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HistoryAQIPM2.5PM10COSO2NO2O3

Chaahoncha, Soka, 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+

October Air Quality Analysis

Chaahoncha, Soka, Saitama, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
31st Oct 2021
68AQI
Lowest AQI recorded on
22nd Oct 2021
15AQI

Same Day Analysis (12th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 29 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

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

Chaahoncha, Soka, Saitama, Japan

AQI
Day
Night
.

5 AM12th Oct 2025

5 PM

4 AM13th Oct 2025

Day time
Avg. Highest Time
5PM12th Oct

44AQI

Avg. Lowest Time
8AM12th Oct

23AQI

Night time
Avg. Highest Time
9PM12th Oct

58AQI

Avg. Lowest Time
6PM12th Oct

44AQI

In the last 24 hours,

Chaahoncha's AQI reached its highest point of 58 at 9 PM during the Night, while the lowest point, 23, was recorded at 8 AM during the Day between 12th Oct and 13th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Chaahoncha, Soka, Saitama, Japan

SepOct
13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
13th Sep 2025355 AMAQI
13th Sep 2025346 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025348 AMAQI
13th Sep 2025259 AMAQI
13th Sep 20252410 AMAQI
13th Sep 20253611 AMAQI
13th Sep 20253612 PMAQI
13th Sep 2025281 PMAQI
13th Sep 2025262 PMAQI
13th Sep 2025263 PMAQI
13th Sep 2025264 PMAQI
13th Sep 2025225 PMAQI
13th Sep 2025196 PMAQI
13th Sep 2025227 PMAQI
13th Sep 2025268 PMAQI
13th Sep 2025289 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20253211 PMAQI
14th Sep 20252912 AMAQI
14th Sep 2025371 AMAQI
14th Sep 2025342 AMAQI
14th Sep 2025363 AMAQI
14th Sep 2025344 AMAQI

27°C24/31°C

14th Sep 2025345 AMAQI
14th Sep 2025336 AMAQI
14th Sep 2025347 AMAQI
14th Sep 2025368 AMAQI
14th Sep 2025269 AMAQI
14th Sep 20252610 AMAQI
14th Sep 20253111 AMAQI
14th Sep 20253112 PMAQI
14th Sep 2025321 PMAQI
14th Sep 2025382 PMAQI
14th Sep 2025413 PMAQI
14th Sep 2025464 PMAQI
14th Sep 2025445 PMAQI
14th Sep 2025496 PMAQI
14th Sep 2025517 PMAQI
14th Sep 2025418 PMAQI
14th Sep 2025389 PMAQI
14th Sep 20253710 PMAQI
14th Sep 20253911 PMAQI
15th Sep 20253812 AMAQI
15th Sep 2025371 AMAQI
15th Sep 2025352 AMAQI
15th Sep 2025353 AMAQI
15th Sep 2025344 AMAQI

29°C27/33°C

15th Sep 2025345 AMAQI
15th Sep 2025356 AMAQI
15th Sep 2025367 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025469 AMAQI
15th Sep 20254810 AMAQI
15th Sep 20255011 AMAQI
15th Sep 20254512 PMAQI
15th Sep 2025351 PMAQI
15th Sep 2025362 PMAQI
15th Sep 2025343 PMAQI
15th Sep 2025304 PMAQI
15th Sep 2025435 PMAQI
15th Sep 2025486 PMAQI
15th Sep 2025467 PMAQI
15th Sep 2025388 PMAQI
15th Sep 2025349 PMAQI
15th Sep 20253810 PMAQI
15th Sep 20253711 PMAQI
16th Sep 20253412 AMAQI
16th Sep 2025381 AMAQI
16th Sep 2025352 AMAQI
16th Sep 2025353 AMAQI
16th Sep 2025364 AMAQI

29°C26/32°C

16th Sep 2025375 AMAQI
16th Sep 2025366 AMAQI
16th Sep 2025377 AMAQI
16th Sep 2025378 AMAQI
16th Sep 2025449 AMAQI
16th Sep 20255310 AMAQI
16th Sep 20255411 AMAQI
16th Sep 20255812 PMAQI
16th Sep 2025601 PMAQI
16th Sep 2025622 PMAQI
16th Sep 2025643 PMAQI
16th Sep 2025584 PMAQI
16th Sep 2025435 PMAQI
16th Sep 2025386 PMAQI
16th Sep 2025287 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025329 PMAQI
16th Sep 20253210 PMAQI
16th Sep 20253211 PMAQI
17th Sep 20253412 AMAQI
17th Sep 2025361 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025353 AMAQI
17th Sep 2025404 AMAQI

29°C27/33°C

17th Sep 2025425 AMAQI
17th Sep 2025426 AMAQI
17th Sep 2025427 AMAQI
17th Sep 2025428 AMAQI
17th Sep 2025509 AMAQI
17th Sep 20255410 AMAQI
17th Sep 20255611 AMAQI
17th Sep 20255812 PMAQI
17th Sep 2025581 PMAQI
17th Sep 2025592 PMAQI
17th Sep 2025583 PMAQI
17th Sep 2025544 PMAQI
17th Sep 2025585 PMAQI
17th Sep 2025566 PMAQI
17th Sep 2025597 PMAQI
17th Sep 2025528 PMAQI
17th Sep 2025569 PMAQI
17th Sep 20256310 PMAQI
17th Sep 20256211 PMAQI
18th Sep 20256112 AMAQI
18th Sep 2025541 AMAQI
18th Sep 2025382 AMAQI
18th Sep 2025383 AMAQI
18th Sep 2025414 AMAQI

31°C28/34°C

18th Sep 2025445 AMAQI
18th Sep 2025446 AMAQI
18th Sep 2025447 AMAQI
18th Sep 2025438 AMAQI
18th Sep 2025549 AMAQI
18th Sep 20256510 AMAQI
18th Sep 20257111 AMAQI
18th Sep 20257212 PMAQI
18th Sep 2025721 PMAQI
18th Sep 2025732 PMAQI
18th Sep 2025763 PMAQI
18th Sep 2025744 PMAQI
18th Sep 2025535 PMAQI
18th Sep 2025236 PMAQI
18th Sep 2025207 PMAQI
18th Sep 2025238 PMAQI
18th Sep 2025349 PMAQI
18th Sep 20253710 PMAQI
18th Sep 20253511 PMAQI
19th Sep 20253412 AMAQI
19th Sep 2025381 AMAQI
19th Sep 2025482 AMAQI
19th Sep 2025493 AMAQI
19th Sep 2025514 AMAQI

30°C24/36°C

19th Sep 2025545 AMAQI
19th Sep 2025546 AMAQI
19th Sep 2025547 AMAQI
19th Sep 2025548 AMAQI
19th Sep 2025259 AMAQI
19th Sep 20251810 AMAQI
19th Sep 20251711 AMAQI
19th Sep 20252012 PMAQI
19th Sep 2025241 PMAQI
19th Sep 2025242 PMAQI
19th Sep 2025293 PMAQI
19th Sep 2025354 PMAQI
19th Sep 2025285 PMAQI
19th Sep 2025246 PMAQI
19th Sep 2025247 PMAQI
19th Sep 2025298 PMAQI
19th Sep 2025369 PMAQI
19th Sep 20253610 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20253612 AMAQI
20th Sep 2025401 AMAQI
20th Sep 2025502 AMAQI
20th Sep 2025503 AMAQI
20th Sep 2025474 AMAQI

22°C21/23°C

20th Sep 2025445 AMAQI
20th Sep 2025446 AMAQI
20th Sep 2025447 AMAQI
20th Sep 2025448 AMAQI
20th Sep 2025239 AMAQI
20th Sep 20251710 AMAQI
20th Sep 20252011 AMAQI
20th Sep 20251812 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025362 PMAQI
20th Sep 2025423 PMAQI
20th Sep 2025444 PMAQI
20th Sep 2025385 PMAQI
20th Sep 2025306 PMAQI
20th Sep 2025327 PMAQI
20th Sep 2025388 PMAQI
20th Sep 2025429 PMAQI
20th Sep 20254110 PMAQI
20th Sep 20253711 PMAQI
21st Sep 20253712 AMAQI
21st Sep 2025401 AMAQI
21st Sep 2025442 AMAQI
21st Sep 2025453 AMAQI
21st Sep 2025444 AMAQI

25°C23/27°C

21st Sep 2025405 AMAQI
21st Sep 2025406 AMAQI
21st Sep 2025407 AMAQI
21st Sep 2025418 AMAQI
21st Sep 2025269 AMAQI
21st Sep 20251710 AMAQI
21st Sep 20251811 AMAQI
21st Sep 20251812 PMAQI
21st Sep 2025161 PMAQI
21st Sep 2025162 PMAQI
21st Sep 2025173 PMAQI
21st Sep 2025144 PMAQI
21st Sep 2025145 PMAQI
21st Sep 2025156 PMAQI
21st Sep 2025187 PMAQI
21st Sep 2025268 PMAQI
21st Sep 2025319 PMAQI
21st Sep 20253210 PMAQI
21st Sep 20253311 PMAQI
22nd Sep 20253112 AMAQI
22nd Sep 2025361 AMAQI
22nd Sep 2025402 AMAQI
22nd Sep 2025423 AMAQI
22nd Sep 2025394 AMAQI

26°C22/32°C

22nd Sep 2025365 AMAQI
22nd Sep 2025366 AMAQI
22nd Sep 2025367 AMAQI
22nd Sep 2025368 AMAQI
22nd Sep 2025219 AMAQI
22nd Sep 20252010 AMAQI
22nd Sep 20252411 AMAQI
22nd Sep 20252112 PMAQI
22nd Sep 2025221 PMAQI
22nd Sep 2025222 PMAQI
22nd Sep 2025243 PMAQI
22nd Sep 2025224 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025226 PMAQI
22nd Sep 2025247 PMAQI
22nd Sep 2025268 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252910 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20252912 AMAQI
23rd Sep 2025341 AMAQI
23rd Sep 2025382 AMAQI
23rd Sep 2025383 AMAQI
23rd Sep 2025364 AMAQI

24°C22/27°C

23rd Sep 2025345 AMAQI
23rd Sep 2025346 AMAQI
23rd Sep 2025347 AMAQI
23rd Sep 2025348 AMAQI
23rd Sep 2025289 AMAQI
23rd Sep 20252610 AMAQI
23rd Sep 20251811 AMAQI
23rd Sep 20252112 PMAQI
23rd Sep 2025241 PMAQI
23rd Sep 2025242 PMAQI
23rd Sep 2025243 PMAQI
23rd Sep 2025224 PMAQI
23rd Sep 2025225 PMAQI
23rd Sep 2025226 PMAQI
23rd Sep 2025227 PMAQI
23rd Sep 2025248 PMAQI
23rd Sep 2025289 PMAQI
23rd Sep 20252810 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252812 AMAQI
24th Sep 2025301 AMAQI
24th Sep 2025342 AMAQI
24th Sep 2025343 AMAQI
24th Sep 2025334 AMAQI

23°C21/27°C

24th Sep 2025325 AMAQI
24th Sep 2025326 AMAQI
24th Sep 2025327 AMAQI
24th Sep 2025328 AMAQI
24th Sep 2025299 AMAQI
24th Sep 20252610 AMAQI
24th Sep 20252411 AMAQI
24th Sep 20252912 PMAQI
24th Sep 2025311 PMAQI
24th Sep 2025312 PMAQI
24th Sep 2025303 PMAQI
24th Sep 2025244 PMAQI
24th Sep 2025245 PMAQI
24th Sep 2025256 PMAQI
24th Sep 2025207 PMAQI
24th Sep 2025248 PMAQI
24th Sep 2025289 PMAQI
24th Sep 20253010 PMAQI
24th Sep 20252811 PMAQI
25th Sep 20252812 AMAQI
25th Sep 2025291 AMAQI
25th Sep 2025322 AMAQI
25th Sep 2025323 AMAQI
25th Sep 2025324 AMAQI

24°C21/27°C

25th Sep 2025315 AMAQI
25th Sep 2025326 AMAQI
25th Sep 2025327 AMAQI
25th Sep 2025318 AMAQI
25th Sep 2025289 AMAQI
25th Sep 20252810 AMAQI
25th Sep 20253411 AMAQI
25th Sep 20254112 PMAQI
25th Sep 2025411 PMAQI
25th Sep 2025422 PMAQI
25th Sep 2025383 PMAQI
25th Sep 2025324 PMAQI
25th Sep 2025325 PMAQI
25th Sep 2025306 PMAQI
25th Sep 2025287 PMAQI
25th Sep 2025328 PMAQI
25th Sep 2025339 PMAQI
25th Sep 20253410 PMAQI
25th Sep 20253411 PMAQI
26th Sep 20253312 AMAQI
26th Sep 2025301 AMAQI
26th Sep 2025312 AMAQI
26th Sep 2025323 AMAQI
26th Sep 2025384 AMAQI

25°C22/28°C

26th Sep 2025415 AMAQI
26th Sep 2025436 AMAQI
26th Sep 2025447 AMAQI
26th Sep 2025578 AMAQI
26th Sep 2025689 AMAQI
26th Sep 20256010 AMAQI
26th Sep 20255811 AMAQI
26th Sep 20256512 PMAQI
26th Sep 2025641 PMAQI
26th Sep 2025602 PMAQI
26th Sep 2025633 PMAQI
26th Sep 2025614 PMAQI
26th Sep 2025625 PMAQI
26th Sep 2025786 PMAQI
26th Sep 2025537 PMAQI
26th Sep 2025418 PMAQI
26th Sep 2025539 PMAQI
26th Sep 20255610 PMAQI
26th Sep 20254611 PMAQI
27th Sep 20254912 AMAQI
27th Sep 2025451 AMAQI
27th Sep 2025312 AMAQI
27th Sep 2025223 AMAQI
27th Sep 2025204 AMAQI

28°C24/32°C

27th Sep 2025205 AMAQI
27th Sep 2025186 AMAQI
27th Sep 2025217 AMAQI
27th Sep 2025278 AMAQI
27th Sep 2025329 AMAQI
27th Sep 20253310 AMAQI
27th Sep 20253311 AMAQI
27th Sep 20253812 PMAQI
27th Sep 2025391 PMAQI
27th Sep 2025342 PMAQI
27th Sep 2025373 PMAQI
27th Sep 2025324 PMAQI
27th Sep 2025285 PMAQI
27th Sep 2025326 PMAQI
27th Sep 2025297 PMAQI
27th Sep 2025318 PMAQI
27th Sep 2025339 PMAQI
27th Sep 20253010 PMAQI
27th Sep 20253111 PMAQI
28th Sep 20253012 AMAQI
28th Sep 2025281 AMAQI
28th Sep 2025242 AMAQI
28th Sep 2025313 AMAQI
28th Sep 2025274 AMAQI

25°C23/28°C

28th Sep 2025295 AMAQI
28th Sep 2025336 AMAQI
28th Sep 2025337 AMAQI
28th Sep 2025338 AMAQI
28th Sep 2025409 AMAQI
28th Sep 20254410 AMAQI
28th Sep 20254411 AMAQI
28th Sep 20254412 PMAQI
28th Sep 2025351 PMAQI
28th Sep 2025372 PMAQI
28th Sep 2025423 PMAQI
28th Sep 2025374 PMAQI
28th Sep 2025335 PMAQI
28th Sep 2025286 PMAQI
28th Sep 2025317 PMAQI
28th Sep 2025338 PMAQI
28th Sep 2025299 PMAQI
28th Sep 20253110 PMAQI
28th Sep 20253311 PMAQI
29th Sep 20253312 AMAQI
29th Sep 2025331 AMAQI
29th Sep 2025232 AMAQI
29th Sep 2025213 AMAQI
29th Sep 2025224 AMAQI

26°C24/28°C

29th Sep 2025225 AMAQI
29th Sep 2025286 AMAQI
29th Sep 2025307 AMAQI
29th Sep 2025288 AMAQI
29th Sep 2025339 AMAQI
29th Sep 20254310 AMAQI
29th Sep 20254411 AMAQI
29th Sep 20254412 PMAQI
29th Sep 2025371 PMAQI
29th Sep 2025422 PMAQI
29th Sep 2025493 PMAQI
29th Sep 2025454 PMAQI
29th Sep 2025515 PMAQI
29th Sep 2025466 PMAQI
29th Sep 2025407 PMAQI
29th Sep 2025508 PMAQI
29th Sep 2025469 PMAQI
29th Sep 20255410 PMAQI
29th Sep 20254511 PMAQI
30th Sep 20254812 AMAQI
30th Sep 2025371 AMAQI
30th Sep 2025312 AMAQI
30th Sep 2025233 AMAQI
30th Sep 2025154 AMAQI

27°C24/32°C

30th Sep 2025205 AMAQI
30th Sep 2025216 AMAQI
30th Sep 2025147 AMAQI
30th Sep 2025158 AMAQI
30th Sep 2025129 AMAQI
30th Sep 20252210 AMAQI
30th Sep 20252411 AMAQI
30th Sep 20252112 PMAQI
30th Sep 2025311 PMAQI
30th Sep 2025362 PMAQI
30th Sep 2025273 PMAQI
30th Sep 2025274 PMAQI
30th Sep 2025335 PMAQI
30th Sep 2025306 PMAQI
30th Sep 2025307 PMAQI
30th Sep 2025338 PMAQI
30th Sep 2025309 PMAQI
30th Sep 20252610 PMAQI
30th Sep 20253311 PMAQI
1st Oct 20253612 AMAQI
1st Oct 2025471 AMAQI
1st Oct 2025402 AMAQI
1st Oct 2025433 AMAQI
1st Oct 2025394 AMAQI

25°C22/28°C

1st Oct 2025395 AMAQI
1st Oct 2025496 AMAQI
1st Oct 2025487 AMAQI
1st Oct 2025528 AMAQI
1st Oct 2025509 AMAQI
1st Oct 20254410 AMAQI
1st Oct 20254511 AMAQI
1st Oct 20254112 PMAQI
1st Oct 2025401 PMAQI
1st Oct 2025372 PMAQI
1st Oct 2025393 PMAQI
1st Oct 2025424 PMAQI
1st Oct 2025415 PMAQI
1st Oct 2025386 PMAQI
1st Oct 2025367 PMAQI
1st Oct 2025318 PMAQI
1st Oct 2025249 PMAQI
1st Oct 20253110 PMAQI
1st Oct 20253411 PMAQI
2nd Oct 20254212 AMAQI
2nd Oct 2025491 AMAQI
2nd Oct 2025482 AMAQI
2nd Oct 2025543 AMAQI
2nd Oct 2025544 AMAQI

21°C20/21°C

2nd Oct 2025545 AMAQI
2nd Oct 2025556 AMAQI
2nd Oct 2025557 AMAQI
2nd Oct 2025548 AMAQI
2nd Oct 2025599 AMAQI
2nd Oct 20255610 AMAQI
2nd Oct 20256511 AMAQI
2nd Oct 20255912 PMAQI
2nd Oct 2025431 PMAQI
2nd Oct 2025442 PMAQI
2nd Oct 2025503 PMAQI
2nd Oct 2025454 PMAQI
2nd Oct 2025415 PMAQI
2nd Oct 2025416 PMAQI
2nd Oct 2025417 PMAQI
2nd Oct 2025458 PMAQI
2nd Oct 2025459 PMAQI
2nd Oct 20254610 PMAQI
2nd Oct 20254011 PMAQI
3rd Oct 20253512 AMAQI
3rd Oct 2025341 AMAQI
3rd Oct 2025432 AMAQI
3rd Oct 2025423 AMAQI
3rd Oct 2025444 AMAQI

23°C20/28°C

3rd Oct 2025405 AMAQI
3rd Oct 2025386 AMAQI
3rd Oct 2025397 AMAQI
3rd Oct 2025348 AMAQI
3rd Oct 2025379 AMAQI
3rd Oct 20253710 AMAQI
3rd Oct 20254411 AMAQI
3rd Oct 20254412 PMAQI
3rd Oct 2025461 PMAQI
3rd Oct 2025482 PMAQI
3rd Oct 2025493 PMAQI
3rd Oct 2025534 PMAQI
3rd Oct 2025515 PMAQI
3rd Oct 2025506 PMAQI
3rd Oct 2025467 PMAQI
3rd Oct 2025438 PMAQI
3rd Oct 2025589 PMAQI
3rd Oct 20256110 PMAQI
3rd Oct 20255811 PMAQI
4th Oct 20255212 AMAQI
4th Oct 2025491 AMAQI
4th Oct 2025552 AMAQI
4th Oct 2025583 AMAQI
4th Oct 2025554 AMAQI

24°C22/27°C

4th Oct 2025575 AMAQI
4th Oct 2025576 AMAQI
4th Oct 2025587 AMAQI
4th Oct 2025668 AMAQI
4th Oct 2025669 AMAQI
4th Oct 20256410 AMAQI
4th Oct 20256011 AMAQI
4th Oct 20255812 PMAQI
4th Oct 2025601 PMAQI
4th Oct 2025622 PMAQI
4th Oct 2025633 PMAQI
4th Oct 2025544 PMAQI
4th Oct 2025405 PMAQI
4th Oct 2025396 PMAQI
4th Oct 2025447 PMAQI
4th Oct 2025438 PMAQI
4th Oct 2025429 PMAQI
4th Oct 20254310 PMAQI
4th Oct 20254611 PMAQI
5th Oct 20255312 AMAQI
5th Oct 2025561 AMAQI
5th Oct 2025502 AMAQI
5th Oct 2025523 AMAQI
5th Oct 2025474 AMAQI

24°C22/26°C

5th Oct 2025485 AMAQI
5th Oct 2025436 AMAQI
5th Oct 2025437 AMAQI
5th Oct 2025488 AMAQI
5th Oct 2025539 AMAQI
5th Oct 20255110 AMAQI
5th Oct 20254811 AMAQI
5th Oct 20255212 PMAQI
5th Oct 2025551 PMAQI
5th Oct 2025572 PMAQI
5th Oct 2025593 PMAQI
5th Oct 2025594 PMAQI
5th Oct 2025615 PMAQI
5th Oct 2025606 PMAQI
5th Oct 2025587 PMAQI
5th Oct 2025528 PMAQI
5th Oct 2025549 PMAQI
5th Oct 20253610 PMAQI
5th Oct 20254011 PMAQI
6th Oct 20254012 AMAQI
6th Oct 2025431 AMAQI
6th Oct 2025392 AMAQI
6th Oct 2025353 AMAQI
6th Oct 2025324 AMAQI

25°C22/29°C

6th Oct 2025495 AMAQI
6th Oct 2025566 AMAQI
6th Oct 2025547 AMAQI
6th Oct 2025548 AMAQI
6th Oct 2025549 AMAQI
6th Oct 20255110 AMAQI
6th Oct 20255211 AMAQI
6th Oct 20255512 PMAQI
6th Oct 2025531 PMAQI
6th Oct 2025542 PMAQI
6th Oct 2025543 PMAQI
6th Oct 2025544 PMAQI
6th Oct 2025535 PMAQI
6th Oct 2025546 PMAQI
6th Oct 2025517 PMAQI
6th Oct 2025538 PMAQI
6th Oct 2025559 PMAQI
6th Oct 20255210 PMAQI
6th Oct 20255411 PMAQI
7th Oct 20255512 AMAQI
7th Oct 2025551 AMAQI
7th Oct 2025562 AMAQI

24°C21/28°C

7th Oct 2025488 PMAQI
7th Oct 2025419 PMAQI
7th Oct 20255510 PMAQI
7th Oct 20255211 PMAQI
8th Oct 20255112 AMAQI
8th Oct 2025501 AMAQI
8th Oct 2025522 AMAQI
8th Oct 2025523 AMAQI
8th Oct 2025514 AMAQI

22°C21/23°C

8th Oct 2025515 AMAQI
8th Oct 2025516 AMAQI
8th Oct 2025497 AMAQI
8th Oct 2025458 AMAQI
8th Oct 2025549 AMAQI
8th Oct 20255410 AMAQI
8th Oct 20255411 AMAQI
8th Oct 20255212 PMAQI
8th Oct 2025561 PMAQI
8th Oct 2025592 PMAQI
8th Oct 2025583 PMAQI
8th Oct 2025584 PMAQI
8th Oct 2025595 PMAQI
8th Oct 2025586 PMAQI
8th Oct 2025597 PMAQI
8th Oct 2025598 PMAQI
8th Oct 2025579 PMAQI
8th Oct 20255610 PMAQI
8th Oct 20255911 PMAQI
9th Oct 20255712 AMAQI
9th Oct 2025601 AMAQI
9th Oct 2025582 AMAQI
9th Oct 2025593 AMAQI
9th Oct 2025564 AMAQI

24°C21/29°C

9th Oct 2025565 AMAQI
9th Oct 2025496 AMAQI
9th Oct 2025477 AMAQI
9th Oct 2025488 AMAQI
9th Oct 2025469 AMAQI
9th Oct 20254310 AMAQI
9th Oct 20253811 AMAQI
9th Oct 20255212 PMAQI
9th Oct 2025531 PMAQI
9th Oct 2025522 PMAQI
9th Oct 2025553 PMAQI
9th Oct 2025554 PMAQI
9th Oct 2025565 PMAQI
9th Oct 2025556 PMAQI
9th Oct 2025537 PMAQI
9th Oct 2025528 PMAQI
9th Oct 2025529 PMAQI
9th Oct 20254510 PMAQI
9th Oct 20254911 PMAQI
10th Oct 20255412 AMAQI
10th Oct 2025521 AMAQI
10th Oct 2025422 AMAQI
10th Oct 2025423 AMAQI
10th Oct 2025464 AMAQI

21°C19/22°C

10th Oct 2025495 AMAQI
10th Oct 2025546 AMAQI
10th Oct 2025557 AMAQI
10th Oct 2025508 AMAQI
10th Oct 2025499 AMAQI
10th Oct 20254810 AMAQI
10th Oct 20255011 AMAQI
10th Oct 20254812 PMAQI
10th Oct 2025491 PMAQI
10th Oct 2025562 PMAQI
10th Oct 2025563 PMAQI
10th Oct 2025564 PMAQI
10th Oct 2025575 PMAQI
10th Oct 2025596 PMAQI
10th Oct 2025587 PMAQI
10th Oct 2025588 PMAQI
10th Oct 2025589 PMAQI
10th Oct 20255810 PMAQI
10th Oct 20255611 PMAQI
11th Oct 20255512 AMAQI
11th Oct 2025571 AMAQI
11th Oct 2025572 AMAQI
11th Oct 2025583 AMAQI
11th Oct 2025584 AMAQI

21°C18/24°C

11th Oct 2025565 AMAQI
11th Oct 2025536 AMAQI
11th Oct 2025567 AMAQI
11th Oct 2025558 AMAQI
11th Oct 2025559 AMAQI
11th Oct 20255410 AMAQI
11th Oct 20255311 AMAQI
11th Oct 20255612 PMAQI
11th Oct 2025471 PMAQI
11th Oct 2025442 PMAQI
11th Oct 2025393 PMAQI
11th Oct 2025394 PMAQI
11th Oct 2025335 PMAQI
11th Oct 2025346 PMAQI
11th Oct 2025257 PMAQI
11th Oct 2025268 PMAQI
11th Oct 2025269 PMAQI
11th Oct 20252610 PMAQI
11th Oct 20252711 PMAQI
12th Oct 20252712 AMAQI
12th Oct 2025251 AMAQI
12th Oct 2025262 AMAQI
12th Oct 2025373 AMAQI
12th Oct 2025394 AMAQI

19°C18/21°C

12th Oct 2025235 AMAQI
12th Oct 2025276 AMAQI
12th Oct 2025237 AMAQI
12th Oct 2025238 AMAQI
12th Oct 2025259 AMAQI
12th Oct 20254010 AMAQI
12th Oct 20253611 AMAQI
12th Oct 20253212 PMAQI
12th Oct 2025271 PMAQI
12th Oct 2025272 PMAQI
12th Oct 2025293 PMAQI
12th Oct 2025334 PMAQI
12th Oct 2025445 PMAQI
12th Oct 2025446 PMAQI
12th Oct 2025567 PMAQI
12th Oct 2025578 PMAQI
12th Oct 2025589 PMAQI
12th Oct 20255410 PMAQI
12th Oct 20255211 PMAQI
13th Oct 20255312 AMAQI
13th Oct 2025571 AMAQI
13th Oct 2025582 AMAQI
13th Oct 2025583 AMAQI
13th Oct 2025564 AMAQI

21°C18/24°C

13th Oct 2025545 AMAQI
5 AM
13th Oct 2025546 AMAQI
13th Oct 2025557 AMAQI
13th Oct 2025558 AMAQI
13th Oct 2025659 AMAQI
13th Oct 20256710 AMAQI
13th Oct 20256811 AMAQI
11 AM
5 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 3 PM

42AQI

11 hours / Day
330 hours / Month
Avg. Lowest Time
5 AM - 5 PM

42AQI

13 hours / Day
390 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 3 PM (Avg. 42), while the lowest AQI was between 5 AM to 5 PM (Avg. 42).
Night time
Avg. Highest Time
1 AM - 6 PM

41AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
7 PM - 11 PM

40AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 6 PM (Avg. 41), while the lowest AQI was between 7 PM to 11 PM (Avg. 40).

2025 Days Vs Air Quality

Chaahoncha, Soka, Saitama, Japan

2025

91%

258

9%

27

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

Good
258 Days
Moderate
27 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 91%

Health Risk Level:

Very Low

In 2025, 91% of 286 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

Chaahoncha, Soka, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
27AQI
2nd January 2025
27AQI
3rd January 2025
23AQI
4th January 2025
25AQI
5th January 2025
23AQI
6th January 2025
32AQI
7th January 2025
25AQI
8th January 2025
27AQI
9th January 2025
26AQI
10th January 2025
26AQI
11th January 2025
24AQI
12th January 2025
27AQI
13th January 2025
30AQI
14th January 2025
28AQI
15th January 2025
32AQI
16th January 2025
26AQI
17th January 2025
30AQI
18th January 2025
26AQI
19th January 2025
33AQI
20th January 2025
30AQI
21st January 2025
34AQI
22nd January 2025
32AQI
23rd January 2025
33AQI
24th January 2025
37AQI
25th January 2025
33AQI
26th January 2025
32AQI
27th January 2025
27AQI
28th January 2025
33AQI
29th January 2025
27AQI
30th January 2025
28AQI
31st January 2025
27AQI
1st February 2025
29AQI
2nd February 2025
29AQI
3rd February 2025
26AQI
4th February 2025
30AQI
5th February 2025
28AQI
6th February 2025
27AQI
7th February 2025
26AQI
8th February 2025
29AQI
9th February 2025
28AQI
10th February 2025
26AQI
11th February 2025
30AQI
12th February 2025
31AQI
13th February 2025
31AQI
14th February 2025
28AQI
15th February 2025
29AQI
16th February 2025
33AQI
17th February 2025
34AQI
18th February 2025
31AQI
19th February 2025
29AQI
20th February 2025
30AQI
21st February 2025
29AQI
22nd February 2025
31AQI
23rd February 2025
31AQI
24th February 2025
33AQI
25th February 2025
31AQI
26th February 2025
34AQI
27th February 2025
38AQI
28th February 2025
41AQI
1st March 2025
44AQI
2nd March 2025
50AQI
3rd March 2025
35AQI
4th March 2025
35AQI
5th March 2025
25AQI
6th March 2025
31AQI
7th March 2025
29AQI
8th March 2025
33AQI
9th March 2025
33AQI
10th March 2025
32AQI
11th March 2025
32AQI
12th March 2025
35AQI
13th March 2025
33AQI
14th March 2025
28AQI
15th March 2025
22AQI
16th March 2025
20AQI
17th March 2025
16AQI
18th March 2025
18AQI
19th March 2025
14AQI
20th March 2025
20AQI
21st March 2025
32AQI
22nd March 2025
40AQI
23rd March 2025
46AQI
24th March 2025
42AQI
25th March 2025
64AQI
26th March 2025
71AQI
27th March 2025
65AQI
28th March 2025
42AQI
29th March 2025
34AQI
30th March 2025
38AQI
31st March 2025
31AQI
1st April 2025
25AQI
2nd April 2025
21AQI
3rd April 2025
19AQI
4th April 2025
18AQI
5th April 2025
20AQI
6th April 2025
17AQI
7th April 2025
19AQI
8th April 2025
24AQI
9th April 2025
21AQI
10th April 2025
34AQI
11th April 2025
31AQI
12th April 2025
29AQI
13th April 2025
23AQI
14th April 2025
29AQI
15th April 2025
24AQI
16th April 2025
22AQI
17th April 2025
34AQI
18th April 2025
38AQI
19th April 2025
46AQI
20th April 2025
34AQI
21st April 2025
34AQI
22nd April 2025
31AQI
23rd April 2025
21AQI
24th April 2025
28AQI
25th April 2025
30AQI
26th April 2025
32AQI
27th April 2025
36AQI
28th April 2025
29AQI
29th April 2025
25AQI
30th April 2025
28AQI
1st May 2025
24AQI
2nd May 2025
22AQI
3rd May 2025
20AQI
4th May 2025
23AQI
5th May 2025
21AQI
6th May 2025
20AQI
7th May 2025
15AQI
8th May 2025
18AQI
9th May 2025
17AQI
10th May 2025
15AQI
11th May 2025
17AQI
12th May 2025
16AQI
13th May 2025
19AQI
14th May 2025
18AQI
15th May 2025
21AQI
16th May 2025
23AQI
17th May 2025
18AQI
18th May 2025
25AQI
19th May 2025
24AQI
20th May 2025
44AQI
21st May 2025
36AQI
22nd May 2025
28AQI
23rd May 2025
26AQI
24th May 2025
24AQI
25th May 2025
19AQI
26th May 2025
18AQI
27th May 2025
16AQI
28th May 2025
15AQI
29th May 2025
17AQI
30th May 2025
16AQI
31st May 2025
14AQI
1st June 2025
16AQI
2nd June 2025
17AQI
3rd June 2025
20AQI
4th June 2025
20AQI
5th June 2025
24AQI
6th June 2025
25AQI
7th June 2025
25AQI
8th June 2025
29AQI
9th June 2025
24AQI
10th June 2025
23AQI
11th June 2025
23AQI
12th June 2025
25AQI
13th June 2025
25AQI
14th June 2025
21AQI
15th June 2025
23AQI
16th June 2025
22AQI
17th June 2025
34AQI
18th June 2025
29AQI
19th June 2025
27AQI
20th June 2025
25AQI
21st June 2025
23AQI
22nd June 2025
21AQI
23rd June 2025
18AQI
24th June 2025
19AQI
25th June 2025
16AQI
26th June 2025
15AQI
27th June 2025
18AQI
28th June 2025
18AQI
29th June 2025
21AQI
30th June 2025
39AQI
1st July 2025
42AQI
2nd July 2025
47AQI
3rd July 2025
44AQI
4th July 2025
48AQI
5th July 2025
53AQI
6th July 2025
68AQI
7th July 2025
83AQI
8th July 2025
81AQI
9th July 2025
84AQI
10th July 2025
61AQI
11th July 2025
47AQI
12th July 2025
50AQI
13th July 2025
49AQI
14th July 2025
40AQI
15th July 2025
39AQI
16th July 2025
39AQI
17th July 2025
43AQI
18th July 2025
38AQI
19th July 2025
34AQI
20th July 2025
33AQI
21st July 2025
37AQI
22nd July 2025
38AQI
23rd July 2025
41AQI
24th July 2025
43AQI
25th July 2025
40AQI
26th July 2025
41AQI
27th July 2025
35AQI
28th July 2025
43AQI
29th July 2025
36AQI
30th July 2025
31AQI
31st July 2025
32AQI
1st August 2025
33AQI
2nd August 2025
41AQI
3rd August 2025
44AQI
4th August 2025
60AQI
5th August 2025
51AQI
6th August 2025
51AQI
7th August 2025
50AQI
8th August 2025
47AQI
9th August 2025
50AQI
10th August 2025
38AQI
11th August 2025
39AQI
12th August 2025
35AQI
13th August 2025
33AQI
14th August 2025
38AQI
15th August 2025
35AQI
16th August 2025
39AQI
17th August 2025
38AQI
18th August 2025
44AQI
19th August 2025
44AQI
20th August 2025
48AQI
21st August 2025
50AQI
22nd August 2025
51AQI
23rd August 2025
49AQI
24th August 2025
56AQI
25th August 2025
55AQI
26th August 2025
53AQI
27th August 2025
51AQI
28th August 2025
45AQI
29th August 2025
51AQI
30th August 2025
55AQI
31st August 2025
53AQI
1st September 2025
44AQI
2nd September 2025
38AQI
3rd September 2025
37AQI
4th September 2025
41AQI
5th September 2025
30AQI
6th September 2025
30AQI
7th September 2025
30AQI
8th September 2025
41AQI
9th September 2025
43AQI
10th September 2025
39AQI
11th September 2025
33AQI
12th September 2025
31AQI
13th September 2025
30AQI
14th September 2025
37AQI
15th September 2025
39AQI
16th September 2025
41AQI
17th September 2025
50AQI
18th September 2025
47AQI
19th September 2025
36AQI
20th September 2025
37AQI
21st September 2025
29AQI
22nd September 2025
29AQI
23rd September 2025
28AQI
24th September 2025
29AQI
25th September 2025
33AQI
26th September 2025
51AQI
27th September 2025
31AQI
28th September 2025
33AQI
29th September 2025
38AQI
30th September 2025
27AQI
1st October 2025
40AQI
2nd October 2025
49AQI
3rd October 2025
45AQI
4th October 2025
52AQI
5th October 2025
51AQI
6th October 2025
48AQI
7th October 2025
51AQI
8th October 2025
54AQI
9th October 2025
52AQI
10th October 2025
53AQI
11th October 2025
44AQI
12th October 2025
29AQI
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

29AQI

30AQI

35AQI

27AQI

21AQI

23AQI

46AQI

46AQI

36AQI

47AQI

No. of days

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

202533AQI

31
28
28
3
30
31
30
25
6
20
11
29
1
6
6
258
27

Highest AQI recorded in

October

47AQI

Lowest AQI recorded in

May

21AQI

202433AQI

29
2
28
1
30
1
29
1
31
29
1
17
14
29
2
27
1
2
30
1
28
2
31
338
26
2

Highest AQI recorded in

July

52AQI

Lowest AQI recorded in

December

27AQI

202332AQI

30
1
27
1
26
5
22
8
28
3
29
1
30
1
31
30
31
27
2
31
342
22

Highest AQI recorded in

April

43AQI

Lowest AQI recorded in

August

21AQI

202233AQI

31
19
2
29
2
16
1
26
5
20
10
19
2
1
29
29
2
29
1
30
1
278
26

Highest AQI recorded in

June

45AQI

Lowest AQI recorded in

August

25AQI

202129AQI

30
1
28
29
2
30
27
4
25
5
29
2
26
5
28
2
30
1
26
4
22
9
330
35

Highest AQI recorded in

June

40AQI

Lowest AQI recorded in

February

14AQI

202017AQI

13
21
18
30
31
31
19
31
29
1
31
254
1

Highest AQI recorded in

March

23AQI

Lowest AQI recorded in

April

12AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
33AQI
Least Polluted Year Recorded
2020(Avg.)
17AQI

Chaahoncha's annual 2025 AQI (33) shows an average percentage change of 23.1% (worsened AQI) compared to previous years: 2020 (17), 2021 (29), 2022 (33), 2023 (32), 2024 (33).