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HistoryAQIPM2.5PM10COSO2NO2O3

Ozumachi, 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+

September Air Quality Analysis

Ozumachi, Iwakuni, Yamaguchi, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Sep 2021
69AQI
Lowest AQI recorded on
20th Sep 2024
16AQI

Same Day Analysis (23rd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 29 of Good air quality, showing improvement over 2022 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 24th Sep - 25th Sep 2025

Ozumachi, Iwakuni, Yamaguchi, Japan

AQI
Day
Night
.

5 AM24th Sep 2025

6 PM

4 AM25th Sep 2025

Day time
Avg. Highest Time
5PM24th Sep

49AQI

Avg. Lowest Time
7AM24th Sep

26AQI

Night time
Avg. Highest Time
7PM24th Sep

50AQI

Avg. Lowest Time
3AM25th Sep

26AQI

In the last 24 hours,

Ozumachi's AQI reached its highest point of 50 at 7 PM during the Night, while the lowest point, 26, was recorded at 3 AM during the Night between 24th Sep and 25th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Ozumachi, Iwakuni, Yamaguchi, Japan

AugSep
26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th
Day
Night
26th Aug 2025455 AMAQI
26th Aug 2025436 AMAQI
26th Aug 2025457 AMAQI
26th Aug 2025458 AMAQI
26th Aug 2025209 AMAQI
26th Aug 20253010 AMAQI
26th Aug 20254111 AMAQI
26th Aug 20253612 PMAQI
26th Aug 2025361 PMAQI
26th Aug 2025292 PMAQI
26th Aug 2025443 PMAQI
26th Aug 2025444 PMAQI
26th Aug 2025305 PMAQI
26th Aug 2025336 PMAQI
26th Aug 2025377 PMAQI
26th Aug 2025518 PMAQI
26th Aug 2025429 PMAQI
26th Aug 20254310 PMAQI
26th Aug 20254111 PMAQI
27th Aug 20254512 AMAQI
27th Aug 2025461 AMAQI
27th Aug 2025442 AMAQI
27th Aug 2025453 AMAQI
27th Aug 2025454 AMAQI

27°C24/31°C

27th Aug 2025455 AMAQI
27th Aug 2025446 AMAQI
27th Aug 2025447 AMAQI
27th Aug 2025438 AMAQI
27th Aug 2025479 AMAQI
27th Aug 20254810 AMAQI
27th Aug 20255411 AMAQI
27th Aug 20255412 PMAQI
27th Aug 2025461 PMAQI
27th Aug 2025532 PMAQI
27th Aug 2025523 PMAQI
27th Aug 2025544 PMAQI
27th Aug 2025555 PMAQI
27th Aug 2025506 PMAQI
27th Aug 2025507 PMAQI
27th Aug 2025368 PMAQI
27th Aug 2025449 PMAQI
27th Aug 20254110 PMAQI
27th Aug 20254411 PMAQI
28th Aug 20254212 AMAQI
28th Aug 2025441 AMAQI
28th Aug 2025462 AMAQI
28th Aug 2025463 AMAQI
28th Aug 2025464 AMAQI

26°C23/30°C

28th Aug 2025465 AMAQI
28th Aug 2025476 AMAQI
28th Aug 2025467 AMAQI
28th Aug 2025478 AMAQI
28th Aug 2025389 AMAQI
28th Aug 20254810 AMAQI
28th Aug 20254911 AMAQI
28th Aug 20253812 PMAQI
28th Aug 2025441 PMAQI
28th Aug 2025462 PMAQI
28th Aug 2025503 PMAQI
28th Aug 2025504 PMAQI
28th Aug 2025485 PMAQI
28th Aug 2025516 PMAQI
28th Aug 2025487 PMAQI
28th Aug 2025468 PMAQI
28th Aug 2025499 PMAQI
28th Aug 20254710 PMAQI
28th Aug 20254711 PMAQI
29th Aug 20254612 AMAQI
29th Aug 2025471 AMAQI
29th Aug 2025462 AMAQI
29th Aug 2025483 AMAQI
29th Aug 2025484 AMAQI

26°C24/30°C

29th Aug 2025475 AMAQI
29th Aug 2025486 AMAQI
29th Aug 2025487 AMAQI
29th Aug 2025488 AMAQI
29th Aug 2025419 AMAQI
29th Aug 20254510 AMAQI
29th Aug 20254911 AMAQI
29th Aug 20254712 PMAQI
29th Aug 2025551 PMAQI
29th Aug 2025542 PMAQI
29th Aug 2025523 PMAQI
29th Aug 2025544 PMAQI
29th Aug 2025565 PMAQI
29th Aug 2025546 PMAQI
29th Aug 2025557 PMAQI
29th Aug 2025548 PMAQI
29th Aug 2025549 PMAQI
29th Aug 20255410 PMAQI
29th Aug 20255411 PMAQI
30th Aug 20255312 AMAQI
30th Aug 2025501 AMAQI
30th Aug 2025482 AMAQI
30th Aug 2025483 AMAQI
30th Aug 2025484 AMAQI

27°C24/30°C

30th Aug 2025485 AMAQI
30th Aug 2025486 AMAQI
30th Aug 2025487 AMAQI
30th Aug 2025488 AMAQI
30th Aug 2025449 AMAQI
30th Aug 20253410 AMAQI
30th Aug 20254611 AMAQI
30th Aug 20254812 PMAQI
30th Aug 2025461 PMAQI
30th Aug 2025512 PMAQI
30th Aug 2025503 PMAQI
30th Aug 2025564 PMAQI
30th Aug 2025545 PMAQI
30th Aug 2025486 PMAQI
30th Aug 2025557 PMAQI
30th Aug 2025478 PMAQI
30th Aug 2025459 PMAQI
30th Aug 20254310 PMAQI
30th Aug 20255011 PMAQI
31st Aug 20254812 AMAQI
31st Aug 2025501 AMAQI
31st Aug 2025502 AMAQI
31st Aug 2025503 AMAQI
31st Aug 2025484 AMAQI

27°C24/30°C

31st Aug 2025505 AMAQI
31st Aug 2025486 AMAQI
31st Aug 2025487 AMAQI
31st Aug 2025488 AMAQI
31st Aug 2025429 AMAQI
31st Aug 20254310 AMAQI
31st Aug 20255211 AMAQI
31st Aug 20254612 PMAQI
31st Aug 2025491 PMAQI
31st Aug 2025442 PMAQI
31st Aug 2025483 PMAQI
31st Aug 2025424 PMAQI
31st Aug 2025415 PMAQI
31st Aug 2025346 PMAQI
31st Aug 2025427 PMAQI
31st Aug 2025448 PMAQI
31st Aug 2025389 PMAQI
31st Aug 20254010 PMAQI
31st Aug 20254011 PMAQI
1st Sep 20254112 AMAQI
1st Sep 2025461 AMAQI
1st Sep 2025472 AMAQI
1st Sep 2025483 AMAQI
1st Sep 2025504 AMAQI

27°C24/30°C

1st Sep 2025505 AMAQI
1st Sep 2025496 AMAQI
1st Sep 2025497 AMAQI
1st Sep 2025508 AMAQI
1st Sep 2025259 AMAQI
1st Sep 20252710 AMAQI
1st Sep 20252311 AMAQI
1st Sep 20252812 PMAQI
1st Sep 2025301 PMAQI
1st Sep 2025352 PMAQI
1st Sep 2025343 PMAQI
1st Sep 2025314 PMAQI
1st Sep 2025295 PMAQI
1st Sep 2025356 PMAQI
1st Sep 2025327 PMAQI
1st Sep 2025328 PMAQI
1st Sep 2025369 PMAQI
1st Sep 20253610 PMAQI
1st Sep 20253611 PMAQI
2nd Sep 20254012 AMAQI
2nd Sep 2025431 AMAQI
2nd Sep 2025462 AMAQI
2nd Sep 2025443 AMAQI
2nd Sep 2025454 AMAQI

27°C25/31°C

2nd Sep 2025435 AMAQI
2nd Sep 2025446 AMAQI
2nd Sep 2025457 AMAQI
2nd Sep 2025448 AMAQI
2nd Sep 2025269 AMAQI
2nd Sep 20252410 AMAQI
2nd Sep 20252111 AMAQI
2nd Sep 20251912 PMAQI
2nd Sep 2025161 PMAQI
2nd Sep 2025232 PMAQI
2nd Sep 2025243 PMAQI
2nd Sep 2025184 PMAQI
2nd Sep 2025275 PMAQI
2nd Sep 2025226 PMAQI
2nd Sep 2025237 PMAQI
2nd Sep 2025288 PMAQI
2nd Sep 2025359 PMAQI
2nd Sep 20253210 PMAQI
2nd Sep 20253111 PMAQI
3rd Sep 20253612 AMAQI
3rd Sep 2025411 AMAQI
3rd Sep 2025442 AMAQI
3rd Sep 2025443 AMAQI
3rd Sep 2025404 AMAQI

27°C24/30°C

3rd Sep 2025405 AMAQI
3rd Sep 2025436 AMAQI
3rd Sep 2025407 AMAQI
3rd Sep 2025398 AMAQI
3rd Sep 2025289 AMAQI
3rd Sep 20253410 AMAQI
3rd Sep 20253311 AMAQI
3rd Sep 20253012 PMAQI
3rd Sep 2025421 PMAQI
3rd Sep 2025372 PMAQI
3rd Sep 2025323 PMAQI
3rd Sep 2025344 PMAQI
3rd Sep 2025325 PMAQI
3rd Sep 2025446 PMAQI
3rd Sep 2025347 PMAQI
3rd Sep 2025408 PMAQI
3rd Sep 2025409 PMAQI
3rd Sep 20253810 PMAQI
3rd Sep 20253711 PMAQI
4th Sep 20253412 AMAQI
4th Sep 2025381 AMAQI
4th Sep 2025432 AMAQI
4th Sep 2025413 AMAQI
4th Sep 2025404 AMAQI

26°C24/30°C

4th Sep 2025385 AMAQI
4th Sep 2025406 AMAQI
4th Sep 2025397 AMAQI
4th Sep 2025408 AMAQI
4th Sep 2025139 AMAQI
4th Sep 20252010 AMAQI
4th Sep 20251811 AMAQI
4th Sep 20251912 PMAQI
4th Sep 2025201 PMAQI
4th Sep 2025212 PMAQI
4th Sep 2025243 PMAQI
4th Sep 2025184 PMAQI
4th Sep 2025275 PMAQI
4th Sep 2025206 PMAQI
4th Sep 2025127 PMAQI
4th Sep 2025158 PMAQI
4th Sep 2025249 PMAQI
4th Sep 20252210 PMAQI
4th Sep 20252611 PMAQI
5th Sep 20252112 AMAQI
5th Sep 2025211 AMAQI
5th Sep 2025382 AMAQI
5th Sep 2025383 AMAQI
5th Sep 2025364 AMAQI

25°C24/27°C

5th Sep 2025365 AMAQI
5th Sep 2025356 AMAQI
5th Sep 2025357 AMAQI
5th Sep 2025358 AMAQI
5th Sep 2025169 AMAQI
5th Sep 20252010 AMAQI
5th Sep 20251411 AMAQI
5th Sep 20251612 PMAQI
5th Sep 2025161 PMAQI
5th Sep 2025172 PMAQI
5th Sep 2025223 PMAQI
5th Sep 2025264 PMAQI
5th Sep 2025215 PMAQI
5th Sep 2025196 PMAQI
5th Sep 2025207 PMAQI
5th Sep 2025208 PMAQI
5th Sep 2025239 PMAQI
5th Sep 20252210 PMAQI
5th Sep 20252211 PMAQI
6th Sep 20252112 AMAQI
6th Sep 2025221 AMAQI
6th Sep 2025232 AMAQI
6th Sep 2025233 AMAQI
6th Sep 2025244 AMAQI

27°C24/32°C

6th Sep 2025265 AMAQI
6th Sep 2025266 AMAQI
6th Sep 2025267 AMAQI
6th Sep 2025268 AMAQI
6th Sep 2025229 AMAQI
6th Sep 20252410 AMAQI
6th Sep 20252411 AMAQI
6th Sep 20252412 PMAQI
6th Sep 2025261 PMAQI
6th Sep 2025252 PMAQI
6th Sep 2025313 PMAQI
6th Sep 2025264 PMAQI
6th Sep 2025295 PMAQI
6th Sep 2025286 PMAQI
6th Sep 2025277 PMAQI
6th Sep 2025288 PMAQI
6th Sep 2025269 PMAQI
6th Sep 20252510 PMAQI
6th Sep 20252411 PMAQI
7th Sep 20252812 AMAQI
7th Sep 2025251 AMAQI
7th Sep 2025232 AMAQI
7th Sep 2025233 AMAQI
7th Sep 2025244 AMAQI

26°C24/29°C

7th Sep 2025245 AMAQI
7th Sep 2025246 AMAQI
7th Sep 2025247 AMAQI
7th Sep 2025248 AMAQI
7th Sep 2025329 AMAQI
7th Sep 20253310 AMAQI
7th Sep 20253311 AMAQI
7th Sep 20253912 PMAQI
7th Sep 2025321 PMAQI
7th Sep 2025392 PMAQI
7th Sep 2025353 PMAQI
7th Sep 2025364 PMAQI
7th Sep 2025405 PMAQI
7th Sep 2025416 PMAQI
7th Sep 2025507 PMAQI
7th Sep 2025368 PMAQI
7th Sep 2025329 PMAQI
7th Sep 20253010 PMAQI
7th Sep 20253811 PMAQI
8th Sep 20253612 AMAQI
8th Sep 2025281 AMAQI
8th Sep 2025262 AMAQI
8th Sep 2025253 AMAQI
8th Sep 2025254 AMAQI

27°C24/32°C

8th Sep 2025265 AMAQI
8th Sep 2025266 AMAQI
8th Sep 2025277 AMAQI
8th Sep 2025278 AMAQI
8th Sep 2025299 AMAQI
8th Sep 20253510 AMAQI
8th Sep 20253211 AMAQI
8th Sep 20253012 PMAQI
8th Sep 2025361 PMAQI
8th Sep 2025322 PMAQI
8th Sep 2025373 PMAQI
8th Sep 2025414 PMAQI
8th Sep 2025345 PMAQI
8th Sep 2025376 PMAQI
8th Sep 2025407 PMAQI
8th Sep 2025348 PMAQI
8th Sep 2025339 PMAQI
8th Sep 20253010 PMAQI
8th Sep 20252911 PMAQI
9th Sep 20253212 AMAQI
9th Sep 2025301 AMAQI
9th Sep 2025282 AMAQI
9th Sep 2025293 AMAQI
9th Sep 2025284 AMAQI

27°C25/31°C

9th Sep 2025305 AMAQI
9th Sep 2025326 AMAQI
9th Sep 2025307 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025339 AMAQI
9th Sep 20252710 AMAQI
9th Sep 20252611 AMAQI
9th Sep 20252512 PMAQI
9th Sep 2025371 PMAQI
9th Sep 2025202 PMAQI
9th Sep 2025323 PMAQI
9th Sep 2025214 PMAQI
9th Sep 2025265 PMAQI
9th Sep 2025226 PMAQI
9th Sep 2025307 PMAQI
9th Sep 2025248 PMAQI
9th Sep 2025229 PMAQI
9th Sep 20252510 PMAQI
9th Sep 20252611 PMAQI
10th Sep 20252912 AMAQI
10th Sep 2025301 AMAQI
10th Sep 2025302 AMAQI
10th Sep 2025283 AMAQI
10th Sep 2025304 AMAQI

27°C23/31°C

10th Sep 2025295 AMAQI
10th Sep 2025306 AMAQI
10th Sep 2025307 AMAQI
10th Sep 2025298 AMAQI
10th Sep 2025359 AMAQI
10th Sep 20254410 AMAQI
10th Sep 20253311 AMAQI
10th Sep 20253812 PMAQI
10th Sep 2025341 PMAQI
10th Sep 2025362 PMAQI
10th Sep 2025303 PMAQI
10th Sep 2025284 PMAQI
10th Sep 2025255 PMAQI
10th Sep 2025326 PMAQI
10th Sep 2025307 PMAQI
10th Sep 2025328 PMAQI
10th Sep 2025279 PMAQI
10th Sep 20252810 PMAQI
10th Sep 20253011 PMAQI
11th Sep 20252812 AMAQI
11th Sep 2025341 AMAQI
11th Sep 2025322 AMAQI
11th Sep 2025343 AMAQI
11th Sep 2025324 AMAQI

25°C23/26°C

11th Sep 2025335 AMAQI
11th Sep 2025326 AMAQI
11th Sep 2025327 AMAQI
11th Sep 2025328 AMAQI
11th Sep 2025189 AMAQI
11th Sep 20252710 AMAQI
11th Sep 20252411 AMAQI
11th Sep 20253512 PMAQI
11th Sep 2025381 PMAQI
11th Sep 2025422 PMAQI
11th Sep 2025343 PMAQI
11th Sep 2025304 PMAQI
11th Sep 2025285 PMAQI
11th Sep 2025226 PMAQI
11th Sep 2025227 PMAQI
11th Sep 2025288 PMAQI
11th Sep 2025319 PMAQI
11th Sep 20252810 PMAQI
11th Sep 20252611 PMAQI
12th Sep 20252612 AMAQI
12th Sep 2025311 AMAQI
12th Sep 2025322 AMAQI
12th Sep 2025323 AMAQI
12th Sep 2025324 AMAQI

25°C23/28°C

12th Sep 2025315 AMAQI
12th Sep 2025326 AMAQI
12th Sep 2025327 AMAQI
12th Sep 2025328 AMAQI
12th Sep 2025249 AMAQI
12th Sep 20252010 AMAQI
12th Sep 20251511 AMAQI
12th Sep 20252312 PMAQI
12th Sep 2025221 PMAQI
12th Sep 2025292 PMAQI
12th Sep 2025263 PMAQI
12th Sep 2025314 PMAQI
12th Sep 2025265 PMAQI
12th Sep 2025376 PMAQI
12th Sep 2025227 PMAQI
12th Sep 2025248 PMAQI
12th Sep 2025279 PMAQI
12th Sep 20252510 PMAQI
12th Sep 20252411 PMAQI
13th Sep 20252812 AMAQI
13th Sep 2025321 AMAQI
13th Sep 2025322 AMAQI
13th Sep 2025323 AMAQI
13th Sep 2025314 AMAQI

25°C23/28°C

13th Sep 2025305 AMAQI
13th Sep 2025306 AMAQI
13th Sep 2025317 AMAQI
13th Sep 2025318 AMAQI
13th Sep 2025229 AMAQI
13th Sep 20252710 AMAQI
13th Sep 20253511 AMAQI
13th Sep 20253012 PMAQI
13th Sep 2025321 PMAQI
13th Sep 2025342 PMAQI
13th Sep 2025323 PMAQI
13th Sep 2025314 PMAQI
13th Sep 2025285 PMAQI
13th Sep 2025346 PMAQI
13th Sep 2025457 PMAQI
13th Sep 2025328 PMAQI
13th Sep 2025309 PMAQI
13th Sep 20253210 PMAQI
13th Sep 20253211 PMAQI
14th Sep 20253212 AMAQI
14th Sep 2025301 AMAQI
14th Sep 2025322 AMAQI
14th Sep 2025313 AMAQI
14th Sep 2025314 AMAQI

26°C24/28°C

14th Sep 2025315 AMAQI
14th Sep 2025326 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025239 AMAQI
14th Sep 20251710 AMAQI
14th Sep 20252011 AMAQI
14th Sep 20252412 PMAQI
14th Sep 2025201 PMAQI
14th Sep 2025242 PMAQI
14th Sep 2025253 PMAQI
14th Sep 2025264 PMAQI
14th Sep 2025265 PMAQI
14th Sep 2025326 PMAQI
14th Sep 2025307 PMAQI
14th Sep 2025288 PMAQI
14th Sep 2025289 PMAQI
14th Sep 20253010 PMAQI
14th Sep 20253011 PMAQI
15th Sep 20253012 AMAQI
15th Sep 2025321 AMAQI
15th Sep 2025322 AMAQI
15th Sep 2025333 AMAQI
15th Sep 2025314 AMAQI

27°C24/30°C

15th Sep 2025305 AMAQI
15th Sep 2025316 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025308 AMAQI
15th Sep 2025289 AMAQI
15th Sep 20252310 AMAQI
15th Sep 20253911 AMAQI
15th Sep 20254412 PMAQI
15th Sep 2025491 PMAQI
15th Sep 2025482 PMAQI
15th Sep 2025493 PMAQI
15th Sep 2025434 PMAQI
15th Sep 2025345 PMAQI
15th Sep 2025366 PMAQI
15th Sep 2025327 PMAQI
15th Sep 2025328 PMAQI
15th Sep 2025349 PMAQI
15th Sep 20253410 PMAQI
15th Sep 20253111 PMAQI
16th Sep 20253012 AMAQI
16th Sep 2025341 AMAQI
16th Sep 2025322 AMAQI
16th Sep 2025323 AMAQI
16th Sep 2025334 AMAQI

26°C24/29°C

16th Sep 2025335 AMAQI
16th Sep 2025326 AMAQI
16th Sep 2025327 AMAQI
16th Sep 2025338 AMAQI
16th Sep 2025409 AMAQI
16th Sep 20254310 AMAQI
16th Sep 20254411 AMAQI
16th Sep 20255512 PMAQI
16th Sep 2025521 PMAQI
16th Sep 2025492 PMAQI
16th Sep 2025523 PMAQI
16th Sep 2025484 PMAQI
16th Sep 2025465 PMAQI
16th Sep 2025516 PMAQI
16th Sep 2025397 PMAQI
16th Sep 2025348 PMAQI
16th Sep 2025429 PMAQI
16th Sep 20254910 PMAQI
16th Sep 20254311 PMAQI
17th Sep 20254512 AMAQI
17th Sep 2025371 AMAQI
17th Sep 2025322 AMAQI
17th Sep 2025333 AMAQI
17th Sep 2025344 AMAQI

27°C24/30°C

17th Sep 2025355 AMAQI
17th Sep 2025356 AMAQI
17th Sep 2025367 AMAQI
17th Sep 2025368 AMAQI
17th Sep 2025569 AMAQI
17th Sep 20256610 AMAQI
17th Sep 20256011 AMAQI
17th Sep 20256212 PMAQI
17th Sep 2025561 PMAQI
17th Sep 2025352 PMAQI
17th Sep 2025283 PMAQI
17th Sep 2025284 PMAQI
17th Sep 2025325 PMAQI
17th Sep 2025406 PMAQI
17th Sep 2025307 PMAQI
17th Sep 2025328 PMAQI
17th Sep 2025349 PMAQI
17th Sep 20253410 PMAQI
17th Sep 20253011 PMAQI
18th Sep 20252812 AMAQI
18th Sep 2025301 AMAQI
18th Sep 2025342 AMAQI
18th Sep 2025353 AMAQI
18th Sep 2025374 AMAQI

27°C24/30°C

18th Sep 2025415 AMAQI
18th Sep 2025406 AMAQI
18th Sep 2025417 AMAQI
18th Sep 2025418 AMAQI
18th Sep 2025269 AMAQI
18th Sep 20251810 AMAQI
18th Sep 20252011 AMAQI
18th Sep 20252812 PMAQI
18th Sep 2025181 PMAQI
18th Sep 2025302 PMAQI
18th Sep 2025213 PMAQI
18th Sep 2025214 PMAQI
18th Sep 2025215 PMAQI
18th Sep 2025266 PMAQI
18th Sep 2025237 PMAQI
18th Sep 2025248 PMAQI
18th Sep 2025279 PMAQI
18th Sep 20252810 PMAQI
18th Sep 20252411 PMAQI
19th Sep 20252212 AMAQI
19th Sep 2025261 AMAQI
19th Sep 2025332 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025334 AMAQI

25°C23/28°C

19th Sep 2025325 AMAQI
19th Sep 2025326 AMAQI
19th Sep 2025327 AMAQI
19th Sep 2025328 AMAQI
19th Sep 2025229 AMAQI
19th Sep 20252410 AMAQI
19th Sep 20253011 AMAQI
19th Sep 20252712 PMAQI
19th Sep 2025211 PMAQI
19th Sep 2025222 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025284 PMAQI
19th Sep 2025245 PMAQI
19th Sep 2025246 PMAQI
19th Sep 2025247 PMAQI
19th Sep 2025378 PMAQI
19th Sep 2025299 PMAQI
19th Sep 20253010 PMAQI
19th Sep 20253111 PMAQI
20th Sep 20253012 AMAQI
20th Sep 2025321 AMAQI
20th Sep 2025292 AMAQI
20th Sep 2025303 AMAQI
20th Sep 2025284 AMAQI

23°C20/27°C

20th Sep 2025285 AMAQI
20th Sep 2025286 AMAQI
20th Sep 2025287 AMAQI
20th Sep 2025298 AMAQI
20th Sep 2025389 AMAQI
20th Sep 20254610 AMAQI
20th Sep 20255311 AMAQI
20th Sep 20255012 PMAQI
20th Sep 2025471 PMAQI
20th Sep 2025542 PMAQI
20th Sep 2025513 PMAQI
20th Sep 2025454 PMAQI
20th Sep 2025475 PMAQI
20th Sep 2025386 PMAQI
20th Sep 2025417 PMAQI
20th Sep 2025528 PMAQI
20th Sep 2025479 PMAQI
20th Sep 20254810 PMAQI
20th Sep 20253911 PMAQI
21st Sep 20252912 AMAQI
21st Sep 2025281 AMAQI
21st Sep 2025282 AMAQI
21st Sep 2025283 AMAQI
21st Sep 2025304 AMAQI

24°C23/26°C

21st Sep 2025325 AMAQI
21st Sep 2025336 AMAQI
21st Sep 2025327 AMAQI
21st Sep 2025328 AMAQI
21st Sep 2025229 AMAQI
21st Sep 20251610 AMAQI
21st Sep 20251911 AMAQI
21st Sep 20252212 PMAQI
21st Sep 2025211 PMAQI
21st Sep 2025172 PMAQI
21st Sep 2025183 PMAQI
21st Sep 2025204 PMAQI
21st Sep 2025165 PMAQI
21st Sep 2025146 PMAQI
21st Sep 2025167 PMAQI
21st Sep 2025198 PMAQI
21st Sep 2025229 PMAQI
21st Sep 20252210 PMAQI
21st Sep 20252411 PMAQI
22nd Sep 20252412 AMAQI
22nd Sep 2025261 AMAQI
22nd Sep 2025282 AMAQI
22nd Sep 2025293 AMAQI
22nd Sep 2025284 AMAQI

24°C20/27°C

22nd Sep 2025275 AMAQI
22nd Sep 2025276 AMAQI
22nd Sep 2025277 AMAQI
22nd Sep 2025288 AMAQI
22nd Sep 2025209 AMAQI
22nd Sep 20251810 AMAQI
22nd Sep 20252111 AMAQI
22nd Sep 20251812 PMAQI
22nd Sep 2025201 PMAQI
22nd Sep 2025192 PMAQI
22nd Sep 2025223 PMAQI
22nd Sep 2025264 PMAQI
22nd Sep 2025305 PMAQI
22nd Sep 2025306 PMAQI
22nd Sep 2025257 PMAQI
22nd Sep 2025248 PMAQI
22nd Sep 2025259 PMAQI
22nd Sep 20252610 PMAQI
22nd Sep 20252711 PMAQI
23rd Sep 20252712 AMAQI
23rd Sep 2025281 AMAQI
23rd Sep 2025272 AMAQI
23rd Sep 2025263 AMAQI
23rd Sep 2025264 AMAQI

22°C19/25°C

23rd Sep 2025245 AMAQI
23rd Sep 2025266 AMAQI
23rd Sep 2025257 AMAQI
23rd Sep 2025248 AMAQI
23rd Sep 2025309 AMAQI
23rd Sep 20253210 AMAQI
23rd Sep 20253211 AMAQI
23rd Sep 20253812 PMAQI
23rd Sep 2025301 PMAQI
23rd Sep 2025322 PMAQI
23rd Sep 2025353 PMAQI
23rd Sep 2025354 PMAQI
23rd Sep 2025315 PMAQI
23rd Sep 2025316 PMAQI
23rd Sep 2025337 PMAQI
23rd Sep 2025288 PMAQI
23rd Sep 2025269 PMAQI
23rd Sep 20252610 PMAQI
23rd Sep 20252611 PMAQI
24th Sep 20252612 AMAQI
24th Sep 2025261 AMAQI
24th Sep 2025262 AMAQI
24th Sep 2025263 AMAQI
24th Sep 2025264 AMAQI

22°C20/22°C

24th Sep 2025265 AMAQI
24th Sep 2025276 AMAQI
24th Sep 2025267 AMAQI
24th Sep 2025278 AMAQI
24th Sep 2025279 AMAQI
24th Sep 20253510 AMAQI
24th Sep 20254411 AMAQI
24th Sep 20254812 PMAQI
24th Sep 2025471 PMAQI
24th Sep 2025462 PMAQI
24th Sep 2025463 PMAQI
24th Sep 2025484 PMAQI
24th Sep 2025495 PMAQI
24th Sep 2025466 PMAQI
24th Sep 2025507 PMAQI
24th Sep 2025488 PMAQI
24th Sep 2025369 PMAQI
24th Sep 20253810 PMAQI
24th Sep 20253511 PMAQI
25th Sep 20253212 AMAQI
25th Sep 2025281 AMAQI
25th Sep 2025262 AMAQI
25th Sep 2025263 AMAQI
25th Sep 2025274 AMAQI

23°C22/26°C

25th Sep 2025285 AMAQI
5 AM
25th Sep 2025296 AMAQI
25th Sep 2025297 AMAQI
25th Sep 2025288 AMAQI
25th Sep 2025189 AMAQI
25th Sep 20251910 AMAQI
25th Sep 20251911 AMAQI
11 AM
25th Sep 20251412 PMAQI
25th Sep 2025161 PMAQI
6 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

35AQI

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

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 35), while the lowest AQI was between 9 AM to 9 AM (Avg. 29).
Night time
Avg. Highest Time
12 AM - 11 PM

34AQI

10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 34), while the lowest AQI was between 12 AM to 12 AM (Avg. 33).

2025 Days Vs Air Quality

Ozumachi, Iwakuni, Yamaguchi, Japan

2025

75%

200

25%

66

Total number of days with different AQI categories in last 268 days in 2025 (97 days remaining)

Good
200 Days
Moderate
66 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 75%

Health Risk Level:

Low

In 2025, 75% of 268 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

Ozumachi, Iwakuni, Yamaguchi, Japan

AQI levels in 2025

AQI
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 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
28AQI
2nd January 2025
32AQI
3rd January 2025
30AQI
4th January 2025
30AQI
5th January 2025
28AQI
6th January 2025
38AQI
7th January 2025
30AQI
8th January 2025
32AQI
9th January 2025
29AQI
10th January 2025
29AQI
11th January 2025
28AQI
12th January 2025
30AQI
13th January 2025
38AQI
14th January 2025
45AQI
15th January 2025
37AQI
16th January 2025
35AQI
17th January 2025
32AQI
18th January 2025
30AQI
19th January 2025
39AQI
20th January 2025
39AQI
21st January 2025
48AQI
22nd January 2025
58AQI
23rd January 2025
68AQI
24th January 2025
69AQI
25th January 2025
45AQI
26th January 2025
42AQI
27th January 2025
34AQI
28th January 2025
35AQI
29th January 2025
31AQI
30th January 2025
43AQI
31st January 2025
48AQI
1st February 2025
53AQI
2nd February 2025
35AQI
3rd February 2025
43AQI
4th February 2025
32AQI
5th February 2025
37AQI
6th February 2025
31AQI
7th February 2025
32AQI
8th February 2025
31AQI
9th February 2025
30AQI
10th February 2025
30AQI
11th February 2025
34AQI
12th February 2025
33AQI
13th February 2025
31AQI
14th February 2025
37AQI
15th February 2025
31AQI
16th February 2025
40AQI
17th February 2025
39AQI
18th February 2025
34AQI
19th February 2025
35AQI
20th February 2025
31AQI
21st February 2025
32AQI
22nd February 2025
35AQI
23rd February 2025
34AQI
24th February 2025
37AQI
25th February 2025
36AQI
26th February 2025
42AQI
27th February 2025
65AQI
28th February 2025
58AQI
1st March 2025
69AQI
2nd March 2025
75AQI
3rd March 2025
47AQI
4th March 2025
42AQI
5th March 2025
31AQI
6th March 2025
37AQI
7th March 2025
33AQI
8th March 2025
39AQI
9th March 2025
39AQI
10th March 2025
40AQI
11th March 2025
44AQI
12th March 2025
50AQI
13th March 2025
50AQI
14th March 2025
36AQI
15th March 2025
36AQI
16th March 2025
21AQI
17th March 2025
34AQI
18th March 2025
30AQI
19th March 2025
38AQI
20th March 2025
46AQI
21st March 2025
53AQI
22nd March 2025
64AQI
23rd March 2025
66AQI
24th March 2025
59AQI
25th March 2025
67AQI
26th March 2025
72AQI
27th March 2025
60AQI
28th March 2025
53AQI
29th March 2025
47AQI
30th March 2025
39AQI
31st March 2025
37AQI
1st April 2025
38AQI
2nd April 2025
32AQI
3rd April 2025
25AQI
4th April 2025
29AQI
5th April 2025
39AQI
6th April 2025
39AQI
7th April 2025
42AQI
8th April 2025
37AQI
9th April 2025
57AQI
10th April 2025
53AQI
11th April 2025
56AQI
12th April 2025
54AQI
13th April 2025
43AQI
14th April 2025
43AQI
15th April 2025
29AQI
16th April 2025
49AQI
17th April 2025
48AQI
18th April 2025
57AQI
19th April 2025
52AQI
20th April 2025
37AQI
21st April 2025
38AQI
22nd April 2025
48AQI
23rd April 2025
33AQI
24th April 2025
40AQI
25th April 2025
64AQI
26th April 2025
56AQI
27th April 2025
59AQI
28th April 2025
49AQI
29th April 2025
48AQI
30th April 2025
55AQI
1st May 2025
53AQI
2nd May 2025
40AQI
3rd May 2025
47AQI
4th May 2025
39AQI
5th May 2025
44AQI
6th May 2025
32AQI
7th May 2025
34AQI
8th May 2025
36AQI
9th May 2025
36AQI
10th May 2025
34AQI
11th May 2025
42AQI
12th May 2025
51AQI
13th May 2025
56AQI
14th May 2025
59AQI
15th May 2025
56AQI
16th May 2025
56AQI
17th May 2025
44AQI
18th May 2025
53AQI
19th May 2025
58AQI
20th May 2025
57AQI
21st May 2025
47AQI
22nd May 2025
42AQI
23rd May 2025
47AQI
24th May 2025
37AQI
25th May 2025
28AQI
26th May 2025
35AQI
27th May 2025
41AQI
28th May 2025
45AQI
29th May 2025
49AQI
30th May 2025
45AQI
31st May 2025
41AQI
1st June 2025
47AQI
2nd June 2025
53AQI
3rd June 2025
32AQI
4th June 2025
43AQI
5th June 2025
46AQI
6th June 2025
53AQI
7th June 2025
61AQI
8th June 2025
64AQI
9th June 2025
65AQI
10th June 2025
37AQI
11th June 2025
43AQI
12th June 2025
51AQI
13th June 2025
50AQI
14th June 2025
40AQI
15th June 2025
35AQI
16th June 2025
36AQI
17th June 2025
37AQI
18th June 2025
46AQI
19th June 2025
49AQI
20th June 2025
55AQI
21st June 2025
58AQI
22nd June 2025
61AQI
23rd June 2025
44AQI
24th June 2025
48AQI
25th June 2025
49AQI
26th June 2025
51AQI
27th June 2025
55AQI
28th June 2025
56AQI
29th June 2025
57AQI
30th June 2025
56AQI
1st July 2025
59AQI
2nd July 2025
78AQI
3rd July 2025
91AQI
4th July 2025
91AQI
5th July 2025
85AQI
6th July 2025
67AQI
7th July 2025
66AQI
8th July 2025
71AQI
9th July 2025
76AQI
10th July 2025
84AQI
11th July 2025
68AQI
12th July 2025
62AQI
13th July 2025
56AQI
14th July 2025
42AQI
15th July 2025
56AQI
16th July 2025
57AQI
17th July 2025
51AQI
18th July 2025
39AQI
19th July 2025
39AQI
20th July 2025
38AQI
21st July 2025
32AQI
22nd July 2025
31AQI
23rd July 2025
34AQI
24th July 2025
38AQI
25th July 2025
36AQI
26th July 2025
29AQI
27th July 2025
26AQI
28th July 2025
32AQI
29th July 2025
35AQI
30th July 2025
36AQI
31st July 2025
36AQI
1st August 2025
42AQI
2nd August 2025
41AQI
3rd August 2025
42AQI
4th August 2025
51AQI
5th August 2025
44AQI
6th August 2025
43AQI
7th August 2025
49AQI
8th August 2025
48AQI
9th August 2025
41AQI
10th August 2025
35AQI
11th August 2025
31AQI
12th August 2025
31AQI
13th August 2025
40AQI
14th August 2025
44AQI
15th August 2025
41AQI
16th August 2025
40AQI
17th August 2025
37AQI
18th August 2025
44AQI
19th August 2025
49AQI
20th August 2025
47AQI
21st August 2025
39AQI
22nd August 2025
39AQI
23rd August 2025
44AQI
24th August 2025
42AQI
25th August 2025
42AQI
26th August 2025
40AQI
27th August 2025
47AQI
28th August 2025
46AQI
29th August 2025
50AQI
30th August 2025
48AQI
31st August 2025
45AQI
1st September 2025
38AQI
2nd September 2025
32AQI
3rd September 2025
38AQI
4th September 2025
27AQI
5th September 2025
25AQI
6th September 2025
25AQI
7th September 2025
32AQI
8th September 2025
31AQI
9th September 2025
28AQI
10th September 2025
31AQI
11th September 2025
30AQI
12th September 2025
27AQI
13th September 2025
32AQI
14th September 2025
28AQI
15th September 2025
34AQI
16th September 2025
40AQI
17th September 2025
39AQI
18th September 2025
29AQI
19th September 2025
28AQI
20th September 2025
40AQI
21st September 2025
23AQI
22nd September 2025
25AQI
23rd September 2025
29AQI
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

38AQI

37AQI

47AQI

45AQI

45AQI

49AQI

53AQI

43AQI

31AQI

No. of days

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

202543AQI

28
3
25
3
21
10
20
10
22
9
16
14
15
16
30
1
23
200
66

Highest AQI recorded in

July

53AQI

Lowest AQI recorded in

September

31AQI

202438AQI

30
1
24
5
24
7
19
11
22
9
26
4
30
1
23
8
24
6
31
29
1
31
313
53

Highest AQI recorded in

April

49AQI

Lowest AQI recorded in

December

31AQI

202341AQI

25
5
1
28
21
10
16
14
21
10
19
11
26
5
29
2
26
4
26
5
23
6
26
5
286
77
1

Highest AQI recorded in

April

50AQI

Lowest AQI recorded in

August

32AQI

202240AQI

28
3
19
2
22
9
19
11
13
18
21
9
16
6
1
24
4
27
4
23
7
31
244
73

Highest AQI recorded in

May

54AQI

Lowest AQI recorded in

August

22AQI

202138AQI

25
6
20
8
24
5
18
3
24
7
12
18
20
11
27
4
25
5
25
6
29
1
31
280
74

Highest AQI recorded in

June

52AQI

Lowest AQI recorded in

December

29AQI

202036AQI

11
2
16
5
12
6
18
12
28
3
16
7
18
1
26
5
26
4
27
4
198
49

Highest AQI recorded in

June

45AQI

Lowest AQI recorded in

September

31AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
43AQI
Least Polluted Year Recorded
2020(Avg.)
36AQI

Ozumachi's annual 2025 AQI (43) shows an average percentage change of 12.9% (worsened AQI) compared to previous years: 2020 (36), 2021 (38), 2022 (40), 2023 (41), 2024 (38).