Kokubo, Kofu, Yamanashi, 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
Kokubo, Kofu, Yamanashi, Japan
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
5th Aug 2024
126AQILowest AQI recorded on
12th Aug 2026
21AQISame Day Analysis (14th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 22 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Kokubo, Kofu, Yamanashi, Japan
AQI
Day
Night
.
4 AM14th Aug 2026
6 PM
3 AM15th Aug 2026
Day time
Avg. Highest Time
5AM14th Aug
29AQI
Avg. Lowest Time
4PM14th Aug
17AQI
Night time
Avg. Highest Time
11PM14th Aug
25AQI
Avg. Lowest Time
8PM14th Aug
17AQI
In the last 24 hours,
Kokubo's AQI reached its highest point of 29 at 5 AM during the Day, while the lowest point, 17, was recorded at 8 PM during the Night between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Kokubo, Kofu, Yamanashi, Japan
JulAug
17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th
Day
Night
17th Jul 2026294 AMAQI
17th Jul 2026315 AMAQI
17th Jul 2026336 AMAQI
17th Jul 2026587 AMAQI
17th Jul 2026608 AMAQI
17th Jul 2026519 AMAQI
17th Jul 20265410 AMAQI
17th Jul 20266811 AMAQI
17th Jul 20267812 PMAQI
17th Jul 2026761 PMAQI
17th Jul 2026782 PMAQI
17th Jul 2026803 PMAQI
17th Jul 2026764 PMAQI
17th Jul 2026705 PMAQI
17th Jul 2026736 PMAQI
17th Jul 2026717 PMAQI
17th Jul 2026638 PMAQI
17th Jul 2026599 PMAQI
17th Jul 20265910 PMAQI
17th Jul 20265511 PMAQI
18th Jul 20265412 AMAQI
18th Jul 2026511 AMAQI
18th Jul 2026482 AMAQI
18th Jul 2026483 AMAQI
24°C18/29°C
18th Jul 2026444 AMAQI
18th Jul 2026385 AMAQI
18th Jul 2026316 AMAQI
18th Jul 2026147 AMAQI
18th Jul 2026138 AMAQI
18th Jul 2026169 AMAQI
18th Jul 20262310 AMAQI
18th Jul 20262311 AMAQI
18th Jul 20262512 PMAQI
18th Jul 2026481 PMAQI
18th Jul 2026902 PMAQI
18th Jul 2026733 PMAQI
18th Jul 2026694 PMAQI
18th Jul 2026785 PMAQI
18th Jul 2026746 PMAQI
18th Jul 2026467 PMAQI
18th Jul 2026258 PMAQI
18th Jul 2026179 PMAQI
18th Jul 20261210 PMAQI
18th Jul 20261411 PMAQI
19th Jul 20261212 AMAQI
19th Jul 2026131 AMAQI
19th Jul 2026152 AMAQI
19th Jul 2026173 AMAQI
24°C21/27°C
19th Jul 2026154 AMAQI
19th Jul 2026185 AMAQI
19th Jul 2026166 AMAQI
19th Jul 2026127 AMAQI
19th Jul 2026138 AMAQI
19th Jul 2026159 AMAQI
19th Jul 20261910 AMAQI
19th Jul 20262711 AMAQI
19th Jul 20265412 PMAQI
19th Jul 2026731 PMAQI
19th Jul 20261152 PMAQI
19th Jul 2026833 PMAQI
19th Jul 2026684 PMAQI
19th Jul 2026545 PMAQI
19th Jul 2026646 PMAQI
19th Jul 2026497 PMAQI
19th Jul 2026278 PMAQI
19th Jul 2026299 PMAQI
19th Jul 20262910 PMAQI
19th Jul 20262911 PMAQI
20th Jul 20262912 AMAQI
20th Jul 2026291 AMAQI
20th Jul 2026362 AMAQI
20th Jul 2026423 AMAQI
24°C19/31°C
20th Jul 2026424 AMAQI
20th Jul 2026465 AMAQI
20th Jul 2026446 AMAQI
20th Jul 2026367 AMAQI
20th Jul 2026368 AMAQI
20th Jul 2026409 AMAQI
20th Jul 20263610 AMAQI
20th Jul 20263611 AMAQI
20th Jul 20264812 PMAQI
20th Jul 2026531 PMAQI
20th Jul 2026522 PMAQI
20th Jul 2026523 PMAQI
20th Jul 2026524 PMAQI
20th Jul 2026535 PMAQI
20th Jul 2026546 PMAQI
20th Jul 2026597 PMAQI
20th Jul 2026558 PMAQI
20th Jul 2026589 PMAQI
20th Jul 20265610 PMAQI
20th Jul 20265611 PMAQI
21st Jul 20264012 AMAQI
21st Jul 2026231 AMAQI
21st Jul 2026202 AMAQI
21st Jul 2026193 AMAQI
25°C18/31°C
21st Jul 2026204 AMAQI
21st Jul 2026195 AMAQI
21st Jul 2026246 AMAQI
21st Jul 2026277 AMAQI
21st Jul 2026298 AMAQI
21st Jul 2026249 AMAQI
21st Jul 20262810 AMAQI
21st Jul 20263311 AMAQI
21st Jul 2026681 PMAQI
21st Jul 2026642 PMAQI
21st Jul 2026803 PMAQI
21st Jul 2026954 PMAQI
21st Jul 2026935 PMAQI
21st Jul 2026786 PMAQI
21st Jul 2026887 PMAQI
21st Jul 2026508 PMAQI
21st Jul 2026449 PMAQI
21st Jul 20264210 PMAQI
21st Jul 20264011 PMAQI
22nd Jul 20264412 AMAQI
22nd Jul 2026441 AMAQI
22nd Jul 2026302 AMAQI
22nd Jul 2026163 AMAQI
25°C18/34°C
22nd Jul 2026184 AMAQI
22nd Jul 2026535 AMAQI
22nd Jul 2026526 AMAQI
22nd Jul 2026467 AMAQI
22nd Jul 2026518 AMAQI
22nd Jul 2026579 AMAQI
22nd Jul 20265610 AMAQI
22nd Jul 20266311 AMAQI
22nd Jul 20267412 PMAQI
22nd Jul 2026781 PMAQI
22nd Jul 2026802 PMAQI
22nd Jul 2026803 PMAQI
22nd Jul 2026804 PMAQI
22nd Jul 2026815 PMAQI
22nd Jul 2026786 PMAQI
22nd Jul 2026697 PMAQI
22nd Jul 2026508 PMAQI
22nd Jul 2026589 PMAQI
22nd Jul 20266710 PMAQI
22nd Jul 20266011 PMAQI
23rd Jul 20264812 AMAQI
23rd Jul 2026491 AMAQI
23rd Jul 2026722 AMAQI
23rd Jul 2026503 AMAQI
26°C18/36°C
23rd Jul 2026664 AMAQI
23rd Jul 2026665 AMAQI
23rd Jul 2026786 AMAQI
23rd Jul 2026707 AMAQI
23rd Jul 2026678 AMAQI
23rd Jul 2026669 AMAQI
23rd Jul 20266910 AMAQI
23rd Jul 20268811 AMAQI
23rd Jul 202611112 PMAQI
23rd Jul 20261481 PMAQI
23rd Jul 20261262 PMAQI
23rd Jul 20261063 PMAQI
23rd Jul 20261184 PMAQI
23rd Jul 20261155 PMAQI
23rd Jul 20261166 PMAQI
23rd Jul 2026857 PMAQI
23rd Jul 2026838 PMAQI
23rd Jul 2026569 PMAQI
23rd Jul 20263010 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20264012 AMAQI
24th Jul 2026461 AMAQI
24th Jul 2026412 AMAQI
24th Jul 2026363 AMAQI
26°C18/36°C
24th Jul 2026544 AMAQI
24th Jul 2026595 AMAQI
24th Jul 2026726 AMAQI
24th Jul 2026547 AMAQI
24th Jul 2026678 AMAQI
24th Jul 2026689 AMAQI
24th Jul 20268310 AMAQI
24th Jul 20267811 AMAQI
24th Jul 202613012 PMAQI
24th Jul 20261501 PMAQI
24th Jul 20261452 PMAQI
24th Jul 20261213 PMAQI
24th Jul 20261054 PMAQI
24th Jul 20261085 PMAQI
24th Jul 2026756 PMAQI
24th Jul 2026667 PMAQI
24th Jul 2026668 PMAQI
24th Jul 2026399 PMAQI
24th Jul 20264210 PMAQI
24th Jul 20264711 PMAQI
25th Jul 20264512 AMAQI
25th Jul 2026521 AMAQI
25th Jul 2026542 AMAQI
25th Jul 2026413 AMAQI
24°C18/33°C
25th Jul 2026384 AMAQI
25th Jul 2026575 AMAQI
25th Jul 2026746 AMAQI
25th Jul 2026707 AMAQI
25th Jul 2026608 AMAQI
25th Jul 2026329 AMAQI
25th Jul 20265110 AMAQI
25th Jul 20267611 AMAQI
25th Jul 202614812 PMAQI
25th Jul 20261261 PMAQI
25th Jul 20261042 PMAQI
25th Jul 2026823 PMAQI
25th Jul 2026674 PMAQI
25th Jul 2026735 PMAQI
25th Jul 2026496 PMAQI
25th Jul 2026637 PMAQI
25th Jul 2026878 PMAQI
25th Jul 2026889 PMAQI
25th Jul 20268610 PMAQI
25th Jul 20268711 PMAQI
26th Jul 20269012 AMAQI
26th Jul 2026901 AMAQI
26th Jul 2026882 AMAQI
26th Jul 2026893 AMAQI
24°C17/34°C
26th Jul 2026114 AMAQI
26th Jul 2026145 AMAQI
26th Jul 2026236 AMAQI
26th Jul 2026147 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20264010 AMAQI
26th Jul 20266411 AMAQI
26th Jul 20268312 PMAQI
26th Jul 20261241 PMAQI
26th Jul 20261182 PMAQI
26th Jul 2026903 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026125 PMAQI
26th Jul 2026176 PMAQI
26th Jul 2026127 PMAQI
26th Jul 2026188 PMAQI
26th Jul 2026179 PMAQI
26th Jul 20261410 PMAQI
26th Jul 20261411 PMAQI
27th Jul 20261712 AMAQI
27th Jul 2026171 AMAQI
27th Jul 2026142 AMAQI
27th Jul 2026123 AMAQI
23°C17/30°C
27th Jul 2026104 AMAQI
27th Jul 2026215 AMAQI
27th Jul 2026166 AMAQI
27th Jul 2026147 AMAQI
27th Jul 2026218 AMAQI
27th Jul 2026239 AMAQI
27th Jul 20262710 AMAQI
27th Jul 20264011 AMAQI
27th Jul 20265412 PMAQI
27th Jul 2026531 PMAQI
27th Jul 2026552 PMAQI
27th Jul 2026543 PMAQI
27th Jul 2026494 PMAQI
27th Jul 2026505 PMAQI
27th Jul 2026466 PMAQI
27th Jul 2026487 PMAQI
27th Jul 2026408 PMAQI
27th Jul 2026409 PMAQI
27th Jul 20264210 PMAQI
27th Jul 20264011 PMAQI
28th Jul 20264012 AMAQI
28th Jul 2026421 AMAQI
28th Jul 2026422 AMAQI
28th Jul 2026463 AMAQI
22°C16/29°C
28th Jul 2026404 AMAQI
28th Jul 2026405 AMAQI
28th Jul 2026336 AMAQI
28th Jul 2026337 AMAQI
28th Jul 2026318 AMAQI
28th Jul 2026319 AMAQI
28th Jul 20262910 AMAQI
28th Jul 20263611 AMAQI
28th Jul 20264012 PMAQI
28th Jul 2026381 PMAQI
28th Jul 2026502 PMAQI
28th Jul 2026503 PMAQI
28th Jul 2026514 PMAQI
28th Jul 2026445 PMAQI
28th Jul 2026426 PMAQI
28th Jul 2026427 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026369 PMAQI
28th Jul 20263310 PMAQI
28th Jul 20263311 PMAQI
29th Jul 20262912 AMAQI
29th Jul 2026311 AMAQI
29th Jul 2026292 AMAQI
29th Jul 2026293 AMAQI
22°C16/29°C
29th Jul 2026274 AMAQI
29th Jul 2026295 AMAQI
29th Jul 2026256 AMAQI
29th Jul 2026257 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262310 AMAQI
29th Jul 20263611 AMAQI
29th Jul 20264412 PMAQI
29th Jul 2026441 PMAQI
29th Jul 2026422 PMAQI
29th Jul 2026403 PMAQI
29th Jul 2026364 PMAQI
29th Jul 2026335 PMAQI
29th Jul 2026316 PMAQI
29th Jul 2026317 PMAQI
29th Jul 2026318 PMAQI
29th Jul 2026339 PMAQI
29th Jul 20263310 PMAQI
29th Jul 20263311 PMAQI
30th Jul 20263312 AMAQI
30th Jul 2026341 AMAQI
30th Jul 2026402 AMAQI
30th Jul 2026383 AMAQI
22°C14/33°C
30th Jul 2026334 AMAQI
30th Jul 2026365 AMAQI
30th Jul 2026336 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026298 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20263310 AMAQI
30th Jul 20263811 AMAQI
30th Jul 20264212 PMAQI
30th Jul 2026381 PMAQI
30th Jul 2026422 PMAQI
30th Jul 2026423 PMAQI
30th Jul 2026404 PMAQI
30th Jul 2026425 PMAQI
30th Jul 2026446 PMAQI
30th Jul 2026447 PMAQI
30th Jul 2026498 PMAQI
30th Jul 2026569 PMAQI
30th Jul 20265510 PMAQI
30th Jul 20263011 PMAQI
31st Jul 20262812 AMAQI
31st Jul 2026241 AMAQI
31st Jul 2026202 AMAQI
31st Jul 2026183 AMAQI
24°C16/35°C
31st Jul 2026154 AMAQI
31st Jul 2026135 AMAQI
31st Jul 2026156 AMAQI
31st Jul 2026167 AMAQI
31st Jul 2026208 AMAQI
31st Jul 2026319 AMAQI
31st Jul 20262110 AMAQI
31st Jul 20265211 AMAQI
31st Jul 20267312 PMAQI
31st Jul 2026761 PMAQI
31st Jul 20261022 PMAQI
31st Jul 2026923 PMAQI
31st Jul 2026744 PMAQI
31st Jul 2026945 PMAQI
31st Jul 2026926 PMAQI
31st Jul 2026587 PMAQI
31st Jul 2026468 PMAQI
31st Jul 2026329 PMAQI
31st Jul 20263010 PMAQI
31st Jul 20263311 PMAQI
1st Aug 20263112 AMAQI
1st Aug 2026241 AMAQI
1st Aug 2026242 AMAQI
1st Aug 2026443 AMAQI
24°C17/34°C
1st Aug 2026534 AMAQI
1st Aug 2026425 AMAQI
1st Aug 2026296 AMAQI
1st Aug 2026507 AMAQI
1st Aug 2026538 AMAQI
1st Aug 2026339 AMAQI
1st Aug 20266910 AMAQI
1st Aug 202611011 AMAQI
1st Aug 202612212 PMAQI
1st Aug 2026741 PMAQI
1st Aug 20261262 PMAQI
1st Aug 20261083 PMAQI
1st Aug 20261004 PMAQI
1st Aug 2026845 PMAQI
1st Aug 2026646 PMAQI
1st Aug 2026557 PMAQI
1st Aug 2026648 PMAQI
1st Aug 2026359 PMAQI
1st Aug 20263410 PMAQI
1st Aug 20263211 PMAQI
2nd Aug 20263012 AMAQI
2nd Aug 2026441 AMAQI
2nd Aug 2026292 AMAQI
2nd Aug 2026313 AMAQI
24°C17/34°C
2nd Aug 2026294 AMAQI
2nd Aug 2026235 AMAQI
2nd Aug 2026186 AMAQI
2nd Aug 2026207 AMAQI
2nd Aug 2026368 AMAQI
2nd Aug 2026249 AMAQI
2nd Aug 20263410 AMAQI
2nd Aug 20266311 AMAQI
2nd Aug 20268512 PMAQI
2nd Aug 20261161 PMAQI
2nd Aug 20261082 PMAQI
2nd Aug 20261063 PMAQI
2nd Aug 2026894 PMAQI
2nd Aug 2026745 PMAQI
2nd Aug 2026546 PMAQI
2nd Aug 2026467 PMAQI
2nd Aug 2026278 PMAQI
2nd Aug 2026279 PMAQI
2nd Aug 20262410 PMAQI
2nd Aug 20262611 PMAQI
3rd Aug 20261712 AMAQI
3rd Aug 2026211 AMAQI
3rd Aug 2026212 AMAQI
3rd Aug 2026183 AMAQI
24°C18/32°C
3rd Aug 2026154 AMAQI
3rd Aug 2026175 AMAQI
3rd Aug 2026146 AMAQI
3rd Aug 2026177 AMAQI
3rd Aug 2026178 AMAQI
3rd Aug 202689 AMAQI
3rd Aug 2026810 AMAQI
3rd Aug 20261011 AMAQI
3rd Aug 20262912 PMAQI
3rd Aug 2026501 PMAQI
3rd Aug 2026762 PMAQI
3rd Aug 2026683 PMAQI
3rd Aug 2026534 PMAQI
3rd Aug 2026405 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026127 PMAQI
3rd Aug 2026128 PMAQI
3rd Aug 2026129 PMAQI
3rd Aug 20261210 PMAQI
3rd Aug 20261211 PMAQI
4th Aug 20261212 AMAQI
4th Aug 2026121 AMAQI
4th Aug 2026122 AMAQI
4th Aug 2026123 AMAQI
24°C22/28°C
4th Aug 2026124 AMAQI
4th Aug 2026125 AMAQI
4th Aug 2026126 AMAQI
4th Aug 2026127 AMAQI
4th Aug 2026128 AMAQI
4th Aug 2026129 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20265611 AMAQI
4th Aug 20269012 PMAQI
4th Aug 2026841 PMAQI
4th Aug 2026622 PMAQI
4th Aug 2026493 PMAQI
4th Aug 2026364 PMAQI
4th Aug 2026425 PMAQI
4th Aug 2026406 PMAQI
4th Aug 2026467 PMAQI
4th Aug 2026448 PMAQI
4th Aug 2026409 PMAQI
4th Aug 20264410 PMAQI
4th Aug 20264211 PMAQI
5th Aug 20264212 AMAQI
5th Aug 2026361 AMAQI
5th Aug 2026422 AMAQI
5th Aug 2026423 AMAQI
23°C14/29°C
5th Aug 2026404 AMAQI
5th Aug 2026405 AMAQI
5th Aug 2026406 AMAQI
5th Aug 2026407 AMAQI
5th Aug 2026408 AMAQI
5th Aug 2026389 AMAQI
5th Aug 20264410 AMAQI
5th Aug 20264611 AMAQI
5th Aug 20264412 PMAQI
5th Aug 2026421 PMAQI
5th Aug 2026402 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026364 PMAQI
5th Aug 2026365 PMAQI
5th Aug 2026336 PMAQI
5th Aug 2026407 PMAQI
5th Aug 2026448 PMAQI
5th Aug 2026449 PMAQI
5th Aug 20264410 PMAQI
5th Aug 20264411 PMAQI
6th Aug 20264612 AMAQI
6th Aug 2026441 AMAQI
6th Aug 2026482 AMAQI
6th Aug 2026443 AMAQI
22°C13/31°C
6th Aug 2026514 AMAQI
6th Aug 2026465 AMAQI
6th Aug 2026466 AMAQI
6th Aug 2026467 AMAQI
6th Aug 2026468 AMAQI
6th Aug 2026429 AMAQI
6th Aug 20264010 AMAQI
6th Aug 20264211 AMAQI
6th Aug 20264412 PMAQI
6th Aug 2026461 PMAQI
6th Aug 2026482 PMAQI
6th Aug 2026423 PMAQI
6th Aug 2026444 PMAQI
6th Aug 2026445 PMAQI
6th Aug 2026386 PMAQI
6th Aug 2026487 PMAQI
6th Aug 2026428 PMAQI
6th Aug 2026459 PMAQI
6th Aug 20264610 PMAQI
6th Aug 20264611 PMAQI
7th Aug 20264412 AMAQI
7th Aug 2026421 AMAQI
7th Aug 2026422 AMAQI
7th Aug 2026363 AMAQI
23°C16/31°C
7th Aug 2026364 AMAQI
7th Aug 2026365 AMAQI
7th Aug 2026366 AMAQI
7th Aug 2026367 AMAQI
7th Aug 2026368 AMAQI
7th Aug 2026389 AMAQI
7th Aug 20263610 AMAQI
7th Aug 20264211 AMAQI
7th Aug 20263812 PMAQI
7th Aug 2026471 PMAQI
7th Aug 2026332 PMAQI
7th Aug 2026343 PMAQI
7th Aug 2026334 PMAQI
7th Aug 2026315 PMAQI
7th Aug 2026346 PMAQI
7th Aug 2026367 PMAQI
7th Aug 2026368 PMAQI
7th Aug 2026339 PMAQI
7th Aug 20263410 PMAQI
7th Aug 20263611 PMAQI
8th Aug 20263812 AMAQI
8th Aug 2026381 AMAQI
8th Aug 2026362 AMAQI
8th Aug 2026383 AMAQI
23°C16/31°C
8th Aug 2026404 AMAQI
8th Aug 2026405 AMAQI
8th Aug 2026406 AMAQI
8th Aug 2026407 AMAQI
8th Aug 2026298 AMAQI
8th Aug 2026339 AMAQI
8th Aug 20263110 AMAQI
8th Aug 20264011 AMAQI
8th Aug 20264212 PMAQI
8th Aug 2026481 PMAQI
8th Aug 2026502 PMAQI
8th Aug 2026443 PMAQI
8th Aug 2026484 PMAQI
8th Aug 2026445 PMAQI
8th Aug 2026476 PMAQI
8th Aug 2026457 PMAQI
8th Aug 2026428 PMAQI
8th Aug 2026429 PMAQI
8th Aug 20264210 PMAQI
8th Aug 20264211 PMAQI
9th Aug 20264012 AMAQI
9th Aug 2026421 AMAQI
9th Aug 2026402 AMAQI
9th Aug 2026383 AMAQI
23°C16/31°C
9th Aug 2026404 AMAQI
9th Aug 2026385 AMAQI
9th Aug 2026386 AMAQI
9th Aug 2026337 AMAQI
9th Aug 2026318 AMAQI
9th Aug 2026279 AMAQI
9th Aug 20262910 AMAQI
9th Aug 20263111 AMAQI
9th Aug 20263612 PMAQI
9th Aug 2026421 PMAQI
9th Aug 2026362 PMAQI
9th Aug 2026383 PMAQI
9th Aug 2026364 PMAQI
9th Aug 2026335 PMAQI
9th Aug 2026406 PMAQI
9th Aug 2026427 PMAQI
9th Aug 2026408 PMAQI
9th Aug 2026409 PMAQI
9th Aug 20264410 PMAQI
9th Aug 20264211 PMAQI
10th Aug 20264012 AMAQI
10th Aug 2026361 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026343 AMAQI
22°C16/29°C
10th Aug 2026314 AMAQI
10th Aug 2026315 AMAQI
10th Aug 2026336 AMAQI
10th Aug 2026297 AMAQI
10th Aug 2026278 AMAQI
10th Aug 2026279 AMAQI
10th Aug 20262910 AMAQI
10th Aug 20262711 AMAQI
10th Aug 20262912 PMAQI
10th Aug 2026291 PMAQI
10th Aug 2026272 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026314 PMAQI
10th Aug 2026315 PMAQI
10th Aug 2026336 PMAQI
10th Aug 2026407 PMAQI
10th Aug 2026408 PMAQI
10th Aug 2026429 PMAQI
10th Aug 20264410 PMAQI
10th Aug 20264411 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026421 AMAQI
11th Aug 2026382 AMAQI
11th Aug 2026403 AMAQI
22°C15/31°C
11th Aug 2026364 AMAQI
11th Aug 2026335 AMAQI
11th Aug 2026316 AMAQI
11th Aug 2026317 AMAQI
11th Aug 2026278 AMAQI
11th Aug 2026279 AMAQI
11th Aug 20262710 AMAQI
11th Aug 20263411 AMAQI
11th Aug 20264012 PMAQI
11th Aug 2026361 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026313 PMAQI
11th Aug 2026334 PMAQI
11th Aug 2026315 PMAQI
11th Aug 2026296 PMAQI
11th Aug 2026297 PMAQI
11th Aug 2026278 PMAQI
11th Aug 2026279 PMAQI
11th Aug 20262510 PMAQI
11th Aug 20262911 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026191 AMAQI
12th Aug 2026212 AMAQI
12th Aug 2026173 AMAQI
20°C14/27°C
12th Aug 2026174 AMAQI
12th Aug 2026195 AMAQI
12th Aug 2026196 AMAQI
12th Aug 2026197 AMAQI
12th Aug 2026178 AMAQI
12th Aug 2026169 AMAQI
12th Aug 20261710 AMAQI
12th Aug 20261711 AMAQI
12th Aug 20261712 PMAQI
12th Aug 2026171 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026233 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026235 PMAQI
12th Aug 2026256 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026258 PMAQI
12th Aug 2026279 PMAQI
12th Aug 20262510 PMAQI
12th Aug 20262511 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026233 AMAQI
19°C14/24°C
13th Aug 2026254 AMAQI
13th Aug 2026255 AMAQI
13th Aug 2026216 AMAQI
13th Aug 2026217 AMAQI
13th Aug 2026218 AMAQI
13th Aug 2026219 AMAQI
13th Aug 20262310 AMAQI
13th Aug 20263211 AMAQI
13th Aug 20263812 PMAQI
13th Aug 2026381 PMAQI
13th Aug 2026382 PMAQI
13th Aug 2026333 PMAQI
13th Aug 2026334 PMAQI
13th Aug 2026385 PMAQI
13th Aug 2026316 PMAQI
13th Aug 2026297 PMAQI
13th Aug 2026278 PMAQI
13th Aug 2026299 PMAQI
13th Aug 20262710 PMAQI
13th Aug 20262711 PMAQI
14th Aug 20262912 AMAQI
14th Aug 2026271 AMAQI
14th Aug 2026272 AMAQI
14th Aug 2026253 AMAQI
20°C13/30°C
14th Aug 2026234 AMAQI
14th Aug 2026295 AMAQI
14th Aug 2026236 AMAQI
14th Aug 2026257 AMAQI
14th Aug 2026238 AMAQI
14th Aug 2026239 AMAQI
14th Aug 20262310 AMAQI
14th Aug 20262111 AMAQI
14th Aug 20262312 PMAQI
14th Aug 2026191 PMAQI
14th Aug 2026192 PMAQI
14th Aug 2026193 PMAQI
14th Aug 2026174 PMAQI
14th Aug 2026195 PMAQI
14th Aug 2026236 PMAQI
14th Aug 2026177 PMAQI
14th Aug 2026178 PMAQI
14th Aug 2026199 PMAQI
14th Aug 20262310 PMAQI
14th Aug 20262511 PMAQI
15th Aug 20262512 AMAQI
15th Aug 2026251 AMAQI
15th Aug 2026252 AMAQI
15th Aug 2026253 AMAQI
21°C15/27°C
15th Aug 2026234 AMAQI
4 AM15th Aug 2026235 AMAQI
15th Aug 2026256 AMAQI
15th Aug 2026217 AMAQI
15th Aug 2026238 AMAQI
15th Aug 2026259 AMAQI
15th Aug 20262310 AMAQI
15th Aug 20262111 AMAQI
11 AM15th Aug 20262112 PMAQI
15th Aug 2026231 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026273 PMAQI
15th Aug 2026294 PMAQI
15th Aug 2026275 PMAQI
15th Aug 2026326 PMAQI
6 PM15th Aug 2026337 PMAQI
15th Aug 2026318 PMAQI
15th Aug 2026369 PMAQI
15th Aug 20263110 PMAQI
15th Aug 20262911 PMAQI
11 PM3 AM
21°C16/26°C
Day time
Avg. Highest Time
2 PM
67AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM
31AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 2 PM (Avg. 67), while the lowest AQI was between 4 AM to 4 AM (Avg. 31).
Night time
Avg. Highest Time
7 PM
46AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
3 AM
33AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 46), while the lowest AQI was between 3 AM to 3 AM (Avg. 33).
2026 Days Vs Air Quality
Kokubo, Kofu, Yamanashi, Japan
2026
84%
189
16%
37
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Good
189 DaysModerate
37 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 227 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
Kokubo, Kofu, Yamanashi, Japan
AQI levels in 2026
AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
34AQI (US)
34AQI (US)
2nd January 2026
25AQI (US)
25AQI (US)
3rd January 2026
30AQI (US)
30AQI (US)
4th January 2026
32AQI (US)
32AQI (US)
5th January 2026
43AQI (US)
43AQI (US)
6th January 2026
22AQI (US)
22AQI (US)
7th January 2026
30AQI (US)
30AQI (US)
8th January 2026
33AQI (US)
33AQI (US)
9th January 2026
32AQI (US)
32AQI (US)
10th January 2026
47AQI (US)
47AQI (US)
11th January 2026
29AQI (US)
29AQI (US)
12th January 2026
27AQI (US)
27AQI (US)
13th January 2026
36AQI (US)
36AQI (US)
14th January 2026
27AQI (US)
27AQI (US)
15th January 2026
35AQI (US)
35AQI (US)
16th January 2026
55AQI (US)
55AQI (US)
17th January 2026
41AQI (US)
41AQI (US)
18th January 2026
39AQI (US)
39AQI (US)
19th January 2026
54AQI (US)
54AQI (US)
20th January 2026
35AQI (US)
35AQI (US)
21st January 2026
23AQI (US)
23AQI (US)
22nd January 2026
28AQI (US)
28AQI (US)
23rd January 2026
21AQI (US)
21AQI (US)
24th January 2026
23AQI (US)
23AQI (US)
25th January 2026
14AQI (US)
14AQI (US)
26th January 2026
22AQI (US)
22AQI (US)
27th January 2026
43AQI (US)
43AQI (US)
28th January 2026
28AQI (US)
28AQI (US)
29th January 2026
22AQI (US)
22AQI (US)
30th January 2026
37AQI (US)
37AQI (US)
31st January 2026
38AQI (US)
38AQI (US)
1st February 2026
42AQI (US)
42AQI (US)
2nd February 2026
25AQI (US)
25AQI (US)
3rd February 2026
24AQI (US)
24AQI (US)
4th February 2026
33AQI (US)
33AQI (US)
5th February 2026
51AQI (US)
51AQI (US)
6th February 2026
33AQI (US)
33AQI (US)
7th February 2026
27AQI (US)
27AQI (US)
8th February 2026
12AQI (US)
12AQI (US)
9th February 2026
44AQI (US)
44AQI (US)
10th February 2026
49AQI (US)
49AQI (US)
11th February 2026
48AQI (US)
48AQI (US)
12th February 2026
36AQI (US)
36AQI (US)
13th February 2026
54AQI (US)
54AQI (US)
14th February 2026
63AQI (US)
63AQI (US)
15th February 2026
57AQI (US)
57AQI (US)
16th February 2026
47AQI (US)
47AQI (US)
17th February 2026
26AQI (US)
26AQI (US)
18th February 2026
28AQI (US)
28AQI (US)
19th February 2026
33AQI (US)
33AQI (US)
20th February 2026
29AQI (US)
29AQI (US)
21st February 2026
49AQI (US)
49AQI (US)
22nd February 2026
45AQI (US)
45AQI (US)
23rd February 2026
48AQI (US)
48AQI (US)
24th February 2026
40AQI (US)
40AQI (US)
25th February 2026
26AQI (US)
26AQI (US)
26th February 2026
14AQI (US)
14AQI (US)
27th February 2026
32AQI (US)
32AQI (US)
28th February 2026
46AQI (US)
46AQI (US)
1st March 2026
53AQI (US)
53AQI (US)
2nd March 2026
85AQI (US)
85AQI (US)
3rd March 2026
42AQI (US)
42AQI (US)
4th March 2026
21AQI (US)
21AQI (US)
5th March 2026
60AQI (US)
60AQI (US)
6th March 2026
54AQI (US)
54AQI (US)
7th March 2026
48AQI (US)
48AQI (US)
8th March 2026
47AQI (US)
47AQI (US)
9th March 2026
53AQI (US)
53AQI (US)
10th March 2026
59AQI (US)
59AQI (US)
11th March 2026
29AQI (US)
29AQI (US)
12th March 2026
24AQI (US)
24AQI (US)
13th March 2026
47AQI (US)
47AQI (US)
14th March 2026
51AQI (US)
51AQI (US)
15th March 2026
66AQI (US)
66AQI (US)
16th March 2026
63AQI (US)
63AQI (US)
17th March 2026
55AQI (US)
55AQI (US)
18th March 2026
58AQI (US)
58AQI (US)
19th March 2026
40AQI (US)
40AQI (US)
20th March 2026
37AQI (US)
37AQI (US)
21st March 2026
48AQI (US)
48AQI (US)
22nd March 2026
55AQI (US)
55AQI (US)
23rd March 2026
56AQI (US)
56AQI (US)
24th March 2026
43AQI (US)
43AQI (US)
25th March 2026
49AQI (US)
49AQI (US)
26th March 2026
11AQI (US)
11AQI (US)
27th March 2026
20AQI (US)
20AQI (US)
28th March 2026
52AQI (US)
52AQI (US)
29th March 2026
43AQI (US)
43AQI (US)
30th March 2026
49AQI (US)
49AQI (US)
31st March 2026
17AQI (US)
17AQI (US)
1st April 2026
21AQI (US)
21AQI (US)
2nd April 2026
12AQI (US)
12AQI (US)
3rd April 2026
41AQI (US)
41AQI (US)
4th April 2026
44AQI (US)
44AQI (US)
5th April 2026
44AQI (US)
44AQI (US)
6th April 2026
36AQI (US)
36AQI (US)
7th April 2026
30AQI (US)
30AQI (US)
8th April 2026
26AQI (US)
26AQI (US)
9th April 2026
27AQI (US)
27AQI (US)
10th April 2026
45AQI (US)
45AQI (US)
11th April 2026
36AQI (US)
36AQI (US)
12th April 2026
38AQI (US)
38AQI (US)
13th April 2026
39AQI (US)
39AQI (US)
14th April 2026
49AQI (US)
49AQI (US)
15th April 2026
43AQI (US)
43AQI (US)
16th April 2026
35AQI (US)
35AQI (US)
17th April 2026
41AQI (US)
41AQI (US)
18th April 2026
35AQI (US)
35AQI (US)
19th April 2026
42AQI (US)
42AQI (US)
20th April 2026
38AQI (US)
38AQI (US)
21st April 2026
38AQI (US)
38AQI (US)
22nd April 2026
34AQI (US)
34AQI (US)
23rd April 2026
25AQI (US)
25AQI (US)
24th April 2026
18AQI (US)
18AQI (US)
25th April 2026
35AQI (US)
35AQI (US)
26th April 2026
53AQI (US)
53AQI (US)
27th April 2026
49AQI (US)
49AQI (US)
28th April 2026
44AQI (US)
44AQI (US)
29th April 2026
50AQI (US)
50AQI (US)
30th April 2026
29AQI (US)
29AQI (US)
1st May 2026
16AQI (US)
16AQI (US)
2nd May 2026
50AQI (US)
50AQI (US)
3rd May 2026
32AQI (US)
32AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
22AQI (US)
22AQI (US)
6th May 2026
38AQI (US)
38AQI (US)
7th May 2026
24AQI (US)
24AQI (US)
8th May 2026
28AQI (US)
28AQI (US)
9th May 2026
27AQI (US)
27AQI (US)
10th May 2026
35AQI (US)
35AQI (US)
11th May 2026
39AQI (US)
39AQI (US)
12th May 2026
42AQI (US)
42AQI (US)
13th May 2026
46AQI (US)
46AQI (US)
14th May 2026
42AQI (US)
42AQI (US)
15th May 2026
39AQI (US)
39AQI (US)
16th May 2026
85AQI (US)
85AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
54AQI (US)
54AQI (US)
19th May 2026
49AQI (US)
49AQI (US)
20th May 2026
60AQI (US)
60AQI (US)
21st May 2026
60AQI (US)
60AQI (US)
22nd May 2026
60AQI (US)
60AQI (US)
23rd May 2026
54AQI (US)
54AQI (US)
24th May 2026
58AQI (US)
58AQI (US)
25th May 2026
48AQI (US)
48AQI (US)
26th May 2026
40AQI (US)
40AQI (US)
27th May 2026
28AQI (US)
28AQI (US)
28th May 2026
26AQI (US)
26AQI (US)
29th May 2026
25AQI (US)
25AQI (US)
30th May 2026
27AQI (US)
27AQI (US)
31st May 2026
29AQI (US)
29AQI (US)
1st June 2026
33AQI (US)
33AQI (US)
2nd June 2026
36AQI (US)
36AQI (US)
3rd June 2026
19AQI (US)
19AQI (US)
4th June 2026
17AQI (US)
17AQI (US)
5th June 2026
23AQI (US)
23AQI (US)
6th June 2026
25AQI (US)
25AQI (US)
7th June 2026
21AQI (US)
21AQI (US)
8th June 2026
15AQI (US)
15AQI (US)
9th June 2026
16AQI (US)
16AQI (US)
10th June 2026
23AQI (US)
23AQI (US)
11th June 2026
26AQI (US)
26AQI (US)
12th June 2026
27AQI (US)
27AQI (US)
13th June 2026
29AQI (US)
29AQI (US)
14th June 2026
27AQI (US)
27AQI (US)
15th June 2026
21AQI (US)
21AQI (US)
16th June 2026
20AQI (US)
20AQI (US)
17th June 2026
27AQI (US)
27AQI (US)
18th June 2026
29AQI (US)
29AQI (US)
19th June 2026
36AQI (US)
36AQI (US)
20th June 2026
35AQI (US)
35AQI (US)
21st June 2026
23AQI (US)
23AQI (US)
22nd June 2026
28AQI (US)
28AQI (US)
23rd June 2026
18AQI (US)
18AQI (US)
24th June 2026
20AQI (US)
20AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
27AQI (US)
27AQI (US)
27th June 2026
24AQI (US)
24AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
29AQI (US)
29AQI (US)
30th June 2026
38AQI (US)
38AQI (US)
1st July 2026
46AQI (US)
46AQI (US)
2nd July 2026
23AQI (US)
23AQI (US)
3rd July 2026
17AQI (US)
17AQI (US)
4th July 2026
24AQI (US)
24AQI (US)
5th July 2026
21AQI (US)
21AQI (US)
6th July 2026
23AQI (US)
23AQI (US)
7th July 2026
24AQI (US)
24AQI (US)
8th July 2026
25AQI (US)
25AQI (US)
9th July 2026
28AQI (US)
28AQI (US)
10th July 2026
30AQI (US)
30AQI (US)
11th July 2026
25AQI (US)
25AQI (US)
12th July 2026
25AQI (US)
25AQI (US)
13th July 2026
36AQI (US)
36AQI (US)
14th July 2026
50AQI (US)
50AQI (US)
15th July 2026
59AQI (US)
59AQI (US)
16th July 2026
64AQI (US)
64AQI (US)
17th July 2026
58AQI (US)
58AQI (US)
18th July 2026
41AQI (US)
41AQI (US)
19th July 2026
36AQI (US)
36AQI (US)
20th July 2026
46AQI (US)
46AQI (US)
21st July 2026
46AQI (US)
46AQI (US)
22nd July 2026
58AQI (US)
58AQI (US)
23rd July 2026
80AQI (US)
80AQI (US)
24th July 2026
75AQI (US)
75AQI (US)
25th July 2026
71AQI (US)
71AQI (US)
26th July 2026
47AQI (US)
47AQI (US)
27th July 2026
33AQI (US)
33AQI (US)
28th July 2026
39AQI (US)
39AQI (US)
29th July 2026
32AQI (US)
32AQI (US)
30th July 2026
39AQI (US)
39AQI (US)
31st July 2026
45AQI (US)
45AQI (US)
1st August 2026
61AQI (US)
61AQI (US)
2nd August 2026
48AQI (US)
48AQI (US)
3rd August 2026
24AQI (US)
24AQI (US)
4th August 2026
34AQI (US)
34AQI (US)
5th August 2026
41AQI (US)
41AQI (US)
6th August 2026
45AQI (US)
45AQI (US)
7th August 2026
37AQI (US)
37AQI (US)
8th August 2026
41AQI (US)
41AQI (US)
9th August 2026
37AQI (US)
37AQI (US)
10th August 2026
33AQI (US)
33AQI (US)
11th August 2026
32AQI (US)
32AQI (US)
12th August 2026
21AQI (US)
21AQI (US)
13th August 2026
28AQI (US)
28AQI (US)
14th August 2026
22AQI (US)
22AQI (US)
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
32AQI (US)
38AQI (US)
46AQI (US)
37AQI (US)
41AQI (US)
26AQI (US)
41AQI (US)
36AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202637AQI (US)
29
2
24
4
17
14
29
1
23
8
30
24
7
13
1
189
37
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202541AQI (US)
29
2
27
1
22
9
30
29
2
28
2
22
9
24
7
29
1
11
20
25
5
22
9
298
67
Highest AQI (US) recorded in
October51AQI (US)
Lowest AQI (US) recorded in
May30AQI (US)
202448AQI (US)
25
6
25
4
22
9
12
18
18
13
14
16
6
25
6
23
2
15
15
30
1
28
2
29
2
230
134
2
Highest AQI (US) recorded in
August68AQI (US)
Lowest AQI (US) recorded in
October34AQI (US)
202352AQI (US)
25
3
2
26
2
16
15
18
12
21
10
14
16
6
25
6
25
8
22
16
15
17
12
18
13
191
170
2
Highest AQI (US) recorded in
July63AQI (US)
Lowest AQI (US) recorded in
February44AQI (US)
202247AQI (US)
26
5
18
1
22
9
8
9
11
20
10
20
13
8
1
18
10
24
7
17
13
28
3
196
105
Highest AQI (US) recorded in
May55AQI (US)
Lowest AQI (US) recorded in
February40AQI (US)
202142AQI (US)
22
8
23
5
29
1
19
2
23
8
19
11
18
13
20
11
27
3
24
7
20
10
20
11
264
90
Highest AQI (US) recorded in
June49AQI (US)
Lowest AQI (US) recorded in
March33AQI (US)
202039AQI (US)
12
1
18
3
18
20
10
29
2
16
14
1
19
25
6
20
10
22
9
199
55
1
Highest AQI (US) recorded in
August54AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
52AQI (US)Least Polluted Year Recorded
2026(Avg.)
37AQI (US)Kokubo's annual 2026 AQI (US) (37) shows an average percentage change of -16.6% (improved AQI (US)) compared to previous years: 2020 (39), 2021 (42), 2022 (47), 2023 (52), 2024 (48), 2025 (41).
