Niimi, Okayama, 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
Niimi, Okayama, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Aug 2021
66AQILowest AQI recorded on
13th Aug 2021
10AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Niimi, Okayama, 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
3PM2nd Aug
56AQI
Avg. Lowest Time
3AM3rd Aug
39AQI
In the last 24 hours,
Niimi's AQI reached its highest point of 56 at 3 PM during the Night, 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
Niimi, Okayama, 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 2025715 AMAQI
4th Jul 2025726 AMAQI
4th Jul 2025717 AMAQI
4th Jul 2025728 AMAQI
4th Jul 2025919 AMAQI
4th Jul 202510410 AMAQI
4th Jul 202512211 AMAQI
4th Jul 202513412 PMAQI
4th Jul 20251221 PMAQI
4th Jul 20251172 PMAQI
4th Jul 20251323 PMAQI
4th Jul 20251344 PMAQI
4th Jul 20251375 PMAQI
4th Jul 20251386 PMAQI
4th Jul 20251487 PMAQI
4th Jul 20251368 PMAQI
4th Jul 2025999 PMAQI
4th Jul 202510010 PMAQI
4th Jul 20259911 PMAQI
5th Jul 20259712 AMAQI
5th Jul 2025871 AMAQI
5th Jul 2025752 AMAQI
5th Jul 2025763 AMAQI
5th Jul 2025804 AMAQI
25°C21/30°C
5th Jul 2025845 AMAQI
5th Jul 2025846 AMAQI
5th Jul 2025827 AMAQI
5th Jul 2025808 AMAQI
5th Jul 20251099 AMAQI
5th Jul 20259910 AMAQI
5th Jul 20257511 AMAQI
5th Jul 20256912 PMAQI
5th Jul 2025681 PMAQI
5th Jul 2025682 PMAQI
5th Jul 2025653 PMAQI
5th Jul 2025644 PMAQI
5th Jul 2025625 PMAQI
5th Jul 2025646 PMAQI
5th Jul 2025637 PMAQI
5th Jul 2025728 PMAQI
5th Jul 2025749 PMAQI
5th Jul 20257510 PMAQI
5th Jul 20257611 PMAQI
6th Jul 20257412 AMAQI
6th Jul 2025781 AMAQI
6th Jul 2025842 AMAQI
6th Jul 2025833 AMAQI
6th Jul 2025844 AMAQI
24°C20/29°C
6th Jul 2025815 AMAQI
6th Jul 2025826 AMAQI
6th Jul 2025847 AMAQI
6th Jul 2025818 AMAQI
6th Jul 2025699 AMAQI
6th Jul 20255610 AMAQI
6th Jul 20255211 AMAQI
6th Jul 20254912 PMAQI
6th Jul 2025521 PMAQI
6th Jul 2025532 PMAQI
6th Jul 2025513 PMAQI
6th Jul 2025524 PMAQI
6th Jul 2025475 PMAQI
6th Jul 2025466 PMAQI
6th Jul 2025517 PMAQI
6th Jul 2025608 PMAQI
6th Jul 2025689 PMAQI
6th Jul 20256910 PMAQI
6th Jul 20256811 PMAQI
7th Jul 20256812 AMAQI
7th Jul 2025731 AMAQI
7th Jul 2025802 AMAQI
7th Jul 2025803 AMAQI
7th Jul 2025794 AMAQI
24°C19/30°C
7th Jul 2025775 AMAQI
7th Jul 2025776 AMAQI
7th Jul 2025787 AMAQI
7th Jul 2025778 AMAQI
7th Jul 2025479 AMAQI
7th Jul 20253910 AMAQI
7th Jul 20254211 AMAQI
7th Jul 20255012 PMAQI
7th Jul 2025561 PMAQI
7th Jul 2025572 PMAQI
7th Jul 2025563 PMAQI
7th Jul 2025564 PMAQI
7th Jul 2025605 PMAQI
7th Jul 2025626 PMAQI
7th Jul 2025607 PMAQI
7th Jul 2025618 PMAQI
7th Jul 2025679 PMAQI
7th Jul 20256410 PMAQI
7th Jul 20256711 PMAQI
8th Jul 20256612 AMAQI
8th Jul 2025721 AMAQI
8th Jul 2025762 AMAQI
8th Jul 2025773 AMAQI
8th Jul 2025754 AMAQI
25°C19/31°C
8th Jul 2025735 AMAQI
8th Jul 2025736 AMAQI
8th Jul 2025737 AMAQI
8th Jul 2025728 AMAQI
8th Jul 2025609 AMAQI
8th Jul 20255910 AMAQI
8th Jul 20255611 AMAQI
8th Jul 20255912 PMAQI
8th Jul 2025601 PMAQI
8th Jul 2025592 PMAQI
8th Jul 2025603 PMAQI
8th Jul 2025624 PMAQI
8th Jul 2025625 PMAQI
8th Jul 2025606 PMAQI
8th Jul 2025567 PMAQI
8th Jul 2025578 PMAQI
8th Jul 2025649 PMAQI
8th Jul 20256410 PMAQI
8th Jul 20256511 PMAQI
9th Jul 20256812 AMAQI
9th Jul 2025711 AMAQI
9th Jul 2025742 AMAQI
9th Jul 2025743 AMAQI
9th Jul 2025724 AMAQI
24°C20/29°C
9th Jul 2025725 AMAQI
9th Jul 2025726 AMAQI
9th Jul 2025727 AMAQI
9th Jul 2025718 AMAQI
9th Jul 2025749 AMAQI
9th Jul 20258010 AMAQI
9th Jul 20258611 AMAQI
9th Jul 20258012 PMAQI
9th Jul 2025781 PMAQI
9th Jul 2025742 PMAQI
9th Jul 2025723 PMAQI
9th Jul 2025764 PMAQI
9th Jul 2025785 PMAQI
9th Jul 2025806 PMAQI
9th Jul 2025847 PMAQI
9th Jul 2025828 PMAQI
9th Jul 2025779 PMAQI
9th Jul 20257410 PMAQI
9th Jul 20257411 PMAQI
10th Jul 20257412 AMAQI
10th Jul 2025741 AMAQI
10th Jul 2025722 AMAQI
10th Jul 2025723 AMAQI
10th Jul 2025734 AMAQI
24°C20/29°C
10th Jul 2025745 AMAQI
10th Jul 2025736 AMAQI
10th Jul 2025747 AMAQI
10th Jul 2025748 AMAQI
10th Jul 2025789 AMAQI
10th Jul 20257610 AMAQI
10th Jul 20257811 AMAQI
10th Jul 20258712 PMAQI
10th Jul 2025881 PMAQI
10th Jul 2025962 PMAQI
10th Jul 2025943 PMAQI
10th Jul 2025904 PMAQI
10th Jul 2025905 PMAQI
10th Jul 2025886 PMAQI
10th Jul 2025867 PMAQI
10th Jul 2025798 PMAQI
10th Jul 2025769 PMAQI
10th Jul 20257510 PMAQI
10th Jul 20257411 PMAQI
11th Jul 20257412 AMAQI
11th Jul 2025731 AMAQI
11th Jul 2025732 AMAQI
11th Jul 2025743 AMAQI
11th Jul 2025744 AMAQI
25°C20/30°C
11th Jul 2025755 AMAQI
11th Jul 2025756 AMAQI
11th Jul 2025757 AMAQI
11th Jul 2025758 AMAQI
11th Jul 2025709 AMAQI
11th Jul 20256810 AMAQI
11th Jul 20256011 AMAQI
11th Jul 20255112 PMAQI
11th Jul 2025481 PMAQI
11th Jul 2025482 PMAQI
11th Jul 2025403 PMAQI
11th Jul 2025454 PMAQI
11th Jul 2025495 PMAQI
11th Jul 2025476 PMAQI
11th Jul 2025407 PMAQI
11th Jul 2025478 PMAQI
11th Jul 2025619 PMAQI
11th Jul 20256110 PMAQI
11th Jul 20256111 PMAQI
12th Jul 20256112 AMAQI
12th Jul 2025661 AMAQI
12th Jul 2025722 AMAQI
12th Jul 2025733 AMAQI
12th Jul 2025724 AMAQI
23°C20/28°C
12th Jul 2025705 AMAQI
12th Jul 2025706 AMAQI
12th Jul 2025707 AMAQI
12th Jul 2025708 AMAQI
12th Jul 2025429 AMAQI
12th Jul 20253410 AMAQI
12th Jul 20253511 AMAQI
12th Jul 20253812 PMAQI
12th Jul 2025461 PMAQI
12th Jul 2025442 PMAQI
12th Jul 2025403 PMAQI
12th Jul 2025424 PMAQI
12th Jul 2025445 PMAQI
12th Jul 2025446 PMAQI
12th Jul 2025427 PMAQI
12th Jul 2025498 PMAQI
12th Jul 2025589 PMAQI
12th Jul 20255810 PMAQI
12th Jul 20255911 PMAQI
13th Jul 20255912 AMAQI
13th Jul 2025631 AMAQI
13th Jul 2025682 AMAQI
13th Jul 2025683 AMAQI
13th Jul 2025674 AMAQI
23°C20/27°C
13th Jul 2025655 AMAQI
13th Jul 2025646 AMAQI
13th Jul 2025647 AMAQI
13th Jul 2025648 AMAQI
13th Jul 2025559 AMAQI
13th Jul 20254010 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20254112 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025472 PMAQI
13th Jul 2025393 PMAQI
13th Jul 2025344 PMAQI
13th Jul 2025345 PMAQI
13th Jul 2025336 PMAQI
13th Jul 2025347 PMAQI
13th Jul 2025448 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255411 PMAQI
14th Jul 20255512 AMAQI
14th Jul 2025581 AMAQI
14th Jul 2025642 AMAQI
14th Jul 2025643 AMAQI
14th Jul 2025634 AMAQI
23°C20/26°C
14th Jul 2025615 AMAQI
14th Jul 2025616 AMAQI
14th Jul 2025617 AMAQI
14th Jul 2025618 AMAQI
14th Jul 2025289 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251712 PMAQI
14th Jul 2025221 PMAQI
14th Jul 2025252 PMAQI
14th Jul 2025203 PMAQI
14th Jul 2025194 PMAQI
14th Jul 2025185 PMAQI
14th Jul 2025216 PMAQI
14th Jul 2025227 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025499 PMAQI
14th Jul 20255010 PMAQI
14th Jul 20255111 PMAQI
15th Jul 20255012 AMAQI
15th Jul 2025541 AMAQI
15th Jul 2025602 AMAQI
15th Jul 2025603 AMAQI
15th Jul 2025584 AMAQI
21°C18/23°C
15th Jul 2025565 AMAQI
15th Jul 2025566 AMAQI
15th Jul 2025577 AMAQI
15th Jul 2025568 AMAQI
15th Jul 2025309 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252811 AMAQI
15th Jul 20253812 PMAQI
15th Jul 2025431 PMAQI
15th Jul 2025422 PMAQI
15th Jul 2025503 PMAQI
15th Jul 2025534 PMAQI
15th Jul 2025535 PMAQI
15th Jul 2025556 PMAQI
15th Jul 2025587 PMAQI
15th Jul 2025588 PMAQI
15th Jul 2025599 PMAQI
15th Jul 20255610 PMAQI
15th Jul 20255511 PMAQI
16th Jul 20255512 AMAQI
16th Jul 2025561 AMAQI
16th Jul 2025562 AMAQI
16th Jul 2025563 AMAQI
16th Jul 2025554 AMAQI
21°C16/27°C
16th Jul 2025545 AMAQI
16th Jul 2025546 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025548 AMAQI
16th Jul 2025579 AMAQI
16th Jul 20255910 AMAQI
16th Jul 20255811 AMAQI
16th Jul 20255512 PMAQI
16th Jul 2025551 PMAQI
16th Jul 2025572 PMAQI
16th Jul 2025573 PMAQI
16th Jul 2025594 PMAQI
16th Jul 2025615 PMAQI
16th Jul 2025646 PMAQI
16th Jul 2025647 PMAQI
16th Jul 2025648 PMAQI
16th Jul 2025609 PMAQI
16th Jul 20256010 PMAQI
16th Jul 20256111 PMAQI
17th Jul 20256012 AMAQI
17th Jul 2025571 AMAQI
17th Jul 2025562 AMAQI
17th Jul 2025553 AMAQI
17th Jul 2025554 AMAQI
22°C18/28°C
17th Jul 2025565 AMAQI
17th Jul 2025566 AMAQI
17th Jul 2025567 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025629 AMAQI
17th Jul 20255810 AMAQI
17th Jul 20254811 AMAQI
17th Jul 20254012 PMAQI
17th Jul 2025341 PMAQI
17th Jul 2025252 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025234 PMAQI
17th Jul 2025235 PMAQI
17th Jul 2025226 PMAQI
17th Jul 2025187 PMAQI
17th Jul 2025278 PMAQI
17th Jul 2025439 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254212 AMAQI
18th Jul 2025481 AMAQI
18th Jul 2025552 AMAQI
18th Jul 2025563 AMAQI
18th Jul 2025554 AMAQI
22°C19/27°C
18th Jul 2025545 AMAQI
18th Jul 2025546 AMAQI
18th Jul 2025547 AMAQI
18th Jul 2025548 AMAQI
18th Jul 2025299 AMAQI
18th Jul 20251910 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025261 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025283 PMAQI
18th Jul 2025304 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025307 PMAQI
18th Jul 2025408 PMAQI
18th Jul 2025499 PMAQI
18th Jul 20254510 PMAQI
18th Jul 20254311 PMAQI
19th Jul 20254312 AMAQI
19th Jul 2025481 AMAQI
19th Jul 2025532 AMAQI
19th Jul 2025533 AMAQI
19th Jul 2025524 AMAQI
22°C20/24°C
19th Jul 2025515 AMAQI
19th Jul 2025506 AMAQI
19th Jul 2025507 AMAQI
19th Jul 2025518 AMAQI
19th Jul 2025439 AMAQI
19th Jul 20253210 AMAQI
19th Jul 20252511 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025222 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025256 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025328 PMAQI
19th Jul 2025409 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253911 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025441 AMAQI
20th Jul 2025512 AMAQI
20th Jul 2025513 AMAQI
20th Jul 2025494 AMAQI
23°C19/28°C
20th Jul 2025475 AMAQI
20th Jul 2025466 AMAQI
20th Jul 2025477 AMAQI
20th Jul 2025478 AMAQI
20th Jul 2025349 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252012 PMAQI
20th Jul 2025231 PMAQI
20th Jul 2025232 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025214 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025236 PMAQI
20th Jul 2025227 PMAQI
20th Jul 2025298 PMAQI
20th Jul 2025399 PMAQI
20th Jul 20253910 PMAQI
20th Jul 20253911 PMAQI
21st Jul 20253812 AMAQI
21st Jul 2025421 AMAQI
21st Jul 2025462 AMAQI
21st Jul 2025463 AMAQI
21st Jul 2025444 AMAQI
24°C19/30°C
21st Jul 2025425 AMAQI
21st Jul 2025436 AMAQI
21st Jul 2025427 AMAQI
21st Jul 2025428 AMAQI
21st Jul 2025319 AMAQI
21st Jul 20253110 AMAQI
21st Jul 20253211 AMAQI
21st Jul 20253112 PMAQI
21st Jul 2025281 PMAQI
21st Jul 2025272 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025375 PMAQI
21st Jul 2025416 PMAQI
21st Jul 2025467 PMAQI
21st Jul 2025448 PMAQI
21st Jul 2025399 PMAQI
21st Jul 20254010 PMAQI
21st Jul 20254111 PMAQI
22nd Jul 20254012 AMAQI
22nd Jul 2025421 AMAQI
22nd Jul 2025422 AMAQI
22nd Jul 2025423 AMAQI
22nd Jul 2025414 AMAQI
24°C20/30°C
22nd Jul 2025405 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025397 AMAQI
22nd Jul 2025408 AMAQI
22nd Jul 2025449 AMAQI
22nd Jul 20254010 AMAQI
22nd Jul 20253911 AMAQI
22nd Jul 20254112 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025462 PMAQI
22nd Jul 2025463 PMAQI
22nd Jul 2025454 PMAQI
22nd Jul 2025455 PMAQI
22nd Jul 2025526 PMAQI
22nd Jul 2025567 PMAQI
22nd Jul 2025518 PMAQI
22nd Jul 2025509 PMAQI
22nd Jul 20255410 PMAQI
22nd Jul 20255411 PMAQI
23rd Jul 20255312 AMAQI
23rd Jul 2025471 AMAQI
23rd Jul 2025402 AMAQI
23rd Jul 2025413 AMAQI
23rd Jul 2025404 AMAQI
25°C20/31°C
23rd Jul 2025405 AMAQI
23rd Jul 2025406 AMAQI
23rd Jul 2025407 AMAQI
23rd Jul 2025408 AMAQI
23rd Jul 2025509 AMAQI
23rd Jul 20255110 AMAQI
23rd Jul 20254811 AMAQI
23rd Jul 20253812 PMAQI
23rd Jul 2025441 PMAQI
23rd Jul 2025432 PMAQI
23rd Jul 2025443 PMAQI
23rd Jul 2025464 PMAQI
23rd Jul 2025365 PMAQI
23rd Jul 2025396 PMAQI
23rd Jul 2025437 PMAQI
23rd Jul 2025448 PMAQI
23rd Jul 2025439 PMAQI
23rd Jul 20254410 PMAQI
23rd Jul 20254011 PMAQI
24th Jul 20254412 AMAQI
24th Jul 2025431 AMAQI
24th Jul 2025422 AMAQI
24th Jul 2025423 AMAQI
24th Jul 2025424 AMAQI
25°C20/31°C
24th Jul 2025425 AMAQI
24th Jul 2025426 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025599 AMAQI
24th Jul 20255110 AMAQI
24th Jul 20254311 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025451 PMAQI
24th Jul 2025442 PMAQI
24th Jul 2025403 PMAQI
24th Jul 2025404 PMAQI
24th Jul 2025465 PMAQI
24th Jul 2025456 PMAQI
24th Jul 2025437 PMAQI
24th Jul 2025428 PMAQI
24th Jul 2025439 PMAQI
24th Jul 20254310 PMAQI
24th Jul 20253911 PMAQI
25th Jul 20253912 AMAQI
25th Jul 2025401 AMAQI
25th Jul 2025432 AMAQI
25th Jul 2025423 AMAQI
25th Jul 2025434 AMAQI
25°C19/31°C
25th Jul 2025435 AMAQI
25th Jul 2025436 AMAQI
25th Jul 2025437 AMAQI
25th Jul 2025438 AMAQI
25th Jul 2025369 AMAQI
25th Jul 20253310 AMAQI
25th Jul 20252711 AMAQI
25th Jul 20252312 PMAQI
25th Jul 2025201 PMAQI
25th Jul 2025192 PMAQI
25th Jul 2025213 PMAQI
25th Jul 2025224 PMAQI
25th Jul 2025245 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025258 PMAQI
25th Jul 2025319 PMAQI
25th Jul 20253110 PMAQI
25th Jul 20253111 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025351 AMAQI
26th Jul 2025422 AMAQI
26th Jul 2025433 AMAQI
26th Jul 2025404 AMAQI
24°C20/30°C
26th Jul 2025385 AMAQI
26th Jul 2025386 AMAQI
26th Jul 2025387 AMAQI
26th Jul 2025388 AMAQI
26th Jul 2025309 AMAQI
26th Jul 20251810 AMAQI
26th Jul 20251811 AMAQI
26th Jul 20251612 PMAQI
26th Jul 2025171 PMAQI
26th Jul 2025182 PMAQI
26th Jul 2025183 PMAQI
26th Jul 2025214 PMAQI
26th Jul 2025185 PMAQI
26th Jul 2025146 PMAQI
26th Jul 2025197 PMAQI
26th Jul 2025268 PMAQI
26th Jul 2025319 PMAQI
26th Jul 20253110 PMAQI
26th Jul 20252911 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025321 AMAQI
27th Jul 2025382 AMAQI
27th Jul 2025383 AMAQI
27th Jul 2025364 AMAQI
24°C20/30°C
27th Jul 2025345 AMAQI
27th Jul 2025356 AMAQI
27th Jul 2025357 AMAQI
27th Jul 2025358 AMAQI
27th Jul 2025309 AMAQI
27th Jul 20252010 AMAQI
27th Jul 20251811 AMAQI
27th Jul 20251612 PMAQI
27th Jul 2025211 PMAQI
27th Jul 2025222 PMAQI
27th Jul 2025193 PMAQI
27th Jul 2025244 PMAQI
27th Jul 2025245 PMAQI
27th Jul 2025226 PMAQI
27th Jul 2025237 PMAQI
27th Jul 2025258 PMAQI
27th Jul 2025269 PMAQI
27th Jul 20252610 PMAQI
27th Jul 20252811 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025301 AMAQI
28th Jul 2025352 AMAQI
28th Jul 2025353 AMAQI
28th Jul 2025334 AMAQI
24°C19/30°C
28th Jul 2025325 AMAQI
28th Jul 2025326 AMAQI
28th Jul 2025327 AMAQI
28th Jul 2025328 AMAQI
28th Jul 2025229 AMAQI
28th Jul 20252110 AMAQI
28th Jul 20252611 AMAQI
28th Jul 20253112 PMAQI
28th Jul 2025301 PMAQI
28th Jul 2025302 PMAQI
28th Jul 2025303 PMAQI
28th Jul 2025284 PMAQI
28th Jul 2025285 PMAQI
28th Jul 2025286 PMAQI
28th Jul 2025307 PMAQI
28th Jul 2025318 PMAQI
28th Jul 2025309 PMAQI
28th Jul 20253010 PMAQI
28th Jul 20253011 PMAQI
29th Jul 20253112 AMAQI
29th Jul 2025311 AMAQI
29th Jul 2025322 AMAQI
29th Jul 2025323 AMAQI
29th Jul 2025324 AMAQI
26°C20/33°C
29th Jul 2025325 AMAQI
29th Jul 2025326 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025318 AMAQI
29th Jul 2025329 AMAQI
29th Jul 20253310 AMAQI
29th Jul 20254011 AMAQI
29th Jul 20254112 PMAQI
29th Jul 2025381 PMAQI
29th Jul 2025402 PMAQI
29th Jul 2025383 PMAQI
29th Jul 2025424 PMAQI
29th Jul 2025465 PMAQI
29th Jul 2025526 PMAQI
29th Jul 2025527 PMAQI
29th Jul 2025468 PMAQI
29th Jul 2025429 PMAQI
29th Jul 20254110 PMAQI
29th Jul 20254511 PMAQI
30th Jul 20254412 AMAQI
30th Jul 2025381 AMAQI
30th Jul 2025322 AMAQI
30th Jul 2025323 AMAQI
30th Jul 2025324 AMAQI
26°C21/33°C
30th Jul 2025335 AMAQI
30th Jul 2025336 AMAQI
30th Jul 2025327 AMAQI
30th Jul 2025338 AMAQI
30th Jul 2025529 AMAQI
30th Jul 20255910 AMAQI
30th Jul 20255711 AMAQI
30th Jul 20254712 PMAQI
30th Jul 2025481 PMAQI
30th Jul 2025522 PMAQI
30th Jul 2025533 PMAQI
30th Jul 2025554 PMAQI
30th Jul 2025545 PMAQI
30th Jul 2025556 PMAQI
30th Jul 2025547 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025509 PMAQI
30th Jul 20254810 PMAQI
30th Jul 20254811 PMAQI
31st Jul 20254812 AMAQI
31st Jul 2025411 AMAQI
31st Jul 2025352 AMAQI
31st Jul 2025353 AMAQI
31st Jul 2025344 AMAQI
27°C21/33°C
31st Jul 2025335 AMAQI
31st Jul 2025336 AMAQI
31st Jul 2025337 AMAQI
31st Jul 2025338 AMAQI
31st Jul 2025339 AMAQI
31st Jul 20253310 AMAQI
31st Jul 20255411 AMAQI
31st Jul 20256612 PMAQI
31st Jul 2025561 PMAQI
31st Jul 2025562 PMAQI
31st Jul 2025603 PMAQI
31st Jul 2025624 PMAQI
31st Jul 2025625 PMAQI
31st Jul 2025626 PMAQI
31st Jul 2025597 PMAQI
31st Jul 2025538 PMAQI
31st Jul 2025449 PMAQI
31st Jul 20254110 PMAQI
31st Jul 20253911 PMAQI
1st Aug 20254012 AMAQI
1st Aug 2025351 AMAQI
1st Aug 2025322 AMAQI
1st Aug 2025303 AMAQI
1st Aug 2025344 AMAQI
26°C21/33°C
1st Aug 2025335 AMAQI
1st Aug 2025346 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025368 AMAQI
1st Aug 2025499 AMAQI
1st Aug 20254410 AMAQI
1st Aug 20255011 AMAQI
1st Aug 20255412 PMAQI
1st Aug 2025521 PMAQI
1st Aug 2025522 PMAQI
1st Aug 2025483 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025566 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025498 PMAQI
1st Aug 2025519 PMAQI
1st Aug 20254610 PMAQI
1st Aug 20254211 PMAQI
2nd Aug 20254412 AMAQI
2nd Aug 2025361 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025363 AMAQI
2nd Aug 2025404 AMAQI
25°C20/32°C
2nd Aug 2025405 AMAQI
2nd Aug 2025416 AMAQI
2nd Aug 2025397 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025479 AMAQI
2nd Aug 20254410 AMAQI
2nd Aug 20254811 AMAQI
2nd Aug 20253912 PMAQI
2nd Aug 2025421 PMAQI
2nd Aug 2025552 PMAQI
2nd Aug 2025563 PMAQI
2nd Aug 2025464 PMAQI
2nd Aug 2025485 PMAQI
2nd Aug 2025486 PMAQI
2nd Aug 2025437 PMAQI
2nd Aug 2025488 PMAQI
2nd Aug 2025449 PMAQI
2nd Aug 20254310 PMAQI
2nd Aug 20254611 PMAQI
3rd Aug 20254312 AMAQI
3rd Aug 2025401 AMAQI
3rd Aug 2025402 AMAQI
3rd Aug 2025393 AMAQI
3rd Aug 2025434 AMAQI
--°C/°C
5 AM
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 AM
53AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
10 AM - 7 PM
46AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 AM (Avg. 53), while the lowest AQI was between 10 AM to 7 PM (Avg. 46).
Night time
Avg. Highest Time
12 AM - 4 AM
53AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
8 PM - 11 PM
51AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 53), while the lowest AQI was between 8 PM to 11 PM (Avg. 51).
2025 Days Vs Air Quality
Niimi, Okayama, Japan
2025
71%
151
29%
61
0.4%
1
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
151 DaysModerate
61 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 71%
Health Risk Level:
Low
In 2025, 71% of 214 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Niimi, Okayama, 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
27AQI
27AQI
2nd January 2025
32AQI
32AQI
3rd January 2025
29AQI
29AQI
4th January 2025
28AQI
28AQI
5th January 2025
28AQI
28AQI
6th January 2025
33AQI
33AQI
7th January 2025
29AQI
29AQI
8th January 2025
29AQI
29AQI
9th January 2025
26AQI
26AQI
10th January 2025
25AQI
25AQI
11th January 2025
24AQI
24AQI
12th January 2025
27AQI
27AQI
13th January 2025
29AQI
29AQI
14th January 2025
42AQI
42AQI
15th January 2025
35AQI
35AQI
16th January 2025
33AQI
33AQI
17th January 2025
30AQI
30AQI
18th January 2025
29AQI
29AQI
19th January 2025
38AQI
38AQI
20th January 2025
37AQI
37AQI
21st January 2025
39AQI
39AQI
22nd January 2025
52AQI
52AQI
23rd January 2025
59AQI
59AQI
24th January 2025
56AQI
56AQI
25th January 2025
41AQI
41AQI
26th January 2025
37AQI
37AQI
27th January 2025
32AQI
32AQI
28th January 2025
33AQI
33AQI
29th January 2025
31AQI
31AQI
30th January 2025
42AQI
42AQI
31st January 2025
63AQI
63AQI
1st February 2025
60AQI
60AQI
2nd February 2025
39AQI
39AQI
3rd February 2025
42AQI
42AQI
4th February 2025
37AQI
37AQI
5th February 2025
37AQI
37AQI
6th February 2025
31AQI
31AQI
7th February 2025
31AQI
31AQI
8th February 2025
31AQI
31AQI
9th February 2025
28AQI
28AQI
10th February 2025
30AQI
30AQI
11th February 2025
29AQI
29AQI
12th February 2025
35AQI
35AQI
13th February 2025
30AQI
30AQI
14th February 2025
33AQI
33AQI
15th February 2025
28AQI
28AQI
16th February 2025
32AQI
32AQI
17th February 2025
37AQI
37AQI
18th February 2025
32AQI
32AQI
19th February 2025
32AQI
32AQI
20th February 2025
29AQI
29AQI
21st February 2025
31AQI
31AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
32AQI
32AQI
26th February 2025
42AQI
42AQI
27th February 2025
44AQI
44AQI
28th February 2025
52AQI
52AQI
1st March 2025
57AQI
57AQI
2nd March 2025
62AQI
62AQI
3rd March 2025
44AQI
44AQI
4th March 2025
40AQI
40AQI
5th March 2025
32AQI
32AQI
6th March 2025
36AQI
36AQI
7th March 2025
33AQI
33AQI
8th March 2025
35AQI
35AQI
9th March 2025
38AQI
38AQI
10th March 2025
38AQI
38AQI
11th March 2025
41AQI
41AQI
12th March 2025
36AQI
36AQI
13th March 2025
46AQI
46AQI
14th March 2025
39AQI
39AQI
15th March 2025
32AQI
32AQI
16th March 2025
24AQI
24AQI
17th March 2025
29AQI
29AQI
18th March 2025
27AQI
27AQI
19th March 2025
35AQI
35AQI
20th March 2025
40AQI
40AQI
21st March 2025
51AQI
51AQI
22nd March 2025
54AQI
54AQI
23rd March 2025
58AQI
58AQI
24th March 2025
55AQI
55AQI
25th March 2025
72AQI
72AQI
26th March 2025
68AQI
68AQI
27th March 2025
78AQI
78AQI
28th March 2025
43AQI
43AQI
29th March 2025
43AQI
43AQI
30th March 2025
35AQI
35AQI
31st March 2025
37AQI
37AQI
1st April 2025
30AQI
30AQI
2nd April 2025
28AQI
28AQI
3rd April 2025
23AQI
23AQI
4th April 2025
32AQI
32AQI
5th April 2025
34AQI
34AQI
6th April 2025
43AQI
43AQI
7th April 2025
39AQI
39AQI
8th April 2025
45AQI
45AQI
9th April 2025
54AQI
54AQI
10th April 2025
57AQI
57AQI
11th April 2025
55AQI
55AQI
12th April 2025
46AQI
46AQI
13th April 2025
35AQI
35AQI
14th April 2025
40AQI
40AQI
15th April 2025
24AQI
24AQI
16th April 2025
39AQI
39AQI
17th April 2025
44AQI
44AQI
18th April 2025
56AQI
56AQI
19th April 2025
55AQI
55AQI
20th April 2025
47AQI
47AQI
21st April 2025
34AQI
34AQI
22nd April 2025
44AQI
44AQI
23rd April 2025
21AQI
21AQI
24th April 2025
28AQI
28AQI
25th April 2025
65AQI
65AQI
26th April 2025
48AQI
48AQI
27th April 2025
55AQI
55AQI
28th April 2025
45AQI
45AQI
29th April 2025
50AQI
50AQI
30th April 2025
54AQI
54AQI
1st May 2025
53AQI
53AQI
2nd May 2025
37AQI
37AQI
3rd May 2025
47AQI
47AQI
4th May 2025
36AQI
36AQI
5th May 2025
41AQI
41AQI
6th May 2025
30AQI
30AQI
7th May 2025
31AQI
31AQI
8th May 2025
28AQI
28AQI
9th May 2025
35AQI
35AQI
10th May 2025
30AQI
30AQI
11th May 2025
33AQI
33AQI
12th May 2025
48AQI
48AQI
13th May 2025
52AQI
52AQI
14th May 2025
62AQI
62AQI
15th May 2025
58AQI
58AQI
16th May 2025
59AQI
59AQI
17th May 2025
40AQI
40AQI
18th May 2025
42AQI
42AQI
19th May 2025
52AQI
52AQI
20th May 2025
64AQI
64AQI
21st May 2025
64AQI
64AQI
22nd May 2025
40AQI
40AQI
23rd May 2025
53AQI
53AQI
24th May 2025
39AQI
39AQI
25th May 2025
27AQI
27AQI
26th May 2025
30AQI
30AQI
27th May 2025
34AQI
34AQI
28th May 2025
37AQI
37AQI
29th May 2025
42AQI
42AQI
30th May 2025
38AQI
38AQI
31st May 2025
38AQI
38AQI
1st June 2025
45AQI
45AQI
2nd June 2025
52AQI
52AQI
3rd June 2025
30AQI
30AQI
4th June 2025
41AQI
41AQI
5th June 2025
41AQI
41AQI
6th June 2025
54AQI
54AQI
7th June 2025
58AQI
58AQI
8th June 2025
69AQI
69AQI
9th June 2025
58AQI
58AQI
10th June 2025
37AQI
37AQI
11th June 2025
48AQI
48AQI
12th June 2025
55AQI
55AQI
13th June 2025
59AQI
59AQI
14th June 2025
46AQI
46AQI
15th June 2025
37AQI
37AQI
16th June 2025
41AQI
41AQI
17th June 2025
37AQI
37AQI
18th June 2025
49AQI
49AQI
19th June 2025
52AQI
52AQI
20th June 2025
59AQI
59AQI
21st June 2025
61AQI
61AQI
22nd June 2025
65AQI
65AQI
23rd June 2025
47AQI
47AQI
24th June 2025
49AQI
49AQI
25th June 2025
47AQI
47AQI
26th June 2025
47AQI
47AQI
27th June 2025
56AQI
56AQI
28th June 2025
54AQI
54AQI
29th June 2025
59AQI
59AQI
30th June 2025
61AQI
61AQI
1st July 2025
69AQI
69AQI
2nd July 2025
87AQI
87AQI
3rd July 2025
82AQI
82AQI
4th July 2025
103AQI
103AQI
5th July 2025
77AQI
77AQI
6th July 2025
66AQI
66AQI
7th July 2025
65AQI
65AQI
8th July 2025
65AQI
65AQI
9th July 2025
76AQI
76AQI
10th July 2025
79AQI
79AQI
11th July 2025
61AQI
61AQI
12th July 2025
55AQI
55AQI
13th July 2025
52AQI
52AQI
14th July 2025
41AQI
41AQI
15th July 2025
51AQI
51AQI
16th July 2025
58AQI
58AQI
17th July 2025
43AQI
43AQI
18th July 2025
41AQI
41AQI
19th July 2025
38AQI
38AQI
20th July 2025
35AQI
35AQI
21st July 2025
39AQI
39AQI
22nd July 2025
45AQI
45AQI
23rd July 2025
43AQI
43AQI
24th July 2025
44AQI
44AQI
25th July 2025
32AQI
32AQI
26th July 2025
28AQI
28AQI
27th July 2025
28AQI
28AQI
28th July 2025
30AQI
30AQI
29th July 2025
38AQI
38AQI
30th July 2025
45AQI
45AQI
31st July 2025
46AQI
46AQI
1st August 2025
42AQI
42AQI
35AQI
35AQI
44AQI
42AQI
43AQI
50AQI
54AQI
42AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202543AQI
27
4
26
2
22
9
22
8
22
9
15
15
16
14
1
1
151
61
1
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
February35AQI
202433AQI
19
12
26
3
28
3
24
6
28
3
23
7
31
30
1
29
1
31
28
2
31
328
38
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
December28AQI
202335AQI
28
3
28
22
9
20
10
24
7
23
7
27
4
31
29
1
31
24
5
24
6
311
52
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August27AQI
202234AQI
30
1
20
1
23
8
22
8
21
10
24
6
23
2
3
28
1
30
1
28
2
31
283
40
Highest AQI recorded in
May44AQI
Lowest AQI recorded in
August22AQI
202130AQI
28
3
24
4
27
2
20
1
28
3
22
8
31
27
4
29
1
30
1
30
31
327
27
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
December26AQI
202029AQI
11
2
20
1
18
25
5
29
2
18
13
19
30
1
28
2
30
1
228
27
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
September22AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
43AQILeast Polluted Year Recorded
2020(Avg.)
29AQINiimi's annual 2025 AQI (43) shows an average percentage change of 34.7% (worsened AQI) compared to previous years: 2020 (29), 2021 (30), 2022 (34), 2023 (35), 2024 (33).
