Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Joetsu, 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

Joetsu, Niigata, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
14th Jul 2024
77AQI
Lowest AQI recorded on
16th Jul 2024
23AQI

Same Day Analysis (29th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

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

Joetsu, Niigata, Japan

AQI
Day
Night
.

4 AM29th Jul 2025

7 PM

3 AM30th Jul 2025

Day time
Avg. Highest Time
11AM29th Jul

51AQI

Avg. Lowest Time
6PM29th Jul

28AQI

Night time
Avg. Highest Time
2AM30th Jul

45AQI

Avg. Lowest Time
7PM29th Jul

28AQI

In the last 24 hours,

Joetsu's AQI reached its highest point of 51 at 11 AM during the Day, while the lowest point, 28, was recorded at 7 PM during the Night between 29th Jul and 30th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025

Joetsu, 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 2025484 AMAQI
30th Jun 2025495 AMAQI
30th Jun 2025486 AMAQI
30th Jun 2025487 AMAQI
30th Jun 2025478 AMAQI
30th Jun 2025499 AMAQI
30th Jun 20255310 AMAQI
30th Jun 20255811 AMAQI
30th Jun 20256312 PMAQI
30th Jun 2025631 PMAQI
30th Jun 2025632 PMAQI
30th Jun 2025603 PMAQI
30th Jun 2025584 PMAQI
30th Jun 2025625 PMAQI
30th Jun 2025636 PMAQI
30th Jun 2025617 PMAQI
30th Jun 2025598 PMAQI
30th Jun 2025549 PMAQI
30th Jun 20255210 PMAQI
30th Jun 20255311 PMAQI
1st Jul 20255312 AMAQI
1st Jul 2025501 AMAQI
1st Jul 2025502 AMAQI
1st Jul 2025483 AMAQI

23°C20/27°C

1st Jul 2025504 AMAQI
1st Jul 2025525 AMAQI
1st Jul 2025526 AMAQI
1st Jul 2025527 AMAQI
1st Jul 2025528 AMAQI
1st Jul 2025559 AMAQI
1st Jul 20255610 AMAQI
1st Jul 20255911 AMAQI
1st Jul 20255912 PMAQI
1st Jul 2025581 PMAQI
1st Jul 2025582 PMAQI
1st Jul 2025553 PMAQI
1st Jul 2025554 PMAQI
1st Jul 2025555 PMAQI
1st Jul 2025526 PMAQI
1st Jul 2025507 PMAQI
1st Jul 2025468 PMAQI
1st Jul 2025469 PMAQI
1st Jul 20254810 PMAQI
1st Jul 20255011 PMAQI
2nd Jul 20255212 AMAQI
2nd Jul 2025521 AMAQI
2nd Jul 2025522 AMAQI
2nd Jul 2025513 AMAQI

24°C20/27°C

2nd Jul 2025524 AMAQI
2nd Jul 2025525 AMAQI
2nd Jul 2025526 AMAQI
2nd Jul 2025527 AMAQI
2nd Jul 2025528 AMAQI
2nd Jul 2025569 AMAQI
2nd Jul 20256110 AMAQI
2nd Jul 20256711 AMAQI
2nd Jul 20257812 PMAQI
2nd Jul 2025811 PMAQI
2nd Jul 2025812 PMAQI
2nd Jul 2025703 PMAQI
2nd Jul 2025614 PMAQI
2nd Jul 2025635 PMAQI
2nd Jul 2025696 PMAQI
2nd Jul 2025737 PMAQI
2nd Jul 2025768 PMAQI
2nd Jul 2025749 PMAQI
2nd Jul 20257410 PMAQI
2nd Jul 20257411 PMAQI
3rd Jul 20257412 AMAQI
3rd Jul 2025741 AMAQI
3rd Jul 2025582 AMAQI
3rd Jul 2025523 AMAQI

24°C20/27°C

3rd Jul 2025524 AMAQI
3rd Jul 2025525 AMAQI
3rd Jul 2025526 AMAQI
3rd Jul 2025527 AMAQI
3rd Jul 2025528 AMAQI
3rd Jul 2025529 AMAQI
3rd Jul 20256010 AMAQI
3rd Jul 20257511 AMAQI
3rd Jul 20257512 PMAQI
3rd Jul 2025751 PMAQI
3rd Jul 2025752 PMAQI
3rd Jul 2025753 PMAQI
3rd Jul 2025754 PMAQI
3rd Jul 2025755 PMAQI
3rd Jul 2025836 PMAQI
3rd Jul 2025767 PMAQI
3rd Jul 2025718 PMAQI
3rd Jul 2025659 PMAQI
3rd Jul 20256510 PMAQI
3rd Jul 20256411 PMAQI
4th Jul 20256712 AMAQI
4th Jul 2025651 AMAQI
4th Jul 2025572 AMAQI
4th Jul 2025573 AMAQI

24°C20/28°C

4th Jul 2025574 AMAQI
4th Jul 2025605 AMAQI
4th Jul 2025596 AMAQI
4th Jul 2025597 AMAQI
4th Jul 2025588 AMAQI
4th Jul 2025689 AMAQI
4th Jul 20257410 AMAQI
4th Jul 20257911 AMAQI
4th Jul 20258012 PMAQI
4th Jul 2025761 PMAQI
4th Jul 2025742 PMAQI
4th Jul 2025743 PMAQI
4th Jul 2025764 PMAQI
4th Jul 2025845 PMAQI
4th Jul 2025906 PMAQI
4th Jul 2025897 PMAQI
4th Jul 2025818 PMAQI
4th Jul 2025689 PMAQI
4th Jul 20256710 PMAQI
4th Jul 20256811 PMAQI
5th Jul 20256812 AMAQI
5th Jul 2025641 AMAQI
5th Jul 2025582 AMAQI
5th Jul 2025593 AMAQI

25°C21/29°C

5th Jul 2025604 AMAQI
5th Jul 2025625 AMAQI
5th Jul 2025616 AMAQI
5th Jul 2025627 AMAQI
5th Jul 2025628 AMAQI
5th Jul 2025719 AMAQI
5th Jul 20257310 AMAQI
5th Jul 20257311 AMAQI
5th Jul 20257112 PMAQI
5th Jul 2025701 PMAQI
5th Jul 2025702 PMAQI
5th Jul 2025763 PMAQI
5th Jul 2025774 PMAQI
5th Jul 2025765 PMAQI
5th Jul 2025796 PMAQI
5th Jul 2025777 PMAQI
5th Jul 2025758 PMAQI
5th Jul 2025699 PMAQI
5th Jul 20256610 PMAQI
5th Jul 20256711 PMAQI
6th Jul 20256712 AMAQI
6th Jul 2025611 AMAQI
6th Jul 2025602 AMAQI
6th Jul 2025613 AMAQI

24°C21/28°C

6th Jul 2025614 AMAQI
6th Jul 2025605 AMAQI
6th Jul 2025606 AMAQI
6th Jul 2025607 AMAQI
6th Jul 2025608 AMAQI
6th Jul 2025639 AMAQI
6th Jul 20256510 AMAQI
6th Jul 20255811 AMAQI
6th Jul 20255412 PMAQI
6th Jul 2025521 PMAQI
6th Jul 2025512 PMAQI
6th Jul 2025503 PMAQI
6th Jul 2025514 PMAQI
6th Jul 2025535 PMAQI
6th Jul 2025546 PMAQI
6th Jul 2025557 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025599 PMAQI
6th Jul 20255910 PMAQI
6th Jul 20255811 PMAQI
7th Jul 20255812 AMAQI
7th Jul 2025591 AMAQI
7th Jul 2025612 AMAQI
7th Jul 2025613 AMAQI

25°C22/28°C

7th Jul 2025614 AMAQI
7th Jul 2025605 AMAQI
7th Jul 2025606 AMAQI
7th Jul 2025607 AMAQI
7th Jul 2025608 AMAQI
7th Jul 2025579 AMAQI
7th Jul 20255710 AMAQI
7th Jul 20255811 AMAQI
7th Jul 20255812 PMAQI
7th Jul 2025571 PMAQI
7th Jul 2025582 PMAQI
7th Jul 2025613 PMAQI
7th Jul 2025604 PMAQI
7th Jul 2025635 PMAQI
7th Jul 2025656 PMAQI
7th Jul 2025637 PMAQI
7th Jul 2025618 PMAQI
7th Jul 2025599 PMAQI
7th Jul 20255810 PMAQI
7th Jul 20255811 PMAQI
8th Jul 20255912 AMAQI
8th Jul 2025591 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025603 AMAQI

25°C21/28°C

8th Jul 2025604 AMAQI
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025588 AMAQI
8th Jul 2025649 AMAQI
8th Jul 20256610 AMAQI
8th Jul 20257011 AMAQI
8th Jul 20256812 PMAQI
8th Jul 2025591 PMAQI
8th Jul 2025582 PMAQI
8th Jul 2025583 PMAQI
8th Jul 2025594 PMAQI
8th Jul 2025565 PMAQI
8th Jul 2025566 PMAQI
8th Jul 2025567 PMAQI
8th Jul 2025578 PMAQI
8th Jul 2025579 PMAQI
8th Jul 20255510 PMAQI
8th Jul 20255511 PMAQI
9th Jul 20255612 AMAQI
9th Jul 2025571 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025583 AMAQI

25°C22/28°C

9th Jul 2025584 AMAQI
9th Jul 2025605 AMAQI
9th Jul 2025596 AMAQI
9th Jul 2025597 AMAQI
9th Jul 2025608 AMAQI
9th Jul 2025529 AMAQI
9th Jul 20255210 AMAQI
9th Jul 20255211 AMAQI
9th Jul 20255212 PMAQI
9th Jul 2025541 PMAQI
9th Jul 2025542 PMAQI
9th Jul 2025533 PMAQI
9th Jul 2025544 PMAQI
9th Jul 2025575 PMAQI
9th Jul 2025526 PMAQI
9th Jul 2025497 PMAQI
9th Jul 2025508 PMAQI
9th Jul 2025559 PMAQI
9th Jul 20255410 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255412 AMAQI
10th Jul 2025561 AMAQI
10th Jul 2025582 AMAQI
10th Jul 2025583 AMAQI

24°C21/28°C

10th Jul 2025584 AMAQI
10th Jul 2025575 AMAQI
10th Jul 2025576 AMAQI
10th Jul 2025587 AMAQI
10th Jul 2025588 AMAQI
10th Jul 2025389 AMAQI
10th Jul 20253810 AMAQI
10th Jul 20254211 AMAQI
10th Jul 20254112 PMAQI
10th Jul 2025421 PMAQI
10th Jul 2025382 PMAQI
10th Jul 2025403 PMAQI
10th Jul 2025374 PMAQI
10th Jul 2025405 PMAQI
10th Jul 2025386 PMAQI
10th Jul 2025387 PMAQI
10th Jul 2025438 PMAQI
10th Jul 2025529 PMAQI
10th Jul 20255310 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255212 AMAQI
11th Jul 2025541 AMAQI
11th Jul 2025572 AMAQI
11th Jul 2025583 AMAQI

24°C20/27°C

11th Jul 2025564 AMAQI
11th Jul 2025565 AMAQI
11th Jul 2025556 AMAQI
11th Jul 2025567 AMAQI
11th Jul 2025568 AMAQI
11th Jul 2025349 AMAQI
11th Jul 20253510 AMAQI
11th Jul 20254111 AMAQI
11th Jul 20254412 PMAQI
11th Jul 2025391 PMAQI
11th Jul 2025382 PMAQI
11th Jul 2025413 PMAQI
11th Jul 2025394 PMAQI
11th Jul 2025385 PMAQI
11th Jul 2025386 PMAQI
11th Jul 2025367 PMAQI
11th Jul 2025408 PMAQI
11th Jul 2025529 PMAQI
11th Jul 20255010 PMAQI
11th Jul 20255011 PMAQI
12th Jul 20255012 AMAQI
12th Jul 2025511 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025553 AMAQI

23°C20/27°C

12th Jul 2025554 AMAQI
12th Jul 2025545 AMAQI
12th Jul 2025546 AMAQI
12th Jul 2025547 AMAQI
12th Jul 2025548 AMAQI
12th Jul 2025349 AMAQI
12th Jul 20252910 AMAQI
12th Jul 20253411 AMAQI
12th Jul 20254112 PMAQI
12th Jul 2025401 PMAQI
12th Jul 2025382 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025364 PMAQI
12th Jul 2025405 PMAQI
12th Jul 2025386 PMAQI
12th Jul 2025407 PMAQI
12th Jul 2025438 PMAQI
12th Jul 2025519 PMAQI
12th Jul 20255010 PMAQI
12th Jul 20255111 PMAQI
13th Jul 20254812 AMAQI
13th Jul 2025511 AMAQI
13th Jul 2025542 AMAQI
13th Jul 2025543 AMAQI

23°C20/25°C

13th Jul 2025544 AMAQI
13th Jul 2025525 AMAQI
13th Jul 2025526 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025528 AMAQI
13th Jul 2025449 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20254011 AMAQI
13th Jul 20254212 PMAQI
13th Jul 2025421 PMAQI
13th Jul 2025482 PMAQI
13th Jul 2025493 PMAQI
13th Jul 2025474 PMAQI
13th Jul 2025465 PMAQI
13th Jul 2025476 PMAQI
13th Jul 2025477 PMAQI
13th Jul 2025478 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255210 PMAQI
13th Jul 20255111 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025521 AMAQI
14th Jul 2025532 AMAQI
14th Jul 2025533 AMAQI

24°C20/28°C

14th Jul 2025524 AMAQI
14th Jul 2025525 AMAQI
14th Jul 2025526 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025528 AMAQI
14th Jul 2025429 AMAQI
14th Jul 20253810 AMAQI
14th Jul 20253511 AMAQI
14th Jul 20253112 PMAQI
14th Jul 2025411 PMAQI
14th Jul 2025262 PMAQI
14th Jul 2025283 PMAQI
14th Jul 2025344 PMAQI
14th Jul 2025385 PMAQI
14th Jul 2025356 PMAQI
14th Jul 2025317 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025459 PMAQI
14th Jul 20254510 PMAQI
14th Jul 20254611 PMAQI
15th Jul 20254412 AMAQI
15th Jul 2025461 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025523 AMAQI

26°C21/32°C

15th Jul 2025524 AMAQI
15th Jul 2025515 AMAQI
15th Jul 2025516 AMAQI
15th Jul 2025517 AMAQI
15th Jul 2025518 AMAQI
15th Jul 2025249 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20252011 AMAQI
15th Jul 20252212 PMAQI
15th Jul 2025241 PMAQI
15th Jul 2025312 PMAQI
15th Jul 2025293 PMAQI
15th Jul 2025284 PMAQI
15th Jul 2025295 PMAQI
15th Jul 2025346 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025318 PMAQI
15th Jul 2025399 PMAQI
15th Jul 20253610 PMAQI
15th Jul 20253511 PMAQI
16th Jul 20253712 AMAQI
16th Jul 2025451 AMAQI
16th Jul 2025502 AMAQI
16th Jul 2025523 AMAQI

24°C22/28°C

16th Jul 2025504 AMAQI
16th Jul 2025465 AMAQI
16th Jul 2025456 AMAQI
16th Jul 2025447 AMAQI
16th Jul 2025458 AMAQI
16th Jul 2025459 AMAQI
16th Jul 20254510 AMAQI
16th Jul 20254311 AMAQI
16th Jul 20254012 PMAQI
16th Jul 2025421 PMAQI
16th Jul 2025442 PMAQI
16th Jul 2025423 PMAQI
16th Jul 2025444 PMAQI
16th Jul 2025435 PMAQI
16th Jul 2025446 PMAQI
16th Jul 2025477 PMAQI
16th Jul 2025468 PMAQI
16th Jul 2025449 PMAQI
16th Jul 20254310 PMAQI
16th Jul 20254511 PMAQI
17th Jul 20254212 AMAQI
17th Jul 2025431 AMAQI
17th Jul 2025482 AMAQI
17th Jul 2025473 AMAQI

26°C21/31°C

17th Jul 2025474 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025466 AMAQI
17th Jul 2025477 AMAQI
17th Jul 2025468 AMAQI
17th Jul 2025229 AMAQI
17th Jul 20251710 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20251412 PMAQI
17th Jul 2025191 PMAQI
17th Jul 2025202 PMAQI
17th Jul 2025223 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025246 PMAQI
17th Jul 2025227 PMAQI
17th Jul 2025258 PMAQI
17th Jul 2025379 PMAQI
17th Jul 20253910 PMAQI
17th Jul 20253711 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025401 AMAQI
18th Jul 2025462 AMAQI
18th Jul 2025473 AMAQI

23°C22/27°C

18th Jul 2025454 AMAQI
18th Jul 2025425 AMAQI
18th Jul 2025406 AMAQI
18th Jul 2025417 AMAQI
18th Jul 2025408 AMAQI
18th Jul 2025269 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252611 AMAQI
18th Jul 20252512 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025333 PMAQI
18th Jul 2025364 PMAQI
18th Jul 2025345 PMAQI
18th Jul 2025346 PMAQI
18th Jul 2025307 PMAQI
18th Jul 2025328 PMAQI
18th Jul 2025359 PMAQI
18th Jul 20253610 PMAQI
18th Jul 20253711 PMAQI
19th Jul 20253712 AMAQI
19th Jul 2025401 AMAQI
19th Jul 2025442 AMAQI
19th Jul 2025443 AMAQI

25°C21/31°C

19th Jul 2025424 AMAQI
19th Jul 2025425 AMAQI
19th Jul 2025416 AMAQI
19th Jul 2025417 AMAQI
19th Jul 2025408 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20253010 AMAQI
19th Jul 20253211 AMAQI
19th Jul 20253112 PMAQI
19th Jul 2025291 PMAQI
19th Jul 2025342 PMAQI
19th Jul 2025343 PMAQI
19th Jul 2025334 PMAQI
19th Jul 2025365 PMAQI
19th Jul 2025336 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253710 PMAQI
19th Jul 20253811 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025391 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025443 AMAQI

25°C22/29°C

20th Jul 2025434 AMAQI
20th Jul 2025425 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025389 AMAQI
20th Jul 20253410 AMAQI
20th Jul 20253311 AMAQI
20th Jul 20253112 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025362 PMAQI
20th Jul 2025343 PMAQI
20th Jul 2025354 PMAQI
20th Jul 2025345 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025337 PMAQI
20th Jul 2025348 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20254010 PMAQI
20th Jul 20254011 PMAQI
21st Jul 20253912 AMAQI
21st Jul 2025391 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025423 AMAQI

26°C22/30°C

21st Jul 2025424 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025397 AMAQI
21st Jul 2025398 AMAQI
21st Jul 2025349 AMAQI
21st Jul 20253410 AMAQI
21st Jul 20253811 AMAQI
21st Jul 20253412 PMAQI
21st Jul 2025361 PMAQI
21st Jul 2025342 PMAQI
21st Jul 2025373 PMAQI
21st Jul 2025394 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025357 PMAQI
21st Jul 2025358 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20253910 PMAQI
21st Jul 20253811 PMAQI
22nd Jul 20253912 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025403 AMAQI

26°C21/31°C

22nd Jul 2025404 AMAQI
22nd Jul 2025405 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025397 AMAQI
22nd Jul 2025408 AMAQI
22nd Jul 2025399 AMAQI
22nd Jul 20254210 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20255112 PMAQI
22nd Jul 2025471 PMAQI
22nd Jul 2025422 PMAQI
22nd Jul 2025443 PMAQI
22nd Jul 2025404 PMAQI
22nd Jul 2025415 PMAQI
22nd Jul 2025466 PMAQI
22nd Jul 2025427 PMAQI
22nd Jul 2025378 PMAQI
22nd Jul 2025419 PMAQI
22nd Jul 20253810 PMAQI
22nd Jul 20253411 PMAQI
23rd Jul 20253612 AMAQI
23rd Jul 2025371 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025403 AMAQI

26°C23/30°C

23rd Jul 2025404 AMAQI
23rd Jul 2025415 AMAQI
23rd Jul 2025416 AMAQI
23rd Jul 2025427 AMAQI
23rd Jul 2025418 AMAQI
23rd Jul 2025419 AMAQI
23rd Jul 20254510 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20255412 PMAQI
23rd Jul 2025531 PMAQI
23rd Jul 2025502 PMAQI
23rd Jul 2025503 PMAQI
23rd Jul 2025484 PMAQI
23rd Jul 2025455 PMAQI
23rd Jul 2025406 PMAQI
23rd Jul 2025337 PMAQI
23rd Jul 2025358 PMAQI
23rd Jul 2025379 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253611 PMAQI
24th Jul 20253612 AMAQI
24th Jul 2025361 AMAQI
24th Jul 2025382 AMAQI
24th Jul 2025403 AMAQI

26°C22/30°C

24th Jul 2025414 AMAQI
24th Jul 2025425 AMAQI
24th Jul 2025426 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025409 AMAQI
24th Jul 20254610 AMAQI
24th Jul 20255411 AMAQI
24th Jul 20255512 PMAQI
24th Jul 2025531 PMAQI
24th Jul 2025562 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025524 PMAQI
24th Jul 2025525 PMAQI
24th Jul 2025526 PMAQI
24th Jul 2025517 PMAQI
24th Jul 2025498 PMAQI
24th Jul 2025469 PMAQI
24th Jul 20254810 PMAQI
24th Jul 20254911 PMAQI
25th Jul 20254912 AMAQI
25th Jul 2025441 AMAQI
25th Jul 2025412 AMAQI
25th Jul 2025403 AMAQI

26°C22/30°C

25th Jul 2025414 AMAQI
25th Jul 2025435 AMAQI
25th Jul 2025446 AMAQI
25th Jul 2025447 AMAQI
25th Jul 2025448 AMAQI
25th Jul 2025519 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20255411 AMAQI
25th Jul 20255612 PMAQI
25th Jul 2025561 PMAQI
25th Jul 2025542 PMAQI
25th Jul 2025533 PMAQI
25th Jul 2025564 PMAQI
25th Jul 2025575 PMAQI
25th Jul 2025546 PMAQI
25th Jul 2025507 PMAQI
25th Jul 2025478 PMAQI
25th Jul 2025489 PMAQI
25th Jul 20254610 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20254612 AMAQI
26th Jul 2025441 AMAQI
26th Jul 2025442 AMAQI
26th Jul 2025453 AMAQI

26°C21/30°C

26th Jul 2025454 AMAQI
26th Jul 2025475 AMAQI
26th Jul 2025466 AMAQI
26th Jul 2025467 AMAQI
26th Jul 2025468 AMAQI
26th Jul 2025539 AMAQI
26th Jul 20255710 AMAQI
26th Jul 20255611 AMAQI
26th Jul 20255412 PMAQI
26th Jul 2025541 PMAQI
26th Jul 2025522 PMAQI
26th Jul 2025483 PMAQI
26th Jul 2025444 PMAQI
26th Jul 2025435 PMAQI
26th Jul 2025396 PMAQI
26th Jul 2025357 PMAQI
26th Jul 2025368 PMAQI
26th Jul 2025399 PMAQI
26th Jul 20254210 PMAQI
26th Jul 20254411 PMAQI
27th Jul 20254312 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025452 AMAQI
27th Jul 2025463 AMAQI

26°C22/31°C

27th Jul 2025464 AMAQI
27th Jul 2025485 AMAQI
27th Jul 2025486 AMAQI
27th Jul 2025487 AMAQI
27th Jul 2025488 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20253610 AMAQI
27th Jul 20253211 AMAQI
27th Jul 20253612 PMAQI
27th Jul 2025361 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025343 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025365 PMAQI
27th Jul 2025386 PMAQI
27th Jul 2025367 PMAQI
27th Jul 2025368 PMAQI
27th Jul 2025399 PMAQI
27th Jul 20253810 PMAQI
27th Jul 20254011 PMAQI
28th Jul 20254012 AMAQI
28th Jul 2025431 AMAQI
28th Jul 2025472 AMAQI
28th Jul 2025473 AMAQI

27°C23/31°C

28th Jul 2025474 AMAQI
28th Jul 2025455 AMAQI
28th Jul 2025456 AMAQI
28th Jul 2025467 AMAQI
28th Jul 2025448 AMAQI
28th Jul 2025369 AMAQI
28th Jul 20253410 AMAQI
28th Jul 20254111 AMAQI
28th Jul 20254612 PMAQI
28th Jul 2025441 PMAQI
28th Jul 2025432 PMAQI
28th Jul 2025383 PMAQI
28th Jul 2025424 PMAQI
28th Jul 2025425 PMAQI
28th Jul 2025436 PMAQI
28th Jul 2025437 PMAQI
28th Jul 2025428 PMAQI
28th Jul 2025429 PMAQI
28th Jul 20254210 PMAQI
28th Jul 20254011 PMAQI
29th Jul 20254112 AMAQI
29th Jul 2025411 AMAQI
29th Jul 2025432 AMAQI
29th Jul 2025443 AMAQI

27°C23/31°C

29th Jul 2025444 AMAQI
29th Jul 2025445 AMAQI
29th Jul 2025446 AMAQI
29th Jul 2025447 AMAQI
29th Jul 2025448 AMAQI
29th Jul 2025389 AMAQI
29th Jul 20254410 AMAQI
29th Jul 20255111 AMAQI
29th Jul 20254812 PMAQI
29th Jul 2025441 PMAQI
29th Jul 2025452 PMAQI
29th Jul 2025363 PMAQI
29th Jul 2025324 PMAQI
29th Jul 2025305 PMAQI
29th Jul 2025286 PMAQI
29th Jul 2025287 PMAQI
29th Jul 2025338 PMAQI
29th Jul 2025359 PMAQI
29th Jul 20253310 PMAQI
29th Jul 20253411 PMAQI
30th Jul 20253612 AMAQI
30th Jul 2025401 AMAQI
30th Jul 2025452 AMAQI
30th Jul 2025443 AMAQI

26°C23/30°C

30th Jul 2025454 AMAQI
4 AM
30th Jul 2025445 AMAQI
30th Jul 2025446 AMAQI
30th Jul 2025447 AMAQI
30th Jul 2025448 AMAQI
30th Jul 2025359 AMAQI
30th Jul 20253410 AMAQI
30th Jul 20253511 AMAQI
11 AM
30th Jul 20254512 PMAQI
30th Jul 2025461 PMAQI
30th Jul 2025462 PMAQI
30th Jul 2025423 PMAQI
30th Jul 2025414 PMAQI
30th Jul 2025425 PMAQI
30th Jul 2025406 PMAQI
30th Jul 2025347 PMAQI
7 PM
30th Jul 2025398 PMAQI
30th Jul 2025459 PMAQI
30th Jul 20254810 PMAQI
30th Jul 20254211 PMAQI
11 PM
3 AM

--°C/°C

Day time
Avg. Highest Time
4 AM - 8 AM

49AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
9 AM - 10 AM

45AQI

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. 49), while the lowest AQI was between 9 AM to 10 AM (Avg. 45).
Night time
Avg. Highest Time
12 AM - 3 AM

49AQI

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

48AQI

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. 49), while the lowest AQI was between 8 PM to 11 PM (Avg. 48).

2025 Days Vs Air Quality

Joetsu, Niigata, Japan

2025

81%

170

19%

40

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

Good
170 Days
Moderate
40 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 81%

Health Risk Level:

Low

In 2025, 81% 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

Joetsu, 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
32AQI
2nd January 2025
30AQI
3rd January 2025
28AQI
4th January 2025
27AQI
5th January 2025
27AQI
6th January 2025
31AQI
7th January 2025
31AQI
8th January 2025
29AQI
9th January 2025
30AQI
10th January 2025
29AQI
11th January 2025
28AQI
12th January 2025
31AQI
13th January 2025
29AQI
14th January 2025
35AQI
15th January 2025
28AQI
16th January 2025
29AQI
17th January 2025
29AQI
18th January 2025
28AQI
19th January 2025
30AQI
20th January 2025
33AQI
21st January 2025
40AQI
22nd January 2025
34AQI
23rd January 2025
46AQI
24th January 2025
40AQI
25th January 2025
38AQI
26th January 2025
31AQI
27th January 2025
28AQI
28th January 2025
31AQI
29th January 2025
30AQI
30th January 2025
33AQI
31st January 2025
31AQI
1st February 2025
34AQI
2nd February 2025
31AQI
3rd February 2025
32AQI
4th February 2025
32AQI
5th February 2025
31AQI
6th February 2025
31AQI
7th February 2025
38AQI
8th February 2025
31AQI
9th February 2025
32AQI
10th February 2025
29AQI
11th February 2025
32AQI
12th February 2025
31AQI
13th February 2025
37AQI
14th February 2025
34AQI
15th February 2025
32AQI
16th February 2025
37AQI
17th February 2025
40AQI
18th February 2025
32AQI
19th February 2025
33AQI
20th February 2025
32AQI
21st February 2025
31AQI
22nd February 2025
32AQI
23rd February 2025
33AQI
24th February 2025
33AQI
25th February 2025
35AQI
26th February 2025
44AQI
27th February 2025
51AQI
28th February 2025
52AQI
1st March 2025
55AQI
2nd March 2025
51AQI
3rd March 2025
39AQI
4th March 2025
39AQI
5th March 2025
27AQI
6th March 2025
33AQI
7th March 2025
38AQI
8th March 2025
37AQI
9th March 2025
35AQI
10th March 2025
42AQI
11th March 2025
42AQI
12th March 2025
38AQI
13th March 2025
54AQI
14th March 2025
44AQI
15th March 2025
39AQI
16th March 2025
29AQI
17th March 2025
28AQI
18th March 2025
30AQI
19th March 2025
24AQI
20th March 2025
36AQI
21st March 2025
49AQI
22nd March 2025
52AQI
23rd March 2025
63AQI
24th March 2025
62AQI
25th March 2025
76AQI
26th March 2025
71AQI
27th March 2025
72AQI
28th March 2025
58AQI
29th March 2025
44AQI
30th March 2025
35AQI
31st March 2025
37AQI
1st April 2025
29AQI
2nd April 2025
25AQI
3rd April 2025
22AQI
4th April 2025
24AQI
5th April 2025
34AQI
6th April 2025
32AQI
7th April 2025
37AQI
8th April 2025
42AQI
9th April 2025
32AQI
10th April 2025
42AQI
11th April 2025
42AQI
12th April 2025
44AQI
13th April 2025
31AQI
14th April 2025
36AQI
15th April 2025
26AQI
16th April 2025
38AQI
17th April 2025
44AQI
18th April 2025
54AQI
19th April 2025
59AQI
20th April 2025
49AQI
21st April 2025
43AQI
22nd April 2025
48AQI
23rd April 2025
37AQI
24th April 2025
25AQI
25th April 2025
38AQI
26th April 2025
47AQI
27th April 2025
48AQI
28th April 2025
49AQI
29th April 2025
46AQI
30th April 2025
43AQI
1st May 2025
53AQI
2nd May 2025
33AQI
3rd May 2025
42AQI
4th May 2025
36AQI
5th May 2025
40AQI
6th May 2025
35AQI
7th May 2025
32AQI
8th May 2025
32AQI
9th May 2025
37AQI
10th May 2025
29AQI
11th May 2025
28AQI
12th May 2025
37AQI
13th May 2025
47AQI
14th May 2025
50AQI
15th May 2025
55AQI
16th May 2025
56AQI
17th May 2025
42AQI
18th May 2025
53AQI
19th May 2025
49AQI
20th May 2025
61AQI
21st May 2025
66AQI
22nd May 2025
49AQI
23rd May 2025
50AQI
24th May 2025
46AQI
25th May 2025
34AQI
26th May 2025
34AQI
27th May 2025
39AQI
28th May 2025
37AQI
29th May 2025
40AQI
30th May 2025
33AQI
31st May 2025
30AQI
1st June 2025
30AQI
2nd June 2025
40AQI
3rd June 2025
43AQI
4th June 2025
39AQI
5th June 2025
45AQI
6th June 2025
46AQI
7th June 2025
53AQI
8th June 2025
56AQI
9th June 2025
59AQI
10th June 2025
58AQI
11th June 2025
47AQI
12th June 2025
51AQI
13th June 2025
42AQI
14th June 2025
41AQI
15th June 2025
30AQI
16th June 2025
36AQI
17th June 2025
39AQI
18th June 2025
45AQI
19th June 2025
51AQI
20th June 2025
55AQI
21st June 2025
60AQI
22nd June 2025
69AQI
23rd June 2025
48AQI
24th June 2025
46AQI
25th June 2025
50AQI
26th June 2025
40AQI
27th June 2025
54AQI
28th June 2025
42AQI
29th June 2025
46AQI
30th June 2025
54AQI
1st July 2025
52AQI
2nd July 2025
64AQI
3rd July 2025
66AQI
4th July 2025
70AQI
5th July 2025
68AQI
6th July 2025
58AQI
7th July 2025
60AQI
8th July 2025
59AQI
9th July 2025
55AQI
10th July 2025
48AQI
11th July 2025
47AQI
12th July 2025
46AQI
13th July 2025
49AQI
14th July 2025
43AQI
15th July 2025
38AQI
16th July 2025
45AQI
17th July 2025
33AQI
18th July 2025
36AQI
19th July 2025
36AQI
20th July 2025
38AQI
21st July 2025
38AQI
22nd July 2025
41AQI
23rd July 2025
41AQI
24th July 2025
46AQI
25th July 2025
48AQI
26th July 2025
45AQI
27th July 2025
40AQI
28th July 2025
43AQI
29th July 2025
42AQI

31AQI

35AQI

44AQI

39AQI

42AQI

47AQI

48AQI

No. of days

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

202541AQI

31
26
2
21
10
28
2
25
6
19
11
20
9
170
40

Highest AQI recorded in

July

48AQI

Lowest AQI recorded in

January

31AQI

202439AQI

30
29
25
6
16
14
25
6
12
18
26
5
27
4
30
30
1
28
2
31
309
56

Highest AQI recorded in

June

52AQI

Lowest AQI recorded in

December

27AQI

202341AQI

31
27
1
17
14
17
13
19
12
23
7
21
10
28
3
28
2
31
24
4
31
297
66

Highest AQI recorded in

April

50AQI

Lowest AQI recorded in

December

32AQI

202239AQI

29
2
20
1
24
7
19
11
17
14
19
11
20
4
1
25
3
30
1
28
2
31
263
56

Highest AQI recorded in

May

50AQI

Lowest AQI recorded in

December

30AQI

202137AQI

29
2
23
5
25
4
16
5
24
5
2
20
10
27
4
23
8
30
30
1
30
23
300
44
2

Highest AQI recorded in

June

48AQI

Lowest AQI recorded in

December

27AQI

202034AQI

12
1
21
15
3
23
7
28
1
13
16
2
18
1
29
2
26
4
31
216
35
2

Highest AQI recorded in

August

54AQI

Lowest AQI recorded in

December

21AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
41AQI
Least Polluted Year Recorded
2020(Avg.)
34AQI

Joetsu's annual 2025 AQI (41) shows an average percentage change of 8.1% (worsened AQI) compared to previous years: 2020 (34), 2021 (37), 2022 (39), 2023 (41), 2024 (39).