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HistoryAQIPM2.5PM10COSO2NO2O3

Yawata, Ichikawa, Chiba, 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+

October Air Quality Analysis

Yawata, Ichikawa, Chiba, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
22nd Oct 2022
69AQI
Lowest AQI recorded on
10th Oct 2023
19AQI

Same Day Analysis (11th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 11th Oct - 12th Oct 2025

Yawata, Ichikawa, Chiba, Japan

AQI
Day
Night
.

5 AM11th Oct 2025

5 PM

4 AM12th Oct 2025

Day time
Avg. Highest Time
6AM11th Oct

62AQI

Avg. Lowest Time
10AM11th Oct

34AQI

Night time
Avg. Highest Time
1AM12th Oct

45AQI

Avg. Lowest Time
12AM12th Oct

26AQI

In the last 24 hours,

Yawata's AQI reached its highest point of 62 at 6 AM during the Day, while the lowest point, 26, was recorded at 12 AM during the Night between 11th Oct and 12th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Yawata, Ichikawa, Chiba, Japan

SepOct
12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th
Day
Night
12th Sep 2025425 AMAQI
12th Sep 2025406 AMAQI
12th Sep 2025397 AMAQI
12th Sep 2025388 AMAQI
12th Sep 2025329 AMAQI
12th Sep 20253410 AMAQI
12th Sep 20252511 AMAQI
12th Sep 20252912 PMAQI
12th Sep 2025271 PMAQI
12th Sep 2025262 PMAQI
12th Sep 2025263 PMAQI
12th Sep 2025304 PMAQI
12th Sep 2025295 PMAQI
12th Sep 2025316 PMAQI
12th Sep 2025287 PMAQI
12th Sep 2025298 PMAQI
12th Sep 2025309 PMAQI
12th Sep 20253110 PMAQI
12th Sep 20253211 PMAQI
13th Sep 20253112 AMAQI
13th Sep 2025351 AMAQI
13th Sep 2025382 AMAQI
13th Sep 2025373 AMAQI
13th Sep 2025384 AMAQI

25°C23/28°C

13th Sep 2025365 AMAQI
13th Sep 2025366 AMAQI
13th Sep 2025367 AMAQI
13th Sep 2025358 AMAQI
13th Sep 2025279 AMAQI
13th Sep 20253010 AMAQI
13th Sep 20254111 AMAQI
13th Sep 20253912 PMAQI
13th Sep 2025371 PMAQI
13th Sep 2025282 PMAQI
13th Sep 2025263 PMAQI
13th Sep 2025284 PMAQI
13th Sep 2025265 PMAQI
13th Sep 2025206 PMAQI
13th Sep 2025247 PMAQI
13th Sep 2025258 PMAQI
13th Sep 2025289 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20253111 PMAQI
14th Sep 20252812 AMAQI
14th Sep 2025371 AMAQI
14th Sep 2025352 AMAQI
14th Sep 2025373 AMAQI
14th Sep 2025354 AMAQI

27°C24/30°C

14th Sep 2025365 AMAQI
14th Sep 2025346 AMAQI
14th Sep 2025357 AMAQI
14th Sep 2025368 AMAQI
14th Sep 2025319 AMAQI
14th Sep 20253110 AMAQI
14th Sep 20253511 AMAQI
14th Sep 20253212 PMAQI
14th Sep 2025381 PMAQI
14th Sep 2025392 PMAQI
14th Sep 2025443 PMAQI
14th Sep 2025434 PMAQI
14th Sep 2025505 PMAQI
14th Sep 2025486 PMAQI
14th Sep 2025487 PMAQI
14th Sep 2025458 PMAQI
14th Sep 2025419 PMAQI
14th Sep 20253810 PMAQI
14th Sep 20253711 PMAQI
15th Sep 20253612 AMAQI
15th Sep 2025341 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025353 AMAQI
15th Sep 2025344 AMAQI

29°C27/32°C

15th Sep 2025345 AMAQI
15th Sep 2025366 AMAQI
15th Sep 2025367 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025379 AMAQI
15th Sep 20254010 AMAQI
15th Sep 20254811 AMAQI
15th Sep 20254512 PMAQI
15th Sep 2025451 PMAQI
15th Sep 2025262 PMAQI
15th Sep 2025303 PMAQI
15th Sep 2025324 PMAQI
15th Sep 2025355 PMAQI
15th Sep 2025326 PMAQI
15th Sep 2025247 PMAQI
15th Sep 2025288 PMAQI
15th Sep 2025329 PMAQI
15th Sep 20253310 PMAQI
15th Sep 20253611 PMAQI
16th Sep 20253512 AMAQI
16th Sep 2025341 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025343 AMAQI
16th Sep 2025364 AMAQI

28°C26/32°C

16th Sep 2025365 AMAQI
16th Sep 2025366 AMAQI
16th Sep 2025367 AMAQI
16th Sep 2025368 AMAQI
16th Sep 2025429 AMAQI
16th Sep 20254510 AMAQI
16th Sep 20255311 AMAQI
16th Sep 20256612 PMAQI
16th Sep 2025621 PMAQI
16th Sep 2025622 PMAQI
16th Sep 2025583 PMAQI
16th Sep 2025474 PMAQI
16th Sep 2025285 PMAQI
16th Sep 2025216 PMAQI
16th Sep 2025237 PMAQI
16th Sep 2025298 PMAQI
16th Sep 2025289 PMAQI
16th Sep 20252910 PMAQI
16th Sep 20253011 PMAQI
17th Sep 20253112 AMAQI
17th Sep 2025341 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025343 AMAQI
17th Sep 2025384 AMAQI

29°C27/32°C

17th Sep 2025425 AMAQI
17th Sep 2025426 AMAQI
17th Sep 2025427 AMAQI
17th Sep 2025428 AMAQI
17th Sep 2025519 AMAQI
17th Sep 20255710 AMAQI
17th Sep 20255411 AMAQI
17th Sep 20255412 PMAQI
17th Sep 2025571 PMAQI
17th Sep 2025602 PMAQI
17th Sep 2025603 PMAQI
17th Sep 2025574 PMAQI
17th Sep 2025585 PMAQI
17th Sep 2025596 PMAQI
17th Sep 2025627 PMAQI
17th Sep 2025538 PMAQI
17th Sep 2025559 PMAQI
17th Sep 20256010 PMAQI
17th Sep 20255811 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025411 AMAQI
18th Sep 2025372 AMAQI
18th Sep 2025363 AMAQI
18th Sep 2025404 AMAQI

29°C27/33°C

18th Sep 2025445 AMAQI
18th Sep 2025436 AMAQI
18th Sep 2025447 AMAQI
18th Sep 2025438 AMAQI
18th Sep 2025629 AMAQI
18th Sep 20256910 AMAQI
18th Sep 20257211 AMAQI
18th Sep 20257312 PMAQI
18th Sep 2025721 PMAQI
18th Sep 2025712 PMAQI
18th Sep 2025723 PMAQI
18th Sep 2025624 PMAQI
18th Sep 2025285 PMAQI
18th Sep 2025166 PMAQI
18th Sep 2025227 PMAQI
18th Sep 2025258 PMAQI
18th Sep 2025329 PMAQI
18th Sep 20253410 PMAQI
18th Sep 20253211 PMAQI
19th Sep 20253412 AMAQI
19th Sep 2025441 AMAQI
19th Sep 2025442 AMAQI
19th Sep 2025453 AMAQI
19th Sep 2025484 AMAQI

29°C24/34°C

19th Sep 2025535 AMAQI
19th Sep 2025536 AMAQI
19th Sep 2025537 AMAQI
19th Sep 2025538 AMAQI
19th Sep 2025269 AMAQI
19th Sep 20251810 AMAQI
19th Sep 20251811 AMAQI
19th Sep 20251912 PMAQI
19th Sep 2025211 PMAQI
19th Sep 2025192 PMAQI
19th Sep 2025243 PMAQI
19th Sep 2025254 PMAQI
19th Sep 2025195 PMAQI
19th Sep 2025216 PMAQI
19th Sep 2025247 PMAQI
19th Sep 2025288 PMAQI
19th Sep 2025349 PMAQI
19th Sep 20253510 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20253712 AMAQI
20th Sep 2025481 AMAQI
20th Sep 2025482 AMAQI
20th Sep 2025483 AMAQI
20th Sep 2025444 AMAQI

22°C22/23°C

20th Sep 2025425 AMAQI
20th Sep 2025426 AMAQI
20th Sep 2025427 AMAQI
20th Sep 2025428 AMAQI
20th Sep 2025259 AMAQI
20th Sep 20251810 AMAQI
20th Sep 20251811 AMAQI
20th Sep 20252612 PMAQI
20th Sep 2025291 PMAQI
20th Sep 2025282 PMAQI
20th Sep 2025313 PMAQI
20th Sep 2025294 PMAQI
20th Sep 2025295 PMAQI
20th Sep 2025386 PMAQI
20th Sep 2025397 PMAQI
20th Sep 2025418 PMAQI
20th Sep 2025439 PMAQI
20th Sep 20254110 PMAQI
20th Sep 20253311 PMAQI
21st Sep 20253812 AMAQI
21st Sep 2025451 AMAQI
21st Sep 2025442 AMAQI
21st Sep 2025443 AMAQI
21st Sep 2025424 AMAQI

25°C23/27°C

21st Sep 2025405 AMAQI
21st Sep 2025406 AMAQI
21st Sep 2025407 AMAQI
21st Sep 2025408 AMAQI
21st Sep 2025229 AMAQI
21st Sep 20251510 AMAQI
21st Sep 20251711 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025121 PMAQI
21st Sep 2025142 PMAQI
21st Sep 2025133 PMAQI
21st Sep 2025134 PMAQI
21st Sep 2025145 PMAQI
21st Sep 2025226 PMAQI
21st Sep 2025167 PMAQI
21st Sep 2025288 PMAQI
21st Sep 2025309 PMAQI
21st Sep 20253010 PMAQI
21st Sep 20252911 PMAQI
22nd Sep 20252812 AMAQI
22nd Sep 2025381 AMAQI
22nd Sep 2025422 AMAQI
22nd Sep 2025423 AMAQI
22nd Sep 2025404 AMAQI

26°C22/31°C

22nd Sep 2025365 AMAQI
22nd Sep 2025366 AMAQI
22nd Sep 2025367 AMAQI
22nd Sep 2025368 AMAQI
22nd Sep 2025229 AMAQI
22nd Sep 20251710 AMAQI
22nd Sep 20251811 AMAQI
22nd Sep 20251812 PMAQI
22nd Sep 2025191 PMAQI
22nd Sep 2025202 PMAQI
22nd Sep 2025233 PMAQI
22nd Sep 2025194 PMAQI
22nd Sep 2025205 PMAQI
22nd Sep 2025196 PMAQI
22nd Sep 2025187 PMAQI
22nd Sep 2025248 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20253012 AMAQI
23rd Sep 2025381 AMAQI
23rd Sep 2025382 AMAQI
23rd Sep 2025383 AMAQI
23rd Sep 2025364 AMAQI

24°C22/26°C

23rd Sep 2025345 AMAQI
23rd Sep 2025346 AMAQI
23rd Sep 2025337 AMAQI
23rd Sep 2025348 AMAQI
23rd Sep 2025249 AMAQI
23rd Sep 20252410 AMAQI
23rd Sep 20252011 AMAQI
23rd Sep 20252212 PMAQI
23rd Sep 2025211 PMAQI
23rd Sep 2025182 PMAQI
23rd Sep 2025203 PMAQI
23rd Sep 2025144 PMAQI
23rd Sep 2025185 PMAQI
23rd Sep 2025186 PMAQI
23rd Sep 2025217 PMAQI
23rd Sep 2025278 PMAQI
23rd Sep 2025259 PMAQI
23rd Sep 20252410 PMAQI
23rd Sep 20252611 PMAQI
24th Sep 20252712 AMAQI
24th Sep 2025341 AMAQI
24th Sep 2025362 AMAQI
24th Sep 2025363 AMAQI
24th Sep 2025344 AMAQI

23°C20/26°C

24th Sep 2025315 AMAQI
24th Sep 2025326 AMAQI
24th Sep 2025327 AMAQI
24th Sep 2025328 AMAQI
24th Sep 2025259 AMAQI
24th Sep 20252610 AMAQI
24th Sep 20252711 AMAQI
24th Sep 20253412 PMAQI
24th Sep 2025261 PMAQI
24th Sep 2025242 PMAQI
24th Sep 2025233 PMAQI
24th Sep 2025244 PMAQI
24th Sep 2025245 PMAQI
24th Sep 2025226 PMAQI
24th Sep 2025257 PMAQI
24th Sep 2025308 PMAQI
24th Sep 2025329 PMAQI
24th Sep 20252610 PMAQI
24th Sep 20252611 PMAQI
25th Sep 20252512 AMAQI
25th Sep 2025321 AMAQI
25th Sep 2025322 AMAQI
25th Sep 2025323 AMAQI
25th Sep 2025324 AMAQI

23°C20/27°C

25th Sep 2025315 AMAQI
25th Sep 2025326 AMAQI
25th Sep 2025317 AMAQI
25th Sep 2025318 AMAQI
25th Sep 2025309 AMAQI
25th Sep 20253010 AMAQI
25th Sep 20254211 AMAQI
25th Sep 20254912 PMAQI
25th Sep 2025331 PMAQI
25th Sep 2025342 PMAQI
25th Sep 2025373 PMAQI
25th Sep 2025374 PMAQI
25th Sep 2025355 PMAQI
25th Sep 2025356 PMAQI
25th Sep 2025317 PMAQI
25th Sep 2025288 PMAQI
25th Sep 2025299 PMAQI
25th Sep 20253010 PMAQI
25th Sep 20252511 PMAQI
26th Sep 20252812 AMAQI
26th Sep 2025281 AMAQI
26th Sep 2025242 AMAQI
26th Sep 2025263 AMAQI
26th Sep 2025304 AMAQI

24°C22/27°C

26th Sep 2025405 AMAQI
26th Sep 2025396 AMAQI
26th Sep 2025417 AMAQI
26th Sep 2025458 AMAQI
26th Sep 2025459 AMAQI
26th Sep 20254510 AMAQI
26th Sep 20255511 AMAQI
26th Sep 20257412 PMAQI
26th Sep 2025561 PMAQI
26th Sep 2025702 PMAQI
26th Sep 2025723 PMAQI
26th Sep 2025884 PMAQI
26th Sep 2025935 PMAQI
26th Sep 2025676 PMAQI
26th Sep 2025487 PMAQI
26th Sep 2025478 PMAQI
26th Sep 2025529 PMAQI
26th Sep 20255410 PMAQI
26th Sep 20254911 PMAQI
27th Sep 20254512 AMAQI
27th Sep 2025421 AMAQI
27th Sep 2025282 AMAQI
27th Sep 2025233 AMAQI
27th Sep 2025224 AMAQI

27°C24/32°C

27th Sep 2025245 AMAQI
27th Sep 2025256 AMAQI
27th Sep 2025277 AMAQI
27th Sep 2025318 AMAQI
27th Sep 2025319 AMAQI
27th Sep 20252910 AMAQI
27th Sep 20253311 AMAQI
27th Sep 20253712 PMAQI
27th Sep 2025381 PMAQI
27th Sep 2025272 PMAQI
27th Sep 2025223 PMAQI
27th Sep 2025264 PMAQI
27th Sep 2025285 PMAQI
27th Sep 2025246 PMAQI
27th Sep 2025287 PMAQI
27th Sep 2025268 PMAQI
27th Sep 2025199 PMAQI
27th Sep 20252210 PMAQI
27th Sep 20252311 PMAQI
28th Sep 20252612 AMAQI
28th Sep 2025241 AMAQI
28th Sep 2025222 AMAQI
28th Sep 2025273 AMAQI
28th Sep 2025304 AMAQI

25°C23/28°C

28th Sep 2025255 AMAQI
28th Sep 2025376 AMAQI
28th Sep 2025357 AMAQI
28th Sep 2025378 AMAQI
28th Sep 2025379 AMAQI
28th Sep 20253910 AMAQI
28th Sep 20254011 AMAQI
28th Sep 20254212 PMAQI
28th Sep 2025391 PMAQI
28th Sep 2025332 PMAQI
28th Sep 2025313 PMAQI
28th Sep 2025354 PMAQI
28th Sep 2025325 PMAQI
28th Sep 2025286 PMAQI
28th Sep 2025257 PMAQI
28th Sep 2025268 PMAQI
28th Sep 2025319 PMAQI
28th Sep 20252610 PMAQI
28th Sep 20252111 PMAQI
29th Sep 20252012 AMAQI
29th Sep 2025221 AMAQI
29th Sep 2025212 AMAQI
29th Sep 2025193 AMAQI
29th Sep 2025224 AMAQI

25°C23/28°C

29th Sep 2025225 AMAQI
29th Sep 2025286 AMAQI
29th Sep 2025367 AMAQI
29th Sep 2025348 AMAQI
29th Sep 2025399 AMAQI
29th Sep 20253910 AMAQI
29th Sep 20254211 AMAQI
29th Sep 20253712 PMAQI
29th Sep 2025341 PMAQI
29th Sep 2025422 PMAQI
29th Sep 2025333 PMAQI
29th Sep 2025414 PMAQI
29th Sep 2025375 PMAQI
29th Sep 2025326 PMAQI
29th Sep 2025317 PMAQI
29th Sep 2025408 PMAQI
29th Sep 2025389 PMAQI
29th Sep 20252110 PMAQI
29th Sep 20251611 PMAQI
30th Sep 20251712 AMAQI
30th Sep 2025171 AMAQI
30th Sep 2025172 AMAQI
30th Sep 2025143 AMAQI
30th Sep 2025144 AMAQI

27°C23/31°C

30th Sep 2025155 AMAQI
30th Sep 2025176 AMAQI
30th Sep 2025157 AMAQI
30th Sep 2025138 AMAQI
30th Sep 2025159 AMAQI
30th Sep 20251610 AMAQI
30th Sep 20253011 AMAQI
30th Sep 20253412 PMAQI
30th Sep 2025221 PMAQI
30th Sep 2025322 PMAQI
30th Sep 2025353 PMAQI
30th Sep 2025324 PMAQI
30th Sep 2025355 PMAQI
30th Sep 2025326 PMAQI
30th Sep 2025297 PMAQI
30th Sep 2025288 PMAQI
30th Sep 2025339 PMAQI
30th Sep 20253210 PMAQI
30th Sep 20253311 PMAQI
1st Oct 20252512 AMAQI
1st Oct 2025241 AMAQI
1st Oct 2025312 AMAQI
1st Oct 2025303 AMAQI
1st Oct 2025294 AMAQI

24°C22/27°C

1st Oct 2025315 AMAQI
1st Oct 2025216 AMAQI
1st Oct 2025177 AMAQI
1st Oct 2025178 AMAQI
1st Oct 2025189 AMAQI
1st Oct 20251610 AMAQI
1st Oct 20251611 AMAQI
1st Oct 20252912 PMAQI
1st Oct 2025381 PMAQI
1st Oct 2025332 PMAQI
1st Oct 2025333 PMAQI
1st Oct 2025334 PMAQI
1st Oct 2025335 PMAQI
1st Oct 2025356 PMAQI
1st Oct 2025367 PMAQI
1st Oct 2025288 PMAQI
1st Oct 2025279 PMAQI
1st Oct 20253010 PMAQI
1st Oct 20252211 PMAQI
2nd Oct 20253312 AMAQI
2nd Oct 2025441 AMAQI
2nd Oct 2025522 AMAQI
2nd Oct 2025533 AMAQI
2nd Oct 2025554 AMAQI

21°C20/21°C

2nd Oct 2025555 AMAQI
2nd Oct 2025556 AMAQI
2nd Oct 2025567 AMAQI
2nd Oct 2025548 AMAQI
2nd Oct 2025569 AMAQI
2nd Oct 20255610 AMAQI
2nd Oct 20255511 AMAQI
2nd Oct 20256012 PMAQI
2nd Oct 2025561 PMAQI
2nd Oct 2025562 PMAQI
2nd Oct 2025573 PMAQI
2nd Oct 2025494 PMAQI
2nd Oct 2025425 PMAQI
2nd Oct 2025446 PMAQI
2nd Oct 2025427 PMAQI
2nd Oct 2025418 PMAQI
2nd Oct 2025439 PMAQI
2nd Oct 20255010 PMAQI
2nd Oct 20254911 PMAQI
3rd Oct 20254412 AMAQI
3rd Oct 2025491 AMAQI
3rd Oct 2025352 AMAQI
3rd Oct 2025413 AMAQI
3rd Oct 2025374 AMAQI

23°C20/27°C

3rd Oct 2025375 AMAQI
3rd Oct 2025396 AMAQI
3rd Oct 2025397 AMAQI
3rd Oct 2025328 AMAQI
3rd Oct 2025309 AMAQI
3rd Oct 20253210 AMAQI
3rd Oct 20253411 AMAQI
3rd Oct 20254212 PMAQI
3rd Oct 2025391 PMAQI
3rd Oct 2025452 PMAQI
3rd Oct 2025453 PMAQI
3rd Oct 2025464 PMAQI
3rd Oct 2025505 PMAQI
3rd Oct 2025466 PMAQI
3rd Oct 2025527 PMAQI
3rd Oct 2025438 PMAQI
3rd Oct 2025509 PMAQI
3rd Oct 20255010 PMAQI
3rd Oct 20255111 PMAQI
4th Oct 20255012 AMAQI
4th Oct 2025541 AMAQI
4th Oct 2025422 AMAQI
4th Oct 2025473 AMAQI
4th Oct 2025524 AMAQI

24°C22/26°C

4th Oct 2025525 AMAQI
4th Oct 2025546 AMAQI
4th Oct 2025557 AMAQI
4th Oct 2025618 AMAQI
4th Oct 2025599 AMAQI
4th Oct 20256010 AMAQI
4th Oct 20255811 AMAQI
4th Oct 20256012 PMAQI
4th Oct 2025581 PMAQI
4th Oct 2025502 PMAQI
4th Oct 2025513 PMAQI
4th Oct 2025414 PMAQI
4th Oct 2025205 PMAQI
4th Oct 2025476 PMAQI
4th Oct 2025537 PMAQI
4th Oct 2025528 PMAQI
4th Oct 2025549 PMAQI
4th Oct 20255910 PMAQI
4th Oct 20255611 PMAQI
5th Oct 20255512 AMAQI
5th Oct 2025541 AMAQI
5th Oct 2025472 AMAQI
5th Oct 2025393 AMAQI
5th Oct 2025404 AMAQI

23°C22/26°C

5th Oct 2025415 AMAQI
5th Oct 2025396 AMAQI
5th Oct 2025427 AMAQI
5th Oct 2025418 AMAQI
5th Oct 2025379 AMAQI
5th Oct 20253310 AMAQI
5th Oct 20253911 AMAQI
5th Oct 20254012 PMAQI
5th Oct 2025451 PMAQI
5th Oct 2025372 PMAQI
5th Oct 2025353 PMAQI
5th Oct 2025324 PMAQI
5th Oct 2025345 PMAQI
5th Oct 2025326 PMAQI
5th Oct 2025327 PMAQI
5th Oct 2025348 PMAQI
5th Oct 2025429 PMAQI
5th Oct 20253810 PMAQI
5th Oct 20254611 PMAQI
6th Oct 20254912 AMAQI
6th Oct 2025471 AMAQI
6th Oct 2025482 AMAQI
6th Oct 2025473 AMAQI
6th Oct 2025424 AMAQI

25°C21/28°C

6th Oct 2025395 AMAQI
6th Oct 2025426 AMAQI
6th Oct 2025437 AMAQI
6th Oct 2025498 AMAQI
6th Oct 2025529 AMAQI
6th Oct 20254310 AMAQI
6th Oct 20253911 AMAQI
6th Oct 20253912 PMAQI
6th Oct 2025411 PMAQI
6th Oct 2025522 PMAQI
6th Oct 2025383 PMAQI
6th Oct 2025324 PMAQI
6th Oct 2025395 PMAQI
6th Oct 2025416 PMAQI
6th Oct 2025397 PMAQI
6th Oct 2025388 PMAQI
6th Oct 2025399 PMAQI
6th Oct 20254510 PMAQI
6th Oct 20255411 PMAQI
7th Oct 20255612 AMAQI
7th Oct 2025571 AMAQI
7th Oct 2025552 AMAQI

24°C21/27°C

7th Oct 2025508 PMAQI
7th Oct 2025269 PMAQI
7th Oct 20253510 PMAQI
7th Oct 20254011 PMAQI
8th Oct 20253812 AMAQI
8th Oct 2025491 AMAQI
8th Oct 2025522 AMAQI
8th Oct 2025463 AMAQI
8th Oct 2025564 AMAQI

22°C21/23°C

8th Oct 2025565 AMAQI
8th Oct 2025546 AMAQI
8th Oct 2025367 AMAQI
8th Oct 2025538 AMAQI
8th Oct 2025579 AMAQI
8th Oct 20255710 AMAQI
8th Oct 20255711 AMAQI
8th Oct 20255612 PMAQI
8th Oct 2025601 PMAQI
8th Oct 2025572 PMAQI
8th Oct 2025583 PMAQI
8th Oct 2025624 PMAQI
8th Oct 2025595 PMAQI
8th Oct 2025586 PMAQI
8th Oct 2025617 PMAQI
8th Oct 2025618 PMAQI
8th Oct 2025629 PMAQI
8th Oct 20256110 PMAQI
8th Oct 20255911 PMAQI
9th Oct 20255512 AMAQI
9th Oct 2025561 AMAQI
9th Oct 2025592 AMAQI
9th Oct 2025623 AMAQI
9th Oct 2025634 AMAQI

24°C21/28°C

9th Oct 2025545 AMAQI
9th Oct 2025456 AMAQI
9th Oct 2025487 AMAQI
9th Oct 2025488 AMAQI
9th Oct 2025459 AMAQI
9th Oct 20254110 AMAQI
9th Oct 20253911 AMAQI
9th Oct 20253912 PMAQI
9th Oct 2025491 PMAQI
9th Oct 2025512 PMAQI
9th Oct 2025553 PMAQI
9th Oct 2025584 PMAQI
9th Oct 2025565 PMAQI
9th Oct 2025536 PMAQI
9th Oct 2025537 PMAQI
9th Oct 2025528 PMAQI
9th Oct 2025479 PMAQI
9th Oct 20254410 PMAQI
9th Oct 20254211 PMAQI
10th Oct 20253812 AMAQI
10th Oct 2025291 AMAQI
10th Oct 2025342 AMAQI
10th Oct 2025403 AMAQI
10th Oct 2025404 AMAQI

21°C19/22°C

10th Oct 2025465 AMAQI
10th Oct 2025356 AMAQI
10th Oct 2025407 AMAQI
10th Oct 2025568 AMAQI
10th Oct 2025549 AMAQI
10th Oct 20255310 AMAQI
10th Oct 20255211 AMAQI
10th Oct 20254812 PMAQI
10th Oct 2025451 PMAQI
10th Oct 2025492 PMAQI
10th Oct 2025543 PMAQI
10th Oct 2025534 PMAQI
10th Oct 2025555 PMAQI
10th Oct 2025526 PMAQI
10th Oct 2025567 PMAQI
10th Oct 2025578 PMAQI
10th Oct 2025599 PMAQI
10th Oct 20255910 PMAQI
10th Oct 20255511 PMAQI
11th Oct 20255612 AMAQI
11th Oct 2025571 AMAQI
11th Oct 2025592 AMAQI
11th Oct 2025593 AMAQI
11th Oct 2025584 AMAQI

21°C18/24°C

11th Oct 2025565 AMAQI
11th Oct 2025626 AMAQI
11th Oct 2025607 AMAQI
11th Oct 2025618 AMAQI
11th Oct 2025569 AMAQI
11th Oct 20253410 AMAQI
11th Oct 20253911 AMAQI
11th Oct 20254012 PMAQI
11th Oct 2025461 PMAQI
11th Oct 2025452 PMAQI
11th Oct 2025483 PMAQI
11th Oct 2025544 PMAQI
11th Oct 2025535 PMAQI
11th Oct 2025326 PMAQI
11th Oct 2025277 PMAQI
11th Oct 2025288 PMAQI
11th Oct 2025279 PMAQI
11th Oct 20252610 PMAQI
11th Oct 20252711 PMAQI
12th Oct 20252612 AMAQI
12th Oct 2025451 AMAQI
12th Oct 2025432 AMAQI
12th Oct 2025393 AMAQI
12th Oct 2025404 AMAQI

19°C18/21°C

12th Oct 2025325 AMAQI
5 AM
12th Oct 2025266 AMAQI
12th Oct 2025247 AMAQI
12th Oct 2025258 AMAQI
12th Oct 2025269 AMAQI
12th Oct 20252610 AMAQI
12th Oct 20252411 AMAQI
11 AM
12th Oct 20254612 PMAQI
12th Oct 2025521 PMAQI
5 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
12 PM - 4 PM

40AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
9 AM - 10 AM

37AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 4 PM (Avg. 40), while the lowest AQI was between 9 AM to 10 AM (Avg. 37).
Night time
Avg. Highest Time
1 AM - 4 AM

39AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
6 PM - 11 PM

36AQI

6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 39), while the lowest AQI was between 6 PM to 11 PM (Avg. 36).

2025 Days Vs Air Quality

Yawata, Ichikawa, Chiba, Japan

2025

87%

246

13%

38

Total number of days with different AQI categories in last 285 days in 2025 (80 days remaining)

Good
246 Days
Moderate
38 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 87%

Health Risk Level:

Low

In 2025, 87% of 285 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

Yawata, Ichikawa, Chiba, 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
32AQI
2nd January 2025
31AQI
3rd January 2025
25AQI
4th January 2025
30AQI
5th January 2025
37AQI
6th January 2025
50AQI
7th January 2025
33AQI
8th January 2025
34AQI
9th January 2025
29AQI
10th January 2025
28AQI
11th January 2025
32AQI
12th January 2025
40AQI
13th January 2025
30AQI
14th January 2025
44AQI
15th January 2025
37AQI
16th January 2025
35AQI
17th January 2025
32AQI
18th January 2025
35AQI
19th January 2025
50AQI
20th January 2025
41AQI
21st January 2025
41AQI
22nd January 2025
42AQI
23rd January 2025
52AQI
24th January 2025
47AQI
25th January 2025
43AQI
26th January 2025
36AQI
27th January 2025
42AQI
28th January 2025
40AQI
29th January 2025
33AQI
30th January 2025
35AQI
31st January 2025
30AQI
1st February 2025
41AQI
2nd February 2025
32AQI
3rd February 2025
39AQI
4th February 2025
31AQI
5th February 2025
32AQI
6th February 2025
27AQI
7th February 2025
29AQI
8th February 2025
28AQI
9th February 2025
29AQI
10th February 2025
28AQI
11th February 2025
30AQI
12th February 2025
33AQI
13th February 2025
32AQI
14th February 2025
29AQI
15th February 2025
30AQI
16th February 2025
36AQI
17th February 2025
36AQI
18th February 2025
31AQI
19th February 2025
30AQI
20th February 2025
30AQI
21st February 2025
30AQI
22nd February 2025
31AQI
23rd February 2025
32AQI
24th February 2025
33AQI
25th February 2025
32AQI
26th February 2025
37AQI
27th February 2025
38AQI
28th February 2025
57AQI
1st March 2025
51AQI
2nd March 2025
63AQI
3rd March 2025
40AQI
4th March 2025
40AQI
5th March 2025
24AQI
6th March 2025
34AQI
7th March 2025
31AQI
8th March 2025
33AQI
9th March 2025
34AQI
10th March 2025
35AQI
11th March 2025
43AQI
12th March 2025
46AQI
13th March 2025
41AQI
14th March 2025
38AQI
15th March 2025
35AQI
16th March 2025
25AQI
17th March 2025
19AQI
18th March 2025
24AQI
19th March 2025
16AQI
20th March 2025
24AQI
21st March 2025
42AQI
22nd March 2025
50AQI
23rd March 2025
56AQI
24th March 2025
53AQI
25th March 2025
67AQI
26th March 2025
77AQI
27th March 2025
69AQI
28th March 2025
51AQI
29th March 2025
38AQI
30th March 2025
40AQI
31st March 2025
31AQI
1st April 2025
29AQI
2nd April 2025
21AQI
3rd April 2025
20AQI
4th April 2025
19AQI
5th April 2025
24AQI
6th April 2025
25AQI
7th April 2025
30AQI
8th April 2025
39AQI
9th April 2025
26AQI
10th April 2025
48AQI
11th April 2025
37AQI
12th April 2025
40AQI
13th April 2025
30AQI
14th April 2025
42AQI
15th April 2025
31AQI
16th April 2025
37AQI
17th April 2025
46AQI
18th April 2025
52AQI
19th April 2025
63AQI
20th April 2025
51AQI
21st April 2025
44AQI
22nd April 2025
45AQI
23rd April 2025
31AQI
24th April 2025
43AQI
25th April 2025
40AQI
26th April 2025
49AQI
27th April 2025
48AQI
28th April 2025
46AQI
29th April 2025
36AQI
30th April 2025
47AQI
1st May 2025
40AQI
2nd May 2025
29AQI
3rd May 2025
33AQI
4th May 2025
38AQI
5th May 2025
36AQI
6th May 2025
28AQI
7th May 2025
26AQI
8th May 2025
28AQI
9th May 2025
30AQI
10th May 2025
25AQI
11th May 2025
30AQI
12th May 2025
27AQI
13th May 2025
36AQI
14th May 2025
34AQI
15th May 2025
39AQI
16th May 2025
42AQI
17th May 2025
31AQI
18th May 2025
46AQI
19th May 2025
42AQI
20th May 2025
63AQI
21st May 2025
44AQI
22nd May 2025
43AQI
23rd May 2025
39AQI
24th May 2025
37AQI
25th May 2025
29AQI
26th May 2025
27AQI
27th May 2025
24AQI
28th May 2025
23AQI
29th May 2025
28AQI
30th May 2025
26AQI
31st May 2025
18AQI
1st June 2025
24AQI
2nd June 2025
30AQI
3rd June 2025
35AQI
4th June 2025
36AQI
5th June 2025
41AQI
6th June 2025
47AQI
7th June 2025
49AQI
8th June 2025
56AQI
9th June 2025
42AQI
10th June 2025
35AQI
11th June 2025
31AQI
12th June 2025
42AQI
13th June 2025
43AQI
14th June 2025
36AQI
15th June 2025
39AQI
16th June 2025
41AQI
17th June 2025
51AQI
18th June 2025
45AQI
19th June 2025
44AQI
20th June 2025
41AQI
21st June 2025
32AQI
22nd June 2025
25AQI
23rd June 2025
26AQI
24th June 2025
26AQI
25th June 2025
21AQI
26th June 2025
22AQI
27th June 2025
33AQI
28th June 2025
31AQI
29th June 2025
37AQI
30th June 2025
39AQI
1st July 2025
39AQI
2nd July 2025
43AQI
3rd July 2025
40AQI
4th July 2025
45AQI
5th July 2025
53AQI
6th July 2025
69AQI
7th July 2025
80AQI
8th July 2025
78AQI
9th July 2025
71AQI
10th July 2025
54AQI
11th July 2025
45AQI
12th July 2025
48AQI
13th July 2025
46AQI
14th July 2025
39AQI
15th July 2025
37AQI
16th July 2025
37AQI
17th July 2025
39AQI
18th July 2025
33AQI
19th July 2025
31AQI
20th July 2025
30AQI
21st July 2025
32AQI
22nd July 2025
33AQI
23rd July 2025
35AQI
24th July 2025
36AQI
25th July 2025
31AQI
26th July 2025
30AQI
27th July 2025
28AQI
28th July 2025
34AQI
29th July 2025
30AQI
30th July 2025
28AQI
31st July 2025
29AQI
1st August 2025
31AQI
2nd August 2025
42AQI
3rd August 2025
45AQI
4th August 2025
62AQI
5th August 2025
53AQI
6th August 2025
52AQI
7th August 2025
50AQI
8th August 2025
45AQI
9th August 2025
49AQI
10th August 2025
37AQI
11th August 2025
39AQI
12th August 2025
37AQI
13th August 2025
36AQI
14th August 2025
39AQI
15th August 2025
36AQI
16th August 2025
39AQI
17th August 2025
42AQI
18th August 2025
47AQI
19th August 2025
46AQI
20th August 2025
48AQI
21st August 2025
52AQI
22nd August 2025
53AQI
23rd August 2025
49AQI
24th August 2025
57AQI
25th August 2025
57AQI
26th August 2025
54AQI
27th August 2025
52AQI
28th August 2025
45AQI
29th August 2025
52AQI
30th August 2025
56AQI
31st August 2025
54AQI
1st September 2025
46AQI
2nd September 2025
40AQI
3rd September 2025
41AQI
4th September 2025
37AQI
5th September 2025
31AQI
6th September 2025
34AQI
7th September 2025
32AQI
8th September 2025
44AQI
9th September 2025
48AQI
10th September 2025
46AQI
11th September 2025
40AQI
12th September 2025
33AQI
13th September 2025
31AQI
14th September 2025
38AQI
15th September 2025
35AQI
16th September 2025
37AQI
17th September 2025
50AQI
18th September 2025
44AQI
19th September 2025
34AQI
20th September 2025
37AQI
21st September 2025
29AQI
22nd September 2025
28AQI
23rd September 2025
27AQI
24th September 2025
29AQI
25th September 2025
32AQI
26th September 2025
50AQI
27th September 2025
28AQI
28th September 2025
30AQI
29th September 2025
30AQI
30th September 2025
24AQI
1st October 2025
28AQI
2nd October 2025
50AQI
3rd October 2025
43AQI
4th October 2025
52AQI
5th October 2025
40AQI
6th October 2025
43AQI
7th October 2025
42AQI
8th October 2025
55AQI
9th October 2025
51AQI
10th October 2025
48AQI
11th October 2025
52AQI
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

37AQI

33AQI

41AQI

38AQI

34AQI

37AQI

42AQI

47AQI

36AQI

46AQI

No. of days

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

202539AQI

30
1
27
1
23
8
27
3
30
1
28
2
25
6
19
12
30
7
4
246
38

Highest AQI recorded in

August

47AQI

Lowest AQI recorded in

February

33AQI

202437AQI

26
5
27
2
26
5
22
8
27
4
28
2
19
12
30
1
28
2
30
1
26
4
30
1
319
47

Highest AQI recorded in

July

48AQI

Lowest AQI recorded in

September

29AQI

202340AQI

24
7
22
6
26
5
22
8
26
5
18
12
21
10
29
2
30
27
4
21
8
22
9
288
76

Highest AQI recorded in

April

45AQI

Lowest AQI recorded in

August

28AQI

202238AQI

27
4
17
4
24
7
21
9
25
6
24
6
20
4
1
29
26
5
23
7
29
2
266
54

Highest AQI recorded in

April

43AQI

Lowest AQI recorded in

August

19AQI

202135AQI

22
8
22
6
26
5
27
3
27
4
27
3
29
2
28
3
30
27
2
23
7
20
11
308
54

Highest AQI recorded in

December

44AQI

Lowest AQI recorded in

August

29AQI

202033AQI

11
2
20
1
18
25
5
31
23
8
19
29
2
21
9
20
11
217
38

Highest AQI recorded in

December

40AQI

Lowest AQI recorded in

September

23AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
40AQI
Least Polluted Year Recorded
2020(Avg.)
33AQI

Yawata's annual 2025 AQI (39) shows an average percentage change of 6.1% (worsened AQI) compared to previous years: 2020 (33), 2021 (35), 2022 (38), 2023 (40), 2024 (37).