Itoigawa, 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
Itoigawa, Niigata, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Jul 2023
68AQILowest AQI recorded on
22nd Jul 2024
23AQISame Day Analysis (29th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 43 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 30th Jul - 31st Jul 2025
Itoigawa, Niigata, Japan
AQI
Day
Night
.
4 AM30th Jul 2025
7 PM
3 AM31st Jul 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
10AM30th Jul
51AQI
Avg. Lowest Time
7PM30th Jul
33AQI
In the last 24 hours,
Itoigawa's AQI reached its highest point of 51 at 10 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 30th Jul and 31st Jul 2025.
Day & Night AQI Trend : Jul 2025
Itoigawa, Niigata, Japan
Jul
01st - 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 - 31st31st
Day
Night
1st Jul 2025504 AMAQI
1st Jul 2025525 AMAQI
1st Jul 2025516 AMAQI
1st Jul 2025527 AMAQI
1st Jul 2025528 AMAQI
1st Jul 2025559 AMAQI
1st Jul 20255810 AMAQI
1st Jul 20256611 AMAQI
1st Jul 20255912 PMAQI
1st Jul 2025571 PMAQI
1st Jul 2025612 PMAQI
1st Jul 2025573 PMAQI
1st Jul 2025534 PMAQI
1st Jul 2025525 PMAQI
1st Jul 2025566 PMAQI
1st Jul 2025577 PMAQI
1st Jul 2025558 PMAQI
1st Jul 2025519 PMAQI
1st Jul 20255110 PMAQI
1st Jul 20255311 PMAQI
2nd Jul 20255412 AMAQI
2nd Jul 2025541 AMAQI
2nd Jul 2025512 AMAQI
2nd Jul 2025513 AMAQI
25°C21/28°C
2nd Jul 2025514 AMAQI
2nd Jul 2025525 AMAQI
2nd Jul 2025536 AMAQI
2nd Jul 2025537 AMAQI
2nd Jul 2025538 AMAQI
2nd Jul 2025629 AMAQI
2nd Jul 20257410 AMAQI
2nd Jul 20258211 AMAQI
2nd Jul 20257312 PMAQI
2nd Jul 2025691 PMAQI
2nd Jul 2025702 PMAQI
2nd Jul 2025643 PMAQI
2nd Jul 2025604 PMAQI
2nd Jul 2025595 PMAQI
2nd Jul 2025586 PMAQI
2nd Jul 2025567 PMAQI
2nd Jul 2025548 PMAQI
2nd Jul 2025549 PMAQI
2nd Jul 20255410 PMAQI
2nd Jul 20255411 PMAQI
3rd Jul 20255412 AMAQI
3rd Jul 2025541 AMAQI
3rd Jul 2025522 AMAQI
3rd Jul 2025523 AMAQI
24°C21/28°C
3rd Jul 2025524 AMAQI
3rd Jul 2025525 AMAQI
3rd Jul 2025526 AMAQI
3rd Jul 2025527 AMAQI
3rd Jul 2025528 AMAQI
3rd Jul 2025569 AMAQI
3rd Jul 20256010 AMAQI
3rd Jul 20256211 AMAQI
3rd Jul 20256212 PMAQI
3rd Jul 2025621 PMAQI
3rd Jul 2025622 PMAQI
3rd Jul 2025623 PMAQI
3rd Jul 2025624 PMAQI
3rd Jul 2025625 PMAQI
3rd Jul 2025786 PMAQI
3rd Jul 2025747 PMAQI
3rd Jul 2025728 PMAQI
3rd Jul 2025629 PMAQI
3rd Jul 20256410 PMAQI
3rd Jul 20256411 PMAQI
4th Jul 20256512 AMAQI
4th Jul 2025621 AMAQI
4th Jul 2025542 AMAQI
4th Jul 2025543 AMAQI
25°C21/29°C
4th Jul 2025544 AMAQI
4th Jul 2025565 AMAQI
4th Jul 2025556 AMAQI
4th Jul 2025557 AMAQI
4th Jul 2025558 AMAQI
4th Jul 2025689 AMAQI
4th Jul 20257810 AMAQI
4th Jul 20258011 AMAQI
4th Jul 20257912 PMAQI
4th Jul 2025721 PMAQI
4th Jul 2025732 PMAQI
4th Jul 2025743 PMAQI
4th Jul 2025734 PMAQI
4th Jul 2025755 PMAQI
4th Jul 2025836 PMAQI
4th Jul 2025827 PMAQI
4th Jul 2025748 PMAQI
4th Jul 2025649 PMAQI
4th Jul 20256610 PMAQI
4th Jul 20256311 PMAQI
5th Jul 20256412 AMAQI
5th Jul 2025611 AMAQI
5th Jul 2025582 AMAQI
5th Jul 2025593 AMAQI
25°C22/29°C
5th Jul 2025604 AMAQI
5th Jul 2025625 AMAQI
5th Jul 2025616 AMAQI
5th Jul 2025617 AMAQI
5th Jul 2025618 AMAQI
5th Jul 2025669 AMAQI
5th Jul 20257110 AMAQI
5th Jul 20256911 AMAQI
5th Jul 20256312 PMAQI
5th Jul 2025671 PMAQI
5th Jul 2025762 PMAQI
5th Jul 2025773 PMAQI
5th Jul 2025754 PMAQI
5th Jul 2025775 PMAQI
5th Jul 2025806 PMAQI
5th Jul 2025767 PMAQI
5th Jul 2025768 PMAQI
5th Jul 2025689 PMAQI
5th Jul 20256610 PMAQI
5th Jul 20256711 PMAQI
6th Jul 20256612 AMAQI
6th Jul 2025611 AMAQI
6th Jul 2025592 AMAQI
6th Jul 2025603 AMAQI
24°C21/29°C
6th Jul 2025614 AMAQI
6th Jul 2025605 AMAQI
6th Jul 2025606 AMAQI
6th Jul 2025607 AMAQI
6th Jul 2025608 AMAQI
6th Jul 2025589 AMAQI
6th Jul 20255810 AMAQI
6th Jul 20256111 AMAQI
6th Jul 20255612 PMAQI
6th Jul 2025531 PMAQI
6th Jul 2025542 PMAQI
6th Jul 2025543 PMAQI
6th Jul 2025604 PMAQI
6th Jul 2025565 PMAQI
6th Jul 2025576 PMAQI
6th Jul 2025607 PMAQI
6th Jul 2025548 PMAQI
6th Jul 2025609 PMAQI
6th Jul 20256210 PMAQI
6th Jul 20256111 PMAQI
7th Jul 20256212 AMAQI
7th Jul 2025611 AMAQI
7th Jul 2025612 AMAQI
7th Jul 2025613 AMAQI
25°C21/29°C
7th Jul 2025604 AMAQI
7th Jul 2025605 AMAQI
7th Jul 2025606 AMAQI
7th Jul 2025607 AMAQI
7th Jul 2025608 AMAQI
7th Jul 2025669 AMAQI
7th Jul 20256310 AMAQI
7th Jul 20256011 AMAQI
7th Jul 20256012 PMAQI
7th Jul 2025621 PMAQI
7th Jul 2025632 PMAQI
7th Jul 2025663 PMAQI
7th Jul 2025654 PMAQI
7th Jul 2025645 PMAQI
7th Jul 2025626 PMAQI
7th Jul 2025587 PMAQI
7th Jul 2025608 PMAQI
7th Jul 2025609 PMAQI
7th Jul 20255910 PMAQI
7th Jul 20256011 PMAQI
8th Jul 20256212 AMAQI
8th Jul 2025611 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025603 AMAQI
25°C21/29°C
8th Jul 2025604 AMAQI
8th Jul 2025605 AMAQI
8th Jul 2025616 AMAQI
8th Jul 2025617 AMAQI
8th Jul 2025608 AMAQI
8th Jul 2025619 AMAQI
8th Jul 20256110 AMAQI
8th Jul 20256611 AMAQI
8th Jul 20256212 PMAQI
8th Jul 2025591 PMAQI
8th Jul 2025542 PMAQI
8th Jul 2025553 PMAQI
8th Jul 2025554 PMAQI
8th Jul 2025585 PMAQI
8th Jul 2025626 PMAQI
8th Jul 2025577 PMAQI
8th Jul 2025578 PMAQI
8th Jul 2025579 PMAQI
8th Jul 20255610 PMAQI
8th Jul 20255511 PMAQI
9th Jul 20255612 AMAQI
9th Jul 2025571 AMAQI
9th Jul 2025602 AMAQI
9th Jul 2025603 AMAQI
25°C21/29°C
9th Jul 2025604 AMAQI
9th Jul 2025605 AMAQI
9th Jul 2025606 AMAQI
9th Jul 2025607 AMAQI
9th Jul 2025608 AMAQI
9th Jul 2025569 AMAQI
9th Jul 20255410 AMAQI
9th Jul 20255611 AMAQI
9th Jul 20255012 PMAQI
9th Jul 2025491 PMAQI
9th Jul 2025542 PMAQI
9th Jul 2025523 PMAQI
9th Jul 2025524 PMAQI
9th Jul 2025555 PMAQI
9th Jul 2025486 PMAQI
9th Jul 2025477 PMAQI
9th Jul 2025548 PMAQI
9th Jul 2025569 PMAQI
9th Jul 20255610 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255412 AMAQI
10th Jul 2025561 AMAQI
10th Jul 2025592 AMAQI
10th Jul 2025593 AMAQI
24°C21/28°C
10th Jul 2025584 AMAQI
10th Jul 2025585 AMAQI
10th Jul 2025586 AMAQI
10th Jul 2025587 AMAQI
10th Jul 2025588 AMAQI
10th Jul 2025409 AMAQI
10th Jul 20254010 AMAQI
10th Jul 20254011 AMAQI
10th Jul 20253912 PMAQI
10th Jul 2025421 PMAQI
10th Jul 2025432 PMAQI
10th Jul 2025383 PMAQI
10th Jul 2025314 PMAQI
10th Jul 2025355 PMAQI
10th Jul 2025396 PMAQI
10th Jul 2025377 PMAQI
10th Jul 2025448 PMAQI
10th Jul 2025549 PMAQI
10th Jul 20255410 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255312 AMAQI
11th Jul 2025561 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025583 AMAQI
24°C21/28°C
11th Jul 2025574 AMAQI
11th Jul 2025565 AMAQI
11th Jul 2025566 AMAQI
11th Jul 2025567 AMAQI
11th Jul 2025568 AMAQI
11th Jul 2025479 AMAQI
11th Jul 20255210 AMAQI
11th Jul 20254511 AMAQI
11th Jul 20253912 PMAQI
11th Jul 2025351 PMAQI
11th Jul 2025402 PMAQI
11th Jul 2025473 PMAQI
11th Jul 2025434 PMAQI
11th Jul 2025435 PMAQI
11th Jul 2025406 PMAQI
11th Jul 2025417 PMAQI
11th Jul 2025468 PMAQI
11th Jul 2025539 PMAQI
11th Jul 20255310 PMAQI
11th Jul 20255211 PMAQI
12th Jul 20255212 AMAQI
12th Jul 2025541 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025563 AMAQI
24°C22/27°C
12th Jul 2025564 AMAQI
12th Jul 2025545 AMAQI
12th Jul 2025546 AMAQI
12th Jul 2025547 AMAQI
12th Jul 2025548 AMAQI
12th Jul 2025419 AMAQI
12th Jul 20253410 AMAQI
12th Jul 20254011 AMAQI
12th Jul 20254912 PMAQI
12th Jul 2025381 PMAQI
12th Jul 2025382 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025384 PMAQI
12th Jul 2025405 PMAQI
12th Jul 2025326 PMAQI
12th Jul 2025387 PMAQI
12th Jul 2025428 PMAQI
12th Jul 2025519 PMAQI
12th Jul 20255010 PMAQI
12th Jul 20255011 PMAQI
13th Jul 20254712 AMAQI
13th Jul 2025521 AMAQI
13th Jul 2025542 AMAQI
13th Jul 2025543 AMAQI
23°C20/26°C
13th Jul 2025544 AMAQI
13th Jul 2025525 AMAQI
13th Jul 2025526 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025538 AMAQI
13th Jul 2025459 AMAQI
13th Jul 20254210 AMAQI
13th Jul 20254811 AMAQI
13th Jul 20254912 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025522 PMAQI
13th Jul 2025453 PMAQI
13th Jul 2025424 PMAQI
13th Jul 2025415 PMAQI
13th Jul 2025446 PMAQI
13th Jul 2025487 PMAQI
13th Jul 2025508 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255311 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025521 AMAQI
14th Jul 2025532 AMAQI
14th Jul 2025533 AMAQI
24°C20/29°C
14th Jul 2025524 AMAQI
14th Jul 2025525 AMAQI
14th Jul 2025526 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025528 AMAQI
14th Jul 2025509 AMAQI
14th Jul 20255210 AMAQI
14th Jul 20254711 AMAQI
14th Jul 20255112 PMAQI
14th Jul 2025481 PMAQI
14th Jul 2025402 PMAQI
14th Jul 2025453 PMAQI
14th Jul 2025474 PMAQI
14th Jul 2025415 PMAQI
14th Jul 2025366 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025368 PMAQI
14th Jul 2025519 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255111 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025471 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025523 AMAQI
27°C22/32°C
15th Jul 2025524 AMAQI
15th Jul 2025525 AMAQI
15th Jul 2025526 AMAQI
15th Jul 2025527 AMAQI
15th Jul 2025528 AMAQI
15th Jul 2025299 AMAQI
15th Jul 20252210 AMAQI
15th Jul 20252411 AMAQI
15th Jul 20252612 PMAQI
15th Jul 2025271 PMAQI
15th Jul 2025292 PMAQI
15th Jul 2025243 PMAQI
15th Jul 2025254 PMAQI
15th Jul 2025335 PMAQI
15th Jul 2025356 PMAQI
15th Jul 2025297 PMAQI
15th Jul 2025328 PMAQI
15th Jul 2025459 PMAQI
15th Jul 20254310 PMAQI
15th Jul 20254411 PMAQI
16th Jul 20254712 AMAQI
16th Jul 2025501 AMAQI
16th Jul 2025512 AMAQI
16th Jul 2025523 AMAQI
25°C23/29°C
16th Jul 2025514 AMAQI
16th Jul 2025485 AMAQI
16th Jul 2025476 AMAQI
16th Jul 2025467 AMAQI
16th Jul 2025478 AMAQI
16th Jul 2025539 AMAQI
16th Jul 20254810 AMAQI
16th Jul 20254511 AMAQI
16th Jul 20253812 PMAQI
16th Jul 2025381 PMAQI
16th Jul 2025342 PMAQI
16th Jul 2025363 PMAQI
16th Jul 2025414 PMAQI
16th Jul 2025465 PMAQI
16th Jul 2025456 PMAQI
16th Jul 2025477 PMAQI
16th Jul 2025498 PMAQI
16th Jul 2025509 PMAQI
16th Jul 20254710 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20254512 AMAQI
17th Jul 2025461 AMAQI
17th Jul 2025492 AMAQI
17th Jul 2025483 AMAQI
27°C23/32°C
17th Jul 2025484 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025487 AMAQI
17th Jul 2025488 AMAQI
17th Jul 2025239 AMAQI
17th Jul 20252010 AMAQI
17th Jul 20252411 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025221 PMAQI
17th Jul 2025212 PMAQI
17th Jul 2025193 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025245 PMAQI
17th Jul 2025246 PMAQI
17th Jul 2025257 PMAQI
17th Jul 2025258 PMAQI
17th Jul 2025369 PMAQI
17th Jul 20253910 PMAQI
17th Jul 20254011 PMAQI
18th Jul 20254612 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025472 AMAQI
18th Jul 2025483 AMAQI
24°C22/29°C
18th Jul 2025484 AMAQI
18th Jul 2025445 AMAQI
18th Jul 2025426 AMAQI
18th Jul 2025427 AMAQI
18th Jul 2025428 AMAQI
18th Jul 2025299 AMAQI
18th Jul 20252810 AMAQI
18th Jul 20253011 AMAQI
18th Jul 20253612 PMAQI
18th Jul 2025371 PMAQI
18th Jul 2025342 PMAQI
18th Jul 2025343 PMAQI
18th Jul 2025264 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025256 PMAQI
18th Jul 2025227 PMAQI
18th Jul 2025298 PMAQI
18th Jul 2025399 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20253811 PMAQI
19th Jul 20253812 AMAQI
19th Jul 2025441 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025463 AMAQI
25°C21/31°C
19th Jul 2025454 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025426 AMAQI
19th Jul 2025427 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025349 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20253411 AMAQI
19th Jul 20253112 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025334 PMAQI
19th Jul 2025365 PMAQI
19th Jul 2025336 PMAQI
19th Jul 2025267 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20254010 PMAQI
19th Jul 20253911 PMAQI
20th Jul 20254012 AMAQI
20th Jul 2025411 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025443 AMAQI
26°C23/29°C
20th Jul 2025434 AMAQI
20th Jul 2025425 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025428 AMAQI
20th Jul 2025369 AMAQI
20th Jul 20253410 AMAQI
20th Jul 20253211 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025331 PMAQI
20th Jul 2025392 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025364 PMAQI
20th Jul 2025355 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025337 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20253910 PMAQI
20th Jul 20253911 PMAQI
21st Jul 20253812 AMAQI
21st Jul 2025381 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025423 AMAQI
26°C23/31°C
21st Jul 2025424 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025398 AMAQI
21st Jul 2025359 AMAQI
21st Jul 20253410 AMAQI
21st Jul 20253911 AMAQI
21st Jul 20253812 PMAQI
21st Jul 2025391 PMAQI
21st Jul 2025352 PMAQI
21st Jul 2025383 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025375 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025347 PMAQI
21st Jul 2025358 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20254010 PMAQI
21st Jul 20253911 PMAQI
22nd Jul 20253912 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025403 AMAQI
26°C21/32°C
22nd Jul 2025394 AMAQI
22nd Jul 2025395 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025397 AMAQI
22nd Jul 2025398 AMAQI
22nd Jul 2025429 AMAQI
22nd Jul 20254710 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20255112 PMAQI
22nd Jul 2025481 PMAQI
22nd Jul 2025462 PMAQI
22nd Jul 2025493 PMAQI
22nd Jul 2025354 PMAQI
22nd Jul 2025405 PMAQI
22nd Jul 2025496 PMAQI
22nd Jul 2025427 PMAQI
22nd Jul 2025388 PMAQI
22nd Jul 2025459 PMAQI
22nd Jul 20254110 PMAQI
22nd Jul 20253411 PMAQI
23rd Jul 20253912 AMAQI
23rd Jul 2025421 AMAQI
23rd Jul 2025392 AMAQI
23rd Jul 2025393 AMAQI
26°C23/31°C
23rd Jul 2025404 AMAQI
23rd Jul 2025415 AMAQI
23rd Jul 2025426 AMAQI
23rd Jul 2025427 AMAQI
23rd Jul 2025428 AMAQI
23rd Jul 2025509 AMAQI
23rd Jul 20255510 AMAQI
23rd Jul 20255311 AMAQI
23rd Jul 20255312 PMAQI
23rd Jul 2025501 PMAQI
23rd Jul 2025442 PMAQI
23rd Jul 2025473 PMAQI
23rd Jul 2025524 PMAQI
23rd Jul 2025485 PMAQI
23rd Jul 2025436 PMAQI
23rd Jul 2025397 PMAQI
23rd Jul 2025398 PMAQI
23rd Jul 2025369 PMAQI
23rd Jul 20253610 PMAQI
23rd Jul 20254311 PMAQI
24th Jul 20254512 AMAQI
24th Jul 2025401 AMAQI
24th Jul 2025402 AMAQI
24th Jul 2025403 AMAQI
26°C23/30°C
24th Jul 2025414 AMAQI
24th Jul 2025425 AMAQI
24th Jul 2025426 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025489 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255411 AMAQI
24th Jul 20255312 PMAQI
24th Jul 2025461 PMAQI
24th Jul 2025482 PMAQI
24th Jul 2025503 PMAQI
24th Jul 2025544 PMAQI
24th Jul 2025535 PMAQI
24th Jul 2025526 PMAQI
24th Jul 2025547 PMAQI
24th Jul 2025508 PMAQI
24th Jul 2025429 PMAQI
24th Jul 20254010 PMAQI
24th Jul 20254411 PMAQI
25th Jul 20254812 AMAQI
25th Jul 2025471 AMAQI
25th Jul 2025422 AMAQI
25th Jul 2025413 AMAQI
26°C22/31°C
25th Jul 2025424 AMAQI
25th Jul 2025445 AMAQI
25th Jul 2025446 AMAQI
25th Jul 2025447 AMAQI
25th Jul 2025448 AMAQI
25th Jul 2025529 AMAQI
25th Jul 20256010 AMAQI
25th Jul 20255711 AMAQI
25th Jul 20255612 PMAQI
25th Jul 2025561 PMAQI
25th Jul 2025562 PMAQI
25th Jul 2025553 PMAQI
25th Jul 2025604 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025546 PMAQI
25th Jul 2025487 PMAQI
25th Jul 2025448 PMAQI
25th Jul 2025539 PMAQI
25th Jul 20254910 PMAQI
25th Jul 20254811 PMAQI
26th Jul 20255212 AMAQI
26th Jul 2025481 AMAQI
26th Jul 2025442 AMAQI
26th Jul 2025453 AMAQI
26°C21/31°C
26th Jul 2025454 AMAQI
26th Jul 2025475 AMAQI
26th Jul 2025486 AMAQI
26th Jul 2025477 AMAQI
26th Jul 2025478 AMAQI
26th Jul 2025549 AMAQI
26th Jul 20255710 AMAQI
26th Jul 20255511 AMAQI
26th Jul 20255312 PMAQI
26th Jul 2025501 PMAQI
26th Jul 2025452 PMAQI
26th Jul 2025413 PMAQI
26th Jul 2025444 PMAQI
26th Jul 2025485 PMAQI
26th Jul 2025466 PMAQI
26th Jul 2025367 PMAQI
26th Jul 2025328 PMAQI
26th Jul 2025369 PMAQI
26th Jul 20254010 PMAQI
26th Jul 20254611 PMAQI
27th Jul 20254812 AMAQI
27th Jul 2025491 AMAQI
27th Jul 2025462 AMAQI
27th Jul 2025463 AMAQI
27°C22/31°C
27th Jul 2025484 AMAQI
27th Jul 2025485 AMAQI
27th Jul 2025486 AMAQI
27th Jul 2025487 AMAQI
27th Jul 2025488 AMAQI
27th Jul 2025449 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20253011 AMAQI
27th Jul 20253812 PMAQI
27th Jul 2025401 PMAQI
27th Jul 2025352 PMAQI
27th Jul 2025363 PMAQI
27th Jul 2025354 PMAQI
27th Jul 2025325 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025347 PMAQI
27th Jul 2025428 PMAQI
27th Jul 2025439 PMAQI
27th Jul 20254110 PMAQI
27th Jul 20254611 PMAQI
28th Jul 20254612 AMAQI
28th Jul 2025461 AMAQI
28th Jul 2025482 AMAQI
28th Jul 2025483 AMAQI
27°C24/31°C
28th Jul 2025474 AMAQI
28th Jul 2025465 AMAQI
28th Jul 2025466 AMAQI
28th Jul 2025467 AMAQI
28th Jul 2025468 AMAQI
28th Jul 2025369 AMAQI
28th Jul 20253010 AMAQI
28th Jul 20253511 AMAQI
28th Jul 20255012 PMAQI
28th Jul 2025551 PMAQI
28th Jul 2025422 PMAQI
28th Jul 2025443 PMAQI
28th Jul 2025524 PMAQI
28th Jul 2025505 PMAQI
28th Jul 2025506 PMAQI
28th Jul 2025467 PMAQI
28th Jul 2025458 PMAQI
28th Jul 2025469 PMAQI
28th Jul 20254110 PMAQI
28th Jul 20254311 PMAQI
29th Jul 20254912 AMAQI
29th Jul 2025481 AMAQI
29th Jul 2025452 AMAQI
29th Jul 2025463 AMAQI
28°C24/31°C
29th Jul 2025464 AMAQI
29th Jul 2025455 AMAQI
29th Jul 2025456 AMAQI
29th Jul 2025457 AMAQI
29th Jul 2025458 AMAQI
29th Jul 2025489 AMAQI
29th Jul 20255210 AMAQI
29th Jul 20255411 AMAQI
29th Jul 20255012 PMAQI
29th Jul 2025461 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025353 PMAQI
29th Jul 2025304 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025246 PMAQI
29th Jul 2025307 PMAQI
29th Jul 2025348 PMAQI
29th Jul 2025389 PMAQI
29th Jul 20253410 PMAQI
29th Jul 20254111 PMAQI
30th Jul 20254712 AMAQI
30th Jul 2025451 AMAQI
30th Jul 2025472 AMAQI
30th Jul 2025463 AMAQI
28°C24/31°C
30th Jul 2025464 AMAQI
30th Jul 2025465 AMAQI
30th Jul 2025466 AMAQI
30th Jul 2025467 AMAQI
30th Jul 2025468 AMAQI
30th Jul 2025489 AMAQI
30th Jul 20255110 AMAQI
30th Jul 20254311 AMAQI
30th Jul 20254512 PMAQI
30th Jul 2025471 PMAQI
30th Jul 2025442 PMAQI
30th Jul 2025423 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025425 PMAQI
30th Jul 2025366 PMAQI
30th Jul 2025337 PMAQI
30th Jul 2025358 PMAQI
30th Jul 2025399 PMAQI
30th Jul 20254410 PMAQI
30th Jul 20254611 PMAQI
31st Jul 20254412 AMAQI
31st Jul 2025431 AMAQI
--°C/°C
4 AM
11 AM
7 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 7 PM
48AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
4 AM - 7 PM
48AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 7 PM (Avg. 48), while the lowest AQI was between 4 AM to 7 PM (Avg. 48).
Night time
Avg. Highest Time
12 AM - 3 AM
50AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM
46AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 50), while the lowest AQI was between 8 PM to 8 PM (Avg. 46).
2025 Days Vs Air Quality
Itoigawa, Niigata, Japan
2025
84%
176
16%
34
Total number of days with different AQI categories in last 211 days in 2025 (154 days remaining)
Good
176 DaysModerate
34 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% 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
Itoigawa, 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
31AQI
31AQI
2nd January 2025
29AQI
29AQI
3rd January 2025
27AQI
27AQI
4th January 2025
27AQI
27AQI
5th January 2025
26AQI
26AQI
6th January 2025
30AQI
30AQI
7th January 2025
29AQI
29AQI
8th January 2025
29AQI
29AQI
9th January 2025
30AQI
30AQI
10th January 2025
28AQI
28AQI
11th January 2025
28AQI
28AQI
12th January 2025
27AQI
27AQI
13th January 2025
30AQI
30AQI
14th January 2025
35AQI
35AQI
15th January 2025
28AQI
28AQI
16th January 2025
27AQI
27AQI
17th January 2025
28AQI
28AQI
18th January 2025
28AQI
28AQI
19th January 2025
30AQI
30AQI
20th January 2025
33AQI
33AQI
21st January 2025
40AQI
40AQI
22nd January 2025
35AQI
35AQI
23rd January 2025
46AQI
46AQI
24th January 2025
39AQI
39AQI
25th January 2025
38AQI
38AQI
26th January 2025
31AQI
31AQI
27th January 2025
28AQI
28AQI
28th January 2025
30AQI
30AQI
29th January 2025
29AQI
29AQI
30th January 2025
31AQI
31AQI
31st January 2025
32AQI
32AQI
1st February 2025
35AQI
35AQI
2nd February 2025
31AQI
31AQI
3rd February 2025
33AQI
33AQI
4th February 2025
32AQI
32AQI
5th February 2025
31AQI
31AQI
6th February 2025
31AQI
31AQI
7th February 2025
35AQI
35AQI
8th February 2025
31AQI
31AQI
9th February 2025
31AQI
31AQI
10th February 2025
30AQI
30AQI
11th February 2025
32AQI
32AQI
12th February 2025
30AQI
30AQI
13th February 2025
35AQI
35AQI
14th February 2025
33AQI
33AQI
15th February 2025
32AQI
32AQI
16th February 2025
35AQI
35AQI
17th February 2025
40AQI
40AQI
18th February 2025
32AQI
32AQI
19th February 2025
33AQI
33AQI
20th February 2025
31AQI
31AQI
21st February 2025
32AQI
32AQI
22nd February 2025
34AQI
34AQI
23rd February 2025
33AQI
33AQI
24th February 2025
32AQI
32AQI
25th February 2025
34AQI
34AQI
26th February 2025
44AQI
44AQI
27th February 2025
50AQI
50AQI
28th February 2025
47AQI
47AQI
1st March 2025
49AQI
49AQI
2nd March 2025
48AQI
48AQI
3rd March 2025
40AQI
40AQI
4th March 2025
38AQI
38AQI
5th March 2025
30AQI
30AQI
6th March 2025
33AQI
33AQI
7th March 2025
36AQI
36AQI
8th March 2025
36AQI
36AQI
9th March 2025
35AQI
35AQI
10th March 2025
40AQI
40AQI
11th March 2025
37AQI
37AQI
12th March 2025
34AQI
34AQI
13th March 2025
50AQI
50AQI
14th March 2025
38AQI
38AQI
15th March 2025
37AQI
37AQI
16th March 2025
28AQI
28AQI
17th March 2025
28AQI
28AQI
18th March 2025
30AQI
30AQI
19th March 2025
23AQI
23AQI
20th March 2025
34AQI
34AQI
21st March 2025
50AQI
50AQI
22nd March 2025
51AQI
51AQI
23rd March 2025
66AQI
66AQI
24th March 2025
63AQI
63AQI
25th March 2025
75AQI
75AQI
26th March 2025
69AQI
69AQI
27th March 2025
70AQI
70AQI
28th March 2025
57AQI
57AQI
29th March 2025
44AQI
44AQI
30th March 2025
36AQI
36AQI
31st March 2025
36AQI
36AQI
1st April 2025
31AQI
31AQI
2nd April 2025
29AQI
29AQI
3rd April 2025
23AQI
23AQI
4th April 2025
22AQI
22AQI
5th April 2025
31AQI
31AQI
6th April 2025
27AQI
27AQI
7th April 2025
34AQI
34AQI
8th April 2025
38AQI
38AQI
9th April 2025
30AQI
30AQI
10th April 2025
38AQI
38AQI
11th April 2025
44AQI
44AQI
12th April 2025
42AQI
42AQI
13th April 2025
32AQI
32AQI
14th April 2025
34AQI
34AQI
15th April 2025
25AQI
25AQI
16th April 2025
38AQI
38AQI
17th April 2025
43AQI
43AQI
18th April 2025
52AQI
52AQI
19th April 2025
58AQI
58AQI
20th April 2025
48AQI
48AQI
21st April 2025
42AQI
42AQI
22nd April 2025
45AQI
45AQI
23rd April 2025
35AQI
35AQI
24th April 2025
26AQI
26AQI
25th April 2025
39AQI
39AQI
26th April 2025
48AQI
48AQI
27th April 2025
48AQI
48AQI
28th April 2025
47AQI
47AQI
29th April 2025
46AQI
46AQI
30th April 2025
49AQI
49AQI
1st May 2025
54AQI
54AQI
2nd May 2025
36AQI
36AQI
3rd May 2025
40AQI
40AQI
4th May 2025
36AQI
36AQI
5th May 2025
38AQI
38AQI
6th May 2025
35AQI
35AQI
7th May 2025
29AQI
29AQI
8th May 2025
30AQI
30AQI
9th May 2025
36AQI
36AQI
10th May 2025
28AQI
28AQI
11th May 2025
28AQI
28AQI
12th May 2025
39AQI
39AQI
13th May 2025
48AQI
48AQI
14th May 2025
51AQI
51AQI
15th May 2025
55AQI
55AQI
16th May 2025
56AQI
56AQI
17th May 2025
42AQI
42AQI
18th May 2025
52AQI
52AQI
19th May 2025
47AQI
47AQI
20th May 2025
63AQI
63AQI
21st May 2025
64AQI
64AQI
22nd May 2025
47AQI
47AQI
23rd May 2025
48AQI
48AQI
24th May 2025
47AQI
47AQI
25th May 2025
34AQI
34AQI
26th May 2025
33AQI
33AQI
27th May 2025
36AQI
36AQI
28th May 2025
35AQI
35AQI
29th May 2025
39AQI
39AQI
30th May 2025
35AQI
35AQI
31st May 2025
28AQI
28AQI
1st June 2025
32AQI
32AQI
2nd June 2025
40AQI
40AQI
3rd June 2025
43AQI
43AQI
4th June 2025
40AQI
40AQI
5th June 2025
42AQI
42AQI
6th June 2025
47AQI
47AQI
7th June 2025
52AQI
52AQI
8th June 2025
56AQI
56AQI
9th June 2025
60AQI
60AQI
10th June 2025
62AQI
62AQI
11th June 2025
47AQI
47AQI
12th June 2025
48AQI
48AQI
13th June 2025
41AQI
41AQI
14th June 2025
41AQI
41AQI
15th June 2025
30AQI
30AQI
16th June 2025
36AQI
36AQI
17th June 2025
39AQI
39AQI
18th June 2025
45AQI
45AQI
19th June 2025
50AQI
50AQI
20th June 2025
55AQI
55AQI
21st June 2025
60AQI
60AQI
22nd June 2025
69AQI
69AQI
23rd June 2025
48AQI
48AQI
24th June 2025
46AQI
46AQI
25th June 2025
48AQI
48AQI
26th June 2025
41AQI
41AQI
27th June 2025
56AQI
56AQI
28th June 2025
43AQI
43AQI
29th June 2025
43AQI
43AQI
30th June 2025
53AQI
53AQI
1st July 2025
54AQI
54AQI
2nd July 2025
58AQI
58AQI
3rd July 2025
60AQI
60AQI
4th July 2025
67AQI
67AQI
5th July 2025
68AQI
68AQI
6th July 2025
59AQI
59AQI
7th July 2025
61AQI
61AQI
8th July 2025
59AQI
59AQI
9th July 2025
55AQI
55AQI
10th July 2025
48AQI
48AQI
11th July 2025
49AQI
49AQI
12th July 2025
47AQI
47AQI
13th July 2025
50AQI
50AQI
14th July 2025
48AQI
48AQI
15th July 2025
40AQI
40AQI
16th July 2025
47AQI
47AQI
17th July 2025
35AQI
35AQI
18th July 2025
37AQI
37AQI
19th July 2025
36AQI
36AQI
20th July 2025
38AQI
38AQI
21st July 2025
38AQI
38AQI
22nd July 2025
42AQI
42AQI
23rd July 2025
43AQI
43AQI
24th July 2025
46AQI
46AQI
25th July 2025
50AQI
50AQI
26th July 2025
46AQI
46AQI
27th July 2025
42AQI
42AQI
28th July 2025
45AQI
45AQI
29th July 2025
43AQI
43AQI
31AQI
34AQI
43AQI
38AQI
42AQI
47AQI
49AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202541AQI
31
28
24
7
28
2
24
7
21
9
20
9
176
34
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
January31AQI
202437AQI
31
29
25
6
15
15
30
1
16
14
28
3
30
1
26
4
31
27
3
31
319
47
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
December27AQI
202338AQI
31
28
23
8
21
9
24
7
25
5
19
12
30
1
29
1
31
26
3
30
1
317
47
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
January30AQI
202237AQI
31
21
25
6
14
3
20
11
22
8
17
4
1
27
1
30
1
29
1
31
268
35
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
December27AQI
202134AQI
30
1
24
4
27
2
18
3
25
6
19
11
23
8
26
5
30
31
30
23
306
40
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
January24AQI
202030AQI
12
1
21
17
1
24
6
28
1
14
15
2
19
30
1
27
3
31
223
28
2
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
December19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
41AQILeast Polluted Year Recorded
2020(Avg.)
30AQIItoigawa's annual 2025 AQI (41) shows an average percentage change of 15.9% (worsened AQI) compared to previous years: 2020 (30), 2021 (34), 2022 (37), 2023 (38), 2024 (37).
