Otsu, Shiga, 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
Otsu, Shiga, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Aug 2021
61AQILowest AQI recorded on
27th Aug 2024
18AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 43 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Otsu, Shiga, Japan
AQI
Day
Night
.
4 AM2nd Aug 2025
7 PM
3 AM3rd Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
2PM2nd Aug
62AQI
Avg. Lowest Time
4AM2nd Aug
37AQI
In the last 24 hours,
Otsu's AQI reached its highest point of 62 at 2 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Otsu, Shiga, Japan
JulAug
04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025774 AMAQI
4th Jul 2025775 AMAQI
4th Jul 2025776 AMAQI
4th Jul 2025787 AMAQI
4th Jul 2025788 AMAQI
4th Jul 2025769 AMAQI
4th Jul 20257810 AMAQI
4th Jul 20258511 AMAQI
4th Jul 20258812 PMAQI
4th Jul 2025941 PMAQI
4th Jul 2025992 PMAQI
4th Jul 2025993 PMAQI
4th Jul 2025984 PMAQI
4th Jul 20251025 PMAQI
4th Jul 20251046 PMAQI
4th Jul 20251087 PMAQI
4th Jul 20251198 PMAQI
4th Jul 2025949 PMAQI
4th Jul 20259410 PMAQI
4th Jul 20259311 PMAQI
5th Jul 20259312 AMAQI
5th Jul 2025861 AMAQI
5th Jul 2025792 AMAQI
5th Jul 2025793 AMAQI
28°C23/34°C
5th Jul 2025804 AMAQI
5th Jul 2025825 AMAQI
5th Jul 2025826 AMAQI
5th Jul 2025817 AMAQI
5th Jul 2025818 AMAQI
5th Jul 20251019 AMAQI
5th Jul 202511010 AMAQI
5th Jul 202511511 AMAQI
5th Jul 202511512 PMAQI
5th Jul 20251121 PMAQI
5th Jul 20251052 PMAQI
5th Jul 20251043 PMAQI
5th Jul 20251044 PMAQI
5th Jul 20251085 PMAQI
5th Jul 20251066 PMAQI
5th Jul 2025897 PMAQI
5th Jul 2025858 PMAQI
5th Jul 2025829 PMAQI
5th Jul 20258010 PMAQI
5th Jul 20258111 PMAQI
6th Jul 20258112 AMAQI
6th Jul 2025811 AMAQI
6th Jul 2025852 AMAQI
6th Jul 2025853 AMAQI
28°C24/33°C
6th Jul 2025864 AMAQI
6th Jul 2025895 AMAQI
6th Jul 2025896 AMAQI
6th Jul 2025907 AMAQI
6th Jul 2025898 AMAQI
6th Jul 2025799 AMAQI
6th Jul 20257910 AMAQI
6th Jul 20258811 AMAQI
6th Jul 20259012 PMAQI
6th Jul 2025851 PMAQI
6th Jul 2025822 PMAQI
6th Jul 2025823 PMAQI
6th Jul 2025804 PMAQI
6th Jul 2025765 PMAQI
6th Jul 2025736 PMAQI
6th Jul 2025707 PMAQI
6th Jul 2025718 PMAQI
6th Jul 2025779 PMAQI
6th Jul 20257610 PMAQI
6th Jul 20257611 PMAQI
7th Jul 20257512 AMAQI
7th Jul 2025771 AMAQI
7th Jul 2025832 AMAQI
7th Jul 2025853 AMAQI
28°C23/35°C
7th Jul 2025844 AMAQI
7th Jul 2025845 AMAQI
7th Jul 2025846 AMAQI
7th Jul 2025837 AMAQI
7th Jul 2025848 AMAQI
7th Jul 2025599 AMAQI
7th Jul 20254910 AMAQI
7th Jul 20255111 AMAQI
7th Jul 20255112 PMAQI
7th Jul 2025591 PMAQI
7th Jul 2025592 PMAQI
7th Jul 2025603 PMAQI
7th Jul 2025594 PMAQI
7th Jul 2025595 PMAQI
7th Jul 2025606 PMAQI
7th Jul 2025627 PMAQI
7th Jul 2025658 PMAQI
7th Jul 2025759 PMAQI
7th Jul 20257410 PMAQI
7th Jul 20257411 PMAQI
8th Jul 20257312 AMAQI
8th Jul 2025761 AMAQI
8th Jul 2025802 AMAQI
8th Jul 2025803 AMAQI
29°C24/35°C
8th Jul 2025804 AMAQI
8th Jul 2025765 AMAQI
8th Jul 2025766 AMAQI
8th Jul 2025777 AMAQI
8th Jul 2025768 AMAQI
8th Jul 2025749 AMAQI
8th Jul 20257810 AMAQI
8th Jul 20258111 AMAQI
8th Jul 20257912 PMAQI
8th Jul 2025771 PMAQI
8th Jul 2025772 PMAQI
8th Jul 2025763 PMAQI
8th Jul 2025754 PMAQI
8th Jul 2025765 PMAQI
8th Jul 2025786 PMAQI
8th Jul 2025757 PMAQI
8th Jul 2025728 PMAQI
8th Jul 2025759 PMAQI
8th Jul 20257510 PMAQI
8th Jul 20257511 PMAQI
9th Jul 20257512 AMAQI
9th Jul 2025761 AMAQI
9th Jul 2025752 AMAQI
9th Jul 2025763 AMAQI
28°C24/34°C
9th Jul 2025754 AMAQI
9th Jul 2025755 AMAQI
9th Jul 2025756 AMAQI
9th Jul 2025757 AMAQI
9th Jul 2025768 AMAQI
9th Jul 2025969 AMAQI
9th Jul 20259610 AMAQI
9th Jul 20259311 AMAQI
9th Jul 20259412 PMAQI
9th Jul 2025901 PMAQI
9th Jul 2025892 PMAQI
9th Jul 2025913 PMAQI
9th Jul 2025934 PMAQI
9th Jul 2025905 PMAQI
9th Jul 2025896 PMAQI
9th Jul 2025917 PMAQI
9th Jul 2025888 PMAQI
9th Jul 2025809 PMAQI
9th Jul 20257910 PMAQI
9th Jul 20257911 PMAQI
10th Jul 20257812 AMAQI
10th Jul 2025771 AMAQI
10th Jul 2025742 AMAQI
10th Jul 2025743 AMAQI
28°C24/34°C
10th Jul 2025754 AMAQI
10th Jul 2025765 AMAQI
10th Jul 2025766 AMAQI
10th Jul 2025767 AMAQI
10th Jul 2025768 AMAQI
10th Jul 2025679 AMAQI
10th Jul 20257010 AMAQI
10th Jul 20256911 AMAQI
10th Jul 20256412 PMAQI
10th Jul 2025671 PMAQI
10th Jul 2025652 PMAQI
10th Jul 2025613 PMAQI
10th Jul 2025604 PMAQI
10th Jul 2025605 PMAQI
10th Jul 2025576 PMAQI
10th Jul 2025547 PMAQI
10th Jul 2025568 PMAQI
10th Jul 2025709 PMAQI
10th Jul 20256810 PMAQI
10th Jul 20256811 PMAQI
11th Jul 20256812 AMAQI
11th Jul 2025701 AMAQI
11th Jul 2025752 AMAQI
11th Jul 2025753 AMAQI
29°C24/35°C
11th Jul 2025754 AMAQI
11th Jul 2025745 AMAQI
11th Jul 2025756 AMAQI
11th Jul 2025747 AMAQI
11th Jul 2025758 AMAQI
11th Jul 2025329 AMAQI
11th Jul 20252410 AMAQI
11th Jul 20252311 AMAQI
11th Jul 20252812 PMAQI
11th Jul 2025491 PMAQI
11th Jul 2025492 PMAQI
11th Jul 2025493 PMAQI
11th Jul 2025484 PMAQI
11th Jul 2025455 PMAQI
11th Jul 2025456 PMAQI
11th Jul 2025457 PMAQI
11th Jul 2025498 PMAQI
11th Jul 2025639 PMAQI
11th Jul 20256310 PMAQI
11th Jul 20256311 PMAQI
12th Jul 20256412 AMAQI
12th Jul 2025651 AMAQI
12th Jul 2025712 AMAQI
12th Jul 2025713 AMAQI
28°C25/33°C
12th Jul 2025704 AMAQI
12th Jul 2025675 AMAQI
12th Jul 2025686 AMAQI
12th Jul 2025687 AMAQI
12th Jul 2025688 AMAQI
12th Jul 2025429 AMAQI
12th Jul 20253410 AMAQI
12th Jul 20253611 AMAQI
12th Jul 20253912 PMAQI
12th Jul 2025471 PMAQI
12th Jul 2025482 PMAQI
12th Jul 2025503 PMAQI
12th Jul 2025484 PMAQI
12th Jul 2025485 PMAQI
12th Jul 2025486 PMAQI
12th Jul 2025497 PMAQI
12th Jul 2025528 PMAQI
12th Jul 2025619 PMAQI
12th Jul 20256110 PMAQI
12th Jul 20256111 PMAQI
13th Jul 20256112 AMAQI
13th Jul 2025631 AMAQI
13th Jul 2025662 AMAQI
13th Jul 2025663 AMAQI
28°C24/34°C
13th Jul 2025664 AMAQI
13th Jul 2025645 AMAQI
13th Jul 2025646 AMAQI
13th Jul 2025647 AMAQI
13th Jul 2025648 AMAQI
13th Jul 2025489 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20253711 AMAQI
13th Jul 20253812 PMAQI
13th Jul 2025481 PMAQI
13th Jul 2025472 PMAQI
13th Jul 2025463 PMAQI
13th Jul 2025474 PMAQI
13th Jul 2025475 PMAQI
13th Jul 2025516 PMAQI
13th Jul 2025497 PMAQI
13th Jul 2025518 PMAQI
13th Jul 2025589 PMAQI
13th Jul 20255810 PMAQI
13th Jul 20255711 PMAQI
14th Jul 20255812 AMAQI
14th Jul 2025601 AMAQI
14th Jul 2025632 AMAQI
14th Jul 2025633 AMAQI
27°C24/32°C
14th Jul 2025624 AMAQI
14th Jul 2025615 AMAQI
14th Jul 2025616 AMAQI
14th Jul 2025617 AMAQI
14th Jul 2025618 AMAQI
14th Jul 2025279 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251711 AMAQI
14th Jul 20251812 PMAQI
14th Jul 2025311 PMAQI
14th Jul 2025312 PMAQI
14th Jul 2025313 PMAQI
14th Jul 2025314 PMAQI
14th Jul 2025305 PMAQI
14th Jul 2025306 PMAQI
14th Jul 2025317 PMAQI
14th Jul 2025368 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255410 PMAQI
14th Jul 20255411 PMAQI
15th Jul 20255412 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025582 AMAQI
15th Jul 2025593 AMAQI
27°C24/33°C
15th Jul 2025594 AMAQI
15th Jul 2025575 AMAQI
15th Jul 2025576 AMAQI
15th Jul 2025577 AMAQI
15th Jul 2025578 AMAQI
15th Jul 2025389 AMAQI
15th Jul 20253110 AMAQI
15th Jul 20253211 AMAQI
15th Jul 20253612 PMAQI
15th Jul 2025461 PMAQI
15th Jul 2025452 PMAQI
15th Jul 2025473 PMAQI
15th Jul 2025484 PMAQI
15th Jul 2025525 PMAQI
15th Jul 2025526 PMAQI
15th Jul 2025527 PMAQI
15th Jul 2025558 PMAQI
15th Jul 2025579 PMAQI
15th Jul 20255810 PMAQI
15th Jul 20255711 PMAQI
16th Jul 20255812 AMAQI
16th Jul 2025571 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
28°C24/34°C
16th Jul 2025564 AMAQI
16th Jul 2025555 AMAQI
16th Jul 2025556 AMAQI
16th Jul 2025557 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025559 AMAQI
16th Jul 20255310 AMAQI
16th Jul 20255311 AMAQI
16th Jul 20255512 PMAQI
16th Jul 2025551 PMAQI
16th Jul 2025492 PMAQI
16th Jul 2025523 PMAQI
16th Jul 2025544 PMAQI
16th Jul 2025535 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025407 PMAQI
16th Jul 2025448 PMAQI
16th Jul 2025529 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255411 PMAQI
17th Jul 20255312 AMAQI
17th Jul 2025521 AMAQI
17th Jul 2025562 AMAQI
17th Jul 2025573 AMAQI
26°C23/30°C
17th Jul 2025564 AMAQI
17th Jul 2025565 AMAQI
17th Jul 2025556 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025299 AMAQI
17th Jul 20251810 AMAQI
17th Jul 20252511 AMAQI
17th Jul 20251612 PMAQI
17th Jul 2025291 PMAQI
17th Jul 2025292 PMAQI
17th Jul 2025283 PMAQI
17th Jul 2025284 PMAQI
17th Jul 2025265 PMAQI
17th Jul 2025256 PMAQI
17th Jul 2025267 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254910 PMAQI
17th Jul 20254911 PMAQI
18th Jul 20255012 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025542 AMAQI
18th Jul 2025553 AMAQI
24°C23/26°C
18th Jul 2025544 AMAQI
18th Jul 2025535 AMAQI
18th Jul 2025536 AMAQI
18th Jul 2025537 AMAQI
18th Jul 2025538 AMAQI
18th Jul 2025329 AMAQI
18th Jul 20252710 AMAQI
18th Jul 20252611 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025331 PMAQI
18th Jul 2025342 PMAQI
18th Jul 2025333 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025335 PMAQI
18th Jul 2025356 PMAQI
18th Jul 2025337 PMAQI
18th Jul 2025418 PMAQI
18th Jul 2025469 PMAQI
18th Jul 20254710 PMAQI
18th Jul 20254711 PMAQI
19th Jul 20254712 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025522 AMAQI
19th Jul 2025523 AMAQI
26°C22/30°C
19th Jul 2025514 AMAQI
19th Jul 2025505 AMAQI
19th Jul 2025506 AMAQI
19th Jul 2025507 AMAQI
19th Jul 2025508 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252111 AMAQI
19th Jul 20252112 PMAQI
19th Jul 2025261 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025273 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025246 PMAQI
19th Jul 2025277 PMAQI
19th Jul 2025328 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20253910 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253912 AMAQI
20th Jul 2025421 AMAQI
20th Jul 2025492 AMAQI
20th Jul 2025503 AMAQI
27°C22/32°C
20th Jul 2025484 AMAQI
20th Jul 2025465 AMAQI
20th Jul 2025466 AMAQI
20th Jul 2025467 AMAQI
20th Jul 2025478 AMAQI
20th Jul 2025349 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252411 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025251 PMAQI
20th Jul 2025222 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025234 PMAQI
20th Jul 2025255 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253510 PMAQI
20th Jul 20253511 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025371 AMAQI
21st Jul 2025452 AMAQI
21st Jul 2025453 AMAQI
27°C23/33°C
21st Jul 2025444 AMAQI
21st Jul 2025415 AMAQI
21st Jul 2025416 AMAQI
21st Jul 2025417 AMAQI
21st Jul 2025418 AMAQI
21st Jul 2025289 AMAQI
21st Jul 20252510 AMAQI
21st Jul 20252611 AMAQI
21st Jul 20252712 PMAQI
21st Jul 2025311 PMAQI
21st Jul 2025312 PMAQI
21st Jul 2025323 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025286 PMAQI
21st Jul 2025257 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025329 PMAQI
21st Jul 20253410 PMAQI
21st Jul 20253411 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025331 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025403 AMAQI
28°C24/34°C
22nd Jul 2025394 AMAQI
22nd Jul 2025385 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252410 AMAQI
22nd Jul 20252411 AMAQI
22nd Jul 20253012 PMAQI
22nd Jul 2025351 PMAQI
22nd Jul 2025372 PMAQI
22nd Jul 2025373 PMAQI
22nd Jul 2025374 PMAQI
22nd Jul 2025395 PMAQI
22nd Jul 2025406 PMAQI
22nd Jul 2025517 PMAQI
22nd Jul 2025498 PMAQI
22nd Jul 2025399 PMAQI
22nd Jul 20253210 PMAQI
22nd Jul 20253111 PMAQI
23rd Jul 20253412 AMAQI
23rd Jul 2025351 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025373 AMAQI
29°C24/35°C
23rd Jul 2025374 AMAQI
23rd Jul 2025365 AMAQI
23rd Jul 2025366 AMAQI
23rd Jul 2025367 AMAQI
23rd Jul 2025368 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20252810 AMAQI
23rd Jul 20253311 AMAQI
23rd Jul 20254312 PMAQI
23rd Jul 2025461 PMAQI
23rd Jul 2025502 PMAQI
23rd Jul 2025503 PMAQI
23rd Jul 2025514 PMAQI
23rd Jul 2025535 PMAQI
23rd Jul 2025546 PMAQI
23rd Jul 2025567 PMAQI
23rd Jul 2025528 PMAQI
23rd Jul 2025459 PMAQI
23rd Jul 20254210 PMAQI
23rd Jul 20253811 PMAQI
24th Jul 20253312 AMAQI
24th Jul 2025341 AMAQI
24th Jul 2025362 AMAQI
24th Jul 2025363 AMAQI
30°C25/35°C
24th Jul 2025374 AMAQI
24th Jul 2025385 AMAQI
24th Jul 2025386 AMAQI
24th Jul 2025387 AMAQI
24th Jul 2025388 AMAQI
24th Jul 2025279 AMAQI
24th Jul 20252710 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20254012 PMAQI
24th Jul 2025461 PMAQI
24th Jul 2025482 PMAQI
24th Jul 2025503 PMAQI
24th Jul 2025504 PMAQI
24th Jul 2025535 PMAQI
24th Jul 2025536 PMAQI
24th Jul 2025487 PMAQI
24th Jul 2025328 PMAQI
24th Jul 2025319 PMAQI
24th Jul 20253010 PMAQI
24th Jul 20252811 PMAQI
25th Jul 20252712 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025372 AMAQI
25th Jul 2025373 AMAQI
30°C25/36°C
25th Jul 2025374 AMAQI
25th Jul 2025385 AMAQI
25th Jul 2025386 AMAQI
25th Jul 2025387 AMAQI
25th Jul 2025388 AMAQI
25th Jul 2025329 AMAQI
25th Jul 20253910 AMAQI
25th Jul 20254311 AMAQI
25th Jul 20254112 PMAQI
25th Jul 2025361 PMAQI
25th Jul 2025342 PMAQI
25th Jul 2025403 PMAQI
25th Jul 2025414 PMAQI
25th Jul 2025395 PMAQI
25th Jul 2025346 PMAQI
25th Jul 2025277 PMAQI
25th Jul 2025338 PMAQI
25th Jul 2025349 PMAQI
25th Jul 20253210 PMAQI
25th Jul 20253111 PMAQI
26th Jul 20253112 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025352 AMAQI
26th Jul 2025353 AMAQI
30°C25/35°C
26th Jul 2025364 AMAQI
26th Jul 2025365 AMAQI
26th Jul 2025376 AMAQI
26th Jul 2025377 AMAQI
26th Jul 2025378 AMAQI
26th Jul 2025239 AMAQI
26th Jul 20251910 AMAQI
26th Jul 20252311 AMAQI
26th Jul 20252012 PMAQI
26th Jul 2025201 PMAQI
26th Jul 2025202 PMAQI
26th Jul 2025233 PMAQI
26th Jul 2025264 PMAQI
26th Jul 2025295 PMAQI
26th Jul 2025326 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025318 PMAQI
26th Jul 2025319 PMAQI
26th Jul 20253110 PMAQI
26th Jul 20253011 PMAQI
27th Jul 20253012 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025342 AMAQI
27th Jul 2025343 AMAQI
29°C25/35°C
27th Jul 2025334 AMAQI
27th Jul 2025315 AMAQI
27th Jul 2025326 AMAQI
27th Jul 2025327 AMAQI
27th Jul 2025318 AMAQI
27th Jul 2025279 AMAQI
27th Jul 20252410 AMAQI
27th Jul 20252911 AMAQI
27th Jul 20252612 PMAQI
27th Jul 2025261 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025263 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025275 PMAQI
27th Jul 2025276 PMAQI
27th Jul 2025257 PMAQI
27th Jul 2025268 PMAQI
27th Jul 2025269 PMAQI
27th Jul 20252510 PMAQI
27th Jul 20252511 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025281 AMAQI
28th Jul 2025322 AMAQI
28th Jul 2025323 AMAQI
29°C24/36°C
28th Jul 2025314 AMAQI
28th Jul 2025305 AMAQI
28th Jul 2025316 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025318 AMAQI
28th Jul 2025269 AMAQI
28th Jul 20252610 AMAQI
28th Jul 20252711 AMAQI
28th Jul 20252912 PMAQI
28th Jul 2025321 PMAQI
28th Jul 2025282 PMAQI
28th Jul 2025253 PMAQI
28th Jul 2025244 PMAQI
28th Jul 2025255 PMAQI
28th Jul 2025266 PMAQI
28th Jul 2025307 PMAQI
28th Jul 2025358 PMAQI
28th Jul 2025339 PMAQI
28th Jul 20253310 PMAQI
28th Jul 20253311 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025302 AMAQI
29th Jul 2025303 AMAQI
30°C25/36°C
29th Jul 2025304 AMAQI
29th Jul 2025295 AMAQI
29th Jul 2025306 AMAQI
29th Jul 2025297 AMAQI
29th Jul 2025298 AMAQI
29th Jul 2025289 AMAQI
29th Jul 20253510 AMAQI
29th Jul 20254511 AMAQI
29th Jul 20254612 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025453 PMAQI
29th Jul 2025484 PMAQI
29th Jul 2025515 PMAQI
29th Jul 2025516 PMAQI
29th Jul 2025517 PMAQI
29th Jul 2025488 PMAQI
29th Jul 2025399 PMAQI
29th Jul 20254010 PMAQI
29th Jul 20253811 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025311 AMAQI
30th Jul 2025302 AMAQI
30th Jul 2025303 AMAQI
31°C26/37°C
30th Jul 2025314 AMAQI
30th Jul 2025325 AMAQI
30th Jul 2025326 AMAQI
30th Jul 2025327 AMAQI
30th Jul 2025328 AMAQI
30th Jul 2025399 AMAQI
30th Jul 20254210 AMAQI
30th Jul 20254111 AMAQI
30th Jul 20254812 PMAQI
30th Jul 2025501 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025533 PMAQI
30th Jul 2025484 PMAQI
30th Jul 2025505 PMAQI
30th Jul 2025536 PMAQI
30th Jul 2025567 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025419 PMAQI
30th Jul 20253610 PMAQI
30th Jul 20253611 PMAQI
31st Jul 20253612 AMAQI
31st Jul 2025351 AMAQI
31st Jul 2025332 AMAQI
31st Jul 2025323 AMAQI
31°C26/37°C
31st Jul 2025324 AMAQI
31st Jul 2025325 AMAQI
31st Jul 2025326 AMAQI
31st Jul 2025327 AMAQI
31st Jul 2025328 AMAQI
31st Jul 2025329 AMAQI
31st Jul 20253210 AMAQI
31st Jul 20254411 AMAQI
31st Jul 20254712 PMAQI
31st Jul 2025521 PMAQI
31st Jul 2025572 PMAQI
31st Jul 2025563 PMAQI
31st Jul 2025544 PMAQI
31st Jul 2025555 PMAQI
31st Jul 2025546 PMAQI
31st Jul 2025557 PMAQI
31st Jul 2025468 PMAQI
31st Jul 2025379 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253411 PMAQI
1st Aug 20253312 AMAQI
1st Aug 2025351 AMAQI
1st Aug 2025302 AMAQI
1st Aug 2025303 AMAQI
31°C26/37°C
1st Aug 2025334 AMAQI
1st Aug 2025335 AMAQI
1st Aug 2025346 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025368 AMAQI
1st Aug 2025459 AMAQI
1st Aug 20254510 AMAQI
1st Aug 20255111 AMAQI
1st Aug 20255412 PMAQI
1st Aug 2025541 PMAQI
1st Aug 2025592 PMAQI
1st Aug 2025603 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025606 PMAQI
1st Aug 2025577 PMAQI
1st Aug 2025548 PMAQI
1st Aug 2025499 PMAQI
1st Aug 20254310 PMAQI
1st Aug 20254211 PMAQI
2nd Aug 20254012 AMAQI
2nd Aug 2025361 AMAQI
2nd Aug 2025352 AMAQI
2nd Aug 2025343 AMAQI
30°C26/35°C
2nd Aug 2025374 AMAQI
2nd Aug 2025385 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025549 AMAQI
2nd Aug 20255710 AMAQI
2nd Aug 20255811 AMAQI
2nd Aug 20255812 PMAQI
2nd Aug 2025611 PMAQI
2nd Aug 2025622 PMAQI
2nd Aug 2025613 PMAQI
2nd Aug 2025574 PMAQI
2nd Aug 2025615 PMAQI
2nd Aug 2025626 PMAQI
2nd Aug 2025577 PMAQI
2nd Aug 2025508 PMAQI
2nd Aug 2025429 PMAQI
2nd Aug 20254110 PMAQI
2nd Aug 20254311 PMAQI
3rd Aug 20254812 AMAQI
--°C/°C
4 AM
11 AM
7 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
53AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
9 AM - 10 AM
43AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 53), while the lowest AQI was between 9 AM to 10 AM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 3 AM
53AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM - 11 PM
51AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 53), while the lowest AQI was between 8 PM to 11 PM (Avg. 51).
2025 Days Vs Air Quality
Otsu, Shiga, Japan
2025
72%
154
28%
59
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
154 DaysModerate
59 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 72%
Health Risk Level:
Low
In 2025, 72% of 214 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
Otsu, Shiga, 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
32AQI
32AQI
2nd January 2025
41AQI
41AQI
3rd January 2025
32AQI
32AQI
4th January 2025
32AQI
32AQI
5th January 2025
32AQI
32AQI
6th January 2025
38AQI
38AQI
7th January 2025
36AQI
36AQI
8th January 2025
33AQI
33AQI
9th January 2025
32AQI
32AQI
10th January 2025
26AQI
26AQI
11th January 2025
26AQI
26AQI
12th January 2025
37AQI
37AQI
13th January 2025
32AQI
32AQI
14th January 2025
51AQI
51AQI
15th January 2025
44AQI
44AQI
16th January 2025
48AQI
48AQI
17th January 2025
38AQI
38AQI
18th January 2025
36AQI
36AQI
19th January 2025
37AQI
37AQI
20th January 2025
43AQI
43AQI
21st January 2025
38AQI
38AQI
22nd January 2025
49AQI
49AQI
23rd January 2025
64AQI
64AQI
24th January 2025
58AQI
58AQI
25th January 2025
44AQI
44AQI
26th January 2025
38AQI
38AQI
27th January 2025
36AQI
36AQI
28th January 2025
36AQI
36AQI
29th January 2025
31AQI
31AQI
30th January 2025
39AQI
39AQI
31st January 2025
76AQI
76AQI
1st February 2025
71AQI
71AQI
2nd February 2025
47AQI
47AQI
3rd February 2025
53AQI
53AQI
4th February 2025
40AQI
40AQI
5th February 2025
39AQI
39AQI
6th February 2025
33AQI
33AQI
7th February 2025
37AQI
37AQI
8th February 2025
29AQI
29AQI
9th February 2025
31AQI
31AQI
10th February 2025
30AQI
30AQI
11th February 2025
29AQI
29AQI
12th February 2025
33AQI
33AQI
13th February 2025
30AQI
30AQI
14th February 2025
36AQI
36AQI
15th February 2025
28AQI
28AQI
16th February 2025
42AQI
42AQI
17th February 2025
36AQI
36AQI
18th February 2025
34AQI
34AQI
19th February 2025
30AQI
30AQI
20th February 2025
28AQI
28AQI
21st February 2025
28AQI
28AQI
22nd February 2025
30AQI
30AQI
23rd February 2025
30AQI
30AQI
24th February 2025
31AQI
31AQI
25th February 2025
37AQI
37AQI
26th February 2025
42AQI
42AQI
27th February 2025
55AQI
55AQI
28th February 2025
58AQI
58AQI
1st March 2025
62AQI
62AQI
2nd March 2025
71AQI
71AQI
3rd March 2025
44AQI
44AQI
4th March 2025
42AQI
42AQI
5th March 2025
29AQI
29AQI
6th March 2025
37AQI
37AQI
7th March 2025
32AQI
32AQI
8th March 2025
38AQI
38AQI
9th March 2025
37AQI
37AQI
10th March 2025
41AQI
41AQI
11th March 2025
33AQI
33AQI
12th March 2025
33AQI
33AQI
13th March 2025
48AQI
48AQI
14th March 2025
40AQI
40AQI
15th March 2025
37AQI
37AQI
16th March 2025
24AQI
24AQI
17th March 2025
28AQI
28AQI
18th March 2025
27AQI
27AQI
19th March 2025
27AQI
27AQI
20th March 2025
44AQI
44AQI
21st March 2025
55AQI
55AQI
22nd March 2025
63AQI
63AQI
23rd March 2025
72AQI
72AQI
24th March 2025
74AQI
74AQI
25th March 2025
74AQI
74AQI
26th March 2025
85AQI
85AQI
27th March 2025
83AQI
83AQI
28th March 2025
50AQI
50AQI
29th March 2025
47AQI
47AQI
30th March 2025
33AQI
33AQI
31st March 2025
37AQI
37AQI
1st April 2025
31AQI
31AQI
2nd April 2025
30AQI
30AQI
3rd April 2025
23AQI
23AQI
4th April 2025
26AQI
26AQI
5th April 2025
40AQI
40AQI
6th April 2025
40AQI
40AQI
7th April 2025
48AQI
48AQI
8th April 2025
48AQI
48AQI
9th April 2025
46AQI
46AQI
10th April 2025
54AQI
54AQI
11th April 2025
53AQI
53AQI
12th April 2025
52AQI
52AQI
13th April 2025
32AQI
32AQI
14th April 2025
49AQI
49AQI
15th April 2025
26AQI
26AQI
16th April 2025
48AQI
48AQI
17th April 2025
50AQI
50AQI
18th April 2025
61AQI
61AQI
19th April 2025
62AQI
62AQI
20th April 2025
54AQI
54AQI
21st April 2025
44AQI
44AQI
22nd April 2025
50AQI
50AQI
23rd April 2025
27AQI
27AQI
24th April 2025
26AQI
26AQI
25th April 2025
67AQI
67AQI
26th April 2025
55AQI
55AQI
27th April 2025
63AQI
63AQI
28th April 2025
49AQI
49AQI
29th April 2025
57AQI
57AQI
30th April 2025
65AQI
65AQI
1st May 2025
57AQI
57AQI
2nd May 2025
42AQI
42AQI
3rd May 2025
48AQI
48AQI
4th May 2025
41AQI
41AQI
5th May 2025
45AQI
45AQI
6th May 2025
29AQI
29AQI
7th May 2025
31AQI
31AQI
8th May 2025
32AQI
32AQI
9th May 2025
36AQI
36AQI
10th May 2025
31AQI
31AQI
11th May 2025
35AQI
35AQI
12th May 2025
48AQI
48AQI
13th May 2025
54AQI
54AQI
14th May 2025
59AQI
59AQI
15th May 2025
55AQI
55AQI
16th May 2025
56AQI
56AQI
17th May 2025
43AQI
43AQI
18th May 2025
52AQI
52AQI
19th May 2025
54AQI
54AQI
20th May 2025
67AQI
67AQI
21st May 2025
49AQI
49AQI
22nd May 2025
37AQI
37AQI
23rd May 2025
54AQI
54AQI
24th May 2025
40AQI
40AQI
25th May 2025
28AQI
28AQI
26th May 2025
30AQI
30AQI
27th May 2025
31AQI
31AQI
28th May 2025
30AQI
30AQI
29th May 2025
41AQI
41AQI
30th May 2025
36AQI
36AQI
31st May 2025
36AQI
36AQI
1st June 2025
42AQI
42AQI
2nd June 2025
50AQI
50AQI
3rd June 2025
30AQI
30AQI
4th June 2025
46AQI
46AQI
5th June 2025
42AQI
42AQI
6th June 2025
46AQI
46AQI
7th June 2025
53AQI
53AQI
8th June 2025
66AQI
66AQI
9th June 2025
47AQI
47AQI
10th June 2025
30AQI
30AQI
11th June 2025
35AQI
35AQI
12th June 2025
42AQI
42AQI
13th June 2025
47AQI
47AQI
14th June 2025
35AQI
35AQI
15th June 2025
29AQI
29AQI
16th June 2025
39AQI
39AQI
17th June 2025
39AQI
39AQI
18th June 2025
49AQI
49AQI
19th June 2025
53AQI
53AQI
20th June 2025
56AQI
56AQI
21st June 2025
55AQI
55AQI
22nd June 2025
55AQI
55AQI
23rd June 2025
48AQI
48AQI
24th June 2025
43AQI
43AQI
25th June 2025
42AQI
42AQI
26th June 2025
41AQI
41AQI
27th June 2025
50AQI
50AQI
28th June 2025
45AQI
45AQI
29th June 2025
49AQI
49AQI
30th June 2025
55AQI
55AQI
1st July 2025
60AQI
60AQI
2nd July 2025
80AQI
80AQI
3rd July 2025
84AQI
84AQI
4th July 2025
89AQI
89AQI
5th July 2025
93AQI
93AQI
6th July 2025
82AQI
82AQI
7th July 2025
71AQI
71AQI
8th July 2025
76AQI
76AQI
9th July 2025
82AQI
82AQI
10th July 2025
69AQI
69AQI
11th July 2025
58AQI
58AQI
12th July 2025
58AQI
58AQI
13th July 2025
56AQI
56AQI
14th July 2025
46AQI
46AQI
15th July 2025
52AQI
52AQI
16th July 2025
53AQI
53AQI
17th July 2025
42AQI
42AQI
18th July 2025
44AQI
44AQI
19th July 2025
38AQI
38AQI
20th July 2025
35AQI
35AQI
21st July 2025
34AQI
34AQI
22nd July 2025
36AQI
36AQI
23rd July 2025
41AQI
41AQI
24th July 2025
38AQI
38AQI
25th July 2025
35AQI
35AQI
26th July 2025
30AQI
30AQI
27th July 2025
28AQI
28AQI
28th July 2025
29AQI
29AQI
29th July 2025
38AQI
38AQI
30th July 2025
40AQI
40AQI
31st July 2025
41AQI
41AQI
1st August 2025
43AQI
43AQI
40AQI
37AQI
47AQI
46AQI
43AQI
45AQI
53AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202545AQI
27
4
24
4
22
9
19
11
22
9
23
7
16
15
1
154
59
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
February37AQI
202438AQI
30
1
26
3
23
8
19
10
1
27
4
26
4
26
5
28
3
27
3
29
2
28
2
31
320
45
1
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
December32AQI
202342AQI
26
5
27
1
20
11
17
13
24
7
16
14
18
13
29
2
27
3
24
7
22
7
25
6
275
89
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
August34AQI
202242AQI
30
1
18
3
22
9
22
8
15
16
21
9
14
7
1
23
5
26
5
25
5
31
248
68
Highest AQI recorded in
May51AQI
Lowest AQI recorded in
December35AQI
202138AQI
27
4
20
8
25
6
27
3
25
6
25
5
27
4
25
6
25
5
30
1
23
7
28
3
307
58
Highest AQI recorded in
June46AQI
Lowest AQI recorded in
January33AQI
202038AQI
11
2
18
3
18
21
9
28
3
13
17
1
18
1
28
3
24
6
29
2
208
46
1
Highest AQI recorded in
August56AQI
Lowest AQI recorded in
December33AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
45AQILeast Polluted Year Recorded
2024(Avg.)
38AQIOtsu's annual 2025 AQI (45) shows an average percentage change of 12.8% (worsened AQI) compared to previous years: 2020 (38), 2021 (38), 2022 (42), 2023 (42), 2024 (38).
