Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Naka, Niigata, 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+

July Air Quality Analysis

Naka, Niigata, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
14th Jul 2024
88AQI
Lowest AQI recorded on
13th Jul 2022
17AQI

Same Day Analysis (28th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 43 of Good air quality, showing improvement over 2024 and 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 29th Jul - 30th Jul 2025

Naka, Niigata, Japan

AQI
Day
Night
.

4 AM29th Jul 2025

7 PM

3 AM30th Jul 2025

Day time
Avg. Highest Time
2PM29th Jul

41AQI

Avg. Lowest Time
9AM29th Jul

28AQI

Night time
Avg. Highest Time
1AM30th Jul

34AQI

Avg. Lowest Time
9PM29th Jul

31AQI

In the last 24 hours,

Naka's AQI reached its highest point of 41 at 2 PM during the Day, while the lowest point, 28, was recorded at 9 AM during the Day between 29th Jul and 30th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025

Naka, Niigata, Japan

JunJul
30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th
Day
Night
30th Jun 2025514 AMAQI
30th Jun 2025515 AMAQI
30th Jun 2025516 AMAQI
30th Jun 2025517 AMAQI
30th Jun 2025518 AMAQI
30th Jun 2025559 AMAQI
30th Jun 20255710 AMAQI
30th Jun 20255811 AMAQI
30th Jun 20256012 PMAQI
30th Jun 2025611 PMAQI
30th Jun 2025612 PMAQI
30th Jun 2025623 PMAQI
30th Jun 2025604 PMAQI
30th Jun 2025605 PMAQI
30th Jun 2025626 PMAQI
30th Jun 2025607 PMAQI
30th Jun 2025588 PMAQI
30th Jun 2025569 PMAQI
30th Jun 20255610 PMAQI
30th Jun 20255611 PMAQI
1st Jul 20255412 AMAQI
1st Jul 2025521 AMAQI
1st Jul 2025512 AMAQI
1st Jul 2025513 AMAQI

25°C20/31°C

1st Jul 2025524 AMAQI
1st Jul 2025535 AMAQI
1st Jul 2025546 AMAQI
1st Jul 2025547 AMAQI
1st Jul 2025538 AMAQI
1st Jul 2025609 AMAQI
1st Jul 20256210 AMAQI
1st Jul 20256411 AMAQI
1st Jul 20256312 PMAQI
1st Jul 2025631 PMAQI
1st Jul 2025632 PMAQI
1st Jul 2025643 PMAQI
1st Jul 2025654 PMAQI
1st Jul 2025665 PMAQI
1st Jul 2025646 PMAQI
1st Jul 2025647 PMAQI
1st Jul 2025648 PMAQI
1st Jul 2025589 PMAQI
1st Jul 20255810 PMAQI
1st Jul 20255911 PMAQI
2nd Jul 20255912 AMAQI
2nd Jul 2025551 AMAQI
2nd Jul 2025532 AMAQI
2nd Jul 2025533 AMAQI

26°C22/30°C

2nd Jul 2025544 AMAQI
2nd Jul 2025555 AMAQI
2nd Jul 2025556 AMAQI
2nd Jul 2025557 AMAQI
2nd Jul 2025558 AMAQI
2nd Jul 2025689 AMAQI
2nd Jul 20257310 AMAQI
2nd Jul 20257411 AMAQI
2nd Jul 20257912 PMAQI
2nd Jul 2025791 PMAQI
2nd Jul 2025792 PMAQI
2nd Jul 2025803 PMAQI
2nd Jul 2025874 PMAQI
2nd Jul 2025925 PMAQI
2nd Jul 2025946 PMAQI
2nd Jul 2025917 PMAQI
2nd Jul 2025928 PMAQI
2nd Jul 2025919 PMAQI
2nd Jul 20259110 PMAQI
2nd Jul 20259111 PMAQI
3rd Jul 20259112 AMAQI
3rd Jul 2025911 AMAQI
3rd Jul 2025632 AMAQI
3rd Jul 2025553 AMAQI

26°C22/31°C

3rd Jul 2025544 AMAQI
3rd Jul 2025545 AMAQI
3rd Jul 2025546 AMAQI
3rd Jul 2025547 AMAQI
3rd Jul 2025548 AMAQI
3rd Jul 2025699 AMAQI
3rd Jul 20258310 AMAQI
3rd Jul 20258411 AMAQI
3rd Jul 20258412 PMAQI
3rd Jul 2025841 PMAQI
3rd Jul 2025842 PMAQI
3rd Jul 2025843 PMAQI
3rd Jul 2025844 PMAQI
3rd Jul 2025845 PMAQI
3rd Jul 2025826 PMAQI
3rd Jul 2025777 PMAQI
3rd Jul 2025748 PMAQI
3rd Jul 2025689 PMAQI
3rd Jul 20256710 PMAQI
3rd Jul 20256611 PMAQI
4th Jul 20256612 AMAQI
4th Jul 2025661 AMAQI
4th Jul 2025672 AMAQI
4th Jul 2025663 AMAQI

26°C21/32°C

4th Jul 2025684 AMAQI
4th Jul 2025675 AMAQI
4th Jul 2025676 AMAQI
4th Jul 2025677 AMAQI
4th Jul 2025678 AMAQI
4th Jul 2025749 AMAQI
4th Jul 20257710 AMAQI
4th Jul 20257411 AMAQI
4th Jul 20257812 PMAQI
4th Jul 2025791 PMAQI
4th Jul 2025782 PMAQI
4th Jul 2025783 PMAQI
4th Jul 2025794 PMAQI
4th Jul 2025825 PMAQI
4th Jul 2025896 PMAQI
4th Jul 2025887 PMAQI
4th Jul 2025868 PMAQI
4th Jul 2025799 PMAQI
4th Jul 20257910 PMAQI
4th Jul 20258111 PMAQI
5th Jul 20257812 AMAQI
5th Jul 2025741 AMAQI
5th Jul 2025672 AMAQI
5th Jul 2025673 AMAQI

26°C23/31°C

5th Jul 2025674 AMAQI
5th Jul 2025695 AMAQI
5th Jul 2025696 AMAQI
5th Jul 2025697 AMAQI
5th Jul 2025698 AMAQI
5th Jul 20251079 AMAQI
5th Jul 202511310 AMAQI
5th Jul 202511211 AMAQI
5th Jul 202510812 PMAQI
5th Jul 20251021 PMAQI
5th Jul 2025972 PMAQI
5th Jul 20251013 PMAQI
5th Jul 20251104 PMAQI
5th Jul 20251105 PMAQI
5th Jul 20251086 PMAQI
5th Jul 20251087 PMAQI
5th Jul 20251018 PMAQI
5th Jul 2025789 PMAQI
5th Jul 20258210 PMAQI
5th Jul 20258111 PMAQI
6th Jul 20258112 AMAQI
6th Jul 2025761 AMAQI
6th Jul 2025712 AMAQI
6th Jul 2025713 AMAQI

25°C22/31°C

6th Jul 2025734 AMAQI
6th Jul 2025765 AMAQI
6th Jul 2025766 AMAQI
6th Jul 2025767 AMAQI
6th Jul 2025768 AMAQI
6th Jul 2025779 AMAQI
6th Jul 20257810 AMAQI
6th Jul 20258211 AMAQI
6th Jul 20257812 PMAQI
6th Jul 2025771 PMAQI
6th Jul 2025732 PMAQI
6th Jul 2025743 PMAQI
6th Jul 2025754 PMAQI
6th Jul 2025795 PMAQI
6th Jul 2025846 PMAQI
6th Jul 2025837 PMAQI
6th Jul 2025828 PMAQI
6th Jul 2025759 PMAQI
6th Jul 20258010 PMAQI
6th Jul 20257011 PMAQI
7th Jul 20257212 AMAQI
7th Jul 2025721 AMAQI
7th Jul 2025752 AMAQI
7th Jul 2025743 AMAQI

26°C23/30°C

7th Jul 2025744 AMAQI
7th Jul 2025745 AMAQI
7th Jul 2025746 AMAQI
7th Jul 2025757 AMAQI
7th Jul 2025748 AMAQI
7th Jul 2025619 AMAQI
7th Jul 20255610 AMAQI
7th Jul 20255611 AMAQI
7th Jul 20255812 PMAQI
7th Jul 2025611 PMAQI
7th Jul 2025592 PMAQI
7th Jul 2025613 PMAQI
7th Jul 2025624 PMAQI
7th Jul 2025635 PMAQI
7th Jul 2025646 PMAQI
7th Jul 2025667 PMAQI
7th Jul 2025678 PMAQI
7th Jul 2025709 PMAQI
7th Jul 20256910 PMAQI
7th Jul 20257011 PMAQI
8th Jul 20256912 AMAQI
8th Jul 2025701 AMAQI
8th Jul 2025722 AMAQI
8th Jul 2025723 AMAQI

26°C23/31°C

8th Jul 2025714 AMAQI
8th Jul 2025695 AMAQI
8th Jul 2025696 AMAQI
8th Jul 2025697 AMAQI
8th Jul 2025698 AMAQI
8th Jul 2025709 AMAQI
8th Jul 20257210 AMAQI
8th Jul 20257011 AMAQI
8th Jul 20257012 PMAQI
8th Jul 2025671 PMAQI
8th Jul 2025712 PMAQI
8th Jul 2025773 PMAQI
8th Jul 2025764 PMAQI
8th Jul 2025745 PMAQI
8th Jul 2025776 PMAQI
8th Jul 2025777 PMAQI
8th Jul 2025768 PMAQI
8th Jul 2025719 PMAQI
8th Jul 20257110 PMAQI
8th Jul 20257111 PMAQI
9th Jul 20257112 AMAQI
9th Jul 2025701 AMAQI
9th Jul 2025692 AMAQI
9th Jul 2025703 AMAQI

26°C22/32°C

9th Jul 2025694 AMAQI
9th Jul 2025695 AMAQI
9th Jul 2025686 AMAQI
9th Jul 2025697 AMAQI
9th Jul 2025698 AMAQI
9th Jul 2025779 AMAQI
9th Jul 20258410 AMAQI
9th Jul 20259011 AMAQI
9th Jul 20259112 PMAQI
9th Jul 2025861 PMAQI
9th Jul 2025852 PMAQI
9th Jul 2025843 PMAQI
9th Jul 2025844 PMAQI
9th Jul 2025835 PMAQI
9th Jul 2025796 PMAQI
9th Jul 2025807 PMAQI
9th Jul 2025748 PMAQI
9th Jul 2025719 PMAQI
9th Jul 20256910 PMAQI
9th Jul 20256811 PMAQI
10th Jul 20256712 AMAQI
10th Jul 2025671 AMAQI
10th Jul 2025692 AMAQI
10th Jul 2025683 AMAQI

26°C21/32°C

10th Jul 2025704 AMAQI
10th Jul 2025715 AMAQI
10th Jul 2025716 AMAQI
10th Jul 2025717 AMAQI
10th Jul 2025718 AMAQI
10th Jul 2025629 AMAQI
10th Jul 20256610 AMAQI
10th Jul 20257111 AMAQI
10th Jul 20256712 PMAQI
10th Jul 2025601 PMAQI
10th Jul 2025492 PMAQI
10th Jul 2025503 PMAQI
10th Jul 2025464 PMAQI
10th Jul 2025465 PMAQI
10th Jul 2025466 PMAQI
10th Jul 2025447 PMAQI
10th Jul 2025468 PMAQI
10th Jul 2025599 PMAQI
10th Jul 20256010 PMAQI
10th Jul 20255911 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025611 AMAQI
11th Jul 2025662 AMAQI
11th Jul 2025693 AMAQI

25°C20/30°C

11th Jul 2025684 AMAQI
11th Jul 2025685 AMAQI
11th Jul 2025686 AMAQI
11th Jul 2025687 AMAQI
11th Jul 2025688 AMAQI
11th Jul 2025379 AMAQI
11th Jul 20252910 AMAQI
11th Jul 20252611 AMAQI
11th Jul 20252912 PMAQI
11th Jul 2025351 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025363 PMAQI
11th Jul 2025344 PMAQI
11th Jul 2025375 PMAQI
11th Jul 2025366 PMAQI
11th Jul 2025347 PMAQI
11th Jul 2025448 PMAQI
11th Jul 2025559 PMAQI
11th Jul 20255510 PMAQI
11th Jul 20255511 PMAQI
12th Jul 20255512 AMAQI
12th Jul 2025591 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI

25°C20/31°C

12th Jul 2025654 AMAQI
12th Jul 2025625 AMAQI
12th Jul 2025626 AMAQI
12th Jul 2025627 AMAQI
12th Jul 2025628 AMAQI
12th Jul 2025359 AMAQI
12th Jul 20252810 AMAQI
12th Jul 20252811 AMAQI
12th Jul 20252912 PMAQI
12th Jul 2025361 PMAQI
12th Jul 2025362 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025354 PMAQI
12th Jul 2025385 PMAQI
12th Jul 2025396 PMAQI
12th Jul 2025377 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255311 PMAQI
13th Jul 20255212 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025623 AMAQI

24°C19/29°C

13th Jul 2025614 AMAQI
13th Jul 2025595 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025597 AMAQI
13th Jul 2025598 AMAQI
13th Jul 2025429 AMAQI
13th Jul 20252610 AMAQI
13th Jul 20253111 AMAQI
13th Jul 20253112 PMAQI
13th Jul 2025361 PMAQI
13th Jul 2025372 PMAQI
13th Jul 2025383 PMAQI
13th Jul 2025384 PMAQI
13th Jul 2025365 PMAQI
13th Jul 2025366 PMAQI
13th Jul 2025357 PMAQI
13th Jul 2025408 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255211 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025593 AMAQI

25°C19/32°C

14th Jul 2025584 AMAQI
14th Jul 2025565 AMAQI
14th Jul 2025566 AMAQI
14th Jul 2025567 AMAQI
14th Jul 2025568 AMAQI
14th Jul 2025339 AMAQI
14th Jul 20252210 AMAQI
14th Jul 20252011 AMAQI
14th Jul 20252112 PMAQI
14th Jul 2025231 PMAQI
14th Jul 2025222 PMAQI
14th Jul 2025213 PMAQI
14th Jul 2025244 PMAQI
14th Jul 2025305 PMAQI
14th Jul 2025316 PMAQI
14th Jul 2025277 PMAQI
14th Jul 2025358 PMAQI
14th Jul 2025479 PMAQI
14th Jul 20254710 PMAQI
14th Jul 20254711 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025511 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI

28°C21/33°C

15th Jul 2025554 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025536 AMAQI
15th Jul 2025537 AMAQI
15th Jul 2025538 AMAQI
15th Jul 2025309 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252711 AMAQI
15th Jul 20252812 PMAQI
15th Jul 2025301 PMAQI
15th Jul 2025282 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025474 PMAQI
15th Jul 2025595 PMAQI
15th Jul 2025536 PMAQI
15th Jul 2025497 PMAQI
15th Jul 2025488 PMAQI
15th Jul 2025529 PMAQI
15th Jul 20255310 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255112 AMAQI
16th Jul 2025511 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025543 AMAQI

26°C23/30°C

16th Jul 2025534 AMAQI
16th Jul 2025505 AMAQI
16th Jul 2025506 AMAQI
16th Jul 2025507 AMAQI
16th Jul 2025508 AMAQI
16th Jul 2025469 AMAQI
16th Jul 20254710 AMAQI
16th Jul 20254611 AMAQI
16th Jul 20254712 PMAQI
16th Jul 2025481 PMAQI
16th Jul 2025532 PMAQI
16th Jul 2025543 PMAQI
16th Jul 2025514 PMAQI
16th Jul 2025535 PMAQI
16th Jul 2025536 PMAQI
16th Jul 2025547 PMAQI
16th Jul 2025558 PMAQI
16th Jul 2025549 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20254912 AMAQI
17th Jul 2025511 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI

29°C23/36°C

17th Jul 2025524 AMAQI
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20252611 AMAQI
17th Jul 20252712 PMAQI
17th Jul 2025261 PMAQI
17th Jul 2025252 PMAQI
17th Jul 2025243 PMAQI
17th Jul 2025244 PMAQI
17th Jul 2025275 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025277 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025409 PMAQI
17th Jul 20254010 PMAQI
17th Jul 20254111 PMAQI
18th Jul 20254112 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025512 AMAQI
18th Jul 2025513 AMAQI

25°C23/30°C

18th Jul 2025514 AMAQI
18th Jul 2025495 AMAQI
18th Jul 2025486 AMAQI
18th Jul 2025497 AMAQI
18th Jul 2025488 AMAQI
18th Jul 2025309 AMAQI
18th Jul 20252610 AMAQI
18th Jul 20252611 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025281 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025293 PMAQI
18th Jul 2025264 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025326 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025318 PMAQI
18th Jul 2025389 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20254011 PMAQI
19th Jul 20253812 AMAQI
19th Jul 2025431 AMAQI
19th Jul 2025492 AMAQI
19th Jul 2025503 AMAQI

27°C22/35°C

19th Jul 2025484 AMAQI
19th Jul 2025465 AMAQI
19th Jul 2025466 AMAQI
19th Jul 2025467 AMAQI
19th Jul 2025468 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20253310 AMAQI
19th Jul 20252911 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025291 PMAQI
19th Jul 2025292 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025235 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025237 PMAQI
19th Jul 2025328 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025401 AMAQI
20th Jul 2025452 AMAQI
20th Jul 2025473 AMAQI

27°C22/32°C

20th Jul 2025454 AMAQI
20th Jul 2025435 AMAQI
20th Jul 2025436 AMAQI
20th Jul 2025437 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025349 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252912 PMAQI
20th Jul 2025291 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025234 PMAQI
20th Jul 2025275 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025287 PMAQI
20th Jul 2025308 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253610 PMAQI
20th Jul 20253611 PMAQI
21st Jul 20253612 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025432 AMAQI
21st Jul 2025443 AMAQI

27°C22/33°C

21st Jul 2025424 AMAQI
21st Jul 2025415 AMAQI
21st Jul 2025416 AMAQI
21st Jul 2025417 AMAQI
21st Jul 2025418 AMAQI
21st Jul 2025289 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20252911 AMAQI
21st Jul 20252812 PMAQI
21st Jul 2025291 PMAQI
21st Jul 2025272 PMAQI
21st Jul 2025273 PMAQI
21st Jul 2025274 PMAQI
21st Jul 2025275 PMAQI
21st Jul 2025266 PMAQI
21st Jul 2025267 PMAQI
21st Jul 2025298 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253610 PMAQI
21st Jul 20253411 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025341 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025413 AMAQI

28°C23/34°C

22nd Jul 2025404 AMAQI
22nd Jul 2025395 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025309 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20252911 AMAQI
22nd Jul 20252912 PMAQI
22nd Jul 2025341 PMAQI
22nd Jul 2025342 PMAQI
22nd Jul 2025303 PMAQI
22nd Jul 2025324 PMAQI
22nd Jul 2025345 PMAQI
22nd Jul 2025296 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025308 PMAQI
22nd Jul 2025329 PMAQI
22nd Jul 20253210 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025351 AMAQI
23rd Jul 2025392 AMAQI
23rd Jul 2025393 AMAQI

28°C22/34°C

23rd Jul 2025384 AMAQI
23rd Jul 2025375 AMAQI
23rd Jul 2025376 AMAQI
23rd Jul 2025377 AMAQI
23rd Jul 2025378 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20252810 AMAQI
23rd Jul 20253011 AMAQI
23rd Jul 20253512 PMAQI
23rd Jul 2025371 PMAQI
23rd Jul 2025302 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025275 PMAQI
23rd Jul 2025296 PMAQI
23rd Jul 2025317 PMAQI
23rd Jul 2025278 PMAQI
23rd Jul 2025329 PMAQI
23rd Jul 20253110 PMAQI
23rd Jul 20253311 PMAQI
24th Jul 20253312 AMAQI
24th Jul 2025341 AMAQI
24th Jul 2025382 AMAQI
24th Jul 2025373 AMAQI

27°C22/33°C

24th Jul 2025374 AMAQI
24th Jul 2025365 AMAQI
24th Jul 2025366 AMAQI
24th Jul 2025367 AMAQI
24th Jul 2025368 AMAQI
24th Jul 2025349 AMAQI
24th Jul 20253610 AMAQI
24th Jul 20253011 AMAQI
24th Jul 20253212 PMAQI
24th Jul 2025351 PMAQI
24th Jul 2025342 PMAQI
24th Jul 2025313 PMAQI
24th Jul 2025324 PMAQI
24th Jul 2025315 PMAQI
24th Jul 2025296 PMAQI
24th Jul 2025297 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025349 PMAQI
24th Jul 20253410 PMAQI
24th Jul 20253411 PMAQI
25th Jul 20253512 AMAQI
25th Jul 2025361 AMAQI
25th Jul 2025372 AMAQI
25th Jul 2025373 AMAQI

27°C22/34°C

25th Jul 2025364 AMAQI
25th Jul 2025375 AMAQI
25th Jul 2025366 AMAQI
25th Jul 2025367 AMAQI
25th Jul 2025368 AMAQI
25th Jul 2025319 AMAQI
25th Jul 20253210 AMAQI
25th Jul 20253311 AMAQI
25th Jul 20253112 PMAQI
25th Jul 2025321 PMAQI
25th Jul 2025302 PMAQI
25th Jul 2025293 PMAQI
25th Jul 2025304 PMAQI
25th Jul 2025285 PMAQI
25th Jul 2025286 PMAQI
25th Jul 2025307 PMAQI
25th Jul 2025308 PMAQI
25th Jul 2025339 PMAQI
25th Jul 20253410 PMAQI
25th Jul 20253311 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025373 AMAQI

28°C22/34°C

26th Jul 2025364 AMAQI
26th Jul 2025355 AMAQI
26th Jul 2025356 AMAQI
26th Jul 2025357 AMAQI
26th Jul 2025368 AMAQI
26th Jul 2025329 AMAQI
26th Jul 20253310 AMAQI
26th Jul 20253211 AMAQI
26th Jul 20253112 PMAQI
26th Jul 2025301 PMAQI
26th Jul 2025312 PMAQI
26th Jul 2025383 PMAQI
26th Jul 2025374 PMAQI
26th Jul 2025325 PMAQI
26th Jul 2025316 PMAQI
26th Jul 2025337 PMAQI
26th Jul 2025358 PMAQI
26th Jul 2025319 PMAQI
26th Jul 20253410 PMAQI
26th Jul 20253411 PMAQI
27th Jul 20253212 AMAQI
27th Jul 2025321 AMAQI
27th Jul 2025342 AMAQI
27th Jul 2025353 AMAQI

28°C22/34°C

27th Jul 2025354 AMAQI
27th Jul 2025355 AMAQI
27th Jul 2025346 AMAQI
27th Jul 2025347 AMAQI
27th Jul 2025348 AMAQI
27th Jul 2025319 AMAQI
27th Jul 20252610 AMAQI
27th Jul 20252511 AMAQI
27th Jul 20252312 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025233 PMAQI
27th Jul 2025254 PMAQI
27th Jul 2025235 PMAQI
27th Jul 2025236 PMAQI
27th Jul 2025267 PMAQI
27th Jul 2025268 PMAQI
27th Jul 2025299 PMAQI
27th Jul 20252910 PMAQI
27th Jul 20252911 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025321 AMAQI
28th Jul 2025352 AMAQI
28th Jul 2025353 AMAQI

28°C23/33°C

28th Jul 2025344 AMAQI
28th Jul 2025335 AMAQI
28th Jul 2025336 AMAQI
28th Jul 2025337 AMAQI
28th Jul 2025328 AMAQI
28th Jul 2025269 AMAQI
28th Jul 20252910 AMAQI
28th Jul 20253111 AMAQI
28th Jul 20253112 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025282 PMAQI
28th Jul 2025253 PMAQI
28th Jul 2025244 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025306 PMAQI
28th Jul 2025277 PMAQI
28th Jul 2025298 PMAQI
28th Jul 2025319 PMAQI
28th Jul 20253110 PMAQI
28th Jul 20253011 PMAQI
29th Jul 20252912 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025332 AMAQI
29th Jul 2025333 AMAQI

28°C23/34°C

29th Jul 2025334 AMAQI
29th Jul 2025325 AMAQI
29th Jul 2025326 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025328 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20253210 AMAQI
29th Jul 20253711 AMAQI
29th Jul 20253812 PMAQI
29th Jul 2025371 PMAQI
29th Jul 2025412 PMAQI
29th Jul 2025353 PMAQI
29th Jul 2025364 PMAQI
29th Jul 2025355 PMAQI
29th Jul 2025306 PMAQI
29th Jul 2025327 PMAQI
29th Jul 2025338 PMAQI
29th Jul 2025319 PMAQI
29th Jul 20253310 PMAQI
29th Jul 20253211 PMAQI
30th Jul 20253212 AMAQI
30th Jul 2025341 AMAQI
30th Jul 2025332 AMAQI
30th Jul 2025333 AMAQI

28°C22/34°C

30th Jul 2025334 AMAQI
4 AM
30th Jul 2025345 AMAQI
30th Jul 2025336 AMAQI
30th Jul 2025337 AMAQI
30th Jul 2025338 AMAQI
30th Jul 2025349 AMAQI
30th Jul 20253510 AMAQI
30th Jul 20254011 AMAQI
11 AM
30th Jul 20254412 PMAQI
30th Jul 2025441 PMAQI
30th Jul 2025412 PMAQI
30th Jul 2025443 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025365 PMAQI
30th Jul 2025366 PMAQI
30th Jul 2025387 PMAQI
7 PM
11 PM
3 AM

--°C/°C

Day time
Avg. Highest Time
4 AM - 8 AM

52AQI

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

47AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 52), while the lowest AQI was between 9 AM to 7 PM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 3 AM

52AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM - 11 PM

51AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 52), while the lowest AQI was between 8 PM to 11 PM (Avg. 51).

2025 Days Vs Air Quality

Naka, Niigata, Japan

2025

85%

177

15%

32

Total number of days with different AQI categories in last 211 days in 2025 (154 days remaining)

Good
177 Days
Moderate
32 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 85%

Health Risk Level:

Low

In 2025, 85% of 211 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

Naka, Niigata, 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
30AQI
2nd January 2025
29AQI
3rd January 2025
28AQI
4th January 2025
28AQI
5th January 2025
26AQI
6th January 2025
31AQI
7th January 2025
30AQI
8th January 2025
28AQI
9th January 2025
29AQI
10th January 2025
28AQI
11th January 2025
29AQI
12th January 2025
31AQI
13th January 2025
28AQI
14th January 2025
32AQI
15th January 2025
26AQI
16th January 2025
27AQI
17th January 2025
27AQI
18th January 2025
29AQI
19th January 2025
30AQI
20th January 2025
36AQI
21st January 2025
42AQI
22nd January 2025
35AQI
23rd January 2025
43AQI
24th January 2025
37AQI
25th January 2025
35AQI
26th January 2025
30AQI
27th January 2025
27AQI
28th January 2025
30AQI
29th January 2025
29AQI
30th January 2025
31AQI
31st January 2025
30AQI
1st February 2025
31AQI
2nd February 2025
30AQI
3rd February 2025
30AQI
4th February 2025
30AQI
5th February 2025
31AQI
6th February 2025
31AQI
7th February 2025
32AQI
8th February 2025
31AQI
9th February 2025
32AQI
10th February 2025
30AQI
11th February 2025
32AQI
12th February 2025
30AQI
13th February 2025
33AQI
14th February 2025
32AQI
15th February 2025
31AQI
16th February 2025
35AQI
17th February 2025
39AQI
18th February 2025
32AQI
19th February 2025
32AQI
20th February 2025
32AQI
21st February 2025
32AQI
22nd February 2025
32AQI
23rd February 2025
33AQI
24th February 2025
32AQI
25th February 2025
34AQI
26th February 2025
45AQI
27th February 2025
47AQI
28th February 2025
54AQI
1st March 2025
51AQI
2nd March 2025
53AQI
3rd March 2025
38AQI
4th March 2025
38AQI
5th March 2025
26AQI
6th March 2025
32AQI
7th March 2025
34AQI
8th March 2025
35AQI
9th March 2025
34AQI
10th March 2025
40AQI
11th March 2025
41AQI
12th March 2025
39AQI
13th March 2025
50AQI
14th March 2025
41AQI
15th March 2025
38AQI
16th March 2025
25AQI
17th March 2025
25AQI
18th March 2025
27AQI
19th March 2025
23AQI
20th March 2025
32AQI
21st March 2025
46AQI
22nd March 2025
50AQI
23rd March 2025
56AQI
24th March 2025
56AQI
25th March 2025
64AQI
26th March 2025
61AQI
27th March 2025
65AQI
28th March 2025
52AQI
29th March 2025
39AQI
30th March 2025
34AQI
31st March 2025
33AQI
1st April 2025
28AQI
2nd April 2025
25AQI
3rd April 2025
21AQI
4th April 2025
21AQI
5th April 2025
32AQI
6th April 2025
31AQI
7th April 2025
34AQI
8th April 2025
41AQI
9th April 2025
31AQI
10th April 2025
43AQI
11th April 2025
42AQI
12th April 2025
43AQI
13th April 2025
30AQI
14th April 2025
29AQI
15th April 2025
24AQI
16th April 2025
33AQI
17th April 2025
43AQI
18th April 2025
52AQI
19th April 2025
57AQI
20th April 2025
50AQI
21st April 2025
44AQI
22nd April 2025
49AQI
23rd April 2025
35AQI
24th April 2025
26AQI
25th April 2025
33AQI
26th April 2025
46AQI
27th April 2025
46AQI
28th April 2025
50AQI
29th April 2025
39AQI
30th April 2025
33AQI
1st May 2025
46AQI
2nd May 2025
28AQI
3rd May 2025
37AQI
4th May 2025
34AQI
5th May 2025
38AQI
6th May 2025
34AQI
7th May 2025
31AQI
8th May 2025
32AQI
9th May 2025
37AQI
10th May 2025
28AQI
11th May 2025
30AQI
12th May 2025
32AQI
13th May 2025
47AQI
14th May 2025
47AQI
15th May 2025
53AQI
16th May 2025
56AQI
17th May 2025
40AQI
18th May 2025
52AQI
19th May 2025
48AQI
20th May 2025
57AQI
21st May 2025
59AQI
22nd May 2025
46AQI
23rd May 2025
48AQI
24th May 2025
43AQI
25th May 2025
35AQI
26th May 2025
33AQI
27th May 2025
35AQI
28th May 2025
37AQI
29th May 2025
37AQI
30th May 2025
33AQI
31st May 2025
25AQI
1st June 2025
25AQI
2nd June 2025
37AQI
3rd June 2025
44AQI
4th June 2025
38AQI
5th June 2025
40AQI
6th June 2025
43AQI
7th June 2025
51AQI
8th June 2025
55AQI
9th June 2025
58AQI
10th June 2025
57AQI
11th June 2025
46AQI
12th June 2025
45AQI
13th June 2025
39AQI
14th June 2025
40AQI
15th June 2025
28AQI
16th June 2025
32AQI
17th June 2025
39AQI
18th June 2025
43AQI
19th June 2025
48AQI
20th June 2025
51AQI
21st June 2025
56AQI
22nd June 2025
63AQI
23rd June 2025
44AQI
24th June 2025
42AQI
25th June 2025
46AQI
26th June 2025
37AQI
27th June 2025
53AQI
28th June 2025
40AQI
29th June 2025
41AQI
30th June 2025
50AQI
1st July 2025
50AQI
2nd July 2025
66AQI
3rd July 2025
63AQI
4th July 2025
68AQI
5th July 2025
63AQI
6th July 2025
56AQI
7th July 2025
58AQI
8th July 2025
58AQI
9th July 2025
53AQI
10th July 2025
47AQI
11th July 2025
45AQI
12th July 2025
45AQI
13th July 2025
48AQI
14th July 2025
37AQI
15th July 2025
35AQI
16th July 2025
42AQI
17th July 2025
33AQI
18th July 2025
36AQI
19th July 2025
37AQI
20th July 2025
40AQI
21st July 2025
41AQI
22nd July 2025
40AQI
23rd July 2025
41AQI
24th July 2025
45AQI
25th July 2025
48AQI
26th July 2025
49AQI
27th July 2025
41AQI
28th July 2025
43AQI

31AQI

34AQI

41AQI

37AQI

40AQI

44AQI

47AQI

No. of days

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

202539AQI

31
27
1
23
8
28
2
26
5
22
8
20
8
177
32

Highest AQI recorded in

July

47AQI

Lowest AQI recorded in

January

31AQI

202435AQI

31
29
26
5
18
12
30
1
19
11
28
3
31
30
31
29
1
31
333
33

Highest AQI recorded in

April

49AQI

Lowest AQI recorded in

December

26AQI

202336AQI

31
26
2
23
8
23
7
25
6
25
5
25
6
31
30
31
27
2
31
328
36

Highest AQI recorded in

April

45AQI

Lowest AQI recorded in

October

28AQI

202240AQI

31
19
2
20
5
1
5
22
8
19
12
21
9
22
1
26
2
30
1
30
31
272
39
1
5

Highest AQI recorded in

March

69AQI

Lowest AQI recorded in

August

23AQI

202134AQI

28
3
23
5
26
3
16
5
27
4
23
7
31
30
1
30
31
29
1
18
312
29

Highest AQI recorded in

June

43AQI

Lowest AQI recorded in

December

27AQI

202029AQI

13
21
18
27
3
27
2
16
13
2
18
1
30
1
27
3
31
228
23
2

Highest AQI recorded in

August

50AQI

Lowest AQI recorded in

March

18AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
40AQI
Least Polluted Year Recorded
2020(Avg.)
29AQI

Naka's annual 2025 AQI (39) shows an average percentage change of 13.9% (worsened AQI) compared to previous years: 2020 (29), 2021 (34), 2022 (40), 2023 (36), 2024 (35).