAQI
22nd Jul 2025399 PMAQI
22nd Jul 20254010 PMAQI
22nd Jul 20253911 PMAQI
23rd Jul 20253612 AMAQI
23rd Jul 2025381 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025433 AMAQI
23rd Jul 2025424 AMAQI

26°C23/30°C

23rd Jul 2025405 AMAQI
23rd Jul 2025406 AMAQI
23rd Jul 2025417 AMAQI
23rd Jul 2025408 AMAQI
23rd Jul 2025409 AMAQI
23rd Jul 20254310 AMAQI
23rd Jul 20255211 AMAQI
23rd Jul 20255212 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025532 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025544 PMAQI
23rd Jul 2025535 PMAQI
23rd Jul 2025546 PMAQI
23rd Jul 2025537 PMAQI
23rd Jul 2025538 PMAQI
23rd Jul 2025529 PMAQI
23rd Jul 20255110 PMAQI
23rd Jul 20255011 PMAQI
24th Jul 20255012 AMAQI
24th Jul 2025421 AMAQI
24th Jul 2025422 AMAQI
24th Jul 2025423 AMAQI
24th Jul 2025424 AMAQI

26°C23/31°C

24th Jul 2025425 AMAQI
24th Jul 2025426 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025489 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255711 AMAQI
24th Jul 20256112 PMAQI
24th Jul 2025591 PMAQI
24th Jul 2025622 PMAQI
24th Jul 2025603 PMAQI
24th Jul 2025614 PMAQI
24th Jul 2025635 PMAQI
24th Jul 2025666 PMAQI
24th Jul 2025647 PMAQI
24th Jul 2025638 PMAQI
24th Jul 2025579 PMAQI
24th Jul 20255910 PMAQI
24th Jul 20255811 PMAQI
25th Jul 20255912 AMAQI
25th Jul 2025611 AMAQI
25th Jul 2025522 AMAQI
25th Jul 2025443 AMAQI
25th Jul 2025474 AMAQI

27°C23/33°C

25th Jul 2025505 AMAQI
25th Jul 2025506 AMAQI
25th Jul 2025507 AMAQI
25th Jul 2025508 AMAQI
25th Jul 2025669 AMAQI
25th Jul 20257310 AMAQI
25th Jul 20257011 AMAQI
25th Jul 20256312 PMAQI
25th Jul 2025551 PMAQI
25th Jul 2025552 PMAQI
25th Jul 2025563 PMAQI
25th Jul 2025544 PMAQI
25th Jul 2025545 PMAQI
25th Jul 2025496 PMAQI
25th Jul 2025527 PMAQI
25th Jul 2025558 PMAQI
25th Jul 2025519 PMAQI
25th Jul 20255210 PMAQI
25th Jul 20255411 PMAQI
26th Jul 20255612 AMAQI
26th Jul 2025531 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025533 AMAQI
26th Jul 2025534 AMAQI

28°C23/35°C

26th Jul 2025545 AMAQI
26th Jul 2025546 AMAQI
26th Jul 2025547 AMAQI
26th Jul 2025548 AMAQI
26th Jul 2025509 AMAQI
26th Jul 20253710 AMAQI
26th Jul 20253311 AMAQI
26th Jul 20253412 PMAQI
26th Jul 2025341 PMAQI
26th Jul 2025332 PMAQI
26th Jul 2025343 PMAQI
26th Jul 2025364 PMAQI
26th Jul 2025325 PMAQI
26th Jul 2025266 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025408 PMAQI
26th Jul 2025509 PMAQI
26th Jul 20254910 PMAQI
26th Jul 20254811 PMAQI
27th Jul 20254912 AMAQI
27th Jul 2025531 AMAQI
27th Jul 2025532 AMAQI
27th Jul 2025533 AMAQI
27th Jul 2025534 AMAQI

29°C24/35°C

27th Jul 2025525 AMAQI
27th Jul 2025526 AMAQI
27th Jul 2025527 AMAQI
27th Jul 2025528 AMAQI
27th Jul 2025439 AMAQI
27th Jul 20253210 AMAQI
27th Jul 20252211 AMAQI
27th Jul 20252012 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025262 PMAQI
27th Jul 2025213 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025305 PMAQI
27th Jul 2025326 PMAQI
27th Jul 2025387 PMAQI
27th Jul 2025398 PMAQI
27th Jul 2025489 PMAQI
27th Jul 20255110 PMAQI
27th Jul 20255211 PMAQI
28th Jul 20255212 AMAQI
28th Jul 2025521 AMAQI
28th Jul 2025522 AMAQI
28th Jul 2025523 AMAQI
28th Jul 2025514 AMAQI

29°C24/35°C

28th Jul 2025505 AMAQI
28th Jul 2025496 AMAQI
28th Jul 2025507 AMAQI
28th Jul 2025508 AMAQI
28th Jul 2025569 AMAQI
28th Jul 20255810 AMAQI
28th Jul 20256211 AMAQI
28th Jul 20256212 PMAQI
28th Jul 2025601 PMAQI
28th Jul 2025602 PMAQI
28th Jul 2025573 PMAQI
28th Jul 2025554 PMAQI
28th Jul 2025615 PMAQI
28th Jul 2025596 PMAQI
28th Jul 2025567 PMAQI
28th Jul 2025538 PMAQI
28th Jul 2025529 PMAQI
28th Jul 20255310 PMAQI
28th Jul 20255411 PMAQI
29th Jul 20255512 AMAQI
29th Jul 2025531 AMAQI
29th Jul 2025522 AMAQI
29th Jul 2025513 AMAQI
29th Jul 2025524 AMAQI

28°C24/33°C

29th Jul 2025535 AMAQI
29th Jul 2025526 AMAQI
29th Jul 2025537 AMAQI
29th Jul 2025538 AMAQI
29th Jul 2025619 AMAQI
29th Jul 20256510 AMAQI
29th Jul 20257011 AMAQI
29th Jul 20256412 PMAQI
29th Jul 2025611 PMAQI
29th Jul 2025602 PMAQI
29th Jul 2025583 PMAQI
29th Jul 2025554 PMAQI
29th Jul 2025535 PMAQI
29th Jul 2025556 PMAQI
29th Jul 2025617 PMAQI
29th Jul 2025668 PMAQI
29th Jul 2025609 PMAQI
29th Jul 20255710 PMAQI
29th Jul 20255911 PMAQI
30th Jul 20255812 AMAQI
30th Jul 2025541 AMAQI
30th Jul 2025532 AMAQI
30th Jul 2025543 AMAQI
30th Jul 2025544 AMAQI

28°C23/35°C

30th Jul 2025565 AMAQI
30th Jul 2025566 AMAQI
30th Jul 2025567 AMAQI
30th Jul 2025568 AMAQI
30th Jul 2025609 AMAQI
30th Jul 20256010 AMAQI
30th Jul 20256111 AMAQI
30th Jul 20256112 PMAQI
30th Jul 2025591 PMAQI
30th Jul 2025562 PMAQI
30th Jul 2025533 PMAQI
30th Jul 2025494 PMAQI
30th Jul 2025445 PMAQI
30th Jul 2025466 PMAQI
30th Jul 2025457 PMAQI
30th Jul 2025478 PMAQI
30th Jul 2025549 PMAQI
30th Jul 20255410 PMAQI
30th Jul 20255411 PMAQI
31st Jul 20255512 AMAQI
31st Jul 2025571 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025564 AMAQI

28°C23/34°C

31st Jul 2025565 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255610 AMAQI
31st Jul 20254511 AMAQI
31st Jul 20253912 PMAQI
31st Jul 2025421 PMAQI
31st Jul 2025462 PMAQI
31st Jul 2025493 PMAQI
31st Jul 2025524 PMAQI
31st Jul 2025525 PMAQI
31st Jul 2025466 PMAQI
31st Jul 2025407 PMAQI
31st Jul 2025468 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255610 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255512 AMAQI
1st Aug 2025541 AMAQI
1st Aug 2025542 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025564 AMAQI

27°C24/33°C

1st Aug 2025565 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025557 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025549 AMAQI
1st Aug 20255910 AMAQI
1st Aug 20255711 AMAQI
1st Aug 20255512 PMAQI
1st Aug 2025591 PMAQI
1st Aug 2025582 PMAQI
1st Aug 2025603 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025616 PMAQI
1st Aug 2025587 PMAQI
1st Aug 2025568 PMAQI
1st Aug 2025629 PMAQI
1st Aug 20256110 PMAQI
1st Aug 20256011 PMAQI
2nd Aug 20256012 AMAQI
2nd Aug 2025541 AMAQI
2nd Aug 2025552 AMAQI
2nd Aug 2025553 AMAQI
2nd Aug 2025554 AMAQI

28°C24/34°C

2nd Aug 2025555 AMAQI
2nd Aug 2025556 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025568 AMAQI
2nd Aug 2025779 AMAQI
2nd Aug 20257710 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20258012 PMAQI
2nd Aug 2025761 PMAQI
2nd Aug 2025572 PMAQI
2nd Aug 2025583 PMAQI
2nd Aug 2025634 PMAQI
2nd Aug 2025625 PMAQI
2nd Aug 2025696 PMAQI
2nd Aug 2025647 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20255712 AMAQI
3rd Aug 2025551 AMAQI
3rd Aug 2025552 AMAQI
3rd Aug 2025553 AMAQI
3rd Aug 2025574 AMAQI

28°C24/32°C

3rd Aug 2025585 AMAQI
3rd Aug 2025586 AMAQI
3rd Aug 2025587 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025649 AMAQI
3rd Aug 20256410 AMAQI
3rd Aug 20256411 AMAQI
3rd Aug 20256712 PMAQI
3rd Aug 2025681 PMAQI
3rd Aug 2025702 PMAQI
3rd Aug 2025723 PMAQI
3rd Aug 2025674 PMAQI
3rd Aug 2025665 PMAQI
3rd Aug 2025666 PMAQI
3rd Aug 2025647 PMAQI
3rd Aug 2025608 PMAQI
3rd Aug 2025589 PMAQI
3rd Aug 20255810 PMAQI
3rd Aug 20255211 PMAQI
4th Aug 20255312 AMAQI
4th Aug 2025561 AMAQI
4th Aug 2025562 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025584 AMAQI

26°C23/28°C

4th Aug 2025585 AMAQI
4th Aug 2025586 AMAQI
4th Aug 2025587 AMAQI
4th Aug 2025598 AMAQI
4th Aug 2025369 AMAQI
4th Aug 20253510 AMAQI
4th Aug 20254011 AMAQI
4th Aug 20253712 PMAQI
4th Aug 2025431 PMAQI
4th Aug 2025362 PMAQI
4th Aug 2025353 PMAQI
4th Aug 2025394 PMAQI
4th Aug 2025445 PMAQI
4th Aug 2025426 PMAQI
4th Aug 2025497 PMAQI
4th Aug 2025548 PMAQI
4th Aug 2025569 PMAQI
4th Aug 20255610 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255412 AMAQI
5th Aug 2025541 AMAQI
5th Aug 2025562 AMAQI
5th Aug 2025563 AMAQI
5th Aug 2025554 AMAQI

26°C23/30°C

5th Aug 2025545 AMAQI
5 AM
5th Aug 2025556 AMAQI
5th Aug 2025557 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025489 AMAQI
5th Aug 20255110 AMAQI
5th Aug 20255511 AMAQI
5th Aug 20255912 PMAQI
12 PM
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

52AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
9 AM - 7 PM

46AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 52), while the lowest AQI was between 9 AM to 7 PM (Avg. 46).
Night time
Avg. Highest Time
12 AM - 4 AM

52AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM

48AQI

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. 52), while the lowest AQI was between 8 PM to 8 PM (Avg. 48).

2025 Days Vs Air Quality

Seongseong Dong, Chonan, Chungnam, South Korea

2025

28%

60

67%

145

5%

11

Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)

Good
60 Days
Moderate
145 Days
Poor
11 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 28%

Health Risk Level:

Very high

In 2025, 28% 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

Seongseong Dong, Chonan, Chungnam, 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
67AQI
2nd January 2025
65AQI
3rd January 2025
58AQI
4th January 2025
59AQI
5th January 2025
62AQI
6th January 2025
89AQI
7th January 2025
56AQI
8th January 2025
65AQI
9th January 2025
39AQI
10th January 2025
57AQI
11th January 2025
58AQI
12th January 2025
78AQI
13th January 2025
79AQI
14th January 2025
88AQI
15th January 2025
57AQI
16th January 2025
65AQI
17th January 2025
80AQI
18th January 2025
76AQI
19th January 2025
78AQI
20th January 2025
115AQI
21st January 2025
135AQI
22nd January 2025
130AQI
23rd January 2025
119AQI
24th January 2025
114AQI
25th January 2025
80AQI
26th January 2025
56AQI
27th January 2025
62AQI
28th January 2025
49AQI
29th January 2025
55AQI
30th January 2025
52AQI
31st January 2025
74AQI
1st February 2025
79AQI
2nd February 2025
85AQI
3rd February 2025
55AQI
4th February 2025
49AQI
5th February 2025
44AQI
6th February 2025
50AQI
7th February 2025
44AQI
8th February 2025
39AQI
9th February 2025
50AQI
10th February 2025
53AQI
11th February 2025
74AQI
12th February 2025
68AQI
13th February 2025
51AQI
14th February 2025
76AQI
15th February 2025
58AQI
16th February 2025
101AQI
17th February 2025
52AQI
18th February 2025
57AQI
19th February 2025
44AQI
20th February 2025
50AQI
21st February 2025
48AQI
22nd February 2025
51AQI
23rd February 2025
47AQI
24th February 2025
49AQI
25th February 2025
45AQI
26th February 2025
72AQI
27th February 2025
59AQI
28th February 2025
81AQI
1st March 2025
98AQI
2nd March 2025
82AQI
3rd March 2025
54AQI
4th March 2025
46AQI
5th March 2025
46AQI
6th March 2025
76AQI
7th March 2025
90AQI
8th March 2025
89AQI
9th March 2025
102AQI
10th March 2025
111AQI
11th March 2025
106AQI
12th March 2025
96AQI
13th March 2025
98AQI
14th March 2025
87AQI
15th March 2025
58AQI
16th March 2025
77AQI
17th March 2025
65AQI
18th March 2025
75AQI
19th March 2025
80AQI
20th March 2025
84AQI
21st March 2025
90AQI
22nd March 2025
99AQI
23rd March 2025
105AQI
24th March 2025
99AQI
25th March 2025
121AQI
26th March 2025
85AQI
27th March 2025
89AQI
28th March 2025
66AQI
29th March 2025
53AQI
30th March 2025
51AQI
31st March 2025
59AQI
1st April 2025
75AQI
2nd April 2025
77AQI
3rd April 2025
82AQI
4th April 2025
82AQI
5th April 2025
73AQI
6th April 2025
67AQI
7th April 2025
67AQI
8th April 2025
72AQI
9th April 2025
63AQI
10th April 2025
74AQI
11th April 2025
83AQI
12th April 2025
61AQI
13th April 2025
61AQI
14th April 2025
45AQI
15th April 2025
58AQI
16th April 2025
58AQI
17th April 2025
64AQI
18th April 2025
77AQI
19th April 2025
49AQI
20th April 2025
66AQI
21st April 2025
53AQI
22nd April 2025
49AQI
23rd April 2025
42AQI
24th April 2025
60AQI
25th April 2025
61AQI
26th April 2025
52AQI
27th April 2025
42AQI
28th April 2025
61AQI
29th April 2025
66AQI
30th April 2025
61AQI
1st May 2025
56AQI
2nd May 2025
51AQI
3rd May 2025
52AQI
4th May 2025
47AQI
5th May 2025
49AQI
6th May 2025
49AQI
7th May 2025
52AQI
8th May 2025
64AQI
9th May 2025
47AQI
10th May 2025
50AQI
11th May 2025
65AQI
12th May 2025
69AQI
13th May 2025
71AQI
14th May 2025
73AQI
15th May 2025
60AQI
16th May 2025
46AQI
17th May 2025
37AQI
18th May 2025
58AQI
19th May 2025
60AQI
20th May 2025
51AQI
21st May 2025
50AQI
22nd May 2025
55AQI
23rd May 2025
58AQI
24th May 2025
42AQI
25th May 2025
42AQI
26th May 2025
58AQI
27th May 2025
68AQI
28th May 2025
70AQI
29th May 2025
74AQI
30th May 2025
69AQI
31st May 2025
73AQI
1st June 2025
83AQI
2nd June 2025
97AQI
3rd June 2025
68AQI
4th June 2025
54AQI
5th June 2025
47AQI
6th June 2025
53AQI
7th June 2025
60AQI
8th June 2025
56AQI
9th June 2025
57AQI
10th June 2025
52AQI
11th June 2025
45AQI
12th June 2025
50AQI
13th June 2025
63AQI
14th June 2025
45AQI
15th June 2025
50AQI
16th June 2025
54AQI
17th June 2025
58AQI
18th June 2025
62AQI
19th June 2025
63AQI
20th June 2025
52AQI
21st June 2025
50AQI
22nd June 2025
48AQI
23rd June 2025
52AQI
24th June 2025
54AQI
25th June 2025
45AQI
26th June 2025
51AQI
27th June 2025
59AQI
28th June 2025
58AQI
29th June 2025
50AQI
30th June 2025
48AQI
1st July 2025
47AQI
2nd July 2025
43AQI
3rd July 2025
44AQI
4th July 2025
45AQI
5th July 2025
45AQI
6th July 2025
48AQI
7th July 2025
55AQI
8th July 2025
58AQI
9th July 2025
51AQI
10th July 2025
49AQI
11th July 2025
51AQI
12th July 2025
50AQI
13th July 2025
57AQI
14th July 2025
56AQI
15th July 2025
44AQI
16th July 2025
50AQI
17th July 2025
39AQI
18th July 2025
42AQI
19th July 2025
34AQI
20th July 2025
41AQI
21st July 2025
40AQI
22nd July 2025
37AQI
23rd July 2025
45AQI
24th July 2025
53AQI
25th July 2025
55AQI
26th July 2025
46AQI
27th July 2025
43AQI
28th July 2025
54AQI
29th July 2025
57AQI
30th July 2025
55AQI
31st July 2025
52AQI
1st August 2025
57AQI
2nd August 2025
62AQI
3rd August 2025
60AQI
4th August 2025
52AQI

75AQI

58AQI

82AQI

63AQI

57AQI

56AQI

48AQI

58AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202563AQI

2
24
5
12
15
1
2
24
5
5
25
10
21
10
20
19
12
4
60
145
11

Highest AQI recorded in

March

82AQI

Lowest AQI recorded in

July

48AQI

202465AQI

11
12
8
11
12
5
1
8
20
2
1
7
19
4
1
28
2
1
29
11
19
1
5
25
11
19
6
25
8
19
3
8
23
88
250
25
2

Highest AQI recorded in

April

72AQI

Lowest AQI recorded in

September

54AQI

202370AQI

5
17
6
3
1
19
4
4
4
17
9
1
2
22
5
1
6
20
5
3
27
9
20
2
10
21
14
15
1
14
15
2
15
13
1
11
14
4
2
94
220
39
10
1

Highest AQI recorded in

March

91AQI

Lowest AQI recorded in

November

51AQI

202275AQI

3
13
5
3
4
15
12
3
19
8
5
24
2
16
14
7
15
1
16
10
2
10
15
6
2
20
7
1
6
23
2
70
171
44
4

Highest AQI recorded in

February

97AQI

Lowest AQI recorded in

August

42AQI

202181AQI

21
10
14
11
3
11
14
5
1
1
24
5
2
23
4
1
1
3
18
9
10
21
14
17
19
11
4
21
6
4
18
6
2
7
13
9
2
64
212
74
12
2
1

Highest AQI recorded in

March

118AQI

Lowest AQI recorded in

September

49AQI

202078AQI

1
9
3
20
1
2
10
5
1
2
23
5
12
17
2
11
18
2
11
17
2
3
20
7
1
2
19
8
1
20
10
1
44
173
45
4

Highest AQI recorded in

December

96AQI

Lowest AQI recorded in

August

61AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
81AQI
Least Polluted Year Recorded
2025(Avg.)
63AQI

Seongseong Dong's annual 2025 AQI (63) shows an average percentage change of -14.3% (improved AQI) compared to previous years: 2020 (78), 2021 (81), 2022 (75), 2023 (70), 2024 (65).