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HistoryAQIPM2.5PM10COSO2NO2O3

Yahagicho, Okazaki, Aichi, 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

Yahagicho, Okazaki, Aichi, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
8th Oct 2025
64AQI
Lowest AQI recorded on
18th Oct 2021
20AQI

Same Day Analysis (12th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 55 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 12th Oct - 13th Oct 2025

Yahagicho, Okazaki, Aichi, Japan

AQI
Day
Night
.

5 AM12th Oct 2025

5 PM

4 AM13th Oct 2025

Day time
Avg. Highest Time
4PM12th Oct

54AQI

Avg. Lowest Time
12PM12th Oct

38AQI

Night time
Avg. Highest Time
12AM13th Oct

65AQI

Avg. Lowest Time
7PM12th Oct

48AQI

In the last 24 hours,

Yahagicho's AQI reached its highest point of 65 at 12 AM during the Night, while the lowest point, 38, was recorded at 12 PM during the Day between 12th Oct and 13th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Yahagicho, Okazaki, Aichi, Japan

SepOct
13th - 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 - 13th13th
Day
Night
13th Sep 2025345 AMAQI
13th Sep 2025336 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025338 AMAQI
13th Sep 2025189 AMAQI
13th Sep 20251610 AMAQI
13th Sep 20252611 AMAQI
13th Sep 20253112 PMAQI
13th Sep 2025251 PMAQI
13th Sep 2025242 PMAQI
13th Sep 2025243 PMAQI
13th Sep 2025264 PMAQI
13th Sep 2025255 PMAQI
13th Sep 2025226 PMAQI
13th Sep 2025247 PMAQI
13th Sep 2025288 PMAQI
13th Sep 2025269 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20252811 PMAQI
14th Sep 20252812 AMAQI
14th Sep 2025311 AMAQI
14th Sep 2025322 AMAQI
14th Sep 2025333 AMAQI
14th Sep 2025314 AMAQI

26°C24/29°C

14th Sep 2025325 AMAQI
14th Sep 2025326 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025239 AMAQI
14th Sep 20252310 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20253412 PMAQI
14th Sep 2025361 PMAQI
14th Sep 2025352 PMAQI
14th Sep 2025433 PMAQI
14th Sep 2025364 PMAQI
14th Sep 2025445 PMAQI
14th Sep 2025536 PMAQI
14th Sep 2025537 PMAQI
14th Sep 2025488 PMAQI
14th Sep 2025409 PMAQI
14th Sep 20253910 PMAQI
14th Sep 20254011 PMAQI
15th Sep 20254012 AMAQI
15th Sep 2025351 AMAQI
15th Sep 2025322 AMAQI
15th Sep 2025323 AMAQI
15th Sep 2025324 AMAQI

27°C25/30°C

15th Sep 2025325 AMAQI
15th Sep 2025326 AMAQI
15th Sep 2025327 AMAQI
15th Sep 2025328 AMAQI
15th Sep 2025399 AMAQI
15th Sep 20254010 AMAQI
15th Sep 20254111 AMAQI
15th Sep 20254412 PMAQI
15th Sep 2025381 PMAQI
15th Sep 2025362 PMAQI
15th Sep 2025433 PMAQI
15th Sep 2025304 PMAQI
15th Sep 2025295 PMAQI
15th Sep 2025316 PMAQI
15th Sep 2025317 PMAQI
15th Sep 2025328 PMAQI
15th Sep 2025379 PMAQI
15th Sep 20253610 PMAQI
15th Sep 20253311 PMAQI
16th Sep 20253312 AMAQI
16th Sep 2025401 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025343 AMAQI
16th Sep 2025354 AMAQI

29°C25/33°C

16th Sep 2025365 AMAQI
16th Sep 2025366 AMAQI
16th Sep 2025367 AMAQI
16th Sep 2025368 AMAQI
16th Sep 2025469 AMAQI
16th Sep 20254910 AMAQI
16th Sep 20254711 AMAQI
16th Sep 20254612 PMAQI
16th Sep 2025511 PMAQI
16th Sep 2025552 PMAQI
16th Sep 2025563 PMAQI
16th Sep 2025604 PMAQI
16th Sep 2025595 PMAQI
16th Sep 2025606 PMAQI
16th Sep 2025567 PMAQI
16th Sep 2025498 PMAQI
16th Sep 2025469 PMAQI
16th Sep 20254610 PMAQI
16th Sep 20254911 PMAQI
17th Sep 20255012 AMAQI
17th Sep 2025401 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025353 AMAQI
17th Sep 2025384 AMAQI

28°C25/33°C

17th Sep 2025395 AMAQI
17th Sep 2025406 AMAQI
17th Sep 2025407 AMAQI
17th Sep 2025398 AMAQI
17th Sep 2025529 AMAQI
17th Sep 20255610 AMAQI
17th Sep 20256011 AMAQI
17th Sep 20256212 PMAQI
17th Sep 2025631 PMAQI
17th Sep 2025652 PMAQI
17th Sep 2025623 PMAQI
17th Sep 2025584 PMAQI
17th Sep 2025605 PMAQI
17th Sep 2025626 PMAQI
17th Sep 2025607 PMAQI
17th Sep 2025568 PMAQI
17th Sep 2025549 PMAQI
17th Sep 20255410 PMAQI
17th Sep 20255511 PMAQI
18th Sep 20255612 AMAQI
18th Sep 2025521 AMAQI
18th Sep 2025392 AMAQI
18th Sep 2025403 AMAQI
18th Sep 2025424 AMAQI

29°C26/33°C

18th Sep 2025465 AMAQI
18th Sep 2025476 AMAQI
18th Sep 2025477 AMAQI
18th Sep 2025488 AMAQI
18th Sep 2025629 AMAQI
18th Sep 20256710 AMAQI
18th Sep 20256511 AMAQI
18th Sep 20256212 PMAQI
18th Sep 2025571 PMAQI
18th Sep 2025522 PMAQI
18th Sep 2025443 PMAQI
18th Sep 2025394 PMAQI
18th Sep 2025255 PMAQI
18th Sep 2025226 PMAQI
18th Sep 2025227 PMAQI
18th Sep 2025238 PMAQI
18th Sep 2025339 PMAQI
18th Sep 20253410 PMAQI
18th Sep 20253411 PMAQI
19th Sep 20253312 AMAQI
19th Sep 2025391 AMAQI
19th Sep 2025482 AMAQI
19th Sep 2025483 AMAQI
19th Sep 2025504 AMAQI

28°C25/32°C

19th Sep 2025525 AMAQI
19th Sep 2025526 AMAQI
19th Sep 2025527 AMAQI
19th Sep 2025528 AMAQI
19th Sep 2025289 AMAQI
19th Sep 20252110 AMAQI
19th Sep 20252011 AMAQI
19th Sep 20252512 PMAQI
19th Sep 2025241 PMAQI
19th Sep 2025252 PMAQI
19th Sep 2025253 PMAQI
19th Sep 2025264 PMAQI
19th Sep 2025255 PMAQI
19th Sep 2025256 PMAQI
19th Sep 2025287 PMAQI
19th Sep 2025328 PMAQI
19th Sep 2025389 PMAQI
19th Sep 20254010 PMAQI
19th Sep 20253911 PMAQI
20th Sep 20253712 AMAQI
20th Sep 2025411 AMAQI
20th Sep 2025482 AMAQI
20th Sep 2025483 AMAQI
20th Sep 2025464 AMAQI

24°C23/26°C

20th Sep 2025425 AMAQI
20th Sep 2025426 AMAQI
20th Sep 2025427 AMAQI
20th Sep 2025428 AMAQI
20th Sep 2025309 AMAQI
20th Sep 20252610 AMAQI
20th Sep 20252611 AMAQI
20th Sep 20252512 PMAQI
20th Sep 2025241 PMAQI
20th Sep 2025262 PMAQI
20th Sep 2025283 PMAQI
20th Sep 2025304 PMAQI
20th Sep 2025365 PMAQI
20th Sep 2025396 PMAQI
20th Sep 2025407 PMAQI
20th Sep 2025408 PMAQI
20th Sep 2025469 PMAQI
20th Sep 20254610 PMAQI
20th Sep 20254611 PMAQI
21st Sep 20254612 AMAQI
21st Sep 2025441 AMAQI
21st Sep 2025432 AMAQI
21st Sep 2025443 AMAQI
21st Sep 2025424 AMAQI

23°C22/24°C

21st Sep 2025405 AMAQI
21st Sep 2025396 AMAQI
21st Sep 2025407 AMAQI
21st Sep 2025408 AMAQI
21st Sep 2025229 AMAQI
21st Sep 20251410 AMAQI
21st Sep 20251611 AMAQI
21st Sep 20251712 PMAQI
21st Sep 2025161 PMAQI
21st Sep 2025142 PMAQI
21st Sep 2025163 PMAQI
21st Sep 2025164 PMAQI
21st Sep 2025145 PMAQI
21st Sep 2025166 PMAQI
21st Sep 2025177 PMAQI
21st Sep 2025238 PMAQI
21st Sep 2025319 PMAQI
21st Sep 20253110 PMAQI
21st Sep 20253011 PMAQI
22nd Sep 20253112 AMAQI
22nd Sep 2025381 AMAQI
22nd Sep 2025432 AMAQI
22nd Sep 2025423 AMAQI
22nd Sep 2025404 AMAQI

25°C22/30°C

22nd Sep 2025375 AMAQI
22nd Sep 2025376 AMAQI
22nd Sep 2025367 AMAQI
22nd Sep 2025378 AMAQI
22nd Sep 2025229 AMAQI
22nd Sep 20252010 AMAQI
22nd Sep 20252211 AMAQI
22nd Sep 20252512 PMAQI
22nd Sep 2025301 PMAQI
22nd Sep 2025282 PMAQI
22nd Sep 2025273 PMAQI
22nd Sep 2025294 PMAQI
22nd Sep 2025345 PMAQI
22nd Sep 2025296 PMAQI
22nd Sep 2025267 PMAQI
22nd Sep 2025318 PMAQI
22nd Sep 2025359 PMAQI
22nd Sep 20253510 PMAQI
22nd Sep 20253411 PMAQI
23rd Sep 20253312 AMAQI
23rd Sep 2025381 AMAQI
23rd Sep 2025402 AMAQI
23rd Sep 2025383 AMAQI
23rd Sep 2025374 AMAQI

23°C20/26°C

23rd Sep 2025355 AMAQI
23rd Sep 2025356 AMAQI
23rd Sep 2025357 AMAQI
23rd Sep 2025368 AMAQI
23rd Sep 2025319 AMAQI
23rd Sep 20253410 AMAQI
23rd Sep 20253611 AMAQI
23rd Sep 20253912 PMAQI
23rd Sep 2025411 PMAQI
23rd Sep 2025382 PMAQI
23rd Sep 2025403 PMAQI
23rd Sep 2025374 PMAQI
23rd Sep 2025405 PMAQI
23rd Sep 2025336 PMAQI
23rd Sep 2025287 PMAQI
23rd Sep 2025288 PMAQI
23rd Sep 2025339 PMAQI
23rd Sep 20253410 PMAQI
23rd Sep 20253211 PMAQI
24th Sep 20253112 AMAQI
24th Sep 2025331 AMAQI
24th Sep 2025362 AMAQI
24th Sep 2025383 AMAQI
24th Sep 2025374 AMAQI

23°C20/26°C

24th Sep 2025385 AMAQI
24th Sep 2025376 AMAQI
24th Sep 2025377 AMAQI
24th Sep 2025368 AMAQI
24th Sep 2025349 AMAQI
24th Sep 20253210 AMAQI
24th Sep 20253211 AMAQI
24th Sep 20253612 PMAQI
24th Sep 2025321 PMAQI
24th Sep 2025352 PMAQI
24th Sep 2025333 PMAQI
24th Sep 2025284 PMAQI
24th Sep 2025275 PMAQI
24th Sep 2025246 PMAQI
24th Sep 2025257 PMAQI
24th Sep 2025248 PMAQI
24th Sep 2025309 PMAQI
24th Sep 20253210 PMAQI
24th Sep 20253311 PMAQI
25th Sep 20253212 AMAQI
25th Sep 2025341 AMAQI
25th Sep 2025362 AMAQI
25th Sep 2025363 AMAQI
25th Sep 2025364 AMAQI

23°C20/27°C

25th Sep 2025365 AMAQI
25th Sep 2025376 AMAQI
25th Sep 2025367 AMAQI
25th Sep 2025368 AMAQI
25th Sep 2025329 AMAQI
25th Sep 20253010 AMAQI
25th Sep 20252611 AMAQI
25th Sep 20252812 PMAQI
25th Sep 2025341 PMAQI
25th Sep 2025402 PMAQI
25th Sep 2025483 PMAQI
25th Sep 2025564 PMAQI
25th Sep 2025605 PMAQI
25th Sep 2025606 PMAQI
25th Sep 2025527 PMAQI
25th Sep 2025448 PMAQI
25th Sep 2025449 PMAQI
25th Sep 20254710 PMAQI
25th Sep 20255111 PMAQI
26th Sep 20255112 AMAQI
26th Sep 2025481 AMAQI
26th Sep 2025462 AMAQI
26th Sep 2025443 AMAQI
26th Sep 2025334 AMAQI

25°C22/28°C

26th Sep 2025305 AMAQI
26th Sep 2025326 AMAQI
26th Sep 2025387 AMAQI
26th Sep 2025308 AMAQI
26th Sep 2025319 AMAQI
26th Sep 20252810 AMAQI
26th Sep 20253011 AMAQI
26th Sep 20253112 PMAQI
26th Sep 2025381 PMAQI
26th Sep 2025362 PMAQI
26th Sep 2025333 PMAQI
26th Sep 2025304 PMAQI
26th Sep 2025245 PMAQI
26th Sep 2025276 PMAQI
26th Sep 2025297 PMAQI
26th Sep 2025308 PMAQI
26th Sep 2025249 PMAQI
26th Sep 20252410 PMAQI
26th Sep 20252611 PMAQI
27th Sep 20252612 AMAQI
27th Sep 2025271 AMAQI
27th Sep 2025272 AMAQI
27th Sep 2025283 AMAQI
27th Sep 2025304 AMAQI

26°C22/32°C

27th Sep 2025315 AMAQI
27th Sep 2025336 AMAQI
27th Sep 2025297 AMAQI
27th Sep 2025298 AMAQI
27th Sep 2025319 AMAQI
27th Sep 20253810 AMAQI
27th Sep 20253011 AMAQI
27th Sep 20253012 PMAQI
27th Sep 2025311 PMAQI
27th Sep 2025382 PMAQI
27th Sep 2025343 PMAQI
27th Sep 2025354 PMAQI
27th Sep 2025475 PMAQI
27th Sep 2025426 PMAQI
27th Sep 2025457 PMAQI
27th Sep 2025448 PMAQI
27th Sep 2025409 PMAQI
27th Sep 20253910 PMAQI
27th Sep 20253911 PMAQI
28th Sep 20253512 AMAQI
28th Sep 2025331 AMAQI
28th Sep 2025302 AMAQI
28th Sep 2025333 AMAQI
28th Sep 2025334 AMAQI

25°C21/29°C

28th Sep 2025335 AMAQI
28th Sep 2025296 AMAQI
28th Sep 2025327 AMAQI
28th Sep 2025298 AMAQI
28th Sep 2025309 AMAQI
28th Sep 20252910 AMAQI
28th Sep 20253211 AMAQI
28th Sep 20253312 PMAQI
28th Sep 2025381 PMAQI
28th Sep 2025432 PMAQI
28th Sep 2025443 PMAQI
28th Sep 2025374 PMAQI
28th Sep 2025415 PMAQI
28th Sep 2025376 PMAQI
28th Sep 2025327 PMAQI
28th Sep 2025348 PMAQI
28th Sep 2025399 PMAQI
28th Sep 20253910 PMAQI
28th Sep 20253811 PMAQI
29th Sep 20253812 AMAQI
29th Sep 2025351 AMAQI
29th Sep 2025312 AMAQI
29th Sep 2025353 AMAQI
29th Sep 2025354 AMAQI

25°C22/28°C

29th Sep 2025285 AMAQI
29th Sep 2025236 AMAQI
29th Sep 2025307 AMAQI
29th Sep 2025288 AMAQI
29th Sep 2025309 AMAQI
29th Sep 20253310 AMAQI
29th Sep 20253211 AMAQI
29th Sep 20252612 PMAQI
29th Sep 2025151 PMAQI
29th Sep 2025112 PMAQI
29th Sep 2025203 PMAQI
29th Sep 2025224 PMAQI
29th Sep 2025205 PMAQI
29th Sep 2025266 PMAQI
29th Sep 2025237 PMAQI
29th Sep 2025228 PMAQI
29th Sep 2025259 PMAQI
29th Sep 20252810 PMAQI
29th Sep 20252811 PMAQI
30th Sep 20252212 AMAQI
30th Sep 2025181 AMAQI
30th Sep 2025252 AMAQI
30th Sep 2025323 AMAQI
30th Sep 2025214 AMAQI

24°C22/28°C

30th Sep 2025245 AMAQI
30th Sep 2025236 AMAQI
30th Sep 2025257 AMAQI
30th Sep 2025328 AMAQI
30th Sep 2025279 AMAQI
30th Sep 20251910 AMAQI
30th Sep 20251811 AMAQI
30th Sep 20251812 PMAQI
30th Sep 2025231 PMAQI
30th Sep 2025242 PMAQI
30th Sep 2025203 PMAQI
30th Sep 2025204 PMAQI
30th Sep 2025245 PMAQI
30th Sep 2025326 PMAQI
30th Sep 2025307 PMAQI
30th Sep 2025348 PMAQI
30th Sep 2025399 PMAQI
30th Sep 20253610 PMAQI
30th Sep 20253011 PMAQI
1st Oct 20253312 AMAQI
1st Oct 2025281 AMAQI
1st Oct 2025242 AMAQI
1st Oct 2025263 AMAQI
1st Oct 2025384 AMAQI

23°C20/26°C

1st Oct 2025415 AMAQI
1st Oct 2025286 AMAQI
1st Oct 2025337 AMAQI
1st Oct 2025338 AMAQI
1st Oct 2025229 AMAQI
1st Oct 20252210 AMAQI
1st Oct 20252611 AMAQI
1st Oct 20251912 PMAQI
1st Oct 2025221 PMAQI
1st Oct 2025502 PMAQI
1st Oct 2025553 PMAQI
1st Oct 2025564 PMAQI
1st Oct 2025565 PMAQI
1st Oct 2025396 PMAQI
1st Oct 2025377 PMAQI
1st Oct 2025448 PMAQI
1st Oct 2025569 PMAQI
1st Oct 20255410 PMAQI
1st Oct 20255811 PMAQI
2nd Oct 20255612 AMAQI
2nd Oct 2025551 AMAQI
2nd Oct 2025552 AMAQI
2nd Oct 2025593 AMAQI
2nd Oct 2025594 AMAQI

22°C20/24°C

2nd Oct 2025575 AMAQI
2nd Oct 2025566 AMAQI
2nd Oct 2025567 AMAQI
2nd Oct 2025568 AMAQI
2nd Oct 2025589 AMAQI
2nd Oct 20255610 AMAQI
2nd Oct 20255611 AMAQI
2nd Oct 20255612 PMAQI
2nd Oct 2025511 PMAQI
2nd Oct 2025402 PMAQI
2nd Oct 2025483 PMAQI
2nd Oct 2025494 PMAQI
2nd Oct 2025525 PMAQI
2nd Oct 2025536 PMAQI
2nd Oct 2025547 PMAQI
2nd Oct 2025558 PMAQI
2nd Oct 2025569 PMAQI
2nd Oct 20255610 PMAQI
2nd Oct 20255611 PMAQI
3rd Oct 20255312 AMAQI
3rd Oct 2025561 AMAQI
3rd Oct 2025562 AMAQI
3rd Oct 2025563 AMAQI
3rd Oct 2025574 AMAQI

22°C18/26°C

3rd Oct 2025555 AMAQI
3rd Oct 2025556 AMAQI
3rd Oct 2025527 AMAQI
3rd Oct 2025538 AMAQI
3rd Oct 2025539 AMAQI
3rd Oct 20254810 AMAQI
3rd Oct 20255111 AMAQI
3rd Oct 20255312 PMAQI
3rd Oct 2025531 PMAQI
3rd Oct 2025552 PMAQI
3rd Oct 2025523 PMAQI
3rd Oct 2025514 PMAQI
3rd Oct 2025445 PMAQI
3rd Oct 2025446 PMAQI
3rd Oct 2025467 PMAQI
3rd Oct 2025418 PMAQI
3rd Oct 2025539 PMAQI
3rd Oct 20255410 PMAQI
3rd Oct 20255311 PMAQI
4th Oct 20256112 AMAQI
4th Oct 2025611 AMAQI
4th Oct 2025582 AMAQI
4th Oct 2025593 AMAQI
4th Oct 2025614 AMAQI

23°C21/26°C

4th Oct 2025705 AMAQI
4th Oct 2025726 AMAQI
4th Oct 2025687 AMAQI
4th Oct 2025648 AMAQI
4th Oct 2025679 AMAQI
4th Oct 20257410 AMAQI
4th Oct 20256911 AMAQI
4th Oct 20256412 PMAQI
4th Oct 2025581 PMAQI
4th Oct 2025592 PMAQI
4th Oct 2025563 PMAQI
4th Oct 2025554 PMAQI
4th Oct 2025555 PMAQI
4th Oct 2025526 PMAQI
4th Oct 2025507 PMAQI
4th Oct 2025508 PMAQI
4th Oct 2025539 PMAQI
4th Oct 20255510 PMAQI
4th Oct 20255111 PMAQI
5th Oct 20255412 AMAQI
5th Oct 2025541 AMAQI
5th Oct 2025542 AMAQI
5th Oct 2025533 AMAQI
5th Oct 2025464 AMAQI

22°C21/23°C

5th Oct 2025465 AMAQI
5th Oct 2025446 AMAQI
5th Oct 2025447 AMAQI
5th Oct 2025498 AMAQI
5th Oct 2025479 AMAQI
5th Oct 20254510 AMAQI
5th Oct 20254211 AMAQI
5th Oct 20254612 PMAQI
5th Oct 2025481 PMAQI
5th Oct 2025502 PMAQI
5th Oct 2025503 PMAQI
5th Oct 2025504 PMAQI
5th Oct 2025305 PMAQI
5th Oct 2025376 PMAQI
5th Oct 2025497 PMAQI
5th Oct 2025488 PMAQI
5th Oct 2025539 PMAQI
5th Oct 20255510 PMAQI
5th Oct 20255111 PMAQI
6th Oct 20255512 AMAQI
6th Oct 2025531 AMAQI
6th Oct 2025542 AMAQI
6th Oct 2025533 AMAQI
6th Oct 2025524 AMAQI

23°C21/27°C

6th Oct 2025525 AMAQI
6th Oct 2025436 AMAQI
6th Oct 2025497 AMAQI
6th Oct 2025538 AMAQI
6th Oct 2025529 AMAQI
6th Oct 20255510 AMAQI
6th Oct 20255611 AMAQI
6th Oct 20255412 PMAQI
6th Oct 2025441 PMAQI
6th Oct 2025422 PMAQI
6th Oct 2025533 PMAQI
6th Oct 2025564 PMAQI
6th Oct 2025535 PMAQI
6th Oct 2025436 PMAQI
6th Oct 2025407 PMAQI
6th Oct 2025438 PMAQI
6th Oct 2025539 PMAQI
6th Oct 20255810 PMAQI
6th Oct 20255911 PMAQI
7th Oct 20255612 AMAQI
7th Oct 2025551 AMAQI
7th Oct 2025522 AMAQI

24°C20/30°C

7th Oct 2025388 PMAQI
7th Oct 2025339 PMAQI
7th Oct 20256310 PMAQI
7th Oct 20256611 PMAQI
8th Oct 20256412 AMAQI
8th Oct 2025641 AMAQI
8th Oct 2025612 AMAQI
8th Oct 2025573 AMAQI
8th Oct 2025584 AMAQI

24°C22/27°C

8th Oct 2025575 AMAQI
8th Oct 2025586 AMAQI
8th Oct 2025617 AMAQI
8th Oct 2025598 AMAQI
8th Oct 2025599 AMAQI
8th Oct 20255910 AMAQI
8th Oct 20255911 AMAQI
8th Oct 20255712 PMAQI
8th Oct 2025591 PMAQI
8th Oct 2025592 PMAQI
8th Oct 2025623 PMAQI
8th Oct 2025624 PMAQI
8th Oct 2025605 PMAQI
8th Oct 2025626 PMAQI
8th Oct 2025757 PMAQI
8th Oct 2025778 PMAQI
8th Oct 2025709 PMAQI
8th Oct 20256910 PMAQI
8th Oct 20257311 PMAQI
9th Oct 20257212 AMAQI
9th Oct 2025741 AMAQI
9th Oct 2025722 AMAQI
9th Oct 2025733 AMAQI
9th Oct 2025714 AMAQI

25°C22/30°C

9th Oct 2025705 AMAQI
9th Oct 2025636 AMAQI
9th Oct 2025567 AMAQI
9th Oct 2025548 AMAQI
9th Oct 2025529 AMAQI
9th Oct 20255510 AMAQI
9th Oct 20255411 AMAQI
9th Oct 20255312 PMAQI
9th Oct 2025541 PMAQI
9th Oct 2025462 PMAQI
9th Oct 2025403 PMAQI
9th Oct 2025444 PMAQI
9th Oct 2025395 PMAQI
9th Oct 2025496 PMAQI
9th Oct 2025517 PMAQI
9th Oct 2025548 PMAQI
9th Oct 2025509 PMAQI
9th Oct 20255710 PMAQI
9th Oct 20256111 PMAQI
10th Oct 20256112 AMAQI
10th Oct 2025561 AMAQI
10th Oct 2025542 AMAQI
10th Oct 2025523 AMAQI
10th Oct 2025544 AMAQI

25°C22/28°C

10th Oct 2025535 AMAQI
10th Oct 2025546 AMAQI
10th Oct 2025527 AMAQI
10th Oct 2025568 AMAQI
10th Oct 2025569 AMAQI
10th Oct 20255610 AMAQI
10th Oct 20255611 AMAQI
10th Oct 20255612 PMAQI
10th Oct 2025541 PMAQI
10th Oct 2025592 PMAQI
10th Oct 2025613 PMAQI
10th Oct 2025584 PMAQI
10th Oct 2025605 PMAQI
10th Oct 2025606 PMAQI
10th Oct 2025637 PMAQI
10th Oct 2025638 PMAQI
10th Oct 2025599 PMAQI
10th Oct 20255910 PMAQI
10th Oct 20256211 PMAQI
11th Oct 20256612 AMAQI
11th Oct 2025651 AMAQI
11th Oct 2025672 AMAQI
11th Oct 2025663 AMAQI
11th Oct 2025654 AMAQI

21°C20/23°C

11th Oct 2025615 AMAQI
11th Oct 2025596 AMAQI
11th Oct 2025577 AMAQI
11th Oct 2025608 AMAQI
11th Oct 2025599 AMAQI
11th Oct 20256210 AMAQI
11th Oct 20256011 AMAQI
11th Oct 20256612 PMAQI
11th Oct 2025651 PMAQI
11th Oct 2025642 PMAQI
11th Oct 2025603 PMAQI
11th Oct 2025604 PMAQI
11th Oct 2025625 PMAQI
11th Oct 2025566 PMAQI
11th Oct 2025537 PMAQI
11th Oct 2025498 PMAQI
11th Oct 2025529 PMAQI
11th Oct 20256510 PMAQI
11th Oct 20256411 PMAQI
12th Oct 20256412 AMAQI
12th Oct 2025591 AMAQI
12th Oct 2025562 AMAQI
12th Oct 2025533 AMAQI
12th Oct 2025534 AMAQI

21°C21/22°C

12th Oct 2025535 AMAQI
12th Oct 2025526 AMAQI
12th Oct 2025507 AMAQI
12th Oct 2025408 AMAQI
12th Oct 2025479 AMAQI
12th Oct 20255110 AMAQI
12th Oct 20254311 AMAQI
12th Oct 20253812 PMAQI
12th Oct 2025451 PMAQI
12th Oct 2025512 PMAQI
12th Oct 2025523 PMAQI
12th Oct 2025544 PMAQI
12th Oct 2025545 PMAQI
12th Oct 2025536 PMAQI
12th Oct 2025487 PMAQI
12th Oct 2025498 PMAQI
12th Oct 2025549 PMAQI
12th Oct 20256310 PMAQI
12th Oct 20256211 PMAQI
13th Oct 20256512 AMAQI
13th Oct 2025641 AMAQI
13th Oct 2025622 AMAQI
13th Oct 2025623 AMAQI
13th Oct 2025564 AMAQI

23°C21/27°C

13th Oct 2025565 AMAQI
5 AM
13th Oct 2025566 AMAQI
13th Oct 2025537 AMAQI
13th Oct 2025548 AMAQI
13th Oct 2025529 AMAQI
13th Oct 20255210 AMAQI
13th Oct 20255211 AMAQI
11 AM
13th Oct 20255312 PMAQI
13th Oct 2025481 PMAQI
13th Oct 2025472 PMAQI
13th Oct 2025423 PMAQI
13th Oct 2025474 PMAQI
13th Oct 2025415 PMAQI
5 PM
13th Oct 2025416 PMAQI
13th Oct 2025527 PMAQI
13th Oct 2025508 PMAQI
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

43AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
9 AM - 5 PM

41AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 43), while the lowest AQI was between 9 AM to 5 PM (Avg. 41).
Night time
Avg. Highest Time
10 PM - 11 PM

46AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
6 PM - 8 PM

41AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 46), while the lowest AQI was between 6 PM to 8 PM (Avg. 41).

2025 Days Vs Air Quality

Yahagicho, Okazaki, Aichi, Japan

2025

88%

250

12%

35

Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)

Good
250 Days
Moderate
35 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 88%

Health Risk Level:

Low

In 2025, 88% of 286 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

Yahagicho, Okazaki, Aichi, 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
31AQI
2nd January 2025
34AQI
3rd January 2025
31AQI
4th January 2025
26AQI
5th January 2025
25AQI
6th January 2025
23AQI
7th January 2025
26AQI
8th January 2025
25AQI
9th January 2025
26AQI
10th January 2025
21AQI
11th January 2025
24AQI
12th January 2025
22AQI
13th January 2025
25AQI
14th January 2025
29AQI
15th January 2025
29AQI
16th January 2025
23AQI
17th January 2025
27AQI
18th January 2025
24AQI
19th January 2025
29AQI
20th January 2025
26AQI
21st January 2025
32AQI
22nd January 2025
30AQI
23rd January 2025
37AQI
24th January 2025
36AQI
25th January 2025
35AQI
26th January 2025
31AQI
27th January 2025
24AQI
28th January 2025
30AQI
29th January 2025
27AQI
30th January 2025
28AQI
31st January 2025
32AQI
1st February 2025
36AQI
2nd February 2025
26AQI
3rd February 2025
30AQI
4th February 2025
29AQI
5th February 2025
30AQI
6th February 2025
28AQI
7th February 2025
30AQI
8th February 2025
27AQI
9th February 2025
28AQI
10th February 2025
27AQI
11th February 2025
29AQI
12th February 2025
25AQI
13th February 2025
32AQI
14th February 2025
26AQI
15th February 2025
29AQI
16th February 2025
30AQI
17th February 2025
31AQI
18th February 2025
29AQI
19th February 2025
29AQI
20th February 2025
27AQI
21st February 2025
27AQI
22nd February 2025
28AQI
23rd February 2025
29AQI
24th February 2025
30AQI
25th February 2025
31AQI
26th February 2025
35AQI
27th February 2025
38AQI
28th February 2025
37AQI
1st March 2025
38AQI
2nd March 2025
38AQI
3rd March 2025
31AQI
4th March 2025
25AQI
5th March 2025
22AQI
6th March 2025
30AQI
7th March 2025
30AQI
8th March 2025
30AQI
9th March 2025
34AQI
10th March 2025
33AQI
11th March 2025
28AQI
12th March 2025
26AQI
13th March 2025
34AQI
14th March 2025
23AQI
15th March 2025
22AQI
16th March 2025
18AQI
17th March 2025
16AQI
18th March 2025
17AQI
19th March 2025
14AQI
20th March 2025
20AQI
21st March 2025
29AQI
22nd March 2025
29AQI
23rd March 2025
35AQI
24th March 2025
33AQI
25th March 2025
51AQI
26th March 2025
74AQI
27th March 2025
63AQI
28th March 2025
42AQI
29th March 2025
33AQI
30th March 2025
33AQI
31st March 2025
33AQI
1st April 2025
23AQI
2nd April 2025
25AQI
3rd April 2025
18AQI
4th April 2025
18AQI
5th April 2025
18AQI
6th April 2025
15AQI
7th April 2025
16AQI
8th April 2025
18AQI
9th April 2025
17AQI
10th April 2025
22AQI
11th April 2025
23AQI
12th April 2025
24AQI
13th April 2025
19AQI
14th April 2025
22AQI
15th April 2025
18AQI
16th April 2025
20AQI
17th April 2025
22AQI
18th April 2025
27AQI
19th April 2025
29AQI
20th April 2025
25AQI
21st April 2025
22AQI
22nd April 2025
19AQI
23rd April 2025
15AQI
24th April 2025
13AQI
25th April 2025
20AQI
26th April 2025
20AQI
27th April 2025
21AQI
28th April 2025
19AQI
29th April 2025
20AQI
30th April 2025
21AQI
1st May 2025
19AQI
2nd May 2025
17AQI
3rd May 2025
19AQI
4th May 2025
19AQI
5th May 2025
18AQI
6th May 2025
16AQI
7th May 2025
16AQI
8th May 2025
16AQI
9th May 2025
16AQI
10th May 2025
14AQI
11th May 2025
15AQI
12th May 2025
21AQI
13th May 2025
23AQI
14th May 2025
25AQI
15th May 2025
25AQI
16th May 2025
23AQI
17th May 2025
22AQI
18th May 2025
26AQI
19th May 2025
29AQI
20th May 2025
37AQI
21st May 2025
33AQI
22nd May 2025
26AQI
23rd May 2025
24AQI
24th May 2025
24AQI
25th May 2025
17AQI
26th May 2025
19AQI
27th May 2025
19AQI
28th May 2025
16AQI
29th May 2025
19AQI
30th May 2025
17AQI
31st May 2025
17AQI
1st June 2025
16AQI
2nd June 2025
20AQI
3rd June 2025
16AQI
4th June 2025
21AQI
5th June 2025
20AQI
6th June 2025
22AQI
7th June 2025
27AQI
8th June 2025
32AQI
9th June 2025
23AQI
10th June 2025
19AQI
11th June 2025
18AQI
12th June 2025
21AQI
13th June 2025
20AQI
14th June 2025
18AQI
15th June 2025
16AQI
16th June 2025
18AQI
17th June 2025
22AQI
18th June 2025
22AQI
19th June 2025
26AQI
20th June 2025
27AQI
21st June 2025
25AQI
22nd June 2025
22AQI
23rd June 2025
19AQI
24th June 2025
18AQI
25th June 2025
18AQI
26th June 2025
16AQI
27th June 2025
19AQI
28th June 2025
18AQI
29th June 2025
19AQI
30th June 2025
34AQI
1st July 2025
41AQI
2nd July 2025
50AQI
3rd July 2025
59AQI
4th July 2025
59AQI
5th July 2025
69AQI
6th July 2025
61AQI
7th July 2025
68AQI
8th July 2025
73AQI
9th July 2025
80AQI
10th July 2025
62AQI
11th July 2025
56AQI
12th July 2025
55AQI
13th July 2025
54AQI
14th July 2025
48AQI
15th July 2025
50AQI
16th July 2025
50AQI
17th July 2025
46AQI
18th July 2025
42AQI
19th July 2025
39AQI
20th July 2025
33AQI
21st July 2025
31AQI
22nd July 2025
32AQI
23rd July 2025
33AQI
24th July 2025
31AQI
25th July 2025
25AQI
26th July 2025
25AQI
27th July 2025
25AQI
28th July 2025
29AQI
29th July 2025
37AQI
30th July 2025
37AQI
31st July 2025
36AQI
1st August 2025
43AQI
2nd August 2025
44AQI
3rd August 2025
47AQI
4th August 2025
65AQI
5th August 2025
52AQI
6th August 2025
53AQI
7th August 2025
46AQI
8th August 2025
43AQI
9th August 2025
50AQI
10th August 2025
44AQI
11th August 2025
37AQI
12th August 2025
35AQI
13th August 2025
35AQI
14th August 2025
41AQI
15th August 2025
39AQI
16th August 2025
41AQI
17th August 2025
40AQI
18th August 2025
45AQI
19th August 2025
48AQI
20th August 2025
48AQI
21st August 2025
50AQI
22nd August 2025
46AQI
23rd August 2025
49AQI
24th August 2025
57AQI
25th August 2025
58AQI
26th August 2025
56AQI
27th August 2025
53AQI
28th August 2025
49AQI
29th August 2025
55AQI
30th August 2025
56AQI
31st August 2025
54AQI
1st September 2025
44AQI
2nd September 2025
36AQI
3rd September 2025
40AQI
4th September 2025
25AQI
5th September 2025
25AQI
6th September 2025
28AQI
7th September 2025
31AQI
8th September 2025
38AQI
9th September 2025
41AQI
10th September 2025
35AQI
11th September 2025
30AQI
12th September 2025
30AQI
13th September 2025
28AQI
14th September 2025
37AQI
15th September 2025
35AQI
16th September 2025
45AQI
17th September 2025
51AQI
18th September 2025
42AQI
19th September 2025
36AQI
20th September 2025
38AQI
21st September 2025
29AQI
22nd September 2025
33AQI
23rd September 2025
35AQI
24th September 2025
32AQI
25th September 2025
43AQI
26th September 2025
36AQI
27th September 2025
34AQI
28th September 2025
35AQI
29th September 2025
29AQI
30th September 2025
27AQI
1st October 2025
37AQI
2nd October 2025
55AQI
3rd October 2025
52AQI
4th October 2025
58AQI
5th October 2025
49AQI
6th October 2025
52AQI
7th October 2025
53AQI
8th October 2025
64AQI
9th October 2025
59AQI
10th October 2025
58AQI
11th October 2025
62AQI
12th October 2025
55AQI
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

28AQI

30AQI

32AQI

20AQI

21AQI

21AQI

46AQI

48AQI

35AQI

55AQI

No. of days

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

202532AQI

31
28
28
3
30
31
30
20
11
21
10
29
1
2
10
250
35

Highest AQI recorded in

October

55AQI

Lowest AQI recorded in

April

20AQI

202438AQI

28
1
27
2
27
4
17
13
28
3
26
4
26
5
24
7
24
6
28
3
25
5
31
311
53

Highest AQI recorded in

April

50AQI

Lowest AQI recorded in

December

24AQI

202340AQI

28
3
25
3
27
4
18
12
25
6
20
10
21
10
29
2
28
2
26
2
24
5
26
5
297
64

Highest AQI recorded in

April

49AQI

Lowest AQI recorded in

August

31AQI

202238AQI

29
1
20
1
24
7
11
5
19
12
23
7
18
3
1
24
4
25
4
27
3
31
252
47

Highest AQI recorded in

May

46AQI

Lowest AQI recorded in

December

29AQI

202137AQI

28
3
24
4
25
6
18
4
25
6
24
6
20
11
26
5
23
7
27
2
27
3
31
298
57

Highest AQI recorded in

July

45AQI

Lowest AQI recorded in

December

31AQI

202037AQI

13
19
2
16
2
22
8
29
2
17
14
11
25
4
24
6
29
2
205
40

Highest AQI recorded in

August

49AQI

Lowest AQI recorded in

September

29AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
40AQI
Least Polluted Year Recorded
2025(Avg.)
32AQI

Yahagicho's annual 2025 AQI (32) shows an average percentage change of -14.8% (improved AQI) compared to previous years: 2020 (37), 2021 (37), 2022 (38), 2023 (40), 2024 (38).