Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Hirao, Yamaguchi, 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

Hirao, Yamaguchi, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
6th Aug 2024
65AQI
Lowest AQI recorded on
13th Aug 2021
14AQI

Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 58 of Moderate air quality, showing improvement over 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025

Hirao, Yamaguchi, Japan

AQI
Day
Night
.

5 AM2nd Aug 2025

7 PM

4 AM3rd Aug 2025

Day time
Avg. Highest Time
12PM2nd Aug

68AQI

Avg. Lowest Time
5AM2nd Aug

43AQI

Night time
Avg. Highest Time
8PM2nd Aug

48AQI

Avg. Lowest Time
3AM3rd Aug

39AQI

In the last 24 hours,

Hirao's AQI reached its highest point of 68 at 12 PM during the Day, while the lowest point, 39, was recorded at 3 AM during the Night between 2nd Aug and 3rd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Hirao, Yamaguchi, 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 2025735 AMAQI
4th Jul 2025736 AMAQI
4th Jul 2025747 AMAQI
4th Jul 2025738 AMAQI
4th Jul 2025979 AMAQI
4th Jul 20259910 AMAQI
4th Jul 202510211 AMAQI
4th Jul 20259812 PMAQI
4th Jul 2025971 PMAQI
4th Jul 2025992 PMAQI
4th Jul 2025893 PMAQI
4th Jul 2025924 PMAQI
4th Jul 2025955 PMAQI
4th Jul 2025946 PMAQI
4th Jul 2025947 PMAQI
4th Jul 2025908 PMAQI
4th Jul 2025869 PMAQI
4th Jul 20258610 PMAQI
4th Jul 20258711 PMAQI
5th Jul 20258612 AMAQI
5th Jul 2025821 AMAQI
5th Jul 2025762 AMAQI
5th Jul 2025763 AMAQI
5th Jul 2025794 AMAQI

26°C24/30°C

5th Jul 2025825 AMAQI
5th Jul 2025826 AMAQI
5th Jul 2025827 AMAQI
5th Jul 2025828 AMAQI
5th Jul 2025849 AMAQI
5th Jul 20258410 AMAQI
5th Jul 20258411 AMAQI
5th Jul 20258712 PMAQI
5th Jul 2025881 PMAQI
5th Jul 2025822 PMAQI
5th Jul 2025743 PMAQI
5th Jul 2025744 PMAQI
5th Jul 2025735 PMAQI
5th Jul 2025746 PMAQI
5th Jul 2025787 PMAQI
5th Jul 2025818 PMAQI
5th Jul 2025789 PMAQI
5th Jul 20257810 PMAQI
5th Jul 20257911 PMAQI
6th Jul 20257612 AMAQI
6th Jul 2025771 AMAQI
6th Jul 2025832 AMAQI
6th Jul 2025843 AMAQI
6th Jul 2025844 AMAQI

27°C24/30°C

6th Jul 2025845 AMAQI
6th Jul 2025836 AMAQI
6th Jul 2025827 AMAQI
6th Jul 2025828 AMAQI
6th Jul 2025649 AMAQI
6th Jul 20254610 AMAQI
6th Jul 20253411 AMAQI
6th Jul 20253812 PMAQI
6th Jul 2025441 PMAQI
6th Jul 2025432 PMAQI
6th Jul 2025423 PMAQI
6th Jul 2025384 PMAQI
6th Jul 2025365 PMAQI
6th Jul 2025356 PMAQI
6th Jul 2025367 PMAQI
6th Jul 2025508 PMAQI
6th Jul 2025699 PMAQI
6th Jul 20257010 PMAQI
6th Jul 20257011 PMAQI
7th Jul 20257012 AMAQI
7th Jul 2025751 AMAQI
7th Jul 2025832 AMAQI
7th Jul 2025843 AMAQI
7th Jul 2025804 AMAQI

26°C24/30°C

7th Jul 2025765 AMAQI
7th Jul 2025766 AMAQI
7th Jul 2025767 AMAQI
7th Jul 2025758 AMAQI
7th Jul 2025449 AMAQI
7th Jul 20254110 AMAQI
7th Jul 20254411 AMAQI
7th Jul 20253812 PMAQI
7th Jul 2025461 PMAQI
7th Jul 2025522 PMAQI
7th Jul 2025523 PMAQI
7th Jul 2025554 PMAQI
7th Jul 2025545 PMAQI
7th Jul 2025546 PMAQI
7th Jul 2025547 PMAQI
7th Jul 2025608 PMAQI
7th Jul 2025669 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256611 PMAQI
8th Jul 20256812 AMAQI
8th Jul 2025721 AMAQI
8th Jul 2025792 AMAQI
8th Jul 2025773 AMAQI
8th Jul 2025754 AMAQI

26°C23/30°C

8th Jul 2025725 AMAQI
8th Jul 2025726 AMAQI
8th Jul 2025717 AMAQI
8th Jul 2025728 AMAQI
8th Jul 2025649 AMAQI
8th Jul 20256010 AMAQI
8th Jul 20256011 AMAQI
8th Jul 20256312 PMAQI
8th Jul 2025641 PMAQI
8th Jul 2025682 PMAQI
8th Jul 2025673 PMAQI
8th Jul 2025644 PMAQI
8th Jul 2025625 PMAQI
8th Jul 2025606 PMAQI
8th Jul 2025627 PMAQI
8th Jul 2025648 PMAQI
8th Jul 2025689 PMAQI
8th Jul 20256810 PMAQI
8th Jul 20257011 PMAQI
9th Jul 20257012 AMAQI
9th Jul 2025721 AMAQI
9th Jul 2025742 AMAQI
9th Jul 2025733 AMAQI
9th Jul 2025724 AMAQI

27°C24/30°C

9th Jul 2025725 AMAQI
9th Jul 2025726 AMAQI
9th Jul 2025727 AMAQI
9th Jul 2025718 AMAQI
9th Jul 2025669 AMAQI
9th Jul 20256810 AMAQI
9th Jul 20256811 AMAQI
9th Jul 20257412 PMAQI
9th Jul 2025771 PMAQI
9th Jul 2025762 PMAQI
9th Jul 2025783 PMAQI
9th Jul 2025784 PMAQI
9th Jul 2025845 PMAQI
9th Jul 2025866 PMAQI
9th Jul 2025867 PMAQI
9th Jul 2025838 PMAQI
9th Jul 2025789 PMAQI
9th Jul 20257610 PMAQI
9th Jul 20257611 PMAQI
10th Jul 20257612 AMAQI
10th Jul 2025751 AMAQI
10th Jul 2025722 AMAQI
10th Jul 2025723 AMAQI
10th Jul 2025724 AMAQI

26°C24/29°C

10th Jul 2025715 AMAQI
10th Jul 2025726 AMAQI
10th Jul 2025727 AMAQI
10th Jul 2025728 AMAQI
10th Jul 2025789 AMAQI
10th Jul 20258310 AMAQI
10th Jul 20258911 AMAQI
10th Jul 20259212 PMAQI
10th Jul 2025971 PMAQI
10th Jul 20251012 PMAQI
10th Jul 2025993 PMAQI
10th Jul 2025964 PMAQI
10th Jul 2025945 PMAQI
10th Jul 2025956 PMAQI
10th Jul 2025907 PMAQI
10th Jul 2025888 PMAQI
10th Jul 2025799 PMAQI
10th Jul 20258010 PMAQI
10th Jul 20257811 PMAQI
11th Jul 20257912 AMAQI
11th Jul 2025761 AMAQI
11th Jul 2025712 AMAQI
11th Jul 2025713 AMAQI
11th Jul 2025734 AMAQI

26°C24/30°C

11th Jul 2025755 AMAQI
11th Jul 2025756 AMAQI
11th Jul 2025757 AMAQI
11th Jul 2025758 AMAQI
11th Jul 2025769 AMAQI
11th Jul 20257710 AMAQI
11th Jul 20257311 AMAQI
11th Jul 20257412 PMAQI
11th Jul 2025761 PMAQI
11th Jul 2025652 PMAQI
11th Jul 2025563 PMAQI
11th Jul 2025564 PMAQI
11th Jul 2025565 PMAQI
11th Jul 2025636 PMAQI
11th Jul 2025647 PMAQI
11th Jul 2025628 PMAQI
11th Jul 2025639 PMAQI
11th Jul 20256210 PMAQI
11th Jul 20256211 PMAQI
12th Jul 20256112 AMAQI
12th Jul 2025661 AMAQI
12th Jul 2025732 AMAQI
12th Jul 2025733 AMAQI
12th Jul 2025734 AMAQI

26°C24/29°C

12th Jul 2025725 AMAQI
12th Jul 2025736 AMAQI
12th Jul 2025737 AMAQI
12th Jul 2025728 AMAQI
12th Jul 2025499 AMAQI
12th Jul 20254410 AMAQI
12th Jul 20254811 AMAQI
12th Jul 20255512 PMAQI
12th Jul 2025581 PMAQI
12th Jul 2025582 PMAQI
12th Jul 2025573 PMAQI
12th Jul 2025564 PMAQI
12th Jul 2025505 PMAQI
12th Jul 2025496 PMAQI
12th Jul 2025557 PMAQI
12th Jul 2025588 PMAQI
12th Jul 2025629 PMAQI
12th Jul 20256010 PMAQI
12th Jul 20255911 PMAQI
13th Jul 20255912 AMAQI
13th Jul 2025631 AMAQI
13th Jul 2025702 AMAQI
13th Jul 2025703 AMAQI
13th Jul 2025684 AMAQI

26°C24/29°C

13th Jul 2025665 AMAQI
13th Jul 2025666 AMAQI
13th Jul 2025667 AMAQI
13th Jul 2025668 AMAQI
13th Jul 2025519 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20253311 AMAQI
13th Jul 20253812 PMAQI
13th Jul 2025441 PMAQI
13th Jul 2025462 PMAQI
13th Jul 2025423 PMAQI
13th Jul 2025364 PMAQI
13th Jul 2025375 PMAQI
13th Jul 2025356 PMAQI
13th Jul 2025327 PMAQI
13th Jul 2025428 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255311 PMAQI
14th Jul 20255312 AMAQI
14th Jul 2025591 AMAQI
14th Jul 2025652 AMAQI
14th Jul 2025653 AMAQI
14th Jul 2025634 AMAQI

26°C24/29°C

14th Jul 2025625 AMAQI
14th Jul 2025626 AMAQI
14th Jul 2025617 AMAQI
14th Jul 2025628 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20252311 AMAQI
14th Jul 20252612 PMAQI
14th Jul 2025251 PMAQI
14th Jul 2025222 PMAQI
14th Jul 2025223 PMAQI
14th Jul 2025244 PMAQI
14th Jul 2025255 PMAQI
14th Jul 2025206 PMAQI
14th Jul 2025217 PMAQI
14th Jul 2025318 PMAQI
14th Jul 2025489 PMAQI
14th Jul 20254810 PMAQI
14th Jul 20254911 PMAQI
15th Jul 20255012 AMAQI
15th Jul 2025541 AMAQI
15th Jul 2025602 AMAQI
15th Jul 2025613 AMAQI
15th Jul 2025594 AMAQI

24°C22/26°C

15th Jul 2025565 AMAQI
15th Jul 2025576 AMAQI
15th Jul 2025567 AMAQI
15th Jul 2025578 AMAQI
15th Jul 2025379 AMAQI
15th Jul 20253410 AMAQI
15th Jul 20253611 AMAQI
15th Jul 20253912 PMAQI
15th Jul 2025501 PMAQI
15th Jul 2025562 PMAQI
15th Jul 2025623 PMAQI
15th Jul 2025694 PMAQI
15th Jul 2025765 PMAQI
15th Jul 2025676 PMAQI
15th Jul 2025697 PMAQI
15th Jul 2025638 PMAQI
15th Jul 2025599 PMAQI
15th Jul 20255810 PMAQI
15th Jul 20255811 PMAQI
16th Jul 20255712 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025573 AMAQI
16th Jul 2025554 AMAQI

25°C22/28°C

16th Jul 2025555 AMAQI
16th Jul 2025556 AMAQI
16th Jul 2025557 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025539 AMAQI
16th Jul 20255210 AMAQI
16th Jul 20255511 AMAQI
16th Jul 20256212 PMAQI
16th Jul 2025601 PMAQI
16th Jul 2025602 PMAQI
16th Jul 2025653 PMAQI
16th Jul 2025664 PMAQI
16th Jul 2025625 PMAQI
16th Jul 2025596 PMAQI
16th Jul 2025557 PMAQI
16th Jul 2025538 PMAQI
16th Jul 2025559 PMAQI
16th Jul 20255710 PMAQI
16th Jul 20255811 PMAQI
17th Jul 20255812 AMAQI
17th Jul 2025581 AMAQI
17th Jul 2025562 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025564 AMAQI

26°C23/28°C

17th Jul 2025565 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025509 AMAQI
17th Jul 20254810 AMAQI
17th Jul 20254211 AMAQI
17th Jul 20254012 PMAQI
17th Jul 2025401 PMAQI
17th Jul 2025402 PMAQI
17th Jul 2025403 PMAQI
17th Jul 2025504 PMAQI
17th Jul 2025595 PMAQI
17th Jul 2025476 PMAQI
17th Jul 2025257 PMAQI
17th Jul 2025308 PMAQI
17th Jul 2025419 PMAQI
17th Jul 20254210 PMAQI
17th Jul 20254111 PMAQI
18th Jul 20254212 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025562 AMAQI
18th Jul 2025563 AMAQI
18th Jul 2025564 AMAQI

26°C24/28°C

18th Jul 2025555 AMAQI
18th Jul 2025556 AMAQI
18th Jul 2025557 AMAQI
18th Jul 2025558 AMAQI
18th Jul 2025259 AMAQI
18th Jul 20251410 AMAQI
18th Jul 20251411 AMAQI
18th Jul 20251712 PMAQI
18th Jul 2025201 PMAQI
18th Jul 2025212 PMAQI
18th Jul 2025223 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025276 PMAQI
18th Jul 2025257 PMAQI
18th Jul 2025348 PMAQI
18th Jul 2025429 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20253911 PMAQI
19th Jul 20254012 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025532 AMAQI
19th Jul 2025543 AMAQI
19th Jul 2025524 AMAQI

24°C24/25°C

19th Jul 2025505 AMAQI
19th Jul 2025496 AMAQI
19th Jul 2025497 AMAQI
19th Jul 2025498 AMAQI
19th Jul 2025319 AMAQI
19th Jul 20252610 AMAQI
19th Jul 20253011 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025271 PMAQI
19th Jul 2025282 PMAQI
19th Jul 2025293 PMAQI
19th Jul 2025284 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025276 PMAQI
19th Jul 2025217 PMAQI
19th Jul 2025288 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253811 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025421 AMAQI
20th Jul 2025502 AMAQI
20th Jul 2025513 AMAQI
20th Jul 2025494 AMAQI

26°C23/28°C

20th Jul 2025465 AMAQI
20th Jul 2025466 AMAQI
20th Jul 2025467 AMAQI
20th Jul 2025478 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20252410 AMAQI
20th Jul 20252511 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025261 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025213 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025265 PMAQI
20th Jul 2025266 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253810 PMAQI
20th Jul 20253611 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025381 AMAQI
21st Jul 2025452 AMAQI
21st Jul 2025453 AMAQI
21st Jul 2025444 AMAQI

26°C24/28°C

21st Jul 2025425 AMAQI
21st Jul 2025436 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025438 AMAQI
21st Jul 2025259 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20251811 AMAQI
21st Jul 20252112 PMAQI
21st Jul 2025211 PMAQI
21st Jul 2025202 PMAQI
21st Jul 2025193 PMAQI
21st Jul 2025184 PMAQI
21st Jul 2025205 PMAQI
21st Jul 2025186 PMAQI
21st Jul 2025177 PMAQI
21st Jul 2025248 PMAQI
21st Jul 2025279 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025422 AMAQI
22nd Jul 2025423 AMAQI
22nd Jul 2025404 AMAQI

26°C24/29°C

22nd Jul 2025385 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20251911 AMAQI
22nd Jul 20251912 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025202 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025204 PMAQI
22nd Jul 2025225 PMAQI
22nd Jul 2025266 PMAQI
22nd Jul 2025277 PMAQI
22nd Jul 2025488 PMAQI
22nd Jul 2025369 PMAQI
22nd Jul 20253610 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025331 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025393 AMAQI
23rd Jul 2025364 AMAQI

26°C24/30°C

23rd Jul 2025345 AMAQI
23rd Jul 2025346 AMAQI
23rd Jul 2025347 AMAQI
23rd Jul 2025348 AMAQI
23rd Jul 2025249 AMAQI
23rd Jul 20252110 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252212 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025242 PMAQI
23rd Jul 2025303 PMAQI
23rd Jul 2025344 PMAQI
23rd Jul 2025305 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025337 PMAQI
23rd Jul 2025318 PMAQI
23rd Jul 2025349 PMAQI
23rd Jul 20253310 PMAQI
23rd Jul 20253211 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025301 AMAQI
24th Jul 2025352 AMAQI
24th Jul 2025343 AMAQI
24th Jul 2025344 AMAQI

26°C24/30°C

24th Jul 2025335 AMAQI
24th Jul 2025336 AMAQI
24th Jul 2025337 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025269 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20253711 AMAQI
24th Jul 20254512 PMAQI
24th Jul 2025401 PMAQI
24th Jul 2025412 PMAQI
24th Jul 2025413 PMAQI
24th Jul 2025454 PMAQI
24th Jul 2025405 PMAQI
24th Jul 2025426 PMAQI
24th Jul 2025387 PMAQI
24th Jul 2025348 PMAQI
24th Jul 2025309 PMAQI
24th Jul 20252810 PMAQI
24th Jul 20252711 PMAQI
25th Jul 20252612 AMAQI
25th Jul 2025331 AMAQI
25th Jul 2025352 AMAQI
25th Jul 2025333 AMAQI
25th Jul 2025344 AMAQI

27°C24/30°C

25th Jul 2025345 AMAQI
25th Jul 2025356 AMAQI
25th Jul 2025347 AMAQI
25th Jul 2025348 AMAQI
25th Jul 2025309 AMAQI
25th Jul 20253510 AMAQI
25th Jul 20253911 AMAQI
25th Jul 20253912 PMAQI
25th Jul 2025361 PMAQI
25th Jul 2025372 PMAQI
25th Jul 2025343 PMAQI
25th Jul 2025314 PMAQI
25th Jul 2025325 PMAQI
25th Jul 2025296 PMAQI
25th Jul 2025267 PMAQI
25th Jul 2025288 PMAQI
25th Jul 2025349 PMAQI
25th Jul 20253510 PMAQI
25th Jul 20253311 PMAQI
26th Jul 20253312 AMAQI
26th Jul 2025341 AMAQI
26th Jul 2025332 AMAQI
26th Jul 2025323 AMAQI
26th Jul 2025334 AMAQI

27°C25/30°C

26th Jul 2025345 AMAQI
26th Jul 2025346 AMAQI
26th Jul 2025337 AMAQI
26th Jul 2025338 AMAQI
26th Jul 2025269 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252211 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025261 PMAQI
26th Jul 2025242 PMAQI
26th Jul 2025253 PMAQI
26th Jul 2025234 PMAQI
26th Jul 2025225 PMAQI
26th Jul 2025196 PMAQI
26th Jul 2025237 PMAQI
26th Jul 2025208 PMAQI
26th Jul 2025259 PMAQI
26th Jul 20252410 PMAQI
26th Jul 20252411 PMAQI
27th Jul 20252412 AMAQI
27th Jul 2025281 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025333 AMAQI
27th Jul 2025324 AMAQI

27°C25/30°C

27th Jul 2025315 AMAQI
27th Jul 2025326 AMAQI
27th Jul 2025317 AMAQI
27th Jul 2025318 AMAQI
27th Jul 2025269 AMAQI
27th Jul 20252010 AMAQI
27th Jul 20251611 AMAQI
27th Jul 20251612 PMAQI
27th Jul 2025181 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025184 PMAQI
27th Jul 2025205 PMAQI
27th Jul 2025206 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025308 PMAQI
27th Jul 2025309 PMAQI
27th Jul 20252510 PMAQI
27th Jul 20252511 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025261 AMAQI
28th Jul 2025302 AMAQI
28th Jul 2025303 AMAQI
28th Jul 2025294 AMAQI

27°C24/30°C

28th Jul 2025285 AMAQI
28th Jul 2025286 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025288 AMAQI
28th Jul 2025239 AMAQI
28th Jul 20252210 AMAQI
28th Jul 20252611 AMAQI
28th Jul 20253412 PMAQI
28th Jul 2025341 PMAQI
28th Jul 2025322 PMAQI
28th Jul 2025333 PMAQI
28th Jul 2025334 PMAQI
28th Jul 2025355 PMAQI
28th Jul 2025356 PMAQI
28th Jul 2025387 PMAQI
28th Jul 2025338 PMAQI
28th Jul 2025299 PMAQI
28th Jul 20253010 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20252612 AMAQI
29th Jul 2025261 AMAQI
29th Jul 2025282 AMAQI
29th Jul 2025283 AMAQI
29th Jul 2025284 AMAQI

26°C24/30°C

29th Jul 2025285 AMAQI
29th Jul 2025286 AMAQI
29th Jul 2025297 AMAQI
29th Jul 2025288 AMAQI
29th Jul 2025259 AMAQI
29th Jul 20252410 AMAQI
29th Jul 20252411 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025291 PMAQI
29th Jul 2025302 PMAQI
29th Jul 2025343 PMAQI
29th Jul 2025374 PMAQI
29th Jul 2025345 PMAQI
29th Jul 2025346 PMAQI
29th Jul 2025287 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025259 PMAQI
29th Jul 20252110 PMAQI
29th Jul 20252211 PMAQI
30th Jul 20252212 AMAQI
30th Jul 2025251 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025283 AMAQI
30th Jul 2025284 AMAQI

27°C25/30°C

30th Jul 2025295 AMAQI
30th Jul 2025296 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025288 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20252211 AMAQI
30th Jul 20252512 PMAQI
30th Jul 2025291 PMAQI
30th Jul 2025352 PMAQI
30th Jul 2025383 PMAQI
30th Jul 2025364 PMAQI
30th Jul 2025355 PMAQI
30th Jul 2025346 PMAQI
30th Jul 2025367 PMAQI
30th Jul 2025308 PMAQI
30th Jul 2025249 PMAQI
30th Jul 20252410 PMAQI
30th Jul 20252211 PMAQI
31st Jul 20252212 AMAQI
31st Jul 2025241 AMAQI
31st Jul 2025272 AMAQI
31st Jul 2025263 AMAQI
31st Jul 2025274 AMAQI

26°C24/30°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 20252911 AMAQI
31st Jul 20253412 PMAQI
31st Jul 2025371 PMAQI
31st Jul 2025402 PMAQI
31st Jul 2025383 PMAQI
31st Jul 2025364 PMAQI
31st Jul 2025365 PMAQI
31st Jul 2025386 PMAQI
31st Jul 2025367 PMAQI
31st Jul 2025398 PMAQI
31st Jul 2025689 PMAQI
31st Jul 20257110 PMAQI
31st Jul 20256611 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025611 AMAQI
1st Aug 2025592 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025484 AMAQI

27°C24/30°C

1st Aug 2025555 AMAQI
1st Aug 2025566 AMAQI
1st Aug 2025567 AMAQI
1st Aug 2025588 AMAQI
1st Aug 2025659 AMAQI
1st Aug 20256410 AMAQI
1st Aug 20257211 AMAQI
1st Aug 20256112 PMAQI
1st Aug 2025601 PMAQI
1st Aug 2025582 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025675 PMAQI
1st Aug 2025616 PMAQI
1st Aug 2025627 PMAQI
1st Aug 2025538 PMAQI
1st Aug 2025509 PMAQI
1st Aug 20254610 PMAQI
1st Aug 20254611 PMAQI
2nd Aug 20255112 AMAQI
2nd Aug 2025421 AMAQI
2nd Aug 2025442 AMAQI
2nd Aug 2025433 AMAQI
2nd Aug 2025484 AMAQI

27°C24/30°C

2nd Aug 2025435 AMAQI
2nd Aug 2025476 AMAQI
2nd Aug 2025467 AMAQI
2nd Aug 2025458 AMAQI
2nd Aug 2025609 AMAQI
2nd Aug 20255210 AMAQI
2nd Aug 20255411 AMAQI
2nd Aug 20256812 PMAQI
2nd Aug 2025631 PMAQI
2nd Aug 2025582 PMAQI
2nd Aug 2025603 PMAQI
2nd Aug 2025614 PMAQI
2nd Aug 2025585 PMAQI
2nd Aug 2025516 PMAQI
2nd Aug 2025457 PMAQI
2nd Aug 2025488 PMAQI
2nd Aug 2025409 PMAQI
2nd Aug 20254010 PMAQI
2nd Aug 20254311 PMAQI
3rd Aug 20254112 AMAQI
3rd Aug 2025401 AMAQI
3rd Aug 2025392 AMAQI
3rd Aug 2025393 AMAQI
3rd Aug 2025424 AMAQI

28°C24/31°C

3rd Aug 2025435 AMAQI
5 AM
3rd Aug 2025416 AMAQI
3rd Aug 2025427 AMAQI
3rd Aug 2025448 AMAQI
3rd Aug 2025469 AMAQI
3rd Aug 20254010 AMAQI
3rd Aug 20255511 AMAQI
3rd Aug 20255312 PMAQI
12 PM
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

52AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
10 AM - 11 AM

42AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 52), while the lowest AQI was between 10 AM to 11 AM (Avg. 42).
Night time
Avg. Highest Time
2 AM - 4 AM

53AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
8 PM

46AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 4 AM (Avg. 53), while the lowest AQI was between 8 PM to 8 PM (Avg. 46).

2025 Days Vs Air Quality

Hirao, Yamaguchi, Japan

2025

69%

146

31%

67

Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)

Good
146 Days
Moderate
67 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 69%

Health Risk Level:

Moderate

In 2025, 69% of 215 days were within WHO’s safe air quality limits, and 31% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Hirao, Yamaguchi, 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
28AQI
2nd January 2025
32AQI
3rd January 2025
30AQI
4th January 2025
29AQI
5th January 2025
28AQI
6th January 2025
38AQI
7th January 2025
29AQI
8th January 2025
32AQI
9th January 2025
27AQI
10th January 2025
27AQI
11th January 2025
27AQI
12th January 2025
28AQI
13th January 2025
40AQI
14th January 2025
47AQI
15th January 2025
39AQI
16th January 2025
36AQI
17th January 2025
40AQI
18th January 2025
32AQI
19th January 2025
43AQI
20th January 2025
42AQI
21st January 2025
51AQI
22nd January 2025
61AQI
23rd January 2025
70AQI
24th January 2025
71AQI
25th January 2025
45AQI
26th January 2025
43AQI
27th January 2025
37AQI
28th January 2025
35AQI
29th January 2025
32AQI
30th January 2025
41AQI
31st January 2025
48AQI
1st February 2025
52AQI
2nd February 2025
35AQI
3rd February 2025
47AQI
4th February 2025
31AQI
5th February 2025
38AQI
6th February 2025
29AQI
7th February 2025
36AQI
8th February 2025
30AQI
9th February 2025
31AQI
10th February 2025
31AQI
11th February 2025
34AQI
12th February 2025
39AQI
13th February 2025
30AQI
14th February 2025
38AQI
15th February 2025
31AQI
16th February 2025
40AQI
17th February 2025
38AQI
18th February 2025
34AQI
19th February 2025
34AQI
20th February 2025
31AQI
21st February 2025
33AQI
22nd February 2025
37AQI
23rd February 2025
37AQI
24th February 2025
37AQI
25th February 2025
38AQI
26th February 2025
43AQI
27th February 2025
66AQI
28th February 2025
61AQI
1st March 2025
72AQI
2nd March 2025
67AQI
3rd March 2025
46AQI
4th March 2025
39AQI
5th March 2025
31AQI
6th March 2025
34AQI
7th March 2025
33AQI
8th March 2025
39AQI
9th March 2025
40AQI
10th March 2025
41AQI
11th March 2025
45AQI
12th March 2025
51AQI
13th March 2025
53AQI
14th March 2025
37AQI
15th March 2025
37AQI
16th March 2025
24AQI
17th March 2025
39AQI
18th March 2025
32AQI
19th March 2025
41AQI
20th March 2025
48AQI
21st March 2025
55AQI
22nd March 2025
64AQI
23rd March 2025
68AQI
24th March 2025
59AQI
25th March 2025
69AQI
26th March 2025
71AQI
27th March 2025
57AQI
28th March 2025
56AQI
29th March 2025
48AQI
30th March 2025
40AQI
31st March 2025
38AQI
1st April 2025
41AQI
2nd April 2025
34AQI
3rd April 2025
28AQI
4th April 2025
32AQI
5th April 2025
40AQI
6th April 2025
43AQI
7th April 2025
43AQI
8th April 2025
43AQI
9th April 2025
59AQI
10th April 2025
56AQI
11th April 2025
59AQI
12th April 2025
57AQI
13th April 2025
46AQI
14th April 2025
47AQI
15th April 2025
33AQI
16th April 2025
48AQI
17th April 2025
48AQI
18th April 2025
58AQI
19th April 2025
55AQI
20th April 2025
42AQI
21st April 2025
42AQI
22nd April 2025
48AQI
23rd April 2025
30AQI
24th April 2025
40AQI
25th April 2025
60AQI
26th April 2025
55AQI
27th April 2025
58AQI
28th April 2025
48AQI
29th April 2025
49AQI
30th April 2025
53AQI
1st May 2025
51AQI
2nd May 2025
42AQI
3rd May 2025
48AQI
4th May 2025
41AQI
5th May 2025
43AQI
6th May 2025
32AQI
7th May 2025
34AQI
8th May 2025
36AQI
9th May 2025
36AQI
10th May 2025
33AQI
11th May 2025
40AQI
12th May 2025
51AQI
13th May 2025
55AQI
14th May 2025
60AQI
15th May 2025
54AQI
16th May 2025
56AQI
17th May 2025
46AQI
18th May 2025
54AQI
19th May 2025
59AQI
20th May 2025
56AQI
21st May 2025
48AQI
22nd May 2025
42AQI
23rd May 2025
48AQI
24th May 2025
35AQI
25th May 2025
28AQI
26th May 2025
34AQI
27th May 2025
40AQI
28th May 2025
44AQI
29th May 2025
48AQI
30th May 2025
44AQI
31st May 2025
40AQI
1st June 2025
47AQI
2nd June 2025
52AQI
3rd June 2025
31AQI
4th June 2025
44AQI
5th June 2025
45AQI
6th June 2025
52AQI
7th June 2025
57AQI
8th June 2025
62AQI
9th June 2025
59AQI
10th June 2025
35AQI
11th June 2025
43AQI
12th June 2025
48AQI
13th June 2025
49AQI
14th June 2025
38AQI
15th June 2025
33AQI
16th June 2025
34AQI
17th June 2025
34AQI
18th June 2025
47AQI
19th June 2025
48AQI
20th June 2025
54AQI
21st June 2025
55AQI
22nd June 2025
52AQI
23rd June 2025
38AQI
24th June 2025
45AQI
25th June 2025
42AQI
26th June 2025
51AQI
27th June 2025
54AQI
28th June 2025
52AQI
29th June 2025
55AQI
30th June 2025
55AQI
1st July 2025
58AQI
2nd July 2025
75AQI
3rd July 2025
87AQI
4th July 2025
86AQI
5th July 2025
80AQI
6th July 2025
61AQI
7th July 2025
63AQI
8th July 2025
68AQI
9th July 2025
76AQI
10th July 2025
82AQI
11th July 2025
69AQI
12th July 2025
61AQI
13th July 2025
52AQI
14th July 2025
42AQI
15th July 2025
57AQI
16th July 2025
57AQI
17th July 2025
47AQI
18th July 2025
37AQI
19th July 2025
37AQI
20th July 2025
35AQI
21st July 2025
30AQI
22nd July 2025
32AQI
23rd July 2025
31AQI
24th July 2025
34AQI
25th July 2025
33AQI
26th July 2025
27AQI
27th July 2025
26AQI
28th July 2025
30AQI
29th July 2025
28AQI
30th July 2025
28AQI
31st July 2025
37AQI
1st August 2025
58AQI

39AQI

38AQI

48AQI

47AQI

44AQI

47AQI

51AQI

58AQI

No. of days

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

202545AQI

27
4
25
3
19
12
20
10
22
9
17
13
16
15
1
146
67

Highest AQI recorded in

August

58AQI

Lowest AQI recorded in

February

38AQI

202436AQI

31
25
4
27
4
24
6
26
5
27
3
30
1
24
7
28
2
30
1
24
6
31
327
39

Highest AQI recorded in

May

42AQI

Lowest AQI recorded in

December

32AQI

202338AQI

27
3
1
28
21
10
17
13
25
6
23
7
28
3
29
2
26
4
25
6
22
7
26
5
297
66
1

Highest AQI recorded in

April

48AQI

Lowest AQI recorded in

August

30AQI

202238AQI

28
3
19
2
25
6
14
3
18
13
22
8
17
6
1
25
3
26
5
24
6
31
250
55

Highest AQI recorded in

May

49AQI

Lowest AQI recorded in

December

30AQI

202135AQI

26
5
24
4
27
2
20
1
23
8
14
16
30
1
28
3
25
4
1
28
3
24
6
30
1
299
54
1

Highest AQI recorded in

June

49AQI

Lowest AQI recorded in

April

25AQI

202032AQI

12
1
20
1
17
1
23
7
30
1
14
7
18
1
29
2
28
2
30
1
221
24

Highest AQI recorded in

August

47AQI

Lowest AQI recorded in

December

26AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
45AQI
Least Polluted Year Recorded
2020(Avg.)
32AQI

Hirao's annual 2025 AQI (45) shows an average percentage change of 25.2% (worsened AQI) compared to previous years: 2020 (32), 2021 (35), 2022 (38), 2023 (38), 2024 (36).