Koshigaya, 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
Koshigaya, Saitama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
76AQILowest AQI recorded on
30th Aug 2024
14AQISame Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Koshigaya, Saitama, Japan
AQI
Day
Night
.
4 AM7th Aug 2025
6 PM
3 AM8th Aug 2025
Day time
Avg. Highest Time
4AM7th Aug
52AQI
Avg. Lowest Time
3PM7th Aug
28AQI
Night time
Avg. Highest Time
2AM8th Aug
50AQI
Avg. Lowest Time
12AM8th Aug
47AQI
In the last 24 hours,
Koshigaya's AQI reached its highest point of 52 at 4 AM during the Day, while the lowest point, 28, was recorded at 3 PM during the Day between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Koshigaya, Saitama, Japan
JulAug
09th - 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 - 07th07th - 08th08th
Day
Night
9th Jul 2025664 AMAQI
9th Jul 2025705 AMAQI
9th Jul 2025716 AMAQI
9th Jul 2025707 AMAQI
9th Jul 2025708 AMAQI
9th Jul 20251049 AMAQI
9th Jul 202511410 AMAQI
9th Jul 202512011 AMAQI
9th Jul 202512712 PMAQI
9th Jul 20251081 PMAQI
9th Jul 20251052 PMAQI
9th Jul 2025993 PMAQI
9th Jul 20251014 PMAQI
9th Jul 2025985 PMAQI
9th Jul 2025956 PMAQI
9th Jul 2025857 PMAQI
9th Jul 2025688 PMAQI
9th Jul 2025659 PMAQI
9th Jul 20256410 PMAQI
9th Jul 20256211 PMAQI
10th Jul 20256312 AMAQI
10th Jul 2025651 AMAQI
10th Jul 2025702 AMAQI
10th Jul 2025713 AMAQI
31°C28/36°C
10th Jul 2025734 AMAQI
10th Jul 2025765 AMAQI
10th Jul 2025766 AMAQI
10th Jul 2025767 AMAQI
10th Jul 2025768 AMAQI
10th Jul 2025579 AMAQI
10th Jul 20256110 AMAQI
10th Jul 20257011 AMAQI
10th Jul 20257212 PMAQI
10th Jul 2025721 PMAQI
10th Jul 2025682 PMAQI
10th Jul 2025603 PMAQI
10th Jul 2025544 PMAQI
10th Jul 2025565 PMAQI
10th Jul 2025556 PMAQI
10th Jul 2025517 PMAQI
10th Jul 2025518 PMAQI
10th Jul 2025609 PMAQI
10th Jul 20256010 PMAQI
10th Jul 20256011 PMAQI
11th Jul 20256012 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025702 AMAQI
11th Jul 2025703 AMAQI
29°C23/36°C
11th Jul 2025704 AMAQI
11th Jul 2025695 AMAQI
11th Jul 2025696 AMAQI
11th Jul 2025697 AMAQI
11th Jul 2025698 AMAQI
11th Jul 2025319 AMAQI
11th Jul 20251910 AMAQI
11th Jul 20251811 AMAQI
11th Jul 20252112 PMAQI
11th Jul 2025331 PMAQI
11th Jul 2025342 PMAQI
11th Jul 2025413 PMAQI
11th Jul 2025344 PMAQI
11th Jul 2025335 PMAQI
11th Jul 2025346 PMAQI
11th Jul 2025357 PMAQI
11th Jul 2025458 PMAQI
11th Jul 2025589 PMAQI
11th Jul 20255810 PMAQI
11th Jul 20255811 PMAQI
12th Jul 20255812 AMAQI
12th Jul 2025611 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI
24°C22/27°C
12th Jul 2025654 AMAQI
12th Jul 2025625 AMAQI
12th Jul 2025626 AMAQI
12th Jul 2025627 AMAQI
12th Jul 2025628 AMAQI
12th Jul 2025429 AMAQI
12th Jul 20253910 AMAQI
12th Jul 20253911 AMAQI
12th Jul 20254512 PMAQI
12th Jul 2025501 PMAQI
12th Jul 2025492 PMAQI
12th Jul 2025483 PMAQI
12th Jul 2025474 PMAQI
12th Jul 2025455 PMAQI
12th Jul 2025416 PMAQI
12th Jul 2025407 PMAQI
12th Jul 2025458 PMAQI
12th Jul 2025559 PMAQI
12th Jul 20255610 PMAQI
12th Jul 20255611 PMAQI
13th Jul 20255612 AMAQI
13th Jul 2025581 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025623 AMAQI
24°C22/29°C
13th Jul 2025614 AMAQI
13th Jul 2025595 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025597 AMAQI
13th Jul 2025598 AMAQI
13th Jul 2025449 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20254411 AMAQI
13th Jul 20254812 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025512 PMAQI
13th Jul 2025523 PMAQI
13th Jul 2025494 PMAQI
13th Jul 2025475 PMAQI
13th Jul 2025456 PMAQI
13th Jul 2025427 PMAQI
13th Jul 2025428 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255210 PMAQI
13th Jul 20255311 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025592 AMAQI
14th Jul 2025583 AMAQI
27°C24/32°C
14th Jul 2025584 AMAQI
14th Jul 2025585 AMAQI
14th Jul 2025586 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025299 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20251912 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025282 PMAQI
14th Jul 2025283 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025305 PMAQI
14th Jul 2025326 PMAQI
14th Jul 2025307 PMAQI
14th Jul 2025348 PMAQI
14th Jul 2025499 PMAQI
14th Jul 20254810 PMAQI
14th Jul 20255011 PMAQI
15th Jul 20255012 AMAQI
15th Jul 2025531 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
26°C25/29°C
15th Jul 2025554 AMAQI
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025349 AMAQI
15th Jul 20252310 AMAQI
15th Jul 20252011 AMAQI
15th Jul 20252412 PMAQI
15th Jul 2025311 PMAQI
15th Jul 2025332 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025344 PMAQI
15th Jul 2025315 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025317 PMAQI
15th Jul 2025318 PMAQI
15th Jul 2025439 PMAQI
15th Jul 20254410 PMAQI
15th Jul 20254611 PMAQI
16th Jul 20254812 AMAQI
16th Jul 2025511 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025533 AMAQI
27°C26/30°C
16th Jul 2025534 AMAQI
16th Jul 2025525 AMAQI
16th Jul 2025526 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025539 AMAQI
16th Jul 20254610 AMAQI
16th Jul 20253311 AMAQI
16th Jul 20252512 PMAQI
16th Jul 2025271 PMAQI
16th Jul 2025282 PMAQI
16th Jul 2025273 PMAQI
16th Jul 2025274 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025376 PMAQI
16th Jul 2025287 PMAQI
16th Jul 2025338 PMAQI
16th Jul 2025449 PMAQI
16th Jul 20254310 PMAQI
16th Jul 20254411 PMAQI
17th Jul 20254412 AMAQI
17th Jul 2025481 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
28°C26/30°C
17th Jul 2025514 AMAQI
17th Jul 2025495 AMAQI
17th Jul 2025506 AMAQI
17th Jul 2025497 AMAQI
17th Jul 2025498 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20252910 AMAQI
17th Jul 20253411 AMAQI
17th Jul 20253312 PMAQI
17th Jul 2025371 PMAQI
17th Jul 2025352 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025397 PMAQI
17th Jul 2025418 PMAQI
17th Jul 2025449 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254511 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025492 AMAQI
18th Jul 2025493 AMAQI
29°C27/32°C
18th Jul 2025484 AMAQI
18th Jul 2025465 AMAQI
18th Jul 2025456 AMAQI
18th Jul 2025457 AMAQI
18th Jul 2025458 AMAQI
18th Jul 2025329 AMAQI
18th Jul 20252710 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252612 PMAQI
18th Jul 2025271 PMAQI
18th Jul 2025262 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025304 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025306 PMAQI
18th Jul 2025287 PMAQI
18th Jul 2025328 PMAQI
18th Jul 2025409 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20254011 PMAQI
19th Jul 20253912 AMAQI
19th Jul 2025411 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025473 AMAQI
29°C26/33°C
19th Jul 2025454 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025426 AMAQI
19th Jul 2025427 AMAQI
19th Jul 2025428 AMAQI
19th Jul 2025309 AMAQI
19th Jul 20252510 AMAQI
19th Jul 20252411 AMAQI
19th Jul 20252212 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025253 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025275 PMAQI
19th Jul 2025266 PMAQI
19th Jul 2025257 PMAQI
19th Jul 2025318 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253710 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025443 AMAQI
29°C26/33°C
20th Jul 2025424 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025416 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025408 AMAQI
20th Jul 2025319 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252511 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025253 PMAQI
20th Jul 2025274 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025287 PMAQI
20th Jul 2025318 PMAQI
20th Jul 2025369 PMAQI
20th Jul 20253510 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025361 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025413 AMAQI
30°C27/34°C
21st Jul 2025404 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025386 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025269 AMAQI
21st Jul 20252710 AMAQI
21st Jul 20253311 AMAQI
21st Jul 20254112 PMAQI
21st Jul 2025421 PMAQI
21st Jul 2025452 PMAQI
21st Jul 2025463 PMAQI
21st Jul 2025394 PMAQI
21st Jul 2025365 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025347 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253310 PMAQI
21st Jul 20253211 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025351 AMAQI
22nd Jul 2025382 AMAQI
22nd Jul 2025383 AMAQI
31°C28/36°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 20253210 AMAQI
22nd Jul 20253711 AMAQI
22nd Jul 20254312 PMAQI
22nd Jul 2025481 PMAQI
22nd Jul 2025512 PMAQI
22nd Jul 2025503 PMAQI
22nd Jul 2025524 PMAQI
22nd Jul 2025475 PMAQI
22nd Jul 2025386 PMAQI
22nd Jul 2025327 PMAQI
22nd Jul 2025318 PMAQI
22nd Jul 2025329 PMAQI
22nd Jul 20253210 PMAQI
22nd Jul 20253111 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025383 AMAQI
31°C28/36°C
23rd Jul 2025384 AMAQI
23rd Jul 2025395 AMAQI
23rd Jul 2025386 AMAQI
23rd Jul 2025397 AMAQI
23rd Jul 2025398 AMAQI
23rd Jul 2025339 AMAQI
23rd Jul 20254010 AMAQI
23rd Jul 20254611 AMAQI
23rd Jul 20255312 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025532 PMAQI
23rd Jul 2025553 PMAQI
23rd Jul 2025524 PMAQI
23rd Jul 2025515 PMAQI
23rd Jul 2025436 PMAQI
23rd Jul 2025377 PMAQI
23rd Jul 2025368 PMAQI
23rd Jul 2025329 PMAQI
23rd Jul 20253210 PMAQI
23rd Jul 20253311 PMAQI
24th Jul 20253212 AMAQI
24th Jul 2025341 AMAQI
24th Jul 2025372 AMAQI
24th Jul 2025373 AMAQI
31°C28/36°C
24th Jul 2025384 AMAQI
24th Jul 2025415 AMAQI
24th Jul 2025406 AMAQI
24th Jul 2025407 AMAQI
24th Jul 2025408 AMAQI
24th Jul 2025399 AMAQI
24th Jul 20254310 AMAQI
24th Jul 20255311 AMAQI
24th Jul 20255512 PMAQI
24th Jul 2025541 PMAQI
24th Jul 2025542 PMAQI
24th Jul 2025583 PMAQI
24th Jul 2025574 PMAQI
24th Jul 2025575 PMAQI
24th Jul 2025486 PMAQI
24th Jul 2025367 PMAQI
24th Jul 2025348 PMAQI
24th Jul 2025349 PMAQI
24th Jul 20253410 PMAQI
24th Jul 20253311 PMAQI
25th Jul 20253412 AMAQI
25th Jul 2025341 AMAQI
25th Jul 2025362 AMAQI
25th Jul 2025363 AMAQI
31°C28/37°C
25th Jul 2025384 AMAQI
25th Jul 2025415 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025408 AMAQI
25th Jul 2025359 AMAQI
25th Jul 20253510 AMAQI
25th Jul 20254111 AMAQI
25th Jul 20255212 PMAQI
25th Jul 2025531 PMAQI
25th Jul 2025532 PMAQI
25th Jul 2025473 PMAQI
25th Jul 2025404 PMAQI
25th Jul 2025375 PMAQI
25th Jul 2025306 PMAQI
25th Jul 2025257 PMAQI
25th Jul 2025298 PMAQI
25th Jul 2025339 PMAQI
25th Jul 20253310 PMAQI
25th Jul 20253211 PMAQI
26th Jul 20253112 AMAQI
26th Jul 2025341 AMAQI
26th Jul 2025382 AMAQI
26th Jul 2025383 AMAQI
32°C29/36°C
26th Jul 2025394 AMAQI
26th Jul 2025415 AMAQI
26th Jul 2025416 AMAQI
26th Jul 2025417 AMAQI
26th Jul 2025408 AMAQI
26th Jul 2025369 AMAQI
26th Jul 20253910 AMAQI
26th Jul 20254911 AMAQI
26th Jul 20255312 PMAQI
26th Jul 2025521 PMAQI
26th Jul 2025512 PMAQI
26th Jul 2025483 PMAQI
26th Jul 2025434 PMAQI
26th Jul 2025385 PMAQI
26th Jul 2025306 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025298 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253710 PMAQI
26th Jul 20253611 PMAQI
27th Jul 20253212 AMAQI
27th Jul 2025341 AMAQI
27th Jul 2025382 AMAQI
27th Jul 2025383 AMAQI
32°C28/36°C
27th Jul 2025394 AMAQI
27th Jul 2025405 AMAQI
27th Jul 2025406 AMAQI
27th Jul 2025407 AMAQI
27th Jul 2025408 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20255210 AMAQI
27th Jul 20255611 AMAQI
27th Jul 20255512 PMAQI
27th Jul 2025531 PMAQI
27th Jul 2025482 PMAQI
27th Jul 2025403 PMAQI
27th Jul 2025324 PMAQI
27th Jul 2025295 PMAQI
27th Jul 2025276 PMAQI
27th Jul 2025237 PMAQI
27th Jul 2025258 PMAQI
27th Jul 2025309 PMAQI
27th Jul 20253010 PMAQI
27th Jul 20253011 PMAQI
28th Jul 20253012 AMAQI
28th Jul 2025331 AMAQI
28th Jul 2025382 AMAQI
28th Jul 2025393 AMAQI
31°C29/36°C
28th Jul 2025394 AMAQI
28th Jul 2025415 AMAQI
28th Jul 2025416 AMAQI
28th Jul 2025417 AMAQI
28th Jul 2025418 AMAQI
28th Jul 2025279 AMAQI
28th Jul 20252910 AMAQI
28th Jul 20253511 AMAQI
28th Jul 20254212 PMAQI
28th Jul 2025441 PMAQI
28th Jul 2025472 PMAQI
28th Jul 2025523 PMAQI
28th Jul 2025554 PMAQI
28th Jul 2025585 PMAQI
28th Jul 2025546 PMAQI
28th Jul 2025507 PMAQI
28th Jul 2025408 PMAQI
28th Jul 2025389 PMAQI
28th Jul 20253610 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253512 AMAQI
29th Jul 2025361 AMAQI
29th Jul 2025392 AMAQI
29th Jul 2025383 AMAQI
32°C28/37°C
29th Jul 2025394 AMAQI
29th Jul 2025395 AMAQI
29th Jul 2025396 AMAQI
29th Jul 2025407 AMAQI
29th Jul 2025388 AMAQI
29th Jul 2025279 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20253611 AMAQI
29th Jul 20254412 PMAQI
29th Jul 2025491 PMAQI
29th Jul 2025502 PMAQI
29th Jul 2025493 PMAQI
29th Jul 2025464 PMAQI
29th Jul 2025375 PMAQI
29th Jul 2025326 PMAQI
29th Jul 2025277 PMAQI
29th Jul 2025288 PMAQI
29th Jul 2025289 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252811 PMAQI
30th Jul 20252712 AMAQI
30th Jul 2025311 AMAQI
30th Jul 2025392 AMAQI
30th Jul 2025383 AMAQI
32°C28/38°C
30th Jul 2025384 AMAQI
30th Jul 2025395 AMAQI
30th Jul 2025396 AMAQI
30th Jul 2025397 AMAQI
30th Jul 2025408 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20252011 AMAQI
30th Jul 20252612 PMAQI
30th Jul 2025271 PMAQI
30th Jul 2025282 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025264 PMAQI
30th Jul 2025255 PMAQI
30th Jul 2025286 PMAQI
30th Jul 2025287 PMAQI
30th Jul 2025338 PMAQI
30th Jul 2025349 PMAQI
30th Jul 20253510 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253312 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025352 AMAQI
31st Jul 2025353 AMAQI
30°C27/36°C
31st Jul 2025354 AMAQI
31st Jul 2025355 AMAQI
31st Jul 2025356 AMAQI
31st Jul 2025357 AMAQI
31st Jul 2025358 AMAQI
31st Jul 2025359 AMAQI
31st Jul 20253510 AMAQI
31st Jul 20253711 AMAQI
31st Jul 20253412 PMAQI
31st Jul 2025321 PMAQI
31st Jul 2025322 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025226 PMAQI
31st Jul 2025217 PMAQI
31st Jul 2025258 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025301 AMAQI
1st Aug 2025342 AMAQI
1st Aug 2025353 AMAQI
29°C26/34°C
1st Aug 2025354 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025376 AMAQI
1st Aug 2025367 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025299 AMAQI
1st Aug 20253210 AMAQI
1st Aug 20253811 AMAQI
1st Aug 20254412 PMAQI
1st Aug 2025341 PMAQI
1st Aug 2025402 PMAQI
1st Aug 2025353 PMAQI
1st Aug 2025444 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025406 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025318 PMAQI
1st Aug 2025299 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025372 AMAQI
2nd Aug 2025373 AMAQI
28°C26/32°C
2nd Aug 2025374 AMAQI
2nd Aug 2025395 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025398 AMAQI
2nd Aug 2025309 AMAQI
2nd Aug 20253310 AMAQI
2nd Aug 20254011 AMAQI
2nd Aug 20254212 PMAQI
2nd Aug 2025471 PMAQI
2nd Aug 2025562 PMAQI
2nd Aug 2025553 PMAQI
2nd Aug 2025524 PMAQI
2nd Aug 2025555 PMAQI
2nd Aug 2025576 PMAQI
2nd Aug 2025547 PMAQI
2nd Aug 2025398 PMAQI
2nd Aug 2025359 PMAQI
2nd Aug 20253410 PMAQI
2nd Aug 20254411 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025351 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
31°C27/37°C
3rd Aug 2025404 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025396 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025459 AMAQI
3rd Aug 20255310 AMAQI
3rd Aug 20255311 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025511 PMAQI
3rd Aug 2025572 PMAQI
3rd Aug 2025533 PMAQI
3rd Aug 2025504 PMAQI
3rd Aug 2025535 PMAQI
3rd Aug 2025516 PMAQI
3rd Aug 2025487 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254110 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20254012 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025383 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 2025609 AMAQI
4th Aug 20256310 AMAQI
4th Aug 20257811 AMAQI
4th Aug 20257412 PMAQI
4th Aug 2025831 PMAQI
4th Aug 2025842 PMAQI
4th Aug 2025783 PMAQI
4th Aug 2025834 PMAQI
4th Aug 2025875 PMAQI
4th Aug 2025826 PMAQI
4th Aug 2025767 PMAQI
4th Aug 2025668 PMAQI
4th Aug 2025599 PMAQI
4th Aug 20255610 PMAQI
4th Aug 20254811 PMAQI
5th Aug 20256212 AMAQI
5th Aug 2025431 AMAQI
5th Aug 2025412 AMAQI
5th Aug 2025403 AMAQI
33°C29/37°C
5th Aug 2025504 AMAQI
5th Aug 2025535 AMAQI
5th Aug 2025536 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025559 AMAQI
5th Aug 20255810 AMAQI
5th Aug 20255811 AMAQI
5th Aug 20256212 PMAQI
5th Aug 2025551 PMAQI
5th Aug 2025522 PMAQI
5th Aug 2025543 PMAQI
5th Aug 2025584 PMAQI
5th Aug 2025505 PMAQI
5th Aug 2025496 PMAQI
5th Aug 2025417 PMAQI
5th Aug 2025468 PMAQI
5th Aug 2025459 PMAQI
5th Aug 20254610 PMAQI
5th Aug 20254611 PMAQI
6th Aug 20254712 AMAQI
6th Aug 2025481 AMAQI
6th Aug 2025492 AMAQI
6th Aug 2025483 AMAQI
34°C30/39°C
6th Aug 2025524 AMAQI
6th Aug 2025525 AMAQI
6th Aug 2025526 AMAQI
6th Aug 2025527 AMAQI
6th Aug 2025528 AMAQI
6th Aug 2025479 AMAQI
6th Aug 20255110 AMAQI
6th Aug 20254711 AMAQI
6th Aug 20255512 PMAQI
6th Aug 2025551 PMAQI
6th Aug 2025572 PMAQI
6th Aug 2025523 PMAQI
6th Aug 2025554 PMAQI
6th Aug 2025585 PMAQI
6th Aug 2025516 PMAQI
6th Aug 2025567 PMAQI
6th Aug 2025548 PMAQI
6th Aug 2025489 PMAQI
6th Aug 20254810 PMAQI
6th Aug 20254611 PMAQI
7th Aug 20254612 AMAQI
7th Aug 2025471 AMAQI
7th Aug 2025512 AMAQI
7th Aug 2025503 AMAQI
33°C29/38°C
7th Aug 2025524 AMAQI
7th Aug 2025515 AMAQI
7th Aug 2025526 AMAQI
7th Aug 2025467 AMAQI
7th Aug 2025508 AMAQI
7th Aug 2025439 AMAQI
7th Aug 20254110 AMAQI
7th Aug 20254411 AMAQI
7th Aug 20253212 PMAQI
7th Aug 2025331 PMAQI
7th Aug 2025292 PMAQI
7th Aug 2025283 PMAQI
7th Aug 2025414 PMAQI
7th Aug 2025505 PMAQI
7th Aug 2025506 PMAQI
7th Aug 2025487 PMAQI
7th Aug 2025498 PMAQI
7th Aug 2025499 PMAQI
7th Aug 20254810 PMAQI
7th Aug 20254811 PMAQI
8th Aug 20254712 AMAQI
8th Aug 2025481 AMAQI
8th Aug 2025502 AMAQI
8th Aug 2025503 AMAQI
31°C28/34°C
8th Aug 2025484 AMAQI
4 AM8th Aug 2025475 AMAQI
8th Aug 2025476 AMAQI
8th Aug 2025477 AMAQI
8th Aug 2025478 AMAQI
8th Aug 2025349 AMAQI
8th Aug 20252810 AMAQI
8th Aug 20252411 AMAQI
11 AM8th Aug 20252612 PMAQI
8th Aug 2025301 PMAQI
8th Aug 2025292 PMAQI
8th Aug 2025343 PMAQI
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
39AQI
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. 39).
Night time
Avg. Highest Time
2 AM - 3 AM
47AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM - 8 PM
39AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 3 AM (Avg. 47), while the lowest AQI was between 7 PM to 8 PM (Avg. 39).
2025 Days Vs Air Quality
Koshigaya, Saitama, Japan
2025
86%
187
14%
31
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Good
187 DaysModerate
31 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 220 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
Koshigaya, 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
35AQI
35AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
26AQI
26AQI
4th January 2025
31AQI
31AQI
5th January 2025
38AQI
38AQI
6th January 2025
57AQI
57AQI
7th January 2025
33AQI
33AQI
8th January 2025
36AQI
36AQI
9th January 2025
35AQI
35AQI
10th January 2025
30AQI
30AQI
11th January 2025
30AQI
30AQI
12th January 2025
46AQI
46AQI
13th January 2025
32AQI
32AQI
14th January 2025
44AQI
44AQI
15th January 2025
40AQI
40AQI
16th January 2025
37AQI
37AQI
17th January 2025
34AQI
34AQI
18th January 2025
37AQI
37AQI
19th January 2025
53AQI
53AQI
20th January 2025
43AQI
43AQI
21st January 2025
46AQI
46AQI
22nd January 2025
43AQI
43AQI
23rd January 2025
53AQI
53AQI
24th January 2025
49AQI
49AQI
25th January 2025
44AQI
44AQI
26th January 2025
36AQI
36AQI
27th January 2025
41AQI
41AQI
28th January 2025
46AQI
46AQI
29th January 2025
34AQI
34AQI
30th January 2025
36AQI
36AQI
31st January 2025
29AQI
29AQI
1st February 2025
47AQI
47AQI
2nd February 2025
37AQI
37AQI
3rd February 2025
44AQI
44AQI
4th February 2025
33AQI
33AQI
5th February 2025
33AQI
33AQI
6th February 2025
28AQI
28AQI
7th February 2025
30AQI
30AQI
8th February 2025
29AQI
29AQI
9th February 2025
29AQI
29AQI
10th February 2025
29AQI
29AQI
11th February 2025
32AQI
32AQI
12th February 2025
45AQI
45AQI
13th February 2025
41AQI
41AQI
14th February 2025
36AQI
36AQI
15th February 2025
38AQI
38AQI
16th February 2025
43AQI
43AQI
17th February 2025
38AQI
38AQI
18th February 2025
34AQI
34AQI
19th February 2025
31AQI
31AQI
20th February 2025
30AQI
30AQI
21st February 2025
30AQI
30AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
31AQI
31AQI
24th February 2025
32AQI
32AQI
25th February 2025
33AQI
33AQI
26th February 2025
40AQI
40AQI
27th February 2025
42AQI
42AQI
28th February 2025
54AQI
54AQI
1st March 2025
52AQI
52AQI
2nd March 2025
63AQI
63AQI
3rd March 2025
40AQI
40AQI
4th March 2025
41AQI
41AQI
5th March 2025
30AQI
30AQI
6th March 2025
35AQI
35AQI
7th March 2025
32AQI
32AQI
8th March 2025
39AQI
39AQI
9th March 2025
36AQI
36AQI
10th March 2025
37AQI
37AQI
11th March 2025
42AQI
42AQI
12th March 2025
48AQI
48AQI
13th March 2025
46AQI
46AQI
14th March 2025
43AQI
43AQI
15th March 2025
41AQI
41AQI
16th March 2025
28AQI
28AQI
17th March 2025
23AQI
23AQI
18th March 2025
27AQI
27AQI
19th March 2025
19AQI
19AQI
20th March 2025
27AQI
27AQI
21st March 2025
43AQI
43AQI
22nd March 2025
54AQI
54AQI
23rd March 2025
58AQI
58AQI
24th March 2025
55AQI
55AQI
25th March 2025
72AQI
72AQI
26th March 2025
75AQI
75AQI
27th March 2025
72AQI
72AQI
28th March 2025
52AQI
52AQI
29th March 2025
39AQI
39AQI
30th March 2025
39AQI
39AQI
31st March 2025
34AQI
34AQI
1st April 2025
30AQI
30AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
22AQI
22AQI
4th April 2025
21AQI
21AQI
5th April 2025
28AQI
28AQI
6th April 2025
25AQI
25AQI
7th April 2025
32AQI
32AQI
8th April 2025
42AQI
42AQI
9th April 2025
29AQI
29AQI
10th April 2025
49AQI
49AQI
11th April 2025
41AQI
41AQI
12th April 2025
42AQI
42AQI
13th April 2025
32AQI
32AQI
14th April 2025
39AQI
39AQI
15th April 2025
31AQI
31AQI
16th April 2025
29AQI
29AQI
17th April 2025
41AQI
41AQI
18th April 2025
51AQI
51AQI
19th April 2025
65AQI
65AQI
20th April 2025
55AQI
55AQI
21st April 2025
49AQI
49AQI
22nd April 2025
49AQI
49AQI
23rd April 2025
34AQI
34AQI
24th April 2025
46AQI
46AQI
25th April 2025
49AQI
49AQI
26th April 2025
50AQI
50AQI
27th April 2025
56AQI
56AQI
28th April 2025
49AQI
49AQI
29th April 2025
37AQI
37AQI
30th April 2025
49AQI
49AQI
1st May 2025
42AQI
42AQI
2nd May 2025
33AQI
33AQI
3rd May 2025
33AQI
33AQI
4th May 2025
39AQI
39AQI
5th May 2025
37AQI
37AQI
6th May 2025
33AQI
33AQI
7th May 2025
27AQI
27AQI
8th May 2025
32AQI
32AQI
9th May 2025
34AQI
34AQI
10th May 2025
24AQI
24AQI
11th May 2025
24AQI
24AQI
12th May 2025
25AQI
25AQI
13th May 2025
36AQI
36AQI
14th May 2025
38AQI
38AQI
15th May 2025
40AQI
40AQI
16th May 2025
47AQI
47AQI
17th May 2025
29AQI
29AQI
18th May 2025
47AQI
47AQI
19th May 2025
45AQI
45AQI
20th May 2025
64AQI
64AQI
21st May 2025
58AQI
58AQI
22nd May 2025
46AQI
46AQI
23rd May 2025
46AQI
46AQI
24th May 2025
45AQI
45AQI
25th May 2025
32AQI
32AQI
26th May 2025
31AQI
31AQI
27th May 2025
26AQI
26AQI
28th May 2025
28AQI
28AQI
29th May 2025
30AQI
30AQI
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
29AQI
29AQI
5th June 2025
42AQI
42AQI
6th June 2025
46AQI
46AQI
7th June 2025
50AQI
50AQI
8th June 2025
59AQI
59AQI
9th June 2025
52AQI
52AQI
10th June 2025
37AQI
37AQI
11th June 2025
33AQI
33AQI
12th June 2025
40AQI
40AQI
13th June 2025
43AQI
43AQI
14th June 2025
38AQI
38AQI
15th June 2025
32AQI
32AQI
16th June 2025
37AQI
37AQI
17th June 2025
47AQI
47AQI
18th June 2025
41AQI
41AQI
19th June 2025
41AQI
41AQI
20th June 2025
41AQI
41AQI
21st June 2025
35AQI
35AQI
22nd June 2025
27AQI
27AQI
23rd June 2025
26AQI
26AQI
24th June 2025
25AQI
25AQI
25th June 2025
20AQI
20AQI
26th June 2025
22AQI
22AQI
27th June 2025
29AQI
29AQI
28th June 2025
30AQI
30AQI
29th June 2025
36AQI
36AQI
30th June 2025
41AQI
41AQI
1st July 2025
41AQI
41AQI
2nd July 2025
45AQI
45AQI
3rd July 2025
46AQI
46AQI
4th July 2025
47AQI
47AQI
5th July 2025
49AQI
49AQI
6th July 2025
60AQI
60AQI
7th July 2025
74AQI
74AQI
8th July 2025
75AQI
75AQI
9th July 2025
82AQI
82AQI
10th July 2025
65AQI
65AQI
11th July 2025
51AQI
51AQI
12th July 2025
54AQI
54AQI
13th July 2025
53AQI
53AQI
14th July 2025
43AQI
43AQI
15th July 2025
42AQI
42AQI
16th July 2025
43AQI
43AQI
17th July 2025
42AQI
42AQI
18th July 2025
38AQI
38AQI
19th July 2025
35AQI
35AQI
20th July 2025
34AQI
34AQI
21st July 2025
36AQI
36AQI
22nd July 2025
38AQI
38AQI
23rd July 2025
39AQI
39AQI
24th July 2025
41AQI
41AQI
25th July 2025
37AQI
37AQI
26th July 2025
38AQI
38AQI
27th July 2025
37AQI
37AQI
28th July 2025
41AQI
41AQI
29th July 2025
36AQI
36AQI
30th July 2025
31AQI
31AQI
31st July 2025
31AQI
31AQI
1st August 2025
34AQI
34AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
45AQI
45AQI
4th August 2025
59AQI
59AQI
5th August 2025
50AQI
50AQI
6th August 2025
51AQI
51AQI
39AQI
36AQI
43AQI
40AQI
36AQI
36AQI
46AQI
47AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202540AQI
28
3
27
1
22
9
26
4
29
2
28
2
23
8
4
2
187
31
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
February36AQI
202439AQI
27
4
26
3
23
8
17
13
26
5
27
3
19
12
30
1
28
2
27
4
28
2
29
2
307
59
Highest AQI recorded in
April50AQI
Lowest AQI recorded in
August30AQI
202343AQI
23
8
21
7
24
7
19
11
25
6
20
10
19
12
29
2
29
1
27
4
20
9
21
10
277
87
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August32AQI
202242AQI
25
6
16
5
22
9
19
11
23
8
20
10
17
7
1
27
1
25
6
22
8
28
3
245
74
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August24AQI
202140AQI
22
9
23
5
24
6
1
29
1
25
6
25
5
29
2
27
4
28
2
28
3
22
8
22
9
304
60
1
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
February30AQI
202038AQI
11
2
18
3
18
25
5
30
1
22
9
19
26
5
20
10
24
7
213
42
Highest AQI recorded in
November45AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
43AQILeast Polluted Year Recorded
2020(Avg.)
38AQIKoshigaya's annual 2025 AQI (40) shows an average percentage change of -1.04% (improved AQI) compared to previous years: 2020 (38), 2021 (40), 2022 (42), 2023 (43), 2024 (39).
