Niikura, Niiza, 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
Niikura, Niiza, Saitama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
20th Oct 2023
66AQILowest AQI recorded on
13th Oct 2021
16AQISame Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Niikura, Niiza, Saitama, Japan
AQI
Day
Night
.
5 AM18th Oct 2025
5 PM
4 AM19th Oct 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
11AM18th Oct
61AQI
Avg. Lowest Time
9PM18th Oct
40AQI
In the last 24 hours,
Niikura's AQI reached its highest point of 61 at 11 AM during the Night, while the lowest point, 40, was recorded at 9 PM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Niikura, Niiza, Saitama, Japan
SepOct
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th
Day
Night
19th Sep 2025535 AMAQI
19th Sep 2025536 AMAQI
19th Sep 2025537 AMAQI
19th Sep 2025538 AMAQI
19th Sep 2025279 AMAQI
19th Sep 20251910 AMAQI
19th Sep 20252111 AMAQI
19th Sep 20252212 PMAQI
19th Sep 2025311 PMAQI
19th Sep 2025272 PMAQI
19th Sep 2025323 PMAQI
19th Sep 2025334 PMAQI
19th Sep 2025335 PMAQI
19th Sep 2025316 PMAQI
19th Sep 2025297 PMAQI
19th Sep 2025328 PMAQI
19th Sep 2025369 PMAQI
19th Sep 20253610 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20253712 AMAQI
20th Sep 2025401 AMAQI
20th Sep 2025452 AMAQI
20th Sep 2025453 AMAQI
20th Sep 2025444 AMAQI
23°C22/23°C
20th Sep 2025405 AMAQI
20th Sep 2025406 AMAQI
20th Sep 2025407 AMAQI
20th Sep 2025408 AMAQI
20th Sep 2025289 AMAQI
20th Sep 20252110 AMAQI
20th Sep 20252611 AMAQI
20th Sep 20252112 PMAQI
20th Sep 2025301 PMAQI
20th Sep 2025342 PMAQI
20th Sep 2025363 PMAQI
20th Sep 2025384 PMAQI
20th Sep 2025345 PMAQI
20th Sep 2025356 PMAQI
20th Sep 2025367 PMAQI
20th Sep 2025368 PMAQI
20th Sep 2025409 PMAQI
20th Sep 20254010 PMAQI
20th Sep 20253911 PMAQI
21st Sep 20254012 AMAQI
21st Sep 2025411 AMAQI
21st Sep 2025412 AMAQI
21st Sep 2025413 AMAQI
21st Sep 2025404 AMAQI
24°C23/26°C
21st Sep 2025385 AMAQI
21st Sep 2025386 AMAQI
21st Sep 2025387 AMAQI
21st Sep 2025388 AMAQI
21st Sep 2025249 AMAQI
21st Sep 20251310 AMAQI
21st Sep 20251211 AMAQI
21st Sep 20251712 PMAQI
21st Sep 2025201 PMAQI
21st Sep 2025202 PMAQI
21st Sep 2025193 PMAQI
21st Sep 2025204 PMAQI
21st Sep 2025225 PMAQI
21st Sep 2025226 PMAQI
21st Sep 2025227 PMAQI
21st Sep 2025268 PMAQI
21st Sep 2025349 PMAQI
21st Sep 20253410 PMAQI
21st Sep 20253511 PMAQI
22nd Sep 20253412 AMAQI
22nd Sep 2025371 AMAQI
22nd Sep 2025402 AMAQI
22nd Sep 2025403 AMAQI
22nd Sep 2025394 AMAQI
27°C23/32°C
22nd Sep 2025375 AMAQI
22nd Sep 2025376 AMAQI
22nd Sep 2025377 AMAQI
22nd Sep 2025378 AMAQI
22nd Sep 2025329 AMAQI
22nd Sep 20251810 AMAQI
22nd Sep 20252111 AMAQI
22nd Sep 20252612 PMAQI
22nd Sep 2025281 PMAQI
22nd Sep 2025292 PMAQI
22nd Sep 2025283 PMAQI
22nd Sep 2025304 PMAQI
22nd Sep 2025285 PMAQI
22nd Sep 2025286 PMAQI
22nd Sep 2025277 PMAQI
22nd Sep 2025288 PMAQI
22nd Sep 2025329 PMAQI
22nd Sep 20253210 PMAQI
22nd Sep 20253211 PMAQI
23rd Sep 20253212 AMAQI
23rd Sep 2025331 AMAQI
23rd Sep 2025362 AMAQI
23rd Sep 2025363 AMAQI
23rd Sep 2025354 AMAQI
24°C22/27°C
23rd Sep 2025345 AMAQI
23rd Sep 2025346 AMAQI
23rd Sep 2025347 AMAQI
23rd Sep 2025338 AMAQI
23rd Sep 2025289 AMAQI
23rd Sep 20252210 AMAQI
23rd Sep 20252111 AMAQI
23rd Sep 20253012 PMAQI
23rd Sep 2025261 PMAQI
23rd Sep 2025272 PMAQI
23rd Sep 2025273 PMAQI
23rd Sep 2025304 PMAQI
23rd Sep 2025305 PMAQI
23rd Sep 2025326 PMAQI
23rd Sep 2025287 PMAQI
23rd Sep 2025278 PMAQI
23rd Sep 2025319 PMAQI
23rd Sep 20253110 PMAQI
23rd Sep 20253011 PMAQI
24th Sep 20253012 AMAQI
24th Sep 2025321 AMAQI
24th Sep 2025332 AMAQI
24th Sep 2025333 AMAQI
24th Sep 2025324 AMAQI
24°C21/27°C
24th Sep 2025325 AMAQI
24th Sep 2025326 AMAQI
24th Sep 2025327 AMAQI
24th Sep 2025328 AMAQI
24th Sep 2025399 AMAQI
24th Sep 20253710 AMAQI
24th Sep 20252511 AMAQI
24th Sep 20253412 PMAQI
24th Sep 2025321 PMAQI
24th Sep 2025342 PMAQI
24th Sep 2025343 PMAQI
24th Sep 2025344 PMAQI
24th Sep 2025305 PMAQI
24th Sep 2025316 PMAQI
24th Sep 2025277 PMAQI
24th Sep 2025278 PMAQI
24th Sep 2025309 PMAQI
24th Sep 20252910 PMAQI
24th Sep 20252811 PMAQI
25th Sep 20252912 AMAQI
25th Sep 2025291 AMAQI
25th Sep 2025302 AMAQI
25th Sep 2025303 AMAQI
25th Sep 2025314 AMAQI
24°C21/28°C
25th Sep 2025325 AMAQI
25th Sep 2025326 AMAQI
25th Sep 2025327 AMAQI
25th Sep 2025328 AMAQI
25th Sep 2025389 AMAQI
25th Sep 20253010 AMAQI
25th Sep 20253611 AMAQI
25th Sep 20253312 PMAQI
25th Sep 2025311 PMAQI
25th Sep 2025352 PMAQI
25th Sep 2025453 PMAQI
25th Sep 2025414 PMAQI
25th Sep 2025375 PMAQI
25th Sep 2025346 PMAQI
25th Sep 2025397 PMAQI
25th Sep 2025408 PMAQI
25th Sep 2025399 PMAQI
25th Sep 20253510 PMAQI
25th Sep 20253411 PMAQI
26th Sep 20253512 AMAQI
26th Sep 2025421 AMAQI
26th Sep 2025452 AMAQI
26th Sep 2025453 AMAQI
26th Sep 2025524 AMAQI
25°C23/29°C
26th Sep 2025565 AMAQI
26th Sep 2025586 AMAQI
26th Sep 2025607 AMAQI
26th Sep 2025648 AMAQI
26th Sep 2025569 AMAQI
26th Sep 20255410 AMAQI
26th Sep 20255711 AMAQI
26th Sep 20255912 PMAQI
26th Sep 2025671 PMAQI
26th Sep 2025742 PMAQI
26th Sep 2025653 PMAQI
26th Sep 2025674 PMAQI
26th Sep 2025755 PMAQI
26th Sep 2025786 PMAQI
26th Sep 2025777 PMAQI
26th Sep 2025618 PMAQI
26th Sep 2025569 PMAQI
26th Sep 20255910 PMAQI
26th Sep 20255211 PMAQI
27th Sep 20255012 AMAQI
27th Sep 2025461 AMAQI
27th Sep 2025392 AMAQI
27th Sep 2025293 AMAQI
27th Sep 2025344 AMAQI
28°C25/33°C
27th Sep 2025385 AMAQI
27th Sep 2025396 AMAQI
27th Sep 2025397 AMAQI
27th Sep 2025398 AMAQI
27th Sep 2025399 AMAQI
27th Sep 20253910 AMAQI
27th Sep 20253911 AMAQI
27th Sep 20253912 PMAQI
27th Sep 2025401 PMAQI
27th Sep 2025392 PMAQI
27th Sep 2025393 PMAQI
27th Sep 2025404 PMAQI
27th Sep 2025415 PMAQI
27th Sep 2025336 PMAQI
27th Sep 2025337 PMAQI
27th Sep 2025338 PMAQI
27th Sep 2025389 PMAQI
27th Sep 20253610 PMAQI
27th Sep 20252811 PMAQI
28th Sep 20252812 AMAQI
28th Sep 2025341 AMAQI
28th Sep 2025392 AMAQI
28th Sep 2025393 AMAQI
28th Sep 2025364 AMAQI
26°C24/28°C
28th Sep 2025405 AMAQI
28th Sep 2025426 AMAQI
28th Sep 2025437 AMAQI
28th Sep 2025448 AMAQI
28th Sep 2025429 AMAQI
28th Sep 20253910 AMAQI
28th Sep 20254411 AMAQI
28th Sep 20254112 PMAQI
28th Sep 2025361 PMAQI
28th Sep 2025322 PMAQI
28th Sep 2025343 PMAQI
28th Sep 2025334 PMAQI
28th Sep 2025285 PMAQI
28th Sep 2025326 PMAQI
28th Sep 2025317 PMAQI
28th Sep 2025308 PMAQI
28th Sep 2025339 PMAQI
28th Sep 20252810 PMAQI
28th Sep 20253811 PMAQI
29th Sep 20253912 AMAQI
29th Sep 2025391 AMAQI
29th Sep 2025342 AMAQI
29th Sep 2025233 AMAQI
29th Sep 2025224 AMAQI
26°C24/28°C
29th Sep 2025235 AMAQI
29th Sep 2025296 AMAQI
29th Sep 2025357 AMAQI
29th Sep 2025398 AMAQI
29th Sep 2025499 AMAQI
29th Sep 20254310 AMAQI
29th Sep 20253811 AMAQI
29th Sep 20253712 PMAQI
29th Sep 2025491 PMAQI
29th Sep 2025502 PMAQI
29th Sep 2025453 PMAQI
29th Sep 2025414 PMAQI
29th Sep 2025335 PMAQI
29th Sep 2025296 PMAQI
29th Sep 2025227 PMAQI
29th Sep 2025228 PMAQI
29th Sep 2025219 PMAQI
29th Sep 20251210 PMAQI
29th Sep 20251511 PMAQI
30th Sep 20251612 AMAQI
30th Sep 2025211 AMAQI
30th Sep 2025212 AMAQI
30th Sep 2025253 AMAQI
30th Sep 2025244 AMAQI
27°C25/32°C
30th Sep 2025175 AMAQI
30th Sep 2025136 AMAQI
30th Sep 2025137 AMAQI
30th Sep 2025138 AMAQI
30th Sep 2025259 AMAQI
30th Sep 20252610 AMAQI
30th Sep 20252811 AMAQI
30th Sep 20253112 PMAQI
30th Sep 2025391 PMAQI
30th Sep 2025402 PMAQI
30th Sep 2025393 PMAQI
30th Sep 2025384 PMAQI
30th Sep 2025375 PMAQI
30th Sep 2025366 PMAQI
30th Sep 2025397 PMAQI
30th Sep 2025388 PMAQI
30th Sep 2025409 PMAQI
30th Sep 20252810 PMAQI
30th Sep 20253211 PMAQI
1st Oct 20252812 AMAQI
1st Oct 2025361 AMAQI
1st Oct 2025412 AMAQI
1st Oct 2025453 AMAQI
1st Oct 2025424 AMAQI
25°C23/27°C
1st Oct 2025495 AMAQI
1st Oct 2025446 AMAQI
1st Oct 2025457 AMAQI
1st Oct 2025468 AMAQI
1st Oct 2025489 AMAQI
1st Oct 20255210 AMAQI
1st Oct 20254811 AMAQI
1st Oct 20254012 PMAQI
1st Oct 2025371 PMAQI
1st Oct 2025392 PMAQI
1st Oct 2025413 PMAQI
1st Oct 2025404 PMAQI
1st Oct 2025415 PMAQI
1st Oct 2025406 PMAQI
1st Oct 2025387 PMAQI
1st Oct 2025368 PMAQI
1st Oct 2025319 PMAQI
1st Oct 20253310 PMAQI
1st Oct 20253611 PMAQI
2nd Oct 20253012 AMAQI
2nd Oct 2025331 AMAQI
2nd Oct 2025442 AMAQI
2nd Oct 2025463 AMAQI
2nd Oct 2025464 AMAQI
21°C20/21°C
2nd Oct 2025485 AMAQI
2nd Oct 2025486 AMAQI
2nd Oct 2025337 AMAQI
2nd Oct 2025388 AMAQI
2nd Oct 2025359 AMAQI
2nd Oct 20254410 AMAQI
2nd Oct 20253811 AMAQI
2nd Oct 20253812 PMAQI
2nd Oct 2025431 PMAQI
2nd Oct 2025452 PMAQI
2nd Oct 2025453 PMAQI
2nd Oct 2025464 PMAQI
2nd Oct 2025385 PMAQI
2nd Oct 2025346 PMAQI
2nd Oct 2025457 PMAQI
2nd Oct 2025458 PMAQI
2nd Oct 2025559 PMAQI
2nd Oct 20254510 PMAQI
2nd Oct 20254411 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025521 AMAQI
3rd Oct 2025472 AMAQI
3rd Oct 2025503 AMAQI
3rd Oct 2025534 AMAQI
24°C20/28°C
3rd Oct 2025495 AMAQI
3rd Oct 2025436 AMAQI
3rd Oct 2025377 AMAQI
3rd Oct 2025378 AMAQI
3rd Oct 2025389 AMAQI
3rd Oct 20254510 AMAQI
3rd Oct 20254211 AMAQI
3rd Oct 20254312 PMAQI
3rd Oct 2025491 PMAQI
3rd Oct 2025452 PMAQI
3rd Oct 2025473 PMAQI
3rd Oct 2025474 PMAQI
3rd Oct 2025515 PMAQI
3rd Oct 2025516 PMAQI
3rd Oct 2025507 PMAQI
3rd Oct 2025438 PMAQI
3rd Oct 2025649 PMAQI
3rd Oct 20256210 PMAQI
3rd Oct 20255711 PMAQI
4th Oct 20255812 AMAQI
4th Oct 2025591 AMAQI
4th Oct 2025572 AMAQI
4th Oct 2025613 AMAQI
4th Oct 2025584 AMAQI
24°C22/27°C
4th Oct 2025705 AMAQI
4th Oct 2025696 AMAQI
4th Oct 2025697 AMAQI
4th Oct 2025678 AMAQI
4th Oct 2025689 AMAQI
4th Oct 20257010 AMAQI
4th Oct 20256711 AMAQI
4th Oct 20256912 PMAQI
4th Oct 2025641 PMAQI
4th Oct 2025592 PMAQI
4th Oct 2025623 PMAQI
4th Oct 2025634 PMAQI
4th Oct 2025635 PMAQI
4th Oct 2025596 PMAQI
4th Oct 2025607 PMAQI
4th Oct 2025608 PMAQI
4th Oct 2025599 PMAQI
4th Oct 20255810 PMAQI
4th Oct 20256111 PMAQI
5th Oct 20255812 AMAQI
5th Oct 2025591 AMAQI
5th Oct 2025572 AMAQI
5th Oct 2025603 AMAQI
5th Oct 2025604 AMAQI
24°C23/26°C
5th Oct 2025595 AMAQI
5th Oct 2025566 AMAQI
5th Oct 2025577 AMAQI
5th Oct 2025468 AMAQI
5th Oct 2025529 AMAQI
5th Oct 20255810 AMAQI
5th Oct 20256211 AMAQI
5th Oct 20256012 PMAQI
5th Oct 2025561 PMAQI
5th Oct 2025562 PMAQI
5th Oct 2025553 PMAQI
5th Oct 2025574 PMAQI
5th Oct 2025575 PMAQI
5th Oct 2025556 PMAQI
5th Oct 2025567 PMAQI
5th Oct 2025568 PMAQI
5th Oct 2025539 PMAQI
5th Oct 20255010 PMAQI
5th Oct 20254611 PMAQI
6th Oct 20255212 AMAQI
6th Oct 2025551 AMAQI
6th Oct 2025552 AMAQI
6th Oct 2025443 AMAQI
6th Oct 2025384 AMAQI
25°C22/28°C
6th Oct 2025395 AMAQI
6th Oct 2025526 AMAQI
6th Oct 2025557 AMAQI
6th Oct 2025558 AMAQI
6th Oct 2025569 AMAQI
6th Oct 20255810 AMAQI
6th Oct 20255911 AMAQI
6th Oct 20255612 PMAQI
6th Oct 2025551 PMAQI
6th Oct 2025622 PMAQI
6th Oct 2025523 PMAQI
6th Oct 2025484 PMAQI
6th Oct 2025515 PMAQI
6th Oct 2025526 PMAQI
6th Oct 2025547 PMAQI
6th Oct 2025558 PMAQI
6th Oct 2025579 PMAQI
6th Oct 20255710 PMAQI
6th Oct 20255611 PMAQI
7th Oct 20255312 AMAQI
7th Oct 2025591 AMAQI
7th Oct 2025612 AMAQI
25°C21/29°C
7th Oct 2025518 PMAQI
7th Oct 2025349 PMAQI
7th Oct 20255810 PMAQI
7th Oct 20256511 PMAQI
8th Oct 20256212 AMAQI
8th Oct 2025591 AMAQI
8th Oct 2025562 AMAQI
8th Oct 2025493 AMAQI
8th Oct 2025534 AMAQI
22°C21/22°C
8th Oct 2025545 AMAQI
8th Oct 2025536 AMAQI
8th Oct 2025517 AMAQI
8th Oct 2025598 AMAQI
8th Oct 2025549 AMAQI
8th Oct 20255310 AMAQI
8th Oct 20255211 AMAQI
8th Oct 20256012 PMAQI
8th Oct 2025631 PMAQI
8th Oct 2025592 PMAQI
8th Oct 2025613 PMAQI
8th Oct 2025604 PMAQI
8th Oct 2025605 PMAQI
8th Oct 2025666 PMAQI
8th Oct 2025647 PMAQI
8th Oct 2025658 PMAQI
8th Oct 2025669 PMAQI
8th Oct 20256510 PMAQI
8th Oct 20256611 PMAQI
9th Oct 20256412 AMAQI
9th Oct 2025661 AMAQI
9th Oct 2025642 AMAQI
9th Oct 2025623 AMAQI
9th Oct 2025644 AMAQI
25°C21/29°C
9th Oct 2025645 AMAQI
9th Oct 2025646 AMAQI
9th Oct 2025597 AMAQI
9th Oct 2025548 AMAQI
9th Oct 2025549 AMAQI
9th Oct 20255510 AMAQI
9th Oct 20255511 AMAQI
9th Oct 20255512 PMAQI
9th Oct 2025471 PMAQI
9th Oct 2025542 PMAQI
9th Oct 2025533 PMAQI
9th Oct 2025514 PMAQI
9th Oct 2025525 PMAQI
9th Oct 2025556 PMAQI
9th Oct 2025577 PMAQI
9th Oct 2025568 PMAQI
9th Oct 2025489 PMAQI
9th Oct 20253110 PMAQI
9th Oct 20253911 PMAQI
10th Oct 20255112 AMAQI
10th Oct 2025491 AMAQI
10th Oct 2025442 AMAQI
10th Oct 2025513 AMAQI
10th Oct 2025534 AMAQI
22°C19/23°C
10th Oct 2025545 AMAQI
10th Oct 2025436 AMAQI
10th Oct 2025517 AMAQI
10th Oct 2025528 AMAQI
10th Oct 2025569 AMAQI
10th Oct 20255710 AMAQI
10th Oct 20255911 AMAQI
10th Oct 20255612 PMAQI
10th Oct 2025561 PMAQI
10th Oct 2025642 PMAQI
10th Oct 2025533 PMAQI
10th Oct 2025504 PMAQI
10th Oct 2025495 PMAQI
10th Oct 2025506 PMAQI
10th Oct 2025567 PMAQI
10th Oct 2025658 PMAQI
10th Oct 2025659 PMAQI
10th Oct 20256610 PMAQI
10th Oct 20256011 PMAQI
11th Oct 20256512 AMAQI
11th Oct 2025621 AMAQI
11th Oct 2025592 AMAQI
11th Oct 2025613 AMAQI
11th Oct 2025594 AMAQI
21°C19/24°C
11th Oct 2025635 AMAQI
11th Oct 2025666 AMAQI
11th Oct 2025637 AMAQI
11th Oct 2025618 AMAQI
11th Oct 2025609 AMAQI
11th Oct 20256010 AMAQI
11th Oct 20256011 AMAQI
11th Oct 20255712 PMAQI
11th Oct 2025601 PMAQI
11th Oct 2025592 PMAQI
11th Oct 2025503 PMAQI
11th Oct 2025484 PMAQI
11th Oct 2025455 PMAQI
11th Oct 2025306 PMAQI
11th Oct 2025377 PMAQI
11th Oct 2025378 PMAQI
11th Oct 2025449 PMAQI
11th Oct 20255410 PMAQI
11th Oct 20253911 PMAQI
12th Oct 20252712 AMAQI
12th Oct 2025381 AMAQI
12th Oct 2025412 AMAQI
12th Oct 2025413 AMAQI
12th Oct 2025464 AMAQI
20°C18/21°C
12th Oct 2025445 AMAQI
12th Oct 2025466 AMAQI
12th Oct 2025487 AMAQI
12th Oct 2025478 AMAQI
12th Oct 2025489 AMAQI
12th Oct 20253110 AMAQI
12th Oct 20252711 AMAQI
12th Oct 20254412 PMAQI
12th Oct 2025491 PMAQI
12th Oct 2025502 PMAQI
12th Oct 2025523 PMAQI
12th Oct 2025504 PMAQI
12th Oct 2025535 PMAQI
12th Oct 2025556 PMAQI
12th Oct 2025567 PMAQI
12th Oct 2025568 PMAQI
12th Oct 2025559 PMAQI
12th Oct 20255610 PMAQI
12th Oct 20255811 PMAQI
13th Oct 20256112 AMAQI
13th Oct 2025621 AMAQI
13th Oct 2025642 AMAQI
13th Oct 2025623 AMAQI
13th Oct 2025654 AMAQI
22°C18/25°C
13th Oct 2025585 AMAQI
13th Oct 2025566 AMAQI
13th Oct 2025577 AMAQI
13th Oct 2025568 AMAQI
13th Oct 2025569 AMAQI
13th Oct 20255610 AMAQI
13th Oct 20255711 AMAQI
13th Oct 20255912 PMAQI
13th Oct 2025541 PMAQI
13th Oct 2025492 PMAQI
13th Oct 2025543 PMAQI
13th Oct 2025524 PMAQI
13th Oct 2025515 PMAQI
13th Oct 2025596 PMAQI
13th Oct 2025587 PMAQI
13th Oct 2025568 PMAQI
13th Oct 2025569 PMAQI
13th Oct 20255710 PMAQI
13th Oct 20255611 PMAQI
14th Oct 20254612 AMAQI
14th Oct 2025471 AMAQI
14th Oct 2025452 AMAQI
14th Oct 2025463 AMAQI
14th Oct 2025504 AMAQI
23°C21/25°C
14th Oct 2025515 AMAQI
14th Oct 2025516 AMAQI
14th Oct 2025547 AMAQI
14th Oct 2025588 AMAQI
14th Oct 2025569 AMAQI
14th Oct 20255510 AMAQI
14th Oct 20255411 AMAQI
14th Oct 20255412 PMAQI
14th Oct 2025561 PMAQI
14th Oct 2025542 PMAQI
14th Oct 2025543 PMAQI
14th Oct 2025554 PMAQI
14th Oct 2025555 PMAQI
14th Oct 2025576 PMAQI
14th Oct 2025567 PMAQI
14th Oct 2025628 PMAQI
14th Oct 2025599 PMAQI
14th Oct 20255910 PMAQI
14th Oct 20255911 PMAQI
15th Oct 20255912 AMAQI
15th Oct 2025561 AMAQI
15th Oct 2025562 AMAQI
15th Oct 2025553 AMAQI
15th Oct 2025584 AMAQI
19°C17/21°C
15th Oct 2025535 AMAQI
15th Oct 2025466 AMAQI
15th Oct 2025427 AMAQI
15th Oct 2025368 AMAQI
15th Oct 2025369 AMAQI
15th Oct 20253410 AMAQI
15th Oct 20254611 AMAQI
15th Oct 20255112 PMAQI
15th Oct 2025491 PMAQI
15th Oct 2025402 PMAQI
15th Oct 2025393 PMAQI
15th Oct 2025444 PMAQI
15th Oct 2025505 PMAQI
15th Oct 2025506 PMAQI
15th Oct 2025537 PMAQI
15th Oct 2025548 PMAQI
15th Oct 2025569 PMAQI
15th Oct 20255010 PMAQI
15th Oct 20255211 PMAQI
16th Oct 20255212 AMAQI
16th Oct 2025511 AMAQI
16th Oct 2025542 AMAQI
16th Oct 2025553 AMAQI
16th Oct 2025604 AMAQI
19°C17/21°C
16th Oct 2025585 AMAQI
16th Oct 2025566 AMAQI
16th Oct 2025507 AMAQI
16th Oct 2025548 AMAQI
16th Oct 2025509 AMAQI
16th Oct 20255610 AMAQI
16th Oct 20255711 AMAQI
16th Oct 20255712 PMAQI
16th Oct 2025541 PMAQI
16th Oct 2025542 PMAQI
16th Oct 2025603 PMAQI
16th Oct 2025594 PMAQI
16th Oct 2025595 PMAQI
16th Oct 2025616 PMAQI
16th Oct 2025667 PMAQI
16th Oct 2025698 PMAQI
16th Oct 2025659 PMAQI
16th Oct 20256410 PMAQI
16th Oct 20256711 PMAQI
17th Oct 20256512 AMAQI
17th Oct 2025591 AMAQI
17th Oct 2025582 AMAQI
17th Oct 2025563 AMAQI
17th Oct 2025564 AMAQI
20°C18/22°C
17th Oct 2025565 AMAQI
17th Oct 2025566 AMAQI
17th Oct 2025577 AMAQI
17th Oct 2025578 AMAQI
17th Oct 2025469 AMAQI
17th Oct 20254710 AMAQI
17th Oct 20255011 AMAQI
17th Oct 20255112 PMAQI
17th Oct 2025601 PMAQI
17th Oct 2025562 PMAQI
17th Oct 2025533 PMAQI
17th Oct 2025554 PMAQI
17th Oct 2025535 PMAQI
17th Oct 2025586 PMAQI
17th Oct 2025477 PMAQI
17th Oct 2025508 PMAQI
17th Oct 2025469 PMAQI
17th Oct 20254310 PMAQI
17th Oct 20254811 PMAQI
18th Oct 20255212 AMAQI
18th Oct 2025541 AMAQI
18th Oct 2025552 AMAQI
18th Oct 2025543 AMAQI
18th Oct 2025544 AMAQI
22°C19/26°C
18th Oct 2025535 AMAQI
18th Oct 2025546 AMAQI
18th Oct 2025527 AMAQI
18th Oct 2025558 AMAQI
18th Oct 2025569 AMAQI
18th Oct 20255910 AMAQI
18th Oct 20256111 AMAQI
18th Oct 20256012 PMAQI
18th Oct 2025561 PMAQI
18th Oct 2025562 PMAQI
18th Oct 2025563 PMAQI
18th Oct 2025564 PMAQI
18th Oct 2025535 PMAQI
18th Oct 2025456 PMAQI
18th Oct 2025417 PMAQI
18th Oct 2025448 PMAQI
18th Oct 2025409 PMAQI
18th Oct 20254410 PMAQI
18th Oct 20254611 PMAQI
19th Oct 20255512 AMAQI
19th Oct 2025571 AMAQI
19th Oct 2025562 AMAQI
19th Oct 2025573 AMAQI
19th Oct 2025574 AMAQI
--°C/°C
19th Oct 2025585 AMAQI
5 AM19th Oct 2025606 AMAQI
11 AM
5 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 9 AM
46AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
10 AM - 5 PM
45AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 AM (Avg. 46), while the lowest AQI was between 10 AM to 5 PM (Avg. 45).
Night time
Avg. Highest Time
1 AM - 4 AM
47AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM
45AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 47), while the lowest AQI was between 12 AM to 12 AM (Avg. 45).
2025 Days Vs Air Quality
Niikura, Niiza, Saitama, Japan
2025
83%
242
17%
49
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Good
242 DaysModerate
49 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 291 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
Niikura, Niiza, 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
33AQI
33AQI
2nd January 2025
34AQI
34AQI
3rd January 2025
25AQI
25AQI
4th January 2025
28AQI
28AQI
5th January 2025
38AQI
38AQI
6th January 2025
52AQI
52AQI
7th January 2025
33AQI
33AQI
8th January 2025
37AQI
37AQI
9th January 2025
31AQI
31AQI
10th January 2025
29AQI
29AQI
11th January 2025
30AQI
30AQI
12th January 2025
42AQI
42AQI
13th January 2025
32AQI
32AQI
14th January 2025
42AQI
42AQI
15th January 2025
39AQI
39AQI
16th January 2025
34AQI
34AQI
17th January 2025
32AQI
32AQI
18th January 2025
35AQI
35AQI
19th January 2025
50AQI
50AQI
20th January 2025
44AQI
44AQI
21st January 2025
45AQI
45AQI
22nd January 2025
41AQI
41AQI
23rd January 2025
52AQI
52AQI
24th January 2025
48AQI
48AQI
25th January 2025
40AQI
40AQI
26th January 2025
37AQI
37AQI
27th January 2025
38AQI
38AQI
28th January 2025
43AQI
43AQI
29th January 2025
32AQI
32AQI
30th January 2025
34AQI
34AQI
31st January 2025
30AQI
30AQI
1st February 2025
47AQI
47AQI
2nd February 2025
37AQI
37AQI
3rd February 2025
46AQI
46AQI
4th February 2025
34AQI
34AQI
5th February 2025
34AQI
34AQI
6th February 2025
28AQI
28AQI
7th February 2025
30AQI
30AQI
8th February 2025
29AQI
29AQI
9th February 2025
29AQI
29AQI
10th February 2025
27AQI
27AQI
11th February 2025
31AQI
31AQI
12th February 2025
41AQI
41AQI
13th February 2025
42AQI
42AQI
14th February 2025
33AQI
33AQI
15th February 2025
42AQI
42AQI
16th February 2025
43AQI
43AQI
17th February 2025
41AQI
41AQI
18th February 2025
34AQI
34AQI
19th February 2025
32AQI
32AQI
20th February 2025
29AQI
29AQI
21st February 2025
31AQI
31AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
31AQI
31AQI
24th February 2025
33AQI
33AQI
25th February 2025
35AQI
35AQI
26th February 2025
38AQI
38AQI
27th February 2025
42AQI
42AQI
28th February 2025
56AQI
56AQI
1st March 2025
56AQI
56AQI
2nd March 2025
62AQI
62AQI
3rd March 2025
39AQI
39AQI
4th March 2025
39AQI
39AQI
5th March 2025
28AQI
28AQI
6th March 2025
35AQI
35AQI
7th March 2025
31AQI
31AQI
8th March 2025
39AQI
39AQI
9th March 2025
37AQI
37AQI
10th March 2025
37AQI
37AQI
11th March 2025
39AQI
39AQI
12th March 2025
50AQI
50AQI
13th March 2025
47AQI
47AQI
14th March 2025
43AQI
43AQI
15th March 2025
40AQI
40AQI
16th March 2025
28AQI
28AQI
17th March 2025
22AQI
22AQI
18th March 2025
26AQI
26AQI
19th March 2025
18AQI
18AQI
20th March 2025
26AQI
26AQI
21st March 2025
42AQI
42AQI
22nd March 2025
53AQI
53AQI
23rd March 2025
58AQI
58AQI
24th March 2025
59AQI
59AQI
25th March 2025
75AQI
75AQI
26th March 2025
78AQI
78AQI
27th March 2025
73AQI
73AQI
28th March 2025
50AQI
50AQI
29th March 2025
37AQI
37AQI
30th March 2025
41AQI
41AQI
31st March 2025
33AQI
33AQI
1st April 2025
30AQI
30AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
24AQI
24AQI
4th April 2025
24AQI
24AQI
5th April 2025
29AQI
29AQI
6th April 2025
25AQI
25AQI
7th April 2025
32AQI
32AQI
8th April 2025
40AQI
40AQI
9th April 2025
30AQI
30AQI
10th April 2025
49AQI
49AQI
11th April 2025
42AQI
42AQI
12th April 2025
43AQI
43AQI
13th April 2025
36AQI
36AQI
14th April 2025
41AQI
41AQI
15th April 2025
33AQI
33AQI
16th April 2025
32AQI
32AQI
17th April 2025
48AQI
48AQI
18th April 2025
55AQI
55AQI
19th April 2025
66AQI
66AQI
20th April 2025
55AQI
55AQI
21st April 2025
50AQI
50AQI
22nd April 2025
48AQI
48AQI
23rd April 2025
32AQI
32AQI
24th April 2025
45AQI
45AQI
25th April 2025
47AQI
47AQI
26th April 2025
52AQI
52AQI
27th April 2025
54AQI
54AQI
28th April 2025
47AQI
47AQI
29th April 2025
36AQI
36AQI
30th April 2025
50AQI
50AQI
1st May 2025
42AQI
42AQI
2nd May 2025
34AQI
34AQI
3rd May 2025
30AQI
30AQI
4th May 2025
39AQI
39AQI
5th May 2025
33AQI
33AQI
6th May 2025
29AQI
29AQI
7th May 2025
24AQI
24AQI
8th May 2025
32AQI
32AQI
9th May 2025
33AQI
33AQI
10th May 2025
22AQI
22AQI
11th May 2025
25AQI
25AQI
12th May 2025
29AQI
29AQI
13th May 2025
36AQI
36AQI
14th May 2025
38AQI
38AQI
15th May 2025
39AQI
39AQI
16th May 2025
45AQI
45AQI
17th May 2025
29AQI
29AQI
18th May 2025
45AQI
45AQI
19th May 2025
46AQI
46AQI
20th May 2025
65AQI
65AQI
21st May 2025
58AQI
58AQI
22nd May 2025
46AQI
46AQI
23rd May 2025
47AQI
47AQI
24th May 2025
46AQI
46AQI
25th May 2025
33AQI
33AQI
26th May 2025
33AQI
33AQI
27th May 2025
26AQI
26AQI
28th May 2025
28AQI
28AQI
29th May 2025
33AQI
33AQI
30th May 2025
28AQI
28AQI
31st May 2025
19AQI
19AQI
1st June 2025
26AQI
26AQI
2nd June 2025
33AQI
33AQI
3rd June 2025
35AQI
35AQI
4th June 2025
30AQI
30AQI
5th June 2025
42AQI
42AQI
6th June 2025
46AQI
46AQI
7th June 2025
50AQI
50AQI
8th June 2025
59AQI
59AQI
9th June 2025
48AQI
48AQI
10th June 2025
37AQI
37AQI
11th June 2025
34AQI
34AQI
12th June 2025
41AQI
41AQI
13th June 2025
45AQI
45AQI
14th June 2025
37AQI
37AQI
15th June 2025
30AQI
30AQI
16th June 2025
36AQI
36AQI
17th June 2025
47AQI
47AQI
18th June 2025
43AQI
43AQI
19th June 2025
44AQI
44AQI
20th June 2025
42AQI
42AQI
21st June 2025
35AQI
35AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
23AQI
23AQI
24th June 2025
21AQI
21AQI
25th June 2025
19AQI
19AQI
26th June 2025
21AQI
21AQI
27th June 2025
25AQI
25AQI
28th June 2025
25AQI
25AQI
29th June 2025
29AQI
29AQI
30th June 2025
34AQI
34AQI
1st July 2025
36AQI
36AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
46AQI
46AQI
4th July 2025
47AQI
47AQI
5th July 2025
49AQI
49AQI
6th July 2025
56AQI
56AQI
7th July 2025
71AQI
71AQI
8th July 2025
76AQI
76AQI
9th July 2025
81AQI
81AQI
10th July 2025
65AQI
65AQI
11th July 2025
55AQI
55AQI
12th July 2025
56AQI
56AQI
13th July 2025
55AQI
55AQI
14th July 2025
47AQI
47AQI
15th July 2025
46AQI
46AQI
16th July 2025
45AQI
45AQI
17th July 2025
45AQI
45AQI
18th July 2025
41AQI
41AQI
19th July 2025
37AQI
37AQI
20th July 2025
37AQI
37AQI
21st July 2025
37AQI
37AQI
22nd July 2025
37AQI
37AQI
23rd July 2025
40AQI
40AQI
24th July 2025
41AQI
41AQI
25th July 2025
38AQI
38AQI
26th July 2025
38AQI
38AQI
27th July 2025
36AQI
36AQI
28th July 2025
39AQI
39AQI
29th July 2025
37AQI
37AQI
30th July 2025
33AQI
33AQI
31st July 2025
33AQI
33AQI
1st August 2025
33AQI
33AQI
2nd August 2025
39AQI
39AQI
3rd August 2025
44AQI
44AQI
4th August 2025
58AQI
58AQI
5th August 2025
51AQI
51AQI
6th August 2025
50AQI
50AQI
7th August 2025
48AQI
48AQI
8th August 2025
47AQI
47AQI
9th August 2025
49AQI
49AQI
10th August 2025
41AQI
41AQI
11th August 2025
41AQI
41AQI
12th August 2025
36AQI
36AQI
13th August 2025
33AQI
33AQI
14th August 2025
34AQI
34AQI
15th August 2025
34AQI
34AQI
16th August 2025
36AQI
36AQI
17th August 2025
39AQI
39AQI
18th August 2025
42AQI
42AQI
19th August 2025
44AQI
44AQI
20th August 2025
47AQI
47AQI
21st August 2025
49AQI
49AQI
22nd August 2025
50AQI
50AQI
23rd August 2025
47AQI
47AQI
24th August 2025
55AQI
55AQI
25th August 2025
55AQI
55AQI
26th August 2025
53AQI
53AQI
27th August 2025
50AQI
50AQI
28th August 2025
47AQI
47AQI
29th August 2025
49AQI
49AQI
30th August 2025
54AQI
54AQI
31st August 2025
52AQI
52AQI
1st September 2025
45AQI
45AQI
2nd September 2025
37AQI
37AQI
3rd September 2025
36AQI
36AQI
4th September 2025
37AQI
37AQI
5th September 2025
31AQI
31AQI
6th September 2025
28AQI
28AQI
7th September 2025
29AQI
29AQI
8th September 2025
37AQI
37AQI
9th September 2025
41AQI
41AQI
10th September 2025
37AQI
37AQI
11th September 2025
31AQI
31AQI
12th September 2025
31AQI
31AQI
13th September 2025
28AQI
28AQI
14th September 2025
33AQI
33AQI
15th September 2025
39AQI
39AQI
16th September 2025
40AQI
40AQI
17th September 2025
45AQI
45AQI
18th September 2025
46AQI
46AQI
19th September 2025
37AQI
37AQI
20th September 2025
37AQI
37AQI
21st September 2025
31AQI
31AQI
22nd September 2025
32AQI
32AQI
23rd September 2025
31AQI
31AQI
24th September 2025
31AQI
31AQI
25th September 2025
34AQI
34AQI
26th September 2025
55AQI
55AQI
27th September 2025
39AQI
39AQI
28th September 2025
34AQI
34AQI
29th September 2025
32AQI
32AQI
30th September 2025
26AQI
26AQI
1st October 2025
38AQI
38AQI
2nd October 2025
40AQI
40AQI
3rd October 2025
49AQI
49AQI
4th October 2025
61AQI
61AQI
5th October 2025
57AQI
57AQI
6th October 2025
51AQI
51AQI
7th October 2025
54AQI
54AQI
8th October 2025
60AQI
60AQI
9th October 2025
56AQI
56AQI
10th October 2025
54AQI
54AQI
11th October 2025
55AQI
55AQI
12th October 2025
45AQI
45AQI
13th October 2025
58AQI
58AQI
14th October 2025
53AQI
53AQI
15th October 2025
51AQI
51AQI
16th October 2025
58AQI
58AQI
17th October 2025
56AQI
56AQI
18th October 2025
53AQI
53AQI
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
37AQI
36AQI
43AQI
41AQI
36AQI
35AQI
47AQI
45AQI
36AQI
53AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202540AQI
29
2
27
1
23
8
25
5
29
2
29
1
23
8
24
7
29
1
4
14
242
49
Highest AQI recorded in
October53AQI
Lowest AQI recorded in
June35AQI
202440AQI
29
2
26
3
23
8
15
15
26
5
25
5
18
13
30
1
27
3
26
5
25
5
31
301
65
Highest AQI recorded in
April53AQI
Lowest AQI recorded in
August33AQI
202343AQI
21
10
17
11
18
13
17
13
24
7
17
13
19
12
29
2
28
2
21
10
19
10
20
11
250
114
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
August30AQI
202241AQI
26
4
17
4
18
13
18
11
22
9
19
11
16
5
1
28
26
5
19
11
30
1
240
74
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
August21AQI
202140AQI
22
9
20
8
22
7
2
26
4
25
6
26
4
29
2
25
6
28
2
27
4
19
11
23
8
292
71
2
Highest AQI recorded in
March46AQI
Lowest AQI recorded in
July34AQI
202038AQI
10
3
17
4
17
1
19
11
30
1
19
12
18
1
28
3
18
12
20
11
196
59
Highest AQI recorded in
June47AQI
Lowest AQI recorded in
September19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
43AQILeast Polluted Year Recorded
2020(Avg.)
38AQINiikura's annual 2025 AQI (40) shows an average percentage change of 0.3% (worsened AQI) compared to previous years: 2020 (38), 2021 (40), 2022 (41), 2023 (43), 2024 (40).
