Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Marunouchi, 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

Marunouchi, Kofu, Yamanashi, Japan

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
7th Aug 2024
67AQI
Lowest AQI recorded on
3rd Aug 2026
22AQI

Same Day Analysis (14th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 35 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 13th Aug - 14th Aug 2026

Marunouchi, Kofu, Yamanashi, Japan

AQI
Day
Night
.

4 AM13th Aug 2026

6 PM

3 AM14th Aug 2026

Day time
Avg. Highest Time
10AM13th Aug

49AQI

Avg. Lowest Time
7AM13th Aug

23AQI

Night time
Avg. Highest Time
8PM13th Aug

40AQI

Avg. Lowest Time
4AM13th Aug

23AQI

In the last 24 hours,

Marunouchi's AQI reached its highest point of 49 at 10 AM during the Day, while the lowest point, 23, was recorded at 7 AM during the Day between 13th Aug and 14th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Marunouchi, Kofu, Yamanashi, Japan

JulAug
16th - 17th17th - 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
Day
Night
16th Jul 2026504 AMAQI
16th Jul 2026665 AMAQI
16th Jul 2026566 AMAQI
16th Jul 2026597 AMAQI
16th Jul 2026658 AMAQI
16th Jul 2026669 AMAQI
16th Jul 20267010 AMAQI
16th Jul 20268811 AMAQI
16th Jul 202610512 PMAQI
16th Jul 2026951 PMAQI
16th Jul 2026892 PMAQI
16th Jul 2026853 PMAQI
16th Jul 2026844 PMAQI
16th Jul 2026865 PMAQI
16th Jul 2026806 PMAQI
16th Jul 2026627 PMAQI
16th Jul 2026338 PMAQI
16th Jul 2026389 PMAQI
16th Jul 20264010 PMAQI
16th Jul 20264011 PMAQI
17th Jul 20263612 AMAQI
17th Jul 2026461 AMAQI
17th Jul 2026502 AMAQI
17th Jul 2026403 AMAQI

25°C18/34°C

17th Jul 2026314 AMAQI
17th Jul 2026335 AMAQI
17th Jul 2026386 AMAQI
17th Jul 2026577 AMAQI
17th Jul 2026588 AMAQI
17th Jul 2026539 AMAQI
17th Jul 20265310 AMAQI
17th Jul 20266511 AMAQI
17th Jul 20267612 PMAQI
17th Jul 2026761 PMAQI
17th Jul 2026792 PMAQI
17th Jul 2026783 PMAQI
17th Jul 2026724 PMAQI
17th Jul 2026655 PMAQI
17th Jul 2026686 PMAQI
17th Jul 2026647 PMAQI
17th Jul 2026548 PMAQI
17th Jul 2026539 PMAQI
17th Jul 20265010 PMAQI
17th Jul 20264211 PMAQI
18th Jul 20264012 AMAQI
18th Jul 2026361 AMAQI
18th Jul 2026382 AMAQI
18th Jul 2026313 AMAQI

24°C18/29°C

18th Jul 2026294 AMAQI
18th Jul 2026255 AMAQI
18th Jul 2026216 AMAQI
18th Jul 2026217 AMAQI
18th Jul 2026258 AMAQI
18th Jul 2026259 AMAQI
18th Jul 20262310 AMAQI
18th Jul 20262111 AMAQI
18th Jul 20262512 PMAQI
18th Jul 2026381 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026573 PMAQI
18th Jul 2026524 PMAQI
18th Jul 2026555 PMAQI
18th Jul 2026546 PMAQI
18th Jul 2026427 PMAQI
18th Jul 2026298 PMAQI
18th Jul 2026239 PMAQI
18th Jul 20262710 PMAQI
18th Jul 20263111 PMAQI
19th Jul 20263312 AMAQI
19th Jul 2026311 AMAQI
19th Jul 2026312 AMAQI
19th Jul 2026313 AMAQI

24°C21/27°C

19th Jul 2026314 AMAQI
19th Jul 2026315 AMAQI
19th Jul 2026276 AMAQI
19th Jul 2026237 AMAQI
19th Jul 2026238 AMAQI
19th Jul 2026219 AMAQI
19th Jul 20262310 AMAQI
19th Jul 20262711 AMAQI
19th Jul 20264212 PMAQI
19th Jul 2026361 PMAQI
19th Jul 2026382 PMAQI
19th Jul 2026383 PMAQI
19th Jul 2026444 PMAQI
19th Jul 2026405 PMAQI
19th Jul 2026486 PMAQI
19th Jul 2026407 PMAQI
19th Jul 2026298 PMAQI
19th Jul 2026299 PMAQI
19th Jul 20262710 PMAQI
19th Jul 20262711 PMAQI
20th Jul 20262912 AMAQI
20th Jul 2026271 AMAQI
20th Jul 2026342 AMAQI
20th Jul 2026323 AMAQI

24°C19/31°C

20th Jul 2026294 AMAQI
20th Jul 2026275 AMAQI
20th Jul 2026256 AMAQI
20th Jul 2026257 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026349 AMAQI
20th Jul 20265010 AMAQI
20th Jul 20265111 AMAQI
20th Jul 20264812 PMAQI
20th Jul 2026601 PMAQI
20th Jul 2026512 PMAQI
20th Jul 2026483 PMAQI
20th Jul 2026494 PMAQI
20th Jul 2026475 PMAQI
20th Jul 2026486 PMAQI
20th Jul 2026517 PMAQI
20th Jul 2026408 PMAQI
20th Jul 2026389 PMAQI
20th Jul 20265010 PMAQI
20th Jul 20263811 PMAQI
21st Jul 20264812 AMAQI
21st Jul 2026481 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026383 AMAQI

25°C18/31°C

21st Jul 2026384 AMAQI
21st Jul 2026385 AMAQI
21st Jul 2026216 AMAQI
21st Jul 2026257 AMAQI
21st Jul 2026278 AMAQI
21st Jul 2026259 AMAQI
21st Jul 20263210 AMAQI
21st Jul 20263811 AMAQI
21st Jul 2026651 PMAQI
21st Jul 2026572 PMAQI
21st Jul 2026673 PMAQI
21st Jul 2026664 PMAQI
21st Jul 2026675 PMAQI
21st Jul 2026606 PMAQI
21st Jul 2026957 PMAQI
21st Jul 2026468 PMAQI
21st Jul 2026409 PMAQI
21st Jul 20263810 PMAQI
21st Jul 20264011 PMAQI
22nd Jul 20264212 AMAQI
22nd Jul 2026401 AMAQI
22nd Jul 2026402 AMAQI
22nd Jul 2026323 AMAQI

25°C18/34°C

22nd Jul 2026324 AMAQI
22nd Jul 2026535 AMAQI
22nd Jul 2026566 AMAQI
22nd Jul 2026527 AMAQI
22nd Jul 2026538 AMAQI
22nd Jul 2026659 AMAQI
22nd Jul 20266810 AMAQI
22nd Jul 20267311 AMAQI
22nd Jul 20266912 PMAQI
22nd Jul 2026761 PMAQI
22nd Jul 2026842 PMAQI
22nd Jul 2026813 PMAQI
22nd Jul 2026764 PMAQI
22nd Jul 2026785 PMAQI
22nd Jul 2026746 PMAQI
22nd Jul 2026727 PMAQI
22nd Jul 2026608 PMAQI
22nd Jul 2026629 PMAQI
22nd Jul 20266510 PMAQI
22nd Jul 20266011 PMAQI
23rd Jul 20265712 AMAQI
23rd Jul 2026561 AMAQI
23rd Jul 2026682 AMAQI
23rd Jul 2026563 AMAQI

26°C18/36°C

23rd Jul 2026604 AMAQI
23rd Jul 2026645 AMAQI
23rd Jul 2026666 AMAQI
23rd Jul 2026627 AMAQI
23rd Jul 2026568 AMAQI
23rd Jul 2026609 AMAQI
23rd Jul 20266810 AMAQI
23rd Jul 20267811 AMAQI
23rd Jul 20267412 PMAQI
23rd Jul 2026791 PMAQI
23rd Jul 2026742 PMAQI
23rd Jul 2026733 PMAQI
23rd Jul 2026904 PMAQI
23rd Jul 2026925 PMAQI
23rd Jul 2026886 PMAQI
23rd Jul 2026837 PMAQI
23rd Jul 2026788 PMAQI
23rd Jul 2026659 PMAQI
23rd Jul 20265710 PMAQI
23rd Jul 20265211 PMAQI
24th Jul 20265212 AMAQI
24th Jul 2026561 AMAQI
24th Jul 2026562 AMAQI
24th Jul 2026533 AMAQI

26°C18/36°C

24th Jul 2026604 AMAQI
24th Jul 2026655 AMAQI
24th Jul 2026706 AMAQI
24th Jul 2026607 AMAQI
24th Jul 2026628 AMAQI
24th Jul 2026669 AMAQI
24th Jul 20267310 AMAQI
24th Jul 20267811 AMAQI
24th Jul 20268312 PMAQI
24th Jul 2026801 PMAQI
24th Jul 2026852 PMAQI
24th Jul 2026783 PMAQI
24th Jul 2026864 PMAQI
24th Jul 2026905 PMAQI
24th Jul 2026736 PMAQI
24th Jul 2026667 PMAQI
24th Jul 2026648 PMAQI
24th Jul 2026509 PMAQI
24th Jul 20264210 PMAQI
24th Jul 20265011 PMAQI
25th Jul 20265112 AMAQI
25th Jul 2026461 AMAQI
25th Jul 2026552 AMAQI
25th Jul 2026343 AMAQI

24°C18/33°C

25th Jul 2026404 AMAQI
25th Jul 2026515 AMAQI
25th Jul 2026596 AMAQI
25th Jul 2026597 AMAQI
25th Jul 2026488 AMAQI
25th Jul 2026389 AMAQI
25th Jul 20265310 AMAQI
25th Jul 20266711 AMAQI
25th Jul 20267312 PMAQI
25th Jul 2026641 PMAQI
25th Jul 2026622 PMAQI
25th Jul 2026563 PMAQI
25th Jul 2026604 PMAQI
25th Jul 2026565 PMAQI
25th Jul 2026536 PMAQI
25th Jul 2026597 PMAQI
25th Jul 2026718 PMAQI
25th Jul 2026679 PMAQI
25th Jul 20266210 PMAQI
25th Jul 20265311 PMAQI
26th Jul 20265712 AMAQI
26th Jul 2026501 AMAQI
26th Jul 2026422 AMAQI
26th Jul 2026463 AMAQI

24°C17/34°C

26th Jul 2026254 AMAQI
26th Jul 2026295 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026387 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20263610 AMAQI
26th Jul 20265411 AMAQI
26th Jul 20266012 PMAQI
26th Jul 2026581 PMAQI
26th Jul 2026602 PMAQI
26th Jul 2026593 PMAQI
26th Jul 2026364 PMAQI
26th Jul 2026215 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026368 PMAQI
26th Jul 2026219 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262511 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026253 AMAQI

23°C17/30°C

27th Jul 2026254 AMAQI
27th Jul 2026255 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026219 AMAQI
27th Jul 20262910 AMAQI
27th Jul 20263611 AMAQI
27th Jul 20265412 PMAQI
27th Jul 2026461 PMAQI
27th Jul 2026522 PMAQI
27th Jul 2026513 PMAQI
27th Jul 2026484 PMAQI
27th Jul 2026385 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026277 PMAQI
27th Jul 2026568 PMAQI
27th Jul 2026519 PMAQI
27th Jul 20264810 PMAQI
27th Jul 20265411 PMAQI
28th Jul 20264812 AMAQI
28th Jul 2026541 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026273 AMAQI

22°C16/29°C

28th Jul 2026214 AMAQI
28th Jul 2026215 AMAQI
28th Jul 2026216 AMAQI
28th Jul 2026217 AMAQI
28th Jul 2026338 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20262910 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20263112 PMAQI
28th Jul 2026291 PMAQI
28th Jul 2026402 PMAQI
28th Jul 2026543 PMAQI
28th Jul 2026404 PMAQI
28th Jul 2026465 PMAQI
28th Jul 2026386 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026308 PMAQI
28th Jul 2026539 PMAQI
28th Jul 20263810 PMAQI
28th Jul 20265211 PMAQI
29th Jul 20264212 AMAQI
29th Jul 2026321 AMAQI
29th Jul 2026422 AMAQI
29th Jul 2026363 AMAQI

22°C16/29°C

29th Jul 2026314 AMAQI
29th Jul 2026305 AMAQI
29th Jul 2026406 AMAQI
29th Jul 2026297 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026259 AMAQI
29th Jul 20263810 AMAQI
29th Jul 20264711 AMAQI
29th Jul 20263612 PMAQI
29th Jul 2026421 PMAQI
29th Jul 2026502 PMAQI
29th Jul 2026383 PMAQI
29th Jul 2026324 PMAQI
29th Jul 2026405 PMAQI
29th Jul 2026446 PMAQI
29th Jul 2026507 PMAQI
29th Jul 2026388 PMAQI
29th Jul 2026349 PMAQI
29th Jul 20263810 PMAQI
29th Jul 20264011 PMAQI
30th Jul 20262912 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026362 AMAQI
30th Jul 2026423 AMAQI

22°C14/33°C

30th Jul 2026324 AMAQI
30th Jul 2026485 AMAQI
30th Jul 2026406 AMAQI
30th Jul 2026367 AMAQI
30th Jul 2026328 AMAQI
30th Jul 2026369 AMAQI
30th Jul 20263610 AMAQI
30th Jul 20264611 AMAQI
30th Jul 20264012 PMAQI
30th Jul 2026501 PMAQI
30th Jul 2026442 PMAQI
30th Jul 2026463 PMAQI
30th Jul 2026484 PMAQI
30th Jul 2026405 PMAQI
30th Jul 2026406 PMAQI
30th Jul 2026327 PMAQI
30th Jul 2026408 PMAQI
30th Jul 2026649 PMAQI
30th Jul 20266610 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20263812 AMAQI
31st Jul 2026381 AMAQI
31st Jul 2026332 AMAQI
31st Jul 2026333 AMAQI

24°C16/35°C

31st Jul 2026294 AMAQI
31st Jul 2026335 AMAQI
31st Jul 2026296 AMAQI
31st Jul 2026297 AMAQI
31st Jul 2026218 AMAQI
31st Jul 2026319 AMAQI
31st Jul 20262510 AMAQI
31st Jul 20265311 AMAQI
31st Jul 20266412 PMAQI
31st Jul 2026831 PMAQI
31st Jul 2026662 PMAQI
31st Jul 2026603 PMAQI
31st Jul 2026714 PMAQI
31st Jul 2026765 PMAQI
31st Jul 2026826 PMAQI
31st Jul 2026577 PMAQI
31st Jul 2026428 PMAQI
31st Jul 2026429 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20263612 AMAQI
1st Aug 2026221 AMAQI
1st Aug 2026272 AMAQI
1st Aug 2026403 AMAQI

24°C17/34°C

1st Aug 2026524 AMAQI
1st Aug 2026445 AMAQI
1st Aug 2026366 AMAQI
1st Aug 2026487 AMAQI
1st Aug 2026518 AMAQI
1st Aug 2026429 AMAQI
1st Aug 20266510 AMAQI
1st Aug 20267411 AMAQI
1st Aug 20267412 PMAQI
1st Aug 2026731 PMAQI
1st Aug 2026692 PMAQI
1st Aug 2026623 PMAQI
1st Aug 2026594 PMAQI
1st Aug 2026645 PMAQI
1st Aug 2026646 PMAQI
1st Aug 2026577 PMAQI
1st Aug 2026658 PMAQI
1st Aug 2026309 PMAQI
1st Aug 20264210 PMAQI
1st Aug 20264411 PMAQI
2nd Aug 20263012 AMAQI
2nd Aug 2026441 AMAQI
2nd Aug 2026312 AMAQI
2nd Aug 2026313 AMAQI

24°C17/34°C

2nd Aug 2026294 AMAQI
2nd Aug 2026235 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026338 AMAQI
2nd Aug 2026429 AMAQI
2nd Aug 20263310 AMAQI
2nd Aug 20266511 AMAQI
2nd Aug 20266512 PMAQI
2nd Aug 2026701 PMAQI
2nd Aug 2026632 PMAQI
2nd Aug 2026523 PMAQI
2nd Aug 2026514 PMAQI
2nd Aug 2026595 PMAQI
2nd Aug 2026536 PMAQI
2nd Aug 2026467 PMAQI
2nd Aug 2026268 PMAQI
2nd Aug 2026389 PMAQI
2nd Aug 20262510 PMAQI
2nd Aug 20262911 PMAQI
3rd Aug 20262912 AMAQI
3rd Aug 2026251 AMAQI
3rd Aug 2026292 AMAQI
3rd Aug 2026233 AMAQI

24°C18/32°C

3rd Aug 2026234 AMAQI
3rd Aug 2026275 AMAQI
3rd Aug 2026256 AMAQI
3rd Aug 2026217 AMAQI
3rd Aug 2026258 AMAQI
3rd Aug 2026259 AMAQI
3rd Aug 20262510 AMAQI
3rd Aug 20262111 AMAQI
3rd Aug 20262112 PMAQI
3rd Aug 2026141 PMAQI
3rd Aug 2026192 PMAQI
3rd Aug 2026173 PMAQI
3rd Aug 2026194 PMAQI
3rd Aug 2026255 PMAQI
3rd Aug 2026216 PMAQI
3rd Aug 2026257 PMAQI
3rd Aug 2026218 PMAQI
3rd Aug 2026179 PMAQI
3rd Aug 20261710 PMAQI
3rd Aug 20261711 PMAQI
4th Aug 20261712 AMAQI
4th Aug 2026141 AMAQI
4th Aug 2026142 AMAQI
4th Aug 2026193 AMAQI

24°C22/28°C

4th Aug 2026174 AMAQI
4th Aug 2026215 AMAQI
4th Aug 2026216 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026259 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20262311 AMAQI
4th Aug 20262312 PMAQI
4th Aug 2026211 PMAQI
4th Aug 2026212 PMAQI
4th Aug 2026273 PMAQI
4th Aug 2026124 PMAQI
4th Aug 2026215 PMAQI
4th Aug 2026296 PMAQI
4th Aug 2026367 PMAQI
4th Aug 2026388 PMAQI
4th Aug 2026389 PMAQI
4th Aug 20263810 PMAQI
4th Aug 20263811 PMAQI
5th Aug 20264412 AMAQI
5th Aug 2026381 AMAQI
5th Aug 2026402 AMAQI
5th Aug 2026383 AMAQI

23°C14/29°C

5th Aug 2026274 AMAQI
5th Aug 2026275 AMAQI
5th Aug 2026296 AMAQI
5th Aug 2026297 AMAQI
5th Aug 2026328 AMAQI
5th Aug 2026259 AMAQI
5th Aug 20262910 AMAQI
5th Aug 20264211 AMAQI
5th Aug 20264912 PMAQI
5th Aug 2026401 PMAQI
5th Aug 2026422 PMAQI
5th Aug 2026313 PMAQI
5th Aug 2026384 PMAQI
5th Aug 2026445 PMAQI
5th Aug 2026366 PMAQI
5th Aug 2026427 PMAQI
5th Aug 2026348 PMAQI
5th Aug 2026349 PMAQI
5th Aug 20264510 PMAQI
5th Aug 20264911 PMAQI
6th Aug 20264012 AMAQI
6th Aug 2026491 AMAQI
6th Aug 2026322 AMAQI
6th Aug 2026273 AMAQI

22°C13/32°C

6th Aug 2026234 AMAQI
6th Aug 2026255 AMAQI
6th Aug 2026366 AMAQI
6th Aug 2026467 AMAQI
6th Aug 2026468 AMAQI
6th Aug 2026469 AMAQI
6th Aug 20265210 AMAQI
6th Aug 20265411 AMAQI
6th Aug 20265512 PMAQI
6th Aug 2026531 PMAQI
6th Aug 2026532 PMAQI
6th Aug 2026423 PMAQI
6th Aug 2026344 PMAQI
6th Aug 2026385 PMAQI
6th Aug 2026296 PMAQI
6th Aug 2026217 PMAQI
6th Aug 2026368 PMAQI
6th Aug 2026299 PMAQI
6th Aug 20264010 PMAQI
6th Aug 20263811 PMAQI
7th Aug 20265512 AMAQI
7th Aug 2026581 AMAQI
7th Aug 2026422 AMAQI
7th Aug 2026533 AMAQI

23°C16/31°C

7th Aug 2026484 AMAQI
7th Aug 2026495 AMAQI
7th Aug 2026406 AMAQI
7th Aug 2026447 AMAQI
7th Aug 2026488 AMAQI
7th Aug 2026429 AMAQI
7th Aug 20264610 AMAQI
7th Aug 20264911 AMAQI
7th Aug 20263412 PMAQI
7th Aug 2026481 PMAQI
7th Aug 2026582 PMAQI
7th Aug 2026513 PMAQI
7th Aug 2026384 PMAQI
7th Aug 2026315 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026298 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20264010 PMAQI
7th Aug 20265211 PMAQI
8th Aug 20264212 AMAQI
8th Aug 2026531 AMAQI
8th Aug 2026482 AMAQI
8th Aug 2026363 AMAQI

23°C16/31°C

8th Aug 2026404 AMAQI
8th Aug 2026255 AMAQI
8th Aug 2026216 AMAQI
8th Aug 2026277 AMAQI
8th Aug 2026278 AMAQI
8th Aug 2026409 AMAQI
8th Aug 20263310 AMAQI
8th Aug 20263411 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026361 PMAQI
8th Aug 2026382 PMAQI
8th Aug 2026303 PMAQI
8th Aug 2026384 PMAQI
8th Aug 2026425 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026327 PMAQI
8th Aug 2026338 PMAQI
8th Aug 2026279 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20264211 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026231 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026253 AMAQI

23°C16/31°C

9th Aug 2026254 AMAQI
9th Aug 2026215 AMAQI
9th Aug 2026236 AMAQI
9th Aug 2026257 AMAQI
9th Aug 2026278 AMAQI
9th Aug 2026299 AMAQI
9th Aug 20262510 AMAQI
9th Aug 20262911 AMAQI
9th Aug 20263312 PMAQI
9th Aug 2026311 PMAQI
9th Aug 2026442 PMAQI
9th Aug 2026323 PMAQI
9th Aug 2026294 PMAQI
9th Aug 2026275 PMAQI
9th Aug 2026306 PMAQI
9th Aug 2026257 PMAQI
9th Aug 2026278 PMAQI
9th Aug 2026299 PMAQI
9th Aug 20263410 PMAQI
9th Aug 20262711 PMAQI
10th Aug 20262712 AMAQI
10th Aug 2026271 AMAQI
10th Aug 2026322 AMAQI
10th Aug 2026213 AMAQI

22°C16/29°C

10th Aug 2026234 AMAQI
10th Aug 2026235 AMAQI
10th Aug 2026256 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026348 AMAQI
10th Aug 2026449 AMAQI
10th Aug 20265010 AMAQI
10th Aug 20264211 AMAQI
10th Aug 20264912 PMAQI
10th Aug 2026541 PMAQI
10th Aug 2026272 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026424 PMAQI
10th Aug 2026315 PMAQI
10th Aug 2026426 PMAQI
10th Aug 2026237 PMAQI
10th Aug 2026238 PMAQI
10th Aug 2026279 PMAQI
10th Aug 20263410 PMAQI
10th Aug 20263611 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026441 AMAQI
11th Aug 2026342 AMAQI
11th Aug 2026383 AMAQI

22°C15/31°C

11th Aug 2026364 AMAQI
11th Aug 2026425 AMAQI
11th Aug 2026426 AMAQI
11th Aug 2026507 AMAQI
11th Aug 2026488 AMAQI
11th Aug 2026449 AMAQI
11th Aug 20266010 AMAQI
11th Aug 20265911 AMAQI
11th Aug 20264812 PMAQI
11th Aug 2026541 PMAQI
11th Aug 2026512 PMAQI
11th Aug 2026403 PMAQI
11th Aug 2026384 PMAQI
11th Aug 2026385 PMAQI
11th Aug 2026346 PMAQI
11th Aug 2026367 PMAQI
11th Aug 2026258 PMAQI
11th Aug 2026279 PMAQI
11th Aug 20264010 PMAQI
11th Aug 20263011 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026361 AMAQI
12th Aug 2026292 AMAQI
12th Aug 2026343 AMAQI

20°C14/27°C

12th Aug 2026274 AMAQI
12th Aug 2026295 AMAQI
12th Aug 2026256 AMAQI
12th Aug 2026327 AMAQI
12th Aug 2026258 AMAQI
12th Aug 2026189 AMAQI
12th Aug 20261210 AMAQI
12th Aug 20261411 AMAQI
12th Aug 20261612 PMAQI
12th Aug 2026171 PMAQI
12th Aug 2026272 PMAQI
12th Aug 2026333 PMAQI
12th Aug 2026254 PMAQI
12th Aug 2026215 PMAQI
12th Aug 2026276 PMAQI
12th Aug 2026367 PMAQI
12th Aug 2026388 PMAQI
12th Aug 2026239 PMAQI
12th Aug 20262710 PMAQI
12th Aug 20262311 PMAQI
13th Aug 20262112 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026253 AMAQI

19°C14/24°C

13th Aug 2026234 AMAQI
13th Aug 2026295 AMAQI
13th Aug 2026276 AMAQI
13th Aug 2026237 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026389 AMAQI
13th Aug 20264910 AMAQI
13th Aug 20264011 AMAQI
13th Aug 20263612 PMAQI
13th Aug 2026341 PMAQI
13th Aug 2026422 PMAQI
13th Aug 2026383 PMAQI
13th Aug 2026404 PMAQI
13th Aug 2026275 PMAQI
13th Aug 2026296 PMAQI
13th Aug 2026277 PMAQI
13th Aug 2026408 PMAQI
13th Aug 2026269 PMAQI
13th Aug 20263110 PMAQI
13th Aug 20262511 PMAQI
14th Aug 20263112 AMAQI
14th Aug 2026311 AMAQI
14th Aug 2026312 AMAQI
14th Aug 2026363 AMAQI

20°C13/30°C

14th Aug 2026254 AMAQI
4 AM
14th Aug 2026255 AMAQI
14th Aug 2026256 AMAQI
14th Aug 2026367 AMAQI
14th Aug 2026238 AMAQI
14th Aug 2026329 AMAQI
14th Aug 20264210 AMAQI
14th Aug 20265111 AMAQI
11 AM
14th Aug 20264612 PMAQI
14th Aug 2026461 PMAQI
14th Aug 2026442 PMAQI
14th Aug 2026423 PMAQI
14th Aug 2026364 PMAQI
14th Aug 2026235 PMAQI
14th Aug 2026406 PMAQI
6 PM
14th Aug 2026387 PMAQI
14th Aug 2026368 PMAQI
14th Aug 2026259 PMAQI
14th Aug 20263410 PMAQI
14th Aug 20264011 PMAQI
11 PM
3 AM

21°C15/27°C

Day time
Avg. Highest Time
1 PM - 2 PM

53AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 2 PM (Avg. 53), while the lowest AQI was between 4 AM to 4 AM (Avg. 33).
Night time
Avg. Highest Time
7 PM

44AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
2 AM - 3 AM

36AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 44), while the lowest AQI was between 2 AM to 3 AM (Avg. 36).

2026 Days Vs Air Quality

Marunouchi, Kofu, Yamanashi, Japan

2026

84%

189

16%

37

Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)

Good
189 Days
Moderate
37 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2026, 84% of 226 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

Marunouchi, 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
35AQI (US)
2nd January 2026
25AQI (US)
3rd January 2026
30AQI (US)
4th January 2026
31AQI (US)
5th January 2026
40AQI (US)
6th January 2026
23AQI (US)
7th January 2026
31AQI (US)
8th January 2026
33AQI (US)
9th January 2026
31AQI (US)
10th January 2026
45AQI (US)
11th January 2026
29AQI (US)
12th January 2026
27AQI (US)
13th January 2026
37AQI (US)
14th January 2026
27AQI (US)
15th January 2026
36AQI (US)
16th January 2026
52AQI (US)
17th January 2026
41AQI (US)
18th January 2026
38AQI (US)
19th January 2026
53AQI (US)
20th January 2026
34AQI (US)
21st January 2026
25AQI (US)
22nd January 2026
28AQI (US)
23rd January 2026
21AQI (US)
24th January 2026
24AQI (US)
25th January 2026
14AQI (US)
26th January 2026
23AQI (US)
27th January 2026
43AQI (US)
28th January 2026
28AQI (US)
29th January 2026
21AQI (US)
30th January 2026
37AQI (US)
31st January 2026
38AQI (US)
1st February 2026
41AQI (US)
2nd February 2026
25AQI (US)
3rd February 2026
22AQI (US)
4th February 2026
33AQI (US)
5th February 2026
51AQI (US)
6th February 2026
33AQI (US)
7th February 2026
27AQI (US)
8th February 2026
12AQI (US)
9th February 2026
44AQI (US)
10th February 2026
48AQI (US)
11th February 2026
48AQI (US)
12th February 2026
36AQI (US)
13th February 2026
54AQI (US)
14th February 2026
63AQI (US)
15th February 2026
57AQI (US)
16th February 2026
48AQI (US)
17th February 2026
25AQI (US)
18th February 2026
28AQI (US)
19th February 2026
33AQI (US)
20th February 2026
29AQI (US)
21st February 2026
49AQI (US)
22nd February 2026
45AQI (US)
23rd February 2026
48AQI (US)
24th February 2026
40AQI (US)
25th February 2026
26AQI (US)
26th February 2026
14AQI (US)
27th February 2026
32AQI (US)
28th February 2026
46AQI (US)
1st March 2026
53AQI (US)
2nd March 2026
83AQI (US)
3rd March 2026
41AQI (US)
4th March 2026
22AQI (US)
5th March 2026
60AQI (US)
6th March 2026
54AQI (US)
7th March 2026
48AQI (US)
8th March 2026
47AQI (US)
9th March 2026
54AQI (US)
10th March 2026
58AQI (US)
11th March 2026
29AQI (US)
12th March 2026
24AQI (US)
13th March 2026
46AQI (US)
14th March 2026
50AQI (US)
15th March 2026
66AQI (US)
16th March 2026
63AQI (US)
17th March 2026
55AQI (US)
18th March 2026
58AQI (US)
19th March 2026
31AQI (US)
20th March 2026
30AQI (US)
21st March 2026
45AQI (US)
22nd March 2026
55AQI (US)
23rd March 2026
57AQI (US)
24th March 2026
43AQI (US)
25th March 2026
49AQI (US)
26th March 2026
11AQI (US)
27th March 2026
18AQI (US)
28th March 2026
52AQI (US)
29th March 2026
45AQI (US)
30th March 2026
50AQI (US)
31st March 2026
18AQI (US)
1st April 2026
18AQI (US)
2nd April 2026
12AQI (US)
3rd April 2026
40AQI (US)
4th April 2026
44AQI (US)
5th April 2026
42AQI (US)
6th April 2026
36AQI (US)
7th April 2026
30AQI (US)
8th April 2026
25AQI (US)
9th April 2026
26AQI (US)
10th April 2026
46AQI (US)
11th April 2026
36AQI (US)
12th April 2026
38AQI (US)
13th April 2026
38AQI (US)
14th April 2026
49AQI (US)
15th April 2026
43AQI (US)
16th April 2026
36AQI (US)
17th April 2026
40AQI (US)
18th April 2026
35AQI (US)
19th April 2026
41AQI (US)
20th April 2026
38AQI (US)
21st April 2026
38AQI (US)
22nd April 2026
35AQI (US)
23rd April 2026
25AQI (US)
24th April 2026
19AQI (US)
25th April 2026
35AQI (US)
26th April 2026
53AQI (US)
27th April 2026
49AQI (US)
28th April 2026
44AQI (US)
29th April 2026
51AQI (US)
30th April 2026
29AQI (US)
1st May 2026
16AQI (US)
2nd May 2026
49AQI (US)
3rd May 2026
33AQI (US)
4th May 2026
30AQI (US)
5th May 2026
22AQI (US)
6th May 2026
38AQI (US)
7th May 2026
24AQI (US)
8th May 2026
28AQI (US)
9th May 2026
27AQI (US)
10th May 2026
35AQI (US)
11th May 2026
38AQI (US)
12th May 2026
41AQI (US)
13th May 2026
46AQI (US)
14th May 2026
40AQI (US)
15th May 2026
40AQI (US)
16th May 2026
85AQI (US)
17th May 2026
69AQI (US)
18th May 2026
53AQI (US)
19th May 2026
49AQI (US)
20th May 2026
62AQI (US)
21st May 2026
59AQI (US)
22nd May 2026
61AQI (US)
23rd May 2026
53AQI (US)
24th May 2026
59AQI (US)
25th May 2026
47AQI (US)
26th May 2026
40AQI (US)
27th May 2026
28AQI (US)
28th May 2026
26AQI (US)
29th May 2026
26AQI (US)
30th May 2026
26AQI (US)
31st May 2026
29AQI (US)
1st June 2026
32AQI (US)
2nd June 2026
35AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
18AQI (US)
5th June 2026
23AQI (US)
6th June 2026
25AQI (US)
7th June 2026
21AQI (US)
8th June 2026
15AQI (US)
9th June 2026
16AQI (US)
10th June 2026
23AQI (US)
11th June 2026
26AQI (US)
12th June 2026
26AQI (US)
13th June 2026
30AQI (US)
14th June 2026
27AQI (US)
15th June 2026
21AQI (US)
16th June 2026
20AQI (US)
17th June 2026
26AQI (US)
18th June 2026
29AQI (US)
19th June 2026
36AQI (US)
20th June 2026
35AQI (US)
21st June 2026
23AQI (US)
22nd June 2026
28AQI (US)
23rd June 2026
18AQI (US)
24th June 2026
19AQI (US)
25th June 2026
25AQI (US)
26th June 2026
27AQI (US)
27th June 2026
24AQI (US)
28th June 2026
28AQI (US)
29th June 2026
29AQI (US)
30th June 2026
38AQI (US)
1st July 2026
48AQI (US)
2nd July 2026
23AQI (US)
3rd July 2026
16AQI (US)
4th July 2026
25AQI (US)
5th July 2026
21AQI (US)
6th July 2026
23AQI (US)
7th July 2026
24AQI (US)
8th July 2026
25AQI (US)
9th July 2026
27AQI (US)
10th July 2026
30AQI (US)
11th July 2026
25AQI (US)
12th July 2026
25AQI (US)
13th July 2026
36AQI (US)
14th July 2026
50AQI (US)
15th July 2026
60AQI (US)
16th July 2026
64AQI (US)
17th July 2026
56AQI (US)
18th July 2026
34AQI (US)
19th July 2026
32AQI (US)
20th July 2026
40AQI (US)
21st July 2026
46AQI (US)
22nd July 2026
61AQI (US)
23rd July 2026
69AQI (US)
24th July 2026
67AQI (US)
25th July 2026
56AQI (US)
26th July 2026
37AQI (US)
27th July 2026
36AQI (US)
28th July 2026
34AQI (US)
29th July 2026
37AQI (US)
30th July 2026
41AQI (US)
31st July 2026
46AQI (US)
1st August 2026
52AQI (US)
2nd August 2026
42AQI (US)
3rd August 2026
22AQI (US)
4th August 2026
24AQI (US)
5th August 2026
37AQI (US)
6th August 2026
39AQI (US)
7th August 2026
43AQI (US)
8th August 2026
34AQI (US)
9th August 2026
28AQI (US)
10th August 2026
33AQI (US)
11th August 2026
42AQI (US)
12th August 2026
26AQI (US)
13th August 2026
31AQI (US)
14th August 2026
35AQI (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)

36AQI (US)

41AQI (US)

25AQI (US)

39AQI (US)

35AQI (US)

No. of days

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

202637AQI (US)

29
2
24
4
18
13
28
2
23
8
30
24
7
13
1
189
37

Highest AQI (US) recorded in

March

46AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202540AQI (US)

28
3
26
2
22
9
30
31
29
1
21
10
25
6
30
13
18
24
6
22
9
301
64

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

April

24AQI (US)

202442AQI (US)

14
2
1
1
1
9
3
29
1
22
9
11
20
21
8
28
3
29
1
28
3
193
51

Highest AQI (US) recorded in

April

51AQI (US)

Lowest AQI (US) recorded in

March

17AQI (US)

202346AQI (US)

3
21
10
24
10

Highest AQI (US) recorded in

December

47AQI (US)

Lowest AQI (US) recorded in

November

35AQI (US)

202020AQI (US)

1
1

Highest AQI (US) recorded in

September

20AQI (US)

Lowest AQI (US) recorded in

September

20AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2023(Avg.)
46AQI (US)
Least Polluted Year Recorded
2020(Avg.)
20AQI (US)

Marunouchi's annual 2026 AQI (US) (37) shows an average percentage change of 11.5% (worsened AQI (US)) compared to previous years: 2020 (20), 2023 (46), 2024 (42), 2025 (40).