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
94AQILowest AQI recorded on
31st Aug 2022
28AQISame Day Analysis (20th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 46 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 21st Aug - 22nd Aug 2025
Chonan, Chungnam, South Korea
AQI
Day
Night
.
5 AM21st Aug 2025
7 PM
4 AM22nd Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
10AM21st Aug
52AQI
Avg. Lowest Time
6PM21st Aug
41AQI
In the last 24 hours,
Chonan's AQI reached its highest point of 52 at 10 AM during the Night, while the lowest point, 41, was recorded at 6 PM during the Night between 21st Aug and 22nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chonan, Chungnam, South Korea
JulAug
23rd - 24th24th - 25th25th - 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
Day
Night
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
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
3rd Aug 2025691 PMAQI
3rd Aug 2025712 PMAQI
3rd Aug 2025733 PMAQI
3rd Aug 2025684 PMAQI
3rd Aug 2025675 PMAQI
3rd Aug 2025666 PMAQI
3rd Aug 2025647 PMAQI
3rd Aug 2025598 PMAQI
3rd Aug 2025589 PMAQI
3rd Aug 20255710 PMAQI
3rd Aug 20255111 PMAQI
4th Aug 20255212 AMAQI
4th Aug 2025551 AMAQI
4th Aug 2025562 AMAQI
4th Aug 2025573 AMAQI
4th Aug 2025584 AMAQI
26°C23/28°C
4th Aug 2025595 AMAQI
4th Aug 2025596 AMAQI
4th Aug 2025597 AMAQI
4th Aug 2025598 AMAQI
4th Aug 2025389 AMAQI
4th Aug 20254010 AMAQI
4th Aug 20254511 AMAQI
4th Aug 20254412 PMAQI
4th Aug 2025451 PMAQI
4th Aug 2025422 PMAQI
4th Aug 2025403 PMAQI
4th Aug 2025454 PMAQI
4th Aug 2025485 PMAQI
4th Aug 2025496 PMAQI
4th Aug 2025527 PMAQI
4th Aug 2025548 PMAQI
4th Aug 2025569 PMAQI
4th Aug 20255610 PMAQI
4th Aug 20255611 PMAQI
5th Aug 20255412 AMAQI
5th Aug 2025551 AMAQI
5th Aug 2025562 AMAQI
5th Aug 2025563 AMAQI
5th Aug 2025554 AMAQI
26°C23/30°C
5th Aug 2025555 AMAQI
5th Aug 2025556 AMAQI
5th Aug 2025557 AMAQI
5th Aug 2025558 AMAQI
5th Aug 2025519 AMAQI
5th Aug 20255510 AMAQI
5th Aug 20255611 AMAQI
5th Aug 20255712 PMAQI
5th Aug 2025531 PMAQI
5th Aug 2025532 PMAQI
5th Aug 2025493 PMAQI
5th Aug 2025414 PMAQI
5th Aug 2025435 PMAQI
5th Aug 2025436 PMAQI
5th Aug 2025407 PMAQI
5th Aug 2025478 PMAQI
5th Aug 2025499 PMAQI
5th Aug 20254910 PMAQI
5th Aug 20254711 PMAQI
6th Aug 20255012 AMAQI
6th Aug 2025551 AMAQI
6th Aug 2025542 AMAQI
6th Aug 2025553 AMAQI
6th Aug 2025554 AMAQI
26°C22/32°C
6th Aug 2025555 AMAQI
6th Aug 2025556 AMAQI
6th Aug 2025557 AMAQI
6th Aug 2025558 AMAQI
6th Aug 2025319 AMAQI
6th Aug 20253410 AMAQI
6th Aug 20254011 AMAQI
6th Aug 20253712 PMAQI
6th Aug 2025391 PMAQI
6th Aug 2025422 PMAQI
6th Aug 2025423 PMAQI
6th Aug 2025364 PMAQI
6th Aug 2025435 PMAQI
6th Aug 2025416 PMAQI
6th Aug 2025467 PMAQI
6th Aug 2025518 PMAQI
6th Aug 2025509 PMAQI
6th Aug 20254810 PMAQI
6th Aug 20255011 PMAQI
7th Aug 20254812 AMAQI
7th Aug 2025541 AMAQI
7th Aug 2025532 AMAQI
7th Aug 2025533 AMAQI
7th Aug 2025534 AMAQI
26°C23/29°C
7th Aug 2025525 AMAQI
7th Aug 2025526 AMAQI
7th Aug 2025517 AMAQI
7th Aug 2025538 AMAQI
7th Aug 2025399 AMAQI
7th Aug 20254510 AMAQI
7th Aug 20255211 AMAQI
7th Aug 20254912 PMAQI
7th Aug 2025501 PMAQI
7th Aug 2025542 PMAQI
7th Aug 2025453 PMAQI
7th Aug 2025424 PMAQI
7th Aug 2025415 PMAQI
7th Aug 2025426 PMAQI
7th Aug 2025427 PMAQI
7th Aug 2025428 PMAQI
7th Aug 2025489 PMAQI
7th Aug 20254710 PMAQI
7th Aug 20254611 PMAQI
8th Aug 20254912 AMAQI
8th Aug 2025521 AMAQI
8th Aug 2025522 AMAQI
8th Aug 2025523 AMAQI
8th Aug 2025524 AMAQI
25°C21/29°C
8th Aug 2025525 AMAQI
8th Aug 2025526 AMAQI
8th Aug 2025527 AMAQI
8th Aug 2025528 AMAQI
8th Aug 2025469 AMAQI
8th Aug 20254810 AMAQI
8th Aug 20255311 AMAQI
8th Aug 20256012 PMAQI
8th Aug 2025581 PMAQI
8th Aug 2025602 PMAQI
8th Aug 2025593 PMAQI
8th Aug 2025574 PMAQI
8th Aug 2025585 PMAQI
8th Aug 2025596 PMAQI
8th Aug 2025617 PMAQI
8th Aug 2025618 PMAQI
8th Aug 2025569 PMAQI
8th Aug 20255610 PMAQI
8th Aug 20255511 PMAQI
9th Aug 20255512 AMAQI
9th Aug 2025521 AMAQI
9th Aug 2025522 AMAQI
9th Aug 2025523 AMAQI
9th Aug 2025524 AMAQI
24°C20/30°C
9th Aug 2025535 AMAQI
9th Aug 2025536 AMAQI
9th Aug 2025537 AMAQI
9th Aug 2025538 AMAQI
9th Aug 2025599 AMAQI
9th Aug 20256210 AMAQI
9th Aug 20256311 AMAQI
9th Aug 20256312 PMAQI
9th Aug 2025611 PMAQI
9th Aug 2025562 PMAQI
9th Aug 2025563 PMAQI
9th Aug 2025544 PMAQI
9th Aug 2025535 PMAQI
9th Aug 2025466 PMAQI
9th Aug 2025457 PMAQI
9th Aug 2025488 PMAQI
9th Aug 2025539 PMAQI
9th Aug 20255210 PMAQI
9th Aug 20255211 PMAQI
10th Aug 20255112 AMAQI
10th Aug 2025521 AMAQI
10th Aug 2025532 AMAQI
10th Aug 2025533 AMAQI
10th Aug 2025534 AMAQI
23°C20/25°C
10th Aug 2025545 AMAQI
10th Aug 2025546 AMAQI
10th Aug 2025547 AMAQI
10th Aug 2025548 AMAQI
10th Aug 2025499 AMAQI
10th Aug 20254510 AMAQI
10th Aug 20255211 AMAQI
10th Aug 20255412 PMAQI
10th Aug 2025501 PMAQI
10th Aug 2025422 PMAQI
10th Aug 2025423 PMAQI
10th Aug 2025454 PMAQI
10th Aug 2025505 PMAQI
10th Aug 2025556 PMAQI
10th Aug 2025597 PMAQI
10th Aug 2025628 PMAQI
10th Aug 2025579 PMAQI
10th Aug 20255810 PMAQI
10th Aug 20255811 PMAQI
11th Aug 20255712 AMAQI
11th Aug 2025531 AMAQI
11th Aug 2025532 AMAQI
11th Aug 2025533 AMAQI
11th Aug 2025534 AMAQI
24°C20/30°C
11th Aug 2025535 AMAQI
11th Aug 2025536 AMAQI
11th Aug 2025537 AMAQI
11th Aug 2025538 AMAQI
11th Aug 2025629 AMAQI
11th Aug 20256610 AMAQI
11th Aug 20256211 AMAQI
11th Aug 20256112 PMAQI
11th Aug 2025601 PMAQI
11th Aug 2025602 PMAQI
11th Aug 2025613 PMAQI
11th Aug 2025604 PMAQI
11th Aug 2025585 PMAQI
11th Aug 2025566 PMAQI
11th Aug 2025567 PMAQI
11th Aug 2025548 PMAQI
11th Aug 2025559 PMAQI
11th Aug 20255310 PMAQI
11th Aug 20255311 PMAQI
12th Aug 20255312 AMAQI
12th Aug 2025541 AMAQI
12th Aug 2025532 AMAQI
12th Aug 2025533 AMAQI
12th Aug 2025554 AMAQI
24°C21/27°C
12th Aug 2025555 AMAQI
12th Aug 2025556 AMAQI
12th Aug 2025557 AMAQI
12th Aug 2025548 AMAQI
12th Aug 2025529 AMAQI
12th Aug 20255410 AMAQI
12th Aug 20255111 AMAQI
12th Aug 20254612 PMAQI
12th Aug 2025501 PMAQI
12th Aug 2025442 PMAQI
12th Aug 2025373 PMAQI
12th Aug 2025324 PMAQI
12th Aug 2025285 PMAQI
12th Aug 2025306 PMAQI
12th Aug 2025367 PMAQI
12th Aug 2025428 PMAQI
12th Aug 2025469 PMAQI
12th Aug 20254210 PMAQI
12th Aug 20254311 PMAQI
13th Aug 20254712 AMAQI
13th Aug 2025531 AMAQI
13th Aug 2025532 AMAQI
13th Aug 2025533 AMAQI
13th Aug 2025534 AMAQI
24°C20/30°C
13th Aug 2025535 AMAQI
13th Aug 2025526 AMAQI
13th Aug 2025527 AMAQI
13th Aug 2025528 AMAQI
13th Aug 2025299 AMAQI
13th Aug 20252910 AMAQI
13th Aug 20252811 AMAQI
13th Aug 20252412 PMAQI
13th Aug 2025291 PMAQI
13th Aug 2025272 PMAQI
13th Aug 2025313 PMAQI
13th Aug 2025264 PMAQI
13th Aug 2025305 PMAQI
13th Aug 2025306 PMAQI
13th Aug 2025357 PMAQI
13th Aug 2025378 PMAQI
13th Aug 2025399 PMAQI
13th Aug 20254210 PMAQI
13th Aug 20254111 PMAQI
14th Aug 20254812 AMAQI
14th Aug 2025501 AMAQI
14th Aug 2025522 AMAQI
14th Aug 2025523 AMAQI
14th Aug 2025494 AMAQI
24°C22/29°C
14th Aug 2025485 AMAQI
14th Aug 2025486 AMAQI
14th Aug 2025477 AMAQI
14th Aug 2025488 AMAQI
14th Aug 2025299 AMAQI
14th Aug 20253510 AMAQI
14th Aug 20253011 AMAQI
14th Aug 20253112 PMAQI
14th Aug 2025321 PMAQI
14th Aug 2025302 PMAQI
14th Aug 2025333 PMAQI
14th Aug 2025284 PMAQI
14th Aug 2025315 PMAQI
14th Aug 2025306 PMAQI
14th Aug 2025327 PMAQI
14th Aug 2025378 PMAQI
14th Aug 2025409 PMAQI
14th Aug 20253910 PMAQI
14th Aug 20254011 PMAQI
15th Aug 20254312 AMAQI
15th Aug 2025481 AMAQI
15th Aug 2025472 AMAQI
15th Aug 2025473 AMAQI
15th Aug 2025454 AMAQI
25°C22/27°C
15th Aug 2025455 AMAQI
15th Aug 2025446 AMAQI
15th Aug 2025457 AMAQI
15th Aug 2025448 AMAQI
15th Aug 2025359 AMAQI
15th Aug 20253210 AMAQI
15th Aug 20253611 AMAQI
15th Aug 20253512 PMAQI
15th Aug 2025311 PMAQI
15th Aug 2025302 PMAQI
15th Aug 2025383 PMAQI
15th Aug 2025314 PMAQI
15th Aug 2025275 PMAQI
15th Aug 2025286 PMAQI
15th Aug 2025287 PMAQI
15th Aug 2025348 PMAQI
15th Aug 2025369 PMAQI
15th Aug 20253710 PMAQI
15th Aug 20253711 PMAQI
16th Aug 20253912 AMAQI
16th Aug 2025441 AMAQI
16th Aug 2025432 AMAQI
16th Aug 2025443 AMAQI
16th Aug 2025434 AMAQI
26°C22/30°C
16th Aug 2025425 AMAQI
16th Aug 2025426 AMAQI
16th Aug 2025427 AMAQI
16th Aug 2025428 AMAQI
16th Aug 2025319 AMAQI
16th Aug 20253610 AMAQI
16th Aug 20253511 AMAQI
16th Aug 20253612 PMAQI
16th Aug 2025471 PMAQI
16th Aug 2025382 PMAQI
16th Aug 2025333 PMAQI
16th Aug 2025324 PMAQI
16th Aug 2025355 PMAQI
16th Aug 2025296 PMAQI
16th Aug 2025257 PMAQI
16th Aug 2025328 PMAQI
16th Aug 2025369 PMAQI
16th Aug 20253310 PMAQI
16th Aug 20253511 PMAQI
17th Aug 20253512 AMAQI
17th Aug 2025411 AMAQI
17th Aug 2025422 AMAQI
17th Aug 2025423 AMAQI
17th Aug 2025414 AMAQI
26°C23/31°C
17th Aug 2025415 AMAQI
17th Aug 2025426 AMAQI
17th Aug 2025427 AMAQI
17th Aug 2025408 AMAQI
17th Aug 2025309 AMAQI
17th Aug 20253110 AMAQI
17th Aug 20253111 AMAQI
17th Aug 20252912 PMAQI
17th Aug 2025361 PMAQI
17th Aug 2025412 PMAQI
17th Aug 2025393 PMAQI
17th Aug 2025394 PMAQI
17th Aug 2025445 PMAQI
17th Aug 2025416 PMAQI
17th Aug 2025447 PMAQI
17th Aug 2025448 PMAQI
17th Aug 2025499 PMAQI
17th Aug 20254610 PMAQI
17th Aug 20255111 PMAQI
18th Aug 20255012 AMAQI
18th Aug 2025451 AMAQI
18th Aug 2025412 AMAQI
18th Aug 2025413 AMAQI
18th Aug 2025404 AMAQI
26°C22/31°C
18th Aug 2025415 AMAQI
18th Aug 2025416 AMAQI
18th Aug 2025417 AMAQI
18th Aug 2025408 AMAQI
18th Aug 2025539 AMAQI
18th Aug 20255710 AMAQI
18th Aug 20255911 AMAQI
18th Aug 20255712 PMAQI
18th Aug 2025611 PMAQI
18th Aug 2025602 PMAQI
18th Aug 2025603 PMAQI
18th Aug 2025604 PMAQI
18th Aug 2025605 PMAQI
18th Aug 2025596 PMAQI
18th Aug 2025587 PMAQI
18th Aug 2025548 PMAQI
18th Aug 2025539 PMAQI
18th Aug 20255210 PMAQI
18th Aug 20255011 PMAQI
19th Aug 20254912 AMAQI
19th Aug 2025471 AMAQI
19th Aug 2025432 AMAQI
19th Aug 2025423 AMAQI
19th Aug 2025464 AMAQI
27°C24/32°C
19th Aug 2025475 AMAQI
19th Aug 2025486 AMAQI
19th Aug 2025477 AMAQI
19th Aug 2025488 AMAQI
19th Aug 2025389 AMAQI
19th Aug 20254010 AMAQI
19th Aug 20253311 AMAQI
19th Aug 20254512 PMAQI
19th Aug 2025491 PMAQI
19th Aug 2025462 PMAQI
19th Aug 2025403 PMAQI
19th Aug 2025424 PMAQI
19th Aug 2025435 PMAQI
19th Aug 2025396 PMAQI
19th Aug 2025407 PMAQI
19th Aug 2025448 PMAQI
19th Aug 2025419 PMAQI
19th Aug 20254310 PMAQI
19th Aug 20254311 PMAQI
20th Aug 20254512 AMAQI
20th Aug 2025471 AMAQI
20th Aug 2025482 AMAQI
20th Aug 2025473 AMAQI
20th Aug 2025474 AMAQI
26°C23/31°C
20th Aug 2025475 AMAQI
20th Aug 2025466 AMAQI
20th Aug 2025477 AMAQI
20th Aug 2025478 AMAQI
20th Aug 2025359 AMAQI
20th Aug 20254610 AMAQI
20th Aug 20254611 AMAQI
20th Aug 20255212 PMAQI
20th Aug 2025441 PMAQI
20th Aug 2025432 PMAQI
20th Aug 2025433 PMAQI
20th Aug 2025554 PMAQI
20th Aug 2025415 PMAQI
20th Aug 2025426 PMAQI
20th Aug 2025497 PMAQI
20th Aug 2025488 PMAQI
20th Aug 2025479 PMAQI
20th Aug 20254610 PMAQI
20th Aug 20254811 PMAQI
21st Aug 20254712 AMAQI
21st Aug 2025471 AMAQI
21st Aug 2025472 AMAQI
21st Aug 2025473 AMAQI
21st Aug 2025484 AMAQI
27°C23/32°C
21st Aug 2025485 AMAQI
21st Aug 2025486 AMAQI
21st Aug 2025487 AMAQI
21st Aug 2025488 AMAQI
21st Aug 2025509 AMAQI
21st Aug 20255210 AMAQI
21st Aug 20254711 AMAQI
21st Aug 20255112 PMAQI
21st Aug 2025491 PMAQI
21st Aug 2025512 PMAQI
21st Aug 2025483 PMAQI
21st Aug 2025464 PMAQI
21st Aug 2025465 PMAQI
21st Aug 2025416 PMAQI
21st Aug 2025427 PMAQI
21st Aug 2025498 PMAQI
21st Aug 2025479 PMAQI
21st Aug 20254610 PMAQI
21st Aug 20254411 PMAQI
22nd Aug 20254512 AMAQI
22nd Aug 2025471 AMAQI
22nd Aug 2025492 AMAQI
22nd Aug 2025483 AMAQI
22nd Aug 2025504 AMAQI
--°C/°C
22nd Aug 2025505 AMAQI
5 AM12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
10 AM - 3 PM
51AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
4 PM - 7 PM
48AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 3 PM (Avg. 51), while the lowest AQI was between 4 PM to 7 PM (Avg. 48).
Night time
Avg. Highest Time
12 AM - 11 PM
51AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
51AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 51), while the lowest AQI was between 12 AM to 11 PM (Avg. 51).
2025 Days Vs Air Quality
Chonan, Chungnam, South Korea
2025
21%
49
73%
170
6%
13
Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)
Good
49 DaysModerate
170 DaysPoor
13 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 21%
Health Risk Level:
Very high
In 2025, 21% of 233 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
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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
73AQI
73AQI
2nd January 2025
67AQI
67AQI
3rd January 2025
61AQI
61AQI
4th January 2025
62AQI
62AQI
5th January 2025
66AQI
66AQI
6th January 2025
89AQI
89AQI
7th January 2025
59AQI
59AQI
8th January 2025
68AQI
68AQI
9th January 2025
41AQI
41AQI
10th January 2025
62AQI
62AQI
11th January 2025
64AQI
64AQI
12th January 2025
85AQI
85AQI
13th January 2025
89AQI
89AQI
14th January 2025
95AQI
95AQI
15th January 2025
58AQI
58AQI
16th January 2025
71AQI
71AQI
17th January 2025
86AQI
86AQI
18th January 2025
82AQI
82AQI
19th January 2025
87AQI
87AQI
20th January 2025
121AQI
121AQI
21st January 2025
137AQI
137AQI
22nd January 2025
141AQI
141AQI
23rd January 2025
123AQI
123AQI
24th January 2025
124AQI
124AQI
25th January 2025
87AQI
87AQI
26th January 2025
62AQI
62AQI
27th January 2025
66AQI
66AQI
28th January 2025
53AQI
53AQI
29th January 2025
58AQI
58AQI
30th January 2025
57AQI
57AQI
31st January 2025
81AQI
81AQI
1st February 2025
88AQI
88AQI
2nd February 2025
97AQI
97AQI
3rd February 2025
58AQI
58AQI
4th February 2025
53AQI
53AQI
5th February 2025
48AQI
48AQI
6th February 2025
53AQI
53AQI
7th February 2025
47AQI
47AQI
8th February 2025
46AQI
46AQI
9th February 2025
55AQI
55AQI
10th February 2025
59AQI
59AQI
11th February 2025
81AQI
81AQI
12th February 2025
74AQI
74AQI
13th February 2025
54AQI
54AQI
14th February 2025
83AQI
83AQI
15th February 2025
59AQI
59AQI
16th February 2025
109AQI
109AQI
17th February 2025
53AQI
53AQI
18th February 2025
62AQI
62AQI
19th February 2025
49AQI
49AQI
20th February 2025
56AQI
56AQI
21st February 2025
55AQI
55AQI
22nd February 2025
59AQI
59AQI
23rd February 2025
55AQI
55AQI
24th February 2025
57AQI
57AQI
25th February 2025
55AQI
55AQI
26th February 2025
76AQI
76AQI
27th February 2025
61AQI
61AQI
28th February 2025
82AQI
82AQI
1st March 2025
99AQI
99AQI
2nd March 2025
79AQI
79AQI
3rd March 2025
56AQI
56AQI
4th March 2025
46AQI
46AQI
5th March 2025
43AQI
43AQI
6th March 2025
76AQI
76AQI
7th March 2025
90AQI
90AQI
8th March 2025
87AQI
87AQI
9th March 2025
105AQI
105AQI
10th March 2025
109AQI
109AQI
11th March 2025
106AQI
106AQI
12th March 2025
94AQI
94AQI
13th March 2025
96AQI
96AQI
14th March 2025
84AQI
84AQI
15th March 2025
58AQI
58AQI
16th March 2025
75AQI
75AQI
17th March 2025
64AQI
64AQI
18th March 2025
77AQI
77AQI
19th March 2025
81AQI
81AQI
20th March 2025
89AQI
89AQI
21st March 2025
92AQI
92AQI
22nd March 2025
102AQI
102AQI
23rd March 2025
109AQI
109AQI
24th March 2025
105AQI
105AQI
25th March 2025
125AQI
125AQI
26th March 2025
89AQI
89AQI
27th March 2025
92AQI
92AQI
28th March 2025
63AQI
63AQI
29th March 2025
52AQI
52AQI
30th March 2025
51AQI
51AQI
31st March 2025
60AQI
60AQI
1st April 2025
76AQI
76AQI
2nd April 2025
79AQI
79AQI
3rd April 2025
83AQI
83AQI
4th April 2025
85AQI
85AQI
5th April 2025
73AQI
73AQI
6th April 2025
68AQI
68AQI
7th April 2025
69AQI
69AQI
8th April 2025
74AQI
74AQI
9th April 2025
66AQI
66AQI
10th April 2025
74AQI
74AQI
11th April 2025
83AQI
83AQI
12th April 2025
62AQI
62AQI
13th April 2025
63AQI
63AQI
14th April 2025
45AQI
45AQI
15th April 2025
57AQI
57AQI
16th April 2025
59AQI
59AQI
17th April 2025
66AQI
66AQI
18th April 2025
80AQI
80AQI
19th April 2025
52AQI
52AQI
20th April 2025
68AQI
68AQI
21st April 2025
55AQI
55AQI
22nd April 2025
49AQI
49AQI
23rd April 2025
43AQI
43AQI
24th April 2025
62AQI
62AQI
25th April 2025
61AQI
61AQI
26th April 2025
53AQI
53AQI
27th April 2025
41AQI
41AQI
28th April 2025
61AQI
61AQI
29th April 2025
66AQI
66AQI
30th April 2025
59AQI
59AQI
1st May 2025
57AQI
57AQI
2nd May 2025
52AQI
52AQI
3rd May 2025
52AQI
52AQI
4th May 2025
47AQI
47AQI
5th May 2025
49AQI
49AQI
6th May 2025
48AQI
48AQI
7th May 2025
52AQI
52AQI
8th May 2025
67AQI
67AQI
9th May 2025
50AQI
50AQI
10th May 2025
55AQI
55AQI
11th May 2025
67AQI
67AQI
12th May 2025
69AQI
69AQI
13th May 2025
72AQI
72AQI
14th May 2025
73AQI
73AQI
15th May 2025
59AQI
59AQI
16th May 2025
49AQI
49AQI
17th May 2025
40AQI
40AQI
18th May 2025
59AQI
59AQI
19th May 2025
60AQI
60AQI
20th May 2025
45AQI
45AQI
21st May 2025
50AQI
50AQI
22nd May 2025
55AQI
55AQI
23rd May 2025
61AQI
61AQI
24th May 2025
50AQI
50AQI
25th May 2025
50AQI
50AQI
26th May 2025
62AQI
62AQI
27th May 2025
75AQI
75AQI
28th May 2025
76AQI
76AQI
29th May 2025
80AQI
80AQI
30th May 2025
78AQI
78AQI
31st May 2025
84AQI
84AQI
1st June 2025
92AQI
92AQI
2nd June 2025
100AQI
100AQI
3rd June 2025
74AQI
74AQI
4th June 2025
62AQI
62AQI
5th June 2025
56AQI
56AQI
6th June 2025
61AQI
61AQI
7th June 2025
68AQI
68AQI
8th June 2025
63AQI
63AQI
9th June 2025
63AQI
63AQI
10th June 2025
58AQI
58AQI
11th June 2025
53AQI
53AQI
12th June 2025
58AQI
58AQI
13th June 2025
69AQI
69AQI
14th June 2025
53AQI
53AQI
15th June 2025
58AQI
58AQI
16th June 2025
61AQI
61AQI
17th June 2025
62AQI
62AQI
18th June 2025
65AQI
65AQI
19th June 2025
65AQI
65AQI
20th June 2025
53AQI
53AQI
21st June 2025
52AQI
52AQI
22nd June 2025
50AQI
50AQI
23rd June 2025
56AQI
56AQI
24th June 2025
55AQI
55AQI
25th June 2025
47AQI
47AQI
26th June 2025
52AQI
52AQI
27th June 2025
60AQI
60AQI
28th June 2025
59AQI
59AQI
29th June 2025
51AQI
51AQI
30th June 2025
49AQI
49AQI
1st July 2025
47AQI
47AQI
2nd July 2025
45AQI
45AQI
3rd July 2025
51AQI
51AQI
4th July 2025
49AQI
49AQI
5th July 2025
48AQI
48AQI
6th July 2025
51AQI
51AQI
7th July 2025
58AQI
58AQI
8th July 2025
61AQI
61AQI
9th July 2025
53AQI
53AQI
10th July 2025
51AQI
51AQI
11th July 2025
53AQI
53AQI
12th July 2025
53AQI
53AQI
13th July 2025
61AQI
61AQI
14th July 2025
59AQI
59AQI
15th July 2025
47AQI
47AQI
16th July 2025
53AQI
53AQI
17th July 2025
41AQI
41AQI
18th July 2025
44AQI
44AQI
19th July 2025
35AQI
35AQI
20th July 2025
43AQI
43AQI
21st July 2025
41AQI
41AQI
22nd July 2025
39AQI
39AQI
23rd July 2025
48AQI
48AQI
24th July 2025
54AQI
54AQI
25th July 2025
57AQI
57AQI
26th July 2025
47AQI
47AQI
27th July 2025
43AQI
43AQI
28th July 2025
59AQI
59AQI
29th July 2025
63AQI
63AQI
30th July 2025
57AQI
57AQI
31st July 2025
57AQI
57AQI
1st August 2025
57AQI
57AQI
2nd August 2025
62AQI
62AQI
3rd August 2025
61AQI
61AQI
4th August 2025
52AQI
52AQI
5th August 2025
51AQI
51AQI
6th August 2025
47AQI
47AQI
7th August 2025
48AQI
48AQI
8th August 2025
54AQI
54AQI
9th August 2025
53AQI
53AQI
10th August 2025
53AQI
53AQI
11th August 2025
56AQI
56AQI
12th August 2025
47AQI
47AQI
13th August 2025
40AQI
40AQI
14th August 2025
40AQI
40AQI
15th August 2025
38AQI
38AQI
16th August 2025
37AQI
37AQI
17th August 2025
41AQI
41AQI
18th August 2025
50AQI
50AQI
19th August 2025
44AQI
44AQI
20th August 2025
46AQI
46AQI
21st August 2025
22nd August 2025
23rd August 2025
24th August 2025
25th August 2025
26th August 2025
27th August 2025
28th August 2025
29th August 2025
30th August 2025
31st August 2025
1st September 2025
2nd September 2025
3rd September 2025
4th September 2025
5th September 2025
6th September 2025
7th September 2025
8th September 2025
9th September 2025
10th September 2025
11th September 2025
12th September 2025
13th September 2025
14th September 2025
15th September 2025
16th September 2025
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
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
80AQI
64AQI
82AQI
64AQI
59AQI
61AQI
51AQI
49AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202564AQI
1
25
5
4
23
1
2
22
7
4
26
10
21
3
27
14
17
11
9
49
170
13
Highest AQI recorded in
March82AQI
Lowest AQI recorded in
August49AQI
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
January83AQI
Lowest AQI recorded in
July42AQI
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
February102AQI
Lowest AQI recorded in
September53AQI
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
February95AQI
Lowest AQI recorded in
August28AQI
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
March108AQI
Lowest AQI recorded in
September43AQI
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
December90AQI
Lowest AQI recorded in
July50AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
75AQILeast Polluted Year Recorded
2024(Avg.)
64AQIChonan's annual 2025 AQI (64) shows an average percentage change of -8.4% (improved AQI) compared to previous years: 2020 (68), 2021 (75), 2022 (74), 2023 (72), 2024 (64).
