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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Kotoshibacho, Ube, Yamaguchi, Japan 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

Kotoshibacho, Ube, Yamaguchi, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Aug 2024
55AQI
Lowest AQI recorded on
29th Aug 2024
13AQI

Same Day Analysis (17th 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: 16th Aug - 17th Aug 2026

Kotoshibacho, Ube, Yamaguchi, Japan

AQI
Day
Night
.

5 AM16th Aug 2026

7 PM

4 AM17th Aug 2026

Day time
Avg. Highest Time
7AM16th Aug

25AQI

Avg. Lowest Time
4PM16th Aug

21AQI

Night time
Avg. Highest Time
9PM16th Aug

25AQI

Avg. Lowest Time
12AM17th Aug

21AQI

In the last 24 hours,

Kotoshibacho's AQI reached its highest point of 25 at 7 AM during the Day, while the lowest point, 21, was recorded at 12 AM during the Night between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Kotoshibacho, Ube, Yamaguchi, Japan

JulAug
19th - 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 - 17th17th
Day
Night
19th Jul 2026695 AMAQI
19th Jul 2026696 AMAQI
19th Jul 2026647 AMAQI
19th Jul 2026648 AMAQI
19th Jul 2026599 AMAQI
19th Jul 20265910 AMAQI
19th Jul 20266011 AMAQI
19th Jul 20266412 PMAQI
19th Jul 2026651 PMAQI
19th Jul 2026642 PMAQI
19th Jul 2026623 PMAQI
19th Jul 2026654 PMAQI
19th Jul 2026695 PMAQI
19th Jul 2026656 PMAQI
19th Jul 2026667 PMAQI
19th Jul 2026628 PMAQI
19th Jul 2026599 PMAQI
19th Jul 20266210 PMAQI
19th Jul 20265911 PMAQI
20th Jul 20266012 AMAQI
20th Jul 2026621 AMAQI
20th Jul 2026622 AMAQI
20th Jul 2026593 AMAQI
20th Jul 2026584 AMAQI

27°C25/30°C

20th Jul 2026555 AMAQI
20th Jul 2026546 AMAQI
20th Jul 2026547 AMAQI
20th Jul 2026538 AMAQI
20th Jul 2026549 AMAQI
20th Jul 20265510 AMAQI
20th Jul 20265211 AMAQI
20th Jul 20265312 PMAQI
20th Jul 2026551 PMAQI
20th Jul 2026562 PMAQI
20th Jul 2026563 PMAQI
20th Jul 2026544 PMAQI
20th Jul 2026555 PMAQI
20th Jul 2026566 PMAQI
20th Jul 2026547 PMAQI
20th Jul 2026508 PMAQI
20th Jul 2026489 PMAQI
20th Jul 20264010 PMAQI
20th Jul 20263811 PMAQI
21st Jul 20263412 AMAQI
21st Jul 2026311 AMAQI
21st Jul 2026342 AMAQI
21st Jul 2026293 AMAQI
21st Jul 2026314 AMAQI

27°C25/30°C

21st Jul 2026335 AMAQI
21st Jul 2026336 AMAQI
21st Jul 2026317 AMAQI
21st Jul 2026338 AMAQI
21st Jul 2026429 AMAQI
21st Jul 20264610 AMAQI
21st Jul 20264811 AMAQI
21st Jul 2026691 PMAQI
21st Jul 2026712 PMAQI
21st Jul 2026723 PMAQI
21st Jul 2026694 PMAQI
21st Jul 2026665 PMAQI
21st Jul 2026706 PMAQI
21st Jul 2026977 PMAQI
21st Jul 2026688 PMAQI
21st Jul 2026629 PMAQI
21st Jul 20265610 PMAQI
21st Jul 20265411 PMAQI
22nd Jul 20265312 AMAQI
22nd Jul 2026531 AMAQI
22nd Jul 2026622 AMAQI
22nd Jul 2026673 AMAQI
22nd Jul 2026534 AMAQI

28°C25/31°C

22nd Jul 2026315 AMAQI
22nd Jul 2026276 AMAQI
22nd Jul 2026297 AMAQI
22nd Jul 2026338 AMAQI
22nd Jul 2026319 AMAQI
22nd Jul 20263810 AMAQI
22nd Jul 20262511 AMAQI
22nd Jul 20263112 PMAQI
22nd Jul 2026291 PMAQI
22nd Jul 2026332 PMAQI
22nd Jul 2026233 PMAQI
22nd Jul 2026274 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026296 PMAQI
22nd Jul 2026367 PMAQI
22nd Jul 2026288 PMAQI
22nd Jul 2026279 PMAQI
22nd Jul 20263110 PMAQI
22nd Jul 20262711 PMAQI
23rd Jul 20262912 AMAQI
23rd Jul 2026291 AMAQI
23rd Jul 2026272 AMAQI
23rd Jul 2026273 AMAQI
23rd Jul 2026274 AMAQI

28°C25/32°C

23rd Jul 2026295 AMAQI
23rd Jul 2026296 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026238 AMAQI
23rd Jul 2026239 AMAQI
23rd Jul 20262210 AMAQI
23rd Jul 20262711 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026311 PMAQI
23rd Jul 2026292 PMAQI
23rd Jul 2026293 PMAQI
23rd Jul 2026314 PMAQI
23rd Jul 2026215 PMAQI
23rd Jul 2026226 PMAQI
23rd Jul 2026257 PMAQI
23rd Jul 2026298 PMAQI
23rd Jul 2026279 PMAQI
23rd Jul 20262510 PMAQI
23rd Jul 20262911 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026311 AMAQI
24th Jul 2026312 AMAQI
24th Jul 2026293 AMAQI
24th Jul 2026294 AMAQI

28°C25/32°C

24th Jul 2026295 AMAQI
24th Jul 2026316 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026278 AMAQI
24th Jul 2026339 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263111 AMAQI
24th Jul 20263412 PMAQI
24th Jul 2026331 PMAQI
24th Jul 2026332 PMAQI
24th Jul 2026333 PMAQI
24th Jul 2026314 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026316 PMAQI
24th Jul 2026337 PMAQI
24th Jul 2026298 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20263110 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20263312 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026312 AMAQI
25th Jul 2026293 AMAQI
25th Jul 2026314 AMAQI

28°C25/33°C

25th Jul 2026295 AMAQI
25th Jul 2026276 AMAQI
25th Jul 2026317 AMAQI
25th Jul 2026298 AMAQI
25th Jul 2026299 AMAQI
25th Jul 20262510 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20262712 PMAQI
25th Jul 2026251 PMAQI
25th Jul 2026232 PMAQI
25th Jul 2026233 PMAQI
25th Jul 2026214 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026236 PMAQI
25th Jul 2026237 PMAQI
25th Jul 2026218 PMAQI
25th Jul 2026429 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262111 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026251 AMAQI
26th Jul 2026232 AMAQI
26th Jul 2026213 AMAQI
26th Jul 2026254 AMAQI

28°C25/33°C

26th Jul 2026255 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262112 PMAQI
26th Jul 2026231 PMAQI
26th Jul 2026212 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026315 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20263110 PMAQI
26th Jul 20263311 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026331 AMAQI
27th Jul 2026332 AMAQI
27th Jul 2026333 AMAQI
27th Jul 2026334 AMAQI

28°C25/33°C

27th Jul 2026315 AMAQI
27th Jul 2026296 AMAQI
27th Jul 2026337 AMAQI
27th Jul 2026278 AMAQI
27th Jul 2026299 AMAQI
27th Jul 20262910 AMAQI
27th Jul 20262911 AMAQI
27th Jul 20263112 PMAQI
27th Jul 2026331 PMAQI
27th Jul 2026292 PMAQI
27th Jul 2026313 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026295 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026218 PMAQI
27th Jul 2026219 PMAQI
27th Jul 20262110 PMAQI
27th Jul 20262711 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026211 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026213 AMAQI
28th Jul 2026234 AMAQI

29°C26/34°C

28th Jul 2026255 AMAQI
28th Jul 2026296 AMAQI
28th Jul 2026337 AMAQI
28th Jul 2026218 AMAQI
28th Jul 2026219 AMAQI
28th Jul 20262310 AMAQI
28th Jul 20262511 AMAQI
28th Jul 20262512 PMAQI
28th Jul 2026251 PMAQI
28th Jul 2026252 PMAQI
28th Jul 2026253 PMAQI
28th Jul 2026214 PMAQI
28th Jul 2026295 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026218 PMAQI
28th Jul 2026219 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262911 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026232 AMAQI
29th Jul 2026253 AMAQI
29th Jul 2026234 AMAQI

29°C26/33°C

29th Jul 2026255 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262111 AMAQI
29th Jul 20262312 PMAQI
29th Jul 2026211 PMAQI
29th Jul 2026212 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026217 PMAQI
29th Jul 2026238 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20262110 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026212 AMAQI
30th Jul 2026233 AMAQI
30th Jul 2026214 AMAQI

28°C25/31°C

30th Jul 2026235 AMAQI
30th Jul 2026326 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20262112 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026232 PMAQI
30th Jul 2026213 PMAQI
30th Jul 2026234 PMAQI
30th Jul 2026215 PMAQI
30th Jul 2026216 PMAQI
30th Jul 2026217 PMAQI
30th Jul 2026238 PMAQI
30th Jul 2026239 PMAQI
30th Jul 20262310 PMAQI
30th Jul 20262311 PMAQI
31st Jul 20262312 AMAQI
31st Jul 2026251 AMAQI
31st Jul 2026252 AMAQI
31st Jul 2026213 AMAQI
31st Jul 2026234 AMAQI

29°C26/33°C

31st Jul 2026235 AMAQI
31st Jul 2026216 AMAQI
31st Jul 2026237 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026239 AMAQI
31st Jul 20262310 AMAQI
31st Jul 20262311 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026252 PMAQI
31st Jul 2026253 PMAQI
31st Jul 2026234 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026256 PMAQI
31st Jul 2026217 PMAQI
31st Jul 2026218 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20262511 PMAQI
1st Aug 20262312 AMAQI
1st Aug 2026231 AMAQI
1st Aug 2026252 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026214 AMAQI

28°C25/33°C

1st Aug 2026215 AMAQI
1st Aug 2026236 AMAQI
1st Aug 2026217 AMAQI
1st Aug 2026238 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20262310 AMAQI
1st Aug 20262511 AMAQI
1st Aug 20262512 PMAQI
1st Aug 2026271 PMAQI
1st Aug 2026292 PMAQI
1st Aug 2026293 PMAQI
1st Aug 2026294 PMAQI
1st Aug 2026295 PMAQI
1st Aug 2026316 PMAQI
1st Aug 2026317 PMAQI
1st Aug 2026388 PMAQI
1st Aug 2026449 PMAQI
1st Aug 20264210 PMAQI
1st Aug 20264611 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026421 AMAQI
2nd Aug 2026482 AMAQI
2nd Aug 2026463 AMAQI
2nd Aug 2026444 AMAQI

29°C25/34°C

2nd Aug 2026425 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026407 AMAQI
2nd Aug 2026388 AMAQI
2nd Aug 2026389 AMAQI
2nd Aug 20264010 AMAQI
2nd Aug 20263811 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026381 PMAQI
2nd Aug 2026362 PMAQI
2nd Aug 2026363 PMAQI
2nd Aug 2026334 PMAQI
2nd Aug 2026365 PMAQI
2nd Aug 2026406 PMAQI
2nd Aug 2026387 PMAQI
2nd Aug 2026448 PMAQI
2nd Aug 2026449 PMAQI
2nd Aug 20264410 PMAQI
2nd Aug 20264811 PMAQI
3rd Aug 20264812 AMAQI
3rd Aug 2026491 AMAQI
3rd Aug 2026482 AMAQI
3rd Aug 2026463 AMAQI
3rd Aug 2026504 AMAQI

29°C26/35°C

3rd Aug 2026485 AMAQI
3rd Aug 2026496 AMAQI
3rd Aug 2026517 AMAQI
3rd Aug 2026488 AMAQI
3rd Aug 2026519 AMAQI
3rd Aug 20265110 AMAQI
3rd Aug 20264911 AMAQI
3rd Aug 20265012 PMAQI
3rd Aug 2026481 PMAQI
3rd Aug 2026512 PMAQI
3rd Aug 2026513 PMAQI
3rd Aug 2026524 PMAQI
3rd Aug 2026505 PMAQI
3rd Aug 2026466 PMAQI
3rd Aug 2026507 PMAQI
3rd Aug 2026468 PMAQI
3rd Aug 2026469 PMAQI
3rd Aug 20264210 PMAQI
3rd Aug 20264011 PMAQI
4th Aug 20263812 AMAQI
4th Aug 2026401 AMAQI
4th Aug 2026442 AMAQI
4th Aug 2026463 AMAQI
4th Aug 2026404 AMAQI

29°C26/33°C

4th Aug 2026405 AMAQI
4th Aug 2026466 AMAQI
4th Aug 2026447 AMAQI
4th Aug 2026428 AMAQI
4th Aug 2026429 AMAQI
4th Aug 20264210 AMAQI
4th Aug 20264011 AMAQI
4th Aug 20264012 PMAQI
4th Aug 2026401 PMAQI
4th Aug 2026442 PMAQI
4th Aug 2026403 PMAQI
4th Aug 2026424 PMAQI
4th Aug 2026405 PMAQI
4th Aug 2026386 PMAQI
4th Aug 2026407 PMAQI
4th Aug 2026368 PMAQI
4th Aug 2026389 PMAQI
4th Aug 20263810 PMAQI
4th Aug 20263811 PMAQI
5th Aug 20263312 AMAQI
5th Aug 2026311 AMAQI
5th Aug 2026312 AMAQI
5th Aug 2026313 AMAQI
5th Aug 2026334 AMAQI

28°C26/31°C

5th Aug 2026315 AMAQI
5th Aug 2026316 AMAQI
5th Aug 2026317 AMAQI
5th Aug 2026318 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20263110 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20262712 PMAQI
5th Aug 2026271 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026253 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026295 PMAQI
5th Aug 2026316 PMAQI
5th Aug 2026337 PMAQI
5th Aug 2026368 PMAQI
5th Aug 2026369 PMAQI
5th Aug 20263810 PMAQI
5th Aug 20263811 PMAQI
6th Aug 20263612 AMAQI
6th Aug 2026331 AMAQI
6th Aug 2026362 AMAQI
6th Aug 2026343 AMAQI
6th Aug 2026334 AMAQI

28°C25/31°C

6th Aug 2026335 AMAQI
6th Aug 2026346 AMAQI
6th Aug 2026367 AMAQI
6th Aug 2026338 AMAQI
6th Aug 2026339 AMAQI
6th Aug 20263310 AMAQI
6th Aug 20263111 AMAQI
6th Aug 20263112 PMAQI
6th Aug 2026311 PMAQI
6th Aug 2026332 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026314 PMAQI
6th Aug 2026275 PMAQI
6th Aug 2026276 PMAQI
6th Aug 2026257 PMAQI
6th Aug 2026278 PMAQI
6th Aug 2026299 PMAQI
6th Aug 20262710 PMAQI
6th Aug 20262511 PMAQI
7th Aug 20262712 AMAQI
7th Aug 2026271 AMAQI
7th Aug 2026252 AMAQI
7th Aug 2026253 AMAQI
7th Aug 2026254 AMAQI

28°C25/32°C

7th Aug 2026215 AMAQI
7th Aug 2026256 AMAQI
7th Aug 2026237 AMAQI
7th Aug 2026218 AMAQI
7th Aug 2026219 AMAQI
7th Aug 20262110 AMAQI
7th Aug 20262111 AMAQI
7th Aug 20262312 PMAQI
7th Aug 2026321 PMAQI
7th Aug 2026362 PMAQI
7th Aug 2026233 PMAQI
7th Aug 2026214 PMAQI
7th Aug 2026215 PMAQI
7th Aug 2026236 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026218 PMAQI
7th Aug 2026219 PMAQI
7th Aug 20262110 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026211 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026213 AMAQI
8th Aug 2026214 AMAQI

28°C25/32°C

8th Aug 2026215 AMAQI
8th Aug 2026216 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026258 AMAQI
8th Aug 2026339 AMAQI
8th Aug 20263310 AMAQI
8th Aug 20262511 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026251 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026293 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026255 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262312 AMAQI
9th Aug 2026211 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026253 AMAQI
9th Aug 2026214 AMAQI

28°C26/31°C

9th Aug 2026215 AMAQI
9th Aug 2026216 AMAQI
9th Aug 2026217 AMAQI
9th Aug 2026238 AMAQI
9th Aug 2026239 AMAQI
9th Aug 20262110 AMAQI
9th Aug 20262111 AMAQI
9th Aug 20262112 PMAQI
9th Aug 2026231 PMAQI
9th Aug 2026212 PMAQI
9th Aug 2026233 PMAQI
9th Aug 2026214 PMAQI
9th Aug 2026215 PMAQI
9th Aug 2026216 PMAQI
9th Aug 2026217 PMAQI
9th Aug 2026238 PMAQI
9th Aug 2026239 PMAQI
9th Aug 20262310 PMAQI
9th Aug 20262111 PMAQI
10th Aug 20262112 AMAQI
10th Aug 2026211 AMAQI
10th Aug 2026232 AMAQI
10th Aug 2026213 AMAQI
10th Aug 2026214 AMAQI

27°C25/30°C

10th Aug 2026215 AMAQI
10th Aug 2026236 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026258 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262710 AMAQI
10th Aug 20262711 AMAQI
10th Aug 20262512 PMAQI
10th Aug 2026251 PMAQI
10th Aug 2026292 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026314 PMAQI
10th Aug 2026335 PMAQI
10th Aug 2026316 PMAQI
10th Aug 2026337 PMAQI
10th Aug 2026298 PMAQI
10th Aug 2026299 PMAQI
10th Aug 20262710 PMAQI
10th Aug 20262911 PMAQI
11th Aug 20262712 AMAQI
11th Aug 2026251 AMAQI
11th Aug 2026272 AMAQI
11th Aug 2026273 AMAQI
11th Aug 2026274 AMAQI

27°C24/30°C

11th Aug 2026255 AMAQI
11th Aug 2026256 AMAQI
11th Aug 2026257 AMAQI
11th Aug 2026238 AMAQI
11th Aug 2026239 AMAQI
11th Aug 20262110 AMAQI
11th Aug 20262111 AMAQI
11th Aug 20262112 PMAQI
11th Aug 2026211 PMAQI
11th Aug 2026212 PMAQI
11th Aug 2026253 PMAQI
11th Aug 2026214 PMAQI
11th Aug 2026255 PMAQI
11th Aug 2026216 PMAQI
11th Aug 2026257 PMAQI
11th Aug 2026218 PMAQI
11th Aug 2026239 PMAQI
11th Aug 20262510 PMAQI
11th Aug 20262311 PMAQI
12th Aug 20262312 AMAQI
12th Aug 2026231 AMAQI
12th Aug 2026212 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026214 AMAQI

26°C22/30°C

12th Aug 2026215 AMAQI
12th Aug 2026216 AMAQI
12th Aug 2026217 AMAQI
12th Aug 2026218 AMAQI
12th Aug 2026239 AMAQI
12th Aug 20262110 AMAQI
12th Aug 20262111 AMAQI
12th Aug 20262312 PMAQI
12th Aug 2026211 PMAQI
12th Aug 2026212 PMAQI
12th Aug 2026253 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026215 PMAQI
12th Aug 2026216 PMAQI
12th Aug 2026217 PMAQI
12th Aug 2026218 PMAQI
12th Aug 2026219 PMAQI
12th Aug 20262110 PMAQI
12th Aug 20262511 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026232 AMAQI
13th Aug 2026253 AMAQI
13th Aug 2026254 AMAQI

26°C21/31°C

13th Aug 2026255 AMAQI
13th Aug 2026216 AMAQI
13th Aug 2026237 AMAQI
13th Aug 2026238 AMAQI
13th Aug 2026259 AMAQI
13th Aug 20262510 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262312 PMAQI
13th Aug 2026271 PMAQI
13th Aug 2026252 PMAQI
13th Aug 2026253 PMAQI
13th Aug 2026254 PMAQI
13th Aug 2026275 PMAQI
13th Aug 2026276 PMAQI
13th Aug 2026277 PMAQI
13th Aug 2026258 PMAQI
13th Aug 2026279 PMAQI
13th Aug 20262910 PMAQI
13th Aug 20265511 PMAQI
14th Aug 20264012 AMAQI
14th Aug 2026441 AMAQI
14th Aug 2026442 AMAQI
14th Aug 2026483 AMAQI
14th Aug 2026524 AMAQI

26°C23/29°C

14th Aug 2026545 AMAQI
14th Aug 2026566 AMAQI
14th Aug 2026547 AMAQI
14th Aug 2026558 AMAQI
14th Aug 2026569 AMAQI
14th Aug 20265510 AMAQI
14th Aug 20265411 AMAQI
14th Aug 20266212 PMAQI
14th Aug 2026621 PMAQI
14th Aug 2026642 PMAQI
14th Aug 2026653 PMAQI
14th Aug 2026624 PMAQI
14th Aug 2026605 PMAQI
14th Aug 2026466 PMAQI
14th Aug 2026367 PMAQI
14th Aug 2026318 PMAQI
14th Aug 2026339 PMAQI
14th Aug 20262910 PMAQI
14th Aug 20262511 PMAQI
15th Aug 20262512 AMAQI
15th Aug 2026231 AMAQI
15th Aug 2026502 AMAQI
15th Aug 2026213 AMAQI
15th Aug 2026464 AMAQI

26°C24/29°C

15th Aug 2026275 AMAQI
15th Aug 2026236 AMAQI
15th Aug 2026297 AMAQI
15th Aug 2026298 AMAQI
15th Aug 2026299 AMAQI
15th Aug 20262110 AMAQI
15th Aug 20262111 AMAQI
15th Aug 20262312 PMAQI
15th Aug 2026231 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026233 PMAQI
15th Aug 2026214 PMAQI
15th Aug 2026175 PMAQI
15th Aug 2026126 PMAQI
15th Aug 2026197 PMAQI
15th Aug 2026238 PMAQI
15th Aug 2026259 PMAQI
15th Aug 20262510 PMAQI
15th Aug 20262311 PMAQI
16th Aug 20261712 AMAQI
16th Aug 2026141 AMAQI
16th Aug 2026192 AMAQI
16th Aug 2026123 AMAQI
16th Aug 2026214 AMAQI

26°C24/29°C

16th Aug 2026215 AMAQI
16th Aug 2026216 AMAQI
16th Aug 2026257 AMAQI
16th Aug 2026218 AMAQI
16th Aug 2026239 AMAQI
16th Aug 20262110 AMAQI
16th Aug 20262511 AMAQI
16th Aug 20262112 PMAQI
16th Aug 2026231 PMAQI
16th Aug 2026212 PMAQI
16th Aug 2026253 PMAQI
16th Aug 2026214 PMAQI
16th Aug 2026235 PMAQI
16th Aug 2026256 PMAQI
16th Aug 2026257 PMAQI
16th Aug 2026238 PMAQI
16th Aug 2026259 PMAQI
16th Aug 20262510 PMAQI
16th Aug 20262511 PMAQI
17th Aug 20262112 AMAQI
17th Aug 2026251 AMAQI
17th Aug 2026252 AMAQI
17th Aug 2026253 AMAQI
17th Aug 2026254 AMAQI

26°C26/27°C

17th Aug 2026255 AMAQI
5 AM
17th Aug 2026256 AMAQI
17th Aug 2026257 AMAQI
17th Aug 2026258 AMAQI
17th Aug 2026259 AMAQI
17th Aug 20262510 AMAQI
17th Aug 20263311 AMAQI
17th Aug 20262512 PMAQI
12 PM
17th Aug 2026251 PMAQI
17th Aug 2026292 PMAQI
17th Aug 2026363 PMAQI
17th Aug 2026294 PMAQI
17th Aug 2026385 PMAQI
17th Aug 2026296 PMAQI
17th Aug 2026217 PMAQI
7 PM
17th Aug 2026258 PMAQI
17th Aug 2026259 PMAQI
17th Aug 20262110 PMAQI
17th Aug 20262511 PMAQI
12 AM
4 AM

15°C15/15°C

Day time
Avg. Highest Time
1 PM - 3 PM

33AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
8 AM

30AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 3 PM (Avg. 33), while the lowest AQI was between 8 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
2 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
8 PM

30AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 2 AM (Avg. 33), while the lowest AQI was between 8 PM to 8 PM (Avg. 30).

2026 Days Vs Air Quality

Kotoshibacho, Ube, Yamaguchi, Japan

2026

82%

188

18%

41

Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)

Good
188 Days
Moderate
41 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 82%

Health Risk Level:

Low

In 2026, 82% of 229 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

Kotoshibacho, Ube, Yamaguchi, Japan

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
22AQI (US)
2nd January 2026
21AQI (US)
3rd January 2026
23AQI (US)
4th January 2026
38AQI (US)
5th January 2026
47AQI (US)
6th January 2026
34AQI (US)
7th January 2026
41AQI (US)
8th January 2026
28AQI (US)
9th January 2026
21AQI (US)
10th January 2026
32AQI (US)
11th January 2026
25AQI (US)
12th January 2026
21AQI (US)
13th January 2026
43AQI (US)
14th January 2026
23AQI (US)
15th January 2026
40AQI (US)
16th January 2026
64AQI (US)
17th January 2026
72AQI (US)
18th January 2026
72AQI (US)
19th January 2026
71AQI (US)
20th January 2026
28AQI (US)
21st January 2026
12AQI (US)
22nd January 2026
18AQI (US)
23rd January 2026
35AQI (US)
24th January 2026
44AQI (US)
25th January 2026
14AQI (US)
26th January 2026
15AQI (US)
27th January 2026
49AQI (US)
28th January 2026
35AQI (US)
29th January 2026
43AQI (US)
30th January 2026
27AQI (US)
31st January 2026
30AQI (US)
1st February 2026
51AQI (US)
2nd February 2026
48AQI (US)
3rd February 2026
32AQI (US)
4th February 2026
40AQI (US)
5th February 2026
46AQI (US)
6th February 2026
51AQI (US)
7th February 2026
29AQI (US)
8th February 2026
22AQI (US)
9th February 2026
38AQI (US)
10th February 2026
43AQI (US)
11th February 2026
49AQI (US)
12th February 2026
44AQI (US)
13th February 2026
61AQI (US)
14th February 2026
68AQI (US)
15th February 2026
55AQI (US)
16th February 2026
58AQI (US)
17th February 2026
27AQI (US)
18th February 2026
35AQI (US)
19th February 2026
60AQI (US)
20th February 2026
60AQI (US)
21st February 2026
78AQI (US)
22nd February 2026
49AQI (US)
23rd February 2026
45AQI (US)
24th February 2026
20AQI (US)
25th February 2026
23AQI (US)
26th February 2026
29AQI (US)
27th February 2026
49AQI (US)
28th February 2026
35AQI (US)
1st March 2026
37AQI (US)
2nd March 2026
59AQI (US)
3rd March 2026
38AQI (US)
4th March 2026
45AQI (US)
5th March 2026
48AQI (US)
6th March 2026
50AQI (US)
7th March 2026
49AQI (US)
8th March 2026
41AQI (US)
9th March 2026
34AQI (US)
10th March 2026
44AQI (US)
11th March 2026
57AQI (US)
12th March 2026
59AQI (US)
13th March 2026
38AQI (US)
14th March 2026
42AQI (US)
15th March 2026
60AQI (US)
16th March 2026
51AQI (US)
17th March 2026
43AQI (US)
18th March 2026
50AQI (US)
19th March 2026
51AQI (US)
20th March 2026
55AQI (US)
21st March 2026
45AQI (US)
22nd March 2026
47AQI (US)
23rd March 2026
39AQI (US)
24th March 2026
48AQI (US)
25th March 2026
51AQI (US)
26th March 2026
24AQI (US)
27th March 2026
47AQI (US)
28th March 2026
76AQI (US)
29th March 2026
77AQI (US)
30th March 2026
61AQI (US)
31st March 2026
23AQI (US)
1st April 2026
20AQI (US)
2nd April 2026
54AQI (US)
3rd April 2026
53AQI (US)
4th April 2026
25AQI (US)
5th April 2026
39AQI (US)
6th April 2026
36AQI (US)
7th April 2026
28AQI (US)
8th April 2026
31AQI (US)
9th April 2026
33AQI (US)
10th April 2026
45AQI (US)
11th April 2026
35AQI (US)
12th April 2026
47AQI (US)
13th April 2026
48AQI (US)
14th April 2026
30AQI (US)
15th April 2026
36AQI (US)
16th April 2026
36AQI (US)
17th April 2026
34AQI (US)
18th April 2026
28AQI (US)
19th April 2026
30AQI (US)
20th April 2026
35AQI (US)
21st April 2026
41AQI (US)
22nd April 2026
46AQI (US)
23rd April 2026
27AQI (US)
24th April 2026
34AQI (US)
25th April 2026
46AQI (US)
26th April 2026
50AQI (US)
27th April 2026
49AQI (US)
28th April 2026
51AQI (US)
29th April 2026
40AQI (US)
30th April 2026
32AQI (US)
1st May 2026
50AQI (US)
2nd May 2026
53AQI (US)
3rd May 2026
42AQI (US)
4th May 2026
36AQI (US)
5th May 2026
25AQI (US)
6th May 2026
29AQI (US)
7th May 2026
30AQI (US)
8th May 2026
28AQI (US)
9th May 2026
30AQI (US)
10th May 2026
33AQI (US)
11th May 2026
33AQI (US)
12th May 2026
30AQI (US)
13th May 2026
39AQI (US)
14th May 2026
31AQI (US)
15th May 2026
34AQI (US)
16th May 2026
77AQI (US)
17th May 2026
62AQI (US)
18th May 2026
53AQI (US)
19th May 2026
45AQI (US)
20th May 2026
60AQI (US)
21st May 2026
66AQI (US)
22nd May 2026
70AQI (US)
23rd May 2026
62AQI (US)
24th May 2026
64AQI (US)
25th May 2026
55AQI (US)
26th May 2026
42AQI (US)
27th May 2026
24AQI (US)
28th May 2026
25AQI (US)
29th May 2026
25AQI (US)
30th May 2026
24AQI (US)
31st May 2026
28AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
27AQI (US)
4th June 2026
25AQI (US)
5th June 2026
23AQI (US)
6th June 2026
24AQI (US)
7th June 2026
21AQI (US)
8th June 2026
21AQI (US)
9th June 2026
23AQI (US)
10th June 2026
22AQI (US)
11th June 2026
29AQI (US)
12th June 2026
26AQI (US)
13th June 2026
26AQI (US)
14th June 2026
24AQI (US)
15th June 2026
23AQI (US)
16th June 2026
25AQI (US)
17th June 2026
24AQI (US)
18th June 2026
27AQI (US)
19th June 2026
31AQI (US)
20th June 2026
21AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
20AQI (US)
25th June 2026
26AQI (US)
26th June 2026
28AQI (US)
27th June 2026
26AQI (US)
28th June 2026
26AQI (US)
29th June 2026
25AQI (US)
30th June 2026
41AQI (US)
1st July 2026
41AQI (US)
2nd July 2026
23AQI (US)
3rd July 2026
28AQI (US)
4th July 2026
26AQI (US)
5th July 2026
21AQI (US)
6th July 2026
21AQI (US)
7th July 2026
26AQI (US)
8th July 2026
25AQI (US)
9th July 2026
24AQI (US)
10th July 2026
26AQI (US)
11th July 2026
28AQI (US)
12th July 2026
28AQI (US)
13th July 2026
37AQI (US)
14th July 2026
29AQI (US)
15th July 2026
24AQI (US)
16th July 2026
28AQI (US)
17th July 2026
33AQI (US)
18th July 2026
57AQI (US)
19th July 2026
63AQI (US)
20th July 2026
54AQI (US)
21st July 2026
51AQI (US)
22nd July 2026
36AQI (US)
23rd July 2026
27AQI (US)
24th July 2026
31AQI (US)
25th July 2026
27AQI (US)
26th July 2026
25AQI (US)
27th July 2026
29AQI (US)
28th July 2026
25AQI (US)
29th July 2026
22AQI (US)
30th July 2026
22AQI (US)
31st July 2026
24AQI (US)
1st August 2026
28AQI (US)
2nd August 2026
41AQI (US)
3rd August 2026
48AQI (US)
4th August 2026
41AQI (US)
5th August 2026
31AQI (US)
6th August 2026
31AQI (US)
7th August 2026
24AQI (US)
8th August 2026
24AQI (US)
9th August 2026
22AQI (US)
10th August 2026
26AQI (US)
11th August 2026
24AQI (US)
12th August 2026
22AQI (US)
13th August 2026
26AQI (US)
14th August 2026
49AQI (US)
15th August 2026
25AQI (US)
16th August 2026
22AQI (US)
17th August 2026
26AQI (US)
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

35AQI (US)

44AQI (US)

48AQI (US)

38AQI (US)

42AQI (US)

25AQI (US)

31AQI (US)

30AQI (US)

No. of days

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

202637AQI (US)

27
4
19
9
20
11
27
3
21
10
30
27
4
17
188
41

Highest AQI (US) recorded in

March

48AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202544AQI (US)

27
4
25
3
18
13
18
12
22
9
18
12
16
15
29
2
30
18
13
19
11
21
10
261
104

Highest AQI (US) recorded in

March

49AQI (US)

Lowest AQI (US) recorded in

September

30AQI (US)

202437AQI (US)

27
3
24
5
23
8
18
11
1
25
6
26
4
31
29
2
26
4
31
27
3
31
318
46
1

Highest AQI (US) recorded in

April

51AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

202341AQI (US)

22
6
2
26
2
18
13
14
16
22
9
24
6
28
3
30
1
26
4
26
5
22
7
22
9
280
81
2

Highest AQI (US) recorded in

April

53AQI (US)

Lowest AQI (US) recorded in

August

29AQI (US)

202242AQI (US)

23
6
17
4
18
12
1
20
10
18
13
24
6
17
5
1
26
2
27
4
24
6
30
1
244
70
1

Highest AQI (US) recorded in

March

53AQI (US)

Lowest AQI (US) recorded in

October

35AQI (US)

202139AQI (US)

22
8
21
7
20
9
17
4
19
12
19
11
30
1
27
1
27
3
27
4
21
9
30
1
280
70

Highest AQI (US) recorded in

May

46AQI (US)

Lowest AQI (US) recorded in

August

31AQI (US)

202037AQI (US)

11
2
13
8
12
6
20
10
29
2
12
6
1
18
1
28
3
26
4
24
7
193
49
1

Highest AQI (US) recorded in

April

45AQI (US)

Lowest AQI (US) recorded in

September

30AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
44AQI (US)
Least Polluted Year Recorded
2020(Avg.)
37AQI (US)

Kotoshibacho's annual 2026 AQI (US) (37) shows an average percentage change of -7.1% (improved AQI (US)) compared to previous years: 2020 (37), 2021 (39), 2022 (42), 2023 (41), 2024 (37), 2025 (44).