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HistoryAQIPM2.5PM10COSO2NO2O3

Hokuto, Hokkaido, Japan Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

October Air Quality Analysis

Hokuto, Hokkaido, Japan

2021
2022
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Oct 2025
64AQI
Lowest AQI recorded on
5th Oct 2022
18AQI

Same Day Analysis (15th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 15th Oct - 16th Oct 2025

Hokuto, Hokkaido, Japan

AQI
Day
Night
.

5 AM15th Oct 2025

5 PM

4 AM16th Oct 2025

Day time
Avg. Highest Time
10AM15th Oct

56AQI

Avg. Lowest Time
1PM15th Oct

43AQI

Night time
Avg. Highest Time
10PM15th Oct

76AQI

Avg. Lowest Time
3AM16th Oct

56AQI

In the last 24 hours,

Hokuto's AQI reached its highest point of 76 at 10 PM during the Night, while the lowest point, 43, was recorded at 1 PM during the Day between 15th Oct and 16th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Hokuto, Hokkaido, Japan

SepOct
16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
16th Sep 2025355 AMAQI
16th Sep 2025356 AMAQI
16th Sep 2025377 AMAQI
16th Sep 2025368 AMAQI
16th Sep 2025359 AMAQI
16th Sep 20253710 AMAQI
16th Sep 20253111 AMAQI
16th Sep 20253412 PMAQI
16th Sep 2025301 PMAQI
16th Sep 2025312 PMAQI
16th Sep 2025233 PMAQI
16th Sep 2025264 PMAQI
16th Sep 2025325 PMAQI
16th Sep 2025356 PMAQI
16th Sep 2025417 PMAQI
16th Sep 2025448 PMAQI
16th Sep 2025419 PMAQI
16th Sep 20253910 PMAQI
16th Sep 20253811 PMAQI
17th Sep 20254212 AMAQI
17th Sep 2025371 AMAQI
17th Sep 2025362 AMAQI
17th Sep 2025343 AMAQI
17th Sep 2025344 AMAQI

21°C17/25°C

17th Sep 2025345 AMAQI
17th Sep 2025346 AMAQI
17th Sep 2025347 AMAQI
17th Sep 2025348 AMAQI
17th Sep 2025409 AMAQI
17th Sep 20253210 AMAQI
17th Sep 20254011 AMAQI
17th Sep 20253012 PMAQI
17th Sep 2025351 PMAQI
17th Sep 2025442 PMAQI
17th Sep 2025363 PMAQI
17th Sep 2025324 PMAQI
17th Sep 2025375 PMAQI
17th Sep 2025346 PMAQI
17th Sep 2025337 PMAQI
17th Sep 2025358 PMAQI
17th Sep 2025339 PMAQI
17th Sep 20253410 PMAQI
17th Sep 20253411 PMAQI
18th Sep 20253412 AMAQI
18th Sep 2025361 AMAQI
18th Sep 2025362 AMAQI
18th Sep 2025363 AMAQI
18th Sep 2025384 AMAQI

21°C17/25°C

18th Sep 2025365 AMAQI
18th Sep 2025366 AMAQI
18th Sep 2025367 AMAQI
18th Sep 2025368 AMAQI
18th Sep 2025289 AMAQI
18th Sep 20252910 AMAQI
18th Sep 20252611 AMAQI
18th Sep 20252112 PMAQI
18th Sep 2025201 PMAQI
18th Sep 2025172 PMAQI
18th Sep 2025173 PMAQI
18th Sep 2025164 PMAQI
18th Sep 2025185 PMAQI
18th Sep 2025186 PMAQI
18th Sep 2025187 PMAQI
18th Sep 2025248 PMAQI
18th Sep 2025299 PMAQI
18th Sep 20253010 PMAQI
18th Sep 20252911 PMAQI
19th Sep 20252812 AMAQI
19th Sep 2025321 AMAQI
19th Sep 2025332 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025334 AMAQI

18°C14/23°C

19th Sep 2025325 AMAQI
19th Sep 2025336 AMAQI
19th Sep 2025327 AMAQI
19th Sep 2025328 AMAQI
19th Sep 2025229 AMAQI
19th Sep 20251910 AMAQI
19th Sep 20252011 AMAQI
19th Sep 20252112 PMAQI
19th Sep 2025181 PMAQI
19th Sep 2025152 PMAQI
19th Sep 2025183 PMAQI
19th Sep 2025184 PMAQI
19th Sep 2025185 PMAQI
19th Sep 2025206 PMAQI
19th Sep 2025217 PMAQI
19th Sep 2025258 PMAQI
19th Sep 2025309 PMAQI
19th Sep 20253110 PMAQI
19th Sep 20252811 PMAQI
20th Sep 20252912 AMAQI
20th Sep 2025301 AMAQI
20th Sep 2025322 AMAQI
20th Sep 2025323 AMAQI
20th Sep 2025314 AMAQI

17°C13/21°C

20th Sep 2025295 AMAQI
20th Sep 2025316 AMAQI
20th Sep 2025317 AMAQI
20th Sep 2025318 AMAQI
20th Sep 2025269 AMAQI
20th Sep 20252610 AMAQI
20th Sep 20252611 AMAQI
20th Sep 20252312 PMAQI
20th Sep 2025331 PMAQI
20th Sep 2025322 PMAQI
20th Sep 2025223 PMAQI
20th Sep 2025224 PMAQI
20th Sep 2025205 PMAQI
20th Sep 2025266 PMAQI
20th Sep 2025317 PMAQI
20th Sep 2025248 PMAQI
20th Sep 2025279 PMAQI
20th Sep 20252610 PMAQI
20th Sep 20252511 PMAQI
21st Sep 20252512 AMAQI
21st Sep 2025281 AMAQI
21st Sep 2025292 AMAQI
21st Sep 2025293 AMAQI
21st Sep 2025344 AMAQI

18°C15/21°C

21st Sep 2025395 AMAQI
21st Sep 2025426 AMAQI
21st Sep 2025417 AMAQI
21st Sep 2025408 AMAQI
21st Sep 2025249 AMAQI
21st Sep 20251910 AMAQI
21st Sep 20252011 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025221 PMAQI
21st Sep 2025172 PMAQI
21st Sep 2025203 PMAQI
21st Sep 2025184 PMAQI
21st Sep 2025175 PMAQI
21st Sep 2025206 PMAQI
21st Sep 2025227 PMAQI
21st Sep 2025218 PMAQI
21st Sep 2025289 PMAQI
21st Sep 20252610 PMAQI
21st Sep 20252811 PMAQI
22nd Sep 20252712 AMAQI
22nd Sep 2025281 AMAQI
22nd Sep 2025292 AMAQI
22nd Sep 2025283 AMAQI
22nd Sep 2025284 AMAQI

17°C14/21°C

22nd Sep 2025295 AMAQI
22nd Sep 2025286 AMAQI
22nd Sep 2025297 AMAQI
22nd Sep 2025288 AMAQI
22nd Sep 2025429 AMAQI
22nd Sep 20254710 AMAQI
22nd Sep 20253211 AMAQI
22nd Sep 20253012 PMAQI
22nd Sep 2025221 PMAQI
22nd Sep 2025222 PMAQI
22nd Sep 2025233 PMAQI
22nd Sep 2025204 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025226 PMAQI
22nd Sep 2025237 PMAQI
22nd Sep 2025258 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252610 PMAQI
22nd Sep 20252611 PMAQI
23rd Sep 20252612 AMAQI
23rd Sep 2025271 AMAQI
23rd Sep 2025302 AMAQI
23rd Sep 2025313 AMAQI
23rd Sep 2025334 AMAQI

17°C13/21°C

23rd Sep 2025365 AMAQI
23rd Sep 2025386 AMAQI
23rd Sep 2025377 AMAQI
23rd Sep 2025348 AMAQI
23rd Sep 2025279 AMAQI
23rd Sep 20252410 AMAQI
23rd Sep 20252411 AMAQI
23rd Sep 20252912 PMAQI
23rd Sep 2025341 PMAQI
23rd Sep 2025202 PMAQI
23rd Sep 2025193 PMAQI
23rd Sep 2025194 PMAQI
23rd Sep 2025235 PMAQI
23rd Sep 2025226 PMAQI
23rd Sep 2025217 PMAQI
23rd Sep 2025258 PMAQI
23rd Sep 2025249 PMAQI
23rd Sep 20252610 PMAQI
23rd Sep 20252611 PMAQI
24th Sep 20252612 AMAQI
24th Sep 2025261 AMAQI
24th Sep 2025292 AMAQI
24th Sep 2025293 AMAQI
24th Sep 2025284 AMAQI

17°C15/21°C

24th Sep 2025305 AMAQI
24th Sep 2025306 AMAQI
24th Sep 2025307 AMAQI
24th Sep 2025298 AMAQI
24th Sep 2025319 AMAQI
24th Sep 20253010 AMAQI
24th Sep 20252411 AMAQI
24th Sep 20252512 PMAQI
24th Sep 2025221 PMAQI
24th Sep 2025202 PMAQI
24th Sep 2025253 PMAQI
24th Sep 2025294 PMAQI
24th Sep 2025295 PMAQI
24th Sep 2025286 PMAQI
24th Sep 2025357 PMAQI
24th Sep 2025298 PMAQI
24th Sep 2025389 PMAQI
24th Sep 20254210 PMAQI
24th Sep 20254611 PMAQI
25th Sep 20254812 AMAQI
25th Sep 2025481 AMAQI
25th Sep 2025242 AMAQI
25th Sep 2025273 AMAQI
25th Sep 2025274 AMAQI

19°C16/22°C

25th Sep 2025265 AMAQI
25th Sep 2025266 AMAQI
25th Sep 2025267 AMAQI
25th Sep 2025268 AMAQI
25th Sep 2025319 AMAQI
25th Sep 20253210 AMAQI
25th Sep 20253011 AMAQI
25th Sep 20252612 PMAQI
25th Sep 2025281 PMAQI
25th Sep 2025332 PMAQI
25th Sep 2025253 PMAQI
25th Sep 2025294 PMAQI
25th Sep 2025265 PMAQI
25th Sep 2025296 PMAQI
25th Sep 2025267 PMAQI
25th Sep 2025248 PMAQI
25th Sep 2025269 PMAQI
25th Sep 20252410 PMAQI
25th Sep 20252411 PMAQI
26th Sep 20252412 AMAQI
26th Sep 2025261 AMAQI
26th Sep 2025262 AMAQI
26th Sep 2025213 AMAQI
26th Sep 2025194 AMAQI

19°C17/23°C

26th Sep 2025265 AMAQI
26th Sep 2025366 AMAQI
26th Sep 2025387 AMAQI
26th Sep 2025468 AMAQI
26th Sep 2025449 AMAQI
26th Sep 20254810 AMAQI
26th Sep 20254011 AMAQI
26th Sep 20253012 PMAQI
26th Sep 2025301 PMAQI
26th Sep 2025322 PMAQI
26th Sep 2025333 PMAQI
26th Sep 2025324 PMAQI
26th Sep 2025365 PMAQI
26th Sep 2025376 PMAQI
26th Sep 2025337 PMAQI
26th Sep 2025308 PMAQI
26th Sep 2025299 PMAQI
26th Sep 20252710 PMAQI
26th Sep 20252511 PMAQI
27th Sep 20252412 AMAQI
27th Sep 2025211 AMAQI
27th Sep 2025202 AMAQI
27th Sep 2025193 AMAQI
27th Sep 2025184 AMAQI

19°C15/23°C

27th Sep 2025225 AMAQI
27th Sep 2025226 AMAQI
27th Sep 2025197 AMAQI
27th Sep 2025208 AMAQI
27th Sep 2025169 AMAQI
27th Sep 20251910 AMAQI
27th Sep 20252011 AMAQI
27th Sep 20252212 PMAQI
27th Sep 2025201 PMAQI
27th Sep 202592 PMAQI
27th Sep 2025103 PMAQI
27th Sep 2025164 PMAQI
27th Sep 2025195 PMAQI
27th Sep 2025196 PMAQI
27th Sep 2025187 PMAQI
27th Sep 2025178 PMAQI
27th Sep 2025199 PMAQI
27th Sep 20252010 PMAQI
27th Sep 20251811 PMAQI
28th Sep 20251712 AMAQI
28th Sep 2025151 AMAQI
28th Sep 2025132 AMAQI
28th Sep 2025173 AMAQI
28th Sep 2025254 AMAQI

18°C15/23°C

28th Sep 2025225 AMAQI
28th Sep 2025286 AMAQI
28th Sep 2025227 AMAQI
28th Sep 2025388 AMAQI
28th Sep 2025529 AMAQI
28th Sep 20253110 AMAQI
28th Sep 20251711 AMAQI
28th Sep 20251712 PMAQI
28th Sep 2025171 PMAQI
28th Sep 2025152 PMAQI
28th Sep 2025143 PMAQI
28th Sep 2025184 PMAQI
28th Sep 2025225 PMAQI
28th Sep 2025306 PMAQI
28th Sep 2025487 PMAQI
28th Sep 2025428 PMAQI
28th Sep 2025349 PMAQI
28th Sep 20252510 PMAQI
28th Sep 20252211 PMAQI
29th Sep 20253312 AMAQI
29th Sep 2025321 AMAQI
29th Sep 2025302 AMAQI
29th Sep 2025403 AMAQI
29th Sep 2025394 AMAQI

19°C15/23°C

29th Sep 2025345 AMAQI
29th Sep 2025336 AMAQI
29th Sep 2025387 AMAQI
29th Sep 2025398 AMAQI
29th Sep 2025439 AMAQI
29th Sep 20253110 AMAQI
29th Sep 20254111 AMAQI
29th Sep 20254912 PMAQI
29th Sep 2025451 PMAQI
29th Sep 2025492 PMAQI
29th Sep 2025503 PMAQI
29th Sep 2025454 PMAQI
29th Sep 2025405 PMAQI
29th Sep 2025396 PMAQI
29th Sep 2025397 PMAQI
29th Sep 2025488 PMAQI
29th Sep 2025499 PMAQI
29th Sep 20254010 PMAQI
29th Sep 20254211 PMAQI
30th Sep 20253712 AMAQI
30th Sep 2025421 AMAQI
30th Sep 2025322 AMAQI
30th Sep 2025343 AMAQI
30th Sep 2025304 AMAQI

19°C16/23°C

30th Sep 2025315 AMAQI
30th Sep 2025446 AMAQI
30th Sep 2025437 AMAQI
30th Sep 2025398 AMAQI
30th Sep 2025479 AMAQI
30th Sep 20254710 AMAQI
30th Sep 20254711 AMAQI
30th Sep 20254612 PMAQI
30th Sep 2025521 PMAQI
30th Sep 2025462 PMAQI
30th Sep 2025503 PMAQI
30th Sep 2025424 PMAQI
30th Sep 2025475 PMAQI
30th Sep 2025516 PMAQI
30th Sep 2025497 PMAQI
30th Sep 2025518 PMAQI
30th Sep 2025519 PMAQI
30th Sep 20254610 PMAQI
30th Sep 20254711 PMAQI
1st Oct 20254112 AMAQI
1st Oct 2025491 AMAQI
1st Oct 2025472 AMAQI
1st Oct 2025563 AMAQI
1st Oct 2025514 AMAQI

18°C15/21°C

1st Oct 2025485 AMAQI
1st Oct 2025466 AMAQI
1st Oct 2025467 AMAQI
1st Oct 2025538 AMAQI
1st Oct 2025559 AMAQI
1st Oct 20254710 AMAQI
1st Oct 20254211 AMAQI
1st Oct 20254212 PMAQI
1st Oct 2025511 PMAQI
1st Oct 2025512 PMAQI
1st Oct 2025543 PMAQI
1st Oct 2025554 PMAQI
1st Oct 2025555 PMAQI
1st Oct 2025396 PMAQI
1st Oct 2025307 PMAQI
1st Oct 2025248 PMAQI
1st Oct 2025359 PMAQI
1st Oct 20254410 PMAQI
1st Oct 20253811 PMAQI
2nd Oct 20254512 AMAQI
2nd Oct 2025531 AMAQI
2nd Oct 2025502 AMAQI
2nd Oct 2025473 AMAQI
2nd Oct 2025494 AMAQI

19°C17/22°C

2nd Oct 2025485 AMAQI
2nd Oct 2025486 AMAQI
2nd Oct 2025487 AMAQI
2nd Oct 2025528 AMAQI
2nd Oct 2025499 AMAQI
2nd Oct 20255210 AMAQI
2nd Oct 20254811 AMAQI
2nd Oct 20254912 PMAQI
2nd Oct 2025481 PMAQI
2nd Oct 2025522 PMAQI
2nd Oct 2025463 PMAQI
2nd Oct 2025544 PMAQI
2nd Oct 2025525 PMAQI
2nd Oct 2025526 PMAQI
2nd Oct 2025547 PMAQI
2nd Oct 2025498 PMAQI
2nd Oct 2025519 PMAQI
2nd Oct 20255110 PMAQI
2nd Oct 20255211 PMAQI
3rd Oct 20255412 AMAQI
3rd Oct 2025561 AMAQI
3rd Oct 2025532 AMAQI
3rd Oct 2025533 AMAQI
3rd Oct 2025474 AMAQI

19°C16/23°C

3rd Oct 2025495 AMAQI
3rd Oct 2025556 AMAQI
3rd Oct 2025537 AMAQI
3rd Oct 2025478 AMAQI
3rd Oct 2025459 AMAQI
3rd Oct 20254210 AMAQI
3rd Oct 20254411 AMAQI
3rd Oct 20254212 PMAQI
3rd Oct 2025501 PMAQI
3rd Oct 2025492 PMAQI
3rd Oct 2025503 PMAQI
3rd Oct 2025534 PMAQI
3rd Oct 2025525 PMAQI
3rd Oct 2025546 PMAQI
3rd Oct 2025527 PMAQI
3rd Oct 2025488 PMAQI
3rd Oct 2025729 PMAQI
3rd Oct 20257910 PMAQI
3rd Oct 20258311 PMAQI
4th Oct 20258212 AMAQI
4th Oct 2025281 AMAQI
4th Oct 2025562 AMAQI
4th Oct 2025653 AMAQI
4th Oct 2025634 AMAQI

19°C15/24°C

4th Oct 2025595 AMAQI
4th Oct 2025556 AMAQI
4th Oct 2025577 AMAQI
4th Oct 2025568 AMAQI
4th Oct 2025629 AMAQI
4th Oct 20256110 AMAQI
4th Oct 20256711 AMAQI
4th Oct 20257112 PMAQI
4th Oct 2025721 PMAQI
4th Oct 2025712 PMAQI
4th Oct 2025653 PMAQI
4th Oct 2025634 PMAQI
4th Oct 2025635 PMAQI
4th Oct 2025616 PMAQI
4th Oct 2025657 PMAQI
4th Oct 2025678 PMAQI
4th Oct 2025689 PMAQI
4th Oct 20256910 PMAQI
4th Oct 20256811 PMAQI
5th Oct 20256712 AMAQI
5th Oct 2025651 AMAQI
5th Oct 2025632 AMAQI
5th Oct 2025613 AMAQI
5th Oct 2025614 AMAQI

19°C17/22°C

5th Oct 2025725 AMAQI
5th Oct 2025636 AMAQI
5th Oct 2025607 AMAQI
5th Oct 2025618 AMAQI
5th Oct 2025669 AMAQI
5th Oct 20256810 AMAQI
5th Oct 20258411 AMAQI
5th Oct 20258312 PMAQI
5th Oct 2025761 PMAQI
5th Oct 2025592 PMAQI
5th Oct 2025603 PMAQI
5th Oct 2025634 PMAQI
5th Oct 2025595 PMAQI
5th Oct 2025586 PMAQI
5th Oct 2025557 PMAQI
5th Oct 2025568 PMAQI
5th Oct 2025599 PMAQI
5th Oct 20255510 PMAQI
5th Oct 20255511 PMAQI
6th Oct 20255512 AMAQI
6th Oct 2025521 AMAQI
6th Oct 2025532 AMAQI
6th Oct 2025533 AMAQI
6th Oct 2025494 AMAQI

20°C17/23°C

6th Oct 2025425 AMAQI
6th Oct 2025526 AMAQI
6th Oct 2025507 AMAQI
6th Oct 2025538 AMAQI
6th Oct 2025539 AMAQI
6th Oct 20254710 AMAQI
6th Oct 20254711 AMAQI
6th Oct 20254412 PMAQI
6th Oct 2025411 PMAQI
6th Oct 2025452 PMAQI
6th Oct 2025423 PMAQI
6th Oct 2025424 PMAQI
6th Oct 2025465 PMAQI
6th Oct 2025526 PMAQI
6th Oct 2025497 PMAQI
6th Oct 2025538 PMAQI
6th Oct 2025559 PMAQI
6th Oct 20255410 PMAQI
6th Oct 20255011 PMAQI
7th Oct 20254812 AMAQI
7th Oct 2025441 AMAQI
7th Oct 2025402 AMAQI

16°C12/18°C

7th Oct 2025398 PMAQI
7th Oct 2025429 PMAQI
7th Oct 20253810 PMAQI
7th Oct 20254211 PMAQI
8th Oct 20254212 AMAQI
8th Oct 2025571 AMAQI
8th Oct 2025562 AMAQI
8th Oct 2025573 AMAQI
8th Oct 2025514 AMAQI

15°C11/18°C

8th Oct 2025515 AMAQI
8th Oct 2025396 AMAQI
8th Oct 2025387 AMAQI
8th Oct 2025478 AMAQI
8th Oct 2025429 AMAQI
8th Oct 20254810 AMAQI
8th Oct 20255311 AMAQI
8th Oct 20255412 PMAQI
8th Oct 2025531 PMAQI
8th Oct 2025422 PMAQI
8th Oct 2025463 PMAQI
8th Oct 2025524 PMAQI
8th Oct 2025555 PMAQI
8th Oct 2025556 PMAQI
8th Oct 2025537 PMAQI
8th Oct 2025418 PMAQI
8th Oct 2025589 PMAQI
8th Oct 20255610 PMAQI
8th Oct 20255611 PMAQI
9th Oct 20256112 AMAQI
9th Oct 2025621 AMAQI
9th Oct 2025642 AMAQI
9th Oct 2025443 AMAQI
9th Oct 2025384 AMAQI

17°C11/20°C

9th Oct 2025445 AMAQI
9th Oct 2025526 AMAQI
9th Oct 2025537 AMAQI
9th Oct 2025518 AMAQI
9th Oct 2025489 AMAQI
9th Oct 20254710 AMAQI
9th Oct 20254011 AMAQI
9th Oct 20254012 PMAQI
9th Oct 2025421 PMAQI
9th Oct 2025362 PMAQI
9th Oct 2025433 PMAQI
9th Oct 2025524 PMAQI
9th Oct 2025535 PMAQI
9th Oct 2025486 PMAQI
9th Oct 2025517 PMAQI
9th Oct 2025268 PMAQI
9th Oct 2025159 PMAQI
9th Oct 20252510 PMAQI
9th Oct 20252811 PMAQI
10th Oct 20252912 AMAQI
10th Oct 2025551 AMAQI
10th Oct 2025572 AMAQI
10th Oct 2025563 AMAQI
10th Oct 2025434 AMAQI

13°C11/15°C

10th Oct 2025345 AMAQI
10th Oct 2025416 AMAQI
10th Oct 2025547 AMAQI
10th Oct 2025538 AMAQI
10th Oct 2025549 AMAQI
10th Oct 20252510 AMAQI
10th Oct 20253911 AMAQI
10th Oct 20254812 PMAQI
10th Oct 2025531 PMAQI
10th Oct 2025552 PMAQI
10th Oct 2025543 PMAQI
10th Oct 2025474 PMAQI
10th Oct 2025425 PMAQI
10th Oct 2025446 PMAQI
10th Oct 2025507 PMAQI
10th Oct 2025518 PMAQI
10th Oct 2025609 PMAQI
10th Oct 20256110 PMAQI
10th Oct 20255611 PMAQI
11th Oct 20255212 AMAQI
11th Oct 2025341 AMAQI
11th Oct 2025472 AMAQI
11th Oct 2025533 AMAQI
11th Oct 2025534 AMAQI

12°C9/16°C

11th Oct 2025455 AMAQI
11th Oct 2025396 AMAQI
11th Oct 2025507 AMAQI
11th Oct 2025538 AMAQI
11th Oct 2025509 AMAQI
11th Oct 20254610 AMAQI
11th Oct 20255311 AMAQI
11th Oct 20255412 PMAQI
11th Oct 2025521 PMAQI
11th Oct 2025542 PMAQI
11th Oct 2025533 PMAQI
11th Oct 2025554 PMAQI
11th Oct 2025525 PMAQI
11th Oct 2025446 PMAQI
11th Oct 2025507 PMAQI
11th Oct 2025498 PMAQI
11th Oct 2025539 PMAQI
11th Oct 20254810 PMAQI
11th Oct 20255311 PMAQI
12th Oct 20255612 AMAQI
12th Oct 2025621 AMAQI
12th Oct 2025572 AMAQI
12th Oct 2025583 AMAQI
12th Oct 2025484 AMAQI

11°C8/14°C

12th Oct 2025495 AMAQI
12th Oct 2025516 AMAQI
12th Oct 2025247 AMAQI
12th Oct 2025168 AMAQI
12th Oct 2025229 AMAQI
12th Oct 20255810 AMAQI
12th Oct 20257211 AMAQI
12th Oct 20257412 PMAQI
12th Oct 2025701 PMAQI
12th Oct 2025712 PMAQI
12th Oct 2025773 PMAQI
12th Oct 2025714 PMAQI
12th Oct 2025665 PMAQI
12th Oct 2025696 PMAQI
12th Oct 2025607 PMAQI
12th Oct 2025588 PMAQI
12th Oct 2025599 PMAQI
12th Oct 20255610 PMAQI
12th Oct 20255611 PMAQI
13th Oct 20255612 AMAQI
13th Oct 2025591 AMAQI
13th Oct 2025602 AMAQI
13th Oct 2025543 AMAQI
13th Oct 2025564 AMAQI

16°C14/17°C

13th Oct 2025535 AMAQI
13th Oct 2025536 AMAQI
13th Oct 2025517 AMAQI
13th Oct 2025468 AMAQI
13th Oct 2025449 AMAQI
13th Oct 20254810 AMAQI
13th Oct 20255211 AMAQI
13th Oct 20254412 PMAQI
13th Oct 2025401 PMAQI
13th Oct 2025432 PMAQI
13th Oct 2025473 PMAQI
13th Oct 2025474 PMAQI
13th Oct 2025495 PMAQI
13th Oct 2025436 PMAQI
13th Oct 2025437 PMAQI
13th Oct 2025508 PMAQI
13th Oct 2025569 PMAQI
13th Oct 20255610 PMAQI
13th Oct 20255311 PMAQI
14th Oct 20254812 AMAQI
14th Oct 2025541 AMAQI
14th Oct 2025542 AMAQI
14th Oct 2025543 AMAQI
14th Oct 2025544 AMAQI

14°C11/18°C

14th Oct 2025525 AMAQI
14th Oct 2025526 AMAQI
14th Oct 2025427 AMAQI
14th Oct 2025408 AMAQI
14th Oct 2025459 AMAQI
14th Oct 20255110 AMAQI
14th Oct 20255411 AMAQI
14th Oct 20255612 PMAQI
14th Oct 2025521 PMAQI
14th Oct 2025542 PMAQI
14th Oct 2025503 PMAQI
14th Oct 2025554 PMAQI
14th Oct 2025565 PMAQI
14th Oct 2025556 PMAQI
14th Oct 2025567 PMAQI
14th Oct 2025578 PMAQI
14th Oct 2025559 PMAQI
14th Oct 20255610 PMAQI
14th Oct 20255711 PMAQI
15th Oct 20256012 AMAQI
15th Oct 2025421 AMAQI
15th Oct 2025492 AMAQI
15th Oct 2025543 AMAQI
15th Oct 2025544 AMAQI

13°C9/16°C

15th Oct 2025485 AMAQI
15th Oct 2025486 AMAQI
15th Oct 2025477 AMAQI
15th Oct 2025508 AMAQI
15th Oct 2025539 AMAQI
15th Oct 20255610 AMAQI
15th Oct 20255411 AMAQI
15th Oct 20255412 PMAQI
15th Oct 2025431 PMAQI
15th Oct 2025502 PMAQI
15th Oct 2025503 PMAQI
15th Oct 2025544 PMAQI
15th Oct 2025605 PMAQI
15th Oct 2025696 PMAQI
15th Oct 2025637 PMAQI
15th Oct 2025638 PMAQI
15th Oct 2025719 PMAQI
15th Oct 20257610 PMAQI
15th Oct 20257511 PMAQI
16th Oct 20257212 AMAQI
16th Oct 2025681 AMAQI
16th Oct 2025682 AMAQI
16th Oct 2025563 AMAQI
16th Oct 2025604 AMAQI

13°C10/18°C

16th Oct 2025605 AMAQI
5 AM
16th Oct 2025616 AMAQI
16th Oct 2025347 AMAQI
16th Oct 2025588 AMAQI
16th Oct 2025589 AMAQI
16th Oct 20256210 AMAQI
11 AM
5 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 6 AM

42AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
7 AM - 5 PM

40AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 AM (Avg. 42), while the lowest AQI was between 7 AM to 5 PM (Avg. 40).
Night time
Avg. Highest Time
12 AM - 11 PM

42AQI

11 hours / Day
330 hours / Month
Avg. Lowest Time
12 AM - 8 PM

41AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 8 PM (Avg. 41).

2025 Days Vs Air Quality

Hokuto, Hokkaido, Japan

2025

94%

270

6%

18

Total number of days with different AQI categories in last 289 days in 2025 (76 days remaining)

Good
270 Days
Moderate
18 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 94%

Health Risk Level:

Very Low

In 2025, 94% of 289 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Hokuto, Hokkaido, Japan

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

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

32AQI

31AQI

36AQI

30AQI

38AQI

41AQI

45AQI

37AQI

33AQI

52AQI

No. of days

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

202537AQI

30
1
28
31
30
30
1
28
2
25
6
31
30
7
8
270
18

Highest AQI recorded in

October

52AQI

Lowest AQI recorded in

April

30AQI

202434AQI

15
1
2
3
1
2
1
12
29
1
23
8
31
29
31
30
31
238
12

Highest AQI recorded in

March

46AQI

Lowest AQI recorded in

December

25AQI

202336AQI

3
30
1
33
1

Highest AQI recorded in

December

36AQI

Lowest AQI recorded in

November

35AQI

202232AQI

31
20
3
30
1
23
7
27
4
29
1
25
3
23
14
225
16

Highest AQI recorded in

April

37AQI

Lowest AQI recorded in

January

27AQI

202130AQI

28
3
27
1
28
3
29
1
29
2
29
1
30
1
29
2
30
31
29
1
31
350
15

Highest AQI recorded in

March

34AQI

Lowest AQI recorded in

October

26AQI

202026AQI

13
20
1
18
30
31
29
2
19
31
28
30
1
249
4

Highest AQI recorded in

August

33AQI

Lowest AQI recorded in

November

22AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
37AQI
Least Polluted Year Recorded
2020(Avg.)
26AQI

Hokuto's annual 2025 AQI (37) shows an average percentage change of 17.4% (worsened AQI) compared to previous years: 2020 (26), 2021 (30), 2022 (32), 2023 (36), 2024 (34).