Chuo, Soja, Okayama, 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+
September Air Quality Analysis
Chuo, Soja, Okayama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Sep 2024
79AQILowest AQI recorded on
2nd Sep 2022
19AQISame Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 37 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Chuo, Soja, Okayama, Japan
AQI
Day
Night
.
5 AM20th Sep 2025
6 PM
4 AM21st Sep 2025
Day time
Avg. Highest Time
4PM20th Sep
57AQI
Avg. Lowest Time
10AM20th Sep
27AQI
Night time
Avg. Highest Time
7PM20th Sep
58AQI
Avg. Lowest Time
1AM21st Sep
27AQI
In the last 24 hours,
Chuo's AQI reached its highest point of 58 at 7 PM during the Night, while the lowest point, 27, was recorded at 1 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chuo, Soja, Okayama, Japan
AugSep
22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Aug 2025485 AMAQI
22nd Aug 2025486 AMAQI
22nd Aug 2025477 AMAQI
22nd Aug 2025488 AMAQI
22nd Aug 2025399 AMAQI
22nd Aug 20253610 AMAQI
22nd Aug 20254611 AMAQI
22nd Aug 20254012 PMAQI
22nd Aug 2025421 PMAQI
22nd Aug 2025472 PMAQI
22nd Aug 2025363 PMAQI
22nd Aug 2025364 PMAQI
22nd Aug 2025345 PMAQI
22nd Aug 2025326 PMAQI
22nd Aug 2025447 PMAQI
22nd Aug 2025368 PMAQI
22nd Aug 2025429 PMAQI
22nd Aug 20254010 PMAQI
22nd Aug 20253911 PMAQI
23rd Aug 20254112 AMAQI
23rd Aug 2025451 AMAQI
23rd Aug 2025472 AMAQI
23rd Aug 2025483 AMAQI
23rd Aug 2025484 AMAQI
28°C24/33°C
23rd Aug 2025485 AMAQI
23rd Aug 2025486 AMAQI
23rd Aug 2025477 AMAQI
23rd Aug 2025478 AMAQI
23rd Aug 2025349 AMAQI
23rd Aug 20253910 AMAQI
23rd Aug 20254511 AMAQI
23rd Aug 20254612 PMAQI
23rd Aug 2025391 PMAQI
23rd Aug 2025442 PMAQI
23rd Aug 2025473 PMAQI
23rd Aug 2025564 PMAQI
23rd Aug 2025545 PMAQI
23rd Aug 2025566 PMAQI
23rd Aug 2025547 PMAQI
23rd Aug 2025548 PMAQI
23rd Aug 2025539 PMAQI
23rd Aug 20255410 PMAQI
23rd Aug 20255411 PMAQI
24th Aug 20255312 AMAQI
24th Aug 2025481 AMAQI
24th Aug 2025472 AMAQI
24th Aug 2025473 AMAQI
24th Aug 2025464 AMAQI
28°C24/34°C
24th Aug 2025465 AMAQI
24th Aug 2025466 AMAQI
24th Aug 2025467 AMAQI
24th Aug 2025458 AMAQI
24th Aug 2025529 AMAQI
24th Aug 20255910 AMAQI
24th Aug 20255611 AMAQI
24th Aug 20255812 PMAQI
24th Aug 2025551 PMAQI
24th Aug 2025612 PMAQI
24th Aug 2025653 PMAQI
24th Aug 2025604 PMAQI
24th Aug 2025575 PMAQI
24th Aug 2025626 PMAQI
24th Aug 2025617 PMAQI
24th Aug 2025568 PMAQI
24th Aug 2025549 PMAQI
24th Aug 20254810 PMAQI
24th Aug 20254811 PMAQI
25th Aug 20255212 AMAQI
25th Aug 2025481 AMAQI
25th Aug 2025482 AMAQI
25th Aug 2025483 AMAQI
25th Aug 2025514 AMAQI
28°C25/34°C
25th Aug 2025515 AMAQI
25th Aug 2025506 AMAQI
25th Aug 2025517 AMAQI
25th Aug 2025508 AMAQI
25th Aug 2025529 AMAQI
25th Aug 20255210 AMAQI
25th Aug 20255911 AMAQI
25th Aug 20256412 PMAQI
25th Aug 2025611 PMAQI
25th Aug 2025482 PMAQI
25th Aug 2025623 PMAQI
25th Aug 2025634 PMAQI
25th Aug 2025565 PMAQI
25th Aug 2025646 PMAQI
25th Aug 2025607 PMAQI
25th Aug 2025588 PMAQI
25th Aug 2025539 PMAQI
25th Aug 20255110 PMAQI
25th Aug 20255211 PMAQI
26th Aug 20255312 AMAQI
26th Aug 2025511 AMAQI
26th Aug 2025502 AMAQI
26th Aug 2025483 AMAQI
26th Aug 2025524 AMAQI
28°C24/32°C
26th Aug 2025525 AMAQI
26th Aug 2025526 AMAQI
26th Aug 2025527 AMAQI
26th Aug 2025518 AMAQI
26th Aug 2025439 AMAQI
26th Aug 20255810 AMAQI
26th Aug 20256011 AMAQI
26th Aug 20255812 PMAQI
26th Aug 2025581 PMAQI
26th Aug 2025642 PMAQI
26th Aug 2025593 PMAQI
26th Aug 2025594 PMAQI
26th Aug 2025645 PMAQI
26th Aug 2025516 PMAQI
26th Aug 2025627 PMAQI
26th Aug 2025558 PMAQI
26th Aug 2025549 PMAQI
26th Aug 20255210 PMAQI
26th Aug 20254711 PMAQI
27th Aug 20254512 AMAQI
27th Aug 2025511 AMAQI
27th Aug 2025512 AMAQI
27th Aug 2025523 AMAQI
27th Aug 2025534 AMAQI
27°C24/32°C
27th Aug 2025535 AMAQI
27th Aug 2025546 AMAQI
27th Aug 2025547 AMAQI
27th Aug 2025548 AMAQI
27th Aug 2025569 AMAQI
27th Aug 20255810 AMAQI
27th Aug 20255411 AMAQI
27th Aug 20255612 PMAQI
27th Aug 2025561 PMAQI
27th Aug 2025562 PMAQI
27th Aug 2025603 PMAQI
27th Aug 2025594 PMAQI
27th Aug 2025575 PMAQI
27th Aug 2025566 PMAQI
27th Aug 2025517 PMAQI
27th Aug 2025458 PMAQI
27th Aug 2025489 PMAQI
27th Aug 20254610 PMAQI
27th Aug 20254511 PMAQI
28th Aug 20254812 AMAQI
28th Aug 2025511 AMAQI
28th Aug 2025522 AMAQI
28th Aug 2025523 AMAQI
28th Aug 2025524 AMAQI
26°C23/31°C
28th Aug 2025535 AMAQI
28th Aug 2025536 AMAQI
28th Aug 2025527 AMAQI
28th Aug 2025538 AMAQI
28th Aug 2025519 AMAQI
28th Aug 20255710 AMAQI
28th Aug 20255811 AMAQI
28th Aug 20255312 PMAQI
28th Aug 2025581 PMAQI
28th Aug 2025532 PMAQI
28th Aug 2025543 PMAQI
28th Aug 2025514 PMAQI
28th Aug 2025605 PMAQI
28th Aug 2025606 PMAQI
28th Aug 2025527 PMAQI
28th Aug 2025548 PMAQI
28th Aug 2025509 PMAQI
28th Aug 20255310 PMAQI
28th Aug 20255011 PMAQI
29th Aug 20255112 AMAQI
29th Aug 2025521 AMAQI
29th Aug 2025522 AMAQI
29th Aug 2025513 AMAQI
29th Aug 2025524 AMAQI
26°C23/31°C
29th Aug 2025525 AMAQI
29th Aug 2025526 AMAQI
29th Aug 2025527 AMAQI
29th Aug 2025528 AMAQI
29th Aug 2025469 AMAQI
29th Aug 20255710 AMAQI
29th Aug 20255411 AMAQI
29th Aug 20255612 PMAQI
29th Aug 2025541 PMAQI
29th Aug 2025522 PMAQI
29th Aug 2025583 PMAQI
29th Aug 2025594 PMAQI
29th Aug 2025605 PMAQI
29th Aug 2025606 PMAQI
29th Aug 2025607 PMAQI
29th Aug 2025568 PMAQI
29th Aug 2025549 PMAQI
29th Aug 20255310 PMAQI
29th Aug 20255311 PMAQI
30th Aug 20255312 AMAQI
30th Aug 2025531 AMAQI
30th Aug 2025522 AMAQI
30th Aug 2025513 AMAQI
30th Aug 2025514 AMAQI
28°C24/34°C
30th Aug 2025505 AMAQI
30th Aug 2025526 AMAQI
30th Aug 2025527 AMAQI
30th Aug 2025528 AMAQI
30th Aug 2025609 AMAQI
30th Aug 20255510 AMAQI
30th Aug 20255711 AMAQI
30th Aug 20256012 PMAQI
30th Aug 2025601 PMAQI
30th Aug 2025602 PMAQI
30th Aug 2025563 PMAQI
30th Aug 2025554 PMAQI
30th Aug 2025615 PMAQI
30th Aug 2025566 PMAQI
30th Aug 2025567 PMAQI
30th Aug 2025548 PMAQI
30th Aug 2025529 PMAQI
30th Aug 20255410 PMAQI
30th Aug 20255311 PMAQI
31st Aug 20255312 AMAQI
31st Aug 2025531 AMAQI
31st Aug 2025522 AMAQI
31st Aug 2025523 AMAQI
31st Aug 2025524 AMAQI
28°C24/35°C
31st Aug 2025535 AMAQI
31st Aug 2025526 AMAQI
31st Aug 2025527 AMAQI
31st Aug 2025528 AMAQI
31st Aug 2025519 AMAQI
31st Aug 20255410 AMAQI
31st Aug 20256111 AMAQI
31st Aug 20256012 PMAQI
31st Aug 2025601 PMAQI
31st Aug 2025562 PMAQI
31st Aug 2025533 PMAQI
31st Aug 2025574 PMAQI
31st Aug 2025545 PMAQI
31st Aug 2025546 PMAQI
31st Aug 2025487 PMAQI
31st Aug 2025528 PMAQI
31st Aug 2025529 PMAQI
31st Aug 20254810 PMAQI
31st Aug 20254711 PMAQI
1st Sep 20254712 AMAQI
1st Sep 2025501 AMAQI
1st Sep 2025502 AMAQI
1st Sep 2025513 AMAQI
1st Sep 2025524 AMAQI
28°C24/34°C
1st Sep 2025525 AMAQI
1st Sep 2025526 AMAQI
1st Sep 2025527 AMAQI
1st Sep 2025528 AMAQI
1st Sep 2025369 AMAQI
1st Sep 20253010 AMAQI
1st Sep 20252611 AMAQI
1st Sep 20253512 PMAQI
1st Sep 2025371 PMAQI
1st Sep 2025332 PMAQI
1st Sep 2025333 PMAQI
1st Sep 2025284 PMAQI
1st Sep 2025305 PMAQI
1st Sep 2025316 PMAQI
1st Sep 2025317 PMAQI
1st Sep 2025358 PMAQI
1st Sep 2025349 PMAQI
1st Sep 20253610 PMAQI
1st Sep 20253911 PMAQI
2nd Sep 20253912 AMAQI
2nd Sep 2025481 AMAQI
2nd Sep 2025502 AMAQI
2nd Sep 2025493 AMAQI
2nd Sep 2025474 AMAQI
28°C24/33°C
2nd Sep 2025485 AMAQI
2nd Sep 2025466 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025468 AMAQI
2nd Sep 2025169 AMAQI
2nd Sep 20252410 AMAQI
2nd Sep 20252811 AMAQI
2nd Sep 20252012 PMAQI
2nd Sep 2025271 PMAQI
2nd Sep 2025272 PMAQI
2nd Sep 2025273 PMAQI
2nd Sep 2025284 PMAQI
2nd Sep 2025265 PMAQI
2nd Sep 2025196 PMAQI
2nd Sep 2025207 PMAQI
2nd Sep 2025288 PMAQI
2nd Sep 2025349 PMAQI
2nd Sep 20253410 PMAQI
2nd Sep 20253211 PMAQI
3rd Sep 20253412 AMAQI
3rd Sep 2025421 AMAQI
3rd Sep 2025472 AMAQI
3rd Sep 2025473 AMAQI
3rd Sep 2025444 AMAQI
28°C24/33°C
3rd Sep 2025425 AMAQI
3rd Sep 2025456 AMAQI
3rd Sep 2025437 AMAQI
3rd Sep 2025428 AMAQI
3rd Sep 2025269 AMAQI
3rd Sep 20253210 AMAQI
3rd Sep 20253511 AMAQI
3rd Sep 20254312 PMAQI
3rd Sep 2025501 PMAQI
3rd Sep 2025522 PMAQI
3rd Sep 2025483 PMAQI
3rd Sep 2025474 PMAQI
3rd Sep 2025405 PMAQI
3rd Sep 2025466 PMAQI
3rd Sep 2025407 PMAQI
3rd Sep 2025418 PMAQI
3rd Sep 2025419 PMAQI
3rd Sep 20253610 PMAQI
3rd Sep 20253411 PMAQI
4th Sep 20253312 AMAQI
4th Sep 2025401 AMAQI
4th Sep 2025442 AMAQI
4th Sep 2025443 AMAQI
4th Sep 2025444 AMAQI
27°C23/32°C
4th Sep 2025425 AMAQI
4th Sep 2025426 AMAQI
4th Sep 2025427 AMAQI
4th Sep 2025428 AMAQI
4th Sep 2025209 AMAQI
4th Sep 20252210 AMAQI
4th Sep 20252011 AMAQI
4th Sep 20252012 PMAQI
4th Sep 2025221 PMAQI
4th Sep 2025232 PMAQI
4th Sep 2025233 PMAQI
4th Sep 2025224 PMAQI
4th Sep 2025215 PMAQI
4th Sep 2025136 PMAQI
4th Sep 2025117 PMAQI
4th Sep 2025118 PMAQI
4th Sep 2025189 PMAQI
4th Sep 20251510 PMAQI
4th Sep 20251311 PMAQI
5th Sep 20251512 AMAQI
5th Sep 2025221 AMAQI
5th Sep 2025412 AMAQI
5th Sep 2025423 AMAQI
5th Sep 2025404 AMAQI
24°C24/26°C
5th Sep 2025375 AMAQI
5th Sep 2025366 AMAQI
5th Sep 2025377 AMAQI
5th Sep 2025378 AMAQI
5th Sep 2025219 AMAQI
5th Sep 20252010 AMAQI
5th Sep 20251911 AMAQI
5th Sep 20251712 PMAQI
5th Sep 2025181 PMAQI
5th Sep 2025222 PMAQI
5th Sep 2025193 PMAQI
5th Sep 2025244 PMAQI
5th Sep 2025215 PMAQI
5th Sep 2025246 PMAQI
5th Sep 2025297 PMAQI
5th Sep 2025248 PMAQI
5th Sep 2025239 PMAQI
5th Sep 20252410 PMAQI
5th Sep 20252411 PMAQI
6th Sep 20252212 AMAQI
6th Sep 2025261 AMAQI
6th Sep 2025262 AMAQI
6th Sep 2025263 AMAQI
6th Sep 2025274 AMAQI
26°C23/32°C
6th Sep 2025265 AMAQI
6th Sep 2025286 AMAQI
6th Sep 2025267 AMAQI
6th Sep 2025288 AMAQI
6th Sep 2025189 AMAQI
6th Sep 20253410 AMAQI
6th Sep 20252911 AMAQI
6th Sep 20252812 PMAQI
6th Sep 2025291 PMAQI
6th Sep 2025262 PMAQI
6th Sep 2025313 PMAQI
6th Sep 2025304 PMAQI
6th Sep 2025355 PMAQI
6th Sep 2025316 PMAQI
6th Sep 2025367 PMAQI
6th Sep 2025318 PMAQI
6th Sep 2025269 PMAQI
6th Sep 20252710 PMAQI
6th Sep 20253011 PMAQI
7th Sep 20253012 AMAQI
7th Sep 2025251 AMAQI
7th Sep 2025252 AMAQI
7th Sep 2025253 AMAQI
7th Sep 2025254 AMAQI
26°C21/33°C
7th Sep 2025255 AMAQI
7th Sep 2025256 AMAQI
7th Sep 2025267 AMAQI
7th Sep 2025268 AMAQI
7th Sep 2025369 AMAQI
7th Sep 20253810 AMAQI
7th Sep 20254011 AMAQI
7th Sep 20254412 PMAQI
7th Sep 2025431 PMAQI
7th Sep 2025422 PMAQI
7th Sep 2025503 PMAQI
7th Sep 2025384 PMAQI
7th Sep 2025375 PMAQI
7th Sep 2025366 PMAQI
7th Sep 2025427 PMAQI
7th Sep 2025348 PMAQI
7th Sep 2025329 PMAQI
7th Sep 20252810 PMAQI
7th Sep 20252811 PMAQI
8th Sep 20253012 AMAQI
8th Sep 2025261 AMAQI
8th Sep 2025272 AMAQI
8th Sep 2025263 AMAQI
8th Sep 2025274 AMAQI
27°C24/33°C
8th Sep 2025275 AMAQI
8th Sep 2025276 AMAQI
8th Sep 2025277 AMAQI
8th Sep 2025288 AMAQI
8th Sep 2025409 AMAQI
8th Sep 20254410 AMAQI
8th Sep 20254511 AMAQI
8th Sep 20254412 PMAQI
8th Sep 2025411 PMAQI
8th Sep 2025452 PMAQI
8th Sep 2025423 PMAQI
8th Sep 2025534 PMAQI
8th Sep 2025395 PMAQI
8th Sep 2025486 PMAQI
8th Sep 2025467 PMAQI
8th Sep 2025348 PMAQI
8th Sep 2025329 PMAQI
8th Sep 20253210 PMAQI
8th Sep 20253411 PMAQI
9th Sep 20253212 AMAQI
9th Sep 2025301 AMAQI
9th Sep 2025282 AMAQI
9th Sep 2025283 AMAQI
9th Sep 2025304 AMAQI
27°C24/32°C
9th Sep 2025325 AMAQI
9th Sep 2025326 AMAQI
9th Sep 2025307 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025339 AMAQI
9th Sep 20253310 AMAQI
9th Sep 20253211 AMAQI
9th Sep 20253812 PMAQI
9th Sep 2025481 PMAQI
9th Sep 2025382 PMAQI
9th Sep 2025383 PMAQI
9th Sep 2025384 PMAQI
9th Sep 2025385 PMAQI
9th Sep 2025386 PMAQI
9th Sep 2025297 PMAQI
9th Sep 2025338 PMAQI
9th Sep 2025339 PMAQI
9th Sep 20253210 PMAQI
9th Sep 20253211 PMAQI
10th Sep 20253412 AMAQI
10th Sep 2025311 AMAQI
10th Sep 2025322 AMAQI
10th Sep 2025303 AMAQI
10th Sep 2025324 AMAQI
27°C24/31°C
10th Sep 2025345 AMAQI
10th Sep 2025346 AMAQI
10th Sep 2025357 AMAQI
10th Sep 2025348 AMAQI
10th Sep 2025359 AMAQI
10th Sep 20253310 AMAQI
10th Sep 20254411 AMAQI
10th Sep 20254012 PMAQI
10th Sep 2025501 PMAQI
10th Sep 2025392 PMAQI
10th Sep 2025343 PMAQI
10th Sep 2025324 PMAQI
10th Sep 2025265 PMAQI
10th Sep 2025306 PMAQI
10th Sep 2025277 PMAQI
10th Sep 2025308 PMAQI
10th Sep 2025289 PMAQI
10th Sep 20253010 PMAQI
10th Sep 20253011 PMAQI
11th Sep 20253012 AMAQI
11th Sep 2025351 AMAQI
11th Sep 2025342 AMAQI
11th Sep 2025343 AMAQI
11th Sep 2025364 AMAQI
24°C22/28°C
11th Sep 2025365 AMAQI
11th Sep 2025376 AMAQI
11th Sep 2025367 AMAQI
11th Sep 2025378 AMAQI
11th Sep 2025199 AMAQI
11th Sep 20252810 AMAQI
11th Sep 20252111 AMAQI
11th Sep 20253412 PMAQI
11th Sep 2025371 PMAQI
11th Sep 2025362 PMAQI
11th Sep 2025283 PMAQI
11th Sep 2025284 PMAQI
11th Sep 2025245 PMAQI
11th Sep 2025246 PMAQI
11th Sep 2025237 PMAQI
11th Sep 2025288 PMAQI
11th Sep 2025289 PMAQI
11th Sep 20252710 PMAQI
11th Sep 20252711 PMAQI
12th Sep 20252812 AMAQI
12th Sep 2025341 AMAQI
12th Sep 2025362 AMAQI
12th Sep 2025363 AMAQI
12th Sep 2025334 AMAQI
25°C21/29°C
12th Sep 2025335 AMAQI
12th Sep 2025326 AMAQI
12th Sep 2025327 AMAQI
12th Sep 2025328 AMAQI
12th Sep 2025249 AMAQI
12th Sep 20252510 AMAQI
12th Sep 20252611 AMAQI
12th Sep 20252612 PMAQI
12th Sep 2025271 PMAQI
12th Sep 2025352 PMAQI
12th Sep 2025283 PMAQI
12th Sep 2025304 PMAQI
12th Sep 2025355 PMAQI
12th Sep 2025366 PMAQI
12th Sep 2025287 PMAQI
12th Sep 2025288 PMAQI
12th Sep 2025289 PMAQI
12th Sep 20252610 PMAQI
12th Sep 20252611 PMAQI
13th Sep 20252912 AMAQI
13th Sep 2025321 AMAQI
13th Sep 2025332 AMAQI
13th Sep 2025343 AMAQI
13th Sep 2025324 AMAQI
25°C21/30°C
13th Sep 2025335 AMAQI
13th Sep 2025326 AMAQI
13th Sep 2025317 AMAQI
13th Sep 2025328 AMAQI
13th Sep 2025189 AMAQI
13th Sep 20251610 AMAQI
13th Sep 20252411 AMAQI
13th Sep 20253012 PMAQI
13th Sep 2025301 PMAQI
13th Sep 2025322 PMAQI
13th Sep 2025443 PMAQI
13th Sep 2025304 PMAQI
13th Sep 2025305 PMAQI
13th Sep 2025276 PMAQI
13th Sep 2025387 PMAQI
13th Sep 2025368 PMAQI
13th Sep 2025309 PMAQI
13th Sep 20253410 PMAQI
13th Sep 20253211 PMAQI
14th Sep 20253312 AMAQI
14th Sep 2025321 AMAQI
14th Sep 2025322 AMAQI
14th Sep 2025323 AMAQI
14th Sep 2025314 AMAQI
26°C22/30°C
14th Sep 2025325 AMAQI
14th Sep 2025326 AMAQI
14th Sep 2025317 AMAQI
14th Sep 2025338 AMAQI
14th Sep 2025299 AMAQI
14th Sep 20252510 AMAQI
14th Sep 20253211 AMAQI
14th Sep 20253412 PMAQI
14th Sep 2025281 PMAQI
14th Sep 2025322 PMAQI
14th Sep 2025393 PMAQI
14th Sep 2025334 PMAQI
14th Sep 2025365 PMAQI
14th Sep 2025406 PMAQI
14th Sep 2025457 PMAQI
14th Sep 2025388 PMAQI
14th Sep 2025369 PMAQI
14th Sep 20253810 PMAQI
14th Sep 20253911 PMAQI
15th Sep 20253912 AMAQI
15th Sep 2025341 AMAQI
15th Sep 2025332 AMAQI
15th Sep 2025323 AMAQI
15th Sep 2025324 AMAQI
26°C23/30°C
15th Sep 2025315 AMAQI
15th Sep 2025326 AMAQI
15th Sep 2025327 AMAQI
15th Sep 2025328 AMAQI
15th Sep 2025449 AMAQI
15th Sep 20254210 AMAQI
15th Sep 20254811 AMAQI
15th Sep 20255412 PMAQI
15th Sep 2025431 PMAQI
15th Sep 2025442 PMAQI
15th Sep 2025523 PMAQI
15th Sep 2025514 PMAQI
15th Sep 2025485 PMAQI
15th Sep 2025506 PMAQI
15th Sep 2025467 PMAQI
15th Sep 2025438 PMAQI
15th Sep 2025369 PMAQI
15th Sep 20253810 PMAQI
15th Sep 20253411 PMAQI
16th Sep 20253212 AMAQI
16th Sep 2025331 AMAQI
16th Sep 2025342 AMAQI
16th Sep 2025343 AMAQI
16th Sep 2025344 AMAQI
27°C23/33°C
16th Sep 2025375 AMAQI
16th Sep 2025386 AMAQI
16th Sep 2025377 AMAQI
16th Sep 2025378 AMAQI
16th Sep 2025329 AMAQI
16th Sep 20253410 AMAQI
16th Sep 20254511 AMAQI
16th Sep 20256112 PMAQI
16th Sep 2025601 PMAQI
16th Sep 2025552 PMAQI
16th Sep 2025553 PMAQI
16th Sep 2025594 PMAQI
16th Sep 2025535 PMAQI
16th Sep 2025526 PMAQI
16th Sep 2025507 PMAQI
16th Sep 2025468 PMAQI
16th Sep 2025469 PMAQI
16th Sep 20254710 PMAQI
16th Sep 20254411 PMAQI
17th Sep 20254212 AMAQI
17th Sep 2025371 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025343 AMAQI
17th Sep 2025374 AMAQI
27°C24/32°C
17th Sep 2025395 AMAQI
17th Sep 2025406 AMAQI
17th Sep 2025397 AMAQI
17th Sep 2025408 AMAQI
17th Sep 2025489 AMAQI
17th Sep 20255110 AMAQI
17th Sep 20255611 AMAQI
17th Sep 20256812 PMAQI
17th Sep 2025611 PMAQI
17th Sep 2025642 PMAQI
17th Sep 2025593 PMAQI
17th Sep 2025524 PMAQI
17th Sep 2025585 PMAQI
17th Sep 2025616 PMAQI
17th Sep 2025457 PMAQI
17th Sep 2025478 PMAQI
17th Sep 2025429 PMAQI
17th Sep 20253610 PMAQI
17th Sep 20253311 PMAQI
18th Sep 20253412 AMAQI
18th Sep 2025381 AMAQI
18th Sep 2025382 AMAQI
18th Sep 2025373 AMAQI
18th Sep 2025414 AMAQI
27°C24/32°C
18th Sep 2025455 AMAQI
18th Sep 2025446 AMAQI
18th Sep 2025447 AMAQI
18th Sep 2025448 AMAQI
18th Sep 2025299 AMAQI
18th Sep 20252810 AMAQI
18th Sep 20252511 AMAQI
18th Sep 20251512 PMAQI
18th Sep 2025161 PMAQI
18th Sep 2025152 PMAQI
18th Sep 2025183 PMAQI
18th Sep 2025184 PMAQI
18th Sep 2025155 PMAQI
18th Sep 2025126 PMAQI
18th Sep 2025127 PMAQI
18th Sep 2025188 PMAQI
18th Sep 2025289 PMAQI
18th Sep 20253110 PMAQI
18th Sep 20253011 PMAQI
19th Sep 20253012 AMAQI
19th Sep 2025331 AMAQI
19th Sep 2025402 AMAQI
19th Sep 2025413 AMAQI
19th Sep 2025384 AMAQI
24°C21/28°C
19th Sep 2025365 AMAQI
19th Sep 2025366 AMAQI
19th Sep 2025387 AMAQI
19th Sep 2025368 AMAQI
19th Sep 2025239 AMAQI
19th Sep 20251710 AMAQI
19th Sep 20251611 AMAQI
19th Sep 20251912 PMAQI
19th Sep 2025201 PMAQI
19th Sep 2025212 PMAQI
19th Sep 2025223 PMAQI
19th Sep 2025234 PMAQI
19th Sep 2025225 PMAQI
19th Sep 2025256 PMAQI
19th Sep 2025267 PMAQI
19th Sep 2025308 PMAQI
19th Sep 2025369 PMAQI
19th Sep 20253810 PMAQI
19th Sep 20253311 PMAQI
20th Sep 20253212 AMAQI
20th Sep 2025321 AMAQI
20th Sep 2025362 AMAQI
20th Sep 2025373 AMAQI
20th Sep 2025354 AMAQI
23°C19/28°C
20th Sep 2025345 AMAQI
20th Sep 2025336 AMAQI
20th Sep 2025347 AMAQI
20th Sep 2025348 AMAQI
20th Sep 2025289 AMAQI
20th Sep 20252710 AMAQI
20th Sep 20253011 AMAQI
20th Sep 20253012 PMAQI
20th Sep 2025311 PMAQI
20th Sep 2025412 PMAQI
20th Sep 2025523 PMAQI
20th Sep 2025574 PMAQI
20th Sep 2025575 PMAQI
20th Sep 2025576 PMAQI
20th Sep 2025587 PMAQI
20th Sep 2025548 PMAQI
20th Sep 2025539 PMAQI
20th Sep 20255310 PMAQI
20th Sep 20255511 PMAQI
21st Sep 20254712 AMAQI
21st Sep 2025271 AMAQI
21st Sep 2025352 AMAQI
21st Sep 2025343 AMAQI
21st Sep 2025344 AMAQI
24°C21/28°C
21st Sep 2025335 AMAQI
5 AM21st Sep 2025346 AMAQI
21st Sep 2025347 AMAQI
21st Sep 2025338 AMAQI
21st Sep 2025189 AMAQI
21st Sep 20251410 AMAQI
21st Sep 20251411 AMAQI
11 AM21st Sep 20251512 PMAQI
21st Sep 2025141 PMAQI
21st Sep 2025152 PMAQI
21st Sep 2025143 PMAQI
21st Sep 2025134 PMAQI
21st Sep 2025145 PMAQI
21st Sep 2025146 PMAQI
6 PM21st Sep 2025157 PMAQI
21st Sep 2025228 PMAQI
21st Sep 2025279 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
12 PM - 6 PM
41AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
9 AM
35AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 PM to 6 PM (Avg. 41), while the lowest AQI was between 9 AM to 9 AM (Avg. 35).
Night time
Avg. Highest Time
12 AM - 11 PM
39AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM - 11 PM
39AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 39), while the lowest AQI was between 12 AM to 11 PM (Avg. 39).
2025 Days Vs Air Quality
Chuo, Soja, Okayama, Japan
2025
67%
175
32%
85
1%
3
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Good
175 DaysModerate
85 DaysPoor
3 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 67%
Health Risk Level:
Moderate
In 2025, 67% of 264 days were within WHO’s safe air quality limits, and 33% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Chuo, Soja, Okayama, 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
31AQI
2nd January 2025
38AQI
38AQI
3rd January 2025
31AQI
31AQI
4th January 2025
31AQI
31AQI
5th January 2025
35AQI
35AQI
6th January 2025
46AQI
46AQI
7th January 2025
32AQI
32AQI
8th January 2025
36AQI
36AQI
9th January 2025
29AQI
29AQI
10th January 2025
28AQI
28AQI
11th January 2025
29AQI
29AQI
12th January 2025
30AQI
30AQI
13th January 2025
34AQI
34AQI
14th January 2025
49AQI
49AQI
15th January 2025
39AQI
39AQI
16th January 2025
37AQI
37AQI
17th January 2025
33AQI
33AQI
18th January 2025
37AQI
37AQI
19th January 2025
45AQI
45AQI
20th January 2025
49AQI
49AQI
21st January 2025
45AQI
45AQI
22nd January 2025
62AQI
62AQI
23rd January 2025
77AQI
77AQI
24th January 2025
70AQI
70AQI
25th January 2025
47AQI
47AQI
26th January 2025
43AQI
43AQI
27th January 2025
36AQI
36AQI
28th January 2025
38AQI
38AQI
29th January 2025
32AQI
32AQI
30th January 2025
44AQI
44AQI
31st January 2025
68AQI
68AQI
1st February 2025
69AQI
69AQI
2nd February 2025
44AQI
44AQI
3rd February 2025
51AQI
51AQI
4th February 2025
40AQI
40AQI
5th February 2025
39AQI
39AQI
6th February 2025
32AQI
32AQI
7th February 2025
36AQI
36AQI
8th February 2025
30AQI
30AQI
9th February 2025
30AQI
30AQI
10th February 2025
30AQI
30AQI
11th February 2025
31AQI
31AQI
12th February 2025
39AQI
39AQI
13th February 2025
31AQI
31AQI
14th February 2025
39AQI
39AQI
15th February 2025
30AQI
30AQI
16th February 2025
50AQI
50AQI
17th February 2025
40AQI
40AQI
18th February 2025
39AQI
39AQI
19th February 2025
34AQI
34AQI
20th February 2025
33AQI
33AQI
21st February 2025
31AQI
31AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
32AQI
32AQI
24th February 2025
34AQI
34AQI
25th February 2025
38AQI
38AQI
26th February 2025
40AQI
40AQI
27th February 2025
62AQI
62AQI
28th February 2025
72AQI
72AQI
1st March 2025
105AQI
105AQI
2nd March 2025
105AQI
105AQI
3rd March 2025
60AQI
60AQI
4th March 2025
51AQI
51AQI
5th March 2025
35AQI
35AQI
6th March 2025
41AQI
41AQI
7th March 2025
35AQI
35AQI
8th March 2025
43AQI
43AQI
9th March 2025
42AQI
42AQI
10th March 2025
43AQI
43AQI
11th March 2025
43AQI
43AQI
12th March 2025
49AQI
49AQI
13th March 2025
52AQI
52AQI
14th March 2025
46AQI
46AQI
15th March 2025
37AQI
37AQI
16th March 2025
26AQI
26AQI
17th March 2025
35AQI
35AQI
18th March 2025
31AQI
31AQI
19th March 2025
38AQI
38AQI
20th March 2025
48AQI
48AQI
21st March 2025
56AQI
56AQI
22nd March 2025
64AQI
64AQI
23rd March 2025
67AQI
67AQI
24th March 2025
67AQI
67AQI
25th March 2025
72AQI
72AQI
26th March 2025
80AQI
80AQI
27th March 2025
79AQI
79AQI
28th March 2025
52AQI
52AQI
29th March 2025
49AQI
49AQI
30th March 2025
41AQI
41AQI
31st March 2025
44AQI
44AQI
1st April 2025
38AQI
38AQI
2nd April 2025
37AQI
37AQI
3rd April 2025
25AQI
25AQI
4th April 2025
37AQI
37AQI
5th April 2025
40AQI
40AQI
6th April 2025
49AQI
49AQI
7th April 2025
48AQI
48AQI
8th April 2025
51AQI
51AQI
9th April 2025
64AQI
64AQI
10th April 2025
61AQI
61AQI
11th April 2025
63AQI
63AQI
12th April 2025
54AQI
54AQI
13th April 2025
43AQI
43AQI
14th April 2025
50AQI
50AQI
15th April 2025
31AQI
31AQI
16th April 2025
49AQI
49AQI
17th April 2025
51AQI
51AQI
18th April 2025
62AQI
62AQI
19th April 2025
65AQI
65AQI
20th April 2025
61AQI
61AQI
21st April 2025
48AQI
48AQI
22nd April 2025
52AQI
52AQI
23rd April 2025
45AQI
45AQI
24th April 2025
36AQI
36AQI
25th April 2025
69AQI
69AQI
26th April 2025
62AQI
62AQI
27th April 2025
62AQI
62AQI
28th April 2025
52AQI
52AQI
29th April 2025
51AQI
51AQI
30th April 2025
61AQI
61AQI
1st May 2025
57AQI
57AQI
2nd May 2025
39AQI
39AQI
3rd May 2025
50AQI
50AQI
4th May 2025
40AQI
40AQI
5th May 2025
46AQI
46AQI
6th May 2025
34AQI
34AQI
7th May 2025
36AQI
36AQI
8th May 2025
30AQI
30AQI
9th May 2025
40AQI
40AQI
10th May 2025
34AQI
34AQI
11th May 2025
39AQI
39AQI
12th May 2025
52AQI
52AQI
13th May 2025
55AQI
55AQI
14th May 2025
64AQI
64AQI
15th May 2025
59AQI
59AQI
16th May 2025
57AQI
57AQI
17th May 2025
43AQI
43AQI
18th May 2025
48AQI
48AQI
19th May 2025
56AQI
56AQI
20th May 2025
66AQI
66AQI
21st May 2025
61AQI
61AQI
22nd May 2025
41AQI
41AQI
23rd May 2025
54AQI
54AQI
24th May 2025
42AQI
42AQI
25th May 2025
30AQI
30AQI
26th May 2025
33AQI
33AQI
27th May 2025
41AQI
41AQI
28th May 2025
43AQI
43AQI
29th May 2025
45AQI
45AQI
30th May 2025
40AQI
40AQI
31st May 2025
43AQI
43AQI
1st June 2025
49AQI
49AQI
2nd June 2025
64AQI
64AQI
3rd June 2025
35AQI
35AQI
4th June 2025
49AQI
49AQI
5th June 2025
49AQI
49AQI
6th June 2025
61AQI
61AQI
7th June 2025
64AQI
64AQI
8th June 2025
72AQI
72AQI
9th June 2025
56AQI
56AQI
10th June 2025
39AQI
39AQI
11th June 2025
49AQI
49AQI
12th June 2025
63AQI
63AQI
13th June 2025
61AQI
61AQI
14th June 2025
40AQI
40AQI
15th June 2025
39AQI
39AQI
16th June 2025
48AQI
48AQI
17th June 2025
42AQI
42AQI
18th June 2025
52AQI
52AQI
19th June 2025
55AQI
55AQI
20th June 2025
61AQI
61AQI
21st June 2025
60AQI
60AQI
22nd June 2025
61AQI
61AQI
23rd June 2025
51AQI
51AQI
24th June 2025
46AQI
46AQI
25th June 2025
46AQI
46AQI
26th June 2025
48AQI
48AQI
27th June 2025
58AQI
58AQI
28th June 2025
62AQI
62AQI
29th June 2025
62AQI
62AQI
30th June 2025
63AQI
63AQI
1st July 2025
64AQI
64AQI
2nd July 2025
90AQI
90AQI
3rd July 2025
89AQI
89AQI
4th July 2025
108AQI
108AQI
5th July 2025
90AQI
90AQI
6th July 2025
73AQI
73AQI
7th July 2025
77AQI
77AQI
8th July 2025
73AQI
73AQI
9th July 2025
85AQI
85AQI
10th July 2025
72AQI
72AQI
11th July 2025
62AQI
62AQI
12th July 2025
54AQI
54AQI
13th July 2025
50AQI
50AQI
14th July 2025
41AQI
41AQI
15th July 2025
50AQI
50AQI
16th July 2025
60AQI
60AQI
17th July 2025
39AQI
39AQI
18th July 2025
41AQI
41AQI
19th July 2025
35AQI
35AQI
20th July 2025
33AQI
33AQI
21st July 2025
35AQI
35AQI
22nd July 2025
48AQI
48AQI
23rd July 2025
39AQI
39AQI
24th July 2025
35AQI
35AQI
25th July 2025
27AQI
27AQI
26th July 2025
27AQI
27AQI
27th July 2025
25AQI
25AQI
28th July 2025
26AQI
26AQI
29th July 2025
37AQI
37AQI
30th July 2025
43AQI
43AQI
31st July 2025
47AQI
47AQI
1st August 2025
46AQI
46AQI
2nd August 2025
45AQI
45AQI
3rd August 2025
47AQI
47AQI
4th August 2025
60AQI
60AQI
5th August 2025
51AQI
51AQI
6th August 2025
53AQI
53AQI
7th August 2025
49AQI
49AQI
8th August 2025
48AQI
48AQI
9th August 2025
47AQI
47AQI
10th August 2025
45AQI
45AQI
11th August 2025
33AQI
33AQI
12th August 2025
35AQI
35AQI
13th August 2025
41AQI
41AQI
14th August 2025
44AQI
44AQI
15th August 2025
44AQI
44AQI
16th August 2025
42AQI
42AQI
17th August 2025
44AQI
44AQI
18th August 2025
48AQI
48AQI
19th August 2025
48AQI
48AQI
20th August 2025
47AQI
47AQI
21st August 2025
47AQI
47AQI
22nd August 2025
42AQI
42AQI
23rd August 2025
48AQI
48AQI
24th August 2025
53AQI
53AQI
25th August 2025
54AQI
54AQI
26th August 2025
54AQI
54AQI
27th August 2025
52AQI
52AQI
28th August 2025
53AQI
53AQI
29th August 2025
54AQI
54AQI
30th August 2025
55AQI
55AQI
31st August 2025
53AQI
53AQI
1st September 2025
40AQI
40AQI
2nd September 2025
34AQI
34AQI
3rd September 2025
41AQI
41AQI
4th September 2025
26AQI
26AQI
5th September 2025
26AQI
26AQI
6th September 2025
28AQI
28AQI
7th September 2025
33AQI
33AQI
8th September 2025
35AQI
35AQI
9th September 2025
33AQI
33AQI
10th September 2025
33AQI
33AQI
11th September 2025
30AQI
30AQI
12th September 2025
30AQI
30AQI
13th September 2025
31AQI
31AQI
14th September 2025
34AQI
34AQI
15th September 2025
40AQI
40AQI
16th September 2025
44AQI
44AQI
17th September 2025
46AQI
46AQI
18th September 2025
28AQI
28AQI
19th September 2025
30AQI
30AQI
20th September 2025
37AQI
37AQI
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
41AQI
40AQI
53AQI
51AQI
46AQI
54AQI
54AQI
48AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202547AQI
27
4
24
4
18
11
2
14
16
21
10
13
17
18
12
1
20
11
20
175
85
3
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
September34AQI
202444AQI
16
15
24
5
23
8
14
15
1
16
15
18
12
21
10
19
12
21
9
28
3
24
6
31
255
110
1
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
December34AQI
202348AQI
22
8
1
19
9
14
17
15
15
15
16
14
16
21
10
26
5
21
9
20
11
17
10
2
18
12
222
138
3
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
August39AQI
202248AQI
22
9
16
5
15
16
13
17
9
22
15
15
17
7
1
2
1
24
5
22
9
18
12
28
3
201
121
1
Highest AQI recorded in
May56AQI
Lowest AQI recorded in
December37AQI
202145AQI
22
9
16
12
15
14
12
9
16
15
14
16
24
7
24
7
25
5
25
6
21
9
23
8
237
117
Highest AQI recorded in
June52AQI
Lowest AQI recorded in
August40AQI
202043AQI
7
6
13
8
10
8
22
8
28
3
16
11
4
18
1
24
7
21
9
21
10
180
71
4
Highest AQI recorded in
August61AQI
Lowest AQI recorded in
September30AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
48AQILeast Polluted Year Recorded
2020(Avg.)
43AQIChuo's annual 2025 AQI (47) shows an average percentage change of 3.6% (worsened AQI) compared to previous years: 2020 (43), 2021 (45), 2022 (48), 2023 (48), 2024 (44).
