Hiji, Oita, 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+
July Air Quality Analysis
Hiji, Oita, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Jul 2025
94AQILowest AQI recorded on
25th Jul 2021
16AQISame Day Analysis (30th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 26 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 31st Jul - 1st Aug 2025
Hiji, Oita, Japan
AQI
Day
Night
.
5 AM31st Jul 2025
7 PM
4 AM1st Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
5PM31st Jul
46AQI
Avg. Lowest Time
2PM31st Jul
22AQI
In the last 24 hours,
Hiji's AQI reached its highest point of 46 at 5 PM during the Night, while the lowest point, 22, was recorded at 2 PM during the Night between 31st Jul and 1st Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hiji, Oita, Japan
JulAug
02nd - 03rd03rd - 04th04th - 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
Day
Night
2nd Jul 2025555 AMAQI
2nd Jul 2025556 AMAQI
2nd Jul 2025547 AMAQI
2nd Jul 2025558 AMAQI
2nd Jul 2025729 AMAQI
2nd Jul 20257610 AMAQI
2nd Jul 20257211 AMAQI
2nd Jul 20258412 PMAQI
2nd Jul 2025901 PMAQI
2nd Jul 2025742 PMAQI
2nd Jul 2025743 PMAQI
2nd Jul 2025754 PMAQI
2nd Jul 2025685 PMAQI
2nd Jul 2025766 PMAQI
2nd Jul 2025907 PMAQI
2nd Jul 2025998 PMAQI
2nd Jul 2025979 PMAQI
2nd Jul 20259710 PMAQI
2nd Jul 20259711 PMAQI
3rd Jul 20259712 AMAQI
3rd Jul 2025971 AMAQI
3rd Jul 2025662 AMAQI
3rd Jul 2025553 AMAQI
3rd Jul 2025554 AMAQI
27°C23/31°C
3rd Jul 2025555 AMAQI
3rd Jul 2025556 AMAQI
3rd Jul 2025557 AMAQI
3rd Jul 2025558 AMAQI
3rd Jul 2025829 AMAQI
3rd Jul 202510810 AMAQI
3rd Jul 202511011 AMAQI
3rd Jul 202511012 PMAQI
3rd Jul 20251101 PMAQI
3rd Jul 20251102 PMAQI
3rd Jul 20251103 PMAQI
3rd Jul 20251104 PMAQI
3rd Jul 20251105 PMAQI
3rd Jul 20251046 PMAQI
3rd Jul 20251247 PMAQI
3rd Jul 20251068 PMAQI
3rd Jul 2025879 PMAQI
3rd Jul 20259110 PMAQI
3rd Jul 20259711 PMAQI
4th Jul 202510012 AMAQI
4th Jul 2025821 AMAQI
4th Jul 2025692 AMAQI
4th Jul 2025693 AMAQI
4th Jul 2025704 AMAQI
28°C24/32°C
4th Jul 2025745 AMAQI
4th Jul 2025746 AMAQI
4th Jul 2025747 AMAQI
4th Jul 2025738 AMAQI
4th Jul 20251109 AMAQI
4th Jul 202513210 AMAQI
4th Jul 202512611 AMAQI
4th Jul 202512012 PMAQI
4th Jul 20251071 PMAQI
4th Jul 20251062 PMAQI
4th Jul 20251023 PMAQI
4th Jul 20251134 PMAQI
4th Jul 20251115 PMAQI
4th Jul 2025976 PMAQI
4th Jul 20251007 PMAQI
4th Jul 20251028 PMAQI
4th Jul 2025909 PMAQI
4th Jul 20259110 PMAQI
4th Jul 20259111 PMAQI
5th Jul 20259012 AMAQI
5th Jul 2025841 AMAQI
5th Jul 2025772 AMAQI
5th Jul 2025763 AMAQI
5th Jul 2025814 AMAQI
27°C24/33°C
5th Jul 2025865 AMAQI
5th Jul 2025856 AMAQI
5th Jul 2025847 AMAQI
5th Jul 2025838 AMAQI
5th Jul 2025989 AMAQI
5th Jul 202510310 AMAQI
5th Jul 202511411 AMAQI
5th Jul 202512212 PMAQI
5th Jul 20251101 PMAQI
5th Jul 2025992 PMAQI
5th Jul 2025963 PMAQI
5th Jul 2025944 PMAQI
5th Jul 2025985 PMAQI
5th Jul 2025936 PMAQI
5th Jul 2025847 PMAQI
5th Jul 2025858 PMAQI
5th Jul 2025849 PMAQI
5th Jul 20258010 PMAQI
5th Jul 20257811 PMAQI
6th Jul 20257612 AMAQI
6th Jul 2025811 AMAQI
6th Jul 2025852 AMAQI
6th Jul 2025843 AMAQI
6th Jul 2025864 AMAQI
28°C23/34°C
6th Jul 2025885 AMAQI
6th Jul 2025886 AMAQI
6th Jul 2025887 AMAQI
6th Jul 2025888 AMAQI
6th Jul 2025729 AMAQI
6th Jul 20255710 AMAQI
6th Jul 20255411 AMAQI
6th Jul 20255812 PMAQI
6th Jul 2025661 PMAQI
6th Jul 2025602 PMAQI
6th Jul 2025543 PMAQI
6th Jul 2025484 PMAQI
6th Jul 2025515 PMAQI
6th Jul 2025506 PMAQI
6th Jul 2025507 PMAQI
6th Jul 2025638 PMAQI
6th Jul 2025699 PMAQI
6th Jul 20257210 PMAQI
6th Jul 20257411 PMAQI
7th Jul 20256812 AMAQI
7th Jul 2025701 AMAQI
7th Jul 2025842 AMAQI
7th Jul 2025843 AMAQI
7th Jul 2025824 AMAQI
27°C21/34°C
7th Jul 2025805 AMAQI
7th Jul 2025806 AMAQI
7th Jul 2025807 AMAQI
7th Jul 2025808 AMAQI
7th Jul 2025519 AMAQI
7th Jul 20254110 AMAQI
7th Jul 20254511 AMAQI
7th Jul 20255212 PMAQI
7th Jul 2025561 PMAQI
7th Jul 2025432 PMAQI
7th Jul 2025433 PMAQI
7th Jul 2025474 PMAQI
7th Jul 2025345 PMAQI
7th Jul 2025426 PMAQI
7th Jul 2025447 PMAQI
7th Jul 2025508 PMAQI
7th Jul 2025649 PMAQI
7th Jul 20256410 PMAQI
7th Jul 20256511 PMAQI
8th Jul 20256712 AMAQI
8th Jul 2025721 AMAQI
8th Jul 2025782 AMAQI
8th Jul 2025783 AMAQI
8th Jul 2025764 AMAQI
27°C21/34°C
8th Jul 2025735 AMAQI
8th Jul 2025736 AMAQI
8th Jul 2025727 AMAQI
8th Jul 2025738 AMAQI
8th Jul 2025589 AMAQI
8th Jul 20255510 AMAQI
8th Jul 20255811 AMAQI
8th Jul 20256212 PMAQI
8th Jul 2025641 PMAQI
8th Jul 2025612 PMAQI
8th Jul 2025603 PMAQI
8th Jul 2025604 PMAQI
8th Jul 2025645 PMAQI
8th Jul 2025626 PMAQI
8th Jul 2025587 PMAQI
8th Jul 2025648 PMAQI
8th Jul 2025749 PMAQI
8th Jul 20257410 PMAQI
8th Jul 20256911 PMAQI
9th Jul 20256912 AMAQI
9th Jul 2025741 AMAQI
9th Jul 2025732 AMAQI
9th Jul 2025733 AMAQI
9th Jul 2025724 AMAQI
28°C23/33°C
9th Jul 2025715 AMAQI
9th Jul 2025716 AMAQI
9th Jul 2025717 AMAQI
9th Jul 2025718 AMAQI
9th Jul 2025739 AMAQI
9th Jul 20257810 AMAQI
9th Jul 20258011 AMAQI
9th Jul 20258312 PMAQI
9th Jul 2025791 PMAQI
9th Jul 2025772 PMAQI
9th Jul 2025753 PMAQI
9th Jul 2025744 PMAQI
9th Jul 2025755 PMAQI
9th Jul 2025806 PMAQI
9th Jul 2025797 PMAQI
9th Jul 2025768 PMAQI
9th Jul 2025779 PMAQI
9th Jul 20257310 PMAQI
9th Jul 20256811 PMAQI
10th Jul 20256812 AMAQI
10th Jul 2025681 AMAQI
10th Jul 2025712 AMAQI
10th Jul 2025713 AMAQI
10th Jul 2025724 AMAQI
27°C22/33°C
10th Jul 2025725 AMAQI
10th Jul 2025736 AMAQI
10th Jul 2025727 AMAQI
10th Jul 2025728 AMAQI
10th Jul 2025659 AMAQI
10th Jul 20257010 AMAQI
10th Jul 20257011 AMAQI
10th Jul 20257712 PMAQI
10th Jul 2025881 PMAQI
10th Jul 2025872 PMAQI
10th Jul 2025913 PMAQI
10th Jul 2025924 PMAQI
10th Jul 2025945 PMAQI
10th Jul 2025866 PMAQI
10th Jul 2025857 PMAQI
10th Jul 2025798 PMAQI
10th Jul 2025749 PMAQI
10th Jul 20257210 PMAQI
10th Jul 20256611 PMAQI
11th Jul 20256112 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025702 AMAQI
11th Jul 2025703 AMAQI
11th Jul 2025704 AMAQI
26°C22/31°C
11th Jul 2025725 AMAQI
11th Jul 2025716 AMAQI
11th Jul 2025717 AMAQI
11th Jul 2025728 AMAQI
11th Jul 2025389 AMAQI
11th Jul 20252510 AMAQI
11th Jul 20251911 AMAQI
11th Jul 20252212 PMAQI
11th Jul 2025281 PMAQI
11th Jul 2025332 PMAQI
11th Jul 2025353 PMAQI
11th Jul 2025314 PMAQI
11th Jul 2025335 PMAQI
11th Jul 2025306 PMAQI
11th Jul 2025277 PMAQI
11th Jul 2025408 PMAQI
11th Jul 2025559 PMAQI
11th Jul 20255510 PMAQI
11th Jul 20255611 PMAQI
12th Jul 20255612 AMAQI
12th Jul 2025611 AMAQI
12th Jul 2025682 AMAQI
12th Jul 2025683 AMAQI
12th Jul 2025664 AMAQI
26°C23/29°C
12th Jul 2025635 AMAQI
12th Jul 2025636 AMAQI
12th Jul 2025637 AMAQI
12th Jul 2025648 AMAQI
12th Jul 2025329 AMAQI
12th Jul 20252510 AMAQI
12th Jul 20253011 AMAQI
12th Jul 20252912 PMAQI
12th Jul 2025371 PMAQI
12th Jul 2025382 PMAQI
12th Jul 2025383 PMAQI
12th Jul 2025404 PMAQI
12th Jul 2025375 PMAQI
12th Jul 2025366 PMAQI
12th Jul 2025437 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255310 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255212 AMAQI
13th Jul 2025571 AMAQI
13th Jul 2025632 AMAQI
13th Jul 2025643 AMAQI
13th Jul 2025614 AMAQI
26°C23/30°C
13th Jul 2025585 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025597 AMAQI
13th Jul 2025598 AMAQI
13th Jul 2025399 AMAQI
13th Jul 20251610 AMAQI
13th Jul 20251911 AMAQI
13th Jul 20252012 PMAQI
13th Jul 2025221 PMAQI
13th Jul 2025242 PMAQI
13th Jul 2025223 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025195 PMAQI
13th Jul 2025206 PMAQI
13th Jul 2025197 PMAQI
13th Jul 2025338 PMAQI
13th Jul 2025479 PMAQI
13th Jul 20254810 PMAQI
13th Jul 20254611 PMAQI
14th Jul 20254612 AMAQI
14th Jul 2025521 AMAQI
14th Jul 2025592 AMAQI
14th Jul 2025593 AMAQI
14th Jul 2025574 AMAQI
26°C23/31°C
14th Jul 2025545 AMAQI
14th Jul 2025546 AMAQI
14th Jul 2025547 AMAQI
14th Jul 2025548 AMAQI
14th Jul 2025299 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20252011 AMAQI
14th Jul 20251812 PMAQI
14th Jul 2025211 PMAQI
14th Jul 2025232 PMAQI
14th Jul 2025223 PMAQI
14th Jul 2025244 PMAQI
14th Jul 2025235 PMAQI
14th Jul 2025236 PMAQI
14th Jul 2025257 PMAQI
14th Jul 2025368 PMAQI
14th Jul 2025499 PMAQI
14th Jul 20254610 PMAQI
14th Jul 20254511 PMAQI
15th Jul 20254912 AMAQI
15th Jul 2025541 AMAQI
15th Jul 2025542 AMAQI
15th Jul 2025553 AMAQI
15th Jul 2025544 AMAQI
24°C21/29°C
15th Jul 2025525 AMAQI
15th Jul 2025526 AMAQI
15th Jul 2025527 AMAQI
15th Jul 2025528 AMAQI
15th Jul 2025429 AMAQI
15th Jul 20253810 AMAQI
15th Jul 20254611 AMAQI
15th Jul 20255012 PMAQI
15th Jul 2025511 PMAQI
15th Jul 2025462 PMAQI
15th Jul 2025433 PMAQI
15th Jul 2025374 PMAQI
15th Jul 2025455 PMAQI
15th Jul 2025606 PMAQI
15th Jul 2025587 PMAQI
15th Jul 2025548 PMAQI
15th Jul 2025569 PMAQI
15th Jul 20255610 PMAQI
15th Jul 20255411 PMAQI
16th Jul 20255112 AMAQI
16th Jul 2025491 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025523 AMAQI
16th Jul 2025524 AMAQI
26°C20/33°C
16th Jul 2025525 AMAQI
16th Jul 2025526 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025309 AMAQI
16th Jul 20253810 AMAQI
16th Jul 20255611 AMAQI
16th Jul 20255312 PMAQI
16th Jul 2025541 PMAQI
16th Jul 2025642 PMAQI
16th Jul 2025743 PMAQI
16th Jul 2025724 PMAQI
16th Jul 2025625 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025477 PMAQI
16th Jul 2025548 PMAQI
16th Jul 2025539 PMAQI
16th Jul 20255110 PMAQI
16th Jul 20255211 PMAQI
17th Jul 20255012 AMAQI
17th Jul 2025491 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
17th Jul 2025524 AMAQI
25°C18/33°C
17th Jul 2025525 AMAQI
17th Jul 2025536 AMAQI
17th Jul 2025537 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025409 AMAQI
17th Jul 20253510 AMAQI
17th Jul 20253611 AMAQI
17th Jul 20253612 PMAQI
17th Jul 2025341 PMAQI
17th Jul 2025362 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025284 PMAQI
17th Jul 2025215 PMAQI
17th Jul 2025206 PMAQI
17th Jul 2025197 PMAQI
17th Jul 2025278 PMAQI
17th Jul 2025399 PMAQI
17th Jul 20254210 PMAQI
17th Jul 20254011 PMAQI
18th Jul 20254112 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025502 AMAQI
18th Jul 2025523 AMAQI
18th Jul 2025524 AMAQI
26°C21/33°C
18th Jul 2025525 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025528 AMAQI
18th Jul 2025309 AMAQI
18th Jul 20252010 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252012 PMAQI
18th Jul 2025221 PMAQI
18th Jul 2025202 PMAQI
18th Jul 2025193 PMAQI
18th Jul 2025224 PMAQI
18th Jul 2025225 PMAQI
18th Jul 2025266 PMAQI
18th Jul 2025327 PMAQI
18th Jul 2025348 PMAQI
18th Jul 2025379 PMAQI
18th Jul 20253510 PMAQI
18th Jul 20253811 PMAQI
19th Jul 20254212 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025522 AMAQI
19th Jul 2025523 AMAQI
19th Jul 2025494 AMAQI
24°C22/25°C
19th Jul 2025465 AMAQI
19th Jul 2025456 AMAQI
19th Jul 2025457 AMAQI
19th Jul 2025468 AMAQI
19th Jul 2025269 AMAQI
19th Jul 20252110 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025312 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025234 PMAQI
19th Jul 2025205 PMAQI
19th Jul 2025156 PMAQI
19th Jul 2025177 PMAQI
19th Jul 2025248 PMAQI
19th Jul 2025329 PMAQI
19th Jul 20253210 PMAQI
19th Jul 20253411 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025381 AMAQI
20th Jul 2025442 AMAQI
20th Jul 2025493 AMAQI
20th Jul 2025464 AMAQI
25°C20/31°C
20th Jul 2025445 AMAQI
20th Jul 2025446 AMAQI
20th Jul 2025437 AMAQI
20th Jul 2025448 AMAQI
20th Jul 2025369 AMAQI
20th Jul 20252710 AMAQI
20th Jul 20252611 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025183 PMAQI
20th Jul 2025224 PMAQI
20th Jul 2025215 PMAQI
20th Jul 2025206 PMAQI
20th Jul 2025207 PMAQI
20th Jul 2025208 PMAQI
20th Jul 2025289 PMAQI
20th Jul 20252810 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253412 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025452 AMAQI
21st Jul 2025443 AMAQI
21st Jul 2025424 AMAQI
26°C21/32°C
21st Jul 2025405 AMAQI
21st Jul 2025406 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025219 AMAQI
21st Jul 20251810 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20253012 PMAQI
21st Jul 2025271 PMAQI
21st Jul 2025282 PMAQI
21st Jul 2025263 PMAQI
21st Jul 2025224 PMAQI
21st Jul 2025205 PMAQI
21st Jul 2025206 PMAQI
21st Jul 2025157 PMAQI
21st Jul 2025208 PMAQI
21st Jul 2025279 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20252611 PMAQI
22nd Jul 20252512 AMAQI
22nd Jul 2025331 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025403 AMAQI
22nd Jul 2025394 AMAQI
27°C21/33°C
22nd Jul 2025365 AMAQI
22nd Jul 2025366 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20251912 PMAQI
22nd Jul 2025271 PMAQI
22nd Jul 2025262 PMAQI
22nd Jul 2025163 PMAQI
22nd Jul 2025184 PMAQI
22nd Jul 2025205 PMAQI
22nd Jul 2025186 PMAQI
22nd Jul 2025247 PMAQI
22nd Jul 2025298 PMAQI
22nd Jul 2025319 PMAQI
22nd Jul 20253210 PMAQI
22nd Jul 20253011 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025291 AMAQI
23rd Jul 2025362 AMAQI
23rd Jul 2025363 AMAQI
23rd Jul 2025344 AMAQI
26°C21/33°C
23rd Jul 2025335 AMAQI
23rd Jul 2025336 AMAQI
23rd Jul 2025347 AMAQI
23rd Jul 2025338 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20251811 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025401 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025223 PMAQI
23rd Jul 2025244 PMAQI
23rd Jul 2025245 PMAQI
23rd Jul 2025246 PMAQI
23rd Jul 2025257 PMAQI
23rd Jul 2025258 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252610 PMAQI
23rd Jul 20252511 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025321 AMAQI
24th Jul 2025332 AMAQI
24th Jul 2025333 AMAQI
24th Jul 2025324 AMAQI
26°C20/33°C
24th Jul 2025325 AMAQI
24th Jul 2025316 AMAQI
24th Jul 2025327 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20252410 AMAQI
24th Jul 20252111 AMAQI
24th Jul 20252012 PMAQI
24th Jul 2025201 PMAQI
24th Jul 2025182 PMAQI
24th Jul 2025173 PMAQI
24th Jul 2025174 PMAQI
24th Jul 2025245 PMAQI
24th Jul 2025216 PMAQI
24th Jul 2025167 PMAQI
24th Jul 2025208 PMAQI
24th Jul 2025249 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252311 PMAQI
25th Jul 20252212 AMAQI
25th Jul 2025281 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025323 AMAQI
25th Jul 2025314 AMAQI
27°C22/33°C
25th Jul 2025305 AMAQI
25th Jul 2025306 AMAQI
25th Jul 2025317 AMAQI
25th Jul 2025328 AMAQI
25th Jul 2025199 AMAQI
25th Jul 20251510 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025211 PMAQI
25th Jul 2025242 PMAQI
25th Jul 2025243 PMAQI
25th Jul 2025214 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025277 PMAQI
25th Jul 2025248 PMAQI
25th Jul 2025249 PMAQI
25th Jul 20252310 PMAQI
25th Jul 20252011 PMAQI
26th Jul 20252212 AMAQI
26th Jul 2025261 AMAQI
26th Jul 2025312 AMAQI
26th Jul 2025313 AMAQI
26th Jul 2025294 AMAQI
26°C22/30°C
26th Jul 2025285 AMAQI
26th Jul 2025276 AMAQI
26th Jul 2025287 AMAQI
26th Jul 2025288 AMAQI
26th Jul 2025249 AMAQI
26th Jul 20252310 AMAQI
26th Jul 20251611 AMAQI
26th Jul 20251612 PMAQI
26th Jul 2025161 PMAQI
26th Jul 2025172 PMAQI
26th Jul 2025183 PMAQI
26th Jul 2025204 PMAQI
26th Jul 2025205 PMAQI
26th Jul 2025186 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025289 PMAQI
26th Jul 20252810 PMAQI
26th Jul 20252511 PMAQI
27th Jul 20252312 AMAQI
27th Jul 2025261 AMAQI
27th Jul 2025292 AMAQI
27th Jul 2025283 AMAQI
27th Jul 2025284 AMAQI
25°C23/28°C
27th Jul 2025265 AMAQI
27th Jul 2025276 AMAQI
27th Jul 2025267 AMAQI
27th Jul 2025278 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20251610 AMAQI
27th Jul 20251811 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025201 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025174 PMAQI
27th Jul 2025195 PMAQI
27th Jul 2025196 PMAQI
27th Jul 2025197 PMAQI
27th Jul 2025218 PMAQI
27th Jul 2025209 PMAQI
27th Jul 20252110 PMAQI
27th Jul 20252011 PMAQI
28th Jul 20252312 AMAQI
28th Jul 2025261 AMAQI
28th Jul 2025282 AMAQI
28th Jul 2025283 AMAQI
28th Jul 2025274 AMAQI
25°C23/29°C
28th Jul 2025265 AMAQI
28th Jul 2025266 AMAQI
28th Jul 2025267 AMAQI
28th Jul 2025268 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20252011 AMAQI
28th Jul 20252512 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025242 PMAQI
28th Jul 2025173 PMAQI
28th Jul 2025214 PMAQI
28th Jul 2025225 PMAQI
28th Jul 2025186 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025348 PMAQI
28th Jul 2025389 PMAQI
28th Jul 20253810 PMAQI
28th Jul 20253311 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025351 AMAQI
29th Jul 2025272 AMAQI
29th Jul 2025263 AMAQI
29th Jul 2025264 AMAQI
26°C22/32°C
29th Jul 2025265 AMAQI
29th Jul 2025266 AMAQI
29th Jul 2025267 AMAQI
29th Jul 2025268 AMAQI
29th Jul 2025209 AMAQI
29th Jul 20251710 AMAQI
29th Jul 20251511 AMAQI
29th Jul 20251712 PMAQI
29th Jul 2025181 PMAQI
29th Jul 2025232 PMAQI
29th Jul 2025283 PMAQI
29th Jul 2025304 PMAQI
29th Jul 2025275 PMAQI
29th Jul 2025256 PMAQI
29th Jul 2025237 PMAQI
29th Jul 2025268 PMAQI
29th Jul 2025289 PMAQI
29th Jul 20252510 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20253112 AMAQI
30th Jul 2025291 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025283 AMAQI
30th Jul 2025274 AMAQI
26°C20/33°C
30th Jul 2025255 AMAQI
30th Jul 2025266 AMAQI
30th Jul 2025267 AMAQI
30th Jul 2025268 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20252510 AMAQI
30th Jul 20252811 AMAQI
30th Jul 20252312 PMAQI
30th Jul 2025321 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025193 PMAQI
30th Jul 2025184 PMAQI
30th Jul 2025275 PMAQI
30th Jul 2025356 PMAQI
30th Jul 2025277 PMAQI
30th Jul 2025208 PMAQI
30th Jul 2025229 PMAQI
30th Jul 20252410 PMAQI
30th Jul 20252511 PMAQI
31st Jul 20252412 AMAQI
31st Jul 2025261 AMAQI
31st Jul 2025272 AMAQI
31st Jul 2025283 AMAQI
31st Jul 2025274 AMAQI
25°C19/33°C
31st Jul 2025275 AMAQI
31st Jul 2025276 AMAQI
31st Jul 2025277 AMAQI
31st Jul 2025278 AMAQI
31st Jul 2025279 AMAQI
31st Jul 20252710 AMAQI
31st Jul 20252811 AMAQI
31st Jul 20253012 PMAQI
31st Jul 2025261 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025323 PMAQI
31st Jul 2025454 PMAQI
31st Jul 2025465 PMAQI
31st Jul 2025296 PMAQI
31st Jul 2025247 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025389 PMAQI
31st Jul 20253810 PMAQI
31st Jul 20253211 PMAQI
1st Aug 20253012 AMAQI
1st Aug 2025281 AMAQI
1st Aug 2025282 AMAQI
1st Aug 2025283 AMAQI
1st Aug 2025304 AMAQI
--°C/°C
1st Aug 2025275 AMAQI
5 AM1st Aug 2025286 AMAQI
1st Aug 2025317 AMAQI
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 AM
50AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
9 AM - 7 PM
43AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 50), while the lowest AQI was between 9 AM to 7 PM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 4 AM
51AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM
45AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 51), while the lowest AQI was between 8 PM to 8 PM (Avg. 45).
2025 Days Vs Air Quality
Hiji, Oita, Japan
2025
76%
161
24%
50
Total number of days with different AQI categories in last 212 days in 2025 (153 days remaining)
Good
161 DaysModerate
50 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 212 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
Hiji, Oita, 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
34AQI
34AQI
3rd January 2025
33AQI
33AQI
4th January 2025
31AQI
31AQI
5th January 2025
34AQI
34AQI
6th January 2025
41AQI
41AQI
7th January 2025
32AQI
32AQI
8th January 2025
38AQI
38AQI
9th January 2025
28AQI
28AQI
10th January 2025
31AQI
31AQI
11th January 2025
29AQI
29AQI
12th January 2025
35AQI
35AQI
13th January 2025
40AQI
40AQI
14th January 2025
40AQI
40AQI
15th January 2025
42AQI
42AQI
16th January 2025
36AQI
36AQI
17th January 2025
41AQI
41AQI
18th January 2025
37AQI
37AQI
19th January 2025
41AQI
41AQI
20th January 2025
41AQI
41AQI
21st January 2025
59AQI
59AQI
22nd January 2025
65AQI
65AQI
23rd January 2025
74AQI
74AQI
24th January 2025
73AQI
73AQI
25th January 2025
46AQI
46AQI
26th January 2025
45AQI
45AQI
27th January 2025
35AQI
35AQI
28th January 2025
37AQI
37AQI
29th January 2025
32AQI
32AQI
30th January 2025
34AQI
34AQI
31st January 2025
42AQI
42AQI
1st February 2025
49AQI
49AQI
2nd February 2025
35AQI
35AQI
3rd February 2025
44AQI
44AQI
4th February 2025
31AQI
31AQI
5th February 2025
36AQI
36AQI
6th February 2025
30AQI
30AQI
7th February 2025
32AQI
32AQI
8th February 2025
30AQI
30AQI
9th February 2025
29AQI
29AQI
10th February 2025
31AQI
31AQI
11th February 2025
36AQI
36AQI
12th February 2025
31AQI
31AQI
13th February 2025
31AQI
31AQI
14th February 2025
36AQI
36AQI
15th February 2025
32AQI
32AQI
16th February 2025
39AQI
39AQI
17th February 2025
38AQI
38AQI
18th February 2025
35AQI
35AQI
19th February 2025
35AQI
35AQI
20th February 2025
33AQI
33AQI
21st February 2025
34AQI
34AQI
22nd February 2025
36AQI
36AQI
23rd February 2025
36AQI
36AQI
24th February 2025
35AQI
35AQI
25th February 2025
36AQI
36AQI
26th February 2025
43AQI
43AQI
27th February 2025
62AQI
62AQI
28th February 2025
55AQI
55AQI
1st March 2025
81AQI
81AQI
2nd March 2025
68AQI
68AQI
3rd March 2025
48AQI
48AQI
4th March 2025
39AQI
39AQI
5th March 2025
35AQI
35AQI
6th March 2025
37AQI
37AQI
7th March 2025
33AQI
33AQI
8th March 2025
39AQI
39AQI
9th March 2025
40AQI
40AQI
10th March 2025
44AQI
44AQI
11th March 2025
44AQI
44AQI
12th March 2025
47AQI
47AQI
13th March 2025
51AQI
51AQI
14th March 2025
36AQI
36AQI
15th March 2025
35AQI
35AQI
16th March 2025
23AQI
23AQI
17th March 2025
41AQI
41AQI
18th March 2025
34AQI
34AQI
19th March 2025
37AQI
37AQI
20th March 2025
43AQI
43AQI
21st March 2025
52AQI
52AQI
22nd March 2025
56AQI
56AQI
23rd March 2025
59AQI
59AQI
24th March 2025
51AQI
51AQI
25th March 2025
70AQI
70AQI
26th March 2025
66AQI
66AQI
27th March 2025
61AQI
61AQI
28th March 2025
60AQI
60AQI
29th March 2025
52AQI
52AQI
30th March 2025
41AQI
41AQI
31st March 2025
34AQI
34AQI
1st April 2025
39AQI
39AQI
2nd April 2025
35AQI
35AQI
3rd April 2025
31AQI
31AQI
4th April 2025
31AQI
31AQI
5th April 2025
41AQI
41AQI
6th April 2025
41AQI
41AQI
7th April 2025
37AQI
37AQI
8th April 2025
34AQI
34AQI
9th April 2025
52AQI
52AQI
10th April 2025
50AQI
50AQI
11th April 2025
52AQI
52AQI
12th April 2025
53AQI
53AQI
13th April 2025
43AQI
43AQI
14th April 2025
48AQI
48AQI
15th April 2025
29AQI
29AQI
16th April 2025
42AQI
42AQI
17th April 2025
43AQI
43AQI
18th April 2025
53AQI
53AQI
19th April 2025
54AQI
54AQI
20th April 2025
45AQI
45AQI
21st April 2025
44AQI
44AQI
22nd April 2025
36AQI
36AQI
23rd April 2025
28AQI
28AQI
24th April 2025
37AQI
37AQI
25th April 2025
53AQI
53AQI
26th April 2025
46AQI
46AQI
27th April 2025
55AQI
55AQI
28th April 2025
41AQI
41AQI
29th April 2025
46AQI
46AQI
30th April 2025
47AQI
47AQI
1st May 2025
46AQI
46AQI
2nd May 2025
38AQI
38AQI
3rd May 2025
41AQI
41AQI
4th May 2025
36AQI
36AQI
5th May 2025
37AQI
37AQI
6th May 2025
31AQI
31AQI
7th May 2025
31AQI
31AQI
8th May 2025
36AQI
36AQI
9th May 2025
30AQI
30AQI
10th May 2025
34AQI
34AQI
11th May 2025
33AQI
33AQI
12th May 2025
48AQI
48AQI
13th May 2025
53AQI
53AQI
14th May 2025
57AQI
57AQI
15th May 2025
55AQI
55AQI
16th May 2025
51AQI
51AQI
17th May 2025
38AQI
38AQI
18th May 2025
48AQI
48AQI
19th May 2025
54AQI
54AQI
20th May 2025
57AQI
57AQI
21st May 2025
37AQI
37AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
40AQI
40AQI
24th May 2025
32AQI
32AQI
25th May 2025
29AQI
29AQI
26th May 2025
31AQI
31AQI
27th May 2025
36AQI
36AQI
28th May 2025
42AQI
42AQI
29th May 2025
38AQI
38AQI
30th May 2025
35AQI
35AQI
31st May 2025
37AQI
37AQI
1st June 2025
45AQI
45AQI
2nd June 2025
49AQI
49AQI
3rd June 2025
29AQI
29AQI
4th June 2025
41AQI
41AQI
5th June 2025
35AQI
35AQI
6th June 2025
54AQI
54AQI
7th June 2025
55AQI
55AQI
8th June 2025
61AQI
61AQI
9th June 2025
37AQI
37AQI
10th June 2025
35AQI
35AQI
11th June 2025
46AQI
46AQI
12th June 2025
44AQI
44AQI
13th June 2025
43AQI
43AQI
14th June 2025
34AQI
34AQI
15th June 2025
32AQI
32AQI
16th June 2025
29AQI
29AQI
17th June 2025
37AQI
37AQI
18th June 2025
39AQI
39AQI
19th June 2025
42AQI
42AQI
20th June 2025
50AQI
50AQI
21st June 2025
55AQI
55AQI
22nd June 2025
69AQI
69AQI
23rd June 2025
45AQI
45AQI
24th June 2025
45AQI
45AQI
25th June 2025
46AQI
46AQI
26th June 2025
46AQI
46AQI
27th June 2025
52AQI
52AQI
28th June 2025
48AQI
48AQI
29th June 2025
48AQI
48AQI
30th June 2025
54AQI
54AQI
1st July 2025
58AQI
58AQI
2nd July 2025
73AQI
73AQI
3rd July 2025
89AQI
89AQI
4th July 2025
94AQI
94AQI
5th July 2025
90AQI
90AQI
6th July 2025
70AQI
70AQI
7th July 2025
61AQI
61AQI
8th July 2025
68AQI
68AQI
9th July 2025
75AQI
75AQI
10th July 2025
76AQI
76AQI
11th July 2025
49AQI
49AQI
12th July 2025
49AQI
49AQI
13th July 2025
41AQI
41AQI
14th July 2025
39AQI
39AQI
15th July 2025
51AQI
51AQI
16th July 2025
53AQI
53AQI
17th July 2025
40AQI
40AQI
18th July 2025
36AQI
36AQI
19th July 2025
34AQI
34AQI
20th July 2025
32AQI
32AQI
21st July 2025
30AQI
30AQI
22nd July 2025
29AQI
29AQI
23rd July 2025
28AQI
28AQI
24th July 2025
25AQI
25AQI
25th July 2025
24AQI
24AQI
26th July 2025
23AQI
23AQI
27th July 2025
22AQI
22AQI
28th July 2025
27AQI
27AQI
29th July 2025
25AQI
25AQI
30th July 2025
26AQI
26AQI
41AQI
37AQI
47AQI
43AQI
40AQI
45AQI
48AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202543AQI
27
4
26
2
19
12
23
7
25
6
23
7
18
12
161
50
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
February37AQI
202436AQI
28
3
26
3
29
2
27
3
28
3
29
1
29
2
28
3
25
5
31
27
3
31
338
28
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
December32AQI
202340AQI
26
5
28
25
6
20
10
24
7
24
6
26
4
31
26
4
26
5
25
4
26
5
307
56
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August29AQI
202238AQI
28
3
19
2
24
7
25
5
22
9
24
6
23
1
2
28
1
28
3
27
3
31
281
40
Highest AQI recorded in
May48AQI
Lowest AQI recorded in
December33AQI
202134AQI
30
1
23
5
27
2
20
1
25
6
23
7
29
2
31
29
1
30
1
25
5
31
323
31
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
August28AQI
202034AQI
11
2
19
2
16
2
22
8
29
2
17
12
2
19
28
3
29
1
30
1
220
33
2
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
September25AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
43AQILeast Polluted Year Recorded
2021(Avg.)
34AQIHiji's annual 2025 AQI (43) shows an average percentage change of 17.8% (worsened AQI) compared to previous years: 2020 (34), 2021 (34), 2022 (38), 2023 (40), 2024 (36).
