Sakaki, Nagano, 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+
August Air Quality Analysis
Sakaki, Nagano, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2024
60AQILowest AQI recorded on
18th Aug 2021
12AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Sakaki, Nagano, Japan
AQI
Day
Night
.
4 AM3rd Aug 2025
7 PM
3 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM3rd Aug
62AQI
Avg. Lowest Time
2AM4th Aug
38AQI
In the last 24 hours,
Sakaki's AQI reached its highest point of 62 at 12 PM during the Night, while the lowest point, 38, was recorded at 2 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sakaki, Nagano, Japan
JulAug
05th - 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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025524 AMAQI
5th Jul 2025535 AMAQI
5th Jul 2025536 AMAQI
5th Jul 2025537 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025489 AMAQI
5th Jul 20255110 AMAQI
5th Jul 20255211 AMAQI
5th Jul 20255812 PMAQI
5th Jul 2025631 PMAQI
5th Jul 2025682 PMAQI
5th Jul 2025663 PMAQI
5th Jul 2025624 PMAQI
5th Jul 2025645 PMAQI
5th Jul 2025686 PMAQI
5th Jul 2025747 PMAQI
5th Jul 2025708 PMAQI
5th Jul 2025619 PMAQI
5th Jul 20256010 PMAQI
5th Jul 20256211 PMAQI
6th Jul 20256212 AMAQI
6th Jul 2025561 AMAQI
6th Jul 2025522 AMAQI
6th Jul 2025523 AMAQI
23°C18/31°C
6th Jul 2025534 AMAQI
6th Jul 2025525 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025537 AMAQI
6th Jul 2025538 AMAQI
6th Jul 2025639 AMAQI
6th Jul 20257310 AMAQI
6th Jul 20256711 AMAQI
6th Jul 20256412 PMAQI
6th Jul 2025651 PMAQI
6th Jul 2025582 PMAQI
6th Jul 2025543 PMAQI
6th Jul 2025554 PMAQI
6th Jul 2025575 PMAQI
6th Jul 2025556 PMAQI
6th Jul 2025487 PMAQI
6th Jul 2025438 PMAQI
6th Jul 2025529 PMAQI
6th Jul 20255410 PMAQI
6th Jul 20255511 PMAQI
7th Jul 20255612 AMAQI
7th Jul 2025551 AMAQI
7th Jul 2025542 AMAQI
7th Jul 2025543 AMAQI
24°C15/32°C
7th Jul 2025554 AMAQI
7th Jul 2025565 AMAQI
7th Jul 2025566 AMAQI
7th Jul 2025567 AMAQI
7th Jul 2025568 AMAQI
7th Jul 2025579 AMAQI
7th Jul 20256210 AMAQI
7th Jul 20256611 AMAQI
7th Jul 20256212 PMAQI
7th Jul 2025621 PMAQI
7th Jul 2025572 PMAQI
7th Jul 2025563 PMAQI
7th Jul 2025584 PMAQI
7th Jul 2025595 PMAQI
7th Jul 2025596 PMAQI
7th Jul 2025577 PMAQI
7th Jul 2025568 PMAQI
7th Jul 2025569 PMAQI
7th Jul 20255810 PMAQI
7th Jul 20255711 PMAQI
8th Jul 20255812 AMAQI
8th Jul 2025561 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025553 AMAQI
25°C17/32°C
8th Jul 2025564 AMAQI
8th Jul 2025575 AMAQI
8th Jul 2025566 AMAQI
8th Jul 2025567 AMAQI
8th Jul 2025568 AMAQI
8th Jul 2025649 AMAQI
8th Jul 20257010 AMAQI
8th Jul 20257611 AMAQI
8th Jul 20257012 PMAQI
8th Jul 2025701 PMAQI
8th Jul 2025612 PMAQI
8th Jul 2025643 PMAQI
8th Jul 2025694 PMAQI
8th Jul 2025665 PMAQI
8th Jul 2025606 PMAQI
8th Jul 2025617 PMAQI
8th Jul 2025608 PMAQI
8th Jul 2025579 PMAQI
8th Jul 20255810 PMAQI
8th Jul 20255811 PMAQI
9th Jul 20255812 AMAQI
9th Jul 2025581 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025573 AMAQI
25°C16/32°C
9th Jul 2025574 AMAQI
9th Jul 2025595 AMAQI
9th Jul 2025586 AMAQI
9th Jul 2025597 AMAQI
9th Jul 2025598 AMAQI
9th Jul 2025719 AMAQI
9th Jul 20258110 AMAQI
9th Jul 20258211 AMAQI
9th Jul 20257612 PMAQI
9th Jul 2025751 PMAQI
9th Jul 2025722 PMAQI
9th Jul 2025723 PMAQI
9th Jul 2025704 PMAQI
9th Jul 2025625 PMAQI
9th Jul 2025586 PMAQI
9th Jul 2025597 PMAQI
9th Jul 2025598 PMAQI
9th Jul 2025579 PMAQI
9th Jul 20255610 PMAQI
9th Jul 20255611 PMAQI
10th Jul 20255612 AMAQI
10th Jul 2025571 AMAQI
10th Jul 2025582 AMAQI
10th Jul 2025583 AMAQI
25°C18/29°C
10th Jul 2025594 AMAQI
10th Jul 2025615 AMAQI
10th Jul 2025626 AMAQI
10th Jul 2025617 AMAQI
10th Jul 2025618 AMAQI
10th Jul 2025559 AMAQI
10th Jul 20255710 AMAQI
10th Jul 20256011 AMAQI
10th Jul 20256412 PMAQI
10th Jul 2025601 PMAQI
10th Jul 2025612 PMAQI
10th Jul 2025683 PMAQI
10th Jul 2025624 PMAQI
10th Jul 2025485 PMAQI
10th Jul 2025506 PMAQI
10th Jul 2025587 PMAQI
10th Jul 2025558 PMAQI
10th Jul 2025559 PMAQI
10th Jul 20255410 PMAQI
10th Jul 20255011 PMAQI
11th Jul 20255012 AMAQI
11th Jul 2025531 AMAQI
11th Jul 2025602 AMAQI
11th Jul 2025603 AMAQI
23°C15/32°C
11th Jul 2025604 AMAQI
11th Jul 2025605 AMAQI
11th Jul 2025596 AMAQI
11th Jul 2025607 AMAQI
11th Jul 2025608 AMAQI
11th Jul 2025289 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20253011 AMAQI
11th Jul 20252812 PMAQI
11th Jul 2025301 PMAQI
11th Jul 2025332 PMAQI
11th Jul 2025343 PMAQI
11th Jul 2025354 PMAQI
11th Jul 2025305 PMAQI
11th Jul 2025306 PMAQI
11th Jul 2025327 PMAQI
11th Jul 2025388 PMAQI
11th Jul 2025509 PMAQI
11th Jul 20254410 PMAQI
11th Jul 20254211 PMAQI
12th Jul 20254412 AMAQI
12th Jul 2025461 AMAQI
12th Jul 2025522 AMAQI
12th Jul 2025563 AMAQI
23°C17/28°C
12th Jul 2025584 AMAQI
12th Jul 2025555 AMAQI
12th Jul 2025546 AMAQI
12th Jul 2025547 AMAQI
12th Jul 2025548 AMAQI
12th Jul 2025299 AMAQI
12th Jul 20252110 AMAQI
12th Jul 20252711 AMAQI
12th Jul 20253312 PMAQI
12th Jul 2025391 PMAQI
12th Jul 2025432 PMAQI
12th Jul 2025413 PMAQI
12th Jul 2025474 PMAQI
12th Jul 2025425 PMAQI
12th Jul 2025346 PMAQI
12th Jul 2025327 PMAQI
12th Jul 2025348 PMAQI
12th Jul 2025419 PMAQI
12th Jul 20254210 PMAQI
12th Jul 20254411 PMAQI
13th Jul 20254212 AMAQI
13th Jul 2025491 AMAQI
13th Jul 2025542 AMAQI
13th Jul 2025543 AMAQI
23°C14/30°C
13th Jul 2025534 AMAQI
13th Jul 2025525 AMAQI
13th Jul 2025526 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025528 AMAQI
13th Jul 2025389 AMAQI
13th Jul 20252710 AMAQI
13th Jul 20253211 AMAQI
13th Jul 20253812 PMAQI
13th Jul 2025401 PMAQI
13th Jul 2025312 PMAQI
13th Jul 2025483 PMAQI
13th Jul 2025434 PMAQI
13th Jul 2025385 PMAQI
13th Jul 2025366 PMAQI
13th Jul 2025377 PMAQI
13th Jul 2025448 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255312 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025532 AMAQI
14th Jul 2025533 AMAQI
23°C14/33°C
14th Jul 2025524 AMAQI
14th Jul 2025525 AMAQI
14th Jul 2025506 AMAQI
14th Jul 2025517 AMAQI
14th Jul 2025508 AMAQI
14th Jul 2025459 AMAQI
14th Jul 20253810 AMAQI
14th Jul 20253011 AMAQI
14th Jul 20252312 PMAQI
14th Jul 2025261 PMAQI
14th Jul 2025242 PMAQI
14th Jul 2025303 PMAQI
14th Jul 2025364 PMAQI
14th Jul 2025325 PMAQI
14th Jul 2025226 PMAQI
14th Jul 2025237 PMAQI
14th Jul 2025248 PMAQI
14th Jul 2025379 PMAQI
14th Jul 20253610 PMAQI
14th Jul 20253811 PMAQI
15th Jul 20254212 AMAQI
15th Jul 2025441 AMAQI
15th Jul 2025482 AMAQI
15th Jul 2025523 AMAQI
24°C17/32°C
15th Jul 2025524 AMAQI
15th Jul 2025515 AMAQI
15th Jul 2025506 AMAQI
15th Jul 2025517 AMAQI
15th Jul 2025518 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251712 PMAQI
15th Jul 2025181 PMAQI
15th Jul 2025192 PMAQI
15th Jul 2025223 PMAQI
15th Jul 2025224 PMAQI
15th Jul 2025195 PMAQI
15th Jul 2025186 PMAQI
15th Jul 2025147 PMAQI
15th Jul 2025198 PMAQI
15th Jul 2025339 PMAQI
15th Jul 20253410 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253612 AMAQI
16th Jul 2025421 AMAQI
16th Jul 2025492 AMAQI
16th Jul 2025513 AMAQI
22°C18/27°C
16th Jul 2025494 AMAQI
16th Jul 2025445 AMAQI
16th Jul 2025446 AMAQI
16th Jul 2025447 AMAQI
16th Jul 2025448 AMAQI
16th Jul 2025399 AMAQI
16th Jul 20254210 AMAQI
16th Jul 20254711 AMAQI
16th Jul 20254912 PMAQI
16th Jul 2025521 PMAQI
16th Jul 2025442 PMAQI
16th Jul 2025413 PMAQI
16th Jul 2025404 PMAQI
16th Jul 2025455 PMAQI
16th Jul 2025486 PMAQI
16th Jul 2025437 PMAQI
16th Jul 2025368 PMAQI
16th Jul 2025399 PMAQI
16th Jul 20253210 PMAQI
16th Jul 20253211 PMAQI
17th Jul 20253412 AMAQI
17th Jul 2025391 AMAQI
17th Jul 2025452 AMAQI
17th Jul 2025473 AMAQI
23°C14/31°C
17th Jul 2025464 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025466 AMAQI
17th Jul 2025477 AMAQI
17th Jul 2025468 AMAQI
17th Jul 2025229 AMAQI
17th Jul 20251610 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20252012 PMAQI
17th Jul 2025221 PMAQI
17th Jul 2025212 PMAQI
17th Jul 2025183 PMAQI
17th Jul 2025194 PMAQI
17th Jul 2025215 PMAQI
17th Jul 2025246 PMAQI
17th Jul 2025277 PMAQI
17th Jul 2025238 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20253210 PMAQI
17th Jul 20253611 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025401 AMAQI
18th Jul 2025442 AMAQI
18th Jul 2025453 AMAQI
19°C15/26°C
18th Jul 2025444 AMAQI
18th Jul 2025395 AMAQI
18th Jul 2025396 AMAQI
18th Jul 2025397 AMAQI
18th Jul 2025408 AMAQI
18th Jul 2025299 AMAQI
18th Jul 20252010 AMAQI
18th Jul 20251911 AMAQI
18th Jul 20252512 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025293 PMAQI
18th Jul 2025314 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025346 PMAQI
18th Jul 2025287 PMAQI
18th Jul 2025308 PMAQI
18th Jul 2025379 PMAQI
18th Jul 20254110 PMAQI
18th Jul 20254311 PMAQI
19th Jul 20254412 AMAQI
19th Jul 2025431 AMAQI
19th Jul 2025422 AMAQI
19th Jul 2025433 AMAQI
23°C13/31°C
19th Jul 2025404 AMAQI
19th Jul 2025395 AMAQI
19th Jul 2025396 AMAQI
19th Jul 2025397 AMAQI
19th Jul 2025388 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20253011 AMAQI
19th Jul 20253812 PMAQI
19th Jul 2025371 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025323 PMAQI
19th Jul 2025384 PMAQI
19th Jul 2025345 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025257 PMAQI
19th Jul 2025248 PMAQI
19th Jul 2025339 PMAQI
19th Jul 20253410 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025401 AMAQI
20th Jul 2025422 AMAQI
20th Jul 2025413 AMAQI
23°C14/33°C
20th Jul 2025414 AMAQI
20th Jul 2025405 AMAQI
20th Jul 2025406 AMAQI
20th Jul 2025407 AMAQI
20th Jul 2025408 AMAQI
20th Jul 2025359 AMAQI
20th Jul 20253010 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20253012 PMAQI
20th Jul 2025291 PMAQI
20th Jul 2025282 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025334 PMAQI
20th Jul 2025405 PMAQI
20th Jul 2025386 PMAQI
20th Jul 2025317 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025339 PMAQI
20th Jul 20253610 PMAQI
20th Jul 20253811 PMAQI
21st Jul 20254012 AMAQI
21st Jul 2025411 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025403 AMAQI
24°C14/34°C
21st Jul 2025394 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025386 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025399 AMAQI
21st Jul 20254310 AMAQI
21st Jul 20254511 AMAQI
21st Jul 20254812 PMAQI
21st Jul 2025421 PMAQI
21st Jul 2025402 PMAQI
21st Jul 2025413 PMAQI
21st Jul 2025444 PMAQI
21st Jul 2025395 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025337 PMAQI
21st Jul 2025358 PMAQI
21st Jul 2025359 PMAQI
21st Jul 20253510 PMAQI
21st Jul 20253611 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025393 AMAQI
25°C17/34°C
22nd Jul 2025394 AMAQI
22nd Jul 2025405 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025407 AMAQI
22nd Jul 2025408 AMAQI
22nd Jul 2025519 AMAQI
22nd Jul 20256010 AMAQI
22nd Jul 20255711 AMAQI
22nd Jul 20255212 PMAQI
22nd Jul 2025531 PMAQI
22nd Jul 2025522 PMAQI
22nd Jul 2025533 PMAQI
22nd Jul 2025494 PMAQI
22nd Jul 2025495 PMAQI
22nd Jul 2025476 PMAQI
22nd Jul 2025387 PMAQI
22nd Jul 2025368 PMAQI
22nd Jul 2025429 PMAQI
22nd Jul 20254010 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254212 AMAQI
23rd Jul 2025401 AMAQI
23rd Jul 2025392 AMAQI
23rd Jul 2025393 AMAQI
23°C15/32°C
23rd Jul 2025404 AMAQI
23rd Jul 2025425 AMAQI
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025428 AMAQI
23rd Jul 2025569 AMAQI
23rd Jul 20256010 AMAQI
23rd Jul 20255911 AMAQI
23rd Jul 20255812 PMAQI
23rd Jul 2025551 PMAQI
23rd Jul 2025542 PMAQI
23rd Jul 2025563 PMAQI
23rd Jul 2025544 PMAQI
23rd Jul 2025545 PMAQI
23rd Jul 2025416 PMAQI
23rd Jul 2025287 PMAQI
23rd Jul 2025278 PMAQI
23rd Jul 2025349 PMAQI
23rd Jul 20253510 PMAQI
23rd Jul 20253611 PMAQI
24th Jul 20253612 AMAQI
24th Jul 2025391 AMAQI
24th Jul 2025422 AMAQI
24th Jul 2025413 AMAQI
24°C17/32°C
24th Jul 2025444 AMAQI
24th Jul 2025465 AMAQI
24th Jul 2025466 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025489 AMAQI
24th Jul 20254810 AMAQI
24th Jul 20256011 AMAQI
24th Jul 20257612 PMAQI
24th Jul 2025591 PMAQI
24th Jul 2025552 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025484 PMAQI
24th Jul 2025425 PMAQI
24th Jul 2025506 PMAQI
24th Jul 2025607 PMAQI
24th Jul 2025538 PMAQI
24th Jul 2025459 PMAQI
24th Jul 20254610 PMAQI
24th Jul 20254411 PMAQI
25th Jul 20254412 AMAQI
25th Jul 2025441 AMAQI
25th Jul 2025422 AMAQI
25th Jul 2025433 AMAQI
23°C14/33°C
25th Jul 2025444 AMAQI
25th Jul 2025485 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025467 AMAQI
25th Jul 2025468 AMAQI
25th Jul 2025529 AMAQI
25th Jul 20254610 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20255412 PMAQI
25th Jul 2025531 PMAQI
25th Jul 2025512 PMAQI
25th Jul 2025493 PMAQI
25th Jul 2025514 PMAQI
25th Jul 2025545 PMAQI
25th Jul 2025496 PMAQI
25th Jul 2025477 PMAQI
25th Jul 2025458 PMAQI
25th Jul 2025449 PMAQI
25th Jul 20254510 PMAQI
25th Jul 20255011 PMAQI
26th Jul 20255212 AMAQI
26th Jul 2025491 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025463 AMAQI
23°C15/34°C
26th Jul 2025464 AMAQI
26th Jul 2025475 AMAQI
26th Jul 2025466 AMAQI
26th Jul 2025467 AMAQI
26th Jul 2025468 AMAQI
26th Jul 2025509 AMAQI
26th Jul 20255310 AMAQI
26th Jul 20255611 AMAQI
26th Jul 20255012 PMAQI
26th Jul 2025451 PMAQI
26th Jul 2025492 PMAQI
26th Jul 2025533 PMAQI
26th Jul 2025554 PMAQI
26th Jul 2025525 PMAQI
26th Jul 2025396 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025348 PMAQI
26th Jul 2025429 PMAQI
26th Jul 20254410 PMAQI
26th Jul 20254411 PMAQI
27th Jul 20254412 AMAQI
27th Jul 2025441 AMAQI
27th Jul 2025462 AMAQI
27th Jul 2025483 AMAQI
24°C14/34°C
27th Jul 2025484 AMAQI
27th Jul 2025495 AMAQI
27th Jul 2025486 AMAQI
27th Jul 2025497 AMAQI
27th Jul 2025488 AMAQI
27th Jul 2025379 AMAQI
27th Jul 20253410 AMAQI
27th Jul 20254711 AMAQI
27th Jul 20255012 PMAQI
27th Jul 2025441 PMAQI
27th Jul 2025422 PMAQI
27th Jul 2025463 PMAQI
27th Jul 2025434 PMAQI
27th Jul 2025385 PMAQI
27th Jul 2025316 PMAQI
27th Jul 2025327 PMAQI
27th Jul 2025338 PMAQI
27th Jul 2025389 PMAQI
27th Jul 20254010 PMAQI
27th Jul 20254011 PMAQI
28th Jul 20254212 AMAQI
28th Jul 2025441 AMAQI
28th Jul 2025482 AMAQI
28th Jul 2025483 AMAQI
24°C14/33°C
28th Jul 2025474 AMAQI
28th Jul 2025465 AMAQI
28th Jul 2025466 AMAQI
28th Jul 2025467 AMAQI
28th Jul 2025468 AMAQI
28th Jul 2025429 AMAQI
28th Jul 20254410 AMAQI
28th Jul 20254611 AMAQI
28th Jul 20253612 PMAQI
28th Jul 2025401 PMAQI
28th Jul 2025422 PMAQI
28th Jul 2025413 PMAQI
28th Jul 2025404 PMAQI
28th Jul 2025405 PMAQI
28th Jul 2025386 PMAQI
28th Jul 2025377 PMAQI
28th Jul 2025378 PMAQI
28th Jul 2025409 PMAQI
28th Jul 20254110 PMAQI
28th Jul 20254411 PMAQI
29th Jul 20254312 AMAQI
29th Jul 2025421 AMAQI
29th Jul 2025452 AMAQI
29th Jul 2025443 AMAQI
25°C19/32°C
29th Jul 2025444 AMAQI
29th Jul 2025445 AMAQI
29th Jul 2025456 AMAQI
29th Jul 2025457 AMAQI
29th Jul 2025448 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20256210 AMAQI
29th Jul 20256411 AMAQI
29th Jul 20256412 PMAQI
29th Jul 2025601 PMAQI
29th Jul 2025602 PMAQI
29th Jul 2025613 PMAQI
29th Jul 2025604 PMAQI
29th Jul 2025585 PMAQI
29th Jul 2025526 PMAQI
29th Jul 2025467 PMAQI
29th Jul 2025398 PMAQI
29th Jul 2025359 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253711 PMAQI
30th Jul 20253912 AMAQI
30th Jul 2025431 AMAQI
30th Jul 2025442 AMAQI
30th Jul 2025443 AMAQI
24°C15/35°C
30th Jul 2025464 AMAQI
30th Jul 2025505 AMAQI
30th Jul 2025506 AMAQI
30th Jul 2025507 AMAQI
30th Jul 2025508 AMAQI
30th Jul 2025569 AMAQI
30th Jul 20255810 AMAQI
30th Jul 20256311 AMAQI
30th Jul 20256112 PMAQI
30th Jul 2025561 PMAQI
30th Jul 2025572 PMAQI
30th Jul 2025553 PMAQI
30th Jul 2025494 PMAQI
30th Jul 2025525 PMAQI
30th Jul 2025496 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025378 PMAQI
30th Jul 2025369 PMAQI
30th Jul 20253610 PMAQI
30th Jul 20254111 PMAQI
31st Jul 20254012 AMAQI
31st Jul 2025401 AMAQI
31st Jul 2025462 AMAQI
31st Jul 2025463 AMAQI
25°C15/34°C
31st Jul 2025474 AMAQI
31st Jul 2025485 AMAQI
31st Jul 2025486 AMAQI
31st Jul 2025487 AMAQI
31st Jul 2025488 AMAQI
31st Jul 2025489 AMAQI
31st Jul 20254810 AMAQI
31st Jul 20254711 AMAQI
31st Jul 20254712 PMAQI
31st Jul 2025481 PMAQI
31st Jul 2025482 PMAQI
31st Jul 2025513 PMAQI
31st Jul 2025524 PMAQI
31st Jul 2025485 PMAQI
31st Jul 2025386 PMAQI
31st Jul 2025347 PMAQI
31st Jul 2025358 PMAQI
31st Jul 2025509 PMAQI
31st Jul 20254010 PMAQI
31st Jul 20253811 PMAQI
1st Aug 20253512 AMAQI
1st Aug 2025401 AMAQI
1st Aug 2025382 AMAQI
1st Aug 2025413 AMAQI
25°C17/35°C
1st Aug 2025404 AMAQI
1st Aug 2025385 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025407 AMAQI
1st Aug 2025408 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20253210 AMAQI
1st Aug 20254811 AMAQI
1st Aug 20255412 PMAQI
1st Aug 2025581 PMAQI
1st Aug 2025402 PMAQI
1st Aug 2025343 PMAQI
1st Aug 2025514 PMAQI
1st Aug 2025485 PMAQI
1st Aug 2025506 PMAQI
1st Aug 2025407 PMAQI
1st Aug 2025438 PMAQI
1st Aug 2025449 PMAQI
1st Aug 20254110 PMAQI
1st Aug 20253411 PMAQI
2nd Aug 20253512 AMAQI
2nd Aug 2025361 AMAQI
2nd Aug 2025402 AMAQI
2nd Aug 2025403 AMAQI
23°C14/33°C
2nd Aug 2025414 AMAQI
2nd Aug 2025425 AMAQI
2nd Aug 2025426 AMAQI
2nd Aug 2025397 AMAQI
2nd Aug 2025428 AMAQI
2nd Aug 2025469 AMAQI
2nd Aug 20254210 AMAQI
2nd Aug 20254211 AMAQI
2nd Aug 20253612 PMAQI
2nd Aug 2025431 PMAQI
2nd Aug 2025502 PMAQI
2nd Aug 2025543 PMAQI
2nd Aug 2025464 PMAQI
2nd Aug 2025525 PMAQI
2nd Aug 2025516 PMAQI
2nd Aug 2025527 PMAQI
2nd Aug 2025458 PMAQI
2nd Aug 2025449 PMAQI
2nd Aug 20254010 PMAQI
2nd Aug 20254411 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025381 AMAQI
3rd Aug 2025382 AMAQI
3rd Aug 2025393 AMAQI
25°C18/34°C
3rd Aug 2025404 AMAQI
3rd Aug 2025425 AMAQI
3rd Aug 2025406 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025418 AMAQI
3rd Aug 2025469 AMAQI
3rd Aug 20254810 AMAQI
3rd Aug 20255011 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025561 PMAQI
3rd Aug 2025602 PMAQI
3rd Aug 2025513 PMAQI
3rd Aug 2025624 PMAQI
3rd Aug 2025585 PMAQI
3rd Aug 2025566 PMAQI
3rd Aug 2025607 PMAQI
3rd Aug 2025578 PMAQI
3rd Aug 2025459 PMAQI
3rd Aug 20254610 PMAQI
3rd Aug 20254311 PMAQI
4th Aug 20254012 AMAQI
4th Aug 2025401 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025413 AMAQI
--°C/°C
4th Aug 2025454 AMAQI
4 AM4th Aug 2025465 AMAQI
4th Aug 2025456 AMAQI
4th Aug 2025457 AMAQI
11 AM
7 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
48AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 PM - 7 PM
42AQI
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. 48), while the lowest AQI was between 6 PM to 7 PM (Avg. 42).
Night time
Avg. Highest Time
12 AM - 3 AM
46AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM
40AQI
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. 46), while the lowest AQI was between 8 PM to 8 PM (Avg. 40).
2025 Days Vs Air Quality
Sakaki, Nagano, Japan
2025
85%
182
15%
32
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
182 DaysModerate
32 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 215 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
Sakaki, Nagano, 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
28AQI
28AQI
2nd January 2025
30AQI
30AQI
3rd January 2025
26AQI
26AQI
4th January 2025
26AQI
26AQI
5th January 2025
29AQI
29AQI
6th January 2025
33AQI
33AQI
7th January 2025
33AQI
33AQI
8th January 2025
27AQI
27AQI
9th January 2025
29AQI
29AQI
10th January 2025
25AQI
25AQI
11th January 2025
28AQI
28AQI
12th January 2025
28AQI
28AQI
13th January 2025
31AQI
31AQI
14th January 2025
38AQI
38AQI
15th January 2025
34AQI
34AQI
16th January 2025
30AQI
30AQI
17th January 2025
29AQI
29AQI
18th January 2025
29AQI
29AQI
19th January 2025
36AQI
36AQI
20th January 2025
39AQI
39AQI
21st January 2025
43AQI
43AQI
22nd January 2025
41AQI
41AQI
23rd January 2025
51AQI
51AQI
24th January 2025
42AQI
42AQI
25th January 2025
41AQI
41AQI
26th January 2025
33AQI
33AQI
27th January 2025
32AQI
32AQI
28th January 2025
33AQI
33AQI
29th January 2025
32AQI
32AQI
30th January 2025
31AQI
31AQI
31st January 2025
29AQI
29AQI
1st February 2025
39AQI
39AQI
2nd February 2025
33AQI
33AQI
3rd February 2025
37AQI
37AQI
4th February 2025
31AQI
31AQI
5th February 2025
32AQI
32AQI
6th February 2025
30AQI
30AQI
7th February 2025
31AQI
31AQI
8th February 2025
31AQI
31AQI
9th February 2025
29AQI
29AQI
10th February 2025
31AQI
31AQI
11th February 2025
31AQI
31AQI
12th February 2025
31AQI
31AQI
13th February 2025
31AQI
31AQI
14th February 2025
32AQI
32AQI
15th February 2025
29AQI
29AQI
16th February 2025
36AQI
36AQI
17th February 2025
37AQI
37AQI
18th February 2025
32AQI
32AQI
19th February 2025
31AQI
31AQI
20th February 2025
30AQI
30AQI
21st February 2025
32AQI
32AQI
22nd February 2025
33AQI
33AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
35AQI
35AQI
26th February 2025
42AQI
42AQI
27th February 2025
49AQI
49AQI
28th February 2025
48AQI
48AQI
1st March 2025
51AQI
51AQI
2nd March 2025
50AQI
50AQI
3rd March 2025
39AQI
39AQI
4th March 2025
36AQI
36AQI
5th March 2025
29AQI
29AQI
6th March 2025
32AQI
32AQI
7th March 2025
33AQI
33AQI
8th March 2025
42AQI
42AQI
9th March 2025
37AQI
37AQI
10th March 2025
42AQI
42AQI
11th March 2025
38AQI
38AQI
12th March 2025
36AQI
36AQI
13th March 2025
47AQI
47AQI
14th March 2025
40AQI
40AQI
15th March 2025
42AQI
42AQI
16th March 2025
23AQI
23AQI
17th March 2025
23AQI
23AQI
18th March 2025
27AQI
27AQI
19th March 2025
19AQI
19AQI
20th March 2025
26AQI
26AQI
21st March 2025
40AQI
40AQI
22nd March 2025
49AQI
49AQI
23rd March 2025
59AQI
59AQI
24th March 2025
60AQI
60AQI
25th March 2025
73AQI
73AQI
26th March 2025
72AQI
72AQI
27th March 2025
69AQI
69AQI
28th March 2025
42AQI
42AQI
29th March 2025
38AQI
38AQI
30th March 2025
34AQI
34AQI
31st March 2025
33AQI
33AQI
1st April 2025
27AQI
27AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
21AQI
21AQI
4th April 2025
21AQI
21AQI
5th April 2025
35AQI
35AQI
6th April 2025
25AQI
25AQI
7th April 2025
34AQI
34AQI
8th April 2025
38AQI
38AQI
9th April 2025
28AQI
28AQI
10th April 2025
43AQI
43AQI
11th April 2025
38AQI
38AQI
12th April 2025
46AQI
46AQI
13th April 2025
25AQI
25AQI
14th April 2025
32AQI
32AQI
15th April 2025
23AQI
23AQI
16th April 2025
21AQI
21AQI
17th April 2025
43AQI
43AQI
18th April 2025
52AQI
52AQI
19th April 2025
64AQI
64AQI
20th April 2025
54AQI
54AQI
21st April 2025
42AQI
42AQI
22nd April 2025
52AQI
52AQI
23rd April 2025
29AQI
29AQI
24th April 2025
29AQI
29AQI
25th April 2025
35AQI
35AQI
26th April 2025
47AQI
47AQI
27th April 2025
46AQI
46AQI
28th April 2025
46AQI
46AQI
29th April 2025
38AQI
38AQI
30th April 2025
53AQI
53AQI
1st May 2025
48AQI
48AQI
2nd May 2025
35AQI
35AQI
3rd May 2025
37AQI
37AQI
4th May 2025
34AQI
34AQI
5th May 2025
37AQI
37AQI
6th May 2025
28AQI
28AQI
7th May 2025
28AQI
28AQI
8th May 2025
31AQI
31AQI
9th May 2025
34AQI
34AQI
10th May 2025
23AQI
23AQI
11th May 2025
23AQI
23AQI
12th May 2025
28AQI
28AQI
13th May 2025
42AQI
42AQI
14th May 2025
48AQI
48AQI
15th May 2025
50AQI
50AQI
16th May 2025
54AQI
54AQI
17th May 2025
35AQI
35AQI
18th May 2025
41AQI
41AQI
19th May 2025
38AQI
38AQI
20th May 2025
57AQI
57AQI
21st May 2025
63AQI
63AQI
22nd May 2025
53AQI
53AQI
23rd May 2025
50AQI
50AQI
24th May 2025
43AQI
43AQI
25th May 2025
28AQI
28AQI
26th May 2025
30AQI
30AQI
27th May 2025
33AQI
33AQI
28th May 2025
30AQI
30AQI
29th May 2025
38AQI
38AQI
30th May 2025
27AQI
27AQI
31st May 2025
22AQI
22AQI
1st June 2025
19AQI
19AQI
2nd June 2025
34AQI
34AQI
3rd June 2025
28AQI
28AQI
4th June 2025
31AQI
31AQI
5th June 2025
37AQI
37AQI
6th June 2025
45AQI
45AQI
7th June 2025
49AQI
49AQI
8th June 2025
58AQI
58AQI
9th June 2025
59AQI
59AQI
10th June 2025
40AQI
40AQI
11th June 2025
34AQI
34AQI
12th June 2025
45AQI
45AQI
13th June 2025
50AQI
50AQI
14th June 2025
36AQI
36AQI
15th June 2025
30AQI
30AQI
16th June 2025
33AQI
33AQI
17th June 2025
38AQI
38AQI
18th June 2025
46AQI
46AQI
19th June 2025
51AQI
51AQI
20th June 2025
55AQI
55AQI
21st June 2025
54AQI
54AQI
22nd June 2025
54AQI
54AQI
23rd June 2025
39AQI
39AQI
24th June 2025
39AQI
39AQI
25th June 2025
38AQI
38AQI
26th June 2025
36AQI
36AQI
27th June 2025
47AQI
47AQI
28th June 2025
42AQI
42AQI
29th June 2025
46AQI
46AQI
30th June 2025
52AQI
52AQI
1st July 2025
57AQI
57AQI
2nd July 2025
47AQI
47AQI
3rd July 2025
51AQI
51AQI
4th July 2025
54AQI
54AQI
5th July 2025
58AQI
58AQI
6th July 2025
56AQI
56AQI
7th July 2025
57AQI
57AQI
8th July 2025
61AQI
61AQI
9th July 2025
62AQI
62AQI
10th July 2025
57AQI
57AQI
11th July 2025
43AQI
43AQI
12th July 2025
43AQI
43AQI
13th July 2025
45AQI
45AQI
14th July 2025
39AQI
39AQI
15th July 2025
33AQI
33AQI
16th July 2025
43AQI
43AQI
17th July 2025
32AQI
32AQI
18th July 2025
35AQI
35AQI
19th July 2025
35AQI
35AQI
20th July 2025
36AQI
36AQI
21st July 2025
39AQI
39AQI
22nd July 2025
44AQI
44AQI
23rd July 2025
44AQI
44AQI
24th July 2025
48AQI
48AQI
25th July 2025
47AQI
47AQI
26th July 2025
46AQI
46AQI
27th July 2025
42AQI
42AQI
28th July 2025
42AQI
42AQI
29th July 2025
48AQI
48AQI
30th July 2025
47AQI
47AQI
31st July 2025
45AQI
45AQI
1st August 2025
42AQI
42AQI
2nd August 2025
44AQI
44AQI
33AQI
34AQI
41AQI
37AQI
38AQI
42AQI
46AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202539AQI
30
1
28
25
6
25
5
27
4
23
7
22
9
2
182
32
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
January33AQI
202436AQI
29
2
28
1
25
6
18
12
28
3
23
7
28
3
29
2
27
3
31
28
2
31
325
41
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
December31AQI
202338AQI
21
10
26
2
21
10
22
8
27
4
28
2
24
7
31
30
31
23
6
26
5
310
54
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
October31AQI
202237AQI
29
2
20
1
23
8
20
10
21
10
21
9
21
3
1
27
1
26
5
25
5
31
265
54
Highest AQI recorded in
May45AQI
Lowest AQI recorded in
August26AQI
202135AQI
29
2
21
7
25
4
19
2
27
4
22
8
25
6
31
30
28
3
26
4
26
5
309
45
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
January29AQI
202034AQI
12
1
18
3
18
27
3
29
2
18
11
2
19
29
2
21
9
28
3
219
34
2
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
July25AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
39AQILeast Polluted Year Recorded
2020(Avg.)
34AQISakaki's annual 2025 AQI (39) shows an average percentage change of 7.7% (worsened AQI) compared to previous years: 2020 (34), 2021 (35), 2022 (37), 2023 (38), 2024 (36).
