Gwacheon, Gyeonggi, 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
Gwacheon, Gyeonggi, South Korea
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
18th Aug 2023
81AQILowest AQI recorded on
9th Aug 2026
17AQISame Day Analysis (13th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 26 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 12th Aug - 13th Aug 2026
Gwacheon, Gyeonggi, South Korea
AQI
Day
Night
.
5 AM12th Aug 2026
7 PM
4 AM13th Aug 2026
Day time
Avg. Highest Time
2PM12th Aug
29AQI
Avg. Lowest Time
12PM12th Aug
24AQI
Night time
Avg. Highest Time
10PM12th Aug
27AQI
Avg. Lowest Time
2AM13th Aug
24AQI
In the last 24 hours,
Gwacheon's AQI reached its highest point of 29 at 2 PM during the Day, while the lowest point, 24, was recorded at 2 AM during the Night between 12th Aug and 13th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Gwacheon, Gyeonggi, South Korea
JulAug
15th - 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 - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
15th Jul 2026305 AMAQI
15th Jul 2026256 AMAQI
15th Jul 2026297 AMAQI
15th Jul 2026288 AMAQI
15th Jul 2026279 AMAQI
15th Jul 20262810 AMAQI
15th Jul 20262311 AMAQI
15th Jul 20262112 PMAQI
15th Jul 2026201 PMAQI
15th Jul 2026202 PMAQI
15th Jul 2026283 PMAQI
15th Jul 2026294 PMAQI
15th Jul 2026345 PMAQI
15th Jul 2026426 PMAQI
15th Jul 2026447 PMAQI
15th Jul 2026418 PMAQI
15th Jul 2026509 PMAQI
15th Jul 20265810 PMAQI
15th Jul 20265911 PMAQI
16th Jul 20265912 AMAQI
16th Jul 2026601 AMAQI
16th Jul 2026562 AMAQI
16th Jul 2026543 AMAQI
16th Jul 2026584 AMAQI
25°C23/28°C
16th Jul 2026585 AMAQI
16th Jul 2026596 AMAQI
16th Jul 2026647 AMAQI
16th Jul 2026648 AMAQI
16th Jul 2026709 AMAQI
16th Jul 20267810 AMAQI
16th Jul 20267911 AMAQI
16th Jul 20268212 PMAQI
16th Jul 2026861 PMAQI
16th Jul 2026942 PMAQI
16th Jul 2026993 PMAQI
16th Jul 2026934 PMAQI
16th Jul 2026725 PMAQI
16th Jul 2026636 PMAQI
16th Jul 2026557 PMAQI
16th Jul 2026508 PMAQI
16th Jul 2026529 PMAQI
16th Jul 20265210 PMAQI
16th Jul 20265011 PMAQI
17th Jul 20265212 AMAQI
17th Jul 2026521 AMAQI
17th Jul 2026542 AMAQI
17th Jul 2026513 AMAQI
17th Jul 2026514 AMAQI
27°C21/33°C
17th Jul 2026545 AMAQI
17th Jul 2026536 AMAQI
17th Jul 2026587 AMAQI
17th Jul 2026588 AMAQI
17th Jul 2026609 AMAQI
17th Jul 20266910 AMAQI
17th Jul 20267411 AMAQI
17th Jul 20267612 PMAQI
17th Jul 2026751 PMAQI
17th Jul 2026702 PMAQI
17th Jul 2026703 PMAQI
17th Jul 2026684 PMAQI
17th Jul 2026675 PMAQI
17th Jul 2026656 PMAQI
17th Jul 2026707 PMAQI
17th Jul 2026768 PMAQI
17th Jul 2026949 PMAQI
17th Jul 20269110 PMAQI
17th Jul 20268511 PMAQI
18th Jul 20269012 AMAQI
18th Jul 2026801 AMAQI
18th Jul 2026792 AMAQI
18th Jul 2026703 AMAQI
18th Jul 2026584 AMAQI
26°C23/33°C
18th Jul 2026395 AMAQI
18th Jul 2026286 AMAQI
18th Jul 2026167 AMAQI
18th Jul 2026138 AMAQI
18th Jul 2026149 AMAQI
18th Jul 20261510 AMAQI
18th Jul 20261511 AMAQI
18th Jul 20261512 PMAQI
18th Jul 2026141 PMAQI
18th Jul 2026132 PMAQI
18th Jul 2026173 PMAQI
18th Jul 2026184 PMAQI
18th Jul 2026175 PMAQI
18th Jul 2026226 PMAQI
18th Jul 2026237 PMAQI
18th Jul 2026228 PMAQI
18th Jul 2026199 PMAQI
18th Jul 20261510 PMAQI
18th Jul 20261211 PMAQI
19th Jul 20261212 AMAQI
19th Jul 2026111 AMAQI
19th Jul 2026122 AMAQI
19th Jul 2026123 AMAQI
19th Jul 2026164 AMAQI
23°C21/24°C
19th Jul 2026265 AMAQI
19th Jul 2026326 AMAQI
19th Jul 2026427 AMAQI
19th Jul 2026558 AMAQI
19th Jul 2026599 AMAQI
19th Jul 20266810 AMAQI
19th Jul 20266711 AMAQI
19th Jul 20266012 PMAQI
19th Jul 2026551 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026383 PMAQI
19th Jul 2026414 PMAQI
19th Jul 2026505 PMAQI
19th Jul 2026466 PMAQI
19th Jul 2026427 PMAQI
19th Jul 2026458 PMAQI
19th Jul 2026469 PMAQI
19th Jul 20264610 PMAQI
19th Jul 20264411 PMAQI
20th Jul 20264512 AMAQI
20th Jul 2026451 AMAQI
20th Jul 2026482 AMAQI
20th Jul 2026513 AMAQI
20th Jul 2026484 AMAQI
23°C22/23°C
20th Jul 2026465 AMAQI
20th Jul 2026516 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026518 AMAQI
20th Jul 2026539 AMAQI
20th Jul 20265310 AMAQI
20th Jul 20264411 AMAQI
20th Jul 20263212 PMAQI
20th Jul 2026241 PMAQI
20th Jul 2026232 PMAQI
20th Jul 2026243 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026165 PMAQI
20th Jul 2026186 PMAQI
20th Jul 2026167 PMAQI
20th Jul 2026178 PMAQI
20th Jul 2026209 PMAQI
20th Jul 20262110 PMAQI
20th Jul 20261911 PMAQI
21st Jul 20262412 AMAQI
21st Jul 2026361 AMAQI
21st Jul 2026372 AMAQI
21st Jul 2026323 AMAQI
21st Jul 2026304 AMAQI
25°C23/27°C
21st Jul 2026325 AMAQI
21st Jul 2026286 AMAQI
21st Jul 2026257 AMAQI
21st Jul 2026258 AMAQI
21st Jul 2026269 AMAQI
21st Jul 20262610 AMAQI
21st Jul 20263011 AMAQI
21st Jul 2026291 PMAQI
21st Jul 2026262 PMAQI
21st Jul 2026233 PMAQI
21st Jul 2026244 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026236 PMAQI
21st Jul 2026767 PMAQI
21st Jul 2026268 PMAQI
21st Jul 2026369 PMAQI
21st Jul 20263810 PMAQI
21st Jul 20264711 PMAQI
22nd Jul 20264712 AMAQI
22nd Jul 2026471 AMAQI
22nd Jul 2026522 AMAQI
22nd Jul 2026543 AMAQI
22nd Jul 2026444 AMAQI
24°C23/27°C
22nd Jul 2026305 AMAQI
22nd Jul 2026286 AMAQI
22nd Jul 2026307 AMAQI
22nd Jul 2026338 AMAQI
22nd Jul 2026409 AMAQI
22nd Jul 20264310 AMAQI
22nd Jul 20264611 AMAQI
22nd Jul 20264012 PMAQI
22nd Jul 2026321 PMAQI
22nd Jul 2026502 PMAQI
22nd Jul 2026543 PMAQI
22nd Jul 2026534 PMAQI
22nd Jul 2026545 PMAQI
22nd Jul 2026606 PMAQI
22nd Jul 2026577 PMAQI
22nd Jul 2026578 PMAQI
22nd Jul 2026579 PMAQI
22nd Jul 20264610 PMAQI
22nd Jul 20263611 PMAQI
23rd Jul 20264512 AMAQI
23rd Jul 2026491 AMAQI
23rd Jul 2026492 AMAQI
23rd Jul 2026533 AMAQI
23rd Jul 2026564 AMAQI
26°C24/28°C
23rd Jul 2026585 AMAQI
23rd Jul 2026576 AMAQI
23rd Jul 2026487 AMAQI
23rd Jul 2026528 AMAQI
23rd Jul 2026519 AMAQI
23rd Jul 20264810 AMAQI
23rd Jul 20264811 AMAQI
23rd Jul 20265712 PMAQI
23rd Jul 2026601 PMAQI
23rd Jul 2026602 PMAQI
23rd Jul 2026543 PMAQI
23rd Jul 2026554 PMAQI
23rd Jul 2026555 PMAQI
23rd Jul 2026536 PMAQI
23rd Jul 2026597 PMAQI
23rd Jul 2026568 PMAQI
23rd Jul 2026579 PMAQI
23rd Jul 20266410 PMAQI
23rd Jul 20266211 PMAQI
24th Jul 20266212 AMAQI
24th Jul 2026601 AMAQI
24th Jul 2026582 AMAQI
24th Jul 2026503 AMAQI
24th Jul 2026544 AMAQI
25°C24/28°C
24th Jul 2026525 AMAQI
24th Jul 2026506 AMAQI
24th Jul 2026507 AMAQI
24th Jul 2026518 AMAQI
24th Jul 2026559 AMAQI
24th Jul 20265410 AMAQI
24th Jul 20265911 AMAQI
24th Jul 20265812 PMAQI
24th Jul 2026611 PMAQI
24th Jul 2026602 PMAQI
24th Jul 2026503 PMAQI
24th Jul 2026534 PMAQI
24th Jul 2026535 PMAQI
24th Jul 2026526 PMAQI
24th Jul 2026507 PMAQI
24th Jul 2026468 PMAQI
24th Jul 2026529 PMAQI
24th Jul 20265110 PMAQI
24th Jul 20263911 PMAQI
25th Jul 20263912 AMAQI
25th Jul 2026371 AMAQI
25th Jul 2026362 AMAQI
25th Jul 2026403 AMAQI
25th Jul 2026404 AMAQI
27°C23/32°C
25th Jul 2026395 AMAQI
25th Jul 2026386 AMAQI
25th Jul 2026347 AMAQI
25th Jul 2026358 AMAQI
25th Jul 2026439 AMAQI
25th Jul 20264110 AMAQI
25th Jul 20265011 AMAQI
25th Jul 20264112 PMAQI
25th Jul 2026481 PMAQI
25th Jul 2026492 PMAQI
25th Jul 2026443 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026305 PMAQI
25th Jul 2026366 PMAQI
25th Jul 2026407 PMAQI
25th Jul 2026418 PMAQI
25th Jul 2026359 PMAQI
25th Jul 20264110 PMAQI
25th Jul 20263211 PMAQI
26th Jul 20262812 AMAQI
26th Jul 2026241 AMAQI
26th Jul 2026232 AMAQI
26th Jul 2026233 AMAQI
26th Jul 2026244 AMAQI
28°C25/32°C
26th Jul 2026245 AMAQI
26th Jul 2026246 AMAQI
26th Jul 2026247 AMAQI
26th Jul 2026318 AMAQI
26th Jul 2026379 AMAQI
26th Jul 20263910 AMAQI
26th Jul 20263911 AMAQI
26th Jul 20262812 PMAQI
26th Jul 2026301 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026263 PMAQI
26th Jul 2026294 PMAQI
26th Jul 2026325 PMAQI
26th Jul 2026326 PMAQI
26th Jul 2026327 PMAQI
26th Jul 2026318 PMAQI
26th Jul 2026249 PMAQI
26th Jul 20263410 PMAQI
26th Jul 20263111 PMAQI
27th Jul 20262812 AMAQI
27th Jul 2026291 AMAQI
27th Jul 2026282 AMAQI
27th Jul 2026273 AMAQI
27th Jul 2026234 AMAQI
28°C24/32°C
27th Jul 2026275 AMAQI
27th Jul 2026276 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026308 AMAQI
27th Jul 2026349 AMAQI
27th Jul 20263210 AMAQI
27th Jul 20262411 AMAQI
27th Jul 20262612 PMAQI
27th Jul 2026421 PMAQI
27th Jul 2026312 PMAQI
27th Jul 2026303 PMAQI
27th Jul 2026284 PMAQI
27th Jul 2026265 PMAQI
27th Jul 2026356 PMAQI
27th Jul 2026497 PMAQI
27th Jul 2026318 PMAQI
27th Jul 2026329 PMAQI
27th Jul 20262610 PMAQI
27th Jul 20262811 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026241 AMAQI
28th Jul 2026312 AMAQI
28th Jul 2026333 AMAQI
28th Jul 2026314 AMAQI
28°C25/33°C
28th Jul 2026315 AMAQI
28th Jul 2026296 AMAQI
28th Jul 2026337 AMAQI
28th Jul 2026328 AMAQI
28th Jul 2026329 AMAQI
28th Jul 20263910 AMAQI
28th Jul 20265311 AMAQI
28th Jul 20265512 PMAQI
28th Jul 2026511 PMAQI
28th Jul 2026632 PMAQI
28th Jul 2026603 PMAQI
28th Jul 2026614 PMAQI
28th Jul 2026595 PMAQI
28th Jul 2026586 PMAQI
28th Jul 2026597 PMAQI
28th Jul 2026598 PMAQI
28th Jul 2026579 PMAQI
28th Jul 20265510 PMAQI
28th Jul 20265711 PMAQI
29th Jul 20265212 AMAQI
29th Jul 2026461 AMAQI
29th Jul 2026442 AMAQI
29th Jul 2026383 AMAQI
29th Jul 2026414 AMAQI
28°C25/33°C
29th Jul 2026375 AMAQI
29th Jul 2026366 AMAQI
29th Jul 2026287 AMAQI
29th Jul 2026228 AMAQI
29th Jul 2026239 AMAQI
29th Jul 20262410 AMAQI
29th Jul 20262511 AMAQI
29th Jul 20262312 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026222 PMAQI
29th Jul 2026243 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026265 PMAQI
29th Jul 2026316 PMAQI
29th Jul 2026317 PMAQI
29th Jul 2026298 PMAQI
29th Jul 2026309 PMAQI
29th Jul 20263110 PMAQI
29th Jul 20262511 PMAQI
30th Jul 20262712 AMAQI
30th Jul 2026241 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026243 AMAQI
30th Jul 2026254 AMAQI
28°C24/33°C
30th Jul 2026265 AMAQI
30th Jul 2026296 AMAQI
30th Jul 2026267 AMAQI
30th Jul 2026268 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262410 AMAQI
30th Jul 20262811 AMAQI
30th Jul 20263112 PMAQI
30th Jul 2026301 PMAQI
30th Jul 2026322 PMAQI
30th Jul 2026373 PMAQI
30th Jul 2026384 PMAQI
30th Jul 2026355 PMAQI
30th Jul 2026356 PMAQI
30th Jul 2026317 PMAQI
30th Jul 2026308 PMAQI
30th Jul 2026339 PMAQI
30th Jul 20263010 PMAQI
30th Jul 20263011 PMAQI
31st Jul 20263012 AMAQI
31st Jul 2026261 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026333 AMAQI
31st Jul 2026334 AMAQI
28°C24/33°C
31st Jul 2026355 AMAQI
31st Jul 2026266 AMAQI
31st Jul 2026307 AMAQI
31st Jul 2026408 AMAQI
31st Jul 2026299 AMAQI
31st Jul 20264610 AMAQI
31st Jul 20265511 AMAQI
31st Jul 20263612 PMAQI
31st Jul 2026501 PMAQI
31st Jul 2026522 PMAQI
31st Jul 2026493 PMAQI
31st Jul 2026564 PMAQI
31st Jul 2026565 PMAQI
31st Jul 2026556 PMAQI
31st Jul 2026577 PMAQI
31st Jul 2026578 PMAQI
31st Jul 2026609 PMAQI
31st Jul 20266410 PMAQI
31st Jul 20266711 PMAQI
1st Aug 20267012 AMAQI
1st Aug 2026761 AMAQI
1st Aug 2026762 AMAQI
1st Aug 2026803 AMAQI
1st Aug 2026874 AMAQI
28°C24/34°C
1st Aug 2026875 AMAQI
1st Aug 2026886 AMAQI
1st Aug 2026817 AMAQI
1st Aug 2026818 AMAQI
1st Aug 2026759 AMAQI
1st Aug 20268110 AMAQI
1st Aug 20268011 AMAQI
1st Aug 20267312 PMAQI
1st Aug 2026691 PMAQI
1st Aug 2026632 PMAQI
1st Aug 2026633 PMAQI
1st Aug 2026684 PMAQI
1st Aug 2026625 PMAQI
1st Aug 2026606 PMAQI
1st Aug 2026667 PMAQI
1st Aug 2026598 PMAQI
1st Aug 2026639 PMAQI
1st Aug 20266510 PMAQI
1st Aug 20265811 PMAQI
2nd Aug 20265812 AMAQI
2nd Aug 2026591 AMAQI
2nd Aug 2026572 AMAQI
2nd Aug 2026583 AMAQI
2nd Aug 2026654 AMAQI
29°C26/34°C
2nd Aug 2026735 AMAQI
2nd Aug 2026676 AMAQI
2nd Aug 2026527 AMAQI
2nd Aug 2026638 AMAQI
2nd Aug 2026589 AMAQI
2nd Aug 20265510 AMAQI
2nd Aug 20266011 AMAQI
2nd Aug 20265712 PMAQI
2nd Aug 2026601 PMAQI
2nd Aug 2026522 PMAQI
2nd Aug 2026543 PMAQI
2nd Aug 2026514 PMAQI
2nd Aug 2026445 PMAQI
2nd Aug 2026366 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026368 PMAQI
2nd Aug 2026389 PMAQI
2nd Aug 20264210 PMAQI
2nd Aug 20264411 PMAQI
3rd Aug 20264212 AMAQI
3rd Aug 2026471 AMAQI
3rd Aug 2026472 AMAQI
3rd Aug 2026493 AMAQI
3rd Aug 2026484 AMAQI
30°C25/36°C
3rd Aug 2026445 AMAQI
3rd Aug 2026456 AMAQI
3rd Aug 2026487 AMAQI
3rd Aug 2026498 AMAQI
3rd Aug 2026549 AMAQI
3rd Aug 20265310 AMAQI
3rd Aug 20265811 AMAQI
3rd Aug 20266412 PMAQI
3rd Aug 2026671 PMAQI
3rd Aug 2026642 PMAQI
3rd Aug 2026653 PMAQI
3rd Aug 2026644 PMAQI
3rd Aug 2026595 PMAQI
3rd Aug 2026646 PMAQI
3rd Aug 2026657 PMAQI
3rd Aug 2026668 PMAQI
3rd Aug 2026649 PMAQI
3rd Aug 20266210 PMAQI
3rd Aug 20266211 PMAQI
4th Aug 20266712 AMAQI
4th Aug 2026691 AMAQI
4th Aug 2026692 AMAQI
4th Aug 2026713 AMAQI
4th Aug 2026684 AMAQI
31°C25/38°C
4th Aug 2026665 AMAQI
4th Aug 2026686 AMAQI
4th Aug 2026677 AMAQI
4th Aug 2026658 AMAQI
4th Aug 2026599 AMAQI
4th Aug 20266110 AMAQI
4th Aug 20266511 AMAQI
4th Aug 20267112 PMAQI
4th Aug 2026721 PMAQI
4th Aug 2026652 PMAQI
4th Aug 2026693 PMAQI
4th Aug 2026744 PMAQI
4th Aug 2026725 PMAQI
4th Aug 2026696 PMAQI
4th Aug 2026727 PMAQI
4th Aug 2026538 PMAQI
4th Aug 2026509 PMAQI
4th Aug 20265210 PMAQI
4th Aug 20265211 PMAQI
5th Aug 20265512 AMAQI
5th Aug 2026581 AMAQI
5th Aug 2026642 AMAQI
5th Aug 2026713 AMAQI
5th Aug 2026694 AMAQI
32°C27/38°C
5th Aug 2026635 AMAQI
5th Aug 2026566 AMAQI
5th Aug 2026537 AMAQI
5th Aug 2026438 AMAQI
5th Aug 2026419 AMAQI
5th Aug 20263910 AMAQI
5th Aug 20264611 AMAQI
5th Aug 20264312 PMAQI
5th Aug 2026441 PMAQI
5th Aug 2026492 PMAQI
5th Aug 2026473 PMAQI
5th Aug 2026594 PMAQI
5th Aug 2026525 PMAQI
5th Aug 2026496 PMAQI
5th Aug 2026517 PMAQI
5th Aug 2026608 PMAQI
5th Aug 2026649 PMAQI
5th Aug 20265910 PMAQI
5th Aug 20265711 PMAQI
6th Aug 20266312 AMAQI
6th Aug 2026611 AMAQI
6th Aug 2026532 AMAQI
6th Aug 2026493 AMAQI
6th Aug 2026454 AMAQI
31°C26/38°C
6th Aug 2026475 AMAQI
6th Aug 2026506 AMAQI
6th Aug 2026417 AMAQI
6th Aug 2026448 AMAQI
6th Aug 2026459 AMAQI
6th Aug 20264410 AMAQI
6th Aug 20264611 AMAQI
6th Aug 20264912 PMAQI
6th Aug 2026461 PMAQI
6th Aug 2026502 PMAQI
6th Aug 2026503 PMAQI
6th Aug 2026554 PMAQI
6th Aug 2026465 PMAQI
6th Aug 2026446 PMAQI
6th Aug 2026407 PMAQI
6th Aug 2026488 PMAQI
6th Aug 2026629 PMAQI
6th Aug 20267110 PMAQI
6th Aug 20267711 PMAQI
7th Aug 20267912 AMAQI
7th Aug 2026761 AMAQI
7th Aug 2026742 AMAQI
7th Aug 2026723 AMAQI
7th Aug 2026724 AMAQI
32°C27/38°C
7th Aug 2026705 AMAQI
7th Aug 2026706 AMAQI
7th Aug 2026707 AMAQI
7th Aug 2026658 AMAQI
7th Aug 2026659 AMAQI
7th Aug 20266510 AMAQI
7th Aug 20266411 AMAQI
7th Aug 20266412 PMAQI
7th Aug 2026711 PMAQI
7th Aug 2026522 PMAQI
7th Aug 2026533 PMAQI
7th Aug 2026574 PMAQI
7th Aug 2026605 PMAQI
7th Aug 2026676 PMAQI
7th Aug 2026647 PMAQI
7th Aug 2026648 PMAQI
7th Aug 2026619 PMAQI
7th Aug 20265910 PMAQI
7th Aug 20266011 PMAQI
8th Aug 20265412 AMAQI
8th Aug 2026591 AMAQI
8th Aug 2026602 AMAQI
8th Aug 2026553 AMAQI
8th Aug 2026484 AMAQI
32°C27/39°C
8th Aug 2026425 AMAQI
8th Aug 2026356 AMAQI
8th Aug 2026367 AMAQI
8th Aug 2026318 AMAQI
8th Aug 2026299 AMAQI
8th Aug 20263010 AMAQI
8th Aug 20263111 AMAQI
8th Aug 20262312 PMAQI
8th Aug 2026251 PMAQI
8th Aug 2026192 PMAQI
8th Aug 2026173 PMAQI
8th Aug 2026204 PMAQI
8th Aug 2026185 PMAQI
8th Aug 2026166 PMAQI
8th Aug 2026177 PMAQI
8th Aug 2026168 PMAQI
8th Aug 2026179 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20261812 AMAQI
9th Aug 2026191 AMAQI
9th Aug 2026192 AMAQI
9th Aug 2026183 AMAQI
9th Aug 2026184 AMAQI
29°C24/35°C
9th Aug 2026205 AMAQI
9th Aug 2026186 AMAQI
9th Aug 2026167 AMAQI
9th Aug 2026168 AMAQI
9th Aug 2026199 AMAQI
9th Aug 20261410 AMAQI
9th Aug 20261411 AMAQI
9th Aug 20261212 PMAQI
9th Aug 2026131 PMAQI
9th Aug 2026132 PMAQI
9th Aug 2026143 PMAQI
9th Aug 2026164 PMAQI
9th Aug 2026145 PMAQI
9th Aug 2026146 PMAQI
9th Aug 2026177 PMAQI
9th Aug 2026248 PMAQI
9th Aug 2026239 PMAQI
9th Aug 20262410 PMAQI
9th Aug 20262311 PMAQI
10th Aug 20262312 AMAQI
10th Aug 2026251 AMAQI
10th Aug 2026242 AMAQI
10th Aug 2026263 AMAQI
10th Aug 2026204 AMAQI
25°C21/32°C
10th Aug 2026225 AMAQI
10th Aug 2026206 AMAQI
10th Aug 2026207 AMAQI
10th Aug 2026208 AMAQI
10th Aug 2026219 AMAQI
10th Aug 20262110 AMAQI
10th Aug 20262111 AMAQI
10th Aug 20262412 PMAQI
10th Aug 2026271 PMAQI
10th Aug 2026282 PMAQI
10th Aug 2026263 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026305 PMAQI
10th Aug 2026276 PMAQI
10th Aug 2026277 PMAQI
10th Aug 2026278 PMAQI
10th Aug 2026309 PMAQI
10th Aug 20262910 PMAQI
10th Aug 20262811 PMAQI
11th Aug 20262712 AMAQI
11th Aug 2026271 AMAQI
11th Aug 2026272 AMAQI
11th Aug 2026273 AMAQI
11th Aug 2026264 AMAQI
27°C22/33°C
11th Aug 2026255 AMAQI
11th Aug 2026226 AMAQI
11th Aug 2026247 AMAQI
11th Aug 2026248 AMAQI
11th Aug 2026249 AMAQI
11th Aug 20262510 AMAQI
11th Aug 20262811 AMAQI
11th Aug 20262712 PMAQI
11th Aug 2026251 PMAQI
11th Aug 2026352 PMAQI
11th Aug 2026253 PMAQI
11th Aug 2026264 PMAQI
11th Aug 2026255 PMAQI
11th Aug 2026246 PMAQI
11th Aug 2026337 PMAQI
11th Aug 2026268 PMAQI
11th Aug 2026289 PMAQI
11th Aug 20262610 PMAQI
11th Aug 20262511 PMAQI
12th Aug 20262812 AMAQI
12th Aug 2026291 AMAQI
12th Aug 2026242 AMAQI
12th Aug 2026243 AMAQI
12th Aug 2026264 AMAQI
27°C22/34°C
12th Aug 2026265 AMAQI
12th Aug 2026246 AMAQI
12th Aug 2026247 AMAQI
12th Aug 2026248 AMAQI
12th Aug 2026269 AMAQI
12th Aug 20262410 AMAQI
12th Aug 20262811 AMAQI
12th Aug 20262412 PMAQI
12th Aug 2026251 PMAQI
12th Aug 2026292 PMAQI
12th Aug 2026273 PMAQI
12th Aug 2026274 PMAQI
12th Aug 2026265 PMAQI
12th Aug 2026286 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026248 PMAQI
12th Aug 2026249 PMAQI
12th Aug 20262710 PMAQI
12th Aug 20262611 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026241 AMAQI
13th Aug 2026242 AMAQI
13th Aug 2026253 AMAQI
13th Aug 2026254 AMAQI
25°C19/31°C
13th Aug 2026255 AMAQI
5 AM13th Aug 2026266 AMAQI
13th Aug 2026267 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026269 AMAQI
13th Aug 20262610 AMAQI
13th Aug 20262611 AMAQI
13th Aug 20262912 PMAQI
12 PM13th Aug 2026261 PMAQI
13th Aug 2026282 PMAQI
13th Aug 2026273 PMAQI
13th Aug 2026284 PMAQI
13th Aug 2026285 PMAQI
13th Aug 2026266 PMAQI
13th Aug 2026267 PMAQI
7 PM13th Aug 2026248 PMAQI
13th Aug 2026289 PMAQI
13th Aug 20262510 PMAQI
13th Aug 20262611 PMAQI
12 AM
4 AM
26°C21/31°C
Day time
Avg. Highest Time
7 PM
45AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
6 AM - 10 AM
40AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 45), while the lowest AQI was between 6 AM to 10 AM (Avg. 40).
Night time
Avg. Highest Time
9 PM - 11 PM
44AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
8 PM
41AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 44), while the lowest AQI was between 8 PM to 8 PM (Avg. 41).
2026 Days Vs Air Quality
Gwacheon, Gyeonggi, South Korea
2026
46%
103
45%
99
9%
20
Total number of days with different AQI categories in last 225 days in 2026 (140 days remaining)
Good
103 DaysModerate
99 DaysPoor
20 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 46%
Health Risk Level:
Significant
In 2026, 46% of 225 days were within WHO’s safe air quality limits, and 54% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Gwacheon, Gyeonggi, 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
31AQI (US)
31AQI (US)
2nd January 2026
35AQI (US)
35AQI (US)
3rd January 2026
55AQI (US)
55AQI (US)
4th January 2026
82AQI (US)
82AQI (US)
5th January 2026
62AQI (US)
62AQI (US)
6th January 2026
60AQI (US)
60AQI (US)
7th January 2026
61AQI (US)
61AQI (US)
8th January 2026
31AQI (US)
31AQI (US)
9th January 2026
47AQI (US)
47AQI (US)
10th January 2026
58AQI (US)
58AQI (US)
11th January 2026
31AQI (US)
31AQI (US)
12th January 2026
41AQI (US)
41AQI (US)
13th January 2026
43AQI (US)
43AQI (US)
14th January 2026
39AQI (US)
39AQI (US)
15th January 2026
70AQI (US)
70AQI (US)
16th January 2026
138AQI (US)
138AQI (US)
17th January 2026
122AQI (US)
122AQI (US)
18th January 2026
87AQI (US)
87AQI (US)
19th January 2026
68AQI (US)
68AQI (US)
20th January 2026
39AQI (US)
39AQI (US)
21st January 2026
38AQI (US)
38AQI (US)
22nd January 2026
37AQI (US)
37AQI (US)
23rd January 2026
54AQI (US)
54AQI (US)
24th January 2026
58AQI (US)
58AQI (US)
25th January 2026
31AQI (US)
31AQI (US)
26th January 2026
56AQI (US)
56AQI (US)
27th January 2026
60AQI (US)
60AQI (US)
28th January 2026
39AQI (US)
39AQI (US)
29th January 2026
44AQI (US)
44AQI (US)
30th January 2026
56AQI (US)
56AQI (US)
31st January 2026
64AQI (US)
64AQI (US)
1st February 2026
68AQI (US)
68AQI (US)
2nd February 2026
72AQI (US)
72AQI (US)
3rd February 2026
63AQI (US)
63AQI (US)
4th February 2026
118AQI (US)
118AQI (US)
5th February 2026
132AQI (US)
132AQI (US)
6th February 2026
65AQI (US)
65AQI (US)
7th February 2026
43AQI (US)
43AQI (US)
8th February 2026
45AQI (US)
45AQI (US)
9th February 2026
52AQI (US)
52AQI (US)
10th February 2026
89AQI (US)
89AQI (US)
11th February 2026
122AQI (US)
122AQI (US)
12th February 2026
114AQI (US)
114AQI (US)
13th February 2026
129AQI (US)
129AQI (US)
14th February 2026
144AQI (US)
144AQI (US)
15th February 2026
107AQI (US)
107AQI (US)
16th February 2026
48AQI (US)
48AQI (US)
17th February 2026
46AQI (US)
46AQI (US)
18th February 2026
61AQI (US)
61AQI (US)
19th February 2026
50AQI (US)
50AQI (US)
20th February 2026
74AQI (US)
74AQI (US)
21st February 2026
96AQI (US)
96AQI (US)
22nd February 2026
51AQI (US)
51AQI (US)
23rd February 2026
30AQI (US)
30AQI (US)
24th February 2026
37AQI (US)
37AQI (US)
25th February 2026
48AQI (US)
48AQI (US)
26th February 2026
47AQI (US)
47AQI (US)
27th February 2026
28AQI (US)
28AQI (US)
28th February 2026
35AQI (US)
35AQI (US)
1st March 2026
41AQI (US)
41AQI (US)
2nd March 2026
14AQI (US)
14AQI (US)
3rd March 2026
32AQI (US)
32AQI (US)
4th March 2026
70AQI (US)
70AQI (US)
5th March 2026
96AQI (US)
96AQI (US)
6th March 2026
82AQI (US)
82AQI (US)
7th March 2026
56AQI (US)
56AQI (US)
8th March 2026
60AQI (US)
60AQI (US)
9th March 2026
102AQI (US)
102AQI (US)
10th March 2026
96AQI (US)
96AQI (US)
11th March 2026
82AQI (US)
82AQI (US)
12th March 2026
104AQI (US)
104AQI (US)
13th March 2026
45AQI (US)
45AQI (US)
14th March 2026
51AQI (US)
51AQI (US)
15th March 2026
98AQI (US)
98AQI (US)
16th March 2026
134AQI (US)
134AQI (US)
17th March 2026
138AQI (US)
138AQI (US)
18th March 2026
109AQI (US)
109AQI (US)
19th March 2026
46AQI (US)
46AQI (US)
20th March 2026
62AQI (US)
62AQI (US)
21st March 2026
98AQI (US)
98AQI (US)
22nd March 2026
83AQI (US)
83AQI (US)
23rd March 2026
93AQI (US)
93AQI (US)
24th March 2026
97AQI (US)
97AQI (US)
25th March 2026
76AQI (US)
76AQI (US)
26th March 2026
109AQI (US)
109AQI (US)
27th March 2026
128AQI (US)
128AQI (US)
28th March 2026
122AQI (US)
122AQI (US)
29th March 2026
96AQI (US)
96AQI (US)
30th March 2026
88AQI (US)
88AQI (US)
31st March 2026
57AQI (US)
57AQI (US)
1st April 2026
42AQI (US)
42AQI (US)
2nd April 2026
98AQI (US)
98AQI (US)
3rd April 2026
121AQI (US)
121AQI (US)
4th April 2026
60AQI (US)
60AQI (US)
5th April 2026
81AQI (US)
81AQI (US)
6th April 2026
56AQI (US)
56AQI (US)
7th April 2026
30AQI (US)
30AQI (US)
8th April 2026
52AQI (US)
52AQI (US)
9th April 2026
46AQI (US)
46AQI (US)
10th April 2026
42AQI (US)
42AQI (US)
11th April 2026
76AQI (US)
76AQI (US)
12th April 2026
95AQI (US)
95AQI (US)
13th April 2026
68AQI (US)
68AQI (US)
14th April 2026
76AQI (US)
76AQI (US)
15th April 2026
108AQI (US)
108AQI (US)
16th April 2026
47AQI (US)
47AQI (US)
17th April 2026
18th April 2026
54AQI (US)
54AQI (US)
19th April 2026
69AQI (US)
69AQI (US)
20th April 2026
58AQI (US)
58AQI (US)
21st April 2026
67AQI (US)
67AQI (US)
22nd April 2026
23rd April 2026
48AQI (US)
48AQI (US)
24th April 2026
42AQI (US)
42AQI (US)
25th April 2026
58AQI (US)
58AQI (US)
26th April 2026
48AQI (US)
48AQI (US)
27th April 2026
56AQI (US)
56AQI (US)
28th April 2026
45AQI (US)
45AQI (US)
29th April 2026
44AQI (US)
44AQI (US)
30th April 2026
53AQI (US)
53AQI (US)
1st May 2026
55AQI (US)
55AQI (US)
2nd May 2026
115AQI (US)
115AQI (US)
3rd May 2026
48AQI (US)
48AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
42AQI (US)
42AQI (US)
6th May 2026
33AQI (US)
33AQI (US)
7th May 2026
38AQI (US)
38AQI (US)
8th May 2026
36AQI (US)
36AQI (US)
9th May 2026
10th May 2026
34AQI (US)
34AQI (US)
11th May 2026
34AQI (US)
34AQI (US)
12th May 2026
38AQI (US)
38AQI (US)
13th May 2026
47AQI (US)
47AQI (US)
14th May 2026
47AQI (US)
47AQI (US)
15th May 2026
80AQI (US)
80AQI (US)
16th May 2026
78AQI (US)
78AQI (US)
17th May 2026
66AQI (US)
66AQI (US)
18th May 2026
56AQI (US)
56AQI (US)
19th May 2026
53AQI (US)
53AQI (US)
20th May 2026
63AQI (US)
63AQI (US)
21st May 2026
67AQI (US)
67AQI (US)
22nd May 2026
77AQI (US)
77AQI (US)
23rd May 2026
71AQI (US)
71AQI (US)
24th May 2026
70AQI (US)
70AQI (US)
25th May 2026
65AQI (US)
65AQI (US)
26th May 2026
48AQI (US)
48AQI (US)
27th May 2026
43AQI (US)
43AQI (US)
28th May 2026
30AQI (US)
30AQI (US)
29th May 2026
66AQI (US)
66AQI (US)
30th May 2026
57AQI (US)
57AQI (US)
31st May 2026
47AQI (US)
47AQI (US)
1st June 2026
45AQI (US)
45AQI (US)
2nd June 2026
71AQI (US)
71AQI (US)
3rd June 2026
72AQI (US)
72AQI (US)
4th June 2026
69AQI (US)
69AQI (US)
5th June 2026
25AQI (US)
25AQI (US)
6th June 2026
34AQI (US)
34AQI (US)
7th June 2026
23AQI (US)
23AQI (US)
8th June 2026
23AQI (US)
23AQI (US)
9th June 2026
26AQI (US)
26AQI (US)
10th June 2026
46AQI (US)
46AQI (US)
11th June 2026
59AQI (US)
59AQI (US)
12th June 2026
48AQI (US)
48AQI (US)
13th June 2026
46AQI (US)
46AQI (US)
14th June 2026
51AQI (US)
51AQI (US)
15th June 2026
42AQI (US)
42AQI (US)
16th June 2026
71AQI (US)
71AQI (US)
17th June 2026
76AQI (US)
76AQI (US)
18th June 2026
54AQI (US)
54AQI (US)
19th June 2026
61AQI (US)
61AQI (US)
20th June 2026
21AQI (US)
21AQI (US)
21st June 2026
16AQI (US)
16AQI (US)
22nd June 2026
26AQI (US)
26AQI (US)
23rd June 2026
35AQI (US)
35AQI (US)
24th June 2026
17AQI (US)
17AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
30AQI (US)
30AQI (US)
27th June 2026
60AQI (US)
60AQI (US)
28th June 2026
54AQI (US)
54AQI (US)
29th June 2026
56AQI (US)
56AQI (US)
30th June 2026
48AQI (US)
48AQI (US)
1st July 2026
57AQI (US)
57AQI (US)
2nd July 2026
52AQI (US)
52AQI (US)
3rd July 2026
43AQI (US)
43AQI (US)
4th July 2026
53AQI (US)
53AQI (US)
5th July 2026
38AQI (US)
38AQI (US)
6th July 2026
39AQI (US)
39AQI (US)
7th July 2026
36AQI (US)
36AQI (US)
8th July 2026
29AQI (US)
29AQI (US)
9th July 2026
24AQI (US)
24AQI (US)
10th July 2026
27AQI (US)
27AQI (US)
11th July 2026
31AQI (US)
31AQI (US)
12th July 2026
38AQI (US)
38AQI (US)
13th July 2026
33AQI (US)
33AQI (US)
14th July 2026
26AQI (US)
26AQI (US)
15th July 2026
31AQI (US)
31AQI (US)
16th July 2026
67AQI (US)
67AQI (US)
17th July 2026
66AQI (US)
66AQI (US)
18th July 2026
30AQI (US)
30AQI (US)
19th July 2026
40AQI (US)
40AQI (US)
20th July 2026
35AQI (US)
35AQI (US)
21st July 2026
32AQI (US)
32AQI (US)
22nd July 2026
46AQI (US)
46AQI (US)
23rd July 2026
54AQI (US)
54AQI (US)
24th July 2026
53AQI (US)
53AQI (US)
25th July 2026
40AQI (US)
40AQI (US)
26th July 2026
29AQI (US)
29AQI (US)
27th July 2026
30AQI (US)
30AQI (US)
28th July 2026
45AQI (US)
45AQI (US)
29th July 2026
30AQI (US)
30AQI (US)
30th July 2026
29AQI (US)
29AQI (US)
31st July 2026
44AQI (US)
44AQI (US)
1st August 2026
72AQI (US)
72AQI (US)
2nd August 2026
54AQI (US)
54AQI (US)
3rd August 2026
56AQI (US)
56AQI (US)
4th August 2026
65AQI (US)
65AQI (US)
5th August 2026
54AQI (US)
54AQI (US)
6th August 2026
51AQI (US)
51AQI (US)
7th August 2026
66AQI (US)
66AQI (US)
8th August 2026
31AQI (US)
31AQI (US)
9th August 2026
17AQI (US)
17AQI (US)
10th August 2026
24AQI (US)
24AQI (US)
11th August 2026
26AQI (US)
26AQI (US)
12th August 2026
26AQI (US)
26AQI (US)
13th August 2026
26AQI (US)
26AQI (US)
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
56AQI (US)
72AQI (US)
83AQI (US)
62AQI (US)
54AQI (US)
44AQI (US)
40AQI (US)
44AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202658AQI (US)
14
15
2
11
10
7
5
18
8
10
16
2
15
14
1
18
12
24
7
6
7
103
99
20
Highest AQI (US) recorded in
March83AQI (US)
Lowest AQI (US) recorded in
July40AQI (US)
202561AQI (US)
1
24
5
1
1
26
1
3
19
9
4
26
7
24
5
25
21
10
19
12
24
6
22
9
8
19
3
11
19
1
126
219
19
1
Highest AQI (US) recorded in
March86AQI (US)
Lowest AQI (US) recorded in
September41AQI (US)
202461AQI (US)
9
16
6
9
15
4
1
6
22
1
2
4
24
2
10
21
6
23
1
22
8
1
10
21
25
5
16
15
8
22
4
27
129
219
15
3
Highest AQI (US) recorded in
January76AQI (US)
Lowest AQI (US) recorded in
September39AQI (US)
202366AQI (US)
7
16
7
1
2
19
6
1
2
17
12
4
21
4
1
4
27
6
24
14
15
2
15
16
19
11
14
17
12
15
2
11
15
5
110
213
38
3
Highest AQI (US) recorded in
February90AQI (US)
Lowest AQI (US) recorded in
September46AQI (US)
202265AQI (US)
1
22
5
2
2
14
5
1
8
16
7
7
21
2
10
20
1
15
15
7
18
1
1
22
5
2
17
11
3
6
19
4
1
10
19
2
106
181
31
4
Highest AQI (US) recorded in
January84AQI (US)
Lowest AQI (US) recorded in
August45AQI (US)
202164AQI (US)
8
19
3
4
15
7
2
5
17
6
2
1
8
21
1
10
18
1
1
1
7
23
15
16
19
12
27
3
17
14
9
17
2
2
9
16
6
138
191
26
6
2
1
Highest AQI (US) recorded in
March94AQI (US)
Lowest AQI (US) recorded in
September34AQI (US)
202061AQI (US)
3
9
1
3
17
1
4
14
5
24
1
18
13
19
12
21
9
13
16
2
7
15
8
8
14
8
1
101
143
21
1
Highest AQI (US) recorded in
December78AQI (US)
Lowest AQI (US) recorded in
September42AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
66AQI (US)Least Polluted Year Recorded
2026(Avg.)
58AQI (US)Gwacheon's annual 2026 AQI (US) (58) shows an average percentage change of -7.8% (improved AQI (US)) compared to previous years: 2020 (61), 2021 (64), 2022 (65), 2023 (66), 2024 (61), 2025 (61).
