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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Yamatemachi, Iwakuni, 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

Yamatemachi, Iwakuni, Yamaguchi, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
15th Aug 2024
61AQI
Lowest AQI recorded on
23rd Aug 2024
16AQI

Same Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 16th Aug - 17th Aug 2026

Yamatemachi, Iwakuni, Yamaguchi, Japan

AQI
Day
Night
.

5 AM16th Aug 2026

7 PM

4 AM17th Aug 2026

Day time
Avg. Highest Time
6PM16th Aug

33AQI

Avg. Lowest Time
2PM16th Aug

21AQI

Night time
Avg. Highest Time
8PM16th Aug

31AQI

Avg. Lowest Time
12AM17th Aug

21AQI

In the last 24 hours,

Yamatemachi's AQI reached its highest point of 33 at 6 PM 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

Yamatemachi, Iwakuni, 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 2026495 AMAQI
19th Jul 2026446 AMAQI
19th Jul 2026487 AMAQI
19th Jul 2026428 AMAQI
19th Jul 2026469 AMAQI
19th Jul 20264610 AMAQI
19th Jul 20264611 AMAQI
19th Jul 20264412 PMAQI
19th Jul 2026461 PMAQI
19th Jul 2026482 PMAQI
19th Jul 2026473 PMAQI
19th Jul 2026384 PMAQI
19th Jul 2026425 PMAQI
19th Jul 2026406 PMAQI
19th Jul 2026367 PMAQI
19th Jul 2026368 PMAQI
19th Jul 2026429 PMAQI
19th Jul 20263810 PMAQI
19th Jul 20264411 PMAQI
20th Jul 20264412 AMAQI
20th Jul 2026501 AMAQI
20th Jul 2026562 AMAQI
20th Jul 2026543 AMAQI
20th Jul 2026504 AMAQI

27°C24/30°C

20th Jul 2026515 AMAQI
20th Jul 2026546 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026498 AMAQI
20th Jul 2026519 AMAQI
20th Jul 20265410 AMAQI
20th Jul 20265511 AMAQI
20th Jul 20265512 PMAQI
20th Jul 2026491 PMAQI
20th Jul 2026502 PMAQI
20th Jul 2026513 PMAQI
20th Jul 2026504 PMAQI
20th Jul 2026525 PMAQI
20th Jul 2026516 PMAQI
20th Jul 2026487 PMAQI
20th Jul 2026578 PMAQI
20th Jul 2026509 PMAQI
20th Jul 20264410 PMAQI
20th Jul 20264611 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026421 AMAQI
21st Jul 2026582 AMAQI
21st Jul 2026533 AMAQI
21st Jul 2026534 AMAQI

27°C24/30°C

21st Jul 2026605 AMAQI
21st Jul 2026606 AMAQI
21st Jul 2026627 AMAQI
21st Jul 2026598 AMAQI
21st Jul 2026609 AMAQI
21st Jul 20266510 AMAQI
21st Jul 20267411 AMAQI
21st Jul 2026801 PMAQI
21st Jul 2026802 PMAQI
21st Jul 2026703 PMAQI
21st Jul 2026694 PMAQI
21st Jul 2026295 PMAQI
21st Jul 2026296 PMAQI
21st Jul 2026797 PMAQI
21st Jul 2026608 PMAQI
21st Jul 2026629 PMAQI
21st Jul 20266310 PMAQI
21st Jul 20266411 PMAQI
22nd Jul 20265812 AMAQI
22nd Jul 2026581 AMAQI
22nd Jul 2026572 AMAQI
22nd Jul 2026563 AMAQI
22nd Jul 2026534 AMAQI

27°C24/30°C

22nd Jul 2026605 AMAQI
22nd Jul 2026626 AMAQI
22nd Jul 2026567 AMAQI
22nd Jul 2026548 AMAQI
22nd Jul 2026699 AMAQI
22nd Jul 20267010 AMAQI
22nd Jul 20266311 AMAQI
22nd Jul 20266912 PMAQI
22nd Jul 2026601 PMAQI
22nd Jul 2026572 PMAQI
22nd Jul 2026533 PMAQI
22nd Jul 2026514 PMAQI
22nd Jul 2026445 PMAQI
22nd Jul 2026336 PMAQI
22nd Jul 2026577 PMAQI
22nd Jul 2026538 PMAQI
22nd Jul 2026549 PMAQI
22nd Jul 20265410 PMAQI
22nd Jul 20265511 PMAQI
23rd Jul 20265212 AMAQI
23rd Jul 2026421 AMAQI
23rd Jul 2026422 AMAQI
23rd Jul 2026233 AMAQI
23rd Jul 2026254 AMAQI

27°C24/31°C

23rd Jul 2026255 AMAQI
23rd Jul 2026296 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026298 AMAQI
23rd Jul 2026339 AMAQI
23rd Jul 20264010 AMAQI
23rd Jul 20264211 AMAQI
23rd Jul 20265812 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026542 PMAQI
23rd Jul 2026513 PMAQI
23rd Jul 2026514 PMAQI
23rd Jul 2026525 PMAQI
23rd Jul 2026596 PMAQI
23rd Jul 2026547 PMAQI
23rd Jul 2026528 PMAQI
23rd Jul 2026529 PMAQI
23rd Jul 20264410 PMAQI
23rd Jul 20264011 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026331 AMAQI
24th Jul 2026292 AMAQI
24th Jul 2026293 AMAQI
24th Jul 2026294 AMAQI

27°C24/32°C

24th Jul 2026255 AMAQI
24th Jul 2026276 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026319 AMAQI
24th Jul 20263810 AMAQI
24th Jul 20265211 AMAQI
24th Jul 20266412 PMAQI
24th Jul 2026631 PMAQI
24th Jul 2026682 PMAQI
24th Jul 2026603 PMAQI
24th Jul 2026534 PMAQI
24th Jul 2026535 PMAQI
24th Jul 2026546 PMAQI
24th Jul 2026597 PMAQI
24th Jul 2026528 PMAQI
24th Jul 2026489 PMAQI
24th Jul 20264610 PMAQI
24th Jul 20265611 PMAQI
25th Jul 20265312 AMAQI
25th Jul 2026421 AMAQI
25th Jul 2026442 AMAQI
25th Jul 2026383 AMAQI
25th Jul 2026364 AMAQI

27°C23/31°C

25th Jul 2026335 AMAQI
25th Jul 2026336 AMAQI
25th Jul 2026337 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026319 AMAQI
25th Jul 20263310 AMAQI
25th Jul 20265511 AMAQI
25th Jul 20264812 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026312 PMAQI
25th Jul 2026333 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026385 PMAQI
25th Jul 2026366 PMAQI
25th Jul 2026317 PMAQI
25th Jul 2026368 PMAQI
25th Jul 2026339 PMAQI
25th Jul 20263310 PMAQI
25th Jul 20263311 PMAQI
26th Jul 20263312 AMAQI
26th Jul 2026231 AMAQI
26th Jul 2026212 AMAQI
26th Jul 2026213 AMAQI
26th Jul 2026214 AMAQI

28°C24/32°C

26th Jul 2026215 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026217 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262110 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20263612 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026214 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026278 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20262710 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026331 AMAQI
27th Jul 2026292 AMAQI
27th Jul 2026273 AMAQI
27th Jul 2026254 AMAQI

27°C24/31°C

27th Jul 2026275 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026238 AMAQI
27th Jul 2026259 AMAQI
27th Jul 20262510 AMAQI
27th Jul 20262911 AMAQI
27th Jul 20263312 PMAQI
27th Jul 2026381 PMAQI
27th Jul 2026402 PMAQI
27th Jul 2026293 PMAQI
27th Jul 2026314 PMAQI
27th Jul 2026295 PMAQI
27th Jul 2026366 PMAQI
27th Jul 2026387 PMAQI
27th Jul 2026368 PMAQI
27th Jul 2026409 PMAQI
27th Jul 20263610 PMAQI
27th Jul 20263111 PMAQI
28th Jul 20263612 AMAQI
28th Jul 2026441 AMAQI
28th Jul 2026382 AMAQI
28th Jul 2026383 AMAQI
28th Jul 2026384 AMAQI

28°C24/32°C

28th Jul 2026365 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026367 AMAQI
28th Jul 2026368 AMAQI
28th Jul 2026339 AMAQI
28th Jul 20263110 AMAQI
28th Jul 20262711 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026211 PMAQI
28th Jul 2026252 PMAQI
28th Jul 2026213 PMAQI
28th Jul 2026274 PMAQI
28th Jul 2026235 PMAQI
28th Jul 2026216 PMAQI
28th Jul 2026217 PMAQI
28th Jul 2026218 PMAQI
28th Jul 2026219 PMAQI
28th Jul 20262310 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026311 AMAQI
29th Jul 2026212 AMAQI
29th Jul 2026213 AMAQI
29th Jul 2026214 AMAQI

28°C23/34°C

29th Jul 2026215 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026299 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262111 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026332 PMAQI
29th Jul 2026253 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026256 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026278 PMAQI
29th Jul 2026279 PMAQI
29th Jul 20262710 PMAQI
29th Jul 20262711 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026311 AMAQI
30th Jul 2026292 AMAQI
30th Jul 2026273 AMAQI
30th Jul 2026274 AMAQI

25°C22/29°C

30th Jul 2026275 AMAQI
30th Jul 2026296 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026298 AMAQI
30th Jul 2026279 AMAQI
30th Jul 20262910 AMAQI
30th Jul 20262911 AMAQI
30th Jul 20262712 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026272 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026216 PMAQI
30th Jul 2026257 PMAQI
30th Jul 2026238 PMAQI
30th Jul 2026239 PMAQI
30th Jul 20262310 PMAQI
30th Jul 20262111 PMAQI
31st Jul 20262112 AMAQI
31st Jul 2026211 AMAQI
31st Jul 2026212 AMAQI
31st Jul 2026253 AMAQI
31st Jul 2026234 AMAQI

27°C24/32°C

31st Jul 2026215 AMAQI
31st Jul 2026216 AMAQI
31st Jul 2026237 AMAQI
31st Jul 2026218 AMAQI
31st Jul 2026239 AMAQI
31st Jul 20262310 AMAQI
31st Jul 20262111 AMAQI
31st Jul 20262312 PMAQI
31st Jul 2026211 PMAQI
31st Jul 2026232 PMAQI
31st Jul 2026243 PMAQI
31st Jul 2026254 PMAQI
31st Jul 2026235 PMAQI
31st Jul 2026256 PMAQI
31st Jul 2026277 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026279 PMAQI
31st Jul 20262710 PMAQI
31st Jul 20262711 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026251 AMAQI
1st Aug 2026252 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026254 AMAQI

26°C22/31°C

1st Aug 2026235 AMAQI
1st Aug 2026236 AMAQI
1st Aug 2026217 AMAQI
1st Aug 2026218 AMAQI
1st Aug 2026219 AMAQI
1st Aug 20262110 AMAQI
1st Aug 20262311 AMAQI
1st Aug 20262512 PMAQI
1st Aug 2026251 PMAQI
1st Aug 2026252 PMAQI
1st Aug 2026253 PMAQI
1st Aug 2026254 PMAQI
1st Aug 2026285 PMAQI
1st Aug 2026316 PMAQI
1st Aug 2026337 PMAQI
1st Aug 2026368 PMAQI
1st Aug 2026289 PMAQI
1st Aug 20262510 PMAQI
1st Aug 20262911 PMAQI
2nd Aug 20262712 AMAQI
2nd Aug 2026291 AMAQI
2nd Aug 2026272 AMAQI
2nd Aug 2026253 AMAQI
2nd Aug 2026274 AMAQI

27°C23/33°C

2nd Aug 2026255 AMAQI
2nd Aug 2026236 AMAQI
2nd Aug 2026237 AMAQI
2nd Aug 2026258 AMAQI
2nd Aug 2026259 AMAQI
2nd Aug 20262510 AMAQI
2nd Aug 20262711 AMAQI
2nd Aug 20263312 PMAQI
2nd Aug 2026291 PMAQI
2nd Aug 2026292 PMAQI
2nd Aug 2026253 PMAQI
2nd Aug 2026294 PMAQI
2nd Aug 2026275 PMAQI
2nd Aug 2026256 PMAQI
2nd Aug 2026277 PMAQI
2nd Aug 2026298 PMAQI
2nd Aug 2026299 PMAQI
2nd Aug 20262910 PMAQI
2nd Aug 20263111 PMAQI
3rd Aug 20263812 AMAQI
3rd Aug 2026461 AMAQI
3rd Aug 2026402 AMAQI
3rd Aug 2026363 AMAQI
3rd Aug 2026274 AMAQI

28°C24/33°C

3rd Aug 2026295 AMAQI
3rd Aug 2026316 AMAQI
3rd Aug 2026297 AMAQI
3rd Aug 2026298 AMAQI
3rd Aug 2026299 AMAQI
3rd Aug 20262710 AMAQI
3rd Aug 20263411 AMAQI
3rd Aug 20263812 PMAQI
3rd Aug 2026381 PMAQI
3rd Aug 2026382 PMAQI
3rd Aug 2026403 PMAQI
3rd Aug 2026424 PMAQI
3rd Aug 2026445 PMAQI
3rd Aug 2026426 PMAQI
3rd Aug 2026407 PMAQI
3rd Aug 2026388 PMAQI
3rd Aug 2026369 PMAQI
3rd Aug 20263610 PMAQI
3rd Aug 20264411 PMAQI
4th Aug 20263812 AMAQI
4th Aug 2026381 AMAQI
4th Aug 2026362 AMAQI
4th Aug 2026363 AMAQI
4th Aug 2026384 AMAQI

28°C25/31°C

4th Aug 2026365 AMAQI
4th Aug 2026366 AMAQI
4th Aug 2026337 AMAQI
4th Aug 2026388 AMAQI
4th Aug 2026339 AMAQI
4th Aug 20263110 AMAQI
4th Aug 20263811 AMAQI
4th Aug 20263812 PMAQI
4th Aug 2026401 PMAQI
4th Aug 2026382 PMAQI
4th Aug 2026363 PMAQI
4th Aug 2026484 PMAQI
4th Aug 2026385 PMAQI
4th Aug 2026366 PMAQI
4th Aug 2026387 PMAQI
4th Aug 2026388 PMAQI
4th Aug 2026389 PMAQI
4th Aug 20263810 PMAQI
4th Aug 20263811 PMAQI
5th Aug 20263412 AMAQI
5th Aug 2026381 AMAQI
5th Aug 2026382 AMAQI
5th Aug 2026333 AMAQI
5th Aug 2026364 AMAQI

28°C25/30°C

5th Aug 2026385 AMAQI
5th Aug 2026386 AMAQI
5th Aug 2026387 AMAQI
5th Aug 2026368 AMAQI
5th Aug 2026319 AMAQI
5th Aug 20262710 AMAQI
5th Aug 20262311 AMAQI
5th Aug 20262512 PMAQI
5th Aug 2026361 PMAQI
5th Aug 2026312 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026334 PMAQI
5th Aug 2026335 PMAQI
5th Aug 2026366 PMAQI
5th Aug 2026317 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026299 PMAQI
5th Aug 20262910 PMAQI
5th Aug 20263111 PMAQI
6th Aug 20262912 AMAQI
6th Aug 2026341 AMAQI
6th Aug 2026342 AMAQI
6th Aug 2026333 AMAQI
6th Aug 2026314 AMAQI

27°C24/30°C

6th Aug 2026295 AMAQI
6th Aug 2026316 AMAQI
6th Aug 2026317 AMAQI
6th Aug 2026338 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20263110 AMAQI
6th Aug 20262711 AMAQI
6th Aug 20262712 PMAQI
6th Aug 2026251 PMAQI
6th Aug 2026212 PMAQI
6th Aug 2026253 PMAQI
6th Aug 2026234 PMAQI
6th Aug 2026255 PMAQI
6th Aug 2026236 PMAQI
6th Aug 2026237 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026219 PMAQI
6th Aug 20262310 PMAQI
6th Aug 20262111 PMAQI
7th Aug 20262512 AMAQI
7th Aug 2026211 AMAQI
7th Aug 2026212 AMAQI
7th Aug 2026213 AMAQI
7th Aug 2026254 AMAQI

27°C24/31°C

7th Aug 2026255 AMAQI
7th Aug 2026216 AMAQI
7th Aug 2026217 AMAQI
7th Aug 2026218 AMAQI
7th Aug 2026219 AMAQI
7th Aug 20262110 AMAQI
7th Aug 20262311 AMAQI
7th Aug 20262712 PMAQI
7th Aug 2026341 PMAQI
7th Aug 2026362 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026214 PMAQI
7th Aug 2026445 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026298 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026211 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026213 AMAQI
8th Aug 2026294 AMAQI

27°C25/30°C

8th Aug 2026295 AMAQI
8th Aug 2026296 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262510 AMAQI
8th Aug 20262511 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026291 PMAQI
8th Aug 2026292 PMAQI
8th Aug 2026293 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026255 PMAQI
8th Aug 2026296 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026259 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262311 PMAQI
9th Aug 20262112 AMAQI
9th Aug 2026251 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026213 AMAQI
9th Aug 2026294 AMAQI

27°C25/30°C

9th Aug 2026215 AMAQI
9th Aug 2026216 AMAQI
9th Aug 2026217 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026259 AMAQI
9th Aug 20262110 AMAQI
9th Aug 20262111 AMAQI
9th Aug 20262112 PMAQI
9th Aug 2026251 PMAQI
9th Aug 2026212 PMAQI
9th Aug 2026253 PMAQI
9th Aug 2026274 PMAQI
9th Aug 2026255 PMAQI
9th Aug 2026276 PMAQI
9th Aug 2026277 PMAQI
9th Aug 2026298 PMAQI
9th Aug 2026299 PMAQI
9th Aug 20262910 PMAQI
9th Aug 20262711 PMAQI
10th Aug 20262712 AMAQI
10th Aug 2026421 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026293 AMAQI
10th Aug 2026314 AMAQI

27°C24/30°C

10th Aug 2026295 AMAQI
10th Aug 2026296 AMAQI
10th Aug 2026277 AMAQI
10th Aug 2026278 AMAQI
10th Aug 2026299 AMAQI
10th Aug 20262910 AMAQI
10th Aug 20262711 AMAQI
10th Aug 20262512 PMAQI
10th Aug 2026231 PMAQI
10th Aug 2026252 PMAQI
10th Aug 2026253 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026255 PMAQI
10th Aug 2026256 PMAQI
10th Aug 2026257 PMAQI
10th Aug 2026258 PMAQI
10th Aug 2026239 PMAQI
10th Aug 20262110 PMAQI
10th Aug 20262311 PMAQI
11th Aug 20262112 AMAQI
11th Aug 2026211 AMAQI
11th Aug 2026252 AMAQI
11th Aug 2026253 AMAQI
11th Aug 2026254 AMAQI

27°C24/30°C

11th Aug 2026255 AMAQI
11th Aug 2026216 AMAQI
11th Aug 2026257 AMAQI
11th Aug 2026218 AMAQI
11th Aug 2026219 AMAQI
11th Aug 20262310 AMAQI
11th Aug 20262111 AMAQI
11th Aug 20262712 PMAQI
11th Aug 2026211 PMAQI
11th Aug 2026252 PMAQI
11th Aug 2026253 PMAQI
11th Aug 2026294 PMAQI
11th Aug 2026295 PMAQI
11th Aug 2026256 PMAQI
11th Aug 2026217 PMAQI
11th Aug 2026218 PMAQI
11th Aug 2026219 PMAQI
11th Aug 20262110 PMAQI
11th Aug 20262111 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026251 AMAQI
12th Aug 2026252 AMAQI
12th Aug 2026213 AMAQI
12th Aug 2026214 AMAQI

25°C21/30°C

12th Aug 2026255 AMAQI
12th Aug 2026256 AMAQI
12th Aug 2026217 AMAQI
12th Aug 2026218 AMAQI
12th Aug 2026219 AMAQI
12th Aug 20262110 AMAQI
12th Aug 20262511 AMAQI
12th Aug 20262912 PMAQI
12th Aug 2026331 PMAQI
12th Aug 2026292 PMAQI
12th Aug 2026213 PMAQI
12th Aug 2026294 PMAQI
12th Aug 2026295 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 20262112 AMAQI
13th Aug 2026211 AMAQI
13th Aug 2026212 AMAQI
13th Aug 2026213 AMAQI
13th Aug 2026214 AMAQI

24°C20/30°C

13th Aug 2026295 AMAQI
13th Aug 2026296 AMAQI
13th Aug 2026257 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026259 AMAQI
13th Aug 20262510 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262912 PMAQI
13th Aug 2026291 PMAQI
13th Aug 2026292 PMAQI
13th Aug 2026253 PMAQI
13th Aug 2026294 PMAQI
13th Aug 2026275 PMAQI
13th Aug 2026236 PMAQI
13th Aug 2026217 PMAQI
13th Aug 2026238 PMAQI
13th Aug 2026239 PMAQI
13th Aug 20262510 PMAQI
13th Aug 20262511 PMAQI
14th Aug 20262512 AMAQI
14th Aug 2026251 AMAQI
14th Aug 2026252 AMAQI
14th Aug 2026273 AMAQI
14th Aug 2026274 AMAQI

25°C23/29°C

14th Aug 2026295 AMAQI
14th Aug 2026286 AMAQI
14th Aug 2026307 AMAQI
14th Aug 2026318 AMAQI
14th Aug 2026339 AMAQI
14th Aug 20263310 AMAQI
14th Aug 20263111 AMAQI
14th Aug 20263112 PMAQI
14th Aug 2026331 PMAQI
14th Aug 2026292 PMAQI
14th Aug 2026293 PMAQI
14th Aug 2026294 PMAQI
14th Aug 2026295 PMAQI
14th Aug 2026256 PMAQI
14th Aug 2026257 PMAQI
14th Aug 2026238 PMAQI
14th Aug 2026239 PMAQI
14th Aug 20262310 PMAQI
14th Aug 20262111 PMAQI
15th Aug 20262112 AMAQI
15th Aug 2026251 AMAQI
15th Aug 2026322 AMAQI
15th Aug 2026273 AMAQI
15th Aug 2026254 AMAQI

25°C23/29°C

15th Aug 2026255 AMAQI
15th Aug 2026256 AMAQI
15th Aug 2026217 AMAQI
15th Aug 2026218 AMAQI
15th Aug 2026219 AMAQI
15th Aug 20262310 AMAQI
15th Aug 20262111 AMAQI
15th Aug 20262912 PMAQI
15th Aug 2026251 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026273 PMAQI
15th Aug 2026214 PMAQI
15th Aug 2026275 PMAQI
15th Aug 2026296 PMAQI
15th Aug 2026217 PMAQI
15th Aug 2026258 PMAQI
15th Aug 2026299 PMAQI
15th Aug 20262910 PMAQI
15th Aug 20262511 PMAQI
16th Aug 20262112 AMAQI
16th Aug 2026211 AMAQI
16th Aug 2026292 AMAQI
16th Aug 2026253 AMAQI
16th Aug 2026214 AMAQI

25°C23/29°C

16th Aug 2026215 AMAQI
16th Aug 2026216 AMAQI
16th Aug 2026217 AMAQI
16th Aug 2026258 AMAQI
16th Aug 2026259 AMAQI
16th Aug 20262510 AMAQI
16th Aug 20262511 AMAQI
16th Aug 20262512 PMAQI
16th Aug 2026291 PMAQI
16th Aug 2026212 PMAQI
16th Aug 2026273 PMAQI
16th Aug 2026254 PMAQI
16th Aug 2026255 PMAQI
16th Aug 2026336 PMAQI
16th Aug 2026297 PMAQI
16th Aug 2026318 PMAQI
16th Aug 2026259 PMAQI
16th Aug 20262110 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

25°C23/28°C

17th Aug 2026255 AMAQI
5 AM
17th Aug 2026296 AMAQI
17th Aug 2026337 AMAQI
17th Aug 2026258 AMAQI
17th Aug 2026259 AMAQI
17th Aug 20262510 AMAQI
17th Aug 20262511 AMAQI
17th Aug 20262512 PMAQI
12 PM
17th Aug 2026211 PMAQI
17th Aug 2026292 PMAQI
17th Aug 2026253 PMAQI
17th Aug 2026254 PMAQI
17th Aug 2026255 PMAQI
17th Aug 2026216 PMAQI
17th Aug 2026237 PMAQI
7 PM
17th Aug 2026218 PMAQI
17th Aug 2026219 PMAQI
17th Aug 20262110 PMAQI
17th Aug 20262511 PMAQI
12 AM
4 AM

14°C14/15°C

Day time
Avg. Highest Time
11 AM - 2 PM

34AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
7 AM - 9 AM

30AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 2 PM (Avg. 34), while the lowest AQI was between 7 AM to 9 AM (Avg. 30).
Night time
Avg. Highest Time
1 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM - 4 AM

31AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 33), while the lowest AQI was between 3 AM to 4 AM (Avg. 31).

2026 Days Vs Air Quality

Yamatemachi, Iwakuni, Yamaguchi, Japan

2026

86%

197

14%

32

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

Good
197 Days
Moderate
32 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2026, 86% 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

Yamatemachi, Iwakuni, 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
19AQI (US)
2nd January 2026
15AQI (US)
3rd January 2026
20AQI (US)
4th January 2026
32AQI (US)
5th January 2026
43AQI (US)
6th January 2026
29AQI (US)
7th January 2026
29AQI (US)
8th January 2026
32AQI (US)
9th January 2026
19AQI (US)
10th January 2026
26AQI (US)
11th January 2026
26AQI (US)
12th January 2026
20AQI (US)
13th January 2026
30AQI (US)
14th January 2026
26AQI (US)
15th January 2026
40AQI (US)
16th January 2026
62AQI (US)
17th January 2026
63AQI (US)
18th January 2026
63AQI (US)
19th January 2026
71AQI (US)
20th January 2026
29AQI (US)
21st January 2026
10AQI (US)
22nd January 2026
19AQI (US)
23rd January 2026
35AQI (US)
24th January 2026
44AQI (US)
25th January 2026
40AQI (US)
26th January 2026
22AQI (US)
27th January 2026
39AQI (US)
28th January 2026
32AQI (US)
29th January 2026
34AQI (US)
30th January 2026
23AQI (US)
31st January 2026
16AQI (US)
1st February 2026
41AQI (US)
2nd February 2026
42AQI (US)
3rd February 2026
28AQI (US)
4th February 2026
36AQI (US)
5th February 2026
44AQI (US)
6th February 2026
45AQI (US)
7th February 2026
26AQI (US)
8th February 2026
27AQI (US)
9th February 2026
36AQI (US)
10th February 2026
41AQI (US)
11th February 2026
21AQI (US)
12th February 2026
35AQI (US)
13th February 2026
53AQI (US)
14th February 2026
60AQI (US)
15th February 2026
50AQI (US)
16th February 2026
52AQI (US)
17th February 2026
24AQI (US)
18th February 2026
27AQI (US)
19th February 2026
47AQI (US)
20th February 2026
43AQI (US)
21st February 2026
54AQI (US)
22nd February 2026
46AQI (US)
23rd February 2026
42AQI (US)
24th February 2026
30AQI (US)
25th February 2026
24AQI (US)
26th February 2026
12AQI (US)
27th February 2026
50AQI (US)
28th February 2026
32AQI (US)
1st March 2026
36AQI (US)
2nd March 2026
59AQI (US)
3rd March 2026
37AQI (US)
4th March 2026
42AQI (US)
5th March 2026
49AQI (US)
6th March 2026
50AQI (US)
7th March 2026
45AQI (US)
8th March 2026
38AQI (US)
9th March 2026
41AQI (US)
10th March 2026
58AQI (US)
11th March 2026
54AQI (US)
12th March 2026
57AQI (US)
13th March 2026
36AQI (US)
14th March 2026
41AQI (US)
15th March 2026
58AQI (US)
16th March 2026
50AQI (US)
17th March 2026
41AQI (US)
18th March 2026
48AQI (US)
19th March 2026
49AQI (US)
20th March 2026
53AQI (US)
21st March 2026
40AQI (US)
22nd March 2026
49AQI (US)
23rd March 2026
33AQI (US)
24th March 2026
44AQI (US)
25th March 2026
60AQI (US)
26th March 2026
34AQI (US)
27th March 2026
48AQI (US)
28th March 2026
66AQI (US)
29th March 2026
66AQI (US)
30th March 2026
66AQI (US)
31st March 2026
16AQI (US)
1st April 2026
11AQI (US)
2nd April 2026
52AQI (US)
3rd April 2026
48AQI (US)
4th April 2026
43AQI (US)
5th April 2026
39AQI (US)
6th April 2026
48AQI (US)
7th April 2026
23AQI (US)
8th April 2026
22AQI (US)
9th April 2026
33AQI (US)
10th April 2026
45AQI (US)
11th April 2026
30AQI (US)
12th April 2026
34AQI (US)
13th April 2026
37AQI (US)
14th April 2026
41AQI (US)
15th April 2026
27AQI (US)
16th April 2026
21AQI (US)
17th April 2026
33AQI (US)
18th April 2026
29AQI (US)
19th April 2026
30AQI (US)
20th April 2026
34AQI (US)
21st April 2026
37AQI (US)
22nd April 2026
45AQI (US)
23rd April 2026
34AQI (US)
24th April 2026
28AQI (US)
25th April 2026
46AQI (US)
26th April 2026
49AQI (US)
27th April 2026
50AQI (US)
28th April 2026
48AQI (US)
29th April 2026
42AQI (US)
30th April 2026
28AQI (US)
1st May 2026
47AQI (US)
2nd May 2026
53AQI (US)
3rd May 2026
36AQI (US)
4th May 2026
23AQI (US)
5th May 2026
24AQI (US)
6th May 2026
28AQI (US)
7th May 2026
30AQI (US)
8th May 2026
26AQI (US)
9th May 2026
27AQI (US)
10th May 2026
29AQI (US)
11th May 2026
30AQI (US)
12th May 2026
28AQI (US)
13th May 2026
36AQI (US)
14th May 2026
29AQI (US)
15th May 2026
32AQI (US)
16th May 2026
77AQI (US)
17th May 2026
63AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
60AQI (US)
21st May 2026
65AQI (US)
22nd May 2026
70AQI (US)
23rd May 2026
62AQI (US)
24th May 2026
62AQI (US)
25th May 2026
54AQI (US)
26th May 2026
41AQI (US)
27th May 2026
24AQI (US)
28th May 2026
25AQI (US)
29th May 2026
21AQI (US)
30th May 2026
23AQI (US)
31st May 2026
27AQI (US)
1st June 2026
27AQI (US)
2nd June 2026
21AQI (US)
3rd June 2026
16AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
19AQI (US)
8th June 2026
11AQI (US)
9th June 2026
24AQI (US)
10th June 2026
22AQI (US)
11th June 2026
21AQI (US)
12th June 2026
19AQI (US)
13th June 2026
25AQI (US)
14th June 2026
36AQI (US)
15th June 2026
49AQI (US)
16th June 2026
33AQI (US)
17th June 2026
26AQI (US)
18th June 2026
28AQI (US)
19th June 2026
50AQI (US)
20th June 2026
32AQI (US)
21st June 2026
15AQI (US)
22nd June 2026
15AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
21AQI (US)
25th June 2026
26AQI (US)
26th June 2026
30AQI (US)
27th June 2026
26AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
39AQI (US)
1st July 2026
34AQI (US)
2nd July 2026
14AQI (US)
3rd July 2026
17AQI (US)
4th July 2026
24AQI (US)
5th July 2026
16AQI (US)
6th July 2026
10AQI (US)
7th July 2026
20AQI (US)
8th July 2026
13AQI (US)
9th July 2026
14AQI (US)
10th July 2026
26AQI (US)
11th July 2026
26AQI (US)
12th July 2026
25AQI (US)
13th July 2026
27AQI (US)
14th July 2026
27AQI (US)
15th July 2026
24AQI (US)
16th July 2026
23AQI (US)
17th July 2026
32AQI (US)
18th July 2026
44AQI (US)
19th July 2026
45AQI (US)
20th July 2026
51AQI (US)
21st July 2026
60AQI (US)
22nd July 2026
56AQI (US)
23rd July 2026
42AQI (US)
24th July 2026
44AQI (US)
25th July 2026
38AQI (US)
26th July 2026
24AQI (US)
27th July 2026
31AQI (US)
28th July 2026
29AQI (US)
29th July 2026
25AQI (US)
30th July 2026
26AQI (US)
31st July 2026
24AQI (US)
1st August 2026
26AQI (US)
2nd August 2026
27AQI (US)
3rd August 2026
36AQI (US)
4th August 2026
37AQI (US)
5th August 2026
33AQI (US)
6th August 2026
27AQI (US)
7th August 2026
25AQI (US)
8th August 2026
24AQI (US)
9th August 2026
24AQI (US)
10th August 2026
27AQI (US)
11th August 2026
23AQI (US)
12th August 2026
24AQI (US)
13th August 2026
25AQI (US)
14th August 2026
28AQI (US)
15th August 2026
25AQI (US)
16th August 2026
25AQI (US)
17th August 2026
25AQI (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

33AQI (US)

38AQI (US)

47AQI (US)

36AQI (US)

40AQI (US)

26AQI (US)

29AQI (US)

27AQI (US)

No. of days

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

202635AQI (US)

27
4
24
4
21
10
29
1
21
10
30
28
3
17
197
32

Highest AQI (US) recorded in

March

47AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202543AQI (US)

28
3
25
3
20
11
20
10
22
9
15
15
16
15
30
1
30
18
13
20
10
23
8
267
98

Highest AQI (US) recorded in

July

52AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202438AQI (US)

29
1
23
6
24
7
16
14
23
8
25
5
28
3
23
8
26
4
30
1
26
4
31
304
61

Highest AQI (US) recorded in

April

51AQI (US)

Lowest AQI (US) recorded in

December

31AQI (US)

202341AQI (US)

23
6
1
28
17
14
12
18
21
10
20
10
27
4
29
2
27
3
26
5
21
8
25
6
276
86
1

Highest AQI (US) recorded in

April

52AQI (US)

Lowest AQI (US) recorded in

February

31AQI (US)

202241AQI (US)

27
3
19
2
20
11
12
5
15
16
19
11
15
6
1
25
4
27
4
23
7
30
1
233
70

Highest AQI (US) recorded in

May

54AQI (US)

Lowest AQI (US) recorded in

August

27AQI (US)

202140AQI (US)

23
7
20
8
22
7
17
4
23
8
11
19
27
4
27
4
24
6
24
7
21
9
29
2
268
85

Highest AQI (US) recorded in

June

51AQI (US)

Lowest AQI (US) recorded in

December

34AQI (US)

202037AQI (US)

11
2
15
6
13
5
18
12
28
3
13
7
18
1
26
5
25
5
26
5
193
51

Highest AQI (US) recorded in

June

45AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
43AQI (US)
Least Polluted Year Recorded
2026(Avg.)
35AQI (US)

Yamatemachi's annual 2026 AQI (US) (35) shows an average percentage change of -12.2% (improved AQI (US)) compared to previous years: 2020 (37), 2021 (40), 2022 (41), 2023 (41), 2024 (38), 2025 (43).