Nagaoka, Hamura, Tokyo, 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
Nagaoka, Hamura, Tokyo, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Oct 2025
57AQILowest AQI recorded on
13th Oct 2022
13AQISame Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 52 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
Nagaoka, Hamura, Tokyo, Japan
AQI
Day
Night
.
5 AM18th Oct 2025
5 PM
4 AM19th Oct 2025
Day time
Avg. Highest Time
1PM18th Oct
64AQI
Avg. Lowest Time
7AM18th Oct
44AQI
Night time
Avg. Highest Time
6PM18th Oct
59AQI
Avg. Lowest Time
1AM19th Oct
42AQI
In the last 24 hours,
Nagaoka's AQI reached its highest point of 64 at 1 PM during the Day, while the lowest point, 42, was recorded at 1 AM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Nagaoka, Hamura, Tokyo, 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 2025525 AMAQI
19th Sep 2025526 AMAQI
19th Sep 2025527 AMAQI
19th Sep 2025528 AMAQI
19th Sep 2025259 AMAQI
19th Sep 20251610 AMAQI
19th Sep 20251811 AMAQI
19th Sep 20251812 PMAQI
19th Sep 2025181 PMAQI
19th Sep 2025192 PMAQI
19th Sep 2025223 PMAQI
19th Sep 2025264 PMAQI
19th Sep 2025305 PMAQI
19th Sep 2025296 PMAQI
19th Sep 2025317 PMAQI
19th Sep 2025318 PMAQI
19th Sep 2025369 PMAQI
19th Sep 20253910 PMAQI
19th Sep 20253611 PMAQI
20th Sep 20253512 AMAQI
20th Sep 2025401 AMAQI
20th Sep 2025482 AMAQI
20th Sep 2025483 AMAQI
20th Sep 2025444 AMAQI
21°C19/22°C
20th Sep 2025415 AMAQI
20th Sep 2025416 AMAQI
20th Sep 2025427 AMAQI
20th Sep 2025428 AMAQI
20th Sep 2025249 AMAQI
20th Sep 20251510 AMAQI
20th Sep 20251611 AMAQI
20th Sep 20252012 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025292 PMAQI
20th Sep 2025293 PMAQI
20th Sep 2025264 PMAQI
20th Sep 2025255 PMAQI
20th Sep 2025266 PMAQI
20th Sep 2025287 PMAQI
20th Sep 2025348 PMAQI
20th Sep 2025369 PMAQI
20th Sep 20253810 PMAQI
20th Sep 20254211 PMAQI
21st Sep 20254012 AMAQI
21st Sep 2025421 AMAQI
21st Sep 2025422 AMAQI
21st Sep 2025423 AMAQI
21st Sep 2025404 AMAQI
22°C20/23°C
21st Sep 2025375 AMAQI
21st Sep 2025376 AMAQI
21st Sep 2025387 AMAQI
21st Sep 2025388 AMAQI
21st Sep 2025219 AMAQI
21st Sep 20251210 AMAQI
21st Sep 20251311 AMAQI
21st Sep 20251312 PMAQI
21st Sep 2025141 PMAQI
21st Sep 2025162 PMAQI
21st Sep 2025153 PMAQI
21st Sep 2025154 PMAQI
21st Sep 2025155 PMAQI
21st Sep 2025156 PMAQI
21st Sep 2025147 PMAQI
21st Sep 2025208 PMAQI
21st Sep 2025289 PMAQI
21st Sep 20252810 PMAQI
21st Sep 20252911 PMAQI
22nd Sep 20252812 AMAQI
22nd Sep 2025321 AMAQI
22nd Sep 2025392 AMAQI
22nd Sep 2025403 AMAQI
22nd Sep 2025374 AMAQI
24°C20/30°C
22nd Sep 2025345 AMAQI
22nd Sep 2025346 AMAQI
22nd Sep 2025347 AMAQI
22nd Sep 2025348 AMAQI
22nd Sep 2025229 AMAQI
22nd Sep 20252310 AMAQI
22nd Sep 20251611 AMAQI
22nd Sep 20251712 PMAQI
22nd Sep 2025211 PMAQI
22nd Sep 2025222 PMAQI
22nd Sep 2025253 PMAQI
22nd Sep 2025254 PMAQI
22nd Sep 2025245 PMAQI
22nd Sep 2025236 PMAQI
22nd Sep 2025287 PMAQI
22nd Sep 2025308 PMAQI
22nd Sep 2025299 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20253012 AMAQI
23rd Sep 2025321 AMAQI
23rd Sep 2025342 AMAQI
23rd Sep 2025353 AMAQI
23rd Sep 2025334 AMAQI
22°C20/25°C
23rd Sep 2025325 AMAQI
23rd Sep 2025316 AMAQI
23rd Sep 2025327 AMAQI
23rd Sep 2025328 AMAQI
23rd Sep 2025249 AMAQI
23rd Sep 20252210 AMAQI
23rd Sep 20252211 AMAQI
23rd Sep 20252212 PMAQI
23rd Sep 2025261 PMAQI
23rd Sep 2025262 PMAQI
23rd Sep 2025273 PMAQI
23rd Sep 2025264 PMAQI
23rd Sep 2025295 PMAQI
23rd Sep 2025306 PMAQI
23rd Sep 2025337 PMAQI
23rd Sep 2025318 PMAQI
23rd Sep 2025319 PMAQI
23rd Sep 20253310 PMAQI
23rd Sep 20253011 PMAQI
24th Sep 20253012 AMAQI
24th Sep 2025301 AMAQI
24th Sep 2025322 AMAQI
24th Sep 2025323 AMAQI
24th Sep 2025324 AMAQI
22°C19/25°C
24th Sep 2025305 AMAQI
24th Sep 2025306 AMAQI
24th Sep 2025307 AMAQI
24th Sep 2025308 AMAQI
24th Sep 2025289 AMAQI
24th Sep 20252810 AMAQI
24th Sep 20252211 AMAQI
24th Sep 20252412 PMAQI
24th Sep 2025241 PMAQI
24th Sep 2025282 PMAQI
24th Sep 2025313 PMAQI
24th Sep 2025344 PMAQI
24th Sep 2025345 PMAQI
24th Sep 2025346 PMAQI
24th Sep 2025327 PMAQI
24th Sep 2025338 PMAQI
24th Sep 2025289 PMAQI
24th Sep 20252810 PMAQI
24th Sep 20252711 PMAQI
25th Sep 20252612 AMAQI
25th Sep 2025281 AMAQI
25th Sep 2025312 AMAQI
25th Sep 2025303 AMAQI
25th Sep 2025304 AMAQI
22°C19/26°C
25th Sep 2025295 AMAQI
25th Sep 2025296 AMAQI
25th Sep 2025297 AMAQI
25th Sep 2025308 AMAQI
25th Sep 2025259 AMAQI
25th Sep 20252610 AMAQI
25th Sep 20252511 AMAQI
25th Sep 20253012 PMAQI
25th Sep 2025331 PMAQI
25th Sep 2025402 PMAQI
25th Sep 2025443 PMAQI
25th Sep 2025444 PMAQI
25th Sep 2025445 PMAQI
25th Sep 2025426 PMAQI
25th Sep 2025377 PMAQI
25th Sep 2025328 PMAQI
25th Sep 2025299 PMAQI
25th Sep 20252810 PMAQI
25th Sep 20253011 PMAQI
26th Sep 20252812 AMAQI
26th Sep 2025301 AMAQI
26th Sep 2025282 AMAQI
26th Sep 2025283 AMAQI
26th Sep 2025284 AMAQI
23°C19/28°C
26th Sep 2025285 AMAQI
26th Sep 2025286 AMAQI
26th Sep 2025267 AMAQI
26th Sep 2025278 AMAQI
26th Sep 2025289 AMAQI
26th Sep 20253010 AMAQI
26th Sep 20253811 AMAQI
26th Sep 20254512 PMAQI
26th Sep 2025541 PMAQI
26th Sep 2025592 PMAQI
26th Sep 2025513 PMAQI
26th Sep 2025474 PMAQI
26th Sep 2025675 PMAQI
26th Sep 20251046 PMAQI
26th Sep 2025907 PMAQI
26th Sep 2025778 PMAQI
26th Sep 2025659 PMAQI
26th Sep 20256110 PMAQI
26th Sep 20254811 PMAQI
27th Sep 20254112 AMAQI
27th Sep 2025431 AMAQI
27th Sep 2025402 AMAQI
27th Sep 2025473 AMAQI
27th Sep 2025454 AMAQI
26°C22/31°C
27th Sep 2025335 AMAQI
27th Sep 2025376 AMAQI
27th Sep 2025397 AMAQI
27th Sep 2025358 AMAQI
27th Sep 2025339 AMAQI
27th Sep 20253410 AMAQI
27th Sep 20253411 AMAQI
27th Sep 20253712 PMAQI
27th Sep 2025351 PMAQI
27th Sep 2025282 PMAQI
27th Sep 2025313 PMAQI
27th Sep 2025334 PMAQI
27th Sep 2025385 PMAQI
27th Sep 2025426 PMAQI
27th Sep 2025417 PMAQI
27th Sep 2025358 PMAQI
27th Sep 2025339 PMAQI
27th Sep 20253810 PMAQI
27th Sep 20253911 PMAQI
28th Sep 20254212 AMAQI
28th Sep 2025441 AMAQI
28th Sep 2025362 AMAQI
28th Sep 2025353 AMAQI
28th Sep 2025344 AMAQI
24°C22/26°C
28th Sep 2025335 AMAQI
28th Sep 2025356 AMAQI
28th Sep 2025347 AMAQI
28th Sep 2025378 AMAQI
28th Sep 2025359 AMAQI
28th Sep 20253410 AMAQI
28th Sep 20253311 AMAQI
28th Sep 20253512 PMAQI
28th Sep 2025311 PMAQI
28th Sep 2025282 PMAQI
28th Sep 2025263 PMAQI
28th Sep 2025244 PMAQI
28th Sep 2025295 PMAQI
28th Sep 2025336 PMAQI
28th Sep 2025297 PMAQI
28th Sep 2025288 PMAQI
28th Sep 2025289 PMAQI
28th Sep 20252410 PMAQI
28th Sep 20252611 PMAQI
29th Sep 20252812 AMAQI
29th Sep 2025241 AMAQI
29th Sep 2025272 AMAQI
29th Sep 2025433 AMAQI
29th Sep 2025424 AMAQI
24°C21/27°C
29th Sep 2025425 AMAQI
29th Sep 2025356 AMAQI
29th Sep 2025367 AMAQI
29th Sep 2025388 AMAQI
29th Sep 2025299 AMAQI
29th Sep 20253110 AMAQI
29th Sep 20253311 AMAQI
29th Sep 20253312 PMAQI
29th Sep 2025401 PMAQI
29th Sep 2025442 PMAQI
29th Sep 2025443 PMAQI
29th Sep 2025494 PMAQI
29th Sep 2025365 PMAQI
29th Sep 2025386 PMAQI
29th Sep 2025377 PMAQI
29th Sep 2025268 PMAQI
29th Sep 2025249 PMAQI
29th Sep 20252710 PMAQI
29th Sep 20252211 PMAQI
30th Sep 20252012 AMAQI
30th Sep 2025211 AMAQI
30th Sep 2025242 AMAQI
30th Sep 2025193 AMAQI
30th Sep 2025174 AMAQI
26°C22/32°C
30th Sep 2025265 AMAQI
30th Sep 2025276 AMAQI
30th Sep 2025227 AMAQI
30th Sep 2025188 AMAQI
30th Sep 2025179 AMAQI
30th Sep 20251910 AMAQI
30th Sep 20252411 AMAQI
30th Sep 20252712 PMAQI
30th Sep 2025321 PMAQI
30th Sep 2025292 PMAQI
30th Sep 2025303 PMAQI
30th Sep 2025304 PMAQI
30th Sep 2025245 PMAQI
30th Sep 2025316 PMAQI
30th Sep 2025387 PMAQI
30th Sep 2025328 PMAQI
30th Sep 2025289 PMAQI
30th Sep 20253210 PMAQI
30th Sep 20253411 PMAQI
1st Oct 20253512 AMAQI
1st Oct 2025441 AMAQI
1st Oct 2025372 AMAQI
1st Oct 2025363 AMAQI
1st Oct 2025354 AMAQI
22°C20/25°C
1st Oct 2025475 AMAQI
1st Oct 2025436 AMAQI
1st Oct 2025367 AMAQI
1st Oct 2025448 AMAQI
1st Oct 2025349 AMAQI
1st Oct 20254010 AMAQI
1st Oct 20253811 AMAQI
1st Oct 20253212 PMAQI
1st Oct 2025281 PMAQI
1st Oct 2025282 PMAQI
1st Oct 2025283 PMAQI
1st Oct 2025204 PMAQI
1st Oct 2025205 PMAQI
1st Oct 2025236 PMAQI
1st Oct 2025257 PMAQI
1st Oct 2025298 PMAQI
1st Oct 2025389 PMAQI
1st Oct 20253910 PMAQI
1st Oct 20253711 PMAQI
2nd Oct 20253912 AMAQI
2nd Oct 2025411 AMAQI
2nd Oct 2025372 AMAQI
2nd Oct 2025363 AMAQI
2nd Oct 2025354 AMAQI
19°C18/20°C
2nd Oct 2025355 AMAQI
2nd Oct 2025386 AMAQI
2nd Oct 2025387 AMAQI
2nd Oct 2025378 AMAQI
2nd Oct 2025399 AMAQI
2nd Oct 20253410 AMAQI
2nd Oct 20253511 AMAQI
2nd Oct 20253412 PMAQI
2nd Oct 2025341 PMAQI
2nd Oct 2025372 PMAQI
2nd Oct 2025383 PMAQI
2nd Oct 2025364 PMAQI
2nd Oct 2025425 PMAQI
2nd Oct 2025476 PMAQI
2nd Oct 2025497 PMAQI
2nd Oct 2025538 PMAQI
2nd Oct 2025539 PMAQI
2nd Oct 20254010 PMAQI
2nd Oct 20253811 PMAQI
3rd Oct 20254312 AMAQI
3rd Oct 2025381 AMAQI
3rd Oct 2025362 AMAQI
3rd Oct 2025383 AMAQI
3rd Oct 2025374 AMAQI
21°C17/26°C
3rd Oct 2025345 AMAQI
3rd Oct 2025396 AMAQI
3rd Oct 2025397 AMAQI
3rd Oct 2025388 AMAQI
3rd Oct 2025429 AMAQI
3rd Oct 20253910 AMAQI
3rd Oct 20254011 AMAQI
3rd Oct 20254812 PMAQI
3rd Oct 2025481 PMAQI
3rd Oct 2025422 PMAQI
3rd Oct 2025373 PMAQI
3rd Oct 2025434 PMAQI
3rd Oct 2025475 PMAQI
3rd Oct 2025476 PMAQI
3rd Oct 2025497 PMAQI
3rd Oct 2025408 PMAQI
3rd Oct 2025629 PMAQI
3rd Oct 20256410 PMAQI
3rd Oct 20256111 PMAQI
4th Oct 20256312 AMAQI
4th Oct 2025611 AMAQI
4th Oct 2025632 AMAQI
4th Oct 2025623 AMAQI
4th Oct 2025564 AMAQI
22°C19/25°C
4th Oct 2025515 AMAQI
4th Oct 2025526 AMAQI
4th Oct 2025507 AMAQI
4th Oct 2025538 AMAQI
4th Oct 2025459 AMAQI
4th Oct 20254810 AMAQI
4th Oct 20254911 AMAQI
4th Oct 20256312 PMAQI
4th Oct 2025651 PMAQI
4th Oct 2025622 PMAQI
4th Oct 2025593 PMAQI
4th Oct 2025554 PMAQI
4th Oct 2025555 PMAQI
4th Oct 2025556 PMAQI
4th Oct 2025617 PMAQI
4th Oct 2025588 PMAQI
4th Oct 2025569 PMAQI
4th Oct 20255610 PMAQI
4th Oct 20255511 PMAQI
5th Oct 20254712 AMAQI
5th Oct 2025471 AMAQI
5th Oct 2025472 AMAQI
5th Oct 2025523 AMAQI
5th Oct 2025534 AMAQI
21°C20/24°C
5th Oct 2025575 AMAQI
5th Oct 2025576 AMAQI
5th Oct 2025577 AMAQI
5th Oct 2025558 AMAQI
5th Oct 2025589 AMAQI
5th Oct 20256210 AMAQI
5th Oct 20256411 AMAQI
5th Oct 20256112 PMAQI
5th Oct 2025621 PMAQI
5th Oct 2025582 PMAQI
5th Oct 2025653 PMAQI
5th Oct 2025654 PMAQI
5th Oct 2025625 PMAQI
5th Oct 2025586 PMAQI
5th Oct 2025517 PMAQI
5th Oct 2025538 PMAQI
5th Oct 2025559 PMAQI
5th Oct 20255510 PMAQI
5th Oct 20255411 PMAQI
6th Oct 20255012 AMAQI
6th Oct 2025511 AMAQI
6th Oct 2025552 AMAQI
6th Oct 2025533 AMAQI
6th Oct 2025554 AMAQI
23°C19/27°C
6th Oct 2025545 AMAQI
6th Oct 2025486 AMAQI
6th Oct 2025457 AMAQI
6th Oct 2025478 AMAQI
6th Oct 2025529 AMAQI
6th Oct 20255310 AMAQI
6th Oct 20255411 AMAQI
6th Oct 20256012 PMAQI
6th Oct 2025601 PMAQI
6th Oct 2025552 PMAQI
6th Oct 2025543 PMAQI
6th Oct 2025534 PMAQI
6th Oct 2025395 PMAQI
6th Oct 2025356 PMAQI
6th Oct 2025517 PMAQI
6th Oct 2025538 PMAQI
6th Oct 2025549 PMAQI
6th Oct 20255410 PMAQI
6th Oct 20254711 PMAQI
7th Oct 20254512 AMAQI
7th Oct 2025501 AMAQI
7th Oct 2025462 AMAQI
23°C18/28°C
7th Oct 2025448 PMAQI
7th Oct 2025329 PMAQI
7th Oct 20254210 PMAQI
7th Oct 20254611 PMAQI
8th Oct 20255412 AMAQI
8th Oct 2025551 AMAQI
8th Oct 2025532 AMAQI
8th Oct 2025533 AMAQI
8th Oct 2025554 AMAQI
19°C17/20°C
8th Oct 2025545 AMAQI
8th Oct 2025526 AMAQI
8th Oct 2025527 AMAQI
8th Oct 2025558 AMAQI
8th Oct 2025589 AMAQI
8th Oct 20255710 AMAQI
8th Oct 20255411 AMAQI
8th Oct 20256012 PMAQI
8th Oct 2025591 PMAQI
8th Oct 2025612 PMAQI
8th Oct 2025613 PMAQI
8th Oct 2025494 PMAQI
8th Oct 2025545 PMAQI
8th Oct 2025476 PMAQI
8th Oct 2025507 PMAQI
8th Oct 2025518 PMAQI
8th Oct 2025579 PMAQI
8th Oct 20255410 PMAQI
8th Oct 20256111 PMAQI
9th Oct 20256212 AMAQI
9th Oct 2025621 AMAQI
9th Oct 2025592 AMAQI
9th Oct 2025603 AMAQI
9th Oct 2025654 AMAQI
23°C18/27°C
9th Oct 2025715 AMAQI
9th Oct 2025706 AMAQI
9th Oct 2025687 AMAQI
9th Oct 2025608 AMAQI
9th Oct 2025499 AMAQI
9th Oct 20255310 AMAQI
9th Oct 20254711 AMAQI
9th Oct 20254412 PMAQI
9th Oct 2025441 PMAQI
9th Oct 2025392 PMAQI
9th Oct 2025483 PMAQI
9th Oct 2025514 PMAQI
9th Oct 2025565 PMAQI
9th Oct 2025566 PMAQI
9th Oct 2025567 PMAQI
9th Oct 2025558 PMAQI
9th Oct 2025559 PMAQI
9th Oct 20255510 PMAQI
9th Oct 20255311 PMAQI
10th Oct 20255212 AMAQI
10th Oct 2025531 AMAQI
10th Oct 2025502 AMAQI
10th Oct 2025473 AMAQI
10th Oct 2025484 AMAQI
19°C16/21°C
10th Oct 2025455 AMAQI
10th Oct 2025496 AMAQI
10th Oct 2025497 AMAQI
10th Oct 2025498 AMAQI
10th Oct 2025509 AMAQI
10th Oct 20255010 AMAQI
10th Oct 20254911 AMAQI
10th Oct 20254812 PMAQI
10th Oct 2025531 PMAQI
10th Oct 2025582 PMAQI
10th Oct 2025603 PMAQI
10th Oct 2025594 PMAQI
10th Oct 2025585 PMAQI
10th Oct 2025596 PMAQI
10th Oct 2025557 PMAQI
10th Oct 2025528 PMAQI
10th Oct 2025479 PMAQI
10th Oct 20254910 PMAQI
10th Oct 20255311 PMAQI
11th Oct 20255612 AMAQI
11th Oct 2025541 AMAQI
11th Oct 2025572 AMAQI
11th Oct 2025563 AMAQI
11th Oct 2025554 AMAQI
19°C16/22°C
11th Oct 2025565 AMAQI
11th Oct 2025566 AMAQI
11th Oct 2025577 AMAQI
11th Oct 2025628 AMAQI
11th Oct 2025589 AMAQI
11th Oct 20255810 AMAQI
11th Oct 20255211 AMAQI
11th Oct 20254612 PMAQI
11th Oct 2025481 PMAQI
11th Oct 2025522 PMAQI
11th Oct 2025543 PMAQI
11th Oct 2025494 PMAQI
11th Oct 2025435 PMAQI
11th Oct 2025516 PMAQI
11th Oct 2025527 PMAQI
11th Oct 2025358 PMAQI
11th Oct 2025259 PMAQI
11th Oct 20252410 PMAQI
11th Oct 20254811 PMAQI
12th Oct 20255012 AMAQI
12th Oct 2025521 AMAQI
12th Oct 2025482 AMAQI
12th Oct 2025433 AMAQI
12th Oct 2025444 AMAQI
18°C16/18°C
12th Oct 2025445 AMAQI
12th Oct 2025446 AMAQI
12th Oct 2025537 AMAQI
12th Oct 2025498 AMAQI
12th Oct 2025439 AMAQI
12th Oct 20254810 AMAQI
12th Oct 20255211 AMAQI
12th Oct 20255012 PMAQI
12th Oct 2025491 PMAQI
12th Oct 2025482 PMAQI
12th Oct 2025543 PMAQI
12th Oct 2025544 PMAQI
12th Oct 2025545 PMAQI
12th Oct 2025526 PMAQI
12th Oct 2025497 PMAQI
12th Oct 2025508 PMAQI
12th Oct 2025559 PMAQI
12th Oct 20255410 PMAQI
12th Oct 20255011 PMAQI
13th Oct 20255312 AMAQI
13th Oct 2025561 AMAQI
13th Oct 2025542 AMAQI
13th Oct 2025533 AMAQI
13th Oct 2025444 AMAQI
20°C15/24°C
13th Oct 2025425 AMAQI
13th Oct 2025476 AMAQI
13th Oct 2025547 AMAQI
13th Oct 2025568 AMAQI
13th Oct 2025559 AMAQI
13th Oct 20255310 AMAQI
13th Oct 20255611 AMAQI
13th Oct 20255612 PMAQI
13th Oct 2025621 PMAQI
13th Oct 2025592 PMAQI
13th Oct 2025583 PMAQI
13th Oct 2025564 PMAQI
13th Oct 2025565 PMAQI
13th Oct 2025536 PMAQI
13th Oct 2025417 PMAQI
13th Oct 2025428 PMAQI
13th Oct 2025549 PMAQI
13th Oct 20255410 PMAQI
13th Oct 20255711 PMAQI
14th Oct 20255012 AMAQI
14th Oct 2025541 AMAQI
14th Oct 2025482 AMAQI
14th Oct 2025523 AMAQI
14th Oct 2025484 AMAQI
21°C19/24°C
14th Oct 2025495 AMAQI
14th Oct 2025486 AMAQI
14th Oct 2025497 AMAQI
14th Oct 2025488 AMAQI
14th Oct 2025489 AMAQI
14th Oct 20255210 AMAQI
14th Oct 20255511 AMAQI
14th Oct 20254712 PMAQI
14th Oct 2025541 PMAQI
14th Oct 2025562 PMAQI
14th Oct 2025543 PMAQI
14th Oct 2025594 PMAQI
14th Oct 2025595 PMAQI
14th Oct 2025586 PMAQI
14th Oct 2025627 PMAQI
14th Oct 2025618 PMAQI
14th Oct 2025609 PMAQI
14th Oct 20255910 PMAQI
14th Oct 20255411 PMAQI
15th Oct 20255112 AMAQI
15th Oct 2025521 AMAQI
15th Oct 2025512 AMAQI
15th Oct 2025543 AMAQI
15th Oct 2025544 AMAQI
17°C15/18°C
15th Oct 2025565 AMAQI
15th Oct 2025556 AMAQI
15th Oct 2025557 AMAQI
15th Oct 2025528 AMAQI
15th Oct 2025579 AMAQI
15th Oct 20255610 AMAQI
15th Oct 20255311 AMAQI
15th Oct 20254612 PMAQI
15th Oct 2025431 PMAQI
15th Oct 2025412 PMAQI
15th Oct 2025473 PMAQI
15th Oct 2025554 PMAQI
15th Oct 2025545 PMAQI
15th Oct 2025506 PMAQI
15th Oct 2025487 PMAQI
15th Oct 2025568 PMAQI
15th Oct 2025629 PMAQI
15th Oct 20255810 PMAQI
15th Oct 20255611 PMAQI
16th Oct 20255612 AMAQI
16th Oct 2025551 AMAQI
16th Oct 2025542 AMAQI
16th Oct 2025543 AMAQI
16th Oct 2025554 AMAQI
17°C14/20°C
16th Oct 2025525 AMAQI
16th Oct 2025576 AMAQI
16th Oct 2025557 AMAQI
16th Oct 2025518 AMAQI
16th Oct 2025549 AMAQI
16th Oct 20255210 AMAQI
16th Oct 20255111 AMAQI
16th Oct 20255012 PMAQI
16th Oct 2025521 PMAQI
16th Oct 2025462 PMAQI
16th Oct 2025443 PMAQI
16th Oct 2025404 PMAQI
16th Oct 2025515 PMAQI
16th Oct 2025446 PMAQI
16th Oct 2025467 PMAQI
16th Oct 2025438 PMAQI
16th Oct 2025729 PMAQI
16th Oct 20257310 PMAQI
16th Oct 20257611 PMAQI
17th Oct 20257212 AMAQI
17th Oct 2025521 AMAQI
17th Oct 2025542 AMAQI
17th Oct 2025533 AMAQI
17th Oct 2025494 AMAQI
18°C16/20°C
17th Oct 2025515 AMAQI
17th Oct 2025566 AMAQI
17th Oct 2025507 AMAQI
17th Oct 2025428 AMAQI
17th Oct 2025409 AMAQI
17th Oct 20253510 AMAQI
17th Oct 20254411 AMAQI
17th Oct 20255012 PMAQI
17th Oct 2025531 PMAQI
17th Oct 2025582 PMAQI
17th Oct 2025613 PMAQI
17th Oct 2025644 PMAQI
17th Oct 2025615 PMAQI
17th Oct 2025536 PMAQI
17th Oct 2025547 PMAQI
17th Oct 2025538 PMAQI
17th Oct 2025549 PMAQI
17th Oct 20255110 PMAQI
17th Oct 20254811 PMAQI
18th Oct 20255212 AMAQI
18th Oct 2025521 AMAQI
18th Oct 2025522 AMAQI
18th Oct 2025523 AMAQI
18th Oct 2025494 AMAQI
20°C17/25°C
18th Oct 2025515 AMAQI
18th Oct 2025516 AMAQI
18th Oct 2025447 AMAQI
18th Oct 2025478 AMAQI
18th Oct 2025479 AMAQI
18th Oct 20255210 AMAQI
18th Oct 20255411 AMAQI
18th Oct 20255712 PMAQI
18th Oct 2025641 PMAQI
18th Oct 2025622 PMAQI
18th Oct 2025623 PMAQI
18th Oct 2025594 PMAQI
18th Oct 2025565 PMAQI
18th Oct 2025596 PMAQI
18th Oct 2025517 PMAQI
18th Oct 2025458 PMAQI
18th Oct 2025489 PMAQI
18th Oct 20255210 PMAQI
18th Oct 20255311 PMAQI
19th Oct 20254412 AMAQI
19th Oct 2025421 AMAQI
19th Oct 2025512 AMAQI
19th Oct 2025523 AMAQI
19th Oct 2025504 AMAQI
21°C16/27°C
19th Oct 2025525 AMAQI
5 AM19th Oct 2025496 AMAQI
19th Oct 2025537 AMAQI
19th Oct 2025538 AMAQI
19th Oct 2025559 AMAQI
19th Oct 20255610 AMAQI
19th Oct 20254911 AMAQI
11 AM19th Oct 20254812 PMAQI
19th Oct 2025481 PMAQI
19th Oct 2025402 PMAQI
19th Oct 2025223 PMAQI
19th Oct 2025224 PMAQI
19th Oct 2025415 PMAQI
5 PM19th Oct 2025426 PMAQI
19th Oct 2025397 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 AM
44AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
9 AM - 12 PM
40AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 44), while the lowest AQI was between 9 AM to 12 PM (Avg. 40).
Night time
Avg. Highest Time
12 AM - 11 PM
44AQI
11 hours / Day
330 hours / Month
Avg. Lowest Time
12 AM - 11 PM
44AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 44), while the lowest AQI was between 12 AM to 11 PM (Avg. 44).
2025 Days Vs Air Quality
Nagaoka, Hamura, Tokyo, Japan
2025
89%
260
11%
31
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Good
260 DaysModerate
31 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 292 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
Nagaoka, Hamura, Tokyo, 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
26AQI
26AQI
2nd January 2025
26AQI
26AQI
3rd January 2025
23AQI
23AQI
4th January 2025
24AQI
24AQI
5th January 2025
21AQI
21AQI
6th January 2025
25AQI
25AQI
7th January 2025
23AQI
23AQI
8th January 2025
28AQI
28AQI
9th January 2025
25AQI
25AQI
10th January 2025
24AQI
24AQI
11th January 2025
24AQI
24AQI
12th January 2025
25AQI
25AQI
13th January 2025
26AQI
26AQI
14th January 2025
24AQI
24AQI
15th January 2025
28AQI
28AQI
16th January 2025
23AQI
23AQI
17th January 2025
25AQI
25AQI
18th January 2025
25AQI
25AQI
19th January 2025
28AQI
28AQI
20th January 2025
27AQI
27AQI
21st January 2025
30AQI
30AQI
22nd January 2025
29AQI
29AQI
23rd January 2025
31AQI
31AQI
24th January 2025
34AQI
34AQI
25th January 2025
32AQI
32AQI
26th January 2025
32AQI
32AQI
27th January 2025
22AQI
22AQI
28th January 2025
26AQI
26AQI
29th January 2025
23AQI
23AQI
30th January 2025
27AQI
27AQI
31st January 2025
25AQI
25AQI
1st February 2025
29AQI
29AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
26AQI
26AQI
4th February 2025
30AQI
30AQI
5th February 2025
30AQI
30AQI
6th February 2025
28AQI
28AQI
7th February 2025
29AQI
29AQI
8th February 2025
29AQI
29AQI
9th February 2025
28AQI
28AQI
10th February 2025
27AQI
27AQI
11th February 2025
29AQI
29AQI
12th February 2025
27AQI
27AQI
13th February 2025
33AQI
33AQI
14th February 2025
28AQI
28AQI
15th February 2025
32AQI
32AQI
16th February 2025
32AQI
32AQI
17th February 2025
34AQI
34AQI
18th February 2025
30AQI
30AQI
19th February 2025
30AQI
30AQI
20th February 2025
29AQI
29AQI
21st February 2025
30AQI
30AQI
22nd February 2025
28AQI
28AQI
23rd February 2025
32AQI
32AQI
24th February 2025
31AQI
31AQI
25th February 2025
32AQI
32AQI
26th February 2025
34AQI
34AQI
27th February 2025
37AQI
37AQI
28th February 2025
39AQI
39AQI
1st March 2025
45AQI
45AQI
2nd March 2025
44AQI
44AQI
3rd March 2025
34AQI
34AQI
4th March 2025
32AQI
32AQI
5th March 2025
25AQI
25AQI
6th March 2025
30AQI
30AQI
7th March 2025
32AQI
32AQI
8th March 2025
32AQI
32AQI
9th March 2025
35AQI
35AQI
10th March 2025
33AQI
33AQI
11th March 2025
33AQI
33AQI
12th March 2025
29AQI
29AQI
13th March 2025
34AQI
34AQI
14th March 2025
23AQI
23AQI
15th March 2025
21AQI
21AQI
16th March 2025
17AQI
17AQI
17th March 2025
16AQI
16AQI
18th March 2025
17AQI
17AQI
19th March 2025
14AQI
14AQI
20th March 2025
18AQI
18AQI
21st March 2025
25AQI
25AQI
22nd March 2025
35AQI
35AQI
23rd March 2025
40AQI
40AQI
24th March 2025
42AQI
42AQI
25th March 2025
66AQI
66AQI
26th March 2025
74AQI
74AQI
27th March 2025
66AQI
66AQI
28th March 2025
45AQI
45AQI
29th March 2025
34AQI
34AQI
30th March 2025
39AQI
39AQI
31st March 2025
33AQI
33AQI
1st April 2025
25AQI
25AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
20AQI
20AQI
4th April 2025
19AQI
19AQI
5th April 2025
22AQI
22AQI
6th April 2025
17AQI
17AQI
7th April 2025
19AQI
19AQI
8th April 2025
25AQI
25AQI
9th April 2025
21AQI
21AQI
10th April 2025
32AQI
32AQI
11th April 2025
29AQI
29AQI
12th April 2025
30AQI
30AQI
13th April 2025
25AQI
25AQI
14th April 2025
27AQI
27AQI
15th April 2025
23AQI
23AQI
16th April 2025
24AQI
24AQI
17th April 2025
35AQI
35AQI
18th April 2025
40AQI
40AQI
19th April 2025
49AQI
49AQI
20th April 2025
43AQI
43AQI
21st April 2025
34AQI
34AQI
22nd April 2025
34AQI
34AQI
23rd April 2025
23AQI
23AQI
24th April 2025
25AQI
25AQI
25th April 2025
29AQI
29AQI
26th April 2025
33AQI
33AQI
27th April 2025
34AQI
34AQI
28th April 2025
32AQI
32AQI
29th April 2025
26AQI
26AQI
30th April 2025
31AQI
31AQI
1st May 2025
27AQI
27AQI
2nd May 2025
23AQI
23AQI
3rd May 2025
21AQI
21AQI
4th May 2025
23AQI
23AQI
5th May 2025
19AQI
19AQI
6th May 2025
20AQI
20AQI
7th May 2025
16AQI
16AQI
8th May 2025
19AQI
19AQI
9th May 2025
18AQI
18AQI
10th May 2025
16AQI
16AQI
11th May 2025
17AQI
17AQI
12th May 2025
17AQI
17AQI
13th May 2025
22AQI
22AQI
14th May 2025
21AQI
21AQI
15th May 2025
23AQI
23AQI
16th May 2025
25AQI
25AQI
17th May 2025
21AQI
21AQI
18th May 2025
26AQI
26AQI
19th May 2025
27AQI
27AQI
20th May 2025
41AQI
41AQI
21st May 2025
43AQI
43AQI
22nd May 2025
35AQI
35AQI
23rd May 2025
33AQI
33AQI
24th May 2025
31AQI
31AQI
25th May 2025
24AQI
24AQI
26th May 2025
26AQI
26AQI
27th May 2025
25AQI
25AQI
28th May 2025
21AQI
21AQI
29th May 2025
20AQI
20AQI
30th May 2025
17AQI
17AQI
31st May 2025
15AQI
15AQI
1st June 2025
17AQI
17AQI
2nd June 2025
17AQI
17AQI
3rd June 2025
19AQI
19AQI
4th June 2025
18AQI
18AQI
5th June 2025
24AQI
24AQI
6th June 2025
24AQI
24AQI
7th June 2025
30AQI
30AQI
8th June 2025
35AQI
35AQI
9th June 2025
31AQI
31AQI
10th June 2025
27AQI
27AQI
11th June 2025
24AQI
24AQI
12th June 2025
27AQI
27AQI
13th June 2025
28AQI
28AQI
14th June 2025
23AQI
23AQI
15th June 2025
21AQI
21AQI
16th June 2025
24AQI
24AQI
17th June 2025
35AQI
35AQI
18th June 2025
29AQI
29AQI
19th June 2025
30AQI
30AQI
20th June 2025
29AQI
29AQI
21st June 2025
23AQI
23AQI
22nd June 2025
12AQI
12AQI
23rd June 2025
14AQI
14AQI
24th June 2025
16AQI
16AQI
25th June 2025
16AQI
16AQI
26th June 2025
16AQI
16AQI
27th June 2025
20AQI
20AQI
28th June 2025
20AQI
20AQI
29th June 2025
24AQI
24AQI
30th June 2025
43AQI
43AQI
1st July 2025
46AQI
46AQI
2nd July 2025
47AQI
47AQI
3rd July 2025
48AQI
48AQI
4th July 2025
49AQI
49AQI
5th July 2025
53AQI
53AQI
6th July 2025
59AQI
59AQI
7th July 2025
75AQI
75AQI
8th July 2025
77AQI
77AQI
9th July 2025
78AQI
78AQI
10th July 2025
60AQI
60AQI
11th July 2025
48AQI
48AQI
12th July 2025
53AQI
53AQI
13th July 2025
50AQI
50AQI
14th July 2025
39AQI
39AQI
15th July 2025
36AQI
36AQI
16th July 2025
39AQI
39AQI
17th July 2025
39AQI
39AQI
18th July 2025
35AQI
35AQI
19th July 2025
33AQI
33AQI
20th July 2025
35AQI
35AQI
21st July 2025
37AQI
37AQI
22nd July 2025
41AQI
41AQI
23rd July 2025
46AQI
46AQI
24th July 2025
47AQI
47AQI
25th July 2025
46AQI
46AQI
26th July 2025
44AQI
44AQI
27th July 2025
41AQI
41AQI
28th July 2025
47AQI
47AQI
29th July 2025
46AQI
46AQI
30th July 2025
36AQI
36AQI
31st July 2025
38AQI
38AQI
1st August 2025
35AQI
35AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
46AQI
46AQI
4th August 2025
61AQI
61AQI
5th August 2025
52AQI
52AQI
6th August 2025
50AQI
50AQI
7th August 2025
46AQI
46AQI
8th August 2025
44AQI
44AQI
9th August 2025
50AQI
50AQI
10th August 2025
39AQI
39AQI
11th August 2025
36AQI
36AQI
12th August 2025
36AQI
36AQI
13th August 2025
33AQI
33AQI
14th August 2025
35AQI
35AQI
15th August 2025
42AQI
42AQI
16th August 2025
41AQI
41AQI
17th August 2025
40AQI
40AQI
18th August 2025
43AQI
43AQI
19th August 2025
45AQI
45AQI
20th August 2025
48AQI
48AQI
21st August 2025
48AQI
48AQI
22nd August 2025
48AQI
48AQI
23rd August 2025
48AQI
48AQI
24th August 2025
54AQI
54AQI
25th August 2025
57AQI
57AQI
26th August 2025
55AQI
55AQI
27th August 2025
51AQI
51AQI
28th August 2025
48AQI
48AQI
29th August 2025
51AQI
51AQI
30th August 2025
55AQI
55AQI
31st August 2025
54AQI
54AQI
1st September 2025
44AQI
44AQI
2nd September 2025
38AQI
38AQI
3rd September 2025
37AQI
37AQI
4th September 2025
33AQI
33AQI
5th September 2025
27AQI
27AQI
6th September 2025
29AQI
29AQI
7th September 2025
30AQI
30AQI
8th September 2025
39AQI
39AQI
9th September 2025
41AQI
41AQI
10th September 2025
39AQI
39AQI
11th September 2025
32AQI
32AQI
12th September 2025
33AQI
33AQI
13th September 2025
32AQI
32AQI
14th September 2025
42AQI
42AQI
15th September 2025
40AQI
40AQI
16th September 2025
42AQI
42AQI
17th September 2025
48AQI
48AQI
18th September 2025
46AQI
46AQI
19th September 2025
35AQI
35AQI
20th September 2025
34AQI
34AQI
21st September 2025
27AQI
27AQI
22nd September 2025
29AQI
29AQI
23rd September 2025
30AQI
30AQI
24th September 2025
30AQI
30AQI
25th September 2025
33AQI
33AQI
26th September 2025
48AQI
48AQI
27th September 2025
38AQI
38AQI
28th September 2025
32AQI
32AQI
29th September 2025
34AQI
34AQI
30th September 2025
26AQI
26AQI
1st October 2025
33AQI
33AQI
2nd October 2025
40AQI
40AQI
3rd October 2025
44AQI
44AQI
4th October 2025
57AQI
57AQI
5th October 2025
56AQI
56AQI
6th October 2025
51AQI
51AQI
7th October 2025
43AQI
43AQI
8th October 2025
55AQI
55AQI
9th October 2025
56AQI
56AQI
10th October 2025
52AQI
52AQI
11th October 2025
49AQI
49AQI
12th October 2025
50AQI
50AQI
13th October 2025
53AQI
53AQI
14th October 2025
54AQI
54AQI
15th October 2025
52AQI
52AQI
16th October 2025
55AQI
55AQI
17th October 2025
55AQI
55AQI
18th October 2025
52AQI
52AQI
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
26AQI
30AQI
34AQI
28AQI
24AQI
24AQI
47AQI
46AQI
36AQI
50AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202534AQI
31
28
28
3
30
31
30
24
7
22
9
30
6
12
260
31
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
May24AQI
202430AQI
31
29
31
30
29
2
27
3
26
5
31
30
31
30
31
356
10
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
December24AQI
202328AQI
31
28
28
3
24
6
28
3
27
3
31
31
30
31
28
1
31
348
16
Highest AQI recorded in
April40AQI
Lowest AQI recorded in
August20AQI
202227AQI
31
19
2
31
28
2
30
1
29
1
19
3
1
27
1
31
30
31
307
10
Highest AQI recorded in
April35AQI
Lowest AQI recorded in
August19AQI
202122AQI
31
28
30
1
30
30
1
27
3
31
29
2
30
31
30
31
358
7
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
January13AQI
202016AQI
13
21
18
30
31
31
19
31
30
31
255
Highest AQI recorded in
March21AQI
Lowest AQI recorded in
September11AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
34AQILeast Polluted Year Recorded
2020(Avg.)
16AQINagaoka's annual 2025 AQI (34) shows an average percentage change of 46.1% (worsened AQI) compared to previous years: 2020 (16), 2021 (22), 2022 (27), 2023 (28), 2024 (30).
