Koencho, 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+
August Air Quality Analysis
Koencho, Hokkaido, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
21st Aug 2021
52AQILowest AQI recorded on
6th Aug 2023
9AQISame Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Koencho, Hokkaido, Japan
AQI
Day
Night
.
4 AM7th Aug 2025
6 PM
3 AM8th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
8AM7th Aug
37AQI
Avg. Lowest Time
6PM7th Aug
19AQI
In the last 24 hours,
Koencho's AQI reached its highest point of 37 at 8 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Koencho, Hokkaido, Japan
JulAug
09th - 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 - 05th05th - 06th06th - 07th07th - 08th08th
Day
Night
9th Jul 2025504 AMAQI
9th Jul 2025505 AMAQI
9th Jul 2025516 AMAQI
9th Jul 2025517 AMAQI
9th Jul 2025508 AMAQI
9th Jul 2025319 AMAQI
9th Jul 20252610 AMAQI
9th Jul 20252811 AMAQI
9th Jul 20252612 PMAQI
9th Jul 2025281 PMAQI
9th Jul 2025302 PMAQI
9th Jul 2025283 PMAQI
9th Jul 2025324 PMAQI
9th Jul 2025305 PMAQI
9th Jul 2025276 PMAQI
9th Jul 2025287 PMAQI
9th Jul 2025338 PMAQI
9th Jul 2025439 PMAQI
9th Jul 20254210 PMAQI
9th Jul 20254211 PMAQI
10th Jul 20254112 AMAQI
10th Jul 2025451 AMAQI
10th Jul 2025522 AMAQI
10th Jul 2025523 AMAQI
18°C11/24°C
10th Jul 2025514 AMAQI
10th Jul 2025495 AMAQI
10th Jul 2025486 AMAQI
10th Jul 2025487 AMAQI
10th Jul 2025498 AMAQI
10th Jul 2025279 AMAQI
10th Jul 20252010 AMAQI
10th Jul 20252311 AMAQI
10th Jul 20252212 PMAQI
10th Jul 2025241 PMAQI
10th Jul 2025242 PMAQI
10th Jul 2025263 PMAQI
10th Jul 2025314 PMAQI
10th Jul 2025315 PMAQI
10th Jul 2025276 PMAQI
10th Jul 2025257 PMAQI
10th Jul 2025308 PMAQI
10th Jul 2025389 PMAQI
10th Jul 20253610 PMAQI
10th Jul 20253811 PMAQI
11th Jul 20253812 AMAQI
11th Jul 2025431 AMAQI
11th Jul 2025502 AMAQI
11th Jul 2025493 AMAQI
15°C10/19°C
11th Jul 2025464 AMAQI
11th Jul 2025475 AMAQI
11th Jul 2025466 AMAQI
11th Jul 2025467 AMAQI
11th Jul 2025468 AMAQI
11th Jul 2025269 AMAQI
11th Jul 20251910 AMAQI
11th Jul 20251811 AMAQI
11th Jul 20251712 PMAQI
11th Jul 2025231 PMAQI
11th Jul 2025332 PMAQI
11th Jul 2025343 PMAQI
11th Jul 2025284 PMAQI
11th Jul 2025265 PMAQI
11th Jul 2025316 PMAQI
11th Jul 2025307 PMAQI
11th Jul 2025348 PMAQI
11th Jul 2025429 PMAQI
11th Jul 20254210 PMAQI
11th Jul 20254211 PMAQI
12th Jul 20254212 AMAQI
12th Jul 2025451 AMAQI
12th Jul 2025482 AMAQI
12th Jul 2025483 AMAQI
16°C11/21°C
12th Jul 2025474 AMAQI
12th Jul 2025445 AMAQI
12th Jul 2025456 AMAQI
12th Jul 2025457 AMAQI
12th Jul 2025458 AMAQI
12th Jul 2025349 AMAQI
12th Jul 20253310 AMAQI
12th Jul 20253411 AMAQI
12th Jul 20253112 PMAQI
12th Jul 2025361 PMAQI
12th Jul 2025352 PMAQI
12th Jul 2025363 PMAQI
12th Jul 2025404 PMAQI
12th Jul 2025365 PMAQI
12th Jul 2025406 PMAQI
12th Jul 2025437 PMAQI
12th Jul 2025448 PMAQI
12th Jul 2025479 PMAQI
12th Jul 20254610 PMAQI
12th Jul 20254911 PMAQI
13th Jul 20255012 AMAQI
13th Jul 2025481 AMAQI
13th Jul 2025492 AMAQI
13th Jul 2025483 AMAQI
18°C11/26°C
13th Jul 2025474 AMAQI
13th Jul 2025465 AMAQI
13th Jul 2025446 AMAQI
13th Jul 2025457 AMAQI
13th Jul 2025468 AMAQI
13th Jul 2025419 AMAQI
13th Jul 20253710 AMAQI
13th Jul 20254211 AMAQI
13th Jul 20254212 PMAQI
13th Jul 2025441 PMAQI
13th Jul 2025402 PMAQI
13th Jul 2025373 PMAQI
13th Jul 2025354 PMAQI
13th Jul 2025385 PMAQI
13th Jul 2025426 PMAQI
13th Jul 2025417 PMAQI
13th Jul 2025438 PMAQI
13th Jul 2025459 PMAQI
13th Jul 20254610 PMAQI
13th Jul 20254611 PMAQI
14th Jul 20254512 AMAQI
14th Jul 2025471 AMAQI
14th Jul 2025482 AMAQI
14th Jul 2025483 AMAQI
20°C11/28°C
14th Jul 2025484 AMAQI
14th Jul 2025465 AMAQI
14th Jul 2025476 AMAQI
14th Jul 2025477 AMAQI
14th Jul 2025478 AMAQI
14th Jul 2025389 AMAQI
14th Jul 20253310 AMAQI
14th Jul 20253411 AMAQI
14th Jul 20254012 PMAQI
14th Jul 2025451 PMAQI
14th Jul 2025432 PMAQI
14th Jul 2025403 PMAQI
14th Jul 2025404 PMAQI
14th Jul 2025375 PMAQI
14th Jul 2025366 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025308 PMAQI
14th Jul 2025379 PMAQI
14th Jul 20253610 PMAQI
14th Jul 20254011 PMAQI
15th Jul 20253812 AMAQI
15th Jul 2025431 AMAQI
15th Jul 2025502 AMAQI
15th Jul 2025473 AMAQI
24°C16/30°C
15th Jul 2025484 AMAQI
15th Jul 2025475 AMAQI
15th Jul 2025486 AMAQI
15th Jul 2025487 AMAQI
15th Jul 2025498 AMAQI
15th Jul 2025299 AMAQI
15th Jul 20252510 AMAQI
15th Jul 20252111 AMAQI
15th Jul 20252112 PMAQI
15th Jul 2025231 PMAQI
15th Jul 2025232 PMAQI
15th Jul 2025303 PMAQI
15th Jul 2025324 PMAQI
15th Jul 2025315 PMAQI
15th Jul 2025306 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025378 PMAQI
15th Jul 2025399 PMAQI
15th Jul 20254110 PMAQI
15th Jul 20254411 PMAQI
16th Jul 20254212 AMAQI
16th Jul 2025451 AMAQI
16th Jul 2025492 AMAQI
16th Jul 2025483 AMAQI
23°C19/32°C
16th Jul 2025464 AMAQI
16th Jul 2025445 AMAQI
16th Jul 2025446 AMAQI
16th Jul 2025447 AMAQI
16th Jul 2025438 AMAQI
16th Jul 2025259 AMAQI
16th Jul 20251910 AMAQI
16th Jul 20252011 AMAQI
16th Jul 20252912 PMAQI
16th Jul 2025391 PMAQI
16th Jul 2025342 PMAQI
16th Jul 2025303 PMAQI
16th Jul 2025294 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025366 PMAQI
16th Jul 2025277 PMAQI
16th Jul 2025318 PMAQI
16th Jul 2025379 PMAQI
16th Jul 20253910 PMAQI
16th Jul 20253811 PMAQI
17th Jul 20254012 AMAQI
17th Jul 2025441 AMAQI
17th Jul 2025482 AMAQI
17th Jul 2025483 AMAQI
23°C21/25°C
17th Jul 2025464 AMAQI
17th Jul 2025445 AMAQI
17th Jul 2025446 AMAQI
17th Jul 2025427 AMAQI
17th Jul 2025428 AMAQI
17th Jul 2025399 AMAQI
17th Jul 20254210 AMAQI
17th Jul 20254311 AMAQI
17th Jul 20254412 PMAQI
17th Jul 2025441 PMAQI
17th Jul 2025472 PMAQI
17th Jul 2025503 PMAQI
17th Jul 2025484 PMAQI
17th Jul 2025405 PMAQI
17th Jul 2025446 PMAQI
17th Jul 2025477 PMAQI
17th Jul 2025508 PMAQI
17th Jul 2025479 PMAQI
17th Jul 20254810 PMAQI
17th Jul 20255011 PMAQI
18th Jul 20254812 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025462 AMAQI
18th Jul 2025463 AMAQI
26°C21/34°C
18th Jul 2025464 AMAQI
18th Jul 2025455 AMAQI
18th Jul 2025446 AMAQI
18th Jul 2025457 AMAQI
18th Jul 2025448 AMAQI
18th Jul 2025429 AMAQI
18th Jul 20253510 AMAQI
18th Jul 20253911 AMAQI
18th Jul 20253812 PMAQI
18th Jul 2025401 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025313 PMAQI
18th Jul 2025274 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025336 PMAQI
18th Jul 2025327 PMAQI
18th Jul 2025378 PMAQI
18th Jul 2025399 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20253911 PMAQI
19th Jul 20254212 AMAQI
19th Jul 2025461 AMAQI
19th Jul 2025472 AMAQI
19th Jul 2025473 AMAQI
25°C22/34°C
19th Jul 2025464 AMAQI
19th Jul 2025455 AMAQI
19th Jul 2025456 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025309 AMAQI
19th Jul 20252310 AMAQI
19th Jul 20252411 AMAQI
19th Jul 20252712 PMAQI
19th Jul 2025261 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025253 PMAQI
19th Jul 2025234 PMAQI
19th Jul 2025285 PMAQI
19th Jul 2025336 PMAQI
19th Jul 2025307 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025421 AMAQI
20th Jul 2025462 AMAQI
20th Jul 2025453 AMAQI
23°C21/24°C
20th Jul 2025444 AMAQI
20th Jul 2025435 AMAQI
20th Jul 2025436 AMAQI
20th Jul 2025437 AMAQI
20th Jul 2025448 AMAQI
20th Jul 2025379 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20253411 AMAQI
20th Jul 20253612 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025312 PMAQI
20th Jul 2025303 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025386 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025398 PMAQI
20th Jul 2025429 PMAQI
20th Jul 20254010 PMAQI
20th Jul 20253911 PMAQI
21st Jul 20253912 AMAQI
21st Jul 2025411 AMAQI
21st Jul 2025432 AMAQI
21st Jul 2025433 AMAQI
25°C21/32°C
21st Jul 2025434 AMAQI
21st Jul 2025425 AMAQI
21st Jul 2025426 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025428 AMAQI
21st Jul 2025349 AMAQI
21st Jul 20252910 AMAQI
21st Jul 20253111 AMAQI
21st Jul 20253712 PMAQI
21st Jul 2025351 PMAQI
21st Jul 2025362 PMAQI
21st Jul 2025393 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025405 PMAQI
21st Jul 2025396 PMAQI
21st Jul 2025387 PMAQI
21st Jul 2025388 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254310 PMAQI
21st Jul 20254411 PMAQI
22nd Jul 20254412 AMAQI
22nd Jul 2025441 AMAQI
22nd Jul 2025442 AMAQI
22nd Jul 2025443 AMAQI
26°C21/33°C
22nd Jul 2025434 AMAQI
22nd Jul 2025465 AMAQI
22nd Jul 2025426 AMAQI
22nd Jul 2025427 AMAQI
22nd Jul 2025428 AMAQI
22nd Jul 2025429 AMAQI
22nd Jul 20254610 AMAQI
22nd Jul 20254611 AMAQI
22nd Jul 20254612 PMAQI
22nd Jul 2025421 PMAQI
22nd Jul 2025422 PMAQI
22nd Jul 2025443 PMAQI
22nd Jul 2025404 PMAQI
22nd Jul 2025345 PMAQI
22nd Jul 2025386 PMAQI
22nd Jul 2025437 PMAQI
22nd Jul 2025448 PMAQI
22nd Jul 2025479 PMAQI
22nd Jul 20254610 PMAQI
22nd Jul 20254611 PMAQI
23rd Jul 20254312 AMAQI
23rd Jul 2025441 AMAQI
23rd Jul 2025452 AMAQI
23rd Jul 2025453 AMAQI
28°C22/36°C
23rd Jul 2025444 AMAQI
23rd Jul 2025445 AMAQI
23rd Jul 2025446 AMAQI
23rd Jul 2025447 AMAQI
23rd Jul 2025448 AMAQI
23rd Jul 2025469 AMAQI
23rd Jul 20253710 AMAQI
23rd Jul 20253511 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025271 PMAQI
23rd Jul 2025322 PMAQI
23rd Jul 2025403 PMAQI
23rd Jul 2025434 PMAQI
23rd Jul 2025405 PMAQI
23rd Jul 2025406 PMAQI
23rd Jul 2025397 PMAQI
23rd Jul 2025418 PMAQI
23rd Jul 2025439 PMAQI
23rd Jul 20254310 PMAQI
23rd Jul 20254511 PMAQI
24th Jul 20254412 AMAQI
24th Jul 2025451 AMAQI
24th Jul 2025452 AMAQI
24th Jul 2025443 AMAQI
27°C21/35°C
24th Jul 2025444 AMAQI
24th Jul 2025425 AMAQI
24th Jul 2025436 AMAQI
24th Jul 2025437 AMAQI
24th Jul 2025438 AMAQI
24th Jul 2025409 AMAQI
24th Jul 20254410 AMAQI
24th Jul 20254811 AMAQI
24th Jul 20254512 PMAQI
24th Jul 2025451 PMAQI
24th Jul 2025462 PMAQI
24th Jul 2025393 PMAQI
24th Jul 2025384 PMAQI
24th Jul 2025395 PMAQI
24th Jul 2025386 PMAQI
24th Jul 2025427 PMAQI
24th Jul 2025438 PMAQI
24th Jul 2025429 PMAQI
24th Jul 20254410 PMAQI
24th Jul 20254211 PMAQI
25th Jul 20254212 AMAQI
25th Jul 2025441 AMAQI
25th Jul 2025462 AMAQI
25th Jul 2025453 AMAQI
28°C22/37°C
25th Jul 2025454 AMAQI
25th Jul 2025465 AMAQI
25th Jul 2025466 AMAQI
25th Jul 2025447 AMAQI
25th Jul 2025458 AMAQI
25th Jul 2025419 AMAQI
25th Jul 20254410 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20255012 PMAQI
25th Jul 2025401 PMAQI
25th Jul 2025362 PMAQI
25th Jul 2025363 PMAQI
25th Jul 2025384 PMAQI
25th Jul 2025425 PMAQI
25th Jul 2025486 PMAQI
25th Jul 2025507 PMAQI
25th Jul 2025468 PMAQI
25th Jul 2025499 PMAQI
25th Jul 20254810 PMAQI
25th Jul 20254811 PMAQI
26th Jul 20254612 AMAQI
26th Jul 2025451 AMAQI
26th Jul 2025452 AMAQI
26th Jul 2025463 AMAQI
27°C21/34°C
26th Jul 2025464 AMAQI
26th Jul 2025455 AMAQI
26th Jul 2025456 AMAQI
26th Jul 2025467 AMAQI
26th Jul 2025458 AMAQI
26th Jul 2025369 AMAQI
26th Jul 20253510 AMAQI
26th Jul 20253211 AMAQI
26th Jul 20253212 PMAQI
26th Jul 2025311 PMAQI
26th Jul 2025362 PMAQI
26th Jul 2025303 PMAQI
26th Jul 2025304 PMAQI
26th Jul 2025325 PMAQI
26th Jul 2025336 PMAQI
26th Jul 2025387 PMAQI
26th Jul 2025428 PMAQI
26th Jul 2025439 PMAQI
26th Jul 20254110 PMAQI
26th Jul 20254411 PMAQI
27th Jul 20254112 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025462 AMAQI
27th Jul 2025463 AMAQI
22°C20/25°C
27th Jul 2025464 AMAQI
27th Jul 2025445 AMAQI
27th Jul 2025446 AMAQI
27th Jul 2025447 AMAQI
27th Jul 2025448 AMAQI
27th Jul 2025349 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252611 AMAQI
27th Jul 20252312 PMAQI
27th Jul 2025261 PMAQI
27th Jul 2025302 PMAQI
27th Jul 2025323 PMAQI
27th Jul 2025244 PMAQI
27th Jul 2025285 PMAQI
27th Jul 2025366 PMAQI
27th Jul 2025337 PMAQI
27th Jul 2025328 PMAQI
27th Jul 2025389 PMAQI
27th Jul 20253910 PMAQI
27th Jul 20254211 PMAQI
28th Jul 20254112 AMAQI
28th Jul 2025431 AMAQI
28th Jul 2025442 AMAQI
28th Jul 2025463 AMAQI
22°C20/25°C
28th Jul 2025444 AMAQI
28th Jul 2025425 AMAQI
28th Jul 2025426 AMAQI
28th Jul 2025427 AMAQI
28th Jul 2025418 AMAQI
28th Jul 2025359 AMAQI
28th Jul 20253310 AMAQI
28th Jul 20253611 AMAQI
28th Jul 20253612 PMAQI
28th Jul 2025361 PMAQI
28th Jul 2025342 PMAQI
28th Jul 2025333 PMAQI
28th Jul 2025314 PMAQI
28th Jul 2025315 PMAQI
28th Jul 2025366 PMAQI
28th Jul 2025347 PMAQI
28th Jul 2025368 PMAQI
28th Jul 2025409 PMAQI
28th Jul 20253910 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253812 AMAQI
29th Jul 2025421 AMAQI
29th Jul 2025442 AMAQI
29th Jul 2025443 AMAQI
21°C19/25°C
29th Jul 2025444 AMAQI
29th Jul 2025435 AMAQI
29th Jul 2025436 AMAQI
29th Jul 2025437 AMAQI
29th Jul 2025428 AMAQI
29th Jul 2025299 AMAQI
29th Jul 20252210 AMAQI
29th Jul 20252011 AMAQI
29th Jul 20252212 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025202 PMAQI
29th Jul 2025243 PMAQI
29th Jul 2025274 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025316 PMAQI
29th Jul 2025417 PMAQI
29th Jul 2025438 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254010 PMAQI
29th Jul 20253511 PMAQI
30th Jul 20253212 AMAQI
30th Jul 2025401 AMAQI
30th Jul 2025442 AMAQI
30th Jul 2025453 AMAQI
22°C20/24°C
30th Jul 2025434 AMAQI
30th Jul 2025425 AMAQI
30th Jul 2025416 AMAQI
30th Jul 2025427 AMAQI
30th Jul 2025418 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20252411 AMAQI
30th Jul 20252412 PMAQI
30th Jul 2025401 PMAQI
30th Jul 2025292 PMAQI
30th Jul 2025223 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025265 PMAQI
30th Jul 2025246 PMAQI
30th Jul 2025257 PMAQI
30th Jul 2025358 PMAQI
30th Jul 2025409 PMAQI
30th Jul 20253510 PMAQI
30th Jul 20253111 PMAQI
31st Jul 20253212 AMAQI
31st Jul 2025361 AMAQI
31st Jul 2025422 AMAQI
31st Jul 2025423 AMAQI
23°C19/29°C
31st Jul 2025424 AMAQI
31st Jul 2025425 AMAQI
31st Jul 2025426 AMAQI
31st Jul 2025427 AMAQI
31st Jul 2025428 AMAQI
31st Jul 2025429 AMAQI
31st Jul 20254210 AMAQI
31st Jul 20252611 AMAQI
31st Jul 20252912 PMAQI
31st Jul 2025301 PMAQI
31st Jul 2025242 PMAQI
31st Jul 2025263 PMAQI
31st Jul 2025284 PMAQI
31st Jul 2025325 PMAQI
31st Jul 2025296 PMAQI
31st Jul 2025287 PMAQI
31st Jul 2025318 PMAQI
31st Jul 2025349 PMAQI
31st Jul 20253610 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20253412 AMAQI
1st Aug 2025371 AMAQI
1st Aug 2025422 AMAQI
1st Aug 2025433 AMAQI
24°C19/30°C
1st Aug 2025434 AMAQI
1st Aug 2025425 AMAQI
1st Aug 2025426 AMAQI
1st Aug 2025437 AMAQI
1st Aug 2025458 AMAQI
1st Aug 2025229 AMAQI
1st Aug 20253510 AMAQI
1st Aug 20254011 AMAQI
1st Aug 20254312 PMAQI
1st Aug 2025411 PMAQI
1st Aug 2025412 PMAQI
1st Aug 2025313 PMAQI
1st Aug 2025284 PMAQI
1st Aug 2025265 PMAQI
1st Aug 2025326 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025339 PMAQI
1st Aug 20253310 PMAQI
1st Aug 20253411 PMAQI
2nd Aug 20253212 AMAQI
2nd Aug 2025381 AMAQI
2nd Aug 2025382 AMAQI
2nd Aug 2025403 AMAQI
25°C20/30°C
2nd Aug 2025404 AMAQI
2nd Aug 2025395 AMAQI
2nd Aug 2025406 AMAQI
2nd Aug 2025397 AMAQI
2nd Aug 2025418 AMAQI
2nd Aug 2025239 AMAQI
2nd Aug 20252310 AMAQI
2nd Aug 20252711 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025241 PMAQI
2nd Aug 2025212 PMAQI
2nd Aug 2025263 PMAQI
2nd Aug 2025364 PMAQI
2nd Aug 2025315 PMAQI
2nd Aug 2025276 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025258 PMAQI
2nd Aug 2025279 PMAQI
2nd Aug 20252910 PMAQI
2nd Aug 20253211 PMAQI
3rd Aug 20252812 AMAQI
3rd Aug 2025341 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025383 AMAQI
24°C20/29°C
3rd Aug 2025364 AMAQI
3rd Aug 2025345 AMAQI
3rd Aug 2025336 AMAQI
3rd Aug 2025347 AMAQI
3rd Aug 2025358 AMAQI
3rd Aug 2025319 AMAQI
3rd Aug 20252710 AMAQI
3rd Aug 20253211 AMAQI
3rd Aug 20253512 PMAQI
3rd Aug 2025381 PMAQI
3rd Aug 2025362 PMAQI
3rd Aug 2025353 PMAQI
3rd Aug 2025304 PMAQI
3rd Aug 2025295 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025287 PMAQI
3rd Aug 2025288 PMAQI
3rd Aug 2025309 PMAQI
3rd Aug 20252810 PMAQI
3rd Aug 20253011 PMAQI
4th Aug 20252812 AMAQI
4th Aug 2025321 AMAQI
4th Aug 2025332 AMAQI
4th Aug 2025373 AMAQI
23°C20/28°C
4th Aug 2025344 AMAQI
4th Aug 2025345 AMAQI
4th Aug 2025366 AMAQI
4th Aug 2025347 AMAQI
4th Aug 2025358 AMAQI
4th Aug 2025299 AMAQI
4th Aug 20253810 AMAQI
4th Aug 20253111 AMAQI
4th Aug 20252512 PMAQI
4th Aug 2025281 PMAQI
4th Aug 2025232 PMAQI
4th Aug 2025293 PMAQI
4th Aug 2025244 PMAQI
4th Aug 2025205 PMAQI
4th Aug 2025276 PMAQI
4th Aug 2025267 PMAQI
4th Aug 2025308 PMAQI
4th Aug 2025319 PMAQI
4th Aug 20253210 PMAQI
4th Aug 20253411 PMAQI
5th Aug 20253512 AMAQI
5th Aug 2025341 AMAQI
5th Aug 2025382 AMAQI
5th Aug 2025343 AMAQI
25°C21/31°C
5th Aug 2025374 AMAQI
5th Aug 2025385 AMAQI
5th Aug 2025346 AMAQI
5th Aug 2025347 AMAQI
5th Aug 2025358 AMAQI
5th Aug 2025189 AMAQI
5th Aug 20252410 AMAQI
5th Aug 20253011 AMAQI
5th Aug 20252312 PMAQI
5th Aug 2025241 PMAQI
5th Aug 2025292 PMAQI
5th Aug 2025253 PMAQI
5th Aug 2025344 PMAQI
5th Aug 2025255 PMAQI
5th Aug 2025206 PMAQI
5th Aug 2025327 PMAQI
5th Aug 2025288 PMAQI
5th Aug 2025329 PMAQI
5th Aug 20253210 PMAQI
5th Aug 20253511 PMAQI
6th Aug 20253712 AMAQI
6th Aug 2025371 AMAQI
6th Aug 2025382 AMAQI
6th Aug 2025373 AMAQI
23°C21/28°C
6th Aug 2025384 AMAQI
6th Aug 2025365 AMAQI
6th Aug 2025356 AMAQI
6th Aug 2025347 AMAQI
6th Aug 2025378 AMAQI
6th Aug 2025319 AMAQI
6th Aug 20252510 AMAQI
6th Aug 20252111 AMAQI
6th Aug 20253012 PMAQI
6th Aug 2025321 PMAQI
6th Aug 2025262 PMAQI
6th Aug 2025303 PMAQI
6th Aug 2025344 PMAQI
6th Aug 2025295 PMAQI
6th Aug 2025286 PMAQI
6th Aug 2025267 PMAQI
6th Aug 2025328 PMAQI
6th Aug 2025339 PMAQI
6th Aug 20253310 PMAQI
6th Aug 20253811 PMAQI
7th Aug 20254012 AMAQI
7th Aug 2025411 AMAQI
7th Aug 2025372 AMAQI
7th Aug 2025373 AMAQI
23°C20/29°C
7th Aug 2025364 AMAQI
7th Aug 2025345 AMAQI
7th Aug 2025346 AMAQI
7th Aug 2025367 AMAQI
7th Aug 2025378 AMAQI
7th Aug 2025369 AMAQI
7th Aug 20253310 AMAQI
7th Aug 20253211 AMAQI
7th Aug 20253012 PMAQI
7th Aug 2025261 PMAQI
7th Aug 2025292 PMAQI
7th Aug 2025273 PMAQI
7th Aug 2025284 PMAQI
7th Aug 2025305 PMAQI
7th Aug 2025196 PMAQI
7th Aug 2025217 PMAQI
7th Aug 2025248 PMAQI
7th Aug 2025299 PMAQI
7th Aug 20252910 PMAQI
7th Aug 20252811 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025351 AMAQI
8th Aug 2025372 AMAQI
--°C/°C
4 AM
11 AM
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
43AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
10 AM - 6 PM
32AQI
9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 43), while the lowest AQI was between 10 AM to 6 PM (Avg. 32).
Night time
Avg. Highest Time
1 AM - 3 AM
43AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM
34AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 3 AM (Avg. 43), while the lowest AQI was between 7 PM to 7 PM (Avg. 34).
2025 Days Vs Air Quality
Koencho, Hokkaido, Japan
2025
97%
212
3%
6
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Good
212 DaysModerate
6 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 219 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
Koencho, 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.
1st January 2025
48AQI
48AQI
2nd January 2025
47AQI
47AQI
3rd January 2025
40AQI
40AQI
4th January 2025
40AQI
40AQI
5th January 2025
46AQI
46AQI
6th January 2025
47AQI
47AQI
7th January 2025
42AQI
42AQI
8th January 2025
38AQI
38AQI
9th January 2025
32AQI
32AQI
10th January 2025
30AQI
30AQI
11th January 2025
31AQI
31AQI
12th January 2025
31AQI
31AQI
13th January 2025
43AQI
43AQI
14th January 2025
50AQI
50AQI
15th January 2025
50AQI
50AQI
16th January 2025
47AQI
47AQI
17th January 2025
40AQI
40AQI
18th January 2025
41AQI
41AQI
19th January 2025
37AQI
37AQI
20th January 2025
49AQI
49AQI
21st January 2025
44AQI
44AQI
22nd January 2025
57AQI
57AQI
23rd January 2025
57AQI
57AQI
24th January 2025
52AQI
52AQI
25th January 2025
40AQI
40AQI
26th January 2025
35AQI
35AQI
27th January 2025
33AQI
33AQI
28th January 2025
30AQI
30AQI
29th January 2025
37AQI
37AQI
30th January 2025
29AQI
29AQI
31st January 2025
34AQI
34AQI
1st February 2025
29AQI
29AQI
2nd February 2025
38AQI
38AQI
3rd February 2025
41AQI
41AQI
4th February 2025
31AQI
31AQI
5th February 2025
40AQI
40AQI
6th February 2025
35AQI
35AQI
7th February 2025
37AQI
37AQI
8th February 2025
32AQI
32AQI
9th February 2025
29AQI
29AQI
10th February 2025
31AQI
31AQI
11th February 2025
29AQI
29AQI
12th February 2025
43AQI
43AQI
13th February 2025
50AQI
50AQI
14th February 2025
43AQI
43AQI
15th February 2025
56AQI
56AQI
16th February 2025
47AQI
47AQI
17th February 2025
39AQI
39AQI
18th February 2025
37AQI
37AQI
19th February 2025
32AQI
32AQI
20th February 2025
31AQI
31AQI
21st February 2025
32AQI
32AQI
22nd February 2025
28AQI
28AQI
23rd February 2025
29AQI
29AQI
24th February 2025
31AQI
31AQI
25th February 2025
36AQI
36AQI
26th February 2025
44AQI
44AQI
27th February 2025
40AQI
40AQI
28th February 2025
62AQI
62AQI
1st March 2025
48AQI
48AQI
2nd March 2025
43AQI
43AQI
3rd March 2025
36AQI
36AQI
4th March 2025
34AQI
34AQI
5th March 2025
37AQI
37AQI
6th March 2025
31AQI
31AQI
7th March 2025
34AQI
34AQI
8th March 2025
29AQI
29AQI
9th March 2025
33AQI
33AQI
10th March 2025
35AQI
35AQI
11th March 2025
44AQI
44AQI
12th March 2025
55AQI
55AQI
13th March 2025
41AQI
41AQI
14th March 2025
31AQI
31AQI
15th March 2025
29AQI
29AQI
16th March 2025
27AQI
27AQI
17th March 2025
21AQI
21AQI
18th March 2025
25AQI
25AQI
19th March 2025
29AQI
29AQI
20th March 2025
39AQI
39AQI
21st March 2025
44AQI
44AQI
22nd March 2025
39AQI
39AQI
23rd March 2025
31AQI
31AQI
24th March 2025
33AQI
33AQI
25th March 2025
42AQI
42AQI
26th March 2025
33AQI
33AQI
27th March 2025
33AQI
33AQI
28th March 2025
28AQI
28AQI
29th March 2025
27AQI
27AQI
30th March 2025
29AQI
29AQI
31st March 2025
28AQI
28AQI
1st April 2025
38AQI
38AQI
2nd April 2025
32AQI
32AQI
3rd April 2025
28AQI
28AQI
4th April 2025
29AQI
29AQI
5th April 2025
34AQI
34AQI
6th April 2025
38AQI
38AQI
7th April 2025
31AQI
31AQI
8th April 2025
32AQI
32AQI
9th April 2025
33AQI
33AQI
10th April 2025
46AQI
46AQI
11th April 2025
47AQI
47AQI
12th April 2025
42AQI
42AQI
13th April 2025
47AQI
47AQI
14th April 2025
32AQI
32AQI
15th April 2025
28AQI
28AQI
16th April 2025
20AQI
20AQI
17th April 2025
26AQI
26AQI
18th April 2025
23AQI
23AQI
19th April 2025
25AQI
25AQI
20th April 2025
23AQI
23AQI
21st April 2025
31AQI
31AQI
22nd April 2025
26AQI
26AQI
23rd April 2025
30AQI
30AQI
24th April 2025
28AQI
28AQI
25th April 2025
24AQI
24AQI
26th April 2025
35AQI
35AQI
27th April 2025
25AQI
25AQI
28th April 2025
23AQI
23AQI
29th April 2025
20AQI
20AQI
30th April 2025
21AQI
21AQI
1st May 2025
27AQI
27AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
26AQI
26AQI
4th May 2025
35AQI
35AQI
5th May 2025
30AQI
30AQI
6th May 2025
35AQI
35AQI
7th May 2025
33AQI
33AQI
8th May 2025
36AQI
36AQI
9th May 2025
38AQI
38AQI
10th May 2025
30AQI
30AQI
11th May 2025
30AQI
30AQI
12th May 2025
37AQI
37AQI
13th May 2025
39AQI
39AQI
14th May 2025
44AQI
44AQI
15th May 2025
43AQI
43AQI
16th May 2025
48AQI
48AQI
17th May 2025
43AQI
43AQI
18th May 2025
35AQI
35AQI
19th May 2025
42AQI
42AQI
20th May 2025
40AQI
40AQI
21st May 2025
44AQI
44AQI
22nd May 2025
39AQI
39AQI
23rd May 2025
35AQI
35AQI
24th May 2025
34AQI
34AQI
25th May 2025
28AQI
28AQI
26th May 2025
29AQI
29AQI
27th May 2025
31AQI
31AQI
28th May 2025
35AQI
35AQI
29th May 2025
39AQI
39AQI
30th May 2025
41AQI
41AQI
31st May 2025
35AQI
35AQI
1st June 2025
29AQI
29AQI
2nd June 2025
30AQI
30AQI
3rd June 2025
32AQI
32AQI
4th June 2025
29AQI
29AQI
5th June 2025
27AQI
27AQI
6th June 2025
32AQI
32AQI
7th June 2025
42AQI
42AQI
8th June 2025
46AQI
46AQI
9th June 2025
38AQI
38AQI
10th June 2025
47AQI
47AQI
11th June 2025
39AQI
39AQI
12th June 2025
33AQI
33AQI
13th June 2025
33AQI
33AQI
14th June 2025
36AQI
36AQI
15th June 2025
30AQI
30AQI
16th June 2025
36AQI
36AQI
17th June 2025
34AQI
34AQI
18th June 2025
42AQI
42AQI
19th June 2025
41AQI
41AQI
20th June 2025
47AQI
47AQI
21st June 2025
42AQI
42AQI
22nd June 2025
43AQI
43AQI
23rd June 2025
41AQI
41AQI
24th June 2025
42AQI
42AQI
25th June 2025
46AQI
46AQI
26th June 2025
45AQI
45AQI
27th June 2025
42AQI
42AQI
28th June 2025
40AQI
40AQI
29th June 2025
44AQI
44AQI
30th June 2025
47AQI
47AQI
1st July 2025
47AQI
47AQI
2nd July 2025
48AQI
48AQI
3rd July 2025
41AQI
41AQI
4th July 2025
46AQI
46AQI
5th July 2025
45AQI
45AQI
6th July 2025
44AQI
44AQI
7th July 2025
48AQI
48AQI
8th July 2025
44AQI
44AQI
9th July 2025
39AQI
39AQI
10th July 2025
37AQI
37AQI
11th July 2025
37AQI
37AQI
12th July 2025
42AQI
42AQI
13th July 2025
44AQI
44AQI
14th July 2025
41AQI
41AQI
15th July 2025
37AQI
37AQI
16th July 2025
37AQI
37AQI
17th July 2025
45AQI
45AQI
18th July 2025
40AQI
40AQI
19th July 2025
36AQI
36AQI
20th July 2025
38AQI
38AQI
21st July 2025
40AQI
40AQI
22nd July 2025
43AQI
43AQI
23rd July 2025
41AQI
41AQI
24th July 2025
43AQI
43AQI
25th July 2025
45AQI
45AQI
26th July 2025
40AQI
40AQI
27th July 2025
37AQI
37AQI
28th July 2025
38AQI
38AQI
29th July 2025
35AQI
35AQI
30th July 2025
34AQI
34AQI
31st July 2025
35AQI
35AQI
1st August 2025
36AQI
36AQI
2nd August 2025
32AQI
32AQI
3rd August 2025
33AQI
33AQI
4th August 2025
30AQI
30AQI
5th August 2025
31AQI
31AQI
6th August 2025
33AQI
33AQI
41AQI
38AQI
34AQI
31AQI
36AQI
39AQI
41AQI
33AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
28
3
26
2
30
1
30
31
30
31
6
212
6
Highest AQI recorded in
January41AQI
Lowest AQI recorded in
April31AQI
202429AQI
29
2
26
3
30
1
27
3
31
29
1
23
8
31
30
31
30
29
2
346
20
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
September20AQI
202331AQI
23
8
24
4
24
7
23
7
29
2
29
1
29
2
31
30
31
27
31
331
31
Highest AQI recorded in
February41AQI
Lowest AQI recorded in
September21AQI
202227AQI
29
1
20
2
31
25
5
28
3
30
24
1
28
31
29
1
30
1
306
13
Highest AQI recorded in
November34AQI
Lowest AQI recorded in
August13AQI
202129AQI
18
13
24
3
1
28
1
21
31
30
24
6
27
1
28
31
29
1
28
3
319
28
1
Highest AQI recorded in
January43AQI
Lowest AQI recorded in
May20AQI
202025AQI
13
21
18
28
2
31
31
9
1
20
28
3
199
6
Highest AQI recorded in
December36AQI
Lowest AQI recorded in
November19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
37AQILeast Polluted Year Recorded
2020(Avg.)
25AQIKoencho's annual 2025 AQI (37) shows an average percentage change of 32.4% (worsened AQI) compared to previous years: 2020 (25), 2021 (29), 2022 (27), 2023 (31), 2024 (29).
