Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

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

Chonan, Chungnam, South Korea

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
12th Aug 2021
94AQI
Lowest AQI recorded on
31st Aug 2022
28AQI

Same 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

Globe

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025

Chonan, Chungnam, South Korea

AQI
Day
Night
.

5 AM2nd Aug 2025

7 PM

4 AM3rd Aug 2025

Day time
Avg. Highest Time
12PM2nd Aug

81AQI

Avg. Lowest Time
6AM2nd Aug

55AQI

Night time
Avg. Highest Time
11PM2nd Aug

61AQI

Avg. Lowest Time
3AM3rd Aug

55AQI

In the last 24 hours,

Chonan's AQI reached its highest point of 81 at 12 PM during the Day, while the lowest point, 55, was recorded at 3 AM during the Night between 2nd Aug and 3rd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Chonan, Chungnam, 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 2025525 AMAQI
4th Jul 2025526 AMAQI
4th Jul 2025527 AMAQI
4th Jul 2025528 AMAQI
4th Jul 2025539 AMAQI
4th Jul 20255410 AMAQI
4th Jul 20255511 AMAQI
4th Jul 20255312 PMAQI
4th Jul 2025511 PMAQI
4th Jul 2025522 PMAQI
4th Jul 2025523 PMAQI
4th Jul 2025474 PMAQI
4th Jul 2025475 PMAQI
4th Jul 2025466 PMAQI
4th Jul 2025437 PMAQI
4th Jul 2025438 PMAQI
4th Jul 2025489 PMAQI
4th Jul 20254910 PMAQI
4th Jul 20254911 PMAQI
5th Jul 20255012 AMAQI
5th Jul 2025501 AMAQI
5th Jul 2025502 AMAQI
5th Jul 2025503 AMAQI
5th Jul 2025504 AMAQI

25°C21/31°C

5th Jul 2025525 AMAQI
5th Jul 2025516 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025528 AMAQI
5th Jul 2025459 AMAQI
5th Jul 20254110 AMAQI
5th Jul 20253711 AMAQI
5th Jul 20253612 PMAQI
5th Jul 2025431 PMAQI
5th Jul 2025442 PMAQI
5th Jul 2025463 PMAQI
5th Jul 2025454 PMAQI
5th Jul 2025465 PMAQI
5th Jul 2025476 PMAQI
5th Jul 2025477 PMAQI
5th Jul 2025458 PMAQI
5th Jul 2025519 PMAQI
5th Jul 20255110 PMAQI
5th Jul 20255111 PMAQI
6th Jul 20255112 AMAQI
6th Jul 2025511 AMAQI
6th Jul 2025512 AMAQI
6th Jul 2025513 AMAQI
6th Jul 2025504 AMAQI

26°C21/33°C

6th Jul 2025515 AMAQI
6th Jul 2025506 AMAQI
6th Jul 2025517 AMAQI
6th Jul 2025518 AMAQI
6th Jul 2025499 AMAQI
6th Jul 20254710 AMAQI
6th Jul 20255011 AMAQI
6th Jul 20255512 PMAQI
6th Jul 2025531 PMAQI
6th Jul 2025522 PMAQI
6th Jul 2025513 PMAQI
6th Jul 2025514 PMAQI
6th Jul 2025515 PMAQI
6th Jul 2025536 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025528 PMAQI
6th Jul 2025529 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255211 PMAQI
7th Jul 20255212 AMAQI
7th Jul 2025511 AMAQI
7th Jul 2025512 AMAQI
7th Jul 2025513 AMAQI
7th Jul 2025524 AMAQI

27°C21/34°C

7th Jul 2025525 AMAQI
7th Jul 2025526 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025528 AMAQI
7th Jul 2025519 AMAQI
7th Jul 20255610 AMAQI
7th Jul 20255611 AMAQI
7th Jul 20255812 PMAQI
7th Jul 2025601 PMAQI
7th Jul 2025612 PMAQI
7th Jul 2025663 PMAQI
7th Jul 2025704 PMAQI
7th Jul 2025715 PMAQI
7th Jul 2025726 PMAQI
7th Jul 2025737 PMAQI
7th Jul 2025728 PMAQI
7th Jul 2025589 PMAQI
7th Jul 20255710 PMAQI
7th Jul 20255711 PMAQI
8th Jul 20255712 AMAQI
8th Jul 2025571 AMAQI
8th Jul 2025552 AMAQI
8th Jul 2025523 AMAQI
8th Jul 2025524 AMAQI

28°C23/34°C

8th Jul 2025535 AMAQI
8th Jul 2025536 AMAQI
8th Jul 2025537 AMAQI
8th Jul 2025538 AMAQI
8th Jul 2025719 AMAQI
8th Jul 20258210 AMAQI
8th Jul 20257911 AMAQI
8th Jul 20257512 PMAQI
8th Jul 2025671 PMAQI
8th Jul 2025672 PMAQI
8th Jul 2025663 PMAQI
8th Jul 2025674 PMAQI
8th Jul 2025665 PMAQI
8th Jul 2025686 PMAQI
8th Jul 2025687 PMAQI
8th Jul 2025668 PMAQI
8th Jul 2025589 PMAQI
8th Jul 20255610 PMAQI
8th Jul 20255611 PMAQI
9th Jul 20255512 AMAQI
9th Jul 2025551 AMAQI
9th Jul 2025542 AMAQI
9th Jul 2025543 AMAQI
9th Jul 2025554 AMAQI

29°C23/36°C

9th Jul 2025565 AMAQI
9th Jul 2025566 AMAQI
9th Jul 2025567 AMAQI
9th Jul 2025568 AMAQI
9th Jul 2025519 AMAQI
9th Jul 20254910 AMAQI
9th Jul 20255011 AMAQI
9th Jul 20254812 PMAQI
9th Jul 2025531 PMAQI
9th Jul 2025502 PMAQI
9th Jul 2025513 PMAQI
9th Jul 2025514 PMAQI
9th Jul 2025485 PMAQI
9th Jul 2025496 PMAQI
9th Jul 2025507 PMAQI
9th Jul 2025508 PMAQI
9th Jul 2025549 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255512 AMAQI
10th Jul 2025551 AMAQI
10th Jul 2025552 AMAQI
10th Jul 2025553 AMAQI
10th Jul 2025554 AMAQI

29°C24/35°C

10th Jul 2025555 AMAQI
10th Jul 2025556 AMAQI
10th Jul 2025557 AMAQI
10th Jul 2025558 AMAQI
10th Jul 2025399 AMAQI
10th Jul 20253510 AMAQI
10th Jul 20253611 AMAQI
10th Jul 20254112 PMAQI
10th Jul 2025481 PMAQI
10th Jul 2025492 PMAQI
10th Jul 2025503 PMAQI
10th Jul 2025494 PMAQI
10th Jul 2025505 PMAQI
10th Jul 2025506 PMAQI
10th Jul 2025467 PMAQI
10th Jul 2025488 PMAQI
10th Jul 2025569 PMAQI
10th Jul 20255810 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20255612 AMAQI
11th Jul 2025581 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025583 AMAQI
11th Jul 2025584 AMAQI

27°C22/34°C

11th Jul 2025585 AMAQI
11th Jul 2025586 AMAQI
11th Jul 2025557 AMAQI
11th Jul 2025558 AMAQI
11th Jul 2025459 AMAQI
11th Jul 20254110 AMAQI
11th Jul 20254411 AMAQI
11th Jul 20254512 PMAQI
11th Jul 2025501 PMAQI
11th Jul 2025452 PMAQI
11th Jul 2025503 PMAQI
11th Jul 2025524 PMAQI
11th Jul 2025515 PMAQI
11th Jul 2025516 PMAQI
11th Jul 2025517 PMAQI
11th Jul 2025528 PMAQI
11th Jul 2025559 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 2025574 AMAQI

26°C20/33°C

12th Jul 2025565 AMAQI
12th Jul 2025566 AMAQI
12th Jul 2025567 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025459 AMAQI
12th Jul 20254110 AMAQI
12th Jul 20254211 AMAQI
12th Jul 20254412 PMAQI
12th Jul 2025501 PMAQI
12th Jul 2025522 PMAQI
12th Jul 2025513 PMAQI
12th Jul 2025524 PMAQI
12th Jul 2025545 PMAQI
12th Jul 2025516 PMAQI
12th Jul 2025507 PMAQI
12th Jul 2025508 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255511 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025553 AMAQI
13th Jul 2025554 AMAQI

26°C19/33°C

13th Jul 2025555 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025629 AMAQI
13th Jul 20257010 AMAQI
13th Jul 20257111 AMAQI
13th Jul 20257112 PMAQI
13th Jul 2025661 PMAQI
13th Jul 2025672 PMAQI
13th Jul 2025703 PMAQI
13th Jul 2025724 PMAQI
13th Jul 2025715 PMAQI
13th Jul 2025716 PMAQI
13th Jul 2025707 PMAQI
13th Jul 2025688 PMAQI
13th Jul 2025599 PMAQI
13th Jul 20255910 PMAQI
13th Jul 20255811 PMAQI
14th Jul 20255712 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025553 AMAQI
14th Jul 2025564 AMAQI

24°C19/28°C

14th Jul 2025575 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025649 AMAQI
14th Jul 20256610 AMAQI
14th Jul 20257111 AMAQI
14th Jul 20257712 PMAQI
14th Jul 2025751 PMAQI
14th Jul 2025782 PMAQI
14th Jul 2025743 PMAQI
14th Jul 2025684 PMAQI
14th Jul 2025615 PMAQI
14th Jul 2025566 PMAQI
14th Jul 2025507 PMAQI
14th Jul 2025458 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255410 PMAQI
14th Jul 20255311 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025561 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
15th Jul 2025574 AMAQI

23°C20/28°C

15th Jul 2025585 AMAQI
15th Jul 2025586 AMAQI
15th Jul 2025587 AMAQI
15th Jul 2025588 AMAQI
15th Jul 2025319 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20252011 AMAQI
15th Jul 20252212 PMAQI
15th Jul 2025361 PMAQI
15th Jul 2025342 PMAQI
15th Jul 2025373 PMAQI
15th Jul 2025384 PMAQI
15th Jul 2025435 PMAQI
15th Jul 2025436 PMAQI
15th Jul 2025447 PMAQI
15th Jul 2025468 PMAQI
15th Jul 2025539 PMAQI
15th Jul 20255310 PMAQI
15th Jul 20255411 PMAQI
16th Jul 20255412 AMAQI
16th Jul 2025551 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025554 AMAQI

21°C19/25°C

16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025599 AMAQI
16th Jul 20256010 AMAQI
16th Jul 20255911 AMAQI
16th Jul 20255812 PMAQI
16th Jul 2025551 PMAQI
16th Jul 2025542 PMAQI
16th Jul 2025533 PMAQI
16th Jul 2025494 PMAQI
16th Jul 2025505 PMAQI
16th Jul 2025466 PMAQI
16th Jul 2025407 PMAQI
16th Jul 2025428 PMAQI
16th Jul 2025539 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255311 PMAQI
17th Jul 20255312 AMAQI
17th Jul 2025541 AMAQI
17th Jul 2025542 AMAQI
17th Jul 2025543 AMAQI
17th Jul 2025544 AMAQI

21°C19/25°C

17th Jul 2025555 AMAQI
17th Jul 2025556 AMAQI
17th Jul 2025557 AMAQI
17th Jul 2025558 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20251911 AMAQI
17th Jul 20252012 PMAQI
17th Jul 2025271 PMAQI
17th Jul 2025242 PMAQI
17th Jul 2025243 PMAQI
17th Jul 2025244 PMAQI
17th Jul 2025265 PMAQI
17th Jul 2025246 PMAQI
17th Jul 2025247 PMAQI
17th Jul 2025318 PMAQI
17th Jul 2025449 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254411 PMAQI
18th Jul 20254512 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025542 AMAQI
18th Jul 2025543 AMAQI
18th Jul 2025534 AMAQI

23°C20/26°C

18th Jul 2025525 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025528 AMAQI
18th Jul 2025319 AMAQI
18th Jul 20252510 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20253012 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025342 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025384 PMAQI
18th Jul 2025395 PMAQI
18th Jul 2025416 PMAQI
18th Jul 2025447 PMAQI
18th Jul 2025458 PMAQI
18th Jul 2025489 PMAQI
18th Jul 20254810 PMAQI
18th Jul 20254911 PMAQI
19th Jul 20254912 AMAQI
19th Jul 2025511 AMAQI
19th Jul 2025512 AMAQI
19th Jul 2025513 AMAQI
19th Jul 2025514 AMAQI

23°C21/27°C

19th Jul 2025495 AMAQI
19th Jul 2025496 AMAQI
19th Jul 2025487 AMAQI
19th Jul 2025498 AMAQI
19th Jul 2025239 AMAQI
19th Jul 20251410 AMAQI
19th Jul 20251411 AMAQI
19th Jul 20251512 PMAQI
19th Jul 2025191 PMAQI
19th Jul 2025192 PMAQI
19th Jul 2025203 PMAQI
19th Jul 2025204 PMAQI
19th Jul 2025195 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025268 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025441 AMAQI
20th Jul 2025502 AMAQI
20th Jul 2025503 AMAQI
20th Jul 2025484 AMAQI

25°C21/28°C

20th Jul 2025445 AMAQI
20th Jul 2025456 AMAQI
20th Jul 2025457 AMAQI
20th Jul 2025458 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20253512 PMAQI
20th Jul 2025361 PMAQI
20th Jul 2025372 PMAQI
20th Jul 2025373 PMAQI
20th Jul 2025374 PMAQI
20th Jul 2025465 PMAQI
20th Jul 2025486 PMAQI
20th Jul 2025507 PMAQI
20th Jul 2025488 PMAQI
20th Jul 2025469 PMAQI
20th Jul 20254710 PMAQI
20th Jul 20254811 PMAQI
21st Jul 20255012 AMAQI
21st Jul 2025451 AMAQI
21st Jul 2025462 AMAQI
21st Jul 2025453 AMAQI
21st Jul 2025444 AMAQI

26°C22/32°C

21st Jul 2025435 AMAQI
21st Jul 2025436 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025428 AMAQI
21st Jul 2025499 AMAQI
21st Jul 20255410 AMAQI
21st Jul 20254911 AMAQI
21st Jul 20254912 PMAQI
21st Jul 2025441 PMAQI
21st Jul 2025382 PMAQI
21st Jul 2025343 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025295 PMAQI
21st Jul 2025296 PMAQI
21st Jul 2025327 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025369 PMAQI
21st Jul 20253510 PMAQI
21st Jul 20253511 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025441 AMAQI
22nd Jul 2025452 AMAQI
22nd Jul 2025453 AMAQI
22nd Jul 2025454 AMAQI

27°C23/31°C

22nd Jul 2025465 AMAQI
22nd Jul 2025466 AMAQI
22nd Jul 2025457 AMAQI
22nd Jul 2025458 AMAQI
22nd Jul 2025319 AMAQI
22nd Jul 20252910 AMAQI
22nd Jul 20253411 AMAQI
22nd Jul 20253312 PMAQI
22nd Jul 2025351 PMAQI
22nd Jul 2025372 PMAQI
22nd Jul 2025333 PMAQI
22nd Jul 2025334 PMAQI
22nd Jul 2025375 PMAQI
22nd Jul 2025376 PMAQI
22nd Jul 2025367 PMAQI
22nd Jul 2025378 PMAQI
22nd Jul 2025419 PMAQI
22nd Jul 20254010 PMAQI
22nd Jul 20254011 PMAQI
23rd Jul 20254112 AMAQI
23rd Jul 2025411 AMAQI
23rd Jul 2025422 AMAQI
23rd Jul 2025443 AMAQI
23rd Jul 2025434 AMAQI

26°C23/30°C

23rd Jul 2025425 AMAQI
23rd Jul 2025426 AMAQI
23rd Jul 2025427 AMAQI
23rd Jul 2025428 AMAQI
23rd Jul 2025469 AMAQI
23rd Jul 20254710 AMAQI
23rd Jul 20255311 AMAQI
23rd Jul 20255512 PMAQI
23rd Jul 2025541 PMAQI
23rd Jul 2025542 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025554 PMAQI
23rd Jul 2025555 PMAQI
23rd Jul 2025566 PMAQI
23rd Jul 2025567 PMAQI
23rd Jul 2025528 PMAQI
23rd Jul 2025519 PMAQI
23rd Jul 20255010 PMAQI
23rd Jul 20255011 PMAQI
24th Jul 20255012 AMAQI
24th Jul 2025431 AMAQI
24th Jul 2025432 AMAQI
24th Jul 2025433 AMAQI
24th Jul 2025444 AMAQI

26°C23/31°C

24th Jul 2025455 AMAQI
24th Jul 2025456 AMAQI
24th Jul 2025457 AMAQI
24th Jul 2025448 AMAQI
24th Jul 2025519 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255711 AMAQI
24th Jul 20256112 PMAQI
24th Jul 2025601 PMAQI
24th Jul 2025632 PMAQI
24th Jul 2025633 PMAQI
24th Jul 2025634 PMAQI
24th Jul 2025655 PMAQI
24th Jul 2025656 PMAQI
24th Jul 2025657 PMAQI
24th Jul 2025638 PMAQI
24th Jul 2025569 PMAQI
24th Jul 20255910 PMAQI
24th Jul 20255911 PMAQI
25th Jul 20255912 AMAQI
25th Jul 2025601 AMAQI
25th Jul 2025532 AMAQI
25th Jul 2025463 AMAQI
25th Jul 2025484 AMAQI

27°C23/33°C

25th Jul 2025515 AMAQI
25th Jul 2025516 AMAQI
25th Jul 2025517 AMAQI
25th Jul 2025518 AMAQI
25th Jul 2025699 AMAQI
25th Jul 20257710 AMAQI
25th Jul 20257311 AMAQI
25th Jul 20256712 PMAQI
25th Jul 2025591 PMAQI
25th Jul 2025562 PMAQI
25th Jul 2025573 PMAQI
25th Jul 2025544 PMAQI
25th Jul 2025555 PMAQI
25th Jul 2025536 PMAQI
25th Jul 2025547 PMAQI
25th Jul 2025608 PMAQI
25th Jul 2025589 PMAQI
25th Jul 20255910 PMAQI
25th Jul 20256011 PMAQI
26th Jul 20256012 AMAQI
26th Jul 2025531 AMAQI
26th Jul 2025532 AMAQI
26th Jul 2025533 AMAQI
26th Jul 2025534 AMAQI

28°C23/35°C

26th Jul 2025555 AMAQI
26th Jul 2025556 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025558 AMAQI
26th Jul 2025529 AMAQI
26th Jul 20253910 AMAQI
26th Jul 20253511 AMAQI
26th Jul 20253312 PMAQI
26th Jul 2025371 PMAQI
26th Jul 2025382 PMAQI
26th Jul 2025373 PMAQI
26th Jul 2025354 PMAQI
26th Jul 2025335 PMAQI
26th Jul 2025316 PMAQI
26th Jul 2025357 PMAQI
26th Jul 2025428 PMAQI
26th Jul 2025529 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20255311 PMAQI
27th Jul 20255312 AMAQI
27th Jul 2025541 AMAQI
27th Jul 2025542 AMAQI
27th Jul 2025543 AMAQI
27th Jul 2025544 AMAQI

29°C24/35°C

27th Jul 2025535 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025537 AMAQI
27th Jul 2025538 AMAQI
27th Jul 2025439 AMAQI
27th Jul 20253110 AMAQI
27th Jul 20252311 AMAQI
27th Jul 20252112 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025252 PMAQI
27th Jul 2025243 PMAQI
27th Jul 2025254 PMAQI
27th Jul 2025285 PMAQI
27th Jul 2025296 PMAQI
27th Jul 2025347 PMAQI
27th Jul 2025408 PMAQI
27th Jul 2025529 PMAQI
27th Jul 20255510 PMAQI
27th Jul 20255611 PMAQI
28th Jul 20255712 AMAQI
28th Jul 2025541 AMAQI
28th Jul 2025542 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025534 AMAQI

29°C24/35°C

28th Jul 2025515 AMAQI
28th Jul 2025506 AMAQI
28th Jul 2025517 AMAQI
28th Jul 2025518 AMAQI
28th Jul 2025639 AMAQI
28th Jul 20256810 AMAQI
28th Jul 20256911 AMAQI
28th Jul 20256912 PMAQI
28th Jul 2025671 PMAQI
28th Jul 2025662 PMAQI
28th Jul 2025633 PMAQI
28th Jul 2025604 PMAQI
28th Jul 2025645 PMAQI
28th Jul 2025666 PMAQI
28th Jul 2025657 PMAQI
28th Jul 2025598 PMAQI
28th Jul 2025559 PMAQI
28th Jul 20255810 PMAQI
28th Jul 20255911 PMAQI
29th Jul 20255912 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025532 AMAQI
29th Jul 2025533 AMAQI
29th Jul 2025544 AMAQI

28°C24/33°C

29th Jul 2025565 AMAQI
29th Jul 2025566 AMAQI
29th Jul 2025567 AMAQI
29th Jul 2025568 AMAQI
29th Jul 2025699 AMAQI
29th Jul 20257610 AMAQI
29th Jul 20257711 AMAQI
29th Jul 20257812 PMAQI
29th Jul 2025741 PMAQI
29th Jul 2025732 PMAQI
29th Jul 2025673 PMAQI
29th Jul 2025564 PMAQI
29th Jul 2025565 PMAQI
29th Jul 2025606 PMAQI
29th Jul 2025737 PMAQI
29th Jul 2025728 PMAQI
29th Jul 2025639 PMAQI
29th Jul 20256310 PMAQI
29th Jul 20256311 PMAQI
30th Jul 20256212 AMAQI
30th Jul 2025561 AMAQI
30th Jul 2025552 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025574 AMAQI

28°C23/35°C

30th Jul 2025595 AMAQI
30th Jul 2025586 AMAQI
30th Jul 2025587 AMAQI
30th Jul 2025588 AMAQI
30th Jul 2025719 AMAQI
30th Jul 20257610 AMAQI
30th Jul 20257611 AMAQI
30th Jul 20257512 PMAQI
30th Jul 2025681 PMAQI
30th Jul 2025632 PMAQI
30th Jul 2025543 PMAQI
30th Jul 2025504 PMAQI
30th Jul 2025445 PMAQI
30th Jul 2025436 PMAQI
30th Jul 2025427 PMAQI
30th Jul 2025478 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255510 PMAQI
30th Jul 20255611 PMAQI
31st Jul 20255712 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025582 AMAQI
31st Jul 2025583 AMAQI
31st Jul 2025584 AMAQI

28°C23/34°C

31st Jul 2025585 AMAQI
31st Jul 2025586 AMAQI
31st Jul 2025587 AMAQI
31st Jul 2025588 AMAQI
31st Jul 2025589 AMAQI
31st Jul 20255810 AMAQI
31st Jul 20255411 AMAQI
31st Jul 20255212 PMAQI
31st Jul 2025541 PMAQI
31st Jul 2025552 PMAQI
31st Jul 2025603 PMAQI
31st Jul 2025604 PMAQI
31st Jul 2025595 PMAQI
31st Jul 2025556 PMAQI
31st Jul 2025547 PMAQI
31st Jul 2025558 PMAQI
31st Jul 2025549 PMAQI
31st Jul 20255410 PMAQI
31st Jul 20255411 PMAQI
1st Aug 20255512 AMAQI
1st Aug 2025541 AMAQI
1st Aug 2025542 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025554 AMAQI

27°C24/33°C

1st Aug 2025555 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025558 AMAQI
1st Aug 2025549 AMAQI
1st Aug 20255910 AMAQI
1st Aug 20255611 AMAQI
1st Aug 20255612 PMAQI
1st Aug 2025561 PMAQI
1st Aug 2025592 PMAQI
1st Aug 2025613 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025615 PMAQI
1st Aug 2025616 PMAQI
1st Aug 2025597 PMAQI
1st Aug 2025578 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256010 PMAQI
1st Aug 20255811 PMAQI
2nd Aug 20255912 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 2025769 AMAQI
2nd Aug 20257910 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20258112 PMAQI
2nd Aug 2025781 PMAQI
2nd Aug 2025622 PMAQI
2nd Aug 2025603 PMAQI
2nd Aug 2025634 PMAQI
2nd Aug 2025615 PMAQI
2nd Aug 2025676 PMAQI
2nd Aug 2025637 PMAQI
2nd Aug 2025598 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256111 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
5 AM
3rd Aug 2025576 AMAQI
3rd Aug 2025587 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025659 AMAQI
3rd Aug 20256810 AMAQI
3rd Aug 20256811 AMAQI
3rd Aug 20256712 PMAQI
12 PM
3rd Aug 2025681 PMAQI
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 7 PM

51AQI

15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM

51AQI

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. 51), while the lowest AQI was between 5 AM to 7 PM (Avg. 51).
Night time
Avg. Highest Time
12 AM - 11 PM

52AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 8 PM

52AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 52), while the lowest AQI was between 12 AM to 8 PM (Avg. 52).

2025 Days Vs Air Quality

Chonan, Chungnam, South Korea

2025

18%

38

76%

162

6%

13

Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)

Good
38 Days
Moderate
162 Days
Poor
13 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 18%

Health Risk Level:

Extreme

In 2025, 18% of 215 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

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
73AQI
2nd January 2025
67AQI
3rd January 2025
61AQI
4th January 2025
62AQI
5th January 2025
66AQI
6th January 2025
89AQI
7th January 2025
59AQI
8th January 2025
68AQI
9th January 2025
41AQI
10th January 2025
62AQI
11th January 2025
64AQI
12th January 2025
85AQI
13th January 2025
89AQI
14th January 2025
95AQI
15th January 2025
58AQI
16th January 2025
71AQI
17th January 2025
86AQI
18th January 2025
82AQI
19th January 2025
87AQI
20th January 2025
121AQI
21st January 2025
137AQI
22nd January 2025
141AQI
23rd January 2025
123AQI
24th January 2025
124AQI
25th January 2025
87AQI
26th January 2025
62AQI
27th January 2025
66AQI
28th January 2025
53AQI
29th January 2025
58AQI
30th January 2025
57AQI
31st January 2025
81AQI
1st February 2025
88AQI
2nd February 2025
97AQI
3rd February 2025
58AQI
4th February 2025
53AQI
5th February 2025
48AQI
6th February 2025
53AQI
7th February 2025
47AQI
8th February 2025
46AQI
9th February 2025
55AQI
10th February 2025
59AQI
11th February 2025
81AQI
12th February 2025
74AQI
13th February 2025
54AQI
14th February 2025
83AQI
15th February 2025
59AQI
16th February 2025
109AQI
17th February 2025
53AQI
18th February 2025
62AQI
19th February 2025
49AQI
20th February 2025
56AQI
21st February 2025
55AQI
22nd February 2025
59AQI
23rd February 2025
55AQI
24th February 2025
57AQI
25th February 2025
55AQI
26th February 2025
76AQI
27th February 2025
61AQI
28th February 2025
82AQI
1st March 2025
99AQI
2nd March 2025
79AQI
3rd March 2025
56AQI
4th March 2025
46AQI
5th March 2025
43AQI
6th March 2025
76AQI
7th March 2025
90AQI
8th March 2025
87AQI
9th March 2025
105AQI
10th March 2025
109AQI
11th March 2025
106AQI
12th March 2025
94AQI
13th March 2025
96AQI
14th March 2025
84AQI
15th March 2025
58AQI
16th March 2025
75AQI
17th March 2025
64AQI
18th March 2025
77AQI
19th March 2025
81AQI
20th March 2025
89AQI
21st March 2025
92AQI
22nd March 2025
102AQI
23rd March 2025
109AQI
24th March 2025
105AQI
25th March 2025
125AQI
26th March 2025
89AQI
27th March 2025
92AQI
28th March 2025
63AQI
29th March 2025
52AQI
30th March 2025
51AQI
31st March 2025
60AQI
1st April 2025
76AQI
2nd April 2025
79AQI
3rd April 2025
83AQI
4th April 2025
85AQI
5th April 2025
73AQI
6th April 2025
68AQI
7th April 2025
69AQI
8th April 2025
74AQI
9th April 2025
66AQI
10th April 2025
74AQI
11th April 2025
83AQI
12th April 2025
62AQI
13th April 2025
63AQI
14th April 2025
45AQI
15th April 2025
57AQI
16th April 2025
59AQI
17th April 2025
66AQI
18th April 2025
80AQI
19th April 2025
52AQI
20th April 2025
68AQI
21st April 2025
55AQI
22nd April 2025
49AQI
23rd April 2025
43AQI
24th April 2025
62AQI
25th April 2025
61AQI
26th April 2025
53AQI
27th April 2025
41AQI
28th April 2025
61AQI
29th April 2025
66AQI
30th April 2025
59AQI
1st May 2025
57AQI
2nd May 2025
52AQI
3rd May 2025
52AQI
4th May 2025
47AQI
5th May 2025
49AQI
6th May 2025
48AQI
7th May 2025
52AQI
8th May 2025
67AQI
9th May 2025
50AQI
10th May 2025
55AQI
11th May 2025
67AQI
12th May 2025
69AQI
13th May 2025
72AQI
14th May 2025
73AQI
15th May 2025
59AQI
16th May 2025
49AQI
17th May 2025
40AQI
18th May 2025
59AQI
19th May 2025
60AQI
20th May 2025
45AQI
21st May 2025
50AQI
22nd May 2025
55AQI
23rd May 2025
61AQI
24th May 2025
50AQI
25th May 2025
50AQI
26th May 2025
62AQI
27th May 2025
75AQI
28th May 2025
76AQI
29th May 2025
80AQI
30th May 2025
78AQI
31st May 2025
84AQI
1st June 2025
92AQI
2nd June 2025
100AQI
3rd June 2025
74AQI
4th June 2025
62AQI
5th June 2025
56AQI
6th June 2025
61AQI
7th June 2025
68AQI
8th June 2025
63AQI
9th June 2025
63AQI
10th June 2025
58AQI
11th June 2025
53AQI
12th June 2025
58AQI
13th June 2025
69AQI
14th June 2025
53AQI
15th June 2025
58AQI
16th June 2025
61AQI
17th June 2025
62AQI
18th June 2025
65AQI
19th June 2025
65AQI
20th June 2025
53AQI
21st June 2025
52AQI
22nd June 2025
50AQI
23rd June 2025
56AQI
24th June 2025
55AQI
25th June 2025
47AQI
26th June 2025
52AQI
27th June 2025
60AQI
28th June 2025
59AQI
29th June 2025
51AQI
30th June 2025
49AQI
1st July 2025
47AQI
2nd July 2025
45AQI
3rd July 2025
51AQI
4th July 2025
49AQI
5th July 2025
48AQI
6th July 2025
51AQI
7th July 2025
58AQI
8th July 2025
61AQI
9th July 2025
53AQI
10th July 2025
51AQI
11th July 2025
53AQI
12th July 2025
53AQI
13th July 2025
61AQI
14th July 2025
59AQI
15th July 2025
47AQI
16th July 2025
53AQI
17th July 2025
41AQI
18th July 2025
44AQI
19th July 2025
35AQI
20th July 2025
43AQI
21st July 2025
41AQI
22nd July 2025
39AQI
23rd July 2025
48AQI
24th July 2025
54AQI
25th July 2025
57AQI
26th July 2025
47AQI
27th July 2025
43AQI
28th July 2025
59AQI
29th July 2025
63AQI
30th July 2025
57AQI
31st July 2025
57AQI
1st August 2025
57AQI

80AQI

64AQI

82AQI

64AQI

59AQI

61AQI

51AQI

57AQI

No. of days

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

202566AQI

1
25
5
4
23
1
2
22
7
4
26
10
21
3
27
14
17
1
38
162
13

Highest AQI recorded in

March

82AQI

Lowest AQI recorded in

July

51AQI

202464AQI

7
15
9
8
13
7
1
5
21
4
1
2
23
5
6
23
2
3
27
23
8
9
22
20
10
15
16
9
20
1
4
27
111
225
28
2

Highest AQI recorded in

January

83AQI

Lowest AQI recorded in

July

42AQI

202372AQI

4
18
7
2
1
14
9
4
1
20
9
1
2
22
5
1
6
23
2
3
27
13
16
2
11
20
13
17
10
21
10
17
2
9
14
7
1
83
229
43
8
1

Highest AQI recorded in

February

102AQI

Lowest AQI recorded in

September

53AQI

202274AQI

19
9
3
13
6
3
4
16
11
4
21
5
6
24
1
15
15
8
16
1
17
10
2
10
17
4
3
19
7
1
4
24
3
72
194
48
7

Highest AQI recorded in

February

95AQI

Lowest AQI recorded in

August

28AQI

202175AQI

2
20
9
1
15
9
3
2
15
10
3
1
2
25
3
7
20
2
1
1
3
24
3
13
18
16
15
23
7
6
22
3
5
17
6
2
6
15
10
86
213
55
8
2
1

Highest AQI recorded in

March

108AQI

Lowest AQI recorded in

September

43AQI

202068AQI

2
10
1
3
17
1
3
14
1
3
25
2
17
14
18
13
15
15
5
20
6
3
18
8
1
1
19
10
1
70
165
29
2

Highest AQI recorded in

December

90AQI

Lowest AQI recorded in

July

50AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
75AQI
Least Polluted Year Recorded
2024(Avg.)
64AQI

Chonan's annual 2025 AQI (66) shows an average percentage change of -6.3% (improved AQI) compared to previous years: 2020 (68), 2021 (75), 2022 (74), 2023 (72), 2024 (64).