Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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+

August Air Quality Analysis

Hiji, Oita, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Aug 2024
58AQI
Lowest AQI recorded on
23rd Aug 2023
16AQI

Same Day Analysis (12th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2024 on the same day.

Day & Night AQI Trend: 11th Aug - 12th Aug 2026

Hiji, Oita, Japan

AQI
Day
Night
.

5 AM11th Aug 2026

7 PM

4 AM12th Aug 2026

Day time
Avg. Highest Time
10AM11th Aug

49AQI

Avg. Lowest Time
7AM11th Aug

22AQI

Night time
Avg. Highest Time
10PM11th Aug

50AQI

Avg. Lowest Time
4AM12th Aug

29AQI

In the last 24 hours,

Hiji's AQI reached its highest point of 50 at 10 PM during the Night, while the lowest point, 22, was recorded at 7 AM during the Day between 11th Aug and 12th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Hiji, Oita, Japan

JulAug
14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th
Day
Night
14th Jul 2026435 AMAQI
14th Jul 2026306 AMAQI
14th Jul 2026307 AMAQI
14th Jul 2026288 AMAQI
14th Jul 2026319 AMAQI
14th Jul 20263710 AMAQI
14th Jul 20264011 AMAQI
14th Jul 20263612 PMAQI
14th Jul 2026301 PMAQI
14th Jul 2026262 PMAQI
14th Jul 2026813 PMAQI
14th Jul 2026644 PMAQI
14th Jul 2026665 PMAQI
14th Jul 2026586 PMAQI
14th Jul 2026657 PMAQI
14th Jul 2026588 PMAQI
14th Jul 2026499 PMAQI
14th Jul 20265910 PMAQI
14th Jul 20266711 PMAQI
15th Jul 20267512 AMAQI
15th Jul 2026681 AMAQI
15th Jul 2026382 AMAQI
15th Jul 2026333 AMAQI
15th Jul 2026214 AMAQI

27°C22/35°C

15th Jul 2026255 AMAQI
15th Jul 2026216 AMAQI
15th Jul 2026257 AMAQI
15th Jul 2026278 AMAQI
15th Jul 2026329 AMAQI
15th Jul 20262110 AMAQI
15th Jul 20262511 AMAQI
15th Jul 20262912 PMAQI
15th Jul 2026271 PMAQI
15th Jul 2026192 PMAQI
15th Jul 2026173 PMAQI
15th Jul 2026144 PMAQI
15th Jul 2026215 PMAQI
15th Jul 2026196 PMAQI
15th Jul 2026127 PMAQI
15th Jul 2026178 PMAQI
15th Jul 2026179 PMAQI
15th Jul 20262110 PMAQI
15th Jul 20262111 PMAQI
16th Jul 20262112 AMAQI
16th Jul 2026211 AMAQI
16th Jul 2026252 AMAQI
16th Jul 2026293 AMAQI
16th Jul 2026254 AMAQI

27°C22/33°C

16th Jul 2026295 AMAQI
16th Jul 2026276 AMAQI
16th Jul 2026247 AMAQI
16th Jul 2026298 AMAQI
16th Jul 2026259 AMAQI
16th Jul 20262510 AMAQI
16th Jul 20263311 AMAQI
16th Jul 20263612 PMAQI
16th Jul 2026521 PMAQI
16th Jul 2026602 PMAQI
16th Jul 2026593 PMAQI
16th Jul 2026624 PMAQI
16th Jul 2026605 PMAQI
16th Jul 2026586 PMAQI
16th Jul 2026597 PMAQI
16th Jul 2026588 PMAQI
16th Jul 2026569 PMAQI
16th Jul 20264610 PMAQI
16th Jul 20265211 PMAQI
17th Jul 20264912 AMAQI
17th Jul 2026331 AMAQI
17th Jul 2026362 AMAQI
17th Jul 2026343 AMAQI
17th Jul 2026384 AMAQI

28°C22/35°C

17th Jul 2026475 AMAQI
17th Jul 2026456 AMAQI
17th Jul 2026387 AMAQI
17th Jul 2026408 AMAQI
17th Jul 2026389 AMAQI
17th Jul 20265210 AMAQI
17th Jul 20264211 AMAQI
17th Jul 20264212 PMAQI
17th Jul 2026441 PMAQI
17th Jul 2026492 PMAQI
17th Jul 2026463 PMAQI
17th Jul 2026534 PMAQI
17th Jul 2026635 PMAQI
17th Jul 2026696 PMAQI
17th Jul 2026667 PMAQI
17th Jul 2026658 PMAQI
17th Jul 2026639 PMAQI
17th Jul 20267010 PMAQI
17th Jul 20265311 PMAQI
18th Jul 20265812 AMAQI
18th Jul 2026591 AMAQI
18th Jul 2026582 AMAQI
18th Jul 2026583 AMAQI
18th Jul 2026564 AMAQI

26°C22/32°C

18th Jul 2026555 AMAQI
18th Jul 2026586 AMAQI
18th Jul 2026547 AMAQI
18th Jul 2026548 AMAQI
18th Jul 2026549 AMAQI
18th Jul 20265010 AMAQI
18th Jul 20265811 AMAQI
18th Jul 20265112 PMAQI
18th Jul 2026551 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026623 PMAQI
18th Jul 2026624 PMAQI
18th Jul 2026645 PMAQI
18th Jul 2026706 PMAQI
18th Jul 2026667 PMAQI
18th Jul 2026588 PMAQI
18th Jul 2026609 PMAQI
18th Jul 20266810 PMAQI
18th Jul 20267611 PMAQI
19th Jul 20267312 AMAQI
19th Jul 2026821 AMAQI
19th Jul 2026822 AMAQI
19th Jul 2026803 AMAQI
19th Jul 2026744 AMAQI

27°C23/33°C

19th Jul 2026645 AMAQI
19th Jul 2026746 AMAQI
19th Jul 2026747 AMAQI
19th Jul 2026798 AMAQI
19th Jul 2026789 AMAQI
19th Jul 20266510 AMAQI
19th Jul 20266411 AMAQI
19th Jul 20267612 PMAQI
19th Jul 2026681 PMAQI
19th Jul 2026602 PMAQI
19th Jul 2026623 PMAQI
19th Jul 2026584 PMAQI
19th Jul 2026625 PMAQI
19th Jul 2026666 PMAQI
19th Jul 2026627 PMAQI
19th Jul 2026578 PMAQI
19th Jul 2026649 PMAQI
19th Jul 20267610 PMAQI
19th Jul 20267311 PMAQI
20th Jul 20266912 AMAQI
20th Jul 2026681 AMAQI
20th Jul 2026552 AMAQI
20th Jul 2026603 AMAQI
20th Jul 2026594 AMAQI

27°C23/32°C

20th Jul 2026565 AMAQI
20th Jul 2026546 AMAQI
20th Jul 2026547 AMAQI
20th Jul 2026518 AMAQI
20th Jul 2026489 AMAQI
20th Jul 20264810 AMAQI
20th Jul 20264811 AMAQI
20th Jul 20265012 PMAQI
20th Jul 2026521 PMAQI
20th Jul 2026602 PMAQI
20th Jul 2026623 PMAQI
20th Jul 2026664 PMAQI
20th Jul 2026675 PMAQI
20th Jul 2026646 PMAQI
20th Jul 2026597 PMAQI
20th Jul 2026608 PMAQI
20th Jul 2026609 PMAQI
20th Jul 20265510 PMAQI
20th Jul 20265611 PMAQI
21st Jul 20266012 AMAQI
21st Jul 2026651 AMAQI
21st Jul 2026682 AMAQI
21st Jul 2026703 AMAQI
21st Jul 2026674 AMAQI

26°C23/31°C

21st Jul 2026865 AMAQI
21st Jul 2026846 AMAQI
21st Jul 2026727 AMAQI
21st Jul 2026768 AMAQI
21st Jul 2026769 AMAQI
21st Jul 20266910 AMAQI
21st Jul 20266411 AMAQI
21st Jul 2026721 PMAQI
21st Jul 2026742 PMAQI
21st Jul 20261043 PMAQI
21st Jul 20261064 PMAQI
21st Jul 20261025 PMAQI
21st Jul 20261016 PMAQI
21st Jul 20261127 PMAQI
21st Jul 2026968 PMAQI
21st Jul 2026889 PMAQI
21st Jul 20268810 PMAQI
21st Jul 20268611 PMAQI
22nd Jul 20268112 AMAQI
22nd Jul 2026751 AMAQI
22nd Jul 2026792 AMAQI
22nd Jul 2026803 AMAQI
22nd Jul 2026844 AMAQI

26°C22/32°C

22nd Jul 2026805 AMAQI
22nd Jul 2026906 AMAQI
22nd Jul 2026867 AMAQI
22nd Jul 2026868 AMAQI
22nd Jul 2026829 AMAQI
22nd Jul 20267310 AMAQI
22nd Jul 20267411 AMAQI
22nd Jul 20266712 PMAQI
22nd Jul 2026671 PMAQI
22nd Jul 2026662 PMAQI
22nd Jul 2026633 PMAQI
22nd Jul 2026624 PMAQI
22nd Jul 2026635 PMAQI
22nd Jul 2026626 PMAQI
22nd Jul 2026567 PMAQI
22nd Jul 2026538 PMAQI
22nd Jul 2026449 PMAQI
22nd Jul 20264210 PMAQI
22nd Jul 20264811 PMAQI
23rd Jul 20265012 AMAQI
23rd Jul 2026501 AMAQI
23rd Jul 2026482 AMAQI
23rd Jul 2026503 AMAQI
23rd Jul 2026484 AMAQI

27°C22/33°C

23rd Jul 2026425 AMAQI
23rd Jul 2026466 AMAQI
23rd Jul 2026527 AMAQI
23rd Jul 2026508 AMAQI
23rd Jul 2026509 AMAQI
23rd Jul 20264810 AMAQI
23rd Jul 20263811 AMAQI
23rd Jul 20264612 PMAQI
23rd Jul 2026551 PMAQI
23rd Jul 2026652 PMAQI
23rd Jul 2026603 PMAQI
23rd Jul 2026704 PMAQI
23rd Jul 2026655 PMAQI
23rd Jul 2026686 PMAQI
23rd Jul 2026647 PMAQI
23rd Jul 2026548 PMAQI
23rd Jul 2026489 PMAQI
23rd Jul 20264610 PMAQI
23rd Jul 20263311 PMAQI
24th Jul 20263612 AMAQI
24th Jul 2026461 AMAQI
24th Jul 2026512 AMAQI
24th Jul 2026403 AMAQI
24th Jul 2026524 AMAQI

27°C22/33°C

24th Jul 2026565 AMAQI
24th Jul 2026546 AMAQI
24th Jul 2026527 AMAQI
24th Jul 2026548 AMAQI
24th Jul 2026539 AMAQI
24th Jul 20265210 AMAQI
24th Jul 20265011 AMAQI
24th Jul 20264012 PMAQI
24th Jul 2026511 PMAQI
24th Jul 2026532 PMAQI
24th Jul 2026533 PMAQI
24th Jul 2026554 PMAQI
24th Jul 2026425 PMAQI
24th Jul 2026526 PMAQI
24th Jul 2026517 PMAQI
24th Jul 2026488 PMAQI
24th Jul 2026449 PMAQI
24th Jul 20263810 PMAQI
24th Jul 20264411 PMAQI
25th Jul 20265112 AMAQI
25th Jul 2026561 AMAQI
25th Jul 2026512 AMAQI
25th Jul 2026523 AMAQI
25th Jul 2026514 AMAQI

27°C23/33°C

25th Jul 2026575 AMAQI
25th Jul 2026606 AMAQI
25th Jul 2026467 AMAQI
25th Jul 2026468 AMAQI
25th Jul 2026559 AMAQI
25th Jul 20264210 AMAQI
25th Jul 20263811 AMAQI
25th Jul 20264612 PMAQI
25th Jul 2026521 PMAQI
25th Jul 2026422 PMAQI
25th Jul 2026533 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026315 PMAQI
25th Jul 2026486 PMAQI
25th Jul 2026467 PMAQI
25th Jul 2026338 PMAQI
25th Jul 2026339 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262111 PMAQI
26th Jul 20263312 AMAQI
26th Jul 2026311 AMAQI
26th Jul 2026252 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026234 AMAQI

28°C22/35°C

26th Jul 2026215 AMAQI
26th Jul 2026256 AMAQI
26th Jul 2026237 AMAQI
26th Jul 2026278 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262510 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026333 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026295 PMAQI
26th Jul 2026276 PMAQI
26th Jul 2026667 PMAQI
26th Jul 2026628 PMAQI
26th Jul 2026609 PMAQI
26th Jul 20263610 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026332 AMAQI
27th Jul 2026333 AMAQI
27th Jul 2026404 AMAQI

28°C22/35°C

27th Jul 2026335 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026297 AMAQI
27th Jul 2026388 AMAQI
27th Jul 2026319 AMAQI
27th Jul 20262510 AMAQI
27th Jul 20263311 AMAQI
27th Jul 20265012 PMAQI
27th Jul 2026331 PMAQI
27th Jul 2026272 PMAQI
27th Jul 2026443 PMAQI
27th Jul 2026334 PMAQI
27th Jul 2026315 PMAQI
27th Jul 2026386 PMAQI
27th Jul 2026447 PMAQI
27th Jul 2026448 PMAQI
27th Jul 2026339 PMAQI
27th Jul 20263310 PMAQI
27th Jul 20263811 PMAQI
28th Jul 20262712 AMAQI
28th Jul 2026311 AMAQI
28th Jul 2026312 AMAQI
28th Jul 2026443 AMAQI
28th Jul 2026254 AMAQI

28°C23/35°C

28th Jul 2026255 AMAQI
28th Jul 2026276 AMAQI
28th Jul 2026257 AMAQI
28th Jul 2026278 AMAQI
28th Jul 2026279 AMAQI
28th Jul 20262510 AMAQI
28th Jul 20263611 AMAQI
28th Jul 20264612 PMAQI
28th Jul 2026481 PMAQI
28th Jul 2026422 PMAQI
28th Jul 2026403 PMAQI
28th Jul 2026624 PMAQI
28th Jul 2026585 PMAQI
28th Jul 2026596 PMAQI
28th Jul 2026467 PMAQI
28th Jul 2026428 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20263011 PMAQI
29th Jul 20262912 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026212 AMAQI
29th Jul 2026333 AMAQI
29th Jul 2026214 AMAQI

29°C23/36°C

29th Jul 2026215 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026299 AMAQI
29th Jul 20262510 AMAQI
29th Jul 20262511 AMAQI
29th Jul 20262312 PMAQI
29th Jul 2026291 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026253 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026316 PMAQI
29th Jul 2026297 PMAQI
29th Jul 2026338 PMAQI
29th Jul 2026389 PMAQI
29th Jul 20263010 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026252 AMAQI
30th Jul 2026233 AMAQI
30th Jul 2026214 AMAQI

25°C22/31°C

30th Jul 2026215 AMAQI
30th Jul 2026216 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262311 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026271 PMAQI
30th Jul 2026332 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026275 PMAQI
30th Jul 2026406 PMAQI
30th Jul 2026317 PMAQI
30th Jul 2026468 PMAQI
30th Jul 2026369 PMAQI
30th Jul 20264910 PMAQI
30th Jul 20264511 PMAQI
31st Jul 20265312 AMAQI
31st Jul 2026481 AMAQI
31st Jul 2026402 AMAQI
31st Jul 2026483 AMAQI
31st Jul 2026464 AMAQI

28°C22/36°C

31st Jul 2026485 AMAQI
31st Jul 2026476 AMAQI
31st Jul 2026527 AMAQI
31st Jul 2026608 AMAQI
31st Jul 2026509 AMAQI
31st Jul 20264010 AMAQI
31st Jul 20264211 AMAQI
31st Jul 20264012 PMAQI
31st Jul 2026421 PMAQI
31st Jul 2026382 PMAQI
31st Jul 2026463 PMAQI
31st Jul 2026444 PMAQI
31st Jul 2026495 PMAQI
31st Jul 2026456 PMAQI
31st Jul 2026547 PMAQI
31st Jul 2026518 PMAQI
31st Jul 2026429 PMAQI
31st Jul 20263810 PMAQI
31st Jul 20264811 PMAQI
1st Aug 20265312 AMAQI
1st Aug 2026571 AMAQI
1st Aug 2026572 AMAQI
1st Aug 2026533 AMAQI
1st Aug 2026534 AMAQI

28°C21/36°C

1st Aug 2026625 AMAQI
1st Aug 2026566 AMAQI
1st Aug 2026567 AMAQI
1st Aug 2026598 AMAQI
1st Aug 2026529 AMAQI
1st Aug 20264810 AMAQI
1st Aug 20265611 AMAQI
1st Aug 20265512 PMAQI
1st Aug 2026401 PMAQI
1st Aug 2026332 PMAQI
1st Aug 2026423 PMAQI
1st Aug 2026214 PMAQI
1st Aug 2026335 PMAQI
1st Aug 2026276 PMAQI
1st Aug 2026297 PMAQI
1st Aug 2026468 PMAQI
1st Aug 2026339 PMAQI
1st Aug 20263810 PMAQI
1st Aug 20264411 PMAQI
2nd Aug 20267012 AMAQI
2nd Aug 2026541 AMAQI
2nd Aug 2026442 AMAQI
2nd Aug 2026423 AMAQI
2nd Aug 2026254 AMAQI

29°C22/37°C

2nd Aug 2026335 AMAQI
2nd Aug 2026406 AMAQI
2nd Aug 2026677 AMAQI
2nd Aug 2026468 AMAQI
2nd Aug 2026369 AMAQI
2nd Aug 20264410 AMAQI
2nd Aug 20263311 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026381 PMAQI
2nd Aug 2026362 PMAQI
2nd Aug 2026363 PMAQI
2nd Aug 2026404 PMAQI
2nd Aug 2026345 PMAQI
2nd Aug 2026336 PMAQI
2nd Aug 2026407 PMAQI
2nd Aug 2026278 PMAQI
2nd Aug 2026389 PMAQI
2nd Aug 20263410 PMAQI
2nd Aug 20263311 PMAQI
3rd Aug 20264412 AMAQI
3rd Aug 2026421 AMAQI
3rd Aug 2026422 AMAQI
3rd Aug 2026513 AMAQI
3rd Aug 2026444 AMAQI

29°C24/36°C

3rd Aug 2026405 AMAQI
3rd Aug 2026466 AMAQI
3rd Aug 2026467 AMAQI
3rd Aug 2026228 AMAQI
3rd Aug 2026299 AMAQI
3rd Aug 20263110 AMAQI
3rd Aug 20263611 AMAQI
3rd Aug 20265412 PMAQI
3rd Aug 2026361 PMAQI
3rd Aug 2026382 PMAQI
3rd Aug 2026603 PMAQI
3rd Aug 2026424 PMAQI
3rd Aug 2026315 PMAQI
3rd Aug 2026406 PMAQI
3rd Aug 2026427 PMAQI
3rd Aug 2026538 PMAQI
3rd Aug 2026449 PMAQI
3rd Aug 20263310 PMAQI
3rd Aug 20264011 PMAQI
4th Aug 20263112 AMAQI
4th Aug 2026271 AMAQI
4th Aug 2026232 AMAQI
4th Aug 2026313 AMAQI
4th Aug 2026314 AMAQI

28°C24/33°C

4th Aug 2026315 AMAQI
4th Aug 2026386 AMAQI
4th Aug 2026367 AMAQI
4th Aug 2026258 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20262910 AMAQI
4th Aug 20262511 AMAQI
4th Aug 20262912 PMAQI
4th Aug 2026511 PMAQI
4th Aug 2026312 PMAQI
4th Aug 2026493 PMAQI
4th Aug 2026584 PMAQI
4th Aug 2026275 PMAQI
4th Aug 2026216 PMAQI
4th Aug 2026217 PMAQI
4th Aug 2026278 PMAQI
4th Aug 2026199 PMAQI
4th Aug 20262310 PMAQI
4th Aug 20262711 PMAQI
5th Aug 20263812 AMAQI
5th Aug 2026321 AMAQI
5th Aug 2026252 AMAQI
5th Aug 2026233 AMAQI
5th Aug 2026234 AMAQI

27°C23/32°C

5th Aug 2026295 AMAQI
5th Aug 2026326 AMAQI
5th Aug 2026257 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026239 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262511 AMAQI
5th Aug 20262512 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026273 PMAQI
5th Aug 2026384 PMAQI
5th Aug 2026425 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026217 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026429 PMAQI
5th Aug 20263610 PMAQI
5th Aug 20262311 PMAQI
6th Aug 20262312 AMAQI
6th Aug 2026251 AMAQI
6th Aug 2026292 AMAQI
6th Aug 2026383 AMAQI
6th Aug 2026344 AMAQI

27°C22/33°C

6th Aug 2026295 AMAQI
6th Aug 2026256 AMAQI
6th Aug 2026277 AMAQI
6th Aug 2026278 AMAQI
6th Aug 2026259 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20262511 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026211 PMAQI
6th Aug 2026212 PMAQI
6th Aug 2026253 PMAQI
6th Aug 2026274 PMAQI
6th Aug 2026295 PMAQI
6th Aug 2026276 PMAQI
6th Aug 2026257 PMAQI
6th Aug 2026238 PMAQI
6th Aug 2026279 PMAQI
6th Aug 20262910 PMAQI
6th Aug 20262511 PMAQI
7th Aug 20264412 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026252 AMAQI
7th Aug 2026253 AMAQI
7th Aug 2026224 AMAQI

26°C21/32°C

7th Aug 2026215 AMAQI
7th Aug 2026216 AMAQI
7th Aug 2026547 AMAQI
7th Aug 2026588 AMAQI
7th Aug 2026549 AMAQI
7th Aug 20266010 AMAQI
7th Aug 20266611 AMAQI
7th Aug 20265512 PMAQI
7th Aug 2026481 PMAQI
7th Aug 2026452 PMAQI
7th Aug 2026383 PMAQI
7th Aug 2026424 PMAQI
7th Aug 2026515 PMAQI
7th Aug 2026446 PMAQI
7th Aug 2026367 PMAQI
7th Aug 2026428 PMAQI
7th Aug 2026349 PMAQI
7th Aug 20265110 PMAQI
7th Aug 20265111 PMAQI
8th Aug 20264812 AMAQI
8th Aug 2026481 AMAQI
8th Aug 2026362 AMAQI
8th Aug 2026293 AMAQI
8th Aug 2026314 AMAQI

25°C23/29°C

8th Aug 2026295 AMAQI
8th Aug 2026256 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026258 AMAQI
8th Aug 2026429 AMAQI
8th Aug 20263410 AMAQI
8th Aug 20263411 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026311 PMAQI
8th Aug 2026362 PMAQI
8th Aug 2026313 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026255 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026239 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026271 AMAQI
9th Aug 2026312 AMAQI
9th Aug 2026293 AMAQI
9th Aug 2026234 AMAQI

26°C22/31°C

9th Aug 2026255 AMAQI
9th Aug 2026256 AMAQI
9th Aug 2026347 AMAQI
9th Aug 2026318 AMAQI
9th Aug 2026279 AMAQI
9th Aug 20262510 AMAQI
9th Aug 20262311 AMAQI
9th Aug 20262312 PMAQI
9th Aug 2026341 PMAQI
9th Aug 2026252 PMAQI
9th Aug 2026253 PMAQI
9th Aug 2026234 PMAQI
9th Aug 2026235 PMAQI
9th Aug 2026296 PMAQI
9th Aug 2026257 PMAQI
9th Aug 2026328 PMAQI
9th Aug 2026239 PMAQI
9th Aug 20264010 PMAQI
9th Aug 20262311 PMAQI
10th Aug 20263112 AMAQI
10th Aug 2026251 AMAQI
10th Aug 2026252 AMAQI
10th Aug 2026253 AMAQI
10th Aug 2026294 AMAQI

25°C22/32°C

10th Aug 2026295 AMAQI
10th Aug 2026276 AMAQI
10th Aug 2026467 AMAQI
10th Aug 2026278 AMAQI
10th Aug 2026349 AMAQI
10th Aug 20263310 AMAQI
10th Aug 20262911 AMAQI
10th Aug 20264412 PMAQI
10th Aug 2026501 PMAQI
10th Aug 2026312 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026364 PMAQI
10th Aug 2026255 PMAQI
10th Aug 2026306 PMAQI
10th Aug 2026277 PMAQI
10th Aug 2026318 PMAQI
10th Aug 2026219 PMAQI
10th Aug 20262610 PMAQI
10th Aug 20263611 PMAQI
11th Aug 20264012 AMAQI
11th Aug 2026421 AMAQI
11th Aug 2026362 AMAQI
11th Aug 2026473 AMAQI
11th Aug 2026254 AMAQI

25°C21/30°C

11th Aug 2026255 AMAQI
11th Aug 2026446 AMAQI
11th Aug 2026227 AMAQI
11th Aug 2026348 AMAQI
11th Aug 2026279 AMAQI
11th Aug 20264910 AMAQI
11th Aug 20264911 AMAQI
11th Aug 20264212 PMAQI
11th Aug 2026461 PMAQI
11th Aug 2026462 PMAQI
11th Aug 2026383 PMAQI
11th Aug 2026384 PMAQI
11th Aug 2026365 PMAQI
11th Aug 2026256 PMAQI
11th Aug 2026407 PMAQI
11th Aug 2026298 PMAQI
11th Aug 2026329 PMAQI
11th Aug 20265010 PMAQI
11th Aug 20264611 PMAQI
12th Aug 20263412 AMAQI
12th Aug 2026441 AMAQI
12th Aug 2026402 AMAQI
12th Aug 2026343 AMAQI
12th Aug 2026294 AMAQI

25°C19/31°C

12th Aug 2026405 AMAQI
5 AM
12th Aug 2026496 AMAQI
12th Aug 2026407 AMAQI
12th Aug 2026338 AMAQI
12th Aug 2026489 AMAQI
12th Aug 20264410 AMAQI
12th Aug 20264411 AMAQI
12th Aug 20265712 PMAQI
12 PM
12th Aug 2026511 PMAQI
12th Aug 2026522 PMAQI
12th Aug 2026443 PMAQI
12th Aug 2026384 PMAQI
12th Aug 2026555 PMAQI
12th Aug 2026426 PMAQI
12th Aug 2026407 PMAQI
7 PM
12th Aug 2026548 PMAQI
12th Aug 2026569 PMAQI
12th Aug 20266410 PMAQI
12th Aug 20265411 PMAQI
12 AM
4 AM

24°C17/31°C

Day time
Avg. Highest Time
3 PM - 7 PM

45AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
5 AM - 12 PM

41AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 7 PM (Avg. 45), while the lowest AQI was between 5 AM to 12 PM (Avg. 41).
Night time
Avg. Highest Time
8 PM

45AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM

39AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 8 PM (Avg. 45), while the lowest AQI was between 4 AM to 4 AM (Avg. 39).

2026 Days Vs Air Quality

Hiji, Oita, Japan

2026

86%

193

14%

31

Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)

Good
193 Days
Moderate
31 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2026, 86% of 224 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 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
22AQI (US)
2nd January 2026
32AQI (US)
3rd January 2026
31AQI (US)
4th January 2026
34AQI (US)
5th January 2026
38AQI (US)
6th January 2026
33AQI (US)
7th January 2026
29AQI (US)
8th January 2026
38AQI (US)
9th January 2026
29AQI (US)
10th January 2026
35AQI (US)
11th January 2026
33AQI (US)
12th January 2026
32AQI (US)
13th January 2026
36AQI (US)
14th January 2026
26AQI (US)
15th January 2026
39AQI (US)
16th January 2026
56AQI (US)
17th January 2026
48AQI (US)
18th January 2026
56AQI (US)
19th January 2026
74AQI (US)
20th January 2026
39AQI (US)
21st January 2026
20AQI (US)
22nd January 2026
33AQI (US)
23rd January 2026
34AQI (US)
24th January 2026
36AQI (US)
25th January 2026
41AQI (US)
26th January 2026
22AQI (US)
27th January 2026
32AQI (US)
28th January 2026
17AQI (US)
29th January 2026
30AQI (US)
30th January 2026
26AQI (US)
31st January 2026
18AQI (US)
1st February 2026
32AQI (US)
2nd February 2026
33AQI (US)
3rd February 2026
27AQI (US)
4th February 2026
24AQI (US)
5th February 2026
37AQI (US)
6th February 2026
45AQI (US)
7th February 2026
34AQI (US)
8th February 2026
20AQI (US)
9th February 2026
34AQI (US)
10th February 2026
34AQI (US)
11th February 2026
40AQI (US)
12th February 2026
35AQI (US)
13th February 2026
52AQI (US)
14th February 2026
67AQI (US)
15th February 2026
61AQI (US)
16th February 2026
67AQI (US)
17th February 2026
25AQI (US)
18th February 2026
25AQI (US)
19th February 2026
56AQI (US)
20th February 2026
44AQI (US)
21st February 2026
46AQI (US)
22nd February 2026
47AQI (US)
23rd February 2026
37AQI (US)
24th February 2026
28AQI (US)
25th February 2026
19AQI (US)
26th February 2026
26AQI (US)
27th February 2026
49AQI (US)
28th February 2026
38AQI (US)
1st March 2026
34AQI (US)
2nd March 2026
58AQI (US)
3rd March 2026
38AQI (US)
4th March 2026
43AQI (US)
5th March 2026
34AQI (US)
6th March 2026
16AQI (US)
7th March 2026
36AQI (US)
8th March 2026
37AQI (US)
9th March 2026
28AQI (US)
10th March 2026
37AQI (US)
11th March 2026
29AQI (US)
12th March 2026
29AQI (US)
13th March 2026
37AQI (US)
14th March 2026
43AQI (US)
15th March 2026
59AQI (US)
16th March 2026
37AQI (US)
17th March 2026
27AQI (US)
18th March 2026
34AQI (US)
19th March 2026
30AQI (US)
20th March 2026
52AQI (US)
21st March 2026
41AQI (US)
22nd March 2026
50AQI (US)
23rd March 2026
26AQI (US)
24th March 2026
45AQI (US)
25th March 2026
42AQI (US)
26th March 2026
20AQI (US)
27th March 2026
40AQI (US)
28th March 2026
71AQI (US)
29th March 2026
81AQI (US)
30th March 2026
49AQI (US)
31st March 2026
13AQI (US)
1st April 2026
17AQI (US)
2nd April 2026
42AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
19AQI (US)
5th April 2026
42AQI (US)
6th April 2026
27AQI (US)
7th April 2026
31AQI (US)
8th April 2026
28AQI (US)
9th April 2026
31AQI (US)
10th April 2026
43AQI (US)
11th April 2026
36AQI (US)
12th April 2026
38AQI (US)
13th April 2026
27AQI (US)
14th April 2026
23AQI (US)
15th April 2026
36AQI (US)
16th April 2026
27AQI (US)
17th April 2026
35AQI (US)
18th April 2026
29AQI (US)
19th April 2026
26AQI (US)
20th April 2026
28AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
41AQI (US)
23rd April 2026
15AQI (US)
24th April 2026
20AQI (US)
25th April 2026
46AQI (US)
26th April 2026
49AQI (US)
27th April 2026
53AQI (US)
28th April 2026
55AQI (US)
29th April 2026
32AQI (US)
30th April 2026
17AQI (US)
1st May 2026
25AQI (US)
2nd May 2026
55AQI (US)
3rd May 2026
37AQI (US)
4th May 2026
22AQI (US)
5th May 2026
27AQI (US)
6th May 2026
29AQI (US)
7th May 2026
30AQI (US)
8th May 2026
31AQI (US)
9th May 2026
24AQI (US)
10th May 2026
27AQI (US)
11th May 2026
26AQI (US)
12th May 2026
30AQI (US)
13th May 2026
36AQI (US)
14th May 2026
30AQI (US)
15th May 2026
31AQI (US)
16th May 2026
76AQI (US)
17th May 2026
63AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
60AQI (US)
21st May 2026
66AQI (US)
22nd May 2026
69AQI (US)
23rd May 2026
60AQI (US)
24th May 2026
63AQI (US)
25th May 2026
54AQI (US)
26th May 2026
41AQI (US)
27th May 2026
23AQI (US)
28th May 2026
29AQI (US)
29th May 2026
28AQI (US)
30th May 2026
26AQI (US)
31st May 2026
28AQI (US)
1st June 2026
27AQI (US)
2nd June 2026
27AQI (US)
3rd June 2026
25AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
23AQI (US)
7th June 2026
20AQI (US)
8th June 2026
21AQI (US)
9th June 2026
23AQI (US)
10th June 2026
22AQI (US)
11th June 2026
26AQI (US)
12th June 2026
25AQI (US)
13th June 2026
28AQI (US)
14th June 2026
24AQI (US)
15th June 2026
23AQI (US)
16th June 2026
25AQI (US)
17th June 2026
22AQI (US)
18th June 2026
26AQI (US)
19th June 2026
28AQI (US)
20th June 2026
23AQI (US)
21st June 2026
21AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
20AQI (US)
25th June 2026
26AQI (US)
26th June 2026
28AQI (US)
27th June 2026
26AQI (US)
28th June 2026
28AQI (US)
29th June 2026
26AQI (US)
30th June 2026
38AQI (US)
1st July 2026
38AQI (US)
2nd July 2026
17AQI (US)
3rd July 2026
26AQI (US)
4th July 2026
25AQI (US)
5th July 2026
21AQI (US)
6th July 2026
23AQI (US)
7th July 2026
26AQI (US)
8th July 2026
23AQI (US)
9th July 2026
22AQI (US)
10th July 2026
26AQI (US)
11th July 2026
28AQI (US)
12th July 2026
28AQI (US)
13th July 2026
28AQI (US)
14th July 2026
47AQI (US)
15th July 2026
27AQI (US)
16th July 2026
40AQI (US)
17th July 2026
49AQI (US)
18th July 2026
59AQI (US)
19th July 2026
70AQI (US)
20th July 2026
58AQI (US)
21st July 2026
82AQI (US)
22nd July 2026
69AQI (US)
23rd July 2026
52AQI (US)
24th July 2026
49AQI (US)
25th July 2026
45AQI (US)
26th July 2026
31AQI (US)
27th July 2026
34AQI (US)
28th July 2026
36AQI (US)
29th July 2026
26AQI (US)
30th July 2026
28AQI (US)
31st July 2026
46AQI (US)
1st August 2026
46AQI (US)
2nd August 2026
40AQI (US)
3rd August 2026
41AQI (US)
4th August 2026
31AQI (US)
5th August 2026
29AQI (US)
6th August 2026
26AQI (US)
7th August 2026
42AQI (US)
8th August 2026
30AQI (US)
9th August 2026
27AQI (US)
10th August 2026
31AQI (US)
11th August 2026
38AQI (US)
12th August 2026
45AQI (US)
13th August 2026
14th August 2026
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

34AQI (US)

39AQI (US)

39AQI (US)

33AQI (US)

40AQI (US)

25AQI (US)

38AQI (US)

36AQI (US)

No. of days

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

202635AQI (US)

28
3
23
5
26
5
28
2
21
10
30
25
6
12
193
31

Highest AQI (US) recorded in

May

40AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202543AQI (US)

27
4
26
2
19
12
23
7
25
6
23
7
19
12
29
2
30
17
14
15
15
25
6
278
87

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202436AQI (US)

27
3
26
3
29
2
27
3
28
3
29
1
29
2
28
3
25
5
31
27
3
31
337
28

Highest AQI (US) recorded in

April

44AQI (US)

Lowest AQI (US) recorded in

December

32AQI (US)

202340AQI (US)

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 (US) recorded in

April

47AQI (US)

Lowest AQI (US) recorded in

August

29AQI (US)

202238AQI (US)

27
3
19
2
24
7
25
5
22
9
24
6
23
1
2
28
1
28
3
27
3
31
280
40

Highest AQI (US) recorded in

May

48AQI (US)

Lowest AQI (US) recorded in

December

33AQI (US)

202134AQI (US)

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 (US) recorded in

June

41AQI (US)

Lowest AQI (US) recorded in

August

28AQI (US)

202034AQI (US)

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 (US) recorded in

August

52AQI (US)

Lowest AQI (US) recorded in

September

25AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
43AQI (US)
Least Polluted Year Recorded
2020(Avg.)
34AQI (US)

Hiji's annual 2026 AQI (US) (35) shows an average percentage change of -5.9% (improved AQI (US)) compared to previous years: 2020 (34), 2021 (34), 2022 (38), 2023 (40), 2024 (36), 2025 (43).