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HistoryAQIPM2.5PM10COSO2NO2O3

Seo Myeon, Boryeong, 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+

September Air Quality Analysis

Seo Myeon, Boryeong, Chungnam, South Korea

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
28th Sep 2022
89AQI
Lowest AQI recorded on
15th Sep 2023
13AQI

Same Day Analysis (23rd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 35 of Good air quality, showing improvement over 2023, 2022 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 23rd Sep - 24th Sep 2025

Seo Myeon, Boryeong, Chungnam, South Korea

AQI
Day
Night
.

6 AM23rd Sep 2025

6 PM

5 AM24th Sep 2025

Day time
Avg. Highest Time
11AM23rd Sep

40AQI

Avg. Lowest Time
6PM23rd Sep

20AQI

Night time
Avg. Highest Time
11PM23rd Sep

38AQI

Avg. Lowest Time
7PM23rd Sep

22AQI

In the last 24 hours,

Seo Myeon's AQI reached its highest point of 40 at 11 AM during the Day, while the lowest point, 20, was recorded at 6 PM during the Day between 23rd Sep and 24th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Seo Myeon, Boryeong, Chungnam, South Korea

AugSep
25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th
Day
Night
25th Aug 2025506 AMAQI
25th Aug 2025507 AMAQI
25th Aug 2025508 AMAQI
25th Aug 2025449 AMAQI
25th Aug 20253710 AMAQI
25th Aug 20253211 AMAQI
25th Aug 20253412 PMAQI
25th Aug 2025451 PMAQI
25th Aug 2025452 PMAQI
25th Aug 2025403 PMAQI
25th Aug 2025344 PMAQI
25th Aug 2025325 PMAQI
25th Aug 2025256 PMAQI
25th Aug 2025337 PMAQI
25th Aug 2025378 PMAQI
25th Aug 2025449 PMAQI
25th Aug 20254410 PMAQI
25th Aug 20254011 PMAQI
26th Aug 20253912 AMAQI
26th Aug 2025481 AMAQI
26th Aug 2025502 AMAQI
26th Aug 2025503 AMAQI
26th Aug 2025504 AMAQI
26th Aug 2025495 AMAQI

27°C25/30°C

26th Aug 2025486 AMAQI
26th Aug 2025487 AMAQI
26th Aug 2025488 AMAQI
26th Aug 2025289 AMAQI
26th Aug 20252210 AMAQI
26th Aug 20253011 AMAQI
26th Aug 20253212 PMAQI
26th Aug 2025321 PMAQI
26th Aug 2025282 PMAQI
26th Aug 2025433 PMAQI
26th Aug 2025454 PMAQI
26th Aug 2025375 PMAQI
26th Aug 2025446 PMAQI
26th Aug 2025387 PMAQI
26th Aug 2025448 PMAQI
26th Aug 2025439 PMAQI
26th Aug 20254610 PMAQI
26th Aug 20254211 PMAQI
27th Aug 20254512 AMAQI
27th Aug 2025511 AMAQI
27th Aug 2025472 AMAQI
27th Aug 2025483 AMAQI
27th Aug 2025464 AMAQI
27th Aug 2025455 AMAQI

27°C24/29°C

27th Aug 2025446 AMAQI
27th Aug 2025447 AMAQI
27th Aug 2025448 AMAQI
27th Aug 2025429 AMAQI
27th Aug 20253910 AMAQI
27th Aug 20254311 AMAQI
27th Aug 20255012 PMAQI
27th Aug 2025431 PMAQI
27th Aug 2025432 PMAQI
27th Aug 2025413 PMAQI
27th Aug 2025494 PMAQI
27th Aug 2025545 PMAQI
27th Aug 2025506 PMAQI
27th Aug 2025517 PMAQI
27th Aug 2025448 PMAQI
27th Aug 2025469 PMAQI
27th Aug 20254910 PMAQI
27th Aug 20254911 PMAQI
28th Aug 20255012 AMAQI
28th Aug 2025511 AMAQI
28th Aug 2025472 AMAQI
28th Aug 2025473 AMAQI
28th Aug 2025474 AMAQI
28th Aug 2025475 AMAQI

26°C23/29°C

28th Aug 2025476 AMAQI
28th Aug 2025467 AMAQI
28th Aug 2025478 AMAQI
28th Aug 2025579 AMAQI
28th Aug 20255310 AMAQI
28th Aug 20255811 AMAQI
28th Aug 20255112 PMAQI
28th Aug 2025461 PMAQI
28th Aug 2025542 PMAQI
28th Aug 2025563 PMAQI
28th Aug 2025544 PMAQI
28th Aug 2025545 PMAQI
28th Aug 2025506 PMAQI
28th Aug 2025457 PMAQI
28th Aug 2025408 PMAQI
28th Aug 2025429 PMAQI
28th Aug 20254310 PMAQI
28th Aug 20255311 PMAQI
29th Aug 20255012 AMAQI
29th Aug 2025501 AMAQI
29th Aug 2025482 AMAQI
29th Aug 2025503 AMAQI
29th Aug 2025514 AMAQI
29th Aug 2025515 AMAQI

26°C22/29°C

29th Aug 2025516 AMAQI
29th Aug 2025517 AMAQI
29th Aug 2025518 AMAQI
29th Aug 2025459 AMAQI
29th Aug 20253610 AMAQI
29th Aug 20254511 AMAQI
29th Aug 20252412 PMAQI
29th Aug 2025301 PMAQI
29th Aug 2025312 PMAQI
29th Aug 2025303 PMAQI
29th Aug 2025294 PMAQI
29th Aug 2025325 PMAQI
29th Aug 2025286 PMAQI
29th Aug 2025377 PMAQI
29th Aug 2025358 PMAQI
29th Aug 2025389 PMAQI
29th Aug 20253610 PMAQI
29th Aug 20254211 PMAQI
30th Aug 20254212 AMAQI
30th Aug 2025521 AMAQI
30th Aug 2025502 AMAQI
30th Aug 2025503 AMAQI
30th Aug 2025494 AMAQI
30th Aug 2025495 AMAQI

27°C25/29°C

30th Aug 2025486 AMAQI
30th Aug 2025497 AMAQI
30th Aug 2025488 AMAQI
30th Aug 2025269 AMAQI
30th Aug 20253210 AMAQI
30th Aug 20253211 AMAQI
30th Aug 20252612 PMAQI
30th Aug 2025311 PMAQI
30th Aug 2025292 PMAQI
30th Aug 2025323 PMAQI
30th Aug 2025434 PMAQI
30th Aug 2025245 PMAQI
30th Aug 2025366 PMAQI
30th Aug 2025457 PMAQI
30th Aug 2025438 PMAQI
30th Aug 2025429 PMAQI
30th Aug 20254210 PMAQI
30th Aug 20254811 PMAQI
31st Aug 20254712 AMAQI
31st Aug 2025501 AMAQI
31st Aug 2025512 AMAQI
31st Aug 2025503 AMAQI
31st Aug 2025474 AMAQI
31st Aug 2025465 AMAQI

27°C24/30°C

31st Aug 2025476 AMAQI
31st Aug 2025467 AMAQI
31st Aug 2025468 AMAQI
31st Aug 2025449 AMAQI
31st Aug 20253810 AMAQI
31st Aug 20255211 AMAQI
31st Aug 20255112 PMAQI
31st Aug 2025571 PMAQI
31st Aug 2025572 PMAQI
31st Aug 2025463 PMAQI
31st Aug 2025414 PMAQI
31st Aug 2025385 PMAQI
31st Aug 2025386 PMAQI
31st Aug 2025277 PMAQI
31st Aug 2025368 PMAQI
31st Aug 2025409 PMAQI
31st Aug 20254410 PMAQI
31st Aug 20254011 PMAQI
1st Sep 20254312 AMAQI
1st Sep 2025481 AMAQI
1st Sep 2025482 AMAQI
1st Sep 2025493 AMAQI
1st Sep 2025494 AMAQI
1st Sep 2025505 AMAQI

27°C24/30°C

1st Sep 2025496 AMAQI
1st Sep 2025507 AMAQI
1st Sep 2025508 AMAQI
1st Sep 2025249 AMAQI
1st Sep 20252210 AMAQI
1st Sep 20252211 AMAQI
1st Sep 20251812 PMAQI
1st Sep 2025221 PMAQI
1st Sep 2025272 PMAQI
1st Sep 2025323 PMAQI
1st Sep 2025324 PMAQI
1st Sep 2025315 PMAQI
1st Sep 2025356 PMAQI
1st Sep 2025387 PMAQI
1st Sep 2025368 PMAQI
1st Sep 2025369 PMAQI
1st Sep 20253810 PMAQI
1st Sep 20253811 PMAQI
2nd Sep 20254312 AMAQI
2nd Sep 2025521 AMAQI
2nd Sep 2025462 AMAQI
2nd Sep 2025483 AMAQI
2nd Sep 2025454 AMAQI
2nd Sep 2025435 AMAQI

26°C24/30°C

2nd Sep 2025426 AMAQI
2nd Sep 2025427 AMAQI
2nd Sep 2025428 AMAQI
2nd Sep 2025519 AMAQI
2nd Sep 20255110 AMAQI
2nd Sep 20255011 AMAQI
2nd Sep 20254712 PMAQI
2nd Sep 2025441 PMAQI
2nd Sep 2025412 PMAQI
2nd Sep 2025283 PMAQI
2nd Sep 2025384 PMAQI
2nd Sep 2025385 PMAQI
2nd Sep 2025456 PMAQI
2nd Sep 2025507 PMAQI
2nd Sep 2025418 PMAQI
2nd Sep 2025439 PMAQI
2nd Sep 20254810 PMAQI
2nd Sep 20255111 PMAQI
3rd Sep 20254912 AMAQI
3rd Sep 2025451 AMAQI
3rd Sep 2025462 AMAQI
3rd Sep 2025463 AMAQI
3rd Sep 2025464 AMAQI
3rd Sep 2025465 AMAQI

25°C23/28°C

3rd Sep 2025456 AMAQI
3rd Sep 2025477 AMAQI
3rd Sep 2025478 AMAQI
3rd Sep 2025509 AMAQI
3rd Sep 20255510 AMAQI
3rd Sep 20255611 AMAQI
3rd Sep 20255512 PMAQI
3rd Sep 2025471 PMAQI
3rd Sep 2025512 PMAQI
3rd Sep 2025523 PMAQI
3rd Sep 2025484 PMAQI
3rd Sep 2025415 PMAQI
3rd Sep 2025546 PMAQI
3rd Sep 2025547 PMAQI
3rd Sep 2025508 PMAQI
3rd Sep 2025439 PMAQI
3rd Sep 20254610 PMAQI
3rd Sep 20254611 PMAQI
4th Sep 20254912 AMAQI
4th Sep 2025461 AMAQI
4th Sep 2025492 AMAQI
4th Sep 2025483 AMAQI
4th Sep 2025504 AMAQI
4th Sep 2025505 AMAQI

25°C21/30°C

4th Sep 2025496 AMAQI
4th Sep 2025487 AMAQI
4th Sep 2025488 AMAQI
4th Sep 2025409 AMAQI
4th Sep 20254210 AMAQI
4th Sep 20254211 AMAQI
4th Sep 20254012 PMAQI
4th Sep 2025481 PMAQI
4th Sep 2025452 PMAQI
4th Sep 2025483 PMAQI
4th Sep 2025434 PMAQI
4th Sep 2025615 PMAQI
4th Sep 2025486 PMAQI
4th Sep 2025487 PMAQI
4th Sep 2025388 PMAQI
4th Sep 2025449 PMAQI
4th Sep 20251710 PMAQI
4th Sep 20251611 PMAQI
5th Sep 20251612 AMAQI
5th Sep 2025361 AMAQI
5th Sep 2025502 AMAQI
5th Sep 2025503 AMAQI
5th Sep 2025494 AMAQI
5th Sep 2025495 AMAQI

24°C23/26°C

5th Sep 2025466 AMAQI
5th Sep 2025467 AMAQI
5th Sep 2025468 AMAQI
5th Sep 2025449 AMAQI
5th Sep 20254210 AMAQI
5th Sep 20253811 AMAQI
5th Sep 20254812 PMAQI
5th Sep 2025401 PMAQI
5th Sep 2025402 PMAQI
5th Sep 2025433 PMAQI
5th Sep 2025464 PMAQI
5th Sep 2025365 PMAQI
5th Sep 2025456 PMAQI
5th Sep 2025467 PMAQI
5th Sep 2025408 PMAQI
5th Sep 2025369 PMAQI
5th Sep 20254310 PMAQI
5th Sep 20254411 PMAQI
6th Sep 20254012 AMAQI
6th Sep 2025411 AMAQI
6th Sep 2025372 AMAQI
6th Sep 2025423 AMAQI
6th Sep 2025424 AMAQI
6th Sep 2025445 AMAQI

26°C22/30°C

6th Sep 2025456 AMAQI
6th Sep 2025477 AMAQI
6th Sep 2025438 AMAQI
6th Sep 2025349 AMAQI
6th Sep 20254710 AMAQI
6th Sep 20254511 AMAQI
6th Sep 20254312 PMAQI
6th Sep 2025341 PMAQI
6th Sep 2025242 PMAQI
6th Sep 2025213 PMAQI
6th Sep 2025264 PMAQI
6th Sep 2025305 PMAQI
6th Sep 2025336 PMAQI
6th Sep 2025287 PMAQI
6th Sep 2025368 PMAQI
6th Sep 2025339 PMAQI
6th Sep 20253910 PMAQI
6th Sep 20253411 PMAQI
7th Sep 20253712 AMAQI
7th Sep 2025421 AMAQI
7th Sep 2025422 AMAQI
7th Sep 2025423 AMAQI
7th Sep 2025424 AMAQI
7th Sep 2025445 AMAQI

26°C24/29°C

7th Sep 2025426 AMAQI
7th Sep 2025427 AMAQI
7th Sep 2025428 AMAQI
7th Sep 2025429 AMAQI
7th Sep 20254410 AMAQI
7th Sep 20253611 AMAQI
7th Sep 20253712 PMAQI
7th Sep 2025361 PMAQI
7th Sep 2025392 PMAQI
7th Sep 2025453 PMAQI
7th Sep 2025344 PMAQI
7th Sep 2025285 PMAQI
7th Sep 2025346 PMAQI
7th Sep 2025417 PMAQI
7th Sep 2025418 PMAQI
7th Sep 2025449 PMAQI
7th Sep 20254210 PMAQI
7th Sep 20254211 PMAQI
8th Sep 20253912 AMAQI
8th Sep 2025411 AMAQI
8th Sep 2025402 AMAQI
8th Sep 2025423 AMAQI
8th Sep 2025424 AMAQI
8th Sep 2025415 AMAQI

26°C23/27°C

8th Sep 2025416 AMAQI
8th Sep 2025437 AMAQI
8th Sep 2025448 AMAQI
8th Sep 2025469 AMAQI
8th Sep 20254410 AMAQI
8th Sep 20254511 AMAQI
8th Sep 20254912 PMAQI
8th Sep 2025361 PMAQI
8th Sep 2025502 PMAQI
8th Sep 2025523 PMAQI
8th Sep 2025534 PMAQI
8th Sep 2025425 PMAQI
8th Sep 2025416 PMAQI
8th Sep 2025467 PMAQI
8th Sep 2025448 PMAQI
8th Sep 2025509 PMAQI
8th Sep 20254710 PMAQI
8th Sep 20254411 PMAQI
9th Sep 20254212 AMAQI
9th Sep 2025411 AMAQI
9th Sep 2025422 AMAQI
9th Sep 2025443 AMAQI
9th Sep 2025444 AMAQI
9th Sep 2025445 AMAQI

23°C20/27°C

9th Sep 2025456 AMAQI
9th Sep 2025437 AMAQI
9th Sep 2025438 AMAQI
9th Sep 2025379 AMAQI
9th Sep 20254410 AMAQI
9th Sep 20255011 AMAQI
9th Sep 20254812 PMAQI
9th Sep 2025461 PMAQI
9th Sep 2025462 PMAQI
9th Sep 2025493 PMAQI
9th Sep 2025474 PMAQI
9th Sep 2025435 PMAQI
9th Sep 2025386 PMAQI
9th Sep 2025457 PMAQI
9th Sep 2025448 PMAQI
9th Sep 2025449 PMAQI
9th Sep 20253810 PMAQI
9th Sep 20253811 PMAQI
10th Sep 20254612 AMAQI
10th Sep 2025441 AMAQI
10th Sep 2025432 AMAQI
10th Sep 2025443 AMAQI
10th Sep 2025464 AMAQI
10th Sep 2025445 AMAQI

21°C19/23°C

10th Sep 2025456 AMAQI
10th Sep 2025457 AMAQI
10th Sep 2025428 AMAQI
10th Sep 2025559 AMAQI
10th Sep 20255910 AMAQI
10th Sep 20255711 AMAQI
10th Sep 20255812 PMAQI
10th Sep 2025491 PMAQI
10th Sep 2025522 PMAQI
10th Sep 2025543 PMAQI
10th Sep 2025504 PMAQI
10th Sep 2025505 PMAQI
10th Sep 2025506 PMAQI
10th Sep 2025467 PMAQI
10th Sep 2025488 PMAQI
10th Sep 2025489 PMAQI
10th Sep 20255010 PMAQI
10th Sep 20255211 PMAQI
11th Sep 20255012 AMAQI
11th Sep 2025481 AMAQI
11th Sep 2025452 AMAQI
11th Sep 2025463 AMAQI
11th Sep 2025464 AMAQI
11th Sep 2025465 AMAQI

23°C20/28°C

11th Sep 2025466 AMAQI
11th Sep 2025467 AMAQI
11th Sep 2025478 AMAQI
11th Sep 2025539 AMAQI
11th Sep 20255310 AMAQI
11th Sep 20254611 AMAQI
11th Sep 20254612 PMAQI
11th Sep 2025421 PMAQI
11th Sep 2025402 PMAQI
11th Sep 2025463 PMAQI
11th Sep 2025424 PMAQI
11th Sep 2025525 PMAQI
11th Sep 2025436 PMAQI
11th Sep 2025467 PMAQI
11th Sep 2025408 PMAQI
11th Sep 2025449 PMAQI
11th Sep 20254910 PMAQI
11th Sep 20254511 PMAQI
12th Sep 20254812 AMAQI
12th Sep 2025471 AMAQI
12th Sep 2025472 AMAQI
12th Sep 2025503 AMAQI
12th Sep 2025474 AMAQI
12th Sep 2025495 AMAQI

24°C20/29°C

12th Sep 2025506 AMAQI
12th Sep 2025507 AMAQI
12th Sep 2025518 AMAQI
12th Sep 2025359 AMAQI
12th Sep 20255110 AMAQI
12th Sep 20253511 AMAQI
12th Sep 20254212 PMAQI
12th Sep 2025421 PMAQI
12th Sep 2025362 PMAQI
12th Sep 2025333 PMAQI
12th Sep 2025334 PMAQI
12th Sep 2025375 PMAQI
12th Sep 2025406 PMAQI
12th Sep 2025347 PMAQI
12th Sep 2025408 PMAQI
12th Sep 2025449 PMAQI
12th Sep 20254210 PMAQI
12th Sep 20254811 PMAQI
13th Sep 20254412 AMAQI
13th Sep 2025491 AMAQI
13th Sep 2025482 AMAQI
13th Sep 2025453 AMAQI
13th Sep 2025464 AMAQI
13th Sep 2025495 AMAQI

23°C22/25°C

13th Sep 2025476 AMAQI
13th Sep 2025487 AMAQI
13th Sep 2025468 AMAQI
13th Sep 2025249 AMAQI
13th Sep 20253510 AMAQI
13th Sep 20253211 AMAQI
13th Sep 20253712 PMAQI
13th Sep 2025271 PMAQI
13th Sep 2025352 PMAQI
13th Sep 2025313 PMAQI
13th Sep 2025304 PMAQI
13th Sep 2025285 PMAQI
13th Sep 2025266 PMAQI
13th Sep 2025267 PMAQI
13th Sep 2025308 PMAQI
13th Sep 2025439 PMAQI
13th Sep 20255010 PMAQI
13th Sep 20255211 PMAQI
14th Sep 20254512 AMAQI
14th Sep 2025531 AMAQI
14th Sep 2025452 AMAQI
14th Sep 2025473 AMAQI
14th Sep 2025494 AMAQI
14th Sep 2025485 AMAQI

25°C22/26°C

14th Sep 2025446 AMAQI
14th Sep 2025477 AMAQI
14th Sep 2025488 AMAQI
14th Sep 2025369 AMAQI
14th Sep 20253110 AMAQI
14th Sep 20252611 AMAQI
14th Sep 20253312 PMAQI
14th Sep 2025381 PMAQI
14th Sep 2025332 PMAQI
14th Sep 2025393 PMAQI
14th Sep 2025334 PMAQI
14th Sep 2025365 PMAQI
14th Sep 2025326 PMAQI
14th Sep 2025467 PMAQI
14th Sep 2025458 PMAQI
14th Sep 2025369 PMAQI
14th Sep 20253910 PMAQI
14th Sep 20254411 PMAQI
15th Sep 20253912 AMAQI
15th Sep 2025431 AMAQI
15th Sep 2025502 AMAQI
15th Sep 2025503 AMAQI
15th Sep 2025484 AMAQI
15th Sep 2025505 AMAQI

24°C22/27°C

15th Sep 2025476 AMAQI
15th Sep 2025497 AMAQI
15th Sep 2025508 AMAQI
15th Sep 2025409 AMAQI
15th Sep 20253410 AMAQI
15th Sep 20253411 AMAQI
15th Sep 20254612 PMAQI
15th Sep 2025481 PMAQI
15th Sep 2025372 PMAQI
15th Sep 2025303 PMAQI
15th Sep 2025354 PMAQI
15th Sep 2025355 PMAQI
15th Sep 2025216 PMAQI
15th Sep 2025267 PMAQI
15th Sep 2025368 PMAQI
15th Sep 2025419 PMAQI
15th Sep 20254610 PMAQI
15th Sep 20254811 PMAQI
16th Sep 20254712 AMAQI
16th Sep 2025491 AMAQI
16th Sep 2025482 AMAQI
16th Sep 2025483 AMAQI
16th Sep 2025464 AMAQI
16th Sep 2025465 AMAQI

24°C21/28°C

16th Sep 2025456 AMAQI
16th Sep 2025467 AMAQI
16th Sep 2025448 AMAQI
16th Sep 2025489 AMAQI
16th Sep 20255210 AMAQI
16th Sep 20255211 AMAQI
16th Sep 20255212 PMAQI
16th Sep 2025451 PMAQI
16th Sep 2025362 PMAQI
16th Sep 2025383 PMAQI
16th Sep 2025424 PMAQI
16th Sep 2025245 PMAQI
16th Sep 2025216 PMAQI
16th Sep 2025207 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025339 PMAQI
16th Sep 20253710 PMAQI
16th Sep 20253411 PMAQI
17th Sep 20253612 AMAQI
17th Sep 2025481 AMAQI
17th Sep 2025482 AMAQI
17th Sep 2025483 AMAQI
17th Sep 2025464 AMAQI
17th Sep 2025485 AMAQI

25°C22/28°C

17th Sep 2025476 AMAQI
17th Sep 2025467 AMAQI
17th Sep 2025488 AMAQI
17th Sep 2025309 AMAQI
17th Sep 20253010 AMAQI
17th Sep 20252411 AMAQI
17th Sep 20252812 PMAQI
17th Sep 2025241 PMAQI
17th Sep 2025222 PMAQI
17th Sep 2025233 PMAQI
17th Sep 2025264 PMAQI
17th Sep 2025255 PMAQI
17th Sep 2025256 PMAQI
17th Sep 2025267 PMAQI
17th Sep 2025348 PMAQI
17th Sep 2025399 PMAQI
17th Sep 20253610 PMAQI
17th Sep 20253711 PMAQI
18th Sep 20253812 AMAQI
18th Sep 2025411 AMAQI
18th Sep 2025472 AMAQI
18th Sep 2025473 AMAQI
18th Sep 2025454 AMAQI
18th Sep 2025425 AMAQI

23°C21/26°C

18th Sep 2025426 AMAQI
18th Sep 2025427 AMAQI
18th Sep 2025428 AMAQI
18th Sep 2025509 AMAQI
18th Sep 20255710 AMAQI
18th Sep 20255611 AMAQI
18th Sep 20255512 PMAQI
18th Sep 2025591 PMAQI
18th Sep 2025562 PMAQI
18th Sep 2025563 PMAQI
18th Sep 2025564 PMAQI
18th Sep 2025535 PMAQI
18th Sep 2025466 PMAQI
18th Sep 2025447 PMAQI
18th Sep 2025428 PMAQI
18th Sep 2025379 PMAQI
18th Sep 20254010 PMAQI
18th Sep 20254411 PMAQI
19th Sep 20253712 AMAQI
19th Sep 2025441 AMAQI
19th Sep 2025432 AMAQI
19th Sep 2025443 AMAQI
19th Sep 2025454 AMAQI
19th Sep 2025485 AMAQI

22°C19/25°C

19th Sep 2025486 AMAQI
19th Sep 2025477 AMAQI
19th Sep 2025478 AMAQI
19th Sep 2025309 AMAQI
19th Sep 20253010 AMAQI
19th Sep 20253011 AMAQI
19th Sep 20253512 PMAQI
19th Sep 2025271 PMAQI
19th Sep 2025292 PMAQI
19th Sep 2025253 PMAQI
19th Sep 2025224 PMAQI
19th Sep 2025315 PMAQI
19th Sep 2025196 PMAQI
19th Sep 2025197 PMAQI
19th Sep 2025278 PMAQI
19th Sep 2025329 PMAQI
19th Sep 20253310 PMAQI
19th Sep 20253311 PMAQI
20th Sep 20253612 AMAQI
20th Sep 2025431 AMAQI
20th Sep 2025462 AMAQI
20th Sep 2025453 AMAQI
20th Sep 2025434 AMAQI
20th Sep 2025415 AMAQI

20°C18/23°C

20th Sep 2025416 AMAQI
20th Sep 2025427 AMAQI
20th Sep 2025428 AMAQI
20th Sep 2025249 AMAQI
20th Sep 20252010 AMAQI
20th Sep 20251911 AMAQI
20th Sep 20252012 PMAQI
20th Sep 2025251 PMAQI
20th Sep 2025222 PMAQI
20th Sep 2025183 PMAQI
20th Sep 2025264 PMAQI
20th Sep 2025265 PMAQI
20th Sep 2025236 PMAQI
20th Sep 2025217 PMAQI
20th Sep 2025248 PMAQI
20th Sep 2025309 PMAQI
20th Sep 20253210 PMAQI
20th Sep 20253611 PMAQI
21st Sep 20253412 AMAQI
21st Sep 2025391 AMAQI
21st Sep 2025422 AMAQI
21st Sep 2025423 AMAQI
21st Sep 2025394 AMAQI
21st Sep 2025375 AMAQI

20°C18/23°C

21st Sep 2025376 AMAQI
21st Sep 2025387 AMAQI
21st Sep 2025378 AMAQI
21st Sep 2025319 AMAQI
21st Sep 20254310 AMAQI
21st Sep 20255211 AMAQI
21st Sep 20254012 PMAQI
21st Sep 2025311 PMAQI
21st Sep 2025202 PMAQI
21st Sep 2025233 PMAQI
21st Sep 2025184 PMAQI
21st Sep 2025185 PMAQI
21st Sep 2025176 PMAQI
21st Sep 2025197 PMAQI
21st Sep 2025278 PMAQI
21st Sep 2025299 PMAQI
21st Sep 20253010 PMAQI
21st Sep 20253011 PMAQI
22nd Sep 20253412 AMAQI
22nd Sep 2025391 AMAQI
22nd Sep 2025392 AMAQI
22nd Sep 2025383 AMAQI
22nd Sep 2025384 AMAQI
22nd Sep 2025385 AMAQI

21°C17/25°C

22nd Sep 2025386 AMAQI
22nd Sep 2025377 AMAQI
22nd Sep 2025388 AMAQI
22nd Sep 2025239 AMAQI
22nd Sep 20253110 AMAQI
22nd Sep 20253211 AMAQI
22nd Sep 20254112 PMAQI
22nd Sep 2025171 PMAQI
22nd Sep 2025192 PMAQI
22nd Sep 2025223 PMAQI
22nd Sep 2025214 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025226 PMAQI
22nd Sep 2025227 PMAQI
22nd Sep 2025258 PMAQI
22nd Sep 2025299 PMAQI
22nd Sep 20253210 PMAQI
22nd Sep 20253211 PMAQI
23rd Sep 20253212 AMAQI
23rd Sep 2025391 AMAQI
23rd Sep 2025392 AMAQI
23rd Sep 2025383 AMAQI
23rd Sep 2025374 AMAQI
23rd Sep 2025365 AMAQI

21°C18/25°C

23rd Sep 2025356 AMAQI
23rd Sep 2025357 AMAQI
23rd Sep 2025358 AMAQI
23rd Sep 2025299 AMAQI
23rd Sep 20253310 AMAQI
23rd Sep 20254011 AMAQI
23rd Sep 20252812 PMAQI
23rd Sep 2025301 PMAQI
23rd Sep 2025312 PMAQI
23rd Sep 2025233 PMAQI
23rd Sep 2025224 PMAQI
23rd Sep 2025205 PMAQI
23rd Sep 2025206 PMAQI
23rd Sep 2025227 PMAQI
23rd Sep 2025248 PMAQI
23rd Sep 2025379 PMAQI
23rd Sep 20253410 PMAQI
23rd Sep 20253811 PMAQI
24th Sep 20253412 AMAQI
24th Sep 2025361 AMAQI
24th Sep 2025382 AMAQI
24th Sep 2025383 AMAQI
24th Sep 2025364 AMAQI
24th Sep 2025365 AMAQI

21°C19/24°C

24th Sep 2025376 AMAQI
6 AM
24th Sep 2025367 AMAQI
24th Sep 2025368 AMAQI
24th Sep 2025419 AMAQI
24th Sep 20254010 AMAQI
24th Sep 20253911 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 8 AM

45AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
1 PM - 6 PM

37AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 45), while the lowest AQI was between 1 PM to 6 PM (Avg. 37).
Night time
Avg. Highest Time
1 AM - 5 AM

45AQI

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

37AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 5 AM (Avg. 45), while the lowest AQI was between 7 PM to 8 PM (Avg. 37).

2025 Days Vs Air Quality

Seo Myeon, Boryeong, Chungnam, South Korea

2025

36%

95

61%

161

4%

10

Total number of days with different AQI categories in last 267 days in 2025 (98 days remaining)

Good
95 Days
Moderate
161 Days
Poor
10 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 36%

Health Risk Level:

High

In 2025, 36% of 267 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

Seo Myeon, Boryeong, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
71AQI
2nd January 2025
56AQI
3rd January 2025
57AQI
4th January 2025
53AQI
5th January 2025
66AQI
6th January 2025
80AQI
7th January 2025
57AQI
8th January 2025
60AQI
9th January 2025
43AQI
10th January 2025
59AQI
11th January 2025
62AQI
12th January 2025
73AQI
13th January 2025
85AQI
14th January 2025
102AQI
15th January 2025
59AQI
16th January 2025
72AQI
17th January 2025
68AQI
18th January 2025
85AQI
19th January 2025
78AQI
20th January 2025
110AQI
21st January 2025
130AQI
22nd January 2025
131AQI
23rd January 2025
98AQI
24th January 2025
97AQI
25th January 2025
69AQI
26th January 2025
56AQI
27th January 2025
66AQI
28th January 2025
54AQI
29th January 2025
54AQI
30th January 2025
62AQI
31st January 2025
64AQI
1st February 2025
85AQI
2nd February 2025
97AQI
3rd February 2025
61AQI
4th February 2025
53AQI
5th February 2025
47AQI
6th February 2025
53AQI
7th February 2025
45AQI
8th February 2025
40AQI
9th February 2025
48AQI
10th February 2025
56AQI
11th February 2025
65AQI
12th February 2025
57AQI
13th February 2025
51AQI
14th February 2025
65AQI
15th February 2025
57AQI
16th February 2025
97AQI
17th February 2025
54AQI
18th February 2025
62AQI
19th February 2025
44AQI
20th February 2025
49AQI
21st February 2025
50AQI
22nd February 2025
56AQI
23rd February 2025
53AQI
24th February 2025
53AQI
25th February 2025
51AQI
26th February 2025
69AQI
27th February 2025
61AQI
28th February 2025
64AQI
1st March 2025
73AQI
2nd March 2025
61AQI
3rd March 2025
51AQI
4th March 2025
44AQI
5th March 2025
37AQI
6th March 2025
76AQI
7th March 2025
86AQI
8th March 2025
82AQI
9th March 2025
94AQI
10th March 2025
95AQI
11th March 2025
97AQI
12th March 2025
102AQI
13th March 2025
78AQI
14th March 2025
84AQI
15th March 2025
63AQI
16th March 2025
70AQI
17th March 2025
69AQI
18th March 2025
88AQI
19th March 2025
82AQI
20th March 2025
90AQI
21st March 2025
101AQI
22nd March 2025
114AQI
23rd March 2025
116AQI
24th March 2025
110AQI
25th March 2025
127AQI
26th March 2025
86AQI
27th March 2025
86AQI
28th March 2025
60AQI
29th March 2025
50AQI
30th March 2025
47AQI
31st March 2025
61AQI
1st April 2025
70AQI
2nd April 2025
81AQI
3rd April 2025
86AQI
4th April 2025
86AQI
5th April 2025
70AQI
6th April 2025
71AQI
7th April 2025
68AQI
8th April 2025
74AQI
9th April 2025
69AQI
10th April 2025
73AQI
11th April 2025
79AQI
12th April 2025
60AQI
13th April 2025
63AQI
14th April 2025
45AQI
15th April 2025
59AQI
16th April 2025
63AQI
17th April 2025
68AQI
18th April 2025
72AQI
19th April 2025
49AQI
20th April 2025
68AQI
21st April 2025
59AQI
22nd April 2025
41AQI
23rd April 2025
48AQI
24th April 2025
57AQI
25th April 2025
51AQI
26th April 2025
48AQI
27th April 2025
41AQI
28th April 2025
53AQI
29th April 2025
61AQI
30th April 2025
58AQI
1st May 2025
56AQI
2nd May 2025
49AQI
3rd May 2025
48AQI
4th May 2025
48AQI
5th May 2025
47AQI
6th May 2025
49AQI
7th May 2025
51AQI
8th May 2025
54AQI
9th May 2025
44AQI
10th May 2025
54AQI
11th May 2025
64AQI
12th May 2025
67AQI
13th May 2025
71AQI
14th May 2025
69AQI
15th May 2025
51AQI
16th May 2025
42AQI
17th May 2025
43AQI
18th May 2025
56AQI
19th May 2025
57AQI
20th May 2025
37AQI
21st May 2025
42AQI
22nd May 2025
40AQI
23rd May 2025
56AQI
24th May 2025
52AQI
25th May 2025
48AQI
26th May 2025
63AQI
27th May 2025
61AQI
28th May 2025
72AQI
29th May 2025
74AQI
30th May 2025
78AQI
31st May 2025
77AQI
1st June 2025
80AQI
2nd June 2025
86AQI
3rd June 2025
69AQI
4th June 2025
63AQI
5th June 2025
55AQI
6th June 2025
59AQI
7th June 2025
66AQI
8th June 2025
57AQI
9th June 2025
58AQI
10th June 2025
50AQI
11th June 2025
59AQI
12th June 2025
62AQI
13th June 2025
61AQI
14th June 2025
55AQI
15th June 2025
55AQI
16th June 2025
56AQI
17th June 2025
57AQI
18th June 2025
61AQI
19th June 2025
64AQI
20th June 2025
43AQI
21st June 2025
44AQI
22nd June 2025
48AQI
23rd June 2025
55AQI
24th June 2025
54AQI
25th June 2025
48AQI
26th June 2025
58AQI
27th June 2025
63AQI
28th June 2025
54AQI
29th June 2025
45AQI
30th June 2025
43AQI
1st July 2025
42AQI
2nd July 2025
52AQI
3rd July 2025
54AQI
4th July 2025
50AQI
5th July 2025
47AQI
6th July 2025
45AQI
7th July 2025
52AQI
8th July 2025
70AQI
9th July 2025
57AQI
10th July 2025
54AQI
11th July 2025
56AQI
12th July 2025
53AQI
13th July 2025
61AQI
14th July 2025
56AQI
15th July 2025
43AQI
16th July 2025
54AQI
17th July 2025
48AQI
18th July 2025
48AQI
19th July 2025
41AQI
20th July 2025
49AQI
21st July 2025
44AQI
22nd July 2025
40AQI
23rd July 2025
47AQI
24th July 2025
55AQI
25th July 2025
67AQI
26th July 2025
61AQI
27th July 2025
49AQI
28th July 2025
55AQI
29th July 2025
58AQI
30th July 2025
65AQI
31st July 2025
58AQI
1st August 2025
56AQI
2nd August 2025
61AQI
3rd August 2025
58AQI
4th August 2025
51AQI
5th August 2025
50AQI
6th August 2025
52AQI
7th August 2025
45AQI
8th August 2025
51AQI
9th August 2025
55AQI
10th August 2025
52AQI
11th August 2025
54AQI
12th August 2025
48AQI
13th August 2025
40AQI
14th August 2025
36AQI
15th August 2025
36AQI
16th August 2025
35AQI
17th August 2025
40AQI
18th August 2025
49AQI
19th August 2025
47AQI
20th August 2025
48AQI
21st August 2025
47AQI
22nd August 2025
45AQI
23rd August 2025
48AQI
24th August 2025
47AQI
25th August 2025
42AQI
26th August 2025
42AQI
27th August 2025
46AQI
28th August 2025
49AQI
29th August 2025
41AQI
30th August 2025
41AQI
31st August 2025
44AQI
1st September 2025
38AQI
2nd September 2025
45AQI
3rd September 2025
48AQI
4th September 2025
43AQI
5th September 2025
37AQI
6th September 2025
37AQI
7th September 2025
40AQI
8th September 2025
44AQI
9th September 2025
43AQI
10th September 2025
49AQI
11th September 2025
46AQI
12th September 2025
43AQI
13th September 2025
39AQI
14th September 2025
41AQI
15th September 2025
41AQI
16th September 2025
40AQI
17th September 2025
36AQI
18th September 2025
47AQI
19th September 2025
35AQI
20th September 2025
31AQI
21st September 2025
32AQI
22nd September 2025
31AQI
23rd September 2025
35AQI
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
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

73AQI

59AQI

80AQI

63AQI

55AQI

58AQI

53AQI

47AQI

40AQI

No. of days

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

202559AQI

1
26
4
7
21
4
21
6
6
24
12
19
7
23
13
18
22
9
23
95
161
10

Highest AQI recorded in

March

80AQI

Lowest AQI recorded in

September

40AQI

202455AQI

13
12
6
12
11
5
1
6
23
2
9
21
22
9
14
16
25
5
14
17
21
9
14
17
9
19
2
9
22
168
181
15
1

Highest AQI recorded in

March

67AQI

Lowest AQI recorded in

July

37AQI

202354AQI

13
14
3
1
6
15
6
1
5
21
5
15
10
4
1
17
14
24
6
25
6
26
3
22
7
22
9
18
11
14
13
4
207
129
22
3

Highest AQI recorded in

February

82AQI

Lowest AQI recorded in

July

37AQI

202260AQI

9
17
5
7
7
7
8
22
1
8
21
1
3
27
1
18
12
8
14
1
16
12
21
10
9
19
2
14
16
1
122
177
18

Highest AQI recorded in

February

78AQI

Lowest AQI recorded in

August

44AQI

202163AQI

7
23
1
9
12
5
2
3
20
6
1
1
8
21
1
14
15
2
9
21
15
16
26
5
26
4
17
13
1
12
16
2
14
13
4
160
179
20
2
1
3

Highest AQI recorded in

March

102AQI

Lowest AQI recorded in

September

40AQI

202057AQI

4
7
2
2
19
4
14
13
17
19
12
18
13
18
12
12
19
14
11
5
7
20
4
111
144
11

Highest AQI recorded in

December

70AQI

Lowest AQI recorded in

July

45AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
63AQI
Least Polluted Year Recorded
2023(Avg.)
54AQI

Seo Myeon's annual 2025 AQI (59) shows an average percentage change of 2.8% (worsened AQI) compared to previous years: 2020 (57), 2021 (63), 2022 (60), 2023 (54), 2024 (55).