Chuo, 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
Chuo, Yashio, Saitama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
73AQILowest AQI recorded on
8th Aug 2021
12AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Chuo, Yashio, Saitama, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
2PM4th Aug
90AQI
Avg. Lowest Time
3AM5th Aug
40AQI
In the last 24 hours,
Chuo's AQI reached its highest point of 90 at 2 PM during the Night, while the lowest point, 40, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chuo, Yashio, Saitama, Japan
JulAug
06th - 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 - 05th05th
Day
Night
6th Jul 2025434 AMAQI
6th Jul 2025455 AMAQI
6th Jul 2025456 AMAQI
6th Jul 2025457 AMAQI
6th Jul 2025468 AMAQI
6th Jul 2025579 AMAQI
6th Jul 20257210 AMAQI
6th Jul 20257811 AMAQI
6th Jul 20257512 PMAQI
6th Jul 2025761 PMAQI
6th Jul 2025752 PMAQI
6th Jul 2025763 PMAQI
6th Jul 2025804 PMAQI
6th Jul 2025845 PMAQI
6th Jul 2025906 PMAQI
6th Jul 2025967 PMAQI
6th Jul 2025898 PMAQI
6th Jul 2025759 PMAQI
6th Jul 20257310 PMAQI
6th Jul 20257211 PMAQI
7th Jul 20257212 AMAQI
7th Jul 2025661 AMAQI
7th Jul 2025482 AMAQI
7th Jul 2025483 AMAQI
31°C28/36°C
7th Jul 2025514 AMAQI
7th Jul 2025545 AMAQI
7th Jul 2025546 AMAQI
7th Jul 2025547 AMAQI
7th Jul 2025548 AMAQI
7th Jul 20251069 AMAQI
7th Jul 202511510 AMAQI
7th Jul 202510611 AMAQI
7th Jul 202510312 PMAQI
7th Jul 2025941 PMAQI
7th Jul 2025902 PMAQI
7th Jul 2025903 PMAQI
7th Jul 2025934 PMAQI
7th Jul 2025955 PMAQI
7th Jul 20251006 PMAQI
7th Jul 20251127 PMAQI
7th Jul 20251008 PMAQI
7th Jul 2025789 PMAQI
7th Jul 20257610 PMAQI
7th Jul 20257811 PMAQI
8th Jul 20257812 AMAQI
8th Jul 2025671 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025563 AMAQI
31°C28/35°C
8th Jul 2025604 AMAQI
8th Jul 2025655 AMAQI
8th Jul 2025656 AMAQI
8th Jul 2025657 AMAQI
8th Jul 2025658 AMAQI
8th Jul 20251099 AMAQI
8th Jul 202511310 AMAQI
8th Jul 202510811 AMAQI
8th Jul 20259412 PMAQI
8th Jul 2025871 PMAQI
8th Jul 2025812 PMAQI
8th Jul 2025763 PMAQI
8th Jul 2025814 PMAQI
8th Jul 2025815 PMAQI
8th Jul 2025816 PMAQI
8th Jul 2025807 PMAQI
8th Jul 2025838 PMAQI
8th Jul 2025769 PMAQI
8th Jul 20258010 PMAQI
8th Jul 20258211 PMAQI
9th Jul 20258412 AMAQI
9th Jul 2025791 AMAQI
9th Jul 2025642 AMAQI
9th Jul 2025643 AMAQI
31°C28/35°C
9th Jul 2025674 AMAQI
9th Jul 2025715 AMAQI
9th Jul 2025716 AMAQI
9th Jul 2025727 AMAQI
9th Jul 2025718 AMAQI
9th Jul 20251029 AMAQI
9th Jul 202511410 AMAQI
9th Jul 202510611 AMAQI
9th Jul 202510512 PMAQI
9th Jul 20251061 PMAQI
9th Jul 2025992 PMAQI
9th Jul 20251033 PMAQI
9th Jul 20251204 PMAQI
9th Jul 20251155 PMAQI
9th Jul 2025836 PMAQI
9th Jul 2025657 PMAQI
9th Jul 2025598 PMAQI
9th Jul 2025589 PMAQI
9th Jul 20256010 PMAQI
9th Jul 20255811 PMAQI
10th Jul 20255812 AMAQI
10th Jul 2025631 AMAQI
10th Jul 2025712 AMAQI
10th Jul 2025713 AMAQI
31°C28/35°C
10th Jul 2025754 AMAQI
10th Jul 2025785 AMAQI
10th Jul 2025786 AMAQI
10th Jul 2025787 AMAQI
10th Jul 2025788 AMAQI
10th Jul 2025469 AMAQI
10th Jul 20255110 AMAQI
10th Jul 20256211 AMAQI
10th Jul 20255912 PMAQI
10th Jul 2025541 PMAQI
10th Jul 2025502 PMAQI
10th Jul 2025483 PMAQI
10th Jul 2025494 PMAQI
10th Jul 2025525 PMAQI
10th Jul 2025506 PMAQI
10th Jul 2025477 PMAQI
10th Jul 2025488 PMAQI
10th Jul 2025589 PMAQI
10th Jul 20255710 PMAQI
10th Jul 20255711 PMAQI
11th Jul 20255812 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025702 AMAQI
11th Jul 2025703 AMAQI
29°C23/35°C
11th Jul 2025704 AMAQI
11th Jul 2025685 AMAQI
11th Jul 2025686 AMAQI
11th Jul 2025687 AMAQI
11th Jul 2025688 AMAQI
11th Jul 2025299 AMAQI
11th Jul 20252210 AMAQI
11th Jul 20251911 AMAQI
11th Jul 20252212 PMAQI
11th Jul 2025281 PMAQI
11th Jul 2025282 PMAQI
11th Jul 2025323 PMAQI
11th Jul 2025284 PMAQI
11th Jul 2025265 PMAQI
11th Jul 2025286 PMAQI
11th Jul 2025297 PMAQI
11th Jul 2025428 PMAQI
11th Jul 2025569 PMAQI
11th Jul 20255610 PMAQI
11th Jul 20255611 PMAQI
12th Jul 20255612 AMAQI
12th Jul 2025611 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI
24°C22/27°C
12th Jul 2025644 AMAQI
12th Jul 2025615 AMAQI
12th Jul 2025606 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025618 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20253510 AMAQI
12th Jul 20254211 AMAQI
12th Jul 20254012 PMAQI
12th Jul 2025411 PMAQI
12th Jul 2025382 PMAQI
12th Jul 2025413 PMAQI
12th Jul 2025404 PMAQI
12th Jul 2025355 PMAQI
12th Jul 2025386 PMAQI
12th Jul 2025357 PMAQI
12th Jul 2025418 PMAQI
12th Jul 2025529 PMAQI
12th Jul 20255210 PMAQI
12th Jul 20255311 PMAQI
13th Jul 20255212 AMAQI
13th Jul 2025571 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025623 AMAQI
25°C22/29°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025429 AMAQI
13th Jul 20253310 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254412 PMAQI
13th Jul 2025441 PMAQI
13th Jul 2025422 PMAQI
13th Jul 2025383 PMAQI
13th Jul 2025444 PMAQI
13th Jul 2025475 PMAQI
13th Jul 2025406 PMAQI
13th Jul 2025317 PMAQI
13th Jul 2025368 PMAQI
13th Jul 2025469 PMAQI
13th Jul 20254410 PMAQI
13th Jul 20254311 PMAQI
14th Jul 20254612 AMAQI
14th Jul 2025511 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025583 AMAQI
27°C24/31°C
14th Jul 2025574 AMAQI
14th Jul 2025565 AMAQI
14th Jul 2025566 AMAQI
14th Jul 2025567 AMAQI
14th Jul 2025568 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20252211 AMAQI
14th Jul 20252612 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025242 PMAQI
14th Jul 2025223 PMAQI
14th Jul 2025244 PMAQI
14th Jul 2025245 PMAQI
14th Jul 2025256 PMAQI
14th Jul 2025307 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025449 PMAQI
14th Jul 20254210 PMAQI
14th Jul 20254511 PMAQI
15th Jul 20254412 AMAQI
15th Jul 2025481 AMAQI
15th Jul 2025552 AMAQI
15th Jul 2025553 AMAQI
26°C25/29°C
15th Jul 2025544 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025526 AMAQI
15th Jul 2025527 AMAQI
15th Jul 2025528 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20252110 AMAQI
15th Jul 20252111 AMAQI
15th Jul 20252012 PMAQI
15th Jul 2025251 PMAQI
15th Jul 2025242 PMAQI
15th Jul 2025303 PMAQI
15th Jul 2025314 PMAQI
15th Jul 2025315 PMAQI
15th Jul 2025306 PMAQI
15th Jul 2025247 PMAQI
15th Jul 2025308 PMAQI
15th Jul 2025379 PMAQI
15th Jul 20253710 PMAQI
15th Jul 20254211 PMAQI
16th Jul 20254612 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 2025506 AMAQI
16th Jul 2025497 AMAQI
16th Jul 2025498 AMAQI
16th Jul 2025489 AMAQI
16th Jul 20254210 AMAQI
16th Jul 20253011 AMAQI
16th Jul 20252412 PMAQI
16th Jul 2025221 PMAQI
16th Jul 2025262 PMAQI
16th Jul 2025273 PMAQI
16th Jul 2025244 PMAQI
16th Jul 2025245 PMAQI
16th Jul 2025216 PMAQI
16th Jul 2025237 PMAQI
16th Jul 2025308 PMAQI
16th Jul 2025399 PMAQI
16th Jul 20253810 PMAQI
16th Jul 20253811 PMAQI
17th Jul 20254012 AMAQI
17th Jul 2025451 AMAQI
17th Jul 2025502 AMAQI
17th Jul 2025513 AMAQI
28°C26/30°C
17th Jul 2025494 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025477 AMAQI
17th Jul 2025478 AMAQI
17th Jul 2025339 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20253911 AMAQI
17th Jul 20253712 PMAQI
17th Jul 2025371 PMAQI
17th Jul 2025402 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025364 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025436 PMAQI
17th Jul 2025467 PMAQI
17th Jul 2025448 PMAQI
17th Jul 2025469 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254312 AMAQI
18th Jul 2025451 AMAQI
18th Jul 2025482 AMAQI
18th Jul 2025483 AMAQI
29°C27/32°C
18th Jul 2025464 AMAQI
18th Jul 2025455 AMAQI
18th Jul 2025446 AMAQI
18th Jul 2025457 AMAQI
18th Jul 2025448 AMAQI
18th Jul 2025369 AMAQI
18th Jul 20253310 AMAQI
18th Jul 20253411 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025271 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025234 PMAQI
18th Jul 2025255 PMAQI
18th Jul 2025216 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025288 PMAQI
18th Jul 2025379 PMAQI
18th Jul 20253810 PMAQI
18th Jul 20253511 PMAQI
19th Jul 20253512 AMAQI
19th Jul 2025401 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025463 AMAQI
28°C26/32°C
19th Jul 2025444 AMAQI
19th Jul 2025425 AMAQI
19th Jul 2025426 AMAQI
19th Jul 2025427 AMAQI
19th Jul 2025428 AMAQI
19th Jul 2025279 AMAQI
19th Jul 20252010 AMAQI
19th Jul 20252211 AMAQI
19th Jul 20252512 PMAQI
19th Jul 2025221 PMAQI
19th Jul 2025222 PMAQI
19th Jul 2025183 PMAQI
19th Jul 2025204 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025246 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253410 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253412 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025432 AMAQI
20th Jul 2025433 AMAQI
29°C26/33°C
20th Jul 2025414 AMAQI
20th Jul 2025395 AMAQI
20th Jul 2025396 AMAQI
20th Jul 2025397 AMAQI
20th Jul 2025398 AMAQI
20th Jul 2025289 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252311 AMAQI
20th Jul 20252412 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025225 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025267 PMAQI
20th Jul 2025328 PMAQI
20th Jul 2025369 PMAQI
20th Jul 20253410 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20253312 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 2025259 AMAQI
21st Jul 20252610 AMAQI
21st Jul 20253211 AMAQI
21st Jul 20254112 PMAQI
21st Jul 2025431 PMAQI
21st Jul 2025342 PMAQI
21st Jul 2025323 PMAQI
21st Jul 2025354 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025346 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025329 PMAQI
21st Jul 20253110 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253012 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 20252810 AMAQI
22nd Jul 20253811 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025401 PMAQI
22nd Jul 2025442 PMAQI
22nd Jul 2025433 PMAQI
22nd Jul 2025464 PMAQI
22nd Jul 2025425 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025288 PMAQI
22nd Jul 2025309 PMAQI
22nd Jul 20253410 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025372 AMAQI
23rd Jul 2025363 AMAQI
31°C28/35°C
23rd Jul 2025374 AMAQI
23rd Jul 2025385 AMAQI
23rd Jul 2025376 AMAQI
23rd Jul 2025377 AMAQI
23rd Jul 2025368 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20254710 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20254812 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025522 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025544 PMAQI
23rd Jul 2025485 PMAQI
23rd Jul 2025366 PMAQI
23rd Jul 2025327 PMAQI
23rd Jul 2025288 PMAQI
23rd Jul 2025309 PMAQI
23rd Jul 20253210 PMAQI
23rd Jul 20252911 PMAQI
24th Jul 20252912 AMAQI
24th Jul 2025321 AMAQI
24th Jul 2025362 AMAQI
24th Jul 2025373 AMAQI
31°C27/35°C
24th Jul 2025384 AMAQI
24th Jul 2025405 AMAQI
24th Jul 2025396 AMAQI
24th Jul 2025397 AMAQI
24th Jul 2025398 AMAQI
24th Jul 2025359 AMAQI
24th Jul 20254210 AMAQI
24th Jul 20255011 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025561 PMAQI
24th Jul 2025592 PMAQI
24th Jul 2025603 PMAQI
24th Jul 2025584 PMAQI
24th Jul 2025565 PMAQI
24th Jul 2025476 PMAQI
24th Jul 2025297 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025329 PMAQI
24th Jul 20253210 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20253412 AMAQI
25th Jul 2025341 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025373 AMAQI
31°C28/36°C
25th Jul 2025384 AMAQI
25th Jul 2025405 AMAQI
25th Jul 2025406 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025408 AMAQI
25th Jul 2025379 AMAQI
25th Jul 20254110 AMAQI
25th Jul 20255311 AMAQI
25th Jul 20255312 PMAQI
25th Jul 2025481 PMAQI
25th Jul 2025402 PMAQI
25th Jul 2025443 PMAQI
25th Jul 2025344 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025256 PMAQI
25th Jul 2025247 PMAQI
25th Jul 2025278 PMAQI
25th Jul 2025309 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20252911 PMAQI
26th Jul 20253112 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025373 AMAQI
31°C29/35°C
26th Jul 2025384 AMAQI
26th Jul 2025405 AMAQI
26th Jul 2025406 AMAQI
26th Jul 2025397 AMAQI
26th Jul 2025408 AMAQI
26th Jul 2025349 AMAQI
26th Jul 20254010 AMAQI
26th Jul 20254611 AMAQI
26th Jul 20254912 PMAQI
26th Jul 2025391 PMAQI
26th Jul 2025322 PMAQI
26th Jul 2025343 PMAQI
26th Jul 2025344 PMAQI
26th Jul 2025335 PMAQI
26th Jul 2025266 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025348 PMAQI
26th Jul 2025349 PMAQI
26th Jul 20253210 PMAQI
26th Jul 20253111 PMAQI
27th Jul 20253012 AMAQI
27th Jul 2025321 AMAQI
27th Jul 2025382 AMAQI
27th Jul 2025373 AMAQI
31°C29/35°C
27th Jul 2025384 AMAQI
27th Jul 2025385 AMAQI
27th Jul 2025366 AMAQI
27th Jul 2025387 AMAQI
27th Jul 2025378 AMAQI
27th Jul 2025329 AMAQI
27th Jul 20254010 AMAQI
27th Jul 20254811 AMAQI
27th Jul 20254112 PMAQI
27th Jul 2025331 PMAQI
27th Jul 2025302 PMAQI
27th Jul 2025303 PMAQI
27th Jul 2025274 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025266 PMAQI
27th Jul 2025267 PMAQI
27th Jul 2025288 PMAQI
27th Jul 2025309 PMAQI
27th Jul 20252810 PMAQI
27th Jul 20252911 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025311 AMAQI
28th Jul 2025362 AMAQI
28th Jul 2025363 AMAQI
31°C28/35°C
28th Jul 2025364 AMAQI
28th Jul 2025365 AMAQI
28th Jul 2025366 AMAQI
28th Jul 2025377 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025289 AMAQI
28th Jul 20253110 AMAQI
28th Jul 20253211 AMAQI
28th Jul 20254012 PMAQI
28th Jul 2025451 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025583 PMAQI
28th Jul 2025584 PMAQI
28th Jul 2025565 PMAQI
28th Jul 2025526 PMAQI
28th Jul 2025457 PMAQI
28th Jul 2025378 PMAQI
28th Jul 2025369 PMAQI
28th Jul 20253610 PMAQI
28th Jul 20253311 PMAQI
29th Jul 20252912 AMAQI
29th Jul 2025321 AMAQI
29th Jul 2025352 AMAQI
29th Jul 2025353 AMAQI
31°C28/37°C
29th Jul 2025364 AMAQI
29th Jul 2025385 AMAQI
29th Jul 2025376 AMAQI
29th Jul 2025377 AMAQI
29th Jul 2025368 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20253010 AMAQI
29th Jul 20254011 AMAQI
29th Jul 20254412 PMAQI
29th Jul 2025521 PMAQI
29th Jul 2025502 PMAQI
29th Jul 2025493 PMAQI
29th Jul 2025414 PMAQI
29th Jul 2025385 PMAQI
29th Jul 2025296 PMAQI
29th Jul 2025257 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025299 PMAQI
29th Jul 20252510 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025281 AMAQI
30th Jul 2025342 AMAQI
30th Jul 2025353 AMAQI
32°C27/38°C
30th Jul 2025364 AMAQI
30th Jul 2025365 AMAQI
30th Jul 2025366 AMAQI
30th Jul 2025377 AMAQI
30th Jul 2025388 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20251710 AMAQI
30th Jul 20252011 AMAQI
30th Jul 20252512 PMAQI
30th Jul 2025321 PMAQI
30th Jul 2025232 PMAQI
30th Jul 2025213 PMAQI
30th Jul 2025244 PMAQI
30th Jul 2025265 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025347 PMAQI
30th Jul 2025348 PMAQI
30th Jul 2025339 PMAQI
30th Jul 20253310 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253312 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025332 AMAQI
31st Jul 2025323 AMAQI
30°C27/36°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 20254011 AMAQI
31st Jul 20253512 PMAQI
31st Jul 2025281 PMAQI
31st Jul 2025282 PMAQI
31st Jul 2025233 PMAQI
31st Jul 2025224 PMAQI
31st Jul 2025235 PMAQI
31st Jul 2025216 PMAQI
31st Jul 2025207 PMAQI
31st Jul 2025248 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20252812 AMAQI
1st Aug 2025301 AMAQI
1st Aug 2025352 AMAQI
1st Aug 2025363 AMAQI
29°C25/34°C
1st Aug 2025364 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025387 AMAQI
1st Aug 2025398 AMAQI
1st Aug 2025269 AMAQI
1st Aug 20252910 AMAQI
1st Aug 20253511 AMAQI
1st Aug 20253812 PMAQI
1st Aug 2025301 PMAQI
1st Aug 2025352 PMAQI
1st Aug 2025323 PMAQI
1st Aug 2025414 PMAQI
1st Aug 2025295 PMAQI
1st Aug 2025346 PMAQI
1st Aug 2025237 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025289 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252511 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025372 AMAQI
2nd Aug 2025373 AMAQI
28°C26/32°C
2nd Aug 2025384 AMAQI
2nd Aug 2025395 AMAQI
2nd Aug 2025406 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025398 AMAQI
2nd Aug 2025289 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20253511 AMAQI
2nd Aug 20253812 PMAQI
2nd Aug 2025431 PMAQI
2nd Aug 2025542 PMAQI
2nd Aug 2025523 PMAQI
2nd Aug 2025524 PMAQI
2nd Aug 2025455 PMAQI
2nd Aug 2025556 PMAQI
2nd Aug 2025487 PMAQI
2nd Aug 2025398 PMAQI
2nd Aug 2025349 PMAQI
2nd Aug 20253610 PMAQI
2nd Aug 20254211 PMAQI
3rd Aug 20253512 AMAQI
3rd Aug 2025371 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
31°C27/36°C
3rd Aug 2025394 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025449 AMAQI
3rd Aug 20255310 AMAQI
3rd Aug 20255411 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025501 PMAQI
3rd Aug 2025542 PMAQI
3rd Aug 2025503 PMAQI
3rd Aug 2025464 PMAQI
3rd Aug 2025485 PMAQI
3rd Aug 2025466 PMAQI
3rd Aug 2025407 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20254112 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025393 AMAQI
32°C28/37°C
4th Aug 2025414 AMAQI
4th Aug 2025435 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025427 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025629 AMAQI
4th Aug 20256510 AMAQI
4th Aug 20258011 AMAQI
4th Aug 20257912 PMAQI
4th Aug 2025861 PMAQI
4th Aug 2025902 PMAQI
4th Aug 2025803 PMAQI
4th Aug 2025834 PMAQI
4th Aug 2025845 PMAQI
4th Aug 2025746 PMAQI
4th Aug 2025767 PMAQI
4th Aug 2025668 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20254711 PMAQI
5th Aug 20255612 AMAQI
5th Aug 2025431 AMAQI
5th Aug 2025402 AMAQI
5th Aug 2025403 AMAQI
--°C/°C
5th Aug 2025504 AMAQI
4 AM5th Aug 2025535 AMAQI
5th Aug 2025526 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025548 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
9 AM - 10 AM
43AQI
2 hours / Day
60 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 9 AM to 10 AM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 3 AM
45AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM - 11 PM
42AQI
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. 42).
2025 Days Vs Air Quality
Chuo, Yashio, Saitama, Japan
2025
86%
186
14%
30
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Good
186 DaysModerate
30 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 216 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
Chuo, 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
33AQI
33AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
26AQI
26AQI
4th January 2025
30AQI
30AQI
5th January 2025
37AQI
37AQI
6th January 2025
58AQI
58AQI
7th January 2025
32AQI
32AQI
8th January 2025
35AQI
35AQI
9th January 2025
34AQI
34AQI
10th January 2025
29AQI
29AQI
11th January 2025
30AQI
30AQI
12th January 2025
45AQI
45AQI
13th January 2025
32AQI
32AQI
14th January 2025
46AQI
46AQI
15th January 2025
42AQI
42AQI
16th January 2025
37AQI
37AQI
17th January 2025
35AQI
35AQI
18th January 2025
38AQI
38AQI
19th January 2025
54AQI
54AQI
20th January 2025
44AQI
44AQI
21st January 2025
47AQI
47AQI
22nd January 2025
44AQI
44AQI
23rd January 2025
56AQI
56AQI
24th January 2025
51AQI
51AQI
25th January 2025
44AQI
44AQI
26th January 2025
36AQI
36AQI
27th January 2025
41AQI
41AQI
28th January 2025
45AQI
45AQI
29th January 2025
33AQI
33AQI
30th January 2025
36AQI
36AQI
31st January 2025
29AQI
29AQI
1st February 2025
45AQI
45AQI
2nd February 2025
35AQI
35AQI
3rd February 2025
45AQI
45AQI
4th February 2025
33AQI
33AQI
5th February 2025
33AQI
33AQI
6th February 2025
28AQI
28AQI
7th February 2025
31AQI
31AQI
8th February 2025
28AQI
28AQI
9th February 2025
29AQI
29AQI
10th February 2025
28AQI
28AQI
11th February 2025
30AQI
30AQI
12th February 2025
41AQI
41AQI
13th February 2025
36AQI
36AQI
14th February 2025
34AQI
34AQI
15th February 2025
32AQI
32AQI
16th February 2025
42AQI
42AQI
17th February 2025
38AQI
38AQI
18th February 2025
34AQI
34AQI
19th February 2025
30AQI
30AQI
20th February 2025
29AQI
29AQI
21st February 2025
30AQI
30AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
30AQI
30AQI
24th February 2025
32AQI
32AQI
25th February 2025
34AQI
34AQI
26th February 2025
40AQI
40AQI
27th February 2025
43AQI
43AQI
28th February 2025
57AQI
57AQI
1st March 2025
52AQI
52AQI
2nd March 2025
63AQI
63AQI
3rd March 2025
39AQI
39AQI
4th March 2025
40AQI
40AQI
5th March 2025
28AQI
28AQI
6th March 2025
35AQI
35AQI
7th March 2025
31AQI
31AQI
8th March 2025
37AQI
37AQI
9th March 2025
35AQI
35AQI
10th March 2025
37AQI
37AQI
11th March 2025
44AQI
44AQI
12th March 2025
55AQI
55AQI
13th March 2025
45AQI
45AQI
14th March 2025
44AQI
44AQI
15th March 2025
39AQI
39AQI
16th March 2025
30AQI
30AQI
17th March 2025
22AQI
22AQI
18th March 2025
28AQI
28AQI
19th March 2025
18AQI
18AQI
20th March 2025
27AQI
27AQI
21st March 2025
45AQI
45AQI
22nd March 2025
55AQI
55AQI
23rd March 2025
59AQI
59AQI
24th March 2025
55AQI
55AQI
25th March 2025
71AQI
71AQI
26th March 2025
77AQI
77AQI
27th March 2025
74AQI
74AQI
28th March 2025
49AQI
49AQI
29th March 2025
38AQI
38AQI
30th March 2025
40AQI
40AQI
31st March 2025
32AQI
32AQI
1st April 2025
30AQI
30AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
21AQI
21AQI
4th April 2025
24AQI
24AQI
5th April 2025
29AQI
29AQI
6th April 2025
27AQI
27AQI
7th April 2025
33AQI
33AQI
8th April 2025
42AQI
42AQI
9th April 2025
31AQI
31AQI
10th April 2025
51AQI
51AQI
11th April 2025
42AQI
42AQI
12th April 2025
42AQI
42AQI
13th April 2025
34AQI
34AQI
14th April 2025
42AQI
42AQI
15th April 2025
32AQI
32AQI
16th April 2025
34AQI
34AQI
17th April 2025
48AQI
48AQI
18th April 2025
54AQI
54AQI
19th April 2025
66AQI
66AQI
20th April 2025
52AQI
52AQI
21st April 2025
48AQI
48AQI
22nd April 2025
48AQI
48AQI
23rd April 2025
33AQI
33AQI
24th April 2025
46AQI
46AQI
25th April 2025
47AQI
47AQI
26th April 2025
51AQI
51AQI
27th April 2025
56AQI
56AQI
28th April 2025
48AQI
48AQI
29th April 2025
37AQI
37AQI
30th April 2025
50AQI
50AQI
1st May 2025
43AQI
43AQI
2nd May 2025
34AQI
34AQI
3rd May 2025
35AQI
35AQI
4th May 2025
40AQI
40AQI
5th May 2025
38AQI
38AQI
6th May 2025
32AQI
32AQI
7th May 2025
28AQI
28AQI
8th May 2025
33AQI
33AQI
9th May 2025
35AQI
35AQI
10th May 2025
27AQI
27AQI
11th May 2025
28AQI
28AQI
12th May 2025
26AQI
26AQI
13th May 2025
35AQI
35AQI
14th May 2025
37AQI
37AQI
15th May 2025
39AQI
39AQI
16th May 2025
45AQI
45AQI
17th May 2025
30AQI
30AQI
18th May 2025
46AQI
46AQI
19th May 2025
44AQI
44AQI
20th May 2025
65AQI
65AQI
21st May 2025
51AQI
51AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
43AQI
43AQI
24th May 2025
43AQI
43AQI
25th May 2025
32AQI
32AQI
26th May 2025
30AQI
30AQI
27th May 2025
26AQI
26AQI
28th May 2025
26AQI
26AQI
29th May 2025
31AQI
31AQI
30th May 2025
27AQI
27AQI
31st May 2025
18AQI
18AQI
1st June 2025
25AQI
25AQI
2nd June 2025
33AQI
33AQI
3rd June 2025
37AQI
37AQI
4th June 2025
33AQI
33AQI
5th June 2025
43AQI
43AQI
6th June 2025
47AQI
47AQI
7th June 2025
50AQI
50AQI
8th June 2025
59AQI
59AQI
9th June 2025
49AQI
49AQI
10th June 2025
40AQI
40AQI
11th June 2025
36AQI
36AQI
12th June 2025
44AQI
44AQI
13th June 2025
45AQI
45AQI
14th June 2025
37AQI
37AQI
15th June 2025
36AQI
36AQI
16th June 2025
40AQI
40AQI
17th June 2025
51AQI
51AQI
18th June 2025
44AQI
44AQI
19th June 2025
44AQI
44AQI
20th June 2025
42AQI
42AQI
21st June 2025
32AQI
32AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
25AQI
25AQI
24th June 2025
24AQI
24AQI
25th June 2025
22AQI
22AQI
26th June 2025
22AQI
22AQI
27th June 2025
32AQI
32AQI
28th June 2025
32AQI
32AQI
29th June 2025
38AQI
38AQI
30th June 2025
42AQI
42AQI
1st July 2025
42AQI
42AQI
2nd July 2025
46AQI
46AQI
3rd July 2025
44AQI
44AQI
4th July 2025
47AQI
47AQI
5th July 2025
52AQI
52AQI
6th July 2025
66AQI
66AQI
7th July 2025
80AQI
80AQI
8th July 2025
78AQI
78AQI
9th July 2025
80AQI
80AQI
10th July 2025
60AQI
60AQI
11th July 2025
47AQI
47AQI
12th July 2025
50AQI
50AQI
13th July 2025
48AQI
48AQI
14th July 2025
40AQI
40AQI
15th July 2025
38AQI
38AQI
16th July 2025
38AQI
38AQI
17th July 2025
43AQI
43AQI
18th July 2025
36AQI
36AQI
19th July 2025
32AQI
32AQI
20th July 2025
32AQI
32AQI
21st July 2025
35AQI
35AQI
22nd July 2025
35AQI
35AQI
23rd July 2025
38AQI
38AQI
24th July 2025
41AQI
41AQI
25th July 2025
36AQI
36AQI
26th July 2025
36AQI
36AQI
27th July 2025
33AQI
33AQI
28th July 2025
39AQI
39AQI
29th July 2025
34AQI
34AQI
30th July 2025
30AQI
30AQI
31st July 2025
29AQI
29AQI
1st August 2025
32AQI
32AQI
2nd August 2025
40AQI
40AQI
3rd August 2025
43AQI
43AQI
4th August 2025
49AQI
49AQI
39AQI
35AQI
43AQI
41AQI
36AQI
38AQI
45AQI
41AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202540AQI
27
4
27
1
22
9
24
6
29
2
28
2
25
6
4
186
30
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
February35AQI
202440AQI
25
6
26
3
23
8
18
12
26
5
27
3
17
14
29
2
21
9
27
4
24
6
30
1
293
73
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August32AQI
202342AQI
22
9
21
7
22
9
18
12
23
8
20
10
21
10
30
1
29
1
27
4
18
11
20
11
271
93
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August28AQI
202241AQI
24
7
14
7
19
12
19
11
25
6
19
11
20
4
1
28
28
3
20
10
26
5
243
76
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
September32AQI
202140AQI
22
9
21
7
22
8
1
27
3
26
5
21
9
28
3
27
4
29
1
27
4
20
10
19
12
289
75
1
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
August32AQI
202038AQI
9
4
16
5
18
23
7
31
21
10
19
27
4
17
13
16
15
197
58
Highest AQI recorded in
November46AQI
Lowest AQI recorded in
July28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
42AQILeast Polluted Year Recorded
2020(Avg.)
38AQIChuo's annual 2025 AQI (40) shows an average percentage change of -1.2% (improved AQI) compared to previous years: 2020 (38), 2021 (40), 2022 (41), 2023 (42), 2024 (40).
