Yachiyo, 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+
August Air Quality Analysis
Yachiyo, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
66AQILowest AQI recorded on
8th Aug 2021
13AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Yachiyo, Chiba, Japan
AQI
Day
Night
.
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
10AM5th Aug
65AQI
Avg. Lowest Time
11PM5th Aug
42AQI
In the last 24 hours,
Yachiyo's AQI reached its highest point of 65 at 10 AM during the Night, while the lowest point, 42, was recorded at 11 PM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Yachiyo, Chiba, Japan
JulAug
07th - 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 - 05th05th - 06th06th
Day
Night
7th Jul 2025504 AMAQI
7th Jul 2025555 AMAQI
7th Jul 2025566 AMAQI
7th Jul 2025557 AMAQI
7th Jul 2025568 AMAQI
7th Jul 2025979 AMAQI
7th Jul 202511410 AMAQI
7th Jul 202511311 AMAQI
7th Jul 202510312 PMAQI
7th Jul 2025921 PMAQI
7th Jul 2025902 PMAQI
7th Jul 2025893 PMAQI
7th Jul 2025924 PMAQI
7th Jul 2025875 PMAQI
7th Jul 2025906 PMAQI
7th Jul 2025937 PMAQI
7th Jul 2025908 PMAQI
7th Jul 2025769 PMAQI
7th Jul 20257510 PMAQI
7th Jul 20257611 PMAQI
8th Jul 20257112 AMAQI
8th Jul 2025611 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025563 AMAQI
29°C27/34°C
8th Jul 2025574 AMAQI
8th Jul 2025635 AMAQI
8th Jul 2025636 AMAQI
8th Jul 2025637 AMAQI
8th Jul 2025638 AMAQI
8th Jul 2025979 AMAQI
8th Jul 202510710 AMAQI
8th Jul 202510411 AMAQI
8th Jul 20259612 PMAQI
8th Jul 2025881 PMAQI
8th Jul 2025862 PMAQI
8th Jul 2025873 PMAQI
8th Jul 2025904 PMAQI
8th Jul 2025885 PMAQI
8th Jul 2025866 PMAQI
8th Jul 2025867 PMAQI
8th Jul 2025858 PMAQI
8th Jul 2025759 PMAQI
8th Jul 20257910 PMAQI
8th Jul 20257911 PMAQI
9th Jul 20257712 AMAQI
9th Jul 2025641 AMAQI
9th Jul 2025632 AMAQI
9th Jul 2025623 AMAQI
29°C26/32°C
9th Jul 2025644 AMAQI
9th Jul 2025705 AMAQI
9th Jul 2025706 AMAQI
9th Jul 2025697 AMAQI
9th Jul 2025698 AMAQI
9th Jul 2025809 AMAQI
9th Jul 20259110 AMAQI
9th Jul 20259911 AMAQI
9th Jul 202510112 PMAQI
9th Jul 2025991 PMAQI
9th Jul 20251032 PMAQI
9th Jul 20251133 PMAQI
9th Jul 20251124 PMAQI
9th Jul 2025775 PMAQI
9th Jul 2025586 PMAQI
9th Jul 2025497 PMAQI
9th Jul 2025488 PMAQI
9th Jul 2025579 PMAQI
9th Jul 20255810 PMAQI
9th Jul 20255711 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025671 AMAQI
10th Jul 2025682 AMAQI
10th Jul 2025683 AMAQI
28°C26/32°C
10th Jul 2025704 AMAQI
10th Jul 2025755 AMAQI
10th Jul 2025746 AMAQI
10th Jul 2025757 AMAQI
10th Jul 2025758 AMAQI
10th Jul 2025389 AMAQI
10th Jul 20253110 AMAQI
10th Jul 20253611 AMAQI
10th Jul 20254012 PMAQI
10th Jul 2025391 PMAQI
10th Jul 2025382 PMAQI
10th Jul 2025463 PMAQI
10th Jul 2025454 PMAQI
10th Jul 2025485 PMAQI
10th Jul 2025526 PMAQI
10th Jul 2025457 PMAQI
10th Jul 2025498 PMAQI
10th Jul 2025599 PMAQI
10th Jul 20255910 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20256012 AMAQI
11th Jul 2025661 AMAQI
11th Jul 2025692 AMAQI
11th Jul 2025693 AMAQI
27°C22/32°C
11th Jul 2025684 AMAQI
11th Jul 2025645 AMAQI
11th Jul 2025646 AMAQI
11th Jul 2025647 AMAQI
11th Jul 2025648 AMAQI
11th Jul 2025299 AMAQI
11th Jul 20251710 AMAQI
11th Jul 20251911 AMAQI
11th Jul 20252012 PMAQI
11th Jul 2025331 PMAQI
11th Jul 2025342 PMAQI
11th Jul 2025333 PMAQI
11th Jul 2025324 PMAQI
11th Jul 2025305 PMAQI
11th Jul 2025336 PMAQI
11th Jul 2025347 PMAQI
11th Jul 2025418 PMAQI
11th Jul 2025579 PMAQI
11th Jul 20255710 PMAQI
11th Jul 20255711 PMAQI
12th Jul 20255812 AMAQI
12th Jul 2025641 AMAQI
12th Jul 2025652 AMAQI
12th Jul 2025653 AMAQI
23°C22/26°C
12th Jul 2025634 AMAQI
12th Jul 2025605 AMAQI
12th Jul 2025606 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025608 AMAQI
12th Jul 2025459 AMAQI
12th Jul 20254110 AMAQI
12th Jul 20254111 AMAQI
12th Jul 20254012 PMAQI
12th Jul 2025451 PMAQI
12th Jul 2025442 PMAQI
12th Jul 2025433 PMAQI
12th Jul 2025334 PMAQI
12th Jul 2025375 PMAQI
12th Jul 2025346 PMAQI
12th Jul 2025347 PMAQI
12th Jul 2025388 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025601 AMAQI
13th Jul 2025612 AMAQI
13th Jul 2025613 AMAQI
24°C21/28°C
13th Jul 2025614 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025597 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025459 AMAQI
13th Jul 20253510 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254512 PMAQI
13th Jul 2025451 PMAQI
13th Jul 2025422 PMAQI
13th Jul 2025423 PMAQI
13th Jul 2025394 PMAQI
13th Jul 2025345 PMAQI
13th Jul 2025326 PMAQI
13th Jul 2025307 PMAQI
13th Jul 2025348 PMAQI
13th Jul 2025509 PMAQI
13th Jul 20255110 PMAQI
13th Jul 20254911 PMAQI
14th Jul 20254812 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025592 AMAQI
14th Jul 2025593 AMAQI
26°C23/29°C
14th Jul 2025584 AMAQI
14th Jul 2025575 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025289 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025231 PMAQI
14th Jul 2025222 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025274 PMAQI
14th Jul 2025245 PMAQI
14th Jul 2025286 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025318 PMAQI
14th Jul 2025479 PMAQI
14th Jul 20254710 PMAQI
14th Jul 20254811 PMAQI
15th Jul 20254812 AMAQI
15th Jul 2025521 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025553 AMAQI
26°C24/29°C
15th Jul 2025554 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025536 AMAQI
15th Jul 2025537 AMAQI
15th Jul 2025538 AMAQI
15th Jul 2025319 AMAQI
15th Jul 20252310 AMAQI
15th Jul 20252011 AMAQI
15th Jul 20252012 PMAQI
15th Jul 2025241 PMAQI
15th Jul 2025232 PMAQI
15th Jul 2025243 PMAQI
15th Jul 2025254 PMAQI
15th Jul 2025285 PMAQI
15th Jul 2025326 PMAQI
15th Jul 2025317 PMAQI
15th Jul 2025288 PMAQI
15th Jul 2025419 PMAQI
15th Jul 20254110 PMAQI
15th Jul 20254211 PMAQI
16th Jul 20254812 AMAQI
16th Jul 2025531 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025533 AMAQI
26°C25/28°C
16th Jul 2025534 AMAQI
16th Jul 2025515 AMAQI
16th Jul 2025506 AMAQI
16th Jul 2025517 AMAQI
16th Jul 2025518 AMAQI
16th Jul 2025469 AMAQI
16th Jul 20253610 AMAQI
16th Jul 20252411 AMAQI
16th Jul 20252012 PMAQI
16th Jul 2025221 PMAQI
16th Jul 2025252 PMAQI
16th Jul 2025253 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025265 PMAQI
16th Jul 2025266 PMAQI
16th Jul 2025237 PMAQI
16th Jul 2025248 PMAQI
16th Jul 2025379 PMAQI
16th Jul 20253810 PMAQI
16th Jul 20254011 PMAQI
17th Jul 20254412 AMAQI
17th Jul 2025511 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
26°C25/28°C
17th Jul 2025514 AMAQI
17th Jul 2025485 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025487 AMAQI
17th Jul 2025488 AMAQI
17th Jul 2025359 AMAQI
17th Jul 20253510 AMAQI
17th Jul 20253711 AMAQI
17th Jul 20253912 PMAQI
17th Jul 2025401 PMAQI
17th Jul 2025382 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025374 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025287 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025409 PMAQI
17th Jul 20254210 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254112 AMAQI
18th Jul 2025491 AMAQI
18th Jul 2025502 AMAQI
18th Jul 2025503 AMAQI
27°C25/29°C
18th Jul 2025494 AMAQI
18th Jul 2025475 AMAQI
18th Jul 2025476 AMAQI
18th Jul 2025477 AMAQI
18th Jul 2025478 AMAQI
18th Jul 2025349 AMAQI
18th Jul 20253210 AMAQI
18th Jul 20253211 AMAQI
18th Jul 20253012 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025282 PMAQI
18th Jul 2025313 PMAQI
18th Jul 2025294 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025317 PMAQI
18th Jul 2025438 PMAQI
18th Jul 2025369 PMAQI
18th Jul 20253610 PMAQI
18th Jul 20253711 PMAQI
19th Jul 20253712 AMAQI
19th Jul 2025441 AMAQI
19th Jul 2025472 AMAQI
19th Jul 2025473 AMAQI
27°C25/29°C
19th Jul 2025464 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025446 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252410 AMAQI
19th Jul 20252811 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025222 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025166 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253410 PMAQI
19th Jul 20253111 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025411 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025443 AMAQI
27°C25/30°C
20th Jul 2025434 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025416 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252312 PMAQI
20th Jul 2025251 PMAQI
20th Jul 2025212 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025234 PMAQI
20th Jul 2025195 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253110 PMAQI
20th Jul 20253111 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025423 AMAQI
28°C26/30°C
21st Jul 2025404 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025386 AMAQI
21st Jul 2025377 AMAQI
21st Jul 2025378 AMAQI
21st Jul 2025339 AMAQI
21st Jul 20253210 AMAQI
21st Jul 20253411 AMAQI
21st Jul 20253512 PMAQI
21st Jul 2025391 PMAQI
21st Jul 2025422 PMAQI
21st Jul 2025403 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025255 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025237 PMAQI
21st Jul 2025288 PMAQI
21st Jul 2025329 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025383 AMAQI
28°C26/32°C
22nd Jul 2025384 AMAQI
22nd Jul 2025385 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025299 AMAQI
22nd Jul 20252710 AMAQI
22nd Jul 20253511 AMAQI
22nd Jul 20254212 PMAQI
22nd Jul 2025491 PMAQI
22nd Jul 2025492 PMAQI
22nd Jul 2025473 PMAQI
22nd Jul 2025434 PMAQI
22nd Jul 2025325 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025207 PMAQI
22nd Jul 2025208 PMAQI
22nd Jul 2025289 PMAQI
22nd Jul 20252810 PMAQI
22nd Jul 20252911 PMAQI
23rd Jul 20252812 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025383 AMAQI
28°C26/32°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 20253310 AMAQI
23rd Jul 20253911 AMAQI
23rd Jul 20255512 PMAQI
23rd Jul 2025591 PMAQI
23rd Jul 2025582 PMAQI
23rd Jul 2025503 PMAQI
23rd Jul 2025434 PMAQI
23rd Jul 2025385 PMAQI
23rd Jul 2025346 PMAQI
23rd Jul 2025317 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025289 PMAQI
23rd Jul 20253010 PMAQI
23rd Jul 20252911 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025361 AMAQI
24th Jul 2025372 AMAQI
24th Jul 2025373 AMAQI
28°C26/32°C
24th Jul 2025384 AMAQI
24th Jul 2025405 AMAQI
24th Jul 2025396 AMAQI
24th Jul 2025397 AMAQI
24th Jul 2025408 AMAQI
24th Jul 2025379 AMAQI
24th Jul 20253910 AMAQI
24th Jul 20254611 AMAQI
24th Jul 20255312 PMAQI
24th Jul 2025561 PMAQI
24th Jul 2025582 PMAQI
24th Jul 2025573 PMAQI
24th Jul 2025484 PMAQI
24th Jul 2025295 PMAQI
24th Jul 2025246 PMAQI
24th Jul 2025217 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025289 PMAQI
24th Jul 20253110 PMAQI
24th Jul 20253111 PMAQI
25th Jul 20253012 AMAQI
25th Jul 2025361 AMAQI
25th Jul 2025372 AMAQI
25th Jul 2025383 AMAQI
29°C26/33°C
25th Jul 2025384 AMAQI
25th Jul 2025405 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025408 AMAQI
25th Jul 2025359 AMAQI
25th Jul 20253910 AMAQI
25th Jul 20254711 AMAQI
25th Jul 20254612 PMAQI
25th Jul 2025441 PMAQI
25th Jul 2025372 PMAQI
25th Jul 2025303 PMAQI
25th Jul 2025264 PMAQI
25th Jul 2025215 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025208 PMAQI
25th Jul 2025269 PMAQI
25th Jul 20252710 PMAQI
25th Jul 20252711 PMAQI
26th Jul 20252912 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025372 AMAQI
26th Jul 2025383 AMAQI
29°C26/32°C
26th Jul 2025384 AMAQI
26th Jul 2025395 AMAQI
26th Jul 2025396 AMAQI
26th Jul 2025397 AMAQI
26th Jul 2025388 AMAQI
26th Jul 2025299 AMAQI
26th Jul 20253010 AMAQI
26th Jul 20253211 AMAQI
26th Jul 20253712 PMAQI
26th Jul 2025371 PMAQI
26th Jul 2025382 PMAQI
26th Jul 2025363 PMAQI
26th Jul 2025294 PMAQI
26th Jul 2025215 PMAQI
26th Jul 2025206 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025208 PMAQI
26th Jul 2025299 PMAQI
26th Jul 20253210 PMAQI
26th Jul 20253111 PMAQI
27th Jul 20253112 AMAQI
27th Jul 2025371 AMAQI
27th Jul 2025382 AMAQI
27th Jul 2025383 AMAQI
29°C27/32°C
27th Jul 2025374 AMAQI
27th Jul 2025375 AMAQI
27th Jul 2025366 AMAQI
27th Jul 2025367 AMAQI
27th Jul 2025378 AMAQI
27th Jul 2025299 AMAQI
27th Jul 20252410 AMAQI
27th Jul 20253111 AMAQI
27th Jul 20253112 PMAQI
27th Jul 2025291 PMAQI
27th Jul 2025292 PMAQI
27th Jul 2025303 PMAQI
27th Jul 2025264 PMAQI
27th Jul 2025235 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025197 PMAQI
27th Jul 2025188 PMAQI
27th Jul 2025259 PMAQI
27th Jul 20252710 PMAQI
27th Jul 20252711 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025331 AMAQI
28th Jul 2025372 AMAQI
28th Jul 2025373 AMAQI
28°C27/31°C
28th Jul 2025364 AMAQI
28th Jul 2025355 AMAQI
28th Jul 2025366 AMAQI
28th Jul 2025357 AMAQI
28th Jul 2025358 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20253310 AMAQI
28th Jul 20253811 AMAQI
28th Jul 20254612 PMAQI
28th Jul 2025571 PMAQI
28th Jul 2025582 PMAQI
28th Jul 2025583 PMAQI
28th Jul 2025524 PMAQI
28th Jul 2025385 PMAQI
28th Jul 2025316 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025278 PMAQI
28th Jul 2025289 PMAQI
28th Jul 20252610 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025351 AMAQI
29th Jul 2025342 AMAQI
29th Jul 2025353 AMAQI
29°C26/34°C
29th Jul 2025364 AMAQI
29th Jul 2025395 AMAQI
29th Jul 2025396 AMAQI
29th Jul 2025397 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025349 AMAQI
29th Jul 20253910 AMAQI
29th Jul 20254311 AMAQI
29th Jul 20254412 PMAQI
29th Jul 2025511 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025423 PMAQI
29th Jul 2025324 PMAQI
29th Jul 2025205 PMAQI
29th Jul 2025186 PMAQI
29th Jul 2025187 PMAQI
29th Jul 2025228 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252511 PMAQI
30th Jul 20252812 AMAQI
30th Jul 2025331 AMAQI
30th Jul 2025352 AMAQI
30th Jul 2025353 AMAQI
30°C25/36°C
30th Jul 2025364 AMAQI
30th Jul 2025375 AMAQI
30th Jul 2025376 AMAQI
30th Jul 2025377 AMAQI
30th Jul 2025378 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20252510 AMAQI
30th Jul 20252611 AMAQI
30th Jul 20252612 PMAQI
30th Jul 2025261 PMAQI
30th Jul 2025252 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025274 PMAQI
30th Jul 2025295 PMAQI
30th Jul 2025296 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025318 PMAQI
30th Jul 2025319 PMAQI
30th Jul 20253310 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253412 AMAQI
31st Jul 2025341 AMAQI
31st Jul 2025342 AMAQI
31st Jul 2025343 AMAQI
29°C25/34°C
31st Jul 2025334 AMAQI
31st Jul 2025335 AMAQI
31st Jul 2025336 AMAQI
31st Jul 2025337 AMAQI
31st Jul 2025338 AMAQI
31st Jul 2025339 AMAQI
31st Jul 20253310 AMAQI
31st Jul 20253311 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025331 PMAQI
31st Jul 2025262 PMAQI
31st Jul 2025233 PMAQI
31st Jul 2025264 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025226 PMAQI
31st Jul 2025217 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025332 AMAQI
1st Aug 2025343 AMAQI
28°C24/32°C
1st Aug 2025344 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025366 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025368 AMAQI
1st Aug 2025389 AMAQI
1st Aug 20252810 AMAQI
1st Aug 20254311 AMAQI
1st Aug 20254312 PMAQI
1st Aug 2025431 PMAQI
1st Aug 2025352 PMAQI
1st Aug 2025263 PMAQI
1st Aug 2025434 PMAQI
1st Aug 2025315 PMAQI
1st Aug 2025396 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025298 PMAQI
1st Aug 2025299 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025363 AMAQI
28°C25/31°C
2nd Aug 2025374 AMAQI
2nd Aug 2025375 AMAQI
2nd Aug 2025386 AMAQI
2nd Aug 2025377 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025339 AMAQI
2nd Aug 20253210 AMAQI
2nd Aug 20254011 AMAQI
2nd Aug 20253312 PMAQI
2nd Aug 2025441 PMAQI
2nd Aug 2025562 PMAQI
2nd Aug 2025583 PMAQI
2nd Aug 2025564 PMAQI
2nd Aug 2025515 PMAQI
2nd Aug 2025526 PMAQI
2nd Aug 2025547 PMAQI
2nd Aug 2025408 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20253610 PMAQI
2nd Aug 20254211 PMAQI
3rd Aug 20253312 AMAQI
3rd Aug 2025351 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025363 AMAQI
29°C26/33°C
3rd Aug 2025404 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025489 AMAQI
3rd Aug 20255410 AMAQI
3rd Aug 20255511 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025513 PMAQI
3rd Aug 2025494 PMAQI
3rd Aug 2025515 PMAQI
3rd Aug 2025546 PMAQI
3rd Aug 2025457 PMAQI
3rd Aug 2025468 PMAQI
3rd Aug 2025409 PMAQI
3rd Aug 20254510 PMAQI
3rd Aug 20253911 PMAQI
4th Aug 20253812 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025403 AMAQI
30°C27/35°C
4th Aug 2025424 AMAQI
4th Aug 2025435 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025427 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025639 AMAQI
4th Aug 20257010 AMAQI
4th Aug 20258111 AMAQI
4th Aug 20258412 PMAQI
4th Aug 2025911 PMAQI
4th Aug 2025972 PMAQI
4th Aug 2025873 PMAQI
4th Aug 2025914 PMAQI
4th Aug 2025955 PMAQI
4th Aug 2025866 PMAQI
4th Aug 2025757 PMAQI
4th Aug 2025668 PMAQI
4th Aug 2025579 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20254611 PMAQI
5th Aug 20254912 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025422 AMAQI
5th Aug 2025403 AMAQI
29°C28/33°C
5th Aug 2025514 AMAQI
5th Aug 2025545 AMAQI
5th Aug 2025536 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025589 AMAQI
5th Aug 20256510 AMAQI
5th Aug 20256011 AMAQI
5th Aug 20256012 PMAQI
5th Aug 2025551 PMAQI
5th Aug 2025572 PMAQI
5th Aug 2025573 PMAQI
5th Aug 2025614 PMAQI
5th Aug 2025515 PMAQI
5th Aug 2025486 PMAQI
5th Aug 2025457 PMAQI
5th Aug 2025478 PMAQI
5th Aug 2025479 PMAQI
5th Aug 20254710 PMAQI
5th Aug 20254211 PMAQI
6th Aug 20254412 AMAQI
6th Aug 2025481 AMAQI
6th Aug 2025502 AMAQI
6th Aug 2025503 AMAQI
--°C/°C
6th Aug 2025524 AMAQI
4 AM6th Aug 2025525 AMAQI
6th Aug 2025526 AMAQI
11 AM
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
47AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 PM
37AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 47), while the lowest AQI was between 6 PM to 6 PM (Avg. 37).
Night time
Avg. Highest Time
1 AM - 3 AM
46AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM - 8 PM
36AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 3 AM (Avg. 46), while the lowest AQI was between 7 PM to 8 PM (Avg. 36).
2025 Days Vs Air Quality
Yachiyo, Chiba, Japan
2025
90%
195
10%
21
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
195 DaysModerate
21 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 217 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
Yachiyo, 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.
1st January 2025
34AQI
34AQI
2nd January 2025
33AQI
33AQI
3rd January 2025
27AQI
27AQI
4th January 2025
30AQI
30AQI
5th January 2025
38AQI
38AQI
6th January 2025
53AQI
53AQI
7th January 2025
32AQI
32AQI
8th January 2025
36AQI
36AQI
9th January 2025
31AQI
31AQI
10th January 2025
30AQI
30AQI
11th January 2025
32AQI
32AQI
12th January 2025
35AQI
35AQI
13th January 2025
31AQI
31AQI
14th January 2025
43AQI
43AQI
15th January 2025
36AQI
36AQI
16th January 2025
35AQI
35AQI
17th January 2025
29AQI
29AQI
18th January 2025
36AQI
36AQI
19th January 2025
56AQI
56AQI
20th January 2025
42AQI
42AQI
21st January 2025
45AQI
45AQI
22nd January 2025
42AQI
42AQI
23rd January 2025
54AQI
54AQI
24th January 2025
47AQI
47AQI
25th January 2025
42AQI
42AQI
26th January 2025
37AQI
37AQI
27th January 2025
38AQI
38AQI
28th January 2025
39AQI
39AQI
29th January 2025
33AQI
33AQI
30th January 2025
34AQI
34AQI
31st January 2025
30AQI
30AQI
1st February 2025
41AQI
41AQI
2nd February 2025
34AQI
34AQI
3rd February 2025
41AQI
41AQI
4th February 2025
32AQI
32AQI
5th February 2025
34AQI
34AQI
6th February 2025
29AQI
29AQI
7th February 2025
31AQI
31AQI
8th February 2025
30AQI
30AQI
9th February 2025
30AQI
30AQI
10th February 2025
30AQI
30AQI
11th February 2025
33AQI
33AQI
12th February 2025
34AQI
34AQI
13th February 2025
47AQI
47AQI
14th February 2025
30AQI
30AQI
15th February 2025
48AQI
48AQI
16th February 2025
39AQI
39AQI
17th February 2025
41AQI
41AQI
18th February 2025
33AQI
33AQI
19th February 2025
33AQI
33AQI
20th February 2025
30AQI
30AQI
21st February 2025
31AQI
31AQI
22nd February 2025
33AQI
33AQI
23rd February 2025
33AQI
33AQI
24th February 2025
35AQI
35AQI
25th February 2025
36AQI
36AQI
26th February 2025
38AQI
38AQI
27th February 2025
41AQI
41AQI
28th February 2025
56AQI
56AQI
1st March 2025
49AQI
49AQI
2nd March 2025
63AQI
63AQI
3rd March 2025
40AQI
40AQI
4th March 2025
40AQI
40AQI
5th March 2025
26AQI
26AQI
6th March 2025
33AQI
33AQI
7th March 2025
31AQI
31AQI
8th March 2025
34AQI
34AQI
9th March 2025
34AQI
34AQI
10th March 2025
36AQI
36AQI
11th March 2025
42AQI
42AQI
12th March 2025
45AQI
45AQI
13th March 2025
40AQI
40AQI
14th March 2025
41AQI
41AQI
15th March 2025
34AQI
34AQI
16th March 2025
26AQI
26AQI
17th March 2025
20AQI
20AQI
18th March 2025
23AQI
23AQI
19th March 2025
18AQI
18AQI
20th March 2025
24AQI
24AQI
21st March 2025
43AQI
43AQI
22nd March 2025
49AQI
49AQI
23rd March 2025
55AQI
55AQI
24th March 2025
52AQI
52AQI
25th March 2025
66AQI
66AQI
26th March 2025
79AQI
79AQI
27th March 2025
70AQI
70AQI
28th March 2025
47AQI
47AQI
29th March 2025
38AQI
38AQI
30th March 2025
43AQI
43AQI
31st March 2025
33AQI
33AQI
1st April 2025
29AQI
29AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
20AQI
20AQI
4th April 2025
22AQI
22AQI
5th April 2025
24AQI
24AQI
6th April 2025
24AQI
24AQI
7th April 2025
29AQI
29AQI
8th April 2025
36AQI
36AQI
9th April 2025
26AQI
26AQI
10th April 2025
46AQI
46AQI
11th April 2025
39AQI
39AQI
12th April 2025
38AQI
38AQI
13th April 2025
28AQI
28AQI
14th April 2025
39AQI
39AQI
15th April 2025
29AQI
29AQI
16th April 2025
32AQI
32AQI
17th April 2025
46AQI
46AQI
18th April 2025
51AQI
51AQI
19th April 2025
61AQI
61AQI
20th April 2025
50AQI
50AQI
21st April 2025
43AQI
43AQI
22nd April 2025
44AQI
44AQI
23rd April 2025
29AQI
29AQI
24th April 2025
38AQI
38AQI
25th April 2025
36AQI
36AQI
26th April 2025
44AQI
44AQI
27th April 2025
47AQI
47AQI
28th April 2025
42AQI
42AQI
29th April 2025
34AQI
34AQI
30th April 2025
42AQI
42AQI
1st May 2025
37AQI
37AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
30AQI
30AQI
4th May 2025
36AQI
36AQI
5th May 2025
33AQI
33AQI
6th May 2025
26AQI
26AQI
7th May 2025
23AQI
23AQI
8th May 2025
25AQI
25AQI
9th May 2025
28AQI
28AQI
10th May 2025
23AQI
23AQI
11th May 2025
28AQI
28AQI
12th May 2025
24AQI
24AQI
13th May 2025
34AQI
34AQI
14th May 2025
33AQI
33AQI
15th May 2025
37AQI
37AQI
16th May 2025
40AQI
40AQI
17th May 2025
28AQI
28AQI
18th May 2025
45AQI
45AQI
19th May 2025
39AQI
39AQI
20th May 2025
61AQI
61AQI
21st May 2025
42AQI
42AQI
22nd May 2025
43AQI
43AQI
23rd May 2025
38AQI
38AQI
24th May 2025
37AQI
37AQI
25th May 2025
29AQI
29AQI
26th May 2025
26AQI
26AQI
27th May 2025
24AQI
24AQI
28th May 2025
23AQI
23AQI
29th May 2025
27AQI
27AQI
30th May 2025
23AQI
23AQI
31st May 2025
16AQI
16AQI
1st June 2025
20AQI
20AQI
2nd June 2025
27AQI
27AQI
3rd June 2025
29AQI
29AQI
4th June 2025
32AQI
32AQI
5th June 2025
38AQI
38AQI
6th June 2025
45AQI
45AQI
7th June 2025
46AQI
46AQI
8th June 2025
54AQI
54AQI
9th June 2025
41AQI
41AQI
10th June 2025
35AQI
35AQI
11th June 2025
29AQI
29AQI
12th June 2025
37AQI
37AQI
13th June 2025
34AQI
34AQI
14th June 2025
32AQI
32AQI
15th June 2025
40AQI
40AQI
16th June 2025
39AQI
39AQI
17th June 2025
48AQI
48AQI
18th June 2025
42AQI
42AQI
19th June 2025
39AQI
39AQI
20th June 2025
34AQI
34AQI
21st June 2025
31AQI
31AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
24AQI
24AQI
24th June 2025
23AQI
23AQI
25th June 2025
20AQI
20AQI
26th June 2025
22AQI
22AQI
27th June 2025
32AQI
32AQI
28th June 2025
30AQI
30AQI
29th June 2025
34AQI
34AQI
30th June 2025
39AQI
39AQI
1st July 2025
38AQI
38AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
40AQI
40AQI
4th July 2025
44AQI
44AQI
5th July 2025
52AQI
52AQI
6th July 2025
69AQI
69AQI
7th July 2025
76AQI
76AQI
8th July 2025
78AQI
78AQI
9th July 2025
72AQI
72AQI
10th July 2025
56AQI
56AQI
11th July 2025
48AQI
48AQI
12th July 2025
50AQI
50AQI
13th July 2025
48AQI
48AQI
14th July 2025
40AQI
40AQI
15th July 2025
39AQI
39AQI
16th July 2025
38AQI
38AQI
17th July 2025
41AQI
41AQI
18th July 2025
38AQI
38AQI
19th July 2025
33AQI
33AQI
20th July 2025
32AQI
32AQI
21st July 2025
34AQI
34AQI
22nd July 2025
34AQI
34AQI
23rd July 2025
37AQI
37AQI
24th July 2025
37AQI
37AQI
25th July 2025
33AQI
33AQI
26th July 2025
32AQI
32AQI
27th July 2025
30AQI
30AQI
28th July 2025
36AQI
36AQI
29th July 2025
33AQI
33AQI
30th July 2025
31AQI
31AQI
31st July 2025
30AQI
30AQI
1st August 2025
33AQI
33AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
44AQI
44AQI
4th August 2025
60AQI
60AQI
37AQI
36AQI
41AQI
36AQI
32AQI
34AQI
43AQI
45AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
28
3
27
1
25
6
28
2
30
1
29
1
25
6
3
1
195
21
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
May32AQI
202438AQI
23
8
25
4
25
6
23
7
28
3
28
2
17
14
30
1
25
5
29
2
27
3
30
1
310
56
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
August30AQI
202339AQI
22
9
19
9
27
4
22
8
29
2
23
7
25
6
30
1
30
30
1
21
8
23
8
301
63
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August27AQI
202239AQI
25
6
13
8
22
9
13
4
26
5
27
3
19
2
1
28
28
3
23
7
24
7
249
54
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
August25AQI
202138AQI
20
11
22
6
25
6
29
1
25
6
27
3
28
3
27
4
30
28
3
23
7
17
14
301
64
Highest AQI recorded in
December47AQI
Lowest AQI recorded in
July32AQI
202038AQI
11
2
19
2
18
22
8
31
20
11
18
1
28
3
18
12
17
14
202
53
Highest AQI recorded in
December47AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
39AQILeast Polluted Year Recorded
2025(Avg.)
37AQIYachiyo's annual 2025 AQI (37) shows an average percentage change of -3.3% (improved AQI) compared to previous years: 2020 (38), 2021 (38), 2022 (39), 2023 (39), 2024 (38).
