Ayase, Yashio, Saitama, 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
Ayase, Yashio, Saitama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
70AQILowest AQI recorded on
6th Aug 2021
8AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 41 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Ayase, Yashio, Saitama, Japan
AQI
Day
Night
.
4 AM3rd Aug 2025
6 PM
3 AM4th Aug 2025
Day time
Avg. Highest Time
12PM3rd Aug
60AQI
Avg. Lowest Time
8AM3rd Aug
38AQI
Night time
Avg. Highest Time
7PM3rd Aug
45AQI
Avg. Lowest Time
2AM4th Aug
38AQI
In the last 24 hours,
Ayase's AQI reached its highest point of 60 at 12 PM during the Day, while the lowest point, 38, was recorded at 2 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ayase, Yashio, Saitama, Japan
JulAug
05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025424 AMAQI
5th Jul 2025445 AMAQI
5th Jul 2025446 AMAQI
5th Jul 2025447 AMAQI
5th Jul 2025468 AMAQI
5th Jul 2025429 AMAQI
5th Jul 20254610 AMAQI
5th Jul 20255111 AMAQI
5th Jul 20255912 PMAQI
5th Jul 2025571 PMAQI
5th Jul 2025582 PMAQI
5th Jul 2025623 PMAQI
5th Jul 2025624 PMAQI
5th Jul 2025675 PMAQI
5th Jul 2025686 PMAQI
5th Jul 2025707 PMAQI
5th Jul 2025688 PMAQI
5th Jul 2025609 PMAQI
5th Jul 20256110 PMAQI
5th Jul 20256011 PMAQI
6th Jul 20256012 AMAQI
6th Jul 2025521 AMAQI
6th Jul 2025412 AMAQI
6th Jul 2025413 AMAQI
30°C27/33°C
6th Jul 2025424 AMAQI
6th Jul 2025455 AMAQI
6th Jul 2025456 AMAQI
6th Jul 2025467 AMAQI
6th Jul 2025468 AMAQI
6th Jul 2025569 AMAQI
6th Jul 20257410 AMAQI
6th Jul 20257811 AMAQI
6th Jul 20258512 PMAQI
6th Jul 2025821 PMAQI
6th Jul 2025812 PMAQI
6th Jul 2025823 PMAQI
6th Jul 2025864 PMAQI
6th Jul 2025915 PMAQI
6th Jul 2025956 PMAQI
6th Jul 20251007 PMAQI
6th Jul 2025978 PMAQI
6th Jul 2025779 PMAQI
6th Jul 20257610 PMAQI
6th Jul 20257811 PMAQI
7th Jul 20257612 AMAQI
7th Jul 2025701 AMAQI
7th Jul 2025492 AMAQI
7th Jul 2025503 AMAQI
31°C28/36°C
7th Jul 2025534 AMAQI
7th Jul 2025555 AMAQI
7th Jul 2025566 AMAQI
7th Jul 2025557 AMAQI
7th Jul 2025568 AMAQI
7th Jul 20251079 AMAQI
7th Jul 202511810 AMAQI
7th Jul 202511611 AMAQI
7th Jul 202511012 PMAQI
7th Jul 20251021 PMAQI
7th Jul 2025942 PMAQI
7th Jul 2025953 PMAQI
7th Jul 2025954 PMAQI
7th Jul 2025975 PMAQI
7th Jul 20251046 PMAQI
7th Jul 20251157 PMAQI
7th Jul 20251068 PMAQI
7th Jul 2025789 PMAQI
7th Jul 20257810 PMAQI
7th Jul 20257911 PMAQI
8th Jul 20258012 AMAQI
8th Jul 2025721 AMAQI
8th Jul 2025572 AMAQI
8th Jul 2025583 AMAQI
31°C28/35°C
8th Jul 2025604 AMAQI
8th Jul 2025665 AMAQI
8th Jul 2025676 AMAQI
8th Jul 2025687 AMAQI
8th Jul 2025678 AMAQI
8th Jul 20251079 AMAQI
8th Jul 202511910 AMAQI
8th Jul 202511511 AMAQI
8th Jul 202510412 PMAQI
8th Jul 2025921 PMAQI
8th Jul 2025802 PMAQI
8th Jul 2025783 PMAQI
8th Jul 2025844 PMAQI
8th Jul 2025865 PMAQI
8th Jul 2025876 PMAQI
8th Jul 2025847 PMAQI
8th Jul 2025828 PMAQI
8th Jul 2025789 PMAQI
8th Jul 20258010 PMAQI
8th Jul 20258211 PMAQI
9th Jul 20258412 AMAQI
9th Jul 2025801 AMAQI
9th Jul 2025652 AMAQI
9th Jul 2025653 AMAQI
31°C28/35°C
9th Jul 2025684 AMAQI
9th Jul 2025725 AMAQI
9th Jul 2025726 AMAQI
9th Jul 2025727 AMAQI
9th Jul 2025728 AMAQI
9th Jul 20251009 AMAQI
9th Jul 202511610 AMAQI
9th Jul 202510811 AMAQI
9th Jul 202510112 PMAQI
9th Jul 20251021 PMAQI
9th Jul 2025992 PMAQI
9th Jul 20251043 PMAQI
9th Jul 20251084 PMAQI
9th Jul 20251085 PMAQI
9th Jul 2025966 PMAQI
9th Jul 2025717 PMAQI
9th Jul 2025588 PMAQI
9th Jul 2025599 PMAQI
9th Jul 20255910 PMAQI
9th Jul 20255911 PMAQI
10th Jul 20255912 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025722 AMAQI
10th Jul 2025713 AMAQI
31°C28/35°C
10th Jul 2025744 AMAQI
10th Jul 2025785 AMAQI
10th Jul 2025786 AMAQI
10th Jul 2025787 AMAQI
10th Jul 2025788 AMAQI
10th Jul 2025429 AMAQI
10th Jul 20254810 AMAQI
10th Jul 20255811 AMAQI
10th Jul 20255812 PMAQI
10th Jul 2025551 PMAQI
10th Jul 2025502 PMAQI
10th Jul 2025413 PMAQI
10th Jul 2025324 PMAQI
10th Jul 2025415 PMAQI
10th Jul 2025446 PMAQI
10th Jul 2025527 PMAQI
10th Jul 2025558 PMAQI
10th Jul 2025609 PMAQI
10th Jul 20255810 PMAQI
10th Jul 20255611 PMAQI
11th Jul 20255712 AMAQI
11th Jul 2025631 AMAQI
11th Jul 2025712 AMAQI
11th Jul 2025703 AMAQI
29°C23/35°C
11th Jul 2025714 AMAQI
11th Jul 2025675 AMAQI
11th Jul 2025676 AMAQI
11th Jul 2025687 AMAQI
11th Jul 2025688 AMAQI
11th Jul 2025299 AMAQI
11th Jul 20251710 AMAQI
11th Jul 20252011 AMAQI
11th Jul 20252112 PMAQI
11th Jul 2025281 PMAQI
11th Jul 2025312 PMAQI
11th Jul 2025323 PMAQI
11th Jul 2025284 PMAQI
11th Jul 2025285 PMAQI
11th Jul 2025296 PMAQI
11th Jul 2025297 PMAQI
11th Jul 2025408 PMAQI
11th Jul 2025579 PMAQI
11th Jul 20255610 PMAQI
11th Jul 20255611 PMAQI
12th Jul 20255612 AMAQI
12th Jul 2025601 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI
24°C22/27°C
12th Jul 2025644 AMAQI
12th Jul 2025605 AMAQI
12th Jul 2025606 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025608 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20253710 AMAQI
12th Jul 20254111 AMAQI
12th Jul 20254512 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025403 PMAQI
12th Jul 2025414 PMAQI
12th Jul 2025405 PMAQI
12th Jul 2025406 PMAQI
12th Jul 2025397 PMAQI
12th Jul 2025428 PMAQI
12th Jul 2025529 PMAQI
12th Jul 20255210 PMAQI
12th Jul 20255211 PMAQI
13th Jul 20255312 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025612 AMAQI
13th Jul 2025613 AMAQI
25°C22/29°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025449 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20253811 AMAQI
13th Jul 20254712 PMAQI
13th Jul 2025481 PMAQI
13th Jul 2025442 PMAQI
13th Jul 2025433 PMAQI
13th Jul 2025444 PMAQI
13th Jul 2025455 PMAQI
13th Jul 2025466 PMAQI
13th Jul 2025367 PMAQI
13th Jul 2025318 PMAQI
13th Jul 2025469 PMAQI
13th Jul 20254210 PMAQI
13th Jul 20254411 PMAQI
14th Jul 20254412 AMAQI
14th Jul 2025511 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025583 AMAQI
27°C24/31°C
14th Jul 2025584 AMAQI
14th Jul 2025565 AMAQI
14th Jul 2025566 AMAQI
14th Jul 2025567 AMAQI
14th Jul 2025568 AMAQI
14th Jul 2025329 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20252211 AMAQI
14th Jul 20252512 PMAQI
14th Jul 2025231 PMAQI
14th Jul 2025222 PMAQI
14th Jul 2025223 PMAQI
14th Jul 2025254 PMAQI
14th Jul 2025265 PMAQI
14th Jul 2025256 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025469 PMAQI
14th Jul 20254410 PMAQI
14th Jul 20254411 PMAQI
15th Jul 20254412 AMAQI
15th Jul 2025491 AMAQI
15th Jul 2025552 AMAQI
15th Jul 2025553 AMAQI
26°C25/29°C
15th Jul 2025544 AMAQI
15th Jul 2025525 AMAQI
15th Jul 2025526 AMAQI
15th Jul 2025527 AMAQI
15th Jul 2025528 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20252611 AMAQI
15th Jul 20253012 PMAQI
15th Jul 2025331 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025313 PMAQI
15th Jul 2025324 PMAQI
15th Jul 2025325 PMAQI
15th Jul 2025366 PMAQI
15th Jul 2025327 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025349 PMAQI
15th Jul 20253510 PMAQI
15th Jul 20253811 PMAQI
16th Jul 20254312 AMAQI
16th Jul 2025491 AMAQI
16th Jul 2025522 AMAQI
16th Jul 2025523 AMAQI
27°C26/30°C
16th Jul 2025524 AMAQI
16th Jul 2025485 AMAQI
16th Jul 2025496 AMAQI
16th Jul 2025497 AMAQI
16th Jul 2025498 AMAQI
16th Jul 2025529 AMAQI
16th Jul 20254210 AMAQI
16th Jul 20253211 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025291 PMAQI
16th Jul 2025272 PMAQI
16th Jul 2025283 PMAQI
16th Jul 2025254 PMAQI
16th Jul 2025265 PMAQI
16th Jul 2025256 PMAQI
16th Jul 2025217 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025409 PMAQI
16th Jul 20253910 PMAQI
16th Jul 20253811 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025441 AMAQI
17th Jul 2025502 AMAQI
17th Jul 2025513 AMAQI
28°C26/30°C
17th Jul 2025504 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025487 AMAQI
17th Jul 2025488 AMAQI
17th Jul 2025319 AMAQI
17th Jul 20253610 AMAQI
17th Jul 20254711 AMAQI
17th Jul 20254612 PMAQI
17th Jul 2025441 PMAQI
17th Jul 2025462 PMAQI
17th Jul 2025433 PMAQI
17th Jul 2025424 PMAQI
17th Jul 2025415 PMAQI
17th Jul 2025476 PMAQI
17th Jul 2025457 PMAQI
17th Jul 2025428 PMAQI
17th Jul 2025449 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254411 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025482 AMAQI
18th Jul 2025483 AMAQI
29°C27/32°C
18th Jul 2025474 AMAQI
18th Jul 2025465 AMAQI
18th Jul 2025456 AMAQI
18th Jul 2025467 AMAQI
18th Jul 2025468 AMAQI
18th Jul 2025389 AMAQI
18th Jul 20253710 AMAQI
18th Jul 20254711 AMAQI
18th Jul 20253812 PMAQI
18th Jul 2025321 PMAQI
18th Jul 2025272 PMAQI
18th Jul 2025313 PMAQI
18th Jul 2025304 PMAQI
18th Jul 2025255 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025247 PMAQI
18th Jul 2025278 PMAQI
18th Jul 2025379 PMAQI
18th Jul 20253810 PMAQI
18th Jul 20253611 PMAQI
19th Jul 20253612 AMAQI
19th Jul 2025401 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025463 AMAQI
28°C26/32°C
19th Jul 2025454 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025436 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20253511 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025257 PMAQI
19th Jul 2025318 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025432 AMAQI
20th Jul 2025433 AMAQI
29°C26/33°C
20th Jul 2025424 AMAQI
20th Jul 2025405 AMAQI
20th Jul 2025406 AMAQI
20th Jul 2025407 AMAQI
20th Jul 2025408 AMAQI
20th Jul 2025299 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025301 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025273 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025286 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025358 PMAQI
20th Jul 2025369 PMAQI
20th Jul 20253410 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025361 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025403 AMAQI
30°C27/34°C
21st Jul 2025384 AMAQI
21st Jul 2025375 AMAQI
21st Jul 2025376 AMAQI
21st Jul 2025377 AMAQI
21st Jul 2025378 AMAQI
21st Jul 2025269 AMAQI
21st Jul 20252610 AMAQI
21st Jul 20253711 AMAQI
21st Jul 20254412 PMAQI
21st Jul 2025431 PMAQI
21st Jul 2025382 PMAQI
21st Jul 2025333 PMAQI
21st Jul 2025334 PMAQI
21st Jul 2025375 PMAQI
21st Jul 2025356 PMAQI
21st Jul 2025367 PMAQI
21st Jul 2025348 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253310 PMAQI
21st Jul 20253211 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025341 AMAQI
22nd Jul 2025382 AMAQI
22nd Jul 2025383 AMAQI
31°C27/35°C
22nd Jul 2025384 AMAQI
22nd Jul 2025375 AMAQI
22nd Jul 2025376 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025289 AMAQI
22nd Jul 20254210 AMAQI
22nd Jul 20255011 AMAQI
22nd Jul 20254812 PMAQI
22nd Jul 2025451 PMAQI
22nd Jul 2025462 PMAQI
22nd Jul 2025483 PMAQI
22nd Jul 2025484 PMAQI
22nd Jul 2025465 PMAQI
22nd Jul 2025386 PMAQI
22nd Jul 2025317 PMAQI
22nd Jul 2025308 PMAQI
22nd Jul 2025319 PMAQI
22nd Jul 20253110 PMAQI
22nd Jul 20253211 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025351 AMAQI
23rd Jul 2025372 AMAQI
23rd Jul 2025363 AMAQI
31°C28/35°C
23rd Jul 2025384 AMAQI
23rd Jul 2025385 AMAQI
23rd Jul 2025386 AMAQI
23rd Jul 2025387 AMAQI
23rd Jul 2025388 AMAQI
23rd Jul 2025319 AMAQI
23rd Jul 20253910 AMAQI
23rd Jul 20255111 AMAQI
23rd Jul 20255312 PMAQI
23rd Jul 2025531 PMAQI
23rd Jul 2025542 PMAQI
23rd Jul 2025553 PMAQI
23rd Jul 2025534 PMAQI
23rd Jul 2025525 PMAQI
23rd Jul 2025466 PMAQI
23rd Jul 2025357 PMAQI
23rd Jul 2025298 PMAQI
23rd Jul 2025339 PMAQI
23rd Jul 20253610 PMAQI
23rd Jul 20253811 PMAQI
24th Jul 20253112 AMAQI
24th Jul 2025341 AMAQI
24th Jul 2025362 AMAQI
24th Jul 2025373 AMAQI
31°C27/35°C
24th Jul 2025374 AMAQI
24th Jul 2025405 AMAQI
24th Jul 2025396 AMAQI
24th Jul 2025397 AMAQI
24th Jul 2025398 AMAQI
24th Jul 2025369 AMAQI
24th Jul 20254410 AMAQI
24th Jul 20255611 AMAQI
24th Jul 20256012 PMAQI
24th Jul 2025591 PMAQI
24th Jul 2025612 PMAQI
24th Jul 2025673 PMAQI
24th Jul 2025604 PMAQI
24th Jul 2025565 PMAQI
24th Jul 2025496 PMAQI
24th Jul 2025367 PMAQI
24th Jul 2025388 PMAQI
24th Jul 2025329 PMAQI
24th Jul 20253410 PMAQI
24th Jul 20253511 PMAQI
25th Jul 20253512 AMAQI
25th Jul 2025351 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025373 AMAQI
31°C28/36°C
25th Jul 2025384 AMAQI
25th Jul 2025425 AMAQI
25th Jul 2025426 AMAQI
25th Jul 2025427 AMAQI
25th Jul 2025418 AMAQI
25th Jul 2025429 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20255711 AMAQI
25th Jul 20255812 PMAQI
25th Jul 2025561 PMAQI
25th Jul 2025472 PMAQI
25th Jul 2025483 PMAQI
25th Jul 2025414 PMAQI
25th Jul 2025325 PMAQI
25th Jul 2025276 PMAQI
25th Jul 2025267 PMAQI
25th Jul 2025308 PMAQI
25th Jul 2025339 PMAQI
25th Jul 20253210 PMAQI
25th Jul 20253111 PMAQI
26th Jul 20253212 AMAQI
26th Jul 2025341 AMAQI
26th Jul 2025372 AMAQI
26th Jul 2025383 AMAQI
31°C29/35°C
26th Jul 2025394 AMAQI
26th Jul 2025415 AMAQI
26th Jul 2025426 AMAQI
26th Jul 2025427 AMAQI
26th Jul 2025418 AMAQI
26th Jul 2025349 AMAQI
26th Jul 20254210 AMAQI
26th Jul 20255611 AMAQI
26th Jul 20255312 PMAQI
26th Jul 2025451 PMAQI
26th Jul 2025382 PMAQI
26th Jul 2025393 PMAQI
26th Jul 2025394 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025346 PMAQI
26th Jul 2025367 PMAQI
26th Jul 2025318 PMAQI
26th Jul 2025359 PMAQI
26th Jul 20253510 PMAQI
26th Jul 20254111 PMAQI
27th Jul 20253312 AMAQI
27th Jul 2025351 AMAQI
27th Jul 2025382 AMAQI
27th Jul 2025383 AMAQI
31°C29/35°C
27th Jul 2025384 AMAQI
27th Jul 2025395 AMAQI
27th Jul 2025386 AMAQI
27th Jul 2025397 AMAQI
27th Jul 2025398 AMAQI
27th Jul 2025309 AMAQI
27th Jul 20253210 AMAQI
27th Jul 20255111 AMAQI
27th Jul 20255112 PMAQI
27th Jul 2025401 PMAQI
27th Jul 2025332 PMAQI
27th Jul 2025363 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025285 PMAQI
27th Jul 2025266 PMAQI
27th Jul 2025247 PMAQI
27th Jul 2025288 PMAQI
27th Jul 2025319 PMAQI
27th Jul 20253010 PMAQI
27th Jul 20253111 PMAQI
28th Jul 20252912 AMAQI
28th Jul 2025321 AMAQI
28th Jul 2025372 AMAQI
28th Jul 2025373 AMAQI
31°C28/35°C
28th Jul 2025384 AMAQI
28th Jul 2025375 AMAQI
28th Jul 2025386 AMAQI
28th Jul 2025387 AMAQI
28th Jul 2025378 AMAQI
28th Jul 2025289 AMAQI
28th Jul 20253210 AMAQI
28th Jul 20254411 AMAQI
28th Jul 20255212 PMAQI
28th Jul 2025551 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025573 PMAQI
28th Jul 2025604 PMAQI
28th Jul 2025585 PMAQI
28th Jul 2025546 PMAQI
28th Jul 2025507 PMAQI
28th Jul 2025438 PMAQI
28th Jul 2025399 PMAQI
28th Jul 20253910 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253312 AMAQI
29th Jul 2025341 AMAQI
29th Jul 2025362 AMAQI
29th Jul 2025353 AMAQI
31°C28/37°C
29th Jul 2025364 AMAQI
29th Jul 2025395 AMAQI
29th Jul 2025406 AMAQI
29th Jul 2025407 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025409 AMAQI
29th Jul 20254210 AMAQI
29th Jul 20254411 AMAQI
29th Jul 20254912 PMAQI
29th Jul 2025551 PMAQI
29th Jul 2025542 PMAQI
29th Jul 2025513 PMAQI
29th Jul 2025474 PMAQI
29th Jul 2025435 PMAQI
29th Jul 2025326 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025258 PMAQI
29th Jul 2025289 PMAQI
29th Jul 20252710 PMAQI
29th Jul 20252711 PMAQI
30th Jul 20252612 AMAQI
30th Jul 2025291 AMAQI
30th Jul 2025352 AMAQI
30th Jul 2025363 AMAQI
32°C27/38°C
30th Jul 2025364 AMAQI
30th Jul 2025385 AMAQI
30th Jul 2025386 AMAQI
30th Jul 2025387 AMAQI
30th Jul 2025388 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20252511 AMAQI
30th Jul 20252712 PMAQI
30th Jul 2025311 PMAQI
30th Jul 2025302 PMAQI
30th Jul 2025243 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025265 PMAQI
30th Jul 2025266 PMAQI
30th Jul 2025337 PMAQI
30th Jul 2025368 PMAQI
30th Jul 2025359 PMAQI
30th Jul 20253410 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253412 AMAQI
31st Jul 2025341 AMAQI
31st Jul 2025342 AMAQI
31st Jul 2025343 AMAQI
30°C27/36°C
31st Jul 2025344 AMAQI
31st Jul 2025345 AMAQI
31st Jul 2025346 AMAQI
31st Jul 2025347 AMAQI
31st Jul 2025348 AMAQI
31st Jul 2025349 AMAQI
31st Jul 20253410 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20254212 PMAQI
31st Jul 2025351 PMAQI
31st Jul 2025292 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025244 PMAQI
31st Jul 2025235 PMAQI
31st Jul 2025246 PMAQI
31st Jul 2025247 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252811 PMAQI
1st Aug 20252612 AMAQI
1st Aug 2025291 AMAQI
1st Aug 2025362 AMAQI
1st Aug 2025363 AMAQI
29°C25/34°C
1st Aug 2025364 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025366 AMAQI
1st Aug 2025377 AMAQI
1st Aug 2025368 AMAQI
1st Aug 2025329 AMAQI
1st Aug 20253010 AMAQI
1st Aug 20253711 AMAQI
1st Aug 20253612 PMAQI
1st Aug 2025311 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025353 PMAQI
1st Aug 2025374 PMAQI
1st Aug 2025385 PMAQI
1st Aug 2025366 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025338 PMAQI
1st Aug 2025279 PMAQI
1st Aug 20253110 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20252912 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025372 AMAQI
2nd Aug 2025373 AMAQI
28°C26/32°C
2nd Aug 2025384 AMAQI
2nd Aug 2025385 AMAQI
2nd Aug 2025406 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20253410 AMAQI
2nd Aug 20254111 AMAQI
2nd Aug 20254012 PMAQI
2nd Aug 2025441 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025533 PMAQI
2nd Aug 2025484 PMAQI
2nd Aug 2025475 PMAQI
2nd Aug 2025556 PMAQI
2nd Aug 2025537 PMAQI
2nd Aug 2025388 PMAQI
2nd Aug 2025359 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20254211 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
31°C27/36°C
3rd Aug 2025404 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025449 AMAQI
3rd Aug 20255410 AMAQI
3rd Aug 20255811 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025531 PMAQI
3rd Aug 2025552 PMAQI
3rd Aug 2025513 PMAQI
3rd Aug 2025474 PMAQI
3rd Aug 2025495 PMAQI
3rd Aug 2025486 PMAQI
3rd Aug 2025457 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025429 PMAQI
3rd Aug 20254210 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20253812 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025393 AMAQI
32°C28/37°C
4th Aug 2025414 AMAQI
4 AM4th Aug 2025425 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025427 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025609 AMAQI
4th Aug 20256610 AMAQI
4th Aug 20258211 AMAQI
11 AM4th Aug 20257912 PMAQI
4th Aug 2025921 PMAQI
4th Aug 2025862 PMAQI
4th Aug 2025833 PMAQI
4th Aug 2025874 PMAQI
4th Aug 2025885 PMAQI
4th Aug 2025776 PMAQI
6 PM11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 6 PM
49AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
9 AM - 10 AM
44AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 6 PM (Avg. 49), while the lowest AQI was between 9 AM to 10 AM (Avg. 44).
Night time
Avg. Highest Time
12 AM - 3 AM
45AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM - 11 PM
43AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 45), while the lowest AQI was between 7 PM to 11 PM (Avg. 43).
2025 Days Vs Air Quality
Ayase, Yashio, Saitama, Japan
2025
96%
206
4%
9
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
206 DaysModerate
9 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 216 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Ayase, Yashio, Saitama, 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.
1st January 2025
27AQI
27AQI
2nd January 2025
27AQI
27AQI
3rd January 2025
23AQI
23AQI
4th January 2025
25AQI
25AQI
5th January 2025
24AQI
24AQI
6th January 2025
30AQI
30AQI
7th January 2025
26AQI
26AQI
8th January 2025
24AQI
24AQI
9th January 2025
24AQI
24AQI
10th January 2025
27AQI
27AQI
11th January 2025
24AQI
24AQI
12th January 2025
27AQI
27AQI
13th January 2025
29AQI
29AQI
14th January 2025
27AQI
27AQI
15th January 2025
31AQI
31AQI
16th January 2025
25AQI
25AQI
17th January 2025
30AQI
30AQI
18th January 2025
27AQI
27AQI
19th January 2025
32AQI
32AQI
20th January 2025
29AQI
29AQI
21st January 2025
32AQI
32AQI
22nd January 2025
32AQI
32AQI
23rd January 2025
33AQI
33AQI
24th January 2025
36AQI
36AQI
25th January 2025
33AQI
33AQI
26th January 2025
32AQI
32AQI
27th January 2025
26AQI
26AQI
28th January 2025
31AQI
31AQI
29th January 2025
27AQI
27AQI
30th January 2025
27AQI
27AQI
31st January 2025
28AQI
28AQI
1st February 2025
28AQI
28AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
26AQI
26AQI
4th February 2025
30AQI
30AQI
5th February 2025
27AQI
27AQI
6th February 2025
27AQI
27AQI
7th February 2025
26AQI
26AQI
8th February 2025
29AQI
29AQI
9th February 2025
28AQI
28AQI
10th February 2025
26AQI
26AQI
11th February 2025
30AQI
30AQI
12th February 2025
29AQI
29AQI
13th February 2025
31AQI
31AQI
14th February 2025
28AQI
28AQI
15th February 2025
29AQI
29AQI
16th February 2025
33AQI
33AQI
17th February 2025
33AQI
33AQI
18th February 2025
31AQI
31AQI
19th February 2025
29AQI
29AQI
20th February 2025
29AQI
29AQI
21st February 2025
29AQI
29AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
30AQI
30AQI
24th February 2025
32AQI
32AQI
25th February 2025
30AQI
30AQI
26th February 2025
34AQI
34AQI
27th February 2025
39AQI
39AQI
28th February 2025
42AQI
42AQI
1st March 2025
44AQI
44AQI
2nd March 2025
50AQI
50AQI
3rd March 2025
37AQI
37AQI
4th March 2025
35AQI
35AQI
5th March 2025
26AQI
26AQI
6th March 2025
31AQI
31AQI
7th March 2025
29AQI
29AQI
8th March 2025
32AQI
32AQI
9th March 2025
32AQI
32AQI
10th March 2025
32AQI
32AQI
11th March 2025
33AQI
33AQI
12th March 2025
33AQI
33AQI
13th March 2025
34AQI
34AQI
14th March 2025
29AQI
29AQI
15th March 2025
23AQI
23AQI
16th March 2025
20AQI
20AQI
17th March 2025
18AQI
18AQI
18th March 2025
17AQI
17AQI
19th March 2025
16AQI
16AQI
20th March 2025
17AQI
17AQI
21st March 2025
25AQI
25AQI
22nd March 2025
30AQI
30AQI
23rd March 2025
33AQI
33AQI
24th March 2025
31AQI
31AQI
25th March 2025
55AQI
55AQI
26th March 2025
67AQI
67AQI
27th March 2025
62AQI
62AQI
28th March 2025
41AQI
41AQI
29th March 2025
33AQI
33AQI
30th March 2025
41AQI
41AQI
31st March 2025
32AQI
32AQI
1st April 2025
25AQI
25AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
18AQI
18AQI
4th April 2025
18AQI
18AQI
5th April 2025
19AQI
19AQI
6th April 2025
15AQI
15AQI
7th April 2025
17AQI
17AQI
8th April 2025
18AQI
18AQI
9th April 2025
18AQI
18AQI
10th April 2025
25AQI
25AQI
11th April 2025
23AQI
23AQI
12th April 2025
23AQI
23AQI
13th April 2025
20AQI
20AQI
14th April 2025
24AQI
24AQI
15th April 2025
21AQI
21AQI
16th April 2025
19AQI
19AQI
17th April 2025
26AQI
26AQI
18th April 2025
30AQI
30AQI
19th April 2025
37AQI
37AQI
20th April 2025
29AQI
29AQI
21st April 2025
28AQI
28AQI
22nd April 2025
27AQI
27AQI
23rd April 2025
19AQI
19AQI
24th April 2025
23AQI
23AQI
25th April 2025
22AQI
22AQI
26th April 2025
22AQI
22AQI
27th April 2025
26AQI
26AQI
28th April 2025
23AQI
23AQI
29th April 2025
19AQI
19AQI
30th April 2025
22AQI
22AQI
1st May 2025
21AQI
21AQI
2nd May 2025
19AQI
19AQI
3rd May 2025
19AQI
19AQI
4th May 2025
24AQI
24AQI
5th May 2025
21AQI
21AQI
6th May 2025
20AQI
20AQI
7th May 2025
21AQI
21AQI
8th May 2025
20AQI
20AQI
9th May 2025
20AQI
20AQI
10th May 2025
17AQI
17AQI
11th May 2025
17AQI
17AQI
12th May 2025
16AQI
16AQI
13th May 2025
17AQI
17AQI
14th May 2025
17AQI
17AQI
15th May 2025
20AQI
20AQI
16th May 2025
21AQI
21AQI
17th May 2025
19AQI
19AQI
18th May 2025
25AQI
25AQI
19th May 2025
22AQI
22AQI
20th May 2025
39AQI
39AQI
21st May 2025
32AQI
32AQI
22nd May 2025
27AQI
27AQI
23rd May 2025
23AQI
23AQI
24th May 2025
23AQI
23AQI
25th May 2025
18AQI
18AQI
26th May 2025
17AQI
17AQI
27th May 2025
16AQI
16AQI
28th May 2025
17AQI
17AQI
29th May 2025
21AQI
21AQI
30th May 2025
19AQI
19AQI
31st May 2025
14AQI
14AQI
1st June 2025
15AQI
15AQI
2nd June 2025
17AQI
17AQI
3rd June 2025
17AQI
17AQI
4th June 2025
16AQI
16AQI
5th June 2025
20AQI
20AQI
6th June 2025
23AQI
23AQI
7th June 2025
23AQI
23AQI
8th June 2025
26AQI
26AQI
9th June 2025
22AQI
22AQI
10th June 2025
22AQI
22AQI
11th June 2025
23AQI
23AQI
12th June 2025
26AQI
26AQI
13th June 2025
24AQI
24AQI
14th June 2025
21AQI
21AQI
15th June 2025
23AQI
23AQI
16th June 2025
22AQI
22AQI
17th June 2025
31AQI
31AQI
18th June 2025
25AQI
25AQI
19th June 2025
25AQI
25AQI
20th June 2025
23AQI
23AQI
21st June 2025
20AQI
20AQI
22nd June 2025
10AQI
10AQI
23rd June 2025
14AQI
14AQI
24th June 2025
17AQI
17AQI
25th June 2025
16AQI
16AQI
26th June 2025
15AQI
15AQI
27th June 2025
19AQI
19AQI
28th June 2025
17AQI
17AQI
29th June 2025
22AQI
22AQI
30th June 2025
38AQI
38AQI
1st July 2025
40AQI
40AQI
2nd July 2025
46AQI
46AQI
3rd July 2025
44AQI
44AQI
4th July 2025
47AQI
47AQI
5th July 2025
53AQI
53AQI
6th July 2025
69AQI
69AQI
7th July 2025
83AQI
83AQI
8th July 2025
80AQI
80AQI
9th July 2025
81AQI
81AQI
10th July 2025
59AQI
59AQI
11th July 2025
47AQI
47AQI
12th July 2025
50AQI
50AQI
13th July 2025
48AQI
48AQI
14th July 2025
39AQI
39AQI
15th July 2025
39AQI
39AQI
16th July 2025
39AQI
39AQI
17th July 2025
45AQI
45AQI
18th July 2025
38AQI
38AQI
19th July 2025
35AQI
35AQI
20th July 2025
34AQI
34AQI
21st July 2025
36AQI
36AQI
22nd July 2025
38AQI
38AQI
23rd July 2025
40AQI
40AQI
24th July 2025
43AQI
43AQI
25th July 2025
39AQI
39AQI
26th July 2025
39AQI
39AQI
27th July 2025
35AQI
35AQI
28th July 2025
42AQI
42AQI
29th July 2025
37AQI
37AQI
30th July 2025
32AQI
32AQI
31st July 2025
31AQI
31AQI
1st August 2025
33AQI
33AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
41AQI
41AQI
28AQI
30AQI
33AQI
23AQI
21AQI
21AQI
46AQI
38AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202529AQI
31
28
28
3
30
31
30
25
6
3
206
9
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
May21AQI
202435AQI
23
8
26
3
21
10
22
8
29
2
30
29
2
27
4
27
1
2
31
28
2
31
324
40
2
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
December26AQI
202342AQI
21
10
18
10
22
9
16
14
24
7
21
9
20
11
28
3
29
1
31
18
11
24
7
272
92
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
August31AQI
202234AQI
31
19
2
30
1
28
2
27
4
20
10
21
1
1
28
28
3
23
7
22
9
278
39
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
September21AQI
202123AQI
30
1
28
29
2
30
30
1
29
1
31
27
4
30
30
1
30
31
355
10
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
February15AQI
202019AQI
13
21
18
29
1
31
31
19
31
30
31
254
1
Highest AQI recorded in
August25AQI
Lowest AQI recorded in
April13AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
42AQILeast Polluted Year Recorded
2020(Avg.)
19AQIAyase's annual 2025 AQI (29) shows an average percentage change of 3.8% (worsened AQI) compared to previous years: 2020 (19), 2021 (23), 2022 (34), 2023 (42), 2024 (35).
