Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Oeyeondo, Boryeong, Chungnam, South Korea Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Oeyeondo, Boryeong, Chungnam, South Korea

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
15th Aug 2024
74AQI
Lowest AQI recorded on
9th Aug 2026
12AQI

Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 29 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 15th Aug - 16th Aug 2026

Oeyeondo, Boryeong, Chungnam, South Korea

AQI
Day
Night
.

5 AM15th Aug 2026

7 PM

4 AM16th Aug 2026

Day time
Avg. Highest Time
5PM15th Aug

36AQI

Avg. Lowest Time
8AM15th Aug

25AQI

Night time
Avg. Highest Time
9PM15th Aug

34AQI

Avg. Lowest Time
2AM16th Aug

29AQI

In the last 24 hours,

Oeyeondo's AQI reached its highest point of 36 at 5 PM during the Day, while the lowest point, 25, was recorded at 8 AM during the Day between 15th Aug and 16th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Oeyeondo, Boryeong, Chungnam, South Korea

JulAug
18th - 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 - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026535 AMAQI
18th Jul 2026536 AMAQI
18th Jul 2026527 AMAQI
18th Jul 2026488 AMAQI
18th Jul 2026449 AMAQI
18th Jul 20264010 AMAQI
18th Jul 20263811 AMAQI
18th Jul 20263612 PMAQI
18th Jul 2026461 PMAQI
18th Jul 2026482 PMAQI
18th Jul 2026483 PMAQI
18th Jul 2026424 PMAQI
18th Jul 2026275 PMAQI
18th Jul 2026216 PMAQI
18th Jul 2026257 PMAQI
18th Jul 2026258 PMAQI
18th Jul 2026239 PMAQI
18th Jul 20262510 PMAQI
18th Jul 20262111 PMAQI
19th Jul 20262512 AMAQI
19th Jul 2026211 AMAQI
19th Jul 2026232 AMAQI
19th Jul 2026253 AMAQI
19th Jul 2026254 AMAQI

24°C24/25°C

19th Jul 2026215 AMAQI
19th Jul 2026146 AMAQI
19th Jul 2026127 AMAQI
19th Jul 2026218 AMAQI
19th Jul 2026219 AMAQI
19th Jul 20261910 AMAQI
19th Jul 20261911 AMAQI
19th Jul 20261012 PMAQI
19th Jul 202681 PMAQI
19th Jul 202682 PMAQI
19th Jul 202683 PMAQI
19th Jul 202684 PMAQI
19th Jul 2026235 PMAQI
19th Jul 2026216 PMAQI
19th Jul 2026257 PMAQI
19th Jul 2026338 PMAQI
19th Jul 2026319 PMAQI
19th Jul 20262910 PMAQI
19th Jul 20263311 PMAQI
20th Jul 20262512 AMAQI
20th Jul 2026251 AMAQI
20th Jul 2026292 AMAQI
20th Jul 2026333 AMAQI
20th Jul 2026294 AMAQI

24°C23/25°C

20th Jul 2026275 AMAQI
20th Jul 2026256 AMAQI
20th Jul 2026277 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026259 AMAQI
20th Jul 20262910 AMAQI
20th Jul 20262911 AMAQI
20th Jul 20263812 PMAQI
20th Jul 2026341 PMAQI
20th Jul 2026382 PMAQI
20th Jul 2026403 PMAQI
20th Jul 2026424 PMAQI
20th Jul 2026215 PMAQI
20th Jul 2026326 PMAQI
20th Jul 2026427 PMAQI
20th Jul 2026408 PMAQI
20th Jul 2026219 PMAQI
20th Jul 20263210 PMAQI
20th Jul 20262711 PMAQI
21st Jul 20262112 AMAQI
21st Jul 2026211 AMAQI
21st Jul 2026232 AMAQI
21st Jul 2026233 AMAQI
21st Jul 2026214 AMAQI

25°C22/28°C

21st Jul 2026215 AMAQI
21st Jul 2026236 AMAQI
21st Jul 2026257 AMAQI
21st Jul 2026258 AMAQI
21st Jul 2026259 AMAQI
21st Jul 20262510 AMAQI
21st Jul 20262511 AMAQI
21st Jul 2026251 PMAQI
21st Jul 2026252 PMAQI
21st Jul 2026253 PMAQI
21st Jul 2026254 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026747 PMAQI
21st Jul 2026258 PMAQI
21st Jul 2026259 PMAQI
21st Jul 20262310 PMAQI
21st Jul 20262511 PMAQI
22nd Jul 20262512 AMAQI
22nd Jul 2026251 AMAQI
22nd Jul 2026232 AMAQI
22nd Jul 2026253 AMAQI
22nd Jul 2026254 AMAQI

25°C24/26°C

22nd Jul 2026255 AMAQI
22nd Jul 2026256 AMAQI
22nd Jul 2026277 AMAQI
22nd Jul 2026278 AMAQI
22nd Jul 2026259 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20262911 AMAQI
22nd Jul 20262912 PMAQI
22nd Jul 2026271 PMAQI
22nd Jul 2026292 PMAQI
22nd Jul 2026293 PMAQI
22nd Jul 2026294 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026296 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026298 PMAQI
22nd Jul 2026319 PMAQI
22nd Jul 20262710 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20262512 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026252 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026254 AMAQI

26°C24/28°C

23rd Jul 2026275 AMAQI
23rd Jul 2026256 AMAQI
23rd Jul 2026297 AMAQI
23rd Jul 2026298 AMAQI
23rd Jul 2026319 AMAQI
23rd Jul 20263310 AMAQI
23rd Jul 20263611 AMAQI
23rd Jul 20263612 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026382 PMAQI
23rd Jul 2026423 PMAQI
23rd Jul 2026444 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026406 PMAQI
23rd Jul 2026447 PMAQI
23rd Jul 2026428 PMAQI
23rd Jul 2026429 PMAQI
23rd Jul 20263810 PMAQI
23rd Jul 20263811 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026381 AMAQI
24th Jul 2026362 AMAQI
24th Jul 2026313 AMAQI
24th Jul 2026364 AMAQI

26°C24/27°C

24th Jul 2026315 AMAQI
24th Jul 2026336 AMAQI
24th Jul 2026317 AMAQI
24th Jul 2026338 AMAQI
24th Jul 2026319 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263111 AMAQI
24th Jul 20262912 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026292 PMAQI
24th Jul 2026293 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026219 PMAQI
24th Jul 20262510 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20262112 AMAQI
25th Jul 2026231 AMAQI
25th Jul 2026252 AMAQI
25th Jul 2026253 AMAQI
25th Jul 2026274 AMAQI

26°C24/29°C

25th Jul 2026255 AMAQI
25th Jul 2026256 AMAQI
25th Jul 2026277 AMAQI
25th Jul 2026258 AMAQI
25th Jul 2026299 AMAQI
25th Jul 20263110 AMAQI
25th Jul 20262911 AMAQI
25th Jul 20263112 PMAQI
25th Jul 2026251 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026333 PMAQI
25th Jul 2026274 PMAQI
25th Jul 2026295 PMAQI
25th Jul 2026296 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026279 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20262911 PMAQI
26th Jul 20262712 AMAQI
26th Jul 2026251 AMAQI
26th Jul 2026272 AMAQI
26th Jul 2026313 AMAQI
26th Jul 2026254 AMAQI

26°C24/28°C

26th Jul 2026275 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026297 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262912 PMAQI
26th Jul 2026291 PMAQI
26th Jul 2026212 PMAQI
26th Jul 2026293 PMAQI
26th Jul 2026274 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026259 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026272 AMAQI
27th Jul 2026273 AMAQI
27th Jul 2026314 AMAQI

26°C24/29°C

27th Jul 2026295 AMAQI
27th Jul 2026296 AMAQI
27th Jul 2026337 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026259 AMAQI
27th Jul 20262310 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262912 PMAQI
27th Jul 2026311 PMAQI
27th Jul 2026272 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026334 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026259 PMAQI
27th Jul 20262510 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026272 AMAQI
28th Jul 2026313 AMAQI
28th Jul 2026314 AMAQI

27°C25/29°C

28th Jul 2026275 AMAQI
28th Jul 2026276 AMAQI
28th Jul 2026277 AMAQI
28th Jul 2026338 AMAQI
28th Jul 2026349 AMAQI
28th Jul 20262910 AMAQI
28th Jul 20262711 AMAQI
28th Jul 20263112 PMAQI
28th Jul 2026321 PMAQI
28th Jul 2026362 PMAQI
28th Jul 2026293 PMAQI
28th Jul 2026294 PMAQI
28th Jul 2026295 PMAQI
28th Jul 2026256 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026258 PMAQI
28th Jul 2026239 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262311 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026232 AMAQI
29th Jul 2026193 AMAQI
29th Jul 2026194 AMAQI

27°C25/29°C

29th Jul 2026215 AMAQI
29th Jul 2026196 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026178 AMAQI
29th Jul 2026179 AMAQI
29th Jul 20261710 AMAQI
29th Jul 20261911 AMAQI
29th Jul 20262112 PMAQI
29th Jul 2026191 PMAQI
29th Jul 2026192 PMAQI
29th Jul 2026193 PMAQI
29th Jul 2026194 PMAQI
29th Jul 2026195 PMAQI
29th Jul 2026196 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20261910 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20261712 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026253 AMAQI
30th Jul 2026254 AMAQI

26°C24/29°C

30th Jul 2026255 AMAQI
30th Jul 2026256 AMAQI
30th Jul 2026257 AMAQI
30th Jul 2026258 AMAQI
30th Jul 2026239 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20262911 AMAQI
30th Jul 20262712 PMAQI
30th Jul 2026271 PMAQI
30th Jul 2026252 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026294 PMAQI
30th Jul 2026275 PMAQI
30th Jul 2026316 PMAQI
30th Jul 2026297 PMAQI
30th Jul 2026298 PMAQI
30th Jul 2026279 PMAQI
30th Jul 20263310 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20262912 AMAQI
31st Jul 2026291 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026293 AMAQI
31st Jul 2026314 AMAQI

26°C24/29°C

31st Jul 2026295 AMAQI
31st Jul 2026236 AMAQI
31st Jul 2026257 AMAQI
31st Jul 2026298 AMAQI
31st Jul 2026319 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20262911 AMAQI
31st Jul 20262912 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026272 PMAQI
31st Jul 2026253 PMAQI
31st Jul 2026274 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026256 PMAQI
31st Jul 2026237 PMAQI
31st Jul 2026258 PMAQI
31st Jul 2026239 PMAQI
31st Jul 20262310 PMAQI
31st Jul 20262911 PMAQI
1st Aug 20263312 AMAQI
1st Aug 2026361 AMAQI
1st Aug 2026382 AMAQI
1st Aug 2026463 AMAQI
1st Aug 2026444 AMAQI

27°C23/30°C

1st Aug 2026565 AMAQI
1st Aug 2026556 AMAQI
1st Aug 2026537 AMAQI
1st Aug 2026708 AMAQI
1st Aug 2026749 AMAQI
1st Aug 20267810 AMAQI
1st Aug 20266611 AMAQI
1st Aug 20265812 PMAQI
1st Aug 2026531 PMAQI
1st Aug 2026532 PMAQI
1st Aug 2026503 PMAQI
1st Aug 2026504 PMAQI
1st Aug 2026485 PMAQI
1st Aug 2026466 PMAQI
1st Aug 2026277 PMAQI
1st Aug 2026298 PMAQI
1st Aug 2026299 PMAQI
1st Aug 20262510 PMAQI
1st Aug 20262311 PMAQI
2nd Aug 20261812 AMAQI
2nd Aug 2026141 AMAQI
2nd Aug 2026122 AMAQI
2nd Aug 202683 AMAQI
2nd Aug 2026104 AMAQI

28°C25/30°C

2nd Aug 2026105 AMAQI
2nd Aug 2026176 AMAQI
2nd Aug 2026177 AMAQI
2nd Aug 2026128 AMAQI
2nd Aug 2026219 AMAQI
2nd Aug 20261910 AMAQI
2nd Aug 20261211 AMAQI
2nd Aug 20261212 PMAQI
2nd Aug 2026121 PMAQI
2nd Aug 2026102 PMAQI
2nd Aug 2026193 PMAQI
2nd Aug 2026174 PMAQI
2nd Aug 2026175 PMAQI
2nd Aug 2026216 PMAQI
2nd Aug 2026197 PMAQI
2nd Aug 2026128 PMAQI
2nd Aug 2026129 PMAQI
2nd Aug 20261410 PMAQI
2nd Aug 20261211 PMAQI
3rd Aug 2026812 AMAQI
3rd Aug 202681 AMAQI
3rd Aug 2026102 AMAQI
3rd Aug 2026143 AMAQI
3rd Aug 2026124 AMAQI

28°C25/31°C

3rd Aug 2026105 AMAQI
3rd Aug 2026126 AMAQI
3rd Aug 2026277 AMAQI
3rd Aug 2026528 AMAQI
3rd Aug 2026529 AMAQI
3rd Aug 20265110 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20263312 PMAQI
3rd Aug 2026331 PMAQI
3rd Aug 2026362 PMAQI
3rd Aug 2026403 PMAQI
3rd Aug 2026384 PMAQI
3rd Aug 2026385 PMAQI
3rd Aug 2026366 PMAQI
3rd Aug 2026367 PMAQI
3rd Aug 2026368 PMAQI
3rd Aug 2026339 PMAQI
3rd Aug 20263310 PMAQI
3rd Aug 20263311 PMAQI
4th Aug 20262912 AMAQI
4th Aug 2026311 AMAQI
4th Aug 2026312 AMAQI
4th Aug 2026403 AMAQI
4th Aug 2026524 AMAQI

28°C24/32°C

4th Aug 2026535 AMAQI
4th Aug 2026526 AMAQI
4th Aug 2026567 AMAQI
4th Aug 2026648 AMAQI
4th Aug 2026499 AMAQI
4th Aug 20265410 AMAQI
4th Aug 20267111 AMAQI
4th Aug 20266712 PMAQI
4th Aug 2026681 PMAQI
4th Aug 2026672 PMAQI
4th Aug 2026643 PMAQI
4th Aug 2026544 PMAQI
4th Aug 2026535 PMAQI
4th Aug 2026606 PMAQI
4th Aug 2026607 PMAQI
4th Aug 2026588 PMAQI
4th Aug 2026629 PMAQI
4th Aug 20265810 PMAQI
4th Aug 20265711 PMAQI
5th Aug 20266012 AMAQI
5th Aug 2026591 AMAQI
5th Aug 2026642 AMAQI
5th Aug 2026643 AMAQI
5th Aug 2026684 AMAQI

28°C25/32°C

5th Aug 2026635 AMAQI
5th Aug 2026166 AMAQI
5th Aug 2026147 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026529 AMAQI
5th Aug 20265410 AMAQI
5th Aug 20266211 AMAQI
5th Aug 20266812 PMAQI
5th Aug 2026801 PMAQI
5th Aug 2026692 PMAQI
5th Aug 2026663 PMAQI
5th Aug 2026834 PMAQI
5th Aug 2026705 PMAQI
5th Aug 2026716 PMAQI
5th Aug 2026727 PMAQI
5th Aug 2026838 PMAQI
5th Aug 2026809 PMAQI
5th Aug 20268010 PMAQI
5th Aug 20266211 PMAQI
6th Aug 20265512 AMAQI
6th Aug 2026531 AMAQI
6th Aug 2026692 AMAQI
6th Aug 2026643 AMAQI
6th Aug 2026634 AMAQI

29°C25/33°C

6th Aug 2026855 AMAQI
6th Aug 2026656 AMAQI
6th Aug 2026717 AMAQI
6th Aug 2026718 AMAQI
6th Aug 2026729 AMAQI
6th Aug 20266510 AMAQI
6th Aug 20266211 AMAQI
6th Aug 20265712 PMAQI
6th Aug 2026591 PMAQI
6th Aug 2026562 PMAQI
6th Aug 2026563 PMAQI
6th Aug 2026544 PMAQI
6th Aug 2026535 PMAQI
6th Aug 2026516 PMAQI
6th Aug 2026607 PMAQI
6th Aug 2026708 PMAQI
6th Aug 2026699 PMAQI
6th Aug 20266810 PMAQI
6th Aug 20267211 PMAQI
7th Aug 20267812 AMAQI
7th Aug 2026691 AMAQI
7th Aug 2026662 AMAQI
7th Aug 2026683 AMAQI
7th Aug 2026804 AMAQI

29°C26/33°C

7th Aug 2026765 AMAQI
7th Aug 2026666 AMAQI
7th Aug 2026707 AMAQI
7th Aug 2026678 AMAQI
7th Aug 2026659 AMAQI
7th Aug 20266410 AMAQI
7th Aug 20266811 AMAQI
7th Aug 20266712 PMAQI
7th Aug 2026701 PMAQI
7th Aug 2026652 PMAQI
7th Aug 2026713 PMAQI
7th Aug 2026724 PMAQI
7th Aug 2026725 PMAQI
7th Aug 2026856 PMAQI
7th Aug 2026827 PMAQI
7th Aug 2026908 PMAQI
7th Aug 2026869 PMAQI
7th Aug 20267810 PMAQI
7th Aug 20266511 PMAQI
8th Aug 20265412 AMAQI
8th Aug 2026591 AMAQI
8th Aug 2026622 AMAQI
8th Aug 2026673 AMAQI
8th Aug 2026424 AMAQI

29°C25/34°C

8th Aug 2026425 AMAQI
8th Aug 2026256 AMAQI
8th Aug 2026317 AMAQI
8th Aug 2026278 AMAQI
8th Aug 2026449 AMAQI
8th Aug 20264810 AMAQI
8th Aug 20262911 AMAQI
8th Aug 20265112 PMAQI
8th Aug 2026531 PMAQI
8th Aug 2026492 PMAQI
8th Aug 2026383 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026235 PMAQI
8th Aug 2026276 PMAQI
8th Aug 2026337 PMAQI
8th Aug 2026228 PMAQI
8th Aug 2026209 PMAQI
8th Aug 20261410 PMAQI
8th Aug 2026811 PMAQI
9th Aug 2026812 AMAQI
9th Aug 202681 AMAQI
9th Aug 2026102 AMAQI
9th Aug 202683 AMAQI
9th Aug 2026124 AMAQI

29°C26/34°C

9th Aug 2026125 AMAQI
9th Aug 2026126 AMAQI
9th Aug 2026127 AMAQI
9th Aug 2026128 AMAQI
9th Aug 2026109 AMAQI
9th Aug 20261010 AMAQI
9th Aug 20261011 AMAQI
9th Aug 2026812 PMAQI
9th Aug 2026131 PMAQI
9th Aug 2026142 PMAQI
9th Aug 2026213 PMAQI
9th Aug 2026124 PMAQI
9th Aug 2026195 PMAQI
9th Aug 2026146 PMAQI
9th Aug 2026157 PMAQI
9th Aug 202698 PMAQI
9th Aug 2026119 PMAQI
9th Aug 20261210 PMAQI
9th Aug 20261011 PMAQI
10th Aug 2026812 AMAQI
10th Aug 2026331 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026273 AMAQI
10th Aug 2026254 AMAQI

27°C25/30°C

10th Aug 2026295 AMAQI
10th Aug 2026296 AMAQI
10th Aug 2026277 AMAQI
10th Aug 2026258 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262510 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20263312 PMAQI
10th Aug 2026311 PMAQI
10th Aug 2026312 PMAQI
10th Aug 2026333 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026335 PMAQI
10th Aug 2026366 PMAQI
10th Aug 2026387 PMAQI
10th Aug 2026318 PMAQI
10th Aug 2026319 PMAQI
10th Aug 20262510 PMAQI
10th Aug 20263411 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026461 AMAQI
11th Aug 2026292 AMAQI
11th Aug 2026273 AMAQI
11th Aug 2026254 AMAQI

27°C24/30°C

11th Aug 2026275 AMAQI
11th Aug 2026336 AMAQI
11th Aug 2026387 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026319 AMAQI
11th Aug 20263610 AMAQI
11th Aug 20264211 AMAQI
11th Aug 20263812 PMAQI
11th Aug 2026361 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026333 PMAQI
11th Aug 2026294 PMAQI
11th Aug 2026275 PMAQI
11th Aug 2026276 PMAQI
11th Aug 2026257 PMAQI
11th Aug 2026388 PMAQI
11th Aug 2026319 PMAQI
11th Aug 20262910 PMAQI
11th Aug 20263611 PMAQI
12th Aug 20263812 AMAQI
12th Aug 2026361 AMAQI
12th Aug 2026402 AMAQI
12th Aug 2026343 AMAQI
12th Aug 2026294 AMAQI

26°C23/30°C

12th Aug 2026315 AMAQI
12th Aug 2026386 AMAQI
12th Aug 2026367 AMAQI
12th Aug 2026338 AMAQI
12th Aug 2026389 AMAQI
12th Aug 20263810 AMAQI
12th Aug 20263211 AMAQI
12th Aug 20262512 PMAQI
12th Aug 2026271 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026253 PMAQI
12th Aug 2026254 PMAQI
12th Aug 2026255 PMAQI
12th Aug 2026386 PMAQI
12th Aug 2026497 PMAQI
12th Aug 2026528 PMAQI
12th Aug 2026259 PMAQI
12th Aug 20262510 PMAQI
12th Aug 20262911 PMAQI
13th Aug 20262712 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026292 AMAQI
13th Aug 2026333 AMAQI
13th Aug 2026294 AMAQI

24°C19/29°C

13th Aug 2026335 AMAQI
13th Aug 2026336 AMAQI
13th Aug 2026277 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026339 AMAQI
13th Aug 20262910 AMAQI
13th Aug 20263311 AMAQI
13th Aug 20262912 PMAQI
13th Aug 2026291 PMAQI
13th Aug 2026252 PMAQI
13th Aug 2026253 PMAQI
13th Aug 2026424 PMAQI
13th Aug 2026485 PMAQI
13th Aug 2026336 PMAQI
13th Aug 2026317 PMAQI
13th Aug 2026258 PMAQI
13th Aug 2026369 PMAQI
13th Aug 20264210 PMAQI
13th Aug 20264611 PMAQI
14th Aug 20264212 AMAQI
14th Aug 2026331 AMAQI
14th Aug 2026362 AMAQI
14th Aug 2026343 AMAQI
14th Aug 2026344 AMAQI

25°C21/29°C

14th Aug 2026445 AMAQI
14th Aug 2026336 AMAQI
14th Aug 2026337 AMAQI
14th Aug 2026318 AMAQI
14th Aug 2026369 AMAQI
14th Aug 20263210 AMAQI
14th Aug 20263211 AMAQI
14th Aug 20263812 PMAQI
14th Aug 2026331 PMAQI
14th Aug 2026322 PMAQI
14th Aug 2026563 PMAQI
14th Aug 2026534 PMAQI
14th Aug 2026215 PMAQI
14th Aug 2026216 PMAQI
14th Aug 2026257 PMAQI
14th Aug 2026218 PMAQI
14th Aug 2026369 PMAQI
14th Aug 20262110 PMAQI
14th Aug 20262111 PMAQI
15th Aug 20262312 AMAQI
15th Aug 2026251 AMAQI
15th Aug 2026212 AMAQI
15th Aug 2026213 AMAQI
15th Aug 2026254 AMAQI

25°C23/28°C

15th Aug 2026255 AMAQI
15th Aug 2026256 AMAQI
15th Aug 2026257 AMAQI
15th Aug 2026258 AMAQI
15th Aug 2026279 AMAQI
15th Aug 20262710 AMAQI
15th Aug 20263111 AMAQI
15th Aug 20263112 PMAQI
15th Aug 2026291 PMAQI
15th Aug 2026292 PMAQI
15th Aug 2026313 PMAQI
15th Aug 2026334 PMAQI
15th Aug 2026365 PMAQI
15th Aug 2026366 PMAQI
15th Aug 2026337 PMAQI
15th Aug 2026338 PMAQI
15th Aug 2026349 PMAQI
15th Aug 20263110 PMAQI
15th Aug 20262911 PMAQI
16th Aug 20263112 AMAQI
16th Aug 2026291 AMAQI
16th Aug 2026292 AMAQI
16th Aug 2026313 AMAQI
16th Aug 2026314 AMAQI

26°C24/29°C

16th Aug 2026295 AMAQI
5 AM
16th Aug 2026256 AMAQI
16th Aug 2026257 AMAQI
16th Aug 2026258 AMAQI
16th Aug 2026259 AMAQI
16th Aug 20262510 AMAQI
16th Aug 20262311 AMAQI
16th Aug 20262112 PMAQI
12 PM
16th Aug 2026251 PMAQI
16th Aug 2026252 PMAQI
16th Aug 2026253 PMAQI
16th Aug 2026234 PMAQI
16th Aug 2026215 PMAQI
16th Aug 2026326 PMAQI
16th Aug 2026277 PMAQI
7 PM
16th Aug 2026278 PMAQI
16th Aug 2026299 PMAQI
16th Aug 20262710 PMAQI
16th Aug 20262911 PMAQI
12 AM
4 AM

25°C22/28°C

Day time
Avg. Highest Time
7 PM

36AQI

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

30AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 36), while the lowest AQI was between 6 AM to 6 AM (Avg. 30).
Night time
Avg. Highest Time
3 AM - 9 PM

33AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 1 AM

31AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 9 PM (Avg. 33), while the lowest AQI was between 12 AM to 1 AM (Avg. 31).

2026 Days Vs Air Quality

Oeyeondo, Boryeong, Chungnam, South Korea

2026

55%

124

40%

89

5%

11

Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)

Good
124 Days
Moderate
89 Days
Poor
11 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 55%

Health Risk Level:

Considerable

In 2026, 55% of 228 days were within WHO’s safe air quality limits, and 45% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.

Annual Air Quality Insights

Oeyeondo, Boryeong, 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
25AQI (US)
2nd January 2026
31AQI (US)
3rd January 2026
47AQI (US)
4th January 2026
90AQI (US)
5th January 2026
34AQI (US)
6th January 2026
34AQI (US)
7th January 2026
63AQI (US)
8th January 2026
24AQI (US)
9th January 2026
28AQI (US)
10th January 2026
72AQI (US)
11th January 2026
29AQI (US)
12th January 2026
40AQI (US)
13th January 2026
44AQI (US)
14th January 2026
23AQI (US)
15th January 2026
96AQI (US)
16th January 2026
118AQI (US)
17th January 2026
74AQI (US)
18th January 2026
100AQI (US)
19th January 2026
53AQI (US)
20th January 2026
25AQI (US)
21st January 2026
30AQI (US)
22nd January 2026
34AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
52AQI (US)
25th January 2026
24AQI (US)
26th January 2026
34AQI (US)
27th January 2026
51AQI (US)
28th January 2026
28AQI (US)
29th January 2026
46AQI (US)
30th January 2026
33AQI (US)
31st January 2026
53AQI (US)
1st February 2026
79AQI (US)
2nd February 2026
62AQI (US)
3rd February 2026
59AQI (US)
4th February 2026
94AQI (US)
5th February 2026
99AQI (US)
6th February 2026
58AQI (US)
7th February 2026
33AQI (US)
8th February 2026
42AQI (US)
9th February 2026
43AQI (US)
10th February 2026
64AQI (US)
11th February 2026
94AQI (US)
12th February 2026
68AQI (US)
13th February 2026
85AQI (US)
14th February 2026
131AQI (US)
15th February 2026
82AQI (US)
16th February 2026
41AQI (US)
17th February 2026
31AQI (US)
18th February 2026
65AQI (US)
19th February 2026
22AQI (US)
20th February 2026
61AQI (US)
21st February 2026
99AQI (US)
22nd February 2026
61AQI (US)
23rd February 2026
31AQI (US)
24th February 2026
42AQI (US)
25th February 2026
62AQI (US)
26th February 2026
44AQI (US)
27th February 2026
51AQI (US)
28th February 2026
70AQI (US)
1st March 2026
55AQI (US)
2nd March 2026
19AQI (US)
3rd March 2026
20AQI (US)
4th March 2026
49AQI (US)
5th March 2026
87AQI (US)
6th March 2026
58AQI (US)
7th March 2026
48AQI (US)
8th March 2026
46AQI (US)
9th March 2026
84AQI (US)
10th March 2026
52AQI (US)
11th March 2026
52AQI (US)
12th March 2026
94AQI (US)
13th March 2026
75AQI (US)
14th March 2026
75AQI (US)
15th March 2026
76AQI (US)
16th March 2026
133AQI (US)
17th March 2026
146AQI (US)
18th March 2026
102AQI (US)
19th March 2026
46AQI (US)
20th March 2026
34AQI (US)
21st March 2026
82AQI (US)
22nd March 2026
101AQI (US)
23rd March 2026
100AQI (US)
24th March 2026
124AQI (US)
25th March 2026
85AQI (US)
26th March 2026
56AQI (US)
27th March 2026
55AQI (US)
28th March 2026
78AQI (US)
29th March 2026
80AQI (US)
30th March 2026
74AQI (US)
31st March 2026
105AQI (US)
1st April 2026
64AQI (US)
2nd April 2026
104AQI (US)
3rd April 2026
121AQI (US)
4th April 2026
76AQI (US)
5th April 2026
70AQI (US)
6th April 2026
58AQI (US)
7th April 2026
32AQI (US)
8th April 2026
30AQI (US)
9th April 2026
32AQI (US)
10th April 2026
39AQI (US)
11th April 2026
55AQI (US)
12th April 2026
42AQI (US)
13th April 2026
64AQI (US)
14th April 2026
74AQI (US)
15th April 2026
87AQI (US)
16th April 2026
98AQI (US)
17th April 2026
18th April 2026
53AQI (US)
19th April 2026
62AQI (US)
20th April 2026
61AQI (US)
21st April 2026
76AQI (US)
22nd April 2026
23rd April 2026
49AQI (US)
24th April 2026
45AQI (US)
25th April 2026
72AQI (US)
26th April 2026
57AQI (US)
27th April 2026
45AQI (US)
28th April 2026
42AQI (US)
29th April 2026
49AQI (US)
30th April 2026
70AQI (US)
1st May 2026
84AQI (US)
2nd May 2026
116AQI (US)
3rd May 2026
58AQI (US)
4th May 2026
33AQI (US)
5th May 2026
32AQI (US)
6th May 2026
28AQI (US)
7th May 2026
30AQI (US)
8th May 2026
34AQI (US)
9th May 2026
10th May 2026
33AQI (US)
11th May 2026
30AQI (US)
12th May 2026
21AQI (US)
13th May 2026
49AQI (US)
14th May 2026
45AQI (US)
15th May 2026
48AQI (US)
16th May 2026
76AQI (US)
17th May 2026
65AQI (US)
18th May 2026
55AQI (US)
19th May 2026
52AQI (US)
20th May 2026
63AQI (US)
21st May 2026
67AQI (US)
22nd May 2026
77AQI (US)
23rd May 2026
72AQI (US)
24th May 2026
71AQI (US)
25th May 2026
64AQI (US)
26th May 2026
46AQI (US)
27th May 2026
32AQI (US)
28th May 2026
26AQI (US)
29th May 2026
58AQI (US)
30th May 2026
49AQI (US)
31st May 2026
55AQI (US)
1st June 2026
54AQI (US)
2nd June 2026
75AQI (US)
3rd June 2026
62AQI (US)
4th June 2026
57AQI (US)
5th June 2026
23AQI (US)
6th June 2026
35AQI (US)
7th June 2026
49AQI (US)
8th June 2026
38AQI (US)
9th June 2026
26AQI (US)
10th June 2026
26AQI (US)
11th June 2026
39AQI (US)
12th June 2026
58AQI (US)
13th June 2026
52AQI (US)
14th June 2026
37AQI (US)
15th June 2026
53AQI (US)
16th June 2026
66AQI (US)
17th June 2026
50AQI (US)
18th June 2026
37AQI (US)
19th June 2026
48AQI (US)
20th June 2026
13AQI (US)
21st June 2026
14AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
41AQI (US)
24th June 2026
13AQI (US)
25th June 2026
18AQI (US)
26th June 2026
29AQI (US)
27th June 2026
48AQI (US)
28th June 2026
37AQI (US)
29th June 2026
32AQI (US)
30th June 2026
24AQI (US)
1st July 2026
38AQI (US)
2nd July 2026
49AQI (US)
3rd July 2026
18AQI (US)
4th July 2026
26AQI (US)
5th July 2026
22AQI (US)
6th July 2026
23AQI (US)
7th July 2026
24AQI (US)
8th July 2026
23AQI (US)
9th July 2026
22AQI (US)
10th July 2026
27AQI (US)
11th July 2026
33AQI (US)
12th July 2026
38AQI (US)
13th July 2026
30AQI (US)
14th July 2026
27AQI (US)
15th July 2026
27AQI (US)
16th July 2026
26AQI (US)
17th July 2026
47AQI (US)
18th July 2026
38AQI (US)
19th July 2026
20AQI (US)
20th July 2026
31AQI (US)
21st July 2026
26AQI (US)
22nd July 2026
27AQI (US)
23rd July 2026
34AQI (US)
24th July 2026
29AQI (US)
25th July 2026
27AQI (US)
26th July 2026
26AQI (US)
27th July 2026
27AQI (US)
28th July 2026
28AQI (US)
29th July 2026
20AQI (US)
30th July 2026
27AQI (US)
31st July 2026
27AQI (US)
1st August 2026
48AQI (US)
2nd August 2026
14AQI (US)
3rd August 2026
30AQI (US)
4th August 2026
55AQI (US)
5th August 2026
62AQI (US)
6th August 2026
63AQI (US)
7th August 2026
72AQI (US)
8th August 2026
37AQI (US)
9th August 2026
12AQI (US)
10th August 2026
29AQI (US)
11th August 2026
33AQI (US)
12th August 2026
33AQI (US)
13th August 2026
32AQI (US)
14th August 2026
33AQI (US)
15th August 2026
29AQI (US)
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

48AQI (US)

63AQI (US)

74AQI (US)

62AQI (US)

52AQI (US)

39AQI (US)

29AQI (US)

39AQI (US)

No. of days

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

202651AQI (US)

19
11
1
9
18
1
7
18
6
10
16
2
15
14
1
22
8
31
11
4
124
89
11

Highest AQI (US) recorded in

March

74AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

202559AQI (US)

1
26
4
2
25
1
3
23
5
6
24
8
23
7
23
11
20
26
5
28
2
16
15
7
19
4
13
16
2
128
221
16

Highest AQI (US) recorded in

March

81AQI (US)

Lowest AQI (US) recorded in

September

41AQI (US)

202461AQI (US)

9
18
4
7
14
8
2
24
3
2
4
21
5
13
18
15
15
26
5
20
11
21
9
5
25
1
4
24
2
1
30
127
214
23
2

Highest AQI (US) recorded in

March

78AQI (US)

Lowest AQI (US) recorded in

July

37AQI (US)

202367AQI (US)

12
13
4
1
1
18
7
2
3
19
8
1
1
20
5
1
2
1
8
22
1
15
15
15
10
4
2
16
15
24
6
7
22
2
3
25
1
5
20
6
110
205
38
7
2
1

Highest AQI (US) recorded in

April

98AQI (US)

Lowest AQI (US) recorded in

September

37AQI (US)

202272AQI (US)

7
15
6
1
1
15
5
1
6
21
4
4
23
3
4
27
18
12
11
11
1
6
19
3
23
8
2
15
10
3
9
19
3
69
200
42
5

Highest AQI (US) recorded in

November

99AQI (US)

Lowest AQI (US) recorded in

August

44AQI (US)

202162AQI (US)

3
3
24
2
1
1
7
22
1
14
16
1
12
16
21
9
15
16
9
16
4
1
12
14
4
1
93
136
12
2
1
1

Highest AQI (US) recorded in

April

85AQI (US)

Lowest AQI (US) recorded in

September

44AQI (US)

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
72AQI (US)
Least Polluted Year Recorded
2026(Avg.)
51AQI (US)

Oeyeondo's annual 2026 AQI (US) (51) shows an average percentage change of -20.1% (improved AQI (US)) compared to previous years: 2021 (62), 2022 (72), 2023 (67), 2024 (61), 2025 (59).