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

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Aug 2023
83AQI
Lowest AQI recorded on
9th Aug 2026
17AQI

Same Day Analysis (9th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 17 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 8th Aug - 9th Aug 2026

Chonan, Chungnam, South Korea

AQI
Day
Night
.

5 AM8th Aug 2026

7 PM

4 AM9th Aug 2026

Day time
Avg. Highest Time
5AM8th Aug

61AQI

Avg. Lowest Time
5PM8th Aug

16AQI

Night time
Avg. Highest Time
10PM8th Aug

23AQI

Avg. Lowest Time
12AM9th Aug

12AQI

In the last 24 hours,

Chonan's AQI reached its highest point of 61 at 5 AM during the Day, while the lowest point, 12, was recorded at 12 AM during the Night between 8th Aug and 9th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Chonan, Chungnam, South Korea

JulAug
11th - 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 - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
11th Jul 2026255 AMAQI
11th Jul 2026246 AMAQI
11th Jul 2026187 AMAQI
11th Jul 2026188 AMAQI
11th Jul 2026279 AMAQI
11th Jul 20264310 AMAQI
11th Jul 20265611 AMAQI
11th Jul 20264812 PMAQI
11th Jul 2026391 PMAQI
11th Jul 2026382 PMAQI
11th Jul 2026293 PMAQI
11th Jul 2026304 PMAQI
11th Jul 2026355 PMAQI
11th Jul 2026496 PMAQI
11th Jul 2026517 PMAQI
11th Jul 2026368 PMAQI
11th Jul 2026529 PMAQI
11th Jul 20265110 PMAQI
11th Jul 20265911 PMAQI
12th Jul 20266912 AMAQI
12th Jul 2026671 AMAQI
12th Jul 2026492 AMAQI
12th Jul 2026453 AMAQI
12th Jul 2026414 AMAQI

27°C22/33°C

12th Jul 2026375 AMAQI
12th Jul 2026366 AMAQI
12th Jul 2026367 AMAQI
12th Jul 2026328 AMAQI
12th Jul 2026499 AMAQI
12th Jul 20265210 AMAQI
12th Jul 20265311 AMAQI
12th Jul 20265112 PMAQI
12th Jul 2026501 PMAQI
12th Jul 2026402 PMAQI
12th Jul 2026323 PMAQI
12th Jul 2026394 PMAQI
12th Jul 2026445 PMAQI
12th Jul 2026406 PMAQI
12th Jul 2026357 PMAQI
12th Jul 2026318 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20263311 PMAQI
13th Jul 20263312 AMAQI
13th Jul 2026371 AMAQI
13th Jul 2026202 AMAQI
13th Jul 2026233 AMAQI
13th Jul 2026284 AMAQI

28°C23/35°C

13th Jul 2026285 AMAQI
13th Jul 2026256 AMAQI
13th Jul 2026347 AMAQI
13th Jul 2026348 AMAQI
13th Jul 2026369 AMAQI
13th Jul 20264510 AMAQI
13th Jul 20265411 AMAQI
13th Jul 20265012 PMAQI
13th Jul 2026441 PMAQI
13th Jul 2026302 PMAQI
13th Jul 2026193 PMAQI
13th Jul 2026194 PMAQI
13th Jul 2026205 PMAQI
13th Jul 2026216 PMAQI
13th Jul 2026217 PMAQI
13th Jul 2026238 PMAQI
13th Jul 2026239 PMAQI
13th Jul 20262510 PMAQI
13th Jul 20262511 PMAQI
14th Jul 20262912 AMAQI
14th Jul 2026251 AMAQI
14th Jul 2026242 AMAQI
14th Jul 2026213 AMAQI
14th Jul 2026174 AMAQI

28°C24/34°C

14th Jul 2026205 AMAQI
14th Jul 2026246 AMAQI
14th Jul 2026187 AMAQI
14th Jul 2026158 AMAQI
14th Jul 2026209 AMAQI
14th Jul 20262910 AMAQI
14th Jul 20264511 AMAQI
14th Jul 20264612 PMAQI
14th Jul 2026291 PMAQI
14th Jul 2026222 PMAQI
14th Jul 2026213 PMAQI
14th Jul 2026194 PMAQI
14th Jul 2026195 PMAQI
14th Jul 2026186 PMAQI
14th Jul 2026247 PMAQI
14th Jul 2026228 PMAQI
14th Jul 2026209 PMAQI
14th Jul 20263010 PMAQI
14th Jul 20263511 PMAQI
15th Jul 20262412 AMAQI
15th Jul 2026371 AMAQI
15th Jul 2026302 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026174 AMAQI

28°C23/33°C

15th Jul 2026285 AMAQI
15th Jul 2026356 AMAQI
15th Jul 2026357 AMAQI
15th Jul 2026308 AMAQI
15th Jul 2026319 AMAQI
15th Jul 20263310 AMAQI
15th Jul 20263611 AMAQI
15th Jul 20262612 PMAQI
15th Jul 2026241 PMAQI
15th Jul 2026232 PMAQI
15th Jul 2026313 PMAQI
15th Jul 2026374 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026366 PMAQI
15th Jul 2026387 PMAQI
15th Jul 2026458 PMAQI
15th Jul 2026469 PMAQI
15th Jul 20265410 PMAQI
15th Jul 20265311 PMAQI
16th Jul 20265212 AMAQI
16th Jul 2026611 AMAQI
16th Jul 2026652 AMAQI
16th Jul 2026623 AMAQI
16th Jul 2026664 AMAQI

26°C22/29°C

16th Jul 2026665 AMAQI
16th Jul 2026616 AMAQI
16th Jul 2026557 AMAQI
16th Jul 2026558 AMAQI
16th Jul 2026599 AMAQI
16th Jul 20266110 AMAQI
16th Jul 20266011 AMAQI
16th Jul 20266512 PMAQI
16th Jul 2026651 PMAQI
16th Jul 2026692 PMAQI
16th Jul 2026703 PMAQI
16th Jul 2026684 PMAQI
16th Jul 2026595 PMAQI
16th Jul 2026596 PMAQI
16th Jul 2026557 PMAQI
16th Jul 2026458 PMAQI
16th Jul 2026419 PMAQI
16th Jul 20264310 PMAQI
16th Jul 20264811 PMAQI
17th Jul 20265312 AMAQI
17th Jul 2026551 AMAQI
17th Jul 2026562 AMAQI
17th Jul 2026573 AMAQI
17th Jul 2026614 AMAQI

25°C20/31°C

17th Jul 2026585 AMAQI
17th Jul 2026576 AMAQI
17th Jul 2026587 AMAQI
17th Jul 2026598 AMAQI
17th Jul 2026619 AMAQI
17th Jul 20266010 AMAQI
17th Jul 20266211 AMAQI
17th Jul 20266512 PMAQI
17th Jul 2026691 PMAQI
17th Jul 2026682 PMAQI
17th Jul 2026573 PMAQI
17th Jul 2026644 PMAQI
17th Jul 2026635 PMAQI
17th Jul 2026596 PMAQI
17th Jul 2026597 PMAQI
17th Jul 2026548 PMAQI
17th Jul 2026559 PMAQI
17th Jul 20265410 PMAQI
17th Jul 20265211 PMAQI
18th Jul 20264812 AMAQI
18th Jul 2026431 AMAQI
18th Jul 2026412 AMAQI
18th Jul 2026413 AMAQI
18th Jul 2026374 AMAQI

24°C22/28°C

18th Jul 2026315 AMAQI
18th Jul 2026276 AMAQI
18th Jul 2026307 AMAQI
18th Jul 2026358 AMAQI
18th Jul 2026429 AMAQI
18th Jul 20264510 AMAQI
18th Jul 20265211 AMAQI
18th Jul 20264512 PMAQI
18th Jul 2026391 PMAQI
18th Jul 2026432 PMAQI
18th Jul 2026423 PMAQI
18th Jul 2026374 PMAQI
18th Jul 2026315 PMAQI
18th Jul 2026316 PMAQI
18th Jul 2026257 PMAQI
18th Jul 2026238 PMAQI
18th Jul 2026229 PMAQI
18th Jul 20262510 PMAQI
18th Jul 20262511 PMAQI
19th Jul 20263512 AMAQI
19th Jul 2026351 AMAQI
19th Jul 2026342 AMAQI
19th Jul 2026353 AMAQI
19th Jul 2026324 AMAQI

25°C24/26°C

19th Jul 2026345 AMAQI
19th Jul 2026266 AMAQI
19th Jul 2026287 AMAQI
19th Jul 2026298 AMAQI
19th Jul 2026359 AMAQI
19th Jul 20262910 AMAQI
19th Jul 20263111 AMAQI
19th Jul 20263712 PMAQI
19th Jul 2026391 PMAQI
19th Jul 2026382 PMAQI
19th Jul 2026363 PMAQI
19th Jul 2026334 PMAQI
19th Jul 2026295 PMAQI
19th Jul 2026286 PMAQI
19th Jul 2026327 PMAQI
19th Jul 2026318 PMAQI
19th Jul 2026299 PMAQI
19th Jul 20263210 PMAQI
19th Jul 20263011 PMAQI
20th Jul 20263012 AMAQI
20th Jul 2026301 AMAQI
20th Jul 2026332 AMAQI
20th Jul 2026413 AMAQI
20th Jul 2026574 AMAQI

24°C23/25°C

20th Jul 2026495 AMAQI
20th Jul 2026476 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026488 AMAQI
20th Jul 2026359 AMAQI
20th Jul 20262910 AMAQI
20th Jul 20262211 AMAQI
20th Jul 20262612 PMAQI
20th Jul 2026271 PMAQI
20th Jul 2026262 PMAQI
20th Jul 2026353 PMAQI
20th Jul 2026434 PMAQI
20th Jul 2026465 PMAQI
20th Jul 2026486 PMAQI
20th Jul 2026567 PMAQI
20th Jul 2026488 PMAQI
20th Jul 2026459 PMAQI
20th Jul 20263910 PMAQI
20th Jul 20264111 PMAQI
21st Jul 20263912 AMAQI
21st Jul 2026291 AMAQI
21st Jul 2026242 AMAQI
21st Jul 2026223 AMAQI
21st Jul 2026244 AMAQI

25°C21/30°C

21st Jul 2026285 AMAQI
21st Jul 2026226 AMAQI
21st Jul 2026277 AMAQI
21st Jul 2026288 AMAQI
21st Jul 2026269 AMAQI
21st Jul 20262510 AMAQI
21st Jul 20262511 AMAQI
21st Jul 2026371 PMAQI
21st Jul 2026362 PMAQI
21st Jul 2026413 PMAQI
21st Jul 2026484 PMAQI
21st Jul 2026365 PMAQI
21st Jul 2026246 PMAQI
21st Jul 2026747 PMAQI
21st Jul 2026278 PMAQI
21st Jul 2026339 PMAQI
21st Jul 20263110 PMAQI
21st Jul 20263911 PMAQI
22nd Jul 20263912 AMAQI
22nd Jul 2026391 AMAQI
22nd Jul 2026372 AMAQI
22nd Jul 2026383 AMAQI
22nd Jul 2026384 AMAQI

25°C23/28°C

22nd Jul 2026405 AMAQI
22nd Jul 2026316 AMAQI
22nd Jul 2026277 AMAQI
22nd Jul 2026228 AMAQI
22nd Jul 2026229 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20264111 AMAQI
22nd Jul 20266812 PMAQI
22nd Jul 2026621 PMAQI
22nd Jul 2026522 PMAQI
22nd Jul 2026453 PMAQI
22nd Jul 2026454 PMAQI
22nd Jul 2026305 PMAQI
22nd Jul 2026486 PMAQI
22nd Jul 2026417 PMAQI
22nd Jul 2026408 PMAQI
22nd Jul 2026399 PMAQI
22nd Jul 20263310 PMAQI
22nd Jul 20263611 PMAQI
23rd Jul 20264212 AMAQI
23rd Jul 2026381 AMAQI
23rd Jul 2026402 AMAQI
23rd Jul 2026393 AMAQI
23rd Jul 2026374 AMAQI

27°C24/31°C

23rd Jul 2026405 AMAQI
23rd Jul 2026406 AMAQI
23rd Jul 2026437 AMAQI
23rd Jul 2026378 AMAQI
23rd Jul 2026399 AMAQI
23rd Jul 20264410 AMAQI
23rd Jul 20265211 AMAQI
23rd Jul 20265512 PMAQI
23rd Jul 2026551 PMAQI
23rd Jul 2026542 PMAQI
23rd Jul 2026573 PMAQI
23rd Jul 2026484 PMAQI
23rd Jul 2026495 PMAQI
23rd Jul 2026436 PMAQI
23rd Jul 2026427 PMAQI
23rd Jul 2026468 PMAQI
23rd Jul 2026509 PMAQI
23rd Jul 20265310 PMAQI
23rd Jul 20265411 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026341 AMAQI
24th Jul 2026342 AMAQI
24th Jul 2026363 AMAQI
24th Jul 2026404 AMAQI

26°C23/31°C

24th Jul 2026415 AMAQI
24th Jul 2026386 AMAQI
24th Jul 2026367 AMAQI
24th Jul 2026408 AMAQI
24th Jul 2026519 AMAQI
24th Jul 20265410 AMAQI
24th Jul 20265411 AMAQI
24th Jul 20265512 PMAQI
24th Jul 2026421 PMAQI
24th Jul 2026412 PMAQI
24th Jul 2026303 PMAQI
24th Jul 2026284 PMAQI
24th Jul 2026245 PMAQI
24th Jul 2026226 PMAQI
24th Jul 2026207 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026219 PMAQI
24th Jul 20262410 PMAQI
24th Jul 20262611 PMAQI
25th Jul 20262712 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026302 AMAQI
25th Jul 2026323 AMAQI
25th Jul 2026374 AMAQI

27°C22/33°C

25th Jul 2026315 AMAQI
25th Jul 2026306 AMAQI
25th Jul 2026267 AMAQI
25th Jul 2026308 AMAQI
25th Jul 2026359 AMAQI
25th Jul 20264010 AMAQI
25th Jul 20263711 AMAQI
25th Jul 20263412 PMAQI
25th Jul 2026241 PMAQI
25th Jul 2026212 PMAQI
25th Jul 2026193 PMAQI
25th Jul 2026204 PMAQI
25th Jul 2026205 PMAQI
25th Jul 2026216 PMAQI
25th Jul 2026227 PMAQI
25th Jul 2026228 PMAQI
25th Jul 2026229 PMAQI
25th Jul 20262310 PMAQI
25th Jul 20262711 PMAQI
26th Jul 20262912 AMAQI
26th Jul 2026271 AMAQI
26th Jul 2026332 AMAQI
26th Jul 2026313 AMAQI
26th Jul 2026234 AMAQI

27°C23/31°C

26th Jul 2026245 AMAQI
26th Jul 2026266 AMAQI
26th Jul 2026237 AMAQI
26th Jul 2026238 AMAQI
26th Jul 2026249 AMAQI
26th Jul 20263010 AMAQI
26th Jul 20263711 AMAQI
26th Jul 20263412 PMAQI
26th Jul 2026351 PMAQI
26th Jul 2026282 PMAQI
26th Jul 2026203 PMAQI
26th Jul 2026184 PMAQI
26th Jul 2026205 PMAQI
26th Jul 2026246 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026269 PMAQI
26th Jul 20262310 PMAQI
26th Jul 20262511 PMAQI
27th Jul 20262412 AMAQI
27th Jul 2026271 AMAQI
27th Jul 2026262 AMAQI
27th Jul 2026273 AMAQI
27th Jul 2026394 AMAQI

27°C23/32°C

27th Jul 2026495 AMAQI
27th Jul 2026416 AMAQI
27th Jul 2026377 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026369 AMAQI
27th Jul 20262210 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20263312 PMAQI
27th Jul 2026231 PMAQI
27th Jul 2026222 PMAQI
27th Jul 2026223 PMAQI
27th Jul 2026264 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026246 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026248 PMAQI
27th Jul 2026259 PMAQI
27th Jul 20262410 PMAQI
27th Jul 20262411 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026301 AMAQI
28th Jul 2026332 AMAQI
28th Jul 2026393 AMAQI
28th Jul 2026274 AMAQI

27°C24/33°C

28th Jul 2026275 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026407 AMAQI
28th Jul 2026388 AMAQI
28th Jul 2026339 AMAQI
28th Jul 20264810 AMAQI
28th Jul 20265611 AMAQI
28th Jul 20265512 PMAQI
28th Jul 2026551 PMAQI
28th Jul 2026562 PMAQI
28th Jul 2026503 PMAQI
28th Jul 2026534 PMAQI
28th Jul 2026625 PMAQI
28th Jul 2026636 PMAQI
28th Jul 2026587 PMAQI
28th Jul 2026528 PMAQI
28th Jul 2026449 PMAQI
28th Jul 20263710 PMAQI
28th Jul 20262611 PMAQI
29th Jul 20262212 AMAQI
29th Jul 2026191 AMAQI
29th Jul 2026212 AMAQI
29th Jul 2026263 AMAQI
29th Jul 2026314 AMAQI

27°C23/31°C

29th Jul 2026305 AMAQI
29th Jul 2026276 AMAQI
29th Jul 2026307 AMAQI
29th Jul 2026318 AMAQI
29th Jul 2026269 AMAQI
29th Jul 20262410 AMAQI
29th Jul 20262611 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026211 PMAQI
29th Jul 2026212 PMAQI
29th Jul 2026203 PMAQI
29th Jul 2026194 PMAQI
29th Jul 2026205 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026247 PMAQI
29th Jul 2026218 PMAQI
29th Jul 2026219 PMAQI
29th Jul 20262010 PMAQI
29th Jul 20262111 PMAQI
30th Jul 20262812 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026262 AMAQI
30th Jul 2026263 AMAQI
30th Jul 2026284 AMAQI

26°C23/31°C

30th Jul 2026275 AMAQI
30th Jul 2026266 AMAQI
30th Jul 2026227 AMAQI
30th Jul 2026228 AMAQI
30th Jul 2026199 AMAQI
30th Jul 20262210 AMAQI
30th Jul 20262611 AMAQI
30th Jul 20263212 PMAQI
30th Jul 2026281 PMAQI
30th Jul 2026322 PMAQI
30th Jul 2026223 PMAQI
30th Jul 2026224 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026276 PMAQI
30th Jul 2026357 PMAQI
30th Jul 2026438 PMAQI
30th Jul 2026319 PMAQI
30th Jul 20262410 PMAQI
30th Jul 20262311 PMAQI
31st Jul 20262512 AMAQI
31st Jul 2026231 AMAQI
31st Jul 2026282 AMAQI
31st Jul 2026243 AMAQI
31st Jul 2026264 AMAQI

26°C22/31°C

31st Jul 2026305 AMAQI
31st Jul 2026276 AMAQI
31st Jul 2026277 AMAQI
31st Jul 2026238 AMAQI
31st Jul 2026349 AMAQI
31st Jul 20264510 AMAQI
31st Jul 20264011 AMAQI
31st Jul 20265312 PMAQI
31st Jul 2026481 PMAQI
31st Jul 2026442 PMAQI
31st Jul 2026403 PMAQI
31st Jul 2026324 PMAQI
31st Jul 2026405 PMAQI
31st Jul 2026436 PMAQI
31st Jul 2026507 PMAQI
31st Jul 2026428 PMAQI
31st Jul 2026429 PMAQI
31st Jul 20264910 PMAQI
31st Jul 20265211 PMAQI
1st Aug 20264812 AMAQI
1st Aug 2026541 AMAQI
1st Aug 2026562 AMAQI
1st Aug 2026603 AMAQI
1st Aug 2026684 AMAQI

26°C21/32°C

1st Aug 2026685 AMAQI
1st Aug 2026686 AMAQI
1st Aug 2026627 AMAQI
1st Aug 2026648 AMAQI
1st Aug 2026689 AMAQI
1st Aug 20266910 AMAQI
1st Aug 20267411 AMAQI
1st Aug 20267412 PMAQI
1st Aug 2026701 PMAQI
1st Aug 2026552 PMAQI
1st Aug 2026553 PMAQI
1st Aug 2026494 PMAQI
1st Aug 2026485 PMAQI
1st Aug 2026586 PMAQI
1st Aug 2026587 PMAQI
1st Aug 2026588 PMAQI
1st Aug 2026589 PMAQI
1st Aug 20265510 PMAQI
1st Aug 20265611 PMAQI
2nd Aug 20265512 AMAQI
2nd Aug 2026511 AMAQI
2nd Aug 2026462 AMAQI
2nd Aug 2026453 AMAQI
2nd Aug 2026454 AMAQI

28°C24/32°C

2nd Aug 2026445 AMAQI
2nd Aug 2026446 AMAQI
2nd Aug 2026467 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026459 AMAQI
2nd Aug 20264810 AMAQI
2nd Aug 20264811 AMAQI
2nd Aug 20264912 PMAQI
2nd Aug 2026561 PMAQI
2nd Aug 2026472 PMAQI
2nd Aug 2026503 PMAQI
2nd Aug 2026494 PMAQI
2nd Aug 2026485 PMAQI
2nd Aug 2026486 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026398 PMAQI
2nd Aug 2026359 PMAQI
2nd Aug 20263210 PMAQI
2nd Aug 20263111 PMAQI
3rd Aug 20262912 AMAQI
3rd Aug 2026361 AMAQI
3rd Aug 2026392 AMAQI
3rd Aug 2026423 AMAQI
3rd Aug 2026454 AMAQI

27°C23/33°C

3rd Aug 2026445 AMAQI
3rd Aug 2026356 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026428 AMAQI
3rd Aug 2026409 AMAQI
3rd Aug 20264210 AMAQI
3rd Aug 20264511 AMAQI
3rd Aug 20265812 PMAQI
3rd Aug 2026641 PMAQI
3rd Aug 2026622 PMAQI
3rd Aug 2026533 PMAQI
3rd Aug 2026534 PMAQI
3rd Aug 2026575 PMAQI
3rd Aug 2026546 PMAQI
3rd Aug 2026547 PMAQI
3rd Aug 2026628 PMAQI
3rd Aug 2026729 PMAQI
3rd Aug 20267710 PMAQI
3rd Aug 20267711 PMAQI
4th Aug 20267312 AMAQI
4th Aug 2026721 AMAQI
4th Aug 2026702 AMAQI
4th Aug 2026683 AMAQI
4th Aug 2026684 AMAQI

28°C22/35°C

4th Aug 2026715 AMAQI
4th Aug 2026756 AMAQI
4th Aug 2026797 AMAQI
4th Aug 2026768 AMAQI
4th Aug 2026749 AMAQI
4th Aug 20267510 AMAQI
4th Aug 20267411 AMAQI
4th Aug 20267012 PMAQI
4th Aug 2026591 PMAQI
4th Aug 2026562 PMAQI
4th Aug 2026573 PMAQI
4th Aug 2026604 PMAQI
4th Aug 2026615 PMAQI
4th Aug 2026626 PMAQI
4th Aug 2026607 PMAQI
4th Aug 2026738 PMAQI
4th Aug 2026789 PMAQI
4th Aug 20267410 PMAQI
4th Aug 20266411 PMAQI
5th Aug 20264412 AMAQI
5th Aug 2026261 AMAQI
5th Aug 2026232 AMAQI
5th Aug 2026283 AMAQI
5th Aug 2026324 AMAQI

29°C24/35°C

5th Aug 2026385 AMAQI
5th Aug 2026376 AMAQI
5th Aug 2026377 AMAQI
5th Aug 2026288 AMAQI
5th Aug 2026249 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026232 PMAQI
5th Aug 2026233 PMAQI
5th Aug 2026194 PMAQI
5th Aug 2026265 PMAQI
5th Aug 2026346 PMAQI
5th Aug 2026317 PMAQI
5th Aug 2026348 PMAQI
5th Aug 2026359 PMAQI
5th Aug 20263410 PMAQI
5th Aug 20264611 PMAQI
6th Aug 20265912 AMAQI
6th Aug 2026641 AMAQI
6th Aug 2026712 AMAQI
6th Aug 2026743 AMAQI
6th Aug 2026734 AMAQI

29°C24/35°C

6th Aug 2026605 AMAQI
6th Aug 2026446 AMAQI
6th Aug 2026427 AMAQI
6th Aug 2026268 AMAQI
6th Aug 2026249 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20262111 AMAQI
6th Aug 20262012 PMAQI
6th Aug 2026231 PMAQI
6th Aug 2026272 PMAQI
6th Aug 2026213 PMAQI
6th Aug 2026234 PMAQI
6th Aug 2026255 PMAQI
6th Aug 2026266 PMAQI
6th Aug 2026307 PMAQI
6th Aug 2026288 PMAQI
6th Aug 2026269 PMAQI
6th Aug 20263010 PMAQI
6th Aug 20264111 PMAQI
7th Aug 20265112 AMAQI
7th Aug 2026641 AMAQI
7th Aug 2026692 AMAQI
7th Aug 2026723 AMAQI
7th Aug 2026734 AMAQI

29°C23/35°C

7th Aug 2026585 AMAQI
7th Aug 2026396 AMAQI
7th Aug 2026357 AMAQI
7th Aug 2026318 AMAQI
7th Aug 2026289 AMAQI
7th Aug 20262710 AMAQI
7th Aug 20262711 AMAQI
7th Aug 20262912 PMAQI
7th Aug 2026541 PMAQI
7th Aug 2026232 PMAQI
7th Aug 2026253 PMAQI
7th Aug 2026264 PMAQI
7th Aug 2026265 PMAQI
7th Aug 2026316 PMAQI
7th Aug 2026347 PMAQI
7th Aug 2026298 PMAQI
7th Aug 2026339 PMAQI
7th Aug 20263810 PMAQI
7th Aug 20265511 PMAQI
8th Aug 20266712 AMAQI
8th Aug 2026731 AMAQI
8th Aug 2026722 AMAQI
8th Aug 2026723 AMAQI
8th Aug 2026654 AMAQI

29°C23/36°C

8th Aug 2026615 AMAQI
8th Aug 2026416 AMAQI
8th Aug 2026367 AMAQI
8th Aug 2026378 AMAQI
8th Aug 2026369 AMAQI
8th Aug 20263010 AMAQI
8th Aug 20262211 AMAQI
8th Aug 20262212 PMAQI
8th Aug 2026221 PMAQI
8th Aug 2026222 PMAQI
8th Aug 2026203 PMAQI
8th Aug 2026164 PMAQI
8th Aug 2026165 PMAQI
8th Aug 2026246 PMAQI
8th Aug 2026237 PMAQI
8th Aug 2026198 PMAQI
8th Aug 2026209 PMAQI
8th Aug 20262310 PMAQI
8th Aug 20261711 PMAQI
9th Aug 20261212 AMAQI
9th Aug 2026131 AMAQI
9th Aug 2026132 AMAQI
9th Aug 2026163 AMAQI
9th Aug 2026164 AMAQI

28°C22/35°C

9th Aug 2026135 AMAQI
5 AM
9th Aug 2026136 AMAQI
9th Aug 2026147 AMAQI
9th Aug 2026178 AMAQI
9th Aug 2026199 AMAQI
9th Aug 20261910 AMAQI
9th Aug 20262111 AMAQI
9th Aug 20262412 PMAQI
12 PM
9th Aug 2026241 PMAQI
9th Aug 2026212 PMAQI
9th Aug 2026213 PMAQI
9th Aug 2026164 PMAQI
9th Aug 2026175 PMAQI
9th Aug 2026186 PMAQI
9th Aug 2026177 PMAQI
7 PM
9th Aug 2026158 PMAQI
9th Aug 2026169 PMAQI
9th Aug 20261610 PMAQI
9th Aug 20261611 PMAQI
12 AM
4 AM

25°C21/30°C

Day time
Avg. Highest Time
12 PM

44AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
6 AM - 8 AM

36AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 12 PM (Avg. 44), while the lowest AQI was between 6 AM to 8 AM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 4 AM

40AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM - 10 PM

36AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 40), while the lowest AQI was between 8 PM to 10 PM (Avg. 36).

2026 Days Vs Air Quality

Chonan, Chungnam, South Korea

2026

42%

92

46%

100

12%

26

Total number of days with different AQI categories in last 221 days in 2026 (144 days remaining)

Good
92 Days
Moderate
100 Days
Poor
26 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 42%

Health Risk Level:

Significant

In 2026, 42% of 221 days were within WHO’s safe air quality limits, and 58% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights

Chonan, Chungnam, South Korea

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
32AQI (US)
2nd January 2026
39AQI (US)
3rd January 2026
58AQI (US)
4th January 2026
85AQI (US)
5th January 2026
67AQI (US)
6th January 2026
53AQI (US)
7th January 2026
56AQI (US)
8th January 2026
29AQI (US)
9th January 2026
46AQI (US)
10th January 2026
57AQI (US)
11th January 2026
31AQI (US)
12th January 2026
45AQI (US)
13th January 2026
52AQI (US)
14th January 2026
36AQI (US)
15th January 2026
102AQI (US)
16th January 2026
144AQI (US)
17th January 2026
123AQI (US)
18th January 2026
121AQI (US)
19th January 2026
69AQI (US)
20th January 2026
38AQI (US)
21st January 2026
41AQI (US)
22nd January 2026
38AQI (US)
23rd January 2026
67AQI (US)
24th January 2026
57AQI (US)
25th January 2026
33AQI (US)
26th January 2026
55AQI (US)
27th January 2026
63AQI (US)
28th January 2026
41AQI (US)
29th January 2026
51AQI (US)
30th January 2026
55AQI (US)
31st January 2026
73AQI (US)
1st February 2026
84AQI (US)
2nd February 2026
71AQI (US)
3rd February 2026
66AQI (US)
4th February 2026
110AQI (US)
5th February 2026
128AQI (US)
6th February 2026
69AQI (US)
7th February 2026
44AQI (US)
8th February 2026
44AQI (US)
9th February 2026
57AQI (US)
10th February 2026
85AQI (US)
11th February 2026
109AQI (US)
12th February 2026
116AQI (US)
13th February 2026
133AQI (US)
14th February 2026
142AQI (US)
15th February 2026
108AQI (US)
16th February 2026
49AQI (US)
17th February 2026
55AQI (US)
18th February 2026
61AQI (US)
19th February 2026
42AQI (US)
20th February 2026
81AQI (US)
21st February 2026
94AQI (US)
22nd February 2026
58AQI (US)
23rd February 2026
31AQI (US)
24th February 2026
52AQI (US)
25th February 2026
59AQI (US)
26th February 2026
30AQI (US)
27th February 2026
34AQI (US)
28th February 2026
54AQI (US)
1st March 2026
36AQI (US)
2nd March 2026
20AQI (US)
3rd March 2026
45AQI (US)
4th March 2026
65AQI (US)
5th March 2026
89AQI (US)
6th March 2026
71AQI (US)
7th March 2026
58AQI (US)
8th March 2026
61AQI (US)
9th March 2026
100AQI (US)
10th March 2026
101AQI (US)
11th March 2026
102AQI (US)
12th March 2026
121AQI (US)
13th March 2026
52AQI (US)
14th March 2026
59AQI (US)
15th March 2026
96AQI (US)
16th March 2026
128AQI (US)
17th March 2026
130AQI (US)
18th March 2026
131AQI (US)
19th March 2026
61AQI (US)
20th March 2026
64AQI (US)
21st March 2026
102AQI (US)
22nd March 2026
93AQI (US)
23rd March 2026
115AQI (US)
24th March 2026
116AQI (US)
25th March 2026
100AQI (US)
26th March 2026
116AQI (US)
27th March 2026
127AQI (US)
28th March 2026
112AQI (US)
29th March 2026
114AQI (US)
30th March 2026
102AQI (US)
31st March 2026
59AQI (US)
1st April 2026
87AQI (US)
2nd April 2026
90AQI (US)
3rd April 2026
117AQI (US)
4th April 2026
48AQI (US)
5th April 2026
68AQI (US)
6th April 2026
63AQI (US)
7th April 2026
28AQI (US)
8th April 2026
48AQI (US)
9th April 2026
61AQI (US)
10th April 2026
39AQI (US)
11th April 2026
78AQI (US)
12th April 2026
88AQI (US)
13th April 2026
73AQI (US)
14th April 2026
65AQI (US)
15th April 2026
80AQI (US)
16th April 2026
66AQI (US)
17th April 2026
18th April 2026
63AQI (US)
19th April 2026
82AQI (US)
20th April 2026
77AQI (US)
21st April 2026
65AQI (US)
22nd April 2026
23rd April 2026
57AQI (US)
24th April 2026
39AQI (US)
25th April 2026
58AQI (US)
26th April 2026
59AQI (US)
27th April 2026
55AQI (US)
28th April 2026
43AQI (US)
29th April 2026
53AQI (US)
30th April 2026
53AQI (US)
1st May 2026
48AQI (US)
2nd May 2026
96AQI (US)
3rd May 2026
63AQI (US)
4th May 2026
33AQI (US)
5th May 2026
43AQI (US)
6th May 2026
38AQI (US)
7th May 2026
46AQI (US)
8th May 2026
42AQI (US)
9th May 2026
10th May 2026
39AQI (US)
11th May 2026
42AQI (US)
12th May 2026
33AQI (US)
13th May 2026
62AQI (US)
14th May 2026
58AQI (US)
15th May 2026
58AQI (US)
16th May 2026
77AQI (US)
17th May 2026
65AQI (US)
18th May 2026
56AQI (US)
19th May 2026
53AQI (US)
20th May 2026
63AQI (US)
21st May 2026
67AQI (US)
22nd May 2026
77AQI (US)
23rd May 2026
71AQI (US)
24th May 2026
71AQI (US)
25th May 2026
65AQI (US)
26th May 2026
49AQI (US)
27th May 2026
34AQI (US)
28th May 2026
39AQI (US)
29th May 2026
61AQI (US)
30th May 2026
48AQI (US)
31st May 2026
52AQI (US)
1st June 2026
50AQI (US)
2nd June 2026
64AQI (US)
3rd June 2026
72AQI (US)
4th June 2026
71AQI (US)
5th June 2026
30AQI (US)
6th June 2026
40AQI (US)
7th June 2026
40AQI (US)
8th June 2026
53AQI (US)
9th June 2026
38AQI (US)
10th June 2026
43AQI (US)
11th June 2026
43AQI (US)
12th June 2026
48AQI (US)
13th June 2026
45AQI (US)
14th June 2026
51AQI (US)
15th June 2026
46AQI (US)
16th June 2026
57AQI (US)
17th June 2026
66AQI (US)
18th June 2026
69AQI (US)
19th June 2026
61AQI (US)
20th June 2026
22AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
37AQI (US)
23rd June 2026
29AQI (US)
24th June 2026
15AQI (US)
25th June 2026
27AQI (US)
26th June 2026
37AQI (US)
27th June 2026
63AQI (US)
28th June 2026
56AQI (US)
29th June 2026
52AQI (US)
30th June 2026
59AQI (US)
1st July 2026
49AQI (US)
2nd July 2026
41AQI (US)
3rd July 2026
30AQI (US)
4th July 2026
54AQI (US)
5th July 2026
34AQI (US)
6th July 2026
27AQI (US)
7th July 2026
29AQI (US)
8th July 2026
23AQI (US)
9th July 2026
21AQI (US)
10th July 2026
34AQI (US)
11th July 2026
36AQI (US)
12th July 2026
43AQI (US)
13th July 2026
30AQI (US)
14th July 2026
25AQI (US)
15th July 2026
34AQI (US)
16th July 2026
59AQI (US)
17th July 2026
59AQI (US)
18th July 2026
36AQI (US)
19th July 2026
32AQI (US)
20th July 2026
39AQI (US)
21st July 2026
32AQI (US)
22nd July 2026
39AQI (US)
23rd July 2026
46AQI (US)
24th July 2026
36AQI (US)
25th July 2026
27AQI (US)
26th July 2026
26AQI (US)
27th July 2026
28AQI (US)
28th July 2026
44AQI (US)
29th July 2026
24AQI (US)
30th July 2026
27AQI (US)
31st July 2026
37AQI (US)
1st August 2026
61AQI (US)
2nd August 2026
45AQI (US)
3rd August 2026
51AQI (US)
4th August 2026
69AQI (US)
5th August 2026
31AQI (US)
6th August 2026
38AQI (US)
7th August 2026
41AQI (US)
8th August 2026
36AQI (US)
9th August 2026
17AQI (US)
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

60AQI (US)

74AQI (US)

89AQI (US)

64AQI (US)

55AQI (US)

47AQI (US)

36AQI (US)

43AQI (US)

No. of days

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

202660AQI (US)

12
15
4
7
14
7
3
14
14
6
21
1
13
17
17
13
28
3
6
3
92
100
26

Highest AQI (US) recorded in

March

89AQI (US)

Lowest AQI (US) recorded in

July

36AQI (US)

202562AQI (US)

1
25
5
4
23
1
2
22
7
4
26
10
21
3
27
14
17
19
12
26
4
12
19
5
20
5
7
22
2
107
238
20

Highest AQI (US) recorded in

March

82AQI (US)

Lowest AQI (US) recorded in

September

43AQI (US)

202464AQI (US)

7
15
9
8
13
7
1
5
21
4
1
2
23
5
6
23
2
3
27
23
8
9
22
19
11
15
16
9
20
1
4
27
110
226
28
2

Highest AQI (US) recorded in

January

83AQI (US)

Lowest AQI (US) recorded in

July

42AQI (US)

202372AQI (US)

4
18
6
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
42
8
1

Highest AQI (US) recorded in

February

102AQI (US)

Lowest AQI (US) recorded in

September

53AQI (US)

202274AQI (US)

18
9
3
13
5
4
5
15
11
4
21
5
6
24
1
14
16
8
16
1
17
10
2
10
17
4
3
19
7
1
4
24
3
72
193
47
8

Highest AQI (US) recorded in

January

95AQI (US)

Lowest AQI (US) recorded in

August

29AQI (US)

202175AQI (US)

2
19
9
1
15
9
3
2
15
10
3
1
2
25
3
6
21
2
1
1
3
24
3
13
18
14
17
23
7
6
23
2
5
17
6
2
6
15
10
83
216
54
8
2
1

Highest AQI (US) recorded in

March

109AQI (US)

Lowest AQI (US) recorded in

September

43AQI (US)

202069AQI (US)

2
9
2
3
17
1
3
13
2
4
24
2
17
14
17
14
15
15
5
20
6
3
18
8
1
1
19
10
1
70
163
31
2

Highest AQI (US) recorded in

December

90AQI (US)

Lowest AQI (US) recorded in

September

51AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2021(Avg.)
75AQI (US)
Least Polluted Year Recorded
2026(Avg.)
60AQI (US)

Chonan's annual 2026 AQI (US) (60) shows an average percentage change of -13.01% (improved AQI (US)) compared to previous years: 2020 (69), 2021 (75), 2022 (74), 2023 (72), 2024 (64), 2025 (62).