Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Niihama, Ehime, 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

Niihama, Ehime, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Aug 2021
72AQI
Lowest AQI recorded on
29th Aug 2024
16AQI

Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 43 of Good air quality, showing improvement over 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

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

Niihama, Ehime, Japan

AQI
Day
Night
.

5 AM2nd Aug 2025

7 PM

4 AM3rd Aug 2025

Day time
Avg. Highest Time
12AMNaNth undefined

AQI

Avg. Lowest Time
12AMNaNth undefined

AQI

Night time
Avg. Highest Time
2PM2nd Aug

60AQI

Avg. Lowest Time
8AM2nd Aug

38AQI

In the last 24 hours,

Niihama's AQI reached its highest point of 60 at 2 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 2nd Aug and 3rd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Niihama, Ehime, 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 2025795 AMAQI
4th Jul 2025806 AMAQI
4th Jul 2025807 AMAQI
4th Jul 2025808 AMAQI
4th Jul 20251079 AMAQI
4th Jul 202512010 AMAQI
4th Jul 202512211 AMAQI
4th Jul 202512312 PMAQI
4th Jul 20251221 PMAQI
4th Jul 20251252 PMAQI
4th Jul 20251353 PMAQI
4th Jul 20251394 PMAQI
4th Jul 20251415 PMAQI
4th Jul 20251486 PMAQI
4th Jul 20251487 PMAQI
4th Jul 20251408 PMAQI
4th Jul 20251109 PMAQI
4th Jul 202510910 PMAQI
4th Jul 202510711 PMAQI
5th Jul 202510412 AMAQI
5th Jul 2025951 AMAQI
5th Jul 2025842 AMAQI
5th Jul 2025833 AMAQI
5th Jul 2025844 AMAQI

26°C23/30°C

5th Jul 2025905 AMAQI
5th Jul 2025876 AMAQI
5th Jul 2025897 AMAQI
5th Jul 2025918 AMAQI
5th Jul 20251159 AMAQI
5th Jul 202512610 AMAQI
5th Jul 202511611 AMAQI
5th Jul 202510412 PMAQI
5th Jul 20251041 PMAQI
5th Jul 20251062 PMAQI
5th Jul 2025963 PMAQI
5th Jul 2025854 PMAQI
5th Jul 2025885 PMAQI
5th Jul 2025886 PMAQI
5th Jul 2025887 PMAQI
5th Jul 2025888 PMAQI
5th Jul 2025889 PMAQI
5th Jul 20258810 PMAQI
5th Jul 20258711 PMAQI
6th Jul 20258712 AMAQI
6th Jul 2025871 AMAQI
6th Jul 2025872 AMAQI
6th Jul 2025883 AMAQI
6th Jul 2025884 AMAQI

26°C24/30°C

6th Jul 2025925 AMAQI
6th Jul 2025916 AMAQI
6th Jul 2025927 AMAQI
6th Jul 2025908 AMAQI
6th Jul 2025739 AMAQI
6th Jul 20255010 AMAQI
6th Jul 20254811 AMAQI
6th Jul 20254712 PMAQI
6th Jul 2025561 PMAQI
6th Jul 2025562 PMAQI
6th Jul 2025543 PMAQI
6th Jul 2025564 PMAQI
6th Jul 2025565 PMAQI
6th Jul 2025586 PMAQI
6th Jul 2025587 PMAQI
6th Jul 2025638 PMAQI
6th Jul 2025769 PMAQI
6th Jul 20257610 PMAQI
6th Jul 20257511 PMAQI
7th Jul 20257612 AMAQI
7th Jul 2025791 AMAQI
7th Jul 2025862 AMAQI
7th Jul 2025873 AMAQI
7th Jul 2025864 AMAQI

26°C23/30°C

7th Jul 2025845 AMAQI
7th Jul 2025836 AMAQI
7th Jul 2025847 AMAQI
7th Jul 2025838 AMAQI
7th Jul 2025509 AMAQI
7th Jul 20253810 AMAQI
7th Jul 20254111 AMAQI
7th Jul 20254612 PMAQI
7th Jul 2025541 PMAQI
7th Jul 2025562 PMAQI
7th Jul 2025573 PMAQI
7th Jul 2025564 PMAQI
7th Jul 2025565 PMAQI
7th Jul 2025566 PMAQI
7th Jul 2025597 PMAQI
7th Jul 2025638 PMAQI
7th Jul 2025729 PMAQI
7th Jul 20257310 PMAQI
7th Jul 20257311 PMAQI
8th Jul 20257212 AMAQI
8th Jul 2025751 AMAQI
8th Jul 2025812 AMAQI
8th Jul 2025813 AMAQI
8th Jul 2025794 AMAQI

25°C23/28°C

8th Jul 2025755 AMAQI
8th Jul 2025756 AMAQI
8th Jul 2025757 AMAQI
8th Jul 2025768 AMAQI
8th Jul 2025649 AMAQI
8th Jul 20255910 AMAQI
8th Jul 20256211 AMAQI
8th Jul 20256612 PMAQI
8th Jul 2025701 PMAQI
8th Jul 2025722 PMAQI
8th Jul 2025743 PMAQI
8th Jul 2025804 PMAQI
8th Jul 2025805 PMAQI
8th Jul 2025746 PMAQI
8th Jul 2025637 PMAQI
8th Jul 2025588 PMAQI
8th Jul 2025699 PMAQI
8th Jul 20257010 PMAQI
8th Jul 20257011 PMAQI
9th Jul 20257012 AMAQI
9th Jul 2025721 AMAQI
9th Jul 2025752 AMAQI
9th Jul 2025753 AMAQI
9th Jul 2025754 AMAQI

25°C23/28°C

9th Jul 2025735 AMAQI
9th Jul 2025736 AMAQI
9th Jul 2025737 AMAQI
9th Jul 2025738 AMAQI
9th Jul 2025709 AMAQI
9th Jul 20257410 AMAQI
9th Jul 20258011 AMAQI
9th Jul 20258212 PMAQI
9th Jul 2025811 PMAQI
9th Jul 2025802 PMAQI
9th Jul 2025803 PMAQI
9th Jul 2025814 PMAQI
9th Jul 2025865 PMAQI
9th Jul 2025816 PMAQI
9th Jul 2025717 PMAQI
9th Jul 2025728 PMAQI
9th Jul 2025769 PMAQI
9th Jul 20257410 PMAQI
9th Jul 20257011 PMAQI
10th Jul 20257112 AMAQI
10th Jul 2025741 AMAQI
10th Jul 2025722 AMAQI
10th Jul 2025723 AMAQI
10th Jul 2025734 AMAQI

25°C22/28°C

10th Jul 2025745 AMAQI
10th Jul 2025746 AMAQI
10th Jul 2025747 AMAQI
10th Jul 2025748 AMAQI
10th Jul 2025789 AMAQI
10th Jul 20258410 AMAQI
10th Jul 20258611 AMAQI
10th Jul 20258612 PMAQI
10th Jul 2025861 PMAQI
10th Jul 2025882 PMAQI
10th Jul 2025913 PMAQI
10th Jul 2025914 PMAQI
10th Jul 2025895 PMAQI
10th Jul 2025876 PMAQI
10th Jul 2025877 PMAQI
10th Jul 2025808 PMAQI
10th Jul 2025759 PMAQI
10th Jul 20256910 PMAQI
10th Jul 20256611 PMAQI
11th Jul 20256512 AMAQI
11th Jul 2025681 AMAQI
11th Jul 2025722 AMAQI
11th Jul 2025723 AMAQI
11th Jul 2025724 AMAQI

25°C23/28°C

11th Jul 2025745 AMAQI
11th Jul 2025746 AMAQI
11th Jul 2025747 AMAQI
11th Jul 2025748 AMAQI
11th Jul 2025619 AMAQI
11th Jul 20256410 AMAQI
11th Jul 20256611 AMAQI
11th Jul 20256612 PMAQI
11th Jul 2025581 PMAQI
11th Jul 2025562 PMAQI
11th Jul 2025533 PMAQI
11th Jul 2025524 PMAQI
11th Jul 2025535 PMAQI
11th Jul 2025486 PMAQI
11th Jul 2025427 PMAQI
11th Jul 2025488 PMAQI
11th Jul 2025619 PMAQI
11th Jul 20256010 PMAQI
11th Jul 20256011 PMAQI
12th Jul 20256012 AMAQI
12th Jul 2025621 AMAQI
12th Jul 2025672 AMAQI
12th Jul 2025713 AMAQI
12th Jul 2025704 AMAQI

25°C23/28°C

12th Jul 2025695 AMAQI
12th Jul 2025686 AMAQI
12th Jul 2025687 AMAQI
12th Jul 2025688 AMAQI
12th Jul 2025479 AMAQI
12th Jul 20255010 AMAQI
12th Jul 20255411 AMAQI
12th Jul 20255212 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025532 PMAQI
12th Jul 2025563 PMAQI
12th Jul 2025574 PMAQI
12th Jul 2025585 PMAQI
12th Jul 2025586 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025568 PMAQI
12th Jul 2025619 PMAQI
12th Jul 20255910 PMAQI
12th Jul 20256011 PMAQI
13th Jul 20255912 AMAQI
13th Jul 2025621 AMAQI
13th Jul 2025662 AMAQI
13th Jul 2025663 AMAQI
13th Jul 2025654 AMAQI

25°C22/28°C

13th Jul 2025635 AMAQI
13th Jul 2025646 AMAQI
13th Jul 2025637 AMAQI
13th Jul 2025638 AMAQI
13th Jul 2025519 AMAQI
13th Jul 20254510 AMAQI
13th Jul 20255111 AMAQI
13th Jul 20255112 PMAQI
13th Jul 2025491 PMAQI
13th Jul 2025482 PMAQI
13th Jul 2025493 PMAQI
13th Jul 2025444 PMAQI
13th Jul 2025395 PMAQI
13th Jul 2025406 PMAQI
13th Jul 2025427 PMAQI
13th Jul 2025418 PMAQI
13th Jul 2025559 PMAQI
13th Jul 20255510 PMAQI
13th Jul 20255611 PMAQI
14th Jul 20255612 AMAQI
14th Jul 2025581 AMAQI
14th Jul 2025632 AMAQI
14th Jul 2025633 AMAQI
14th Jul 2025624 AMAQI

25°C23/28°C

14th Jul 2025605 AMAQI
14th Jul 2025616 AMAQI
14th Jul 2025607 AMAQI
14th Jul 2025618 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251712 PMAQI
14th Jul 2025311 PMAQI
14th Jul 2025272 PMAQI
14th Jul 2025273 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025325 PMAQI
14th Jul 2025316 PMAQI
14th Jul 2025257 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025592 AMAQI
15th Jul 2025603 AMAQI
15th Jul 2025584 AMAQI

24°C22/26°C

15th Jul 2025565 AMAQI
15th Jul 2025566 AMAQI
15th Jul 2025567 AMAQI
15th Jul 2025568 AMAQI
15th Jul 2025279 AMAQI
15th Jul 20252110 AMAQI
15th Jul 20252811 AMAQI
15th Jul 20253012 PMAQI
15th Jul 2025381 PMAQI
15th Jul 2025402 PMAQI
15th Jul 2025443 PMAQI
15th Jul 2025474 PMAQI
15th Jul 2025505 PMAQI
15th Jul 2025526 PMAQI
15th Jul 2025527 PMAQI
15th Jul 2025528 PMAQI
15th Jul 2025559 PMAQI
15th Jul 20255510 PMAQI
15th Jul 20255711 PMAQI
16th Jul 20255712 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025554 AMAQI

24°C22/27°C

16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025579 AMAQI
16th Jul 20256010 AMAQI
16th Jul 20256111 AMAQI
16th Jul 20256012 PMAQI
16th Jul 2025591 PMAQI
16th Jul 2025582 PMAQI
16th Jul 2025593 PMAQI
16th Jul 2025624 PMAQI
16th Jul 2025615 PMAQI
16th Jul 2025626 PMAQI
16th Jul 2025607 PMAQI
16th Jul 2025598 PMAQI
16th Jul 2025569 PMAQI
16th Jul 20255610 PMAQI
16th Jul 20255811 PMAQI
17th Jul 20255812 AMAQI
17th Jul 2025571 AMAQI
17th Jul 2025562 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025564 AMAQI

25°C22/28°C

17th Jul 2025565 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025589 AMAQI
17th Jul 20255910 AMAQI
17th Jul 20255711 AMAQI
17th Jul 20255712 PMAQI
17th Jul 2025561 PMAQI
17th Jul 2025482 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025284 PMAQI
17th Jul 2025305 PMAQI
17th Jul 2025286 PMAQI
17th Jul 2025267 PMAQI
17th Jul 2025318 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254710 PMAQI
17th Jul 20254811 PMAQI
18th Jul 20254812 AMAQI
18th Jul 2025511 AMAQI
18th Jul 2025552 AMAQI
18th Jul 2025563 AMAQI
18th Jul 2025564 AMAQI

25°C23/27°C

18th Jul 2025555 AMAQI
18th Jul 2025556 AMAQI
18th Jul 2025557 AMAQI
18th Jul 2025568 AMAQI
18th Jul 2025259 AMAQI
18th Jul 20251710 AMAQI
18th Jul 20252511 AMAQI
18th Jul 20252712 PMAQI
18th Jul 2025311 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025386 PMAQI
18th Jul 2025377 PMAQI
18th Jul 2025388 PMAQI
18th Jul 2025489 PMAQI
18th Jul 20254610 PMAQI
18th Jul 20254711 PMAQI
19th Jul 20254812 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025532 AMAQI
19th Jul 2025533 AMAQI
19th Jul 2025534 AMAQI

25°C22/28°C

19th Jul 2025525 AMAQI
19th Jul 2025526 AMAQI
19th Jul 2025527 AMAQI
19th Jul 2025528 AMAQI
19th Jul 2025339 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20253411 AMAQI
19th Jul 20253912 PMAQI
19th Jul 2025411 PMAQI
19th Jul 2025372 PMAQI
19th Jul 2025373 PMAQI
19th Jul 2025364 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025357 PMAQI
19th Jul 2025388 PMAQI
19th Jul 2025419 PMAQI
19th Jul 20254110 PMAQI
19th Jul 20254011 PMAQI
20th Jul 20254412 AMAQI
20th Jul 2025471 AMAQI
20th Jul 2025502 AMAQI
20th Jul 2025513 AMAQI
20th Jul 2025504 AMAQI

25°C22/28°C

20th Jul 2025485 AMAQI
20th Jul 2025486 AMAQI
20th Jul 2025487 AMAQI
20th Jul 2025488 AMAQI
20th Jul 2025409 AMAQI
20th Jul 20253710 AMAQI
20th Jul 20253611 AMAQI
20th Jul 20253512 PMAQI
20th Jul 2025381 PMAQI
20th Jul 2025372 PMAQI
20th Jul 2025413 PMAQI
20th Jul 2025394 PMAQI
20th Jul 2025325 PMAQI
20th Jul 2025296 PMAQI
20th Jul 2025287 PMAQI
20th Jul 2025318 PMAQI
20th Jul 2025419 PMAQI
20th Jul 20254110 PMAQI
20th Jul 20254011 PMAQI
21st Jul 20254012 AMAQI
21st Jul 2025431 AMAQI
21st Jul 2025482 AMAQI
21st Jul 2025483 AMAQI
21st Jul 2025464 AMAQI

25°C22/29°C

21st Jul 2025465 AMAQI
21st Jul 2025466 AMAQI
21st Jul 2025457 AMAQI
21st Jul 2025458 AMAQI
21st Jul 2025299 AMAQI
21st Jul 20252910 AMAQI
21st Jul 20253011 AMAQI
21st Jul 20253312 PMAQI
21st Jul 2025331 PMAQI
21st Jul 2025362 PMAQI
21st Jul 2025403 PMAQI
21st Jul 2025364 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025336 PMAQI
21st Jul 2025397 PMAQI
21st Jul 2025428 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254310 PMAQI
21st Jul 20254311 PMAQI
22nd Jul 20254112 AMAQI
22nd Jul 2025411 AMAQI
22nd Jul 2025432 AMAQI
22nd Jul 2025443 AMAQI
22nd Jul 2025434 AMAQI

25°C23/29°C

22nd Jul 2025425 AMAQI
22nd Jul 2025426 AMAQI
22nd Jul 2025427 AMAQI
22nd Jul 2025428 AMAQI
22nd Jul 2025299 AMAQI
22nd Jul 20252610 AMAQI
22nd Jul 20252711 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025231 PMAQI
22nd Jul 2025252 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025324 PMAQI
22nd Jul 2025335 PMAQI
22nd Jul 2025366 PMAQI
22nd Jul 2025417 PMAQI
22nd Jul 2025448 PMAQI
22nd Jul 2025449 PMAQI
22nd Jul 20254310 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254212 AMAQI
23rd Jul 2025421 AMAQI
23rd Jul 2025432 AMAQI
23rd Jul 2025423 AMAQI
23rd Jul 2025404 AMAQI

26°C22/29°C

23rd Jul 2025395 AMAQI
23rd Jul 2025386 AMAQI
23rd Jul 2025397 AMAQI
23rd Jul 2025388 AMAQI
23rd Jul 2025319 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20253211 AMAQI
23rd Jul 20253612 PMAQI
23rd Jul 2025331 PMAQI
23rd Jul 2025352 PMAQI
23rd Jul 2025403 PMAQI
23rd Jul 2025464 PMAQI
23rd Jul 2025505 PMAQI
23rd Jul 2025536 PMAQI
23rd Jul 2025547 PMAQI
23rd Jul 2025538 PMAQI
23rd Jul 2025519 PMAQI
23rd Jul 20255010 PMAQI
23rd Jul 20254911 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025441 AMAQI
24th Jul 2025402 AMAQI
24th Jul 2025403 AMAQI
24th Jul 2025404 AMAQI

26°C23/29°C

24th Jul 2025405 AMAQI
24th Jul 2025396 AMAQI
24th Jul 2025397 AMAQI
24th Jul 2025398 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20252710 AMAQI
24th Jul 20253511 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025441 PMAQI
24th Jul 2025482 PMAQI
24th Jul 2025553 PMAQI
24th Jul 2025554 PMAQI
24th Jul 2025585 PMAQI
24th Jul 2025646 PMAQI
24th Jul 2025647 PMAQI
24th Jul 2025608 PMAQI
24th Jul 2025549 PMAQI
24th Jul 20255310 PMAQI
24th Jul 20255211 PMAQI
25th Jul 20254812 AMAQI
25th Jul 2025441 AMAQI
25th Jul 2025402 AMAQI
25th Jul 2025403 AMAQI
25th Jul 2025404 AMAQI

26°C23/29°C

25th Jul 2025405 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025418 AMAQI
25th Jul 2025319 AMAQI
25th Jul 20253310 AMAQI
25th Jul 20253311 AMAQI
25th Jul 20252412 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025292 PMAQI
25th Jul 2025303 PMAQI
25th Jul 2025284 PMAQI
25th Jul 2025235 PMAQI
25th Jul 2025236 PMAQI
25th Jul 2025247 PMAQI
25th Jul 2025258 PMAQI
25th Jul 2025319 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20253211 PMAQI
26th Jul 20252912 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025422 AMAQI
26th Jul 2025423 AMAQI
26th Jul 2025404 AMAQI

26°C24/29°C

26th Jul 2025385 AMAQI
26th Jul 2025386 AMAQI
26th Jul 2025387 AMAQI
26th Jul 2025388 AMAQI
26th Jul 2025259 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252311 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025191 PMAQI
26th Jul 2025212 PMAQI
26th Jul 2025213 PMAQI
26th Jul 2025224 PMAQI
26th Jul 2025215 PMAQI
26th Jul 2025186 PMAQI
26th Jul 2025177 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025289 PMAQI
26th Jul 20252810 PMAQI
26th Jul 20252711 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025281 AMAQI
27th Jul 2025352 AMAQI
27th Jul 2025373 AMAQI
27th Jul 2025354 AMAQI

26°C24/29°C

27th Jul 2025335 AMAQI
27th Jul 2025336 AMAQI
27th Jul 2025347 AMAQI
27th Jul 2025338 AMAQI
27th Jul 2025269 AMAQI
27th Jul 20252210 AMAQI
27th Jul 20252311 AMAQI
27th Jul 20252312 PMAQI
27th Jul 2025231 PMAQI
27th Jul 2025252 PMAQI
27th Jul 2025243 PMAQI
27th Jul 2025234 PMAQI
27th Jul 2025275 PMAQI
27th Jul 2025286 PMAQI
27th Jul 2025287 PMAQI
27th Jul 2025288 PMAQI
27th Jul 2025299 PMAQI
27th Jul 20252710 PMAQI
27th Jul 20252611 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025311 AMAQI
28th Jul 2025332 AMAQI
28th Jul 2025323 AMAQI
28th Jul 2025314 AMAQI

26°C24/29°C

28th Jul 2025305 AMAQI
28th Jul 2025306 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025318 AMAQI
28th Jul 2025249 AMAQI
28th Jul 20252710 AMAQI
28th Jul 20253011 AMAQI
28th Jul 20253012 PMAQI
28th Jul 2025311 PMAQI
28th Jul 2025362 PMAQI
28th Jul 2025383 PMAQI
28th Jul 2025364 PMAQI
28th Jul 2025405 PMAQI
28th Jul 2025476 PMAQI
28th Jul 2025547 PMAQI
28th Jul 2025498 PMAQI
28th Jul 2025459 PMAQI
28th Jul 20254610 PMAQI
28th Jul 20254411 PMAQI
29th Jul 20254212 AMAQI
29th Jul 2025391 AMAQI
29th Jul 2025302 AMAQI
29th Jul 2025313 AMAQI
29th Jul 2025304 AMAQI

26°C23/28°C

29th Jul 2025305 AMAQI
29th Jul 2025306 AMAQI
29th Jul 2025307 AMAQI
29th Jul 2025308 AMAQI
29th Jul 2025319 AMAQI
29th Jul 20253210 AMAQI
29th Jul 20253811 AMAQI
29th Jul 20254212 PMAQI
29th Jul 2025421 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025483 PMAQI
29th Jul 2025514 PMAQI
29th Jul 2025545 PMAQI
29th Jul 2025546 PMAQI
29th Jul 2025577 PMAQI
29th Jul 2025568 PMAQI
29th Jul 2025519 PMAQI
29th Jul 20254710 PMAQI
29th Jul 20254211 PMAQI
30th Jul 20253612 AMAQI
30th Jul 2025331 AMAQI
30th Jul 2025322 AMAQI
30th Jul 2025323 AMAQI
30th Jul 2025324 AMAQI

26°C24/29°C

30th Jul 2025345 AMAQI
30th Jul 2025336 AMAQI
30th Jul 2025337 AMAQI
30th Jul 2025338 AMAQI
30th Jul 2025339 AMAQI
30th Jul 20253010 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253812 PMAQI
30th Jul 2025341 PMAQI
30th Jul 2025392 PMAQI
30th Jul 2025523 PMAQI
30th Jul 2025564 PMAQI
30th Jul 2025585 PMAQI
30th Jul 2025586 PMAQI
30th Jul 2025597 PMAQI
30th Jul 2025568 PMAQI
30th Jul 2025459 PMAQI
30th Jul 20254010 PMAQI
30th Jul 20253611 PMAQI
31st Jul 20253512 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025322 AMAQI
31st Jul 2025323 AMAQI
31st Jul 2025324 AMAQI

27°C23/30°C

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 20253711 AMAQI
31st Jul 20253912 PMAQI
31st Jul 2025401 PMAQI
31st Jul 2025432 PMAQI
31st Jul 2025453 PMAQI
31st Jul 2025464 PMAQI
31st Jul 2025475 PMAQI
31st Jul 2025536 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025488 PMAQI
31st Jul 2025439 PMAQI
31st Jul 20254310 PMAQI
31st Jul 20253811 PMAQI
1st Aug 20253912 AMAQI
1st Aug 2025351 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025343 AMAQI
1st Aug 2025334 AMAQI

27°C24/30°C

1st Aug 2025345 AMAQI
1st Aug 2025356 AMAQI
1st Aug 2025367 AMAQI
1st Aug 2025358 AMAQI
1st Aug 2025499 AMAQI
1st Aug 20255010 AMAQI
1st Aug 20255111 AMAQI
1st Aug 20255512 PMAQI
1st Aug 2025531 PMAQI
1st Aug 2025452 PMAQI
1st Aug 2025523 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025576 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025508 PMAQI
1st Aug 2025489 PMAQI
1st Aug 20254610 PMAQI
1st Aug 20254411 PMAQI
2nd Aug 20254612 AMAQI
2nd Aug 2025351 AMAQI
2nd Aug 2025392 AMAQI
2nd Aug 2025343 AMAQI
2nd Aug 2025374 AMAQI

27°C24/31°C

2nd Aug 2025405 AMAQI
2nd Aug 2025416 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025419 AMAQI
2nd Aug 20254810 AMAQI
2nd Aug 20255211 AMAQI
2nd Aug 20255012 PMAQI
2nd Aug 2025521 PMAQI
2nd Aug 2025602 PMAQI
2nd Aug 2025583 PMAQI
2nd Aug 2025484 PMAQI
2nd Aug 2025455 PMAQI
2nd Aug 2025496 PMAQI
2nd Aug 2025447 PMAQI
2nd Aug 2025498 PMAQI
2nd Aug 2025439 PMAQI
2nd Aug 20254510 PMAQI
2nd Aug 20254711 PMAQI
3rd Aug 20254412 AMAQI
3rd Aug 2025451 AMAQI

--°C/°C

5 AM
12 PM
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

54AQI

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

46AQI

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. 54), while the lowest AQI was between 9 AM to 10 AM (Avg. 46).
Night time
Avg. Highest Time
12 AM - 4 AM

55AQI

5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM

52AQI

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. 55), while the lowest AQI was between 8 PM to 8 PM (Avg. 52).

2025 Days Vs Air Quality

Niihama, Ehime, Japan

2025

61%

129

38%

82

0.9%

2

Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)

Good
129 Days
Moderate
82 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 61%

Health Risk Level:

Moderate

In 2025, 61% of 214 days were within WHO’s safe air quality limits, and 39% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Niihama, Ehime, 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
30AQI
2nd January 2025
38AQI
3rd January 2025
33AQI
4th January 2025
32AQI
5th January 2025
31AQI
6th January 2025
46AQI
7th January 2025
32AQI
8th January 2025
34AQI
9th January 2025
29AQI
10th January 2025
28AQI
11th January 2025
29AQI
12th January 2025
29AQI
13th January 2025
40AQI
14th January 2025
47AQI
15th January 2025
44AQI
16th January 2025
37AQI
17th January 2025
36AQI
18th January 2025
32AQI
19th January 2025
52AQI
20th January 2025
41AQI
21st January 2025
53AQI
22nd January 2025
59AQI
23rd January 2025
69AQI
24th January 2025
89AQI
25th January 2025
46AQI
26th January 2025
48AQI
27th January 2025
40AQI
28th January 2025
42AQI
29th January 2025
35AQI
30th January 2025
45AQI
31st January 2025
59AQI
1st February 2025
68AQI
2nd February 2025
46AQI
3rd February 2025
53AQI
4th February 2025
39AQI
5th February 2025
40AQI
6th February 2025
32AQI
7th February 2025
39AQI
8th February 2025
31AQI
9th February 2025
32AQI
10th February 2025
31AQI
11th February 2025
34AQI
12th February 2025
47AQI
13th February 2025
33AQI
14th February 2025
46AQI
15th February 2025
32AQI
16th February 2025
54AQI
17th February 2025
47AQI
18th February 2025
42AQI
19th February 2025
41AQI
20th February 2025
36AQI
21st February 2025
37AQI
22nd February 2025
41AQI
23rd February 2025
37AQI
24th February 2025
39AQI
25th February 2025
38AQI
26th February 2025
40AQI
27th February 2025
72AQI
28th February 2025
85AQI
1st March 2025
100AQI
2nd March 2025
120AQI
3rd March 2025
60AQI
4th March 2025
62AQI
5th March 2025
43AQI
6th March 2025
41AQI
7th March 2025
38AQI
8th March 2025
43AQI
9th March 2025
43AQI
10th March 2025
45AQI
11th March 2025
54AQI
12th March 2025
55AQI
13th March 2025
62AQI
14th March 2025
56AQI
15th March 2025
41AQI
16th March 2025
29AQI
17th March 2025
45AQI
18th March 2025
30AQI
19th March 2025
43AQI
20th March 2025
45AQI
21st March 2025
60AQI
22nd March 2025
62AQI
23rd March 2025
69AQI
24th March 2025
67AQI
25th March 2025
83AQI
26th March 2025
76AQI
27th March 2025
93AQI
28th March 2025
60AQI
29th March 2025
53AQI
30th March 2025
43AQI
31st March 2025
43AQI
1st April 2025
49AQI
2nd April 2025
43AQI
3rd April 2025
30AQI
4th April 2025
36AQI
5th April 2025
44AQI
6th April 2025
47AQI
7th April 2025
47AQI
8th April 2025
43AQI
9th April 2025
61AQI
10th April 2025
62AQI
11th April 2025
60AQI
12th April 2025
65AQI
13th April 2025
46AQI
14th April 2025
49AQI
15th April 2025
31AQI
16th April 2025
48AQI
17th April 2025
52AQI
18th April 2025
63AQI
19th April 2025
60AQI
20th April 2025
54AQI
21st April 2025
47AQI
22nd April 2025
58AQI
23rd April 2025
44AQI
24th April 2025
42AQI
25th April 2025
59AQI
26th April 2025
60AQI
27th April 2025
58AQI
28th April 2025
50AQI
29th April 2025
48AQI
30th April 2025
58AQI
1st May 2025
55AQI
2nd May 2025
41AQI
3rd May 2025
50AQI
4th May 2025
39AQI
5th May 2025
44AQI
6th May 2025
38AQI
7th May 2025
34AQI
8th May 2025
38AQI
9th May 2025
40AQI
10th May 2025
37AQI
11th May 2025
39AQI
12th May 2025
51AQI
13th May 2025
55AQI
14th May 2025
61AQI
15th May 2025
59AQI
16th May 2025
64AQI
17th May 2025
50AQI
18th May 2025
52AQI
19th May 2025
60AQI
20th May 2025
65AQI
21st May 2025
71AQI
22nd May 2025
48AQI
23rd May 2025
54AQI
24th May 2025
44AQI
25th May 2025
29AQI
26th May 2025
39AQI
27th May 2025
40AQI
28th May 2025
44AQI
29th May 2025
49AQI
30th May 2025
44AQI
31st May 2025
41AQI
1st June 2025
45AQI
2nd June 2025
54AQI
3rd June 2025
35AQI
4th June 2025
47AQI
5th June 2025
46AQI
6th June 2025
55AQI
7th June 2025
58AQI
8th June 2025
70AQI
9th June 2025
60AQI
10th June 2025
40AQI
11th June 2025
48AQI
12th June 2025
58AQI
13th June 2025
57AQI
14th June 2025
59AQI
15th June 2025
39AQI
16th June 2025
42AQI
17th June 2025
38AQI
18th June 2025
47AQI
19th June 2025
50AQI
20th June 2025
58AQI
21st June 2025
61AQI
22nd June 2025
68AQI
23rd June 2025
56AQI
24th June 2025
53AQI
25th June 2025
57AQI
26th June 2025
50AQI
27th June 2025
55AQI
28th June 2025
57AQI
29th June 2025
58AQI
30th June 2025
59AQI
1st July 2025
60AQI
2nd July 2025
84AQI
3rd July 2025
98AQI
4th July 2025
110AQI
5th July 2025
94AQI
6th July 2025
73AQI
7th July 2025
68AQI
8th July 2025
72AQI
9th July 2025
75AQI
10th July 2025
78AQI
11th July 2025
62AQI
12th July 2025
60AQI
13th July 2025
54AQI
14th July 2025
45AQI
15th July 2025
50AQI
16th July 2025
57AQI
17th July 2025
48AQI
18th July 2025
43AQI
19th July 2025
43AQI
20th July 2025
41AQI
21st July 2025
40AQI
22nd July 2025
37AQI
23rd July 2025
43AQI
24th July 2025
47AQI
25th July 2025
33AQI
26th July 2025
28AQI
27th July 2025
29AQI
28th July 2025
36AQI
29th July 2025
41AQI
30th July 2025
41AQI
31st July 2025
39AQI
1st August 2025
43AQI

42AQI

43AQI

57AQI

50AQI

48AQI

53AQI

56AQI

43AQI

No. of days

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

202550AQI

25
6
23
5
14
16
1
17
13
20
11
12
18
17
13
1
1
129
82
2

Highest AQI recorded in

March

57AQI

Lowest AQI recorded in

January

42AQI

202445AQI

29
2
22
6
1
18
13
7
21
2
12
19
16
14
27
4
23
8
20
10
25
6
20
10
31
250
113
3

Highest AQI recorded in

April

64AQI

Lowest AQI recorded in

December

32AQI

202349AQI

24
7
25
3
16
15
10
20
13
18
7
23
14
17
25
6
19
11
22
9
18
11
22
9
215
149

Highest AQI recorded in

June

59AQI

Lowest AQI recorded in

August

40AQI

202247AQI

27
4
19
3
16
15
15
15
9
22
10
20
15
8
1
26
2
26
5
25
5
31
220
99

Highest AQI recorded in

May

61AQI

Lowest AQI recorded in

December

36AQI

202145AQI

23
8
21
6
1
21
8
16
5
13
18
10
20
19
12
25
6
23
7
22
9
22
8
30
1
245
108
1

Highest AQI recorded in

June

58AQI

Lowest AQI recorded in

January

38AQI

202046AQI

8
4
1
15
6
9
9
15
15
22
9
11
16
4
17
2
26
5
25
5
30
1
178
72
5

Highest AQI recorded in

August

66AQI

Lowest AQI recorded in

September

35AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
50AQI
Least Polluted Year Recorded
2024(Avg.)
45AQI

Niihama's annual 2025 AQI (50) shows an average percentage change of 8.1% (worsened AQI) compared to previous years: 2020 (46), 2021 (45), 2022 (47), 2023 (49), 2024 (45).