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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Koja, Okinawa, 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+

October Air Quality Analysis

Koja, Okinawa, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
6th Oct 2023
113AQI
Lowest AQI recorded on
24th Oct 2024
15AQI

Same Day Analysis (3rd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 38 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2026

Koja, Okinawa, Japan

AQI
Day
Night
.

6 AM2nd Oct 2026

6 PM

5 AM3rd Oct 2026

Day time
Avg. Highest Time
11AM2nd Oct

69AQI

Avg. Lowest Time
6AM2nd Oct

36AQI

Night time
Avg. Highest Time
7PM2nd Oct

64AQI

Avg. Lowest Time
8PM2nd Oct

33AQI

In the last 24 hours,

Koja's AQI reached its highest point of 69 at 11 AM during the Day, while the lowest point, 33, was recorded at 8 PM during the Night between 2nd Oct and 3rd Oct 2026.

Day & Night AQI Trend : Sep - Oct 2026

Koja, Okinawa, Japan

SepOct
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 - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Sep 2026306 AMAQI
4th Sep 2026507 AMAQI
4th Sep 2026258 AMAQI
4th Sep 2026259 AMAQI
4th Sep 20264210 AMAQI
4th Sep 20264611 AMAQI
4th Sep 20262912 PMAQI
4th Sep 2026361 PMAQI
4th Sep 2026382 PMAQI
4th Sep 2026533 PMAQI
4th Sep 2026254 PMAQI
4th Sep 2026445 PMAQI
4th Sep 2026386 PMAQI
4th Sep 2026427 PMAQI
4th Sep 2026408 PMAQI
4th Sep 2026429 PMAQI
4th Sep 20263810 PMAQI
4th Sep 20264011 PMAQI
5th Sep 20264212 AMAQI
5th Sep 2026251 AMAQI
5th Sep 2026212 AMAQI
5th Sep 2026213 AMAQI
5th Sep 2026524 AMAQI
5th Sep 2026385 AMAQI

28°C27/29°C

5th Sep 2026236 AMAQI
5th Sep 2026217 AMAQI
5th Sep 2026258 AMAQI
5th Sep 2026259 AMAQI
5th Sep 20262510 AMAQI
5th Sep 20263111 AMAQI
5th Sep 20262712 PMAQI
5th Sep 2026291 PMAQI
5th Sep 2026292 PMAQI
5th Sep 2026213 PMAQI
5th Sep 2026274 PMAQI
5th Sep 2026295 PMAQI
5th Sep 2026316 PMAQI
5th Sep 2026277 PMAQI
5th Sep 2026318 PMAQI
5th Sep 2026299 PMAQI
5th Sep 20263110 PMAQI
5th Sep 20262311 PMAQI
6th Sep 20262512 AMAQI
6th Sep 2026251 AMAQI
6th Sep 2026252 AMAQI
6th Sep 2026253 AMAQI
6th Sep 2026254 AMAQI
6th Sep 2026255 AMAQI

27°C26/28°C

6th Sep 2026276 AMAQI
6th Sep 2026277 AMAQI
6th Sep 2026278 AMAQI
6th Sep 2026299 AMAQI
6th Sep 20262110 AMAQI
6th Sep 20262111 AMAQI
6th Sep 20262912 PMAQI
6th Sep 2026271 PMAQI
6th Sep 2026252 PMAQI
6th Sep 2026273 PMAQI
6th Sep 2026274 PMAQI
6th Sep 2026385 PMAQI
6th Sep 2026336 PMAQI
6th Sep 2026257 PMAQI
6th Sep 2026238 PMAQI
6th Sep 2026299 PMAQI
6th Sep 20263310 PMAQI
6th Sep 20262111 PMAQI
7th Sep 20262712 AMAQI
7th Sep 2026211 AMAQI
7th Sep 2026272 AMAQI
7th Sep 2026273 AMAQI
7th Sep 2026294 AMAQI
7th Sep 2026255 AMAQI

28°C27/30°C

7th Sep 2026606 AMAQI
7th Sep 2026567 AMAQI
7th Sep 2026588 AMAQI
7th Sep 2026729 AMAQI
7th Sep 20267210 AMAQI
7th Sep 20266811 AMAQI
7th Sep 20268312 PMAQI
7th Sep 2026601 PMAQI
7th Sep 2026552 PMAQI
7th Sep 2026603 PMAQI
7th Sep 2026544 PMAQI
7th Sep 2026405 PMAQI
7th Sep 2026486 PMAQI
7th Sep 2026467 PMAQI
7th Sep 2026388 PMAQI
7th Sep 2026489 PMAQI
7th Sep 20265310 PMAQI
7th Sep 20264611 PMAQI
8th Sep 20265012 AMAQI
8th Sep 2026441 AMAQI
8th Sep 2026462 AMAQI
8th Sep 2026403 AMAQI
8th Sep 2026364 AMAQI
8th Sep 2026315 AMAQI

27°C26/28°C

8th Sep 2026296 AMAQI
8th Sep 2026347 AMAQI
8th Sep 2026368 AMAQI
8th Sep 2026429 AMAQI
8th Sep 20266810 AMAQI
8th Sep 20266811 AMAQI
8th Sep 20266712 PMAQI
8th Sep 2026621 PMAQI
8th Sep 2026602 PMAQI
8th Sep 2026553 PMAQI
8th Sep 2026574 PMAQI
8th Sep 2026575 PMAQI
8th Sep 2026606 PMAQI
8th Sep 2026567 PMAQI
8th Sep 2026608 PMAQI
8th Sep 2026649 PMAQI
8th Sep 20266410 PMAQI
8th Sep 20264911 PMAQI
9th Sep 20265012 AMAQI
9th Sep 2026541 AMAQI
9th Sep 2026572 AMAQI
9th Sep 2026543 AMAQI
9th Sep 2026504 AMAQI
9th Sep 2026505 AMAQI

27°C26/28°C

9th Sep 2026516 AMAQI
9th Sep 2026487 AMAQI
9th Sep 2026508 AMAQI
9th Sep 2026449 AMAQI
9th Sep 20263610 AMAQI
9th Sep 20263811 AMAQI
9th Sep 20264212 PMAQI
9th Sep 2026481 PMAQI
9th Sep 2026522 PMAQI
9th Sep 2026553 PMAQI
9th Sep 2026524 PMAQI
9th Sep 2026335 PMAQI
9th Sep 2026446 PMAQI
9th Sep 2026467 PMAQI
9th Sep 2026338 PMAQI
9th Sep 2026339 PMAQI
9th Sep 20263310 PMAQI
9th Sep 20262911 PMAQI
10th Sep 20262712 AMAQI
10th Sep 2026271 AMAQI
10th Sep 2026232 AMAQI
10th Sep 2026233 AMAQI
10th Sep 2026254 AMAQI
10th Sep 2026215 AMAQI

27°C26/28°C

10th Sep 2026216 AMAQI
10th Sep 2026257 AMAQI
10th Sep 2026368 AMAQI
10th Sep 2026219 AMAQI
10th Sep 20262110 AMAQI
10th Sep 20262311 AMAQI
10th Sep 20262512 PMAQI
10th Sep 2026291 PMAQI
10th Sep 2026382 PMAQI
10th Sep 2026333 PMAQI
10th Sep 2026334 PMAQI
10th Sep 2026365 PMAQI
10th Sep 2026256 PMAQI
10th Sep 2026307 PMAQI
10th Sep 2026338 PMAQI
10th Sep 2026429 PMAQI
10th Sep 20263610 PMAQI
10th Sep 20262111 PMAQI
11th Sep 20262312 AMAQI
11th Sep 2026251 AMAQI
11th Sep 2026172 AMAQI
11th Sep 2026213 AMAQI
11th Sep 2026254 AMAQI
11th Sep 2026295 AMAQI

27°C26/29°C

11th Sep 2026216 AMAQI
11th Sep 2026197 AMAQI
11th Sep 2026218 AMAQI
11th Sep 2026339 AMAQI
11th Sep 20263810 AMAQI
11th Sep 20262911 AMAQI
11th Sep 20262512 PMAQI
11th Sep 2026251 PMAQI
11th Sep 2026292 PMAQI
11th Sep 2026233 PMAQI
11th Sep 2026274 PMAQI
11th Sep 2026255 PMAQI
11th Sep 2026256 PMAQI
11th Sep 2026387 PMAQI
11th Sep 2026448 PMAQI
11th Sep 2026559 PMAQI
11th Sep 20265610 PMAQI
11th Sep 20265611 PMAQI
12th Sep 20265412 AMAQI
12th Sep 2026591 AMAQI
12th Sep 2026252 AMAQI
12th Sep 2026213 AMAQI
12th Sep 2026254 AMAQI
12th Sep 2026255 AMAQI

28°C26/30°C

12th Sep 2026336 AMAQI
12th Sep 2026277 AMAQI
12th Sep 2026488 AMAQI
12th Sep 2026259 AMAQI
12th Sep 20265110 AMAQI
12th Sep 20264811 AMAQI
12th Sep 20262712 PMAQI
12th Sep 2026421 PMAQI
12th Sep 2026252 PMAQI
12th Sep 2026383 PMAQI
12th Sep 2026274 PMAQI
12th Sep 2026275 PMAQI
12th Sep 2026426 PMAQI
12th Sep 2026537 PMAQI
12th Sep 2026568 PMAQI
12th Sep 2026369 PMAQI
12th Sep 20263110 PMAQI
12th Sep 20266511 PMAQI
13th Sep 20262712 AMAQI
13th Sep 2026401 AMAQI
13th Sep 2026292 AMAQI
13th Sep 2026253 AMAQI
13th Sep 2026384 AMAQI

28°C26/30°C

13th Sep 2026366 AMAQI
13th Sep 2026337 AMAQI
13th Sep 2026368 AMAQI
13th Sep 2026369 AMAQI
13th Sep 20263110 AMAQI
13th Sep 20263111 AMAQI
13th Sep 20264012 PMAQI
13th Sep 2026421 PMAQI
13th Sep 2026232 PMAQI
13th Sep 2026293 PMAQI
13th Sep 2026294 PMAQI
13th Sep 2026255 PMAQI
13th Sep 2026276 PMAQI
13th Sep 2026217 PMAQI
13th Sep 2026318 PMAQI
13th Sep 2026259 PMAQI
13th Sep 20262110 PMAQI
13th Sep 20262111 PMAQI
14th Sep 20262912 AMAQI
14th Sep 2026271 AMAQI
14th Sep 2026292 AMAQI
14th Sep 2026293 AMAQI
14th Sep 2026314 AMAQI
14th Sep 2026275 AMAQI

27°C26/30°C

14th Sep 2026316 AMAQI
14th Sep 2026217 AMAQI
14th Sep 2026388 AMAQI
14th Sep 2026389 AMAQI
14th Sep 20263410 AMAQI
14th Sep 20263111 AMAQI
14th Sep 20263112 PMAQI
14th Sep 2026441 PMAQI
14th Sep 2026252 PMAQI
14th Sep 2026273 PMAQI
14th Sep 2026214 PMAQI
14th Sep 2026255 PMAQI
14th Sep 2026296 PMAQI
14th Sep 2026237 PMAQI
14th Sep 2026338 PMAQI
14th Sep 2026279 PMAQI
14th Sep 20263310 PMAQI
14th Sep 20262911 PMAQI
15th Sep 20263312 AMAQI
15th Sep 2026311 AMAQI
15th Sep 2026292 AMAQI
15th Sep 2026483 AMAQI
15th Sep 2026294 AMAQI
15th Sep 2026275 AMAQI

27°C26/29°C

15th Sep 2026576 AMAQI
15th Sep 2026277 AMAQI
15th Sep 2026338 AMAQI
15th Sep 2026319 AMAQI
15th Sep 20263810 AMAQI
15th Sep 20262311 AMAQI
15th Sep 20263112 PMAQI
15th Sep 2026361 PMAQI
15th Sep 2026592 PMAQI
15th Sep 2026623 PMAQI
15th Sep 2026624 PMAQI
15th Sep 2026535 PMAQI
15th Sep 2026496 PMAQI
15th Sep 2026537 PMAQI
15th Sep 2026568 PMAQI
15th Sep 2026659 PMAQI
15th Sep 20262510 PMAQI
15th Sep 20263811 PMAQI
16th Sep 20264012 AMAQI
16th Sep 2026531 AMAQI
16th Sep 2026422 AMAQI
16th Sep 2026293 AMAQI
16th Sep 2026314 AMAQI
16th Sep 2026525 AMAQI

27°C26/30°C

16th Sep 2026576 AMAQI
16th Sep 2026297 AMAQI
16th Sep 2026578 AMAQI
16th Sep 2026429 AMAQI
16th Sep 20263310 AMAQI
16th Sep 20264411 AMAQI
16th Sep 20263212 PMAQI
16th Sep 2026321 PMAQI
16th Sep 2026212 PMAQI
16th Sep 2026273 PMAQI
16th Sep 2026524 PMAQI
16th Sep 2026605 PMAQI
16th Sep 2026766 PMAQI
16th Sep 2026467 PMAQI
16th Sep 2026298 PMAQI
16th Sep 2026519 PMAQI
16th Sep 20262910 PMAQI
16th Sep 20265111 PMAQI
17th Sep 20265212 AMAQI
17th Sep 2026211 AMAQI
17th Sep 2026382 AMAQI
17th Sep 2026533 AMAQI
17th Sep 2026334 AMAQI
17th Sep 2026335 AMAQI

27°C25/30°C

17th Sep 2026256 AMAQI
17th Sep 2026257 AMAQI
17th Sep 2026448 AMAQI
17th Sep 2026259 AMAQI
17th Sep 20262510 AMAQI
17th Sep 20263611 AMAQI
17th Sep 20262112 PMAQI
17th Sep 2026251 PMAQI
17th Sep 2026462 PMAQI
17th Sep 2026333 PMAQI
17th Sep 2026294 PMAQI
17th Sep 2026275 PMAQI
17th Sep 2026406 PMAQI
17th Sep 2026407 PMAQI
17th Sep 2026428 PMAQI
17th Sep 2026409 PMAQI
17th Sep 20264610 PMAQI
17th Sep 20264611 PMAQI
18th Sep 20262512 AMAQI
18th Sep 2026291 AMAQI
18th Sep 2026312 AMAQI
18th Sep 2026273 AMAQI
18th Sep 2026274 AMAQI
18th Sep 2026295 AMAQI

26°C25/29°C

18th Sep 2026316 AMAQI
18th Sep 2026317 AMAQI
18th Sep 2026278 AMAQI
18th Sep 2026409 AMAQI
18th Sep 20262310 AMAQI
18th Sep 20262711 AMAQI
18th Sep 20262712 PMAQI
18th Sep 2026291 PMAQI
18th Sep 2026252 PMAQI
18th Sep 2026233 PMAQI
18th Sep 2026214 PMAQI
18th Sep 2026275 PMAQI
18th Sep 2026336 PMAQI
18th Sep 2026217 PMAQI
18th Sep 2026298 PMAQI
18th Sep 2026219 PMAQI
18th Sep 20265810 PMAQI
18th Sep 20265511 PMAQI
19th Sep 20265712 AMAQI
19th Sep 2026501 AMAQI
19th Sep 2026622 AMAQI
19th Sep 2026543 AMAQI
19th Sep 2026424 AMAQI
19th Sep 2026625 AMAQI

27°C25/29°C

19th Sep 2026666 AMAQI
19th Sep 2026677 AMAQI
19th Sep 2026648 AMAQI
19th Sep 2026789 AMAQI
19th Sep 20267310 AMAQI
19th Sep 20268511 AMAQI
19th Sep 20268312 PMAQI
19th Sep 2026641 PMAQI
19th Sep 2026732 PMAQI
19th Sep 2026693 PMAQI
19th Sep 2026654 PMAQI
19th Sep 2026665 PMAQI
19th Sep 2026606 PMAQI
19th Sep 2026707 PMAQI
19th Sep 2026808 PMAQI
19th Sep 2026789 PMAQI
19th Sep 20268110 PMAQI
19th Sep 20267811 PMAQI
20th Sep 20266612 AMAQI
20th Sep 2026561 AMAQI
20th Sep 2026602 AMAQI
20th Sep 2026623 AMAQI
20th Sep 2026714 AMAQI
20th Sep 2026625 AMAQI

27°C26/29°C

20th Sep 2026606 AMAQI
20th Sep 2026557 AMAQI
20th Sep 2026648 AMAQI
20th Sep 2026559 AMAQI
20th Sep 20265610 AMAQI
20th Sep 20266611 AMAQI
20th Sep 20266012 PMAQI
20th Sep 2026581 PMAQI
20th Sep 2026622 PMAQI
20th Sep 2026533 PMAQI
20th Sep 2026604 PMAQI
20th Sep 2026595 PMAQI
20th Sep 2026676 PMAQI
20th Sep 2026687 PMAQI
20th Sep 2026788 PMAQI
20th Sep 2026629 PMAQI
20th Sep 20267410 PMAQI
20th Sep 20267511 PMAQI
21st Sep 20266212 AMAQI
21st Sep 2026721 AMAQI
21st Sep 2026712 AMAQI
21st Sep 2026593 AMAQI
21st Sep 2026404 AMAQI
21st Sep 2026275 AMAQI

27°C26/29°C

21st Sep 2026316 AMAQI
21st Sep 2026257 AMAQI
21st Sep 2026628 AMAQI
21st Sep 2026769 AMAQI
21st Sep 20267410 AMAQI
21st Sep 20267611 AMAQI
21st Sep 20268312 PMAQI
21st Sep 2026681 PMAQI
21st Sep 2026732 PMAQI
21st Sep 2026703 PMAQI
21st Sep 2026664 PMAQI
21st Sep 2026685 PMAQI
21st Sep 2026646 PMAQI
21st Sep 2026627 PMAQI
21st Sep 2026588 PMAQI
21st Sep 2026679 PMAQI
21st Sep 20266210 PMAQI
21st Sep 20267411 PMAQI
22nd Sep 20268212 AMAQI
22nd Sep 2026661 AMAQI
22nd Sep 2026582 AMAQI
22nd Sep 2026513 AMAQI
22nd Sep 2026584 AMAQI
22nd Sep 2026545 AMAQI

26°C25/28°C

22nd Sep 2026656 AMAQI
22nd Sep 2026597 AMAQI
22nd Sep 2026608 AMAQI
22nd Sep 2026669 AMAQI
22nd Sep 20268010 AMAQI
22nd Sep 20266811 AMAQI
22nd Sep 20267312 PMAQI
22nd Sep 2026741 PMAQI
22nd Sep 2026402 PMAQI
22nd Sep 2026553 PMAQI
22nd Sep 2026344 PMAQI
22nd Sep 2026445 PMAQI
22nd Sep 2026486 PMAQI
22nd Sep 2026577 PMAQI
22nd Sep 2026578 PMAQI
22nd Sep 2026509 PMAQI
22nd Sep 20265410 PMAQI
22nd Sep 20264411 PMAQI
23rd Sep 20264412 AMAQI
23rd Sep 2026461 AMAQI
23rd Sep 2026492 AMAQI
23rd Sep 2026483 AMAQI
23rd Sep 2026464 AMAQI
23rd Sep 2026525 AMAQI

26°C24/28°C

23rd Sep 2026406 AMAQI
23rd Sep 2026487 AMAQI
23rd Sep 2026468 AMAQI
23rd Sep 2026389 AMAQI
23rd Sep 20263610 AMAQI
23rd Sep 20262711 AMAQI
23rd Sep 20263312 PMAQI
23rd Sep 2026361 PMAQI
23rd Sep 2026562 PMAQI
23rd Sep 2026603 PMAQI
23rd Sep 2026554 PMAQI
23rd Sep 2026545 PMAQI
23rd Sep 2026526 PMAQI
23rd Sep 2026557 PMAQI
23rd Sep 2026658 PMAQI
23rd Sep 2026689 PMAQI
23rd Sep 20265810 PMAQI
23rd Sep 20266011 PMAQI
24th Sep 20265812 AMAQI
24th Sep 2026591 AMAQI
24th Sep 2026602 AMAQI
24th Sep 2026583 AMAQI
24th Sep 2026664 AMAQI
24th Sep 2026655 AMAQI

26°C23/29°C

24th Sep 2026666 AMAQI
24th Sep 2026667 AMAQI
24th Sep 2026608 AMAQI
24th Sep 2026599 AMAQI
24th Sep 20265710 AMAQI
24th Sep 20265511 AMAQI
24th Sep 20265812 PMAQI
24th Sep 2026561 PMAQI
24th Sep 2026622 PMAQI
24th Sep 2026673 PMAQI
24th Sep 2026664 PMAQI
24th Sep 2026625 PMAQI
24th Sep 2026706 PMAQI
24th Sep 2026577 PMAQI
24th Sep 2026578 PMAQI
24th Sep 2026559 PMAQI
24th Sep 20265710 PMAQI
24th Sep 20265411 PMAQI
25th Sep 20265212 AMAQI
25th Sep 2026461 AMAQI
25th Sep 2026422 AMAQI
25th Sep 2026403 AMAQI
25th Sep 2026484 AMAQI
25th Sep 2026365 AMAQI

26°C25/28°C

25th Sep 2026366 AMAQI
25th Sep 2026387 AMAQI
25th Sep 2026338 AMAQI
25th Sep 2026369 AMAQI
25th Sep 20263110 AMAQI
25th Sep 20263611 AMAQI
25th Sep 20264212 PMAQI
25th Sep 2026361 PMAQI
25th Sep 2026312 PMAQI
25th Sep 2026363 PMAQI
25th Sep 2026364 PMAQI
25th Sep 2026385 PMAQI
25th Sep 2026426 PMAQI
25th Sep 2026487 PMAQI
25th Sep 2026538 PMAQI
25th Sep 2026409 PMAQI
25th Sep 20264010 PMAQI
25th Sep 20263311 PMAQI
26th Sep 20263812 AMAQI
26th Sep 2026381 AMAQI
26th Sep 2026402 AMAQI
26th Sep 2026403 AMAQI
26th Sep 2026384 AMAQI
26th Sep 2026315 AMAQI

27°C26/29°C

26th Sep 2026336 AMAQI
26th Sep 2026387 AMAQI
26th Sep 2026348 AMAQI
26th Sep 2026409 AMAQI
26th Sep 20263610 AMAQI
26th Sep 20263311 AMAQI
26th Sep 20264212 PMAQI
26th Sep 2026641 PMAQI
26th Sep 2026442 PMAQI
26th Sep 2026573 PMAQI
26th Sep 2026214 PMAQI
26th Sep 2026235 PMAQI
26th Sep 2026296 PMAQI
26th Sep 2026257 PMAQI
26th Sep 2026308 PMAQI
26th Sep 2026259 PMAQI
26th Sep 20262910 PMAQI
26th Sep 20265111 PMAQI
27th Sep 20265112 AMAQI
27th Sep 2026511 AMAQI
27th Sep 2026292 AMAQI
27th Sep 2026253 AMAQI
27th Sep 2026424 AMAQI
27th Sep 2026295 AMAQI

28°C26/30°C

27th Sep 2026256 AMAQI
27th Sep 2026237 AMAQI
27th Sep 2026318 AMAQI
27th Sep 2026339 AMAQI
27th Sep 20262110 AMAQI
27th Sep 20262511 AMAQI
27th Sep 20262912 PMAQI
27th Sep 2026361 PMAQI
27th Sep 2026292 PMAQI
27th Sep 2026293 PMAQI
27th Sep 2026384 PMAQI
27th Sep 2026485 PMAQI
27th Sep 2026546 PMAQI
27th Sep 2026427 PMAQI
27th Sep 2026278 PMAQI
27th Sep 2026409 PMAQI
27th Sep 20264010 PMAQI
27th Sep 20263311 PMAQI
28th Sep 20262712 AMAQI
28th Sep 2026271 AMAQI
28th Sep 2026272 AMAQI
28th Sep 2026213 AMAQI
28th Sep 2026334 AMAQI
28th Sep 2026315 AMAQI

28°C26/28°C

28th Sep 2026366 AMAQI
28th Sep 2026297 AMAQI
28th Sep 2026238 AMAQI
28th Sep 2026279 AMAQI
28th Sep 20263810 AMAQI
28th Sep 20262911 AMAQI
28th Sep 20262512 PMAQI
28th Sep 2026251 PMAQI
28th Sep 2026342 PMAQI
28th Sep 2026363 PMAQI
28th Sep 2026344 PMAQI
28th Sep 2026425 PMAQI
28th Sep 2026566 PMAQI
28th Sep 2026567 PMAQI
28th Sep 2026368 PMAQI
28th Sep 2026239 PMAQI
28th Sep 20262510 PMAQI
28th Sep 20262311 PMAQI
29th Sep 20262112 AMAQI
29th Sep 2026251 AMAQI
29th Sep 2026322 AMAQI
29th Sep 2026253 AMAQI
29th Sep 2026214 AMAQI
29th Sep 2026255 AMAQI

27°C26/29°C

29th Sep 2026366 AMAQI
29th Sep 2026407 AMAQI
29th Sep 2026428 AMAQI
29th Sep 2026389 AMAQI
29th Sep 20263810 AMAQI
29th Sep 20262511 AMAQI
29th Sep 20262712 PMAQI
29th Sep 2026341 PMAQI
29th Sep 2026452 PMAQI
29th Sep 2026463 PMAQI
29th Sep 2026364 PMAQI
29th Sep 2026315 PMAQI
29th Sep 2026296 PMAQI
29th Sep 2026507 PMAQI
29th Sep 2026648 PMAQI
29th Sep 2026829 PMAQI
29th Sep 20267610 PMAQI
29th Sep 20267611 PMAQI
30th Sep 20267212 AMAQI
30th Sep 2026531 AMAQI
30th Sep 2026572 AMAQI
30th Sep 2026553 AMAQI
30th Sep 2026544 AMAQI
30th Sep 2026505 AMAQI

27°C26/29°C

30th Sep 2026456 AMAQI
30th Sep 2026407 AMAQI
30th Sep 2026298 AMAQI
30th Sep 2026429 AMAQI
30th Sep 20265310 AMAQI
30th Sep 20265311 AMAQI
30th Sep 20265312 PMAQI
30th Sep 2026541 PMAQI
30th Sep 2026402 PMAQI
30th Sep 2026253 PMAQI
30th Sep 2026444 PMAQI
30th Sep 2026565 PMAQI
30th Sep 2026646 PMAQI
30th Sep 2026697 PMAQI
30th Sep 2026658 PMAQI
30th Sep 2026579 PMAQI
30th Sep 20266210 PMAQI
30th Sep 20265911 PMAQI
1st Oct 20266212 AMAQI
1st Oct 2026601 AMAQI
1st Oct 2026602 AMAQI
1st Oct 2026553 AMAQI
1st Oct 2026584 AMAQI
1st Oct 2026475 AMAQI

27°C26/28°C

1st Oct 2026486 AMAQI
1st Oct 2026387 AMAQI
1st Oct 2026448 AMAQI
1st Oct 2026589 AMAQI
1st Oct 20265910 AMAQI
1st Oct 20266211 AMAQI
1st Oct 20265312 PMAQI
1st Oct 2026521 PMAQI
1st Oct 2026472 PMAQI
1st Oct 2026583 PMAQI
1st Oct 2026464 PMAQI
1st Oct 2026465 PMAQI
1st Oct 2026486 PMAQI
1st Oct 2026407 PMAQI
1st Oct 2026338 PMAQI
1st Oct 2026319 PMAQI
1st Oct 20262910 PMAQI
1st Oct 20266011 PMAQI
2nd Oct 20265812 AMAQI
2nd Oct 2026341 AMAQI
2nd Oct 2026362 AMAQI
2nd Oct 2026403 AMAQI
2nd Oct 2026524 AMAQI
2nd Oct 2026505 AMAQI

27°C25/28°C

2nd Oct 2026366 AMAQI
2nd Oct 2026407 AMAQI
2nd Oct 2026388 AMAQI
2nd Oct 2026409 AMAQI
2nd Oct 20266210 AMAQI
2nd Oct 20266911 AMAQI
2nd Oct 20266312 PMAQI
2nd Oct 2026651 PMAQI
2nd Oct 2026562 PMAQI
2nd Oct 2026603 PMAQI
2nd Oct 2026674 PMAQI
2nd Oct 2026555 PMAQI
2nd Oct 2026536 PMAQI
2nd Oct 2026647 PMAQI
2nd Oct 2026338 PMAQI
2nd Oct 2026609 PMAQI
2nd Oct 20264810 PMAQI
2nd Oct 20265111 PMAQI
3rd Oct 20263812 AMAQI
3rd Oct 2026381 AMAQI
3rd Oct 2026362 AMAQI
3rd Oct 2026483 AMAQI
3rd Oct 2026424 AMAQI
3rd Oct 2026595 AMAQI

26°C25/28°C

3rd Oct 2026236 AMAQI
6 AM
3rd Oct 2026237 AMAQI
3rd Oct 2026368 AMAQI
3rd Oct 2026259 AMAQI
3rd Oct 20262910 AMAQI
3rd Oct 20262511 AMAQI
3rd Oct 20263312 PMAQI
12 PM
3rd Oct 2026581 PMAQI
3rd Oct 2026252 PMAQI
3rd Oct 2026333 PMAQI
3rd Oct 2026484 PMAQI
3rd Oct 2026445 PMAQI
3rd Oct 2026406 PMAQI
6 PM
3rd Oct 2026297 PMAQI
3rd Oct 2026388 PMAQI
3rd Oct 2026549 PMAQI
3rd Oct 20262710 PMAQI
3rd Oct 20265111 PMAQI
12 AM
5 AM

26°C25/29°C

Day time
Avg. Highest Time
6 PM

46AQI

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

37AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 6 PM (Avg. 46), while the lowest AQI was between 7 AM to 7 AM (Avg. 37).
Night time
Avg. Highest Time
9 PM

47AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
1 AM - 3 AM

40AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 9 PM (Avg. 47), while the lowest AQI was between 1 AM to 3 AM (Avg. 40).

2026 Days Vs Air Quality

Koja, Okinawa, Japan

2026

82%

225

18%

51

Total number of days with different AQI categories in last 276 days in 2026 (89 days remaining)

Good
225 Days
Moderate
51 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 82%

Health Risk Level:

Low

In 2026, 82% of 276 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

Koja, Okinawa, 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
28AQI (US)
2nd January 2026
22AQI (US)
3rd January 2026
22AQI (US)
4th January 2026
30AQI (US)
5th January 2026
29AQI (US)
6th January 2026
30AQI (US)
7th January 2026
40AQI (US)
8th January 2026
49AQI (US)
9th January 2026
26AQI (US)
10th January 2026
24AQI (US)
11th January 2026
42AQI (US)
12th January 2026
35AQI (US)
13th January 2026
28AQI (US)
14th January 2026
31AQI (US)
15th January 2026
27AQI (US)
16th January 2026
32AQI (US)
17th January 2026
26AQI (US)
18th January 2026
35AQI (US)
19th January 2026
33AQI (US)
20th January 2026
35AQI (US)
21st January 2026
29AQI (US)
22nd January 2026
26AQI (US)
23rd January 2026
41AQI (US)
24th January 2026
40AQI (US)
25th January 2026
47AQI (US)
26th January 2026
45AQI (US)
27th January 2026
37AQI (US)
28th January 2026
39AQI (US)
29th January 2026
37AQI (US)
30th January 2026
39AQI (US)
31st January 2026
32AQI (US)
1st February 2026
28AQI (US)
2nd February 2026
54AQI (US)
3rd February 2026
32AQI (US)
4th February 2026
23AQI (US)
5th February 2026
48AQI (US)
6th February 2026
42AQI (US)
7th February 2026
34AQI (US)
8th February 2026
33AQI (US)
9th February 2026
19AQI (US)
10th February 2026
39AQI (US)
11th February 2026
47AQI (US)
12th February 2026
53AQI (US)
13th February 2026
50AQI (US)
14th February 2026
59AQI (US)
15th February 2026
42AQI (US)
16th February 2026
44AQI (US)
17th February 2026
40AQI (US)
18th February 2026
41AQI (US)
19th February 2026
44AQI (US)
20th February 2026
43AQI (US)
21st February 2026
59AQI (US)
22nd February 2026
49AQI (US)
23rd February 2026
46AQI (US)
24th February 2026
45AQI (US)
25th February 2026
37AQI (US)
26th February 2026
33AQI (US)
27th February 2026
49AQI (US)
28th February 2026
53AQI (US)
1st March 2026
41AQI (US)
2nd March 2026
74AQI (US)
3rd March 2026
46AQI (US)
4th March 2026
61AQI (US)
5th March 2026
51AQI (US)
6th March 2026
60AQI (US)
7th March 2026
61AQI (US)
8th March 2026
50AQI (US)
9th March 2026
53AQI (US)
10th March 2026
60AQI (US)
11th March 2026
56AQI (US)
12th March 2026
64AQI (US)
13th March 2026
50AQI (US)
14th March 2026
40AQI (US)
15th March 2026
61AQI (US)
16th March 2026
58AQI (US)
17th March 2026
63AQI (US)
18th March 2026
59AQI (US)
19th March 2026
47AQI (US)
20th March 2026
47AQI (US)
21st March 2026
44AQI (US)
22nd March 2026
41AQI (US)
23rd March 2026
39AQI (US)
24th March 2026
45AQI (US)
25th March 2026
61AQI (US)
26th March 2026
51AQI (US)
27th March 2026
63AQI (US)
28th March 2026
54AQI (US)
29th March 2026
58AQI (US)
30th March 2026
21AQI (US)
31st March 2026
29AQI (US)
1st April 2026
39AQI (US)
2nd April 2026
49AQI (US)
3rd April 2026
42AQI (US)
4th April 2026
40AQI (US)
5th April 2026
45AQI (US)
6th April 2026
45AQI (US)
7th April 2026
29AQI (US)
8th April 2026
39AQI (US)
9th April 2026
43AQI (US)
10th April 2026
42AQI (US)
11th April 2026
41AQI (US)
12th April 2026
41AQI (US)
13th April 2026
39AQI (US)
14th April 2026
42AQI (US)
15th April 2026
41AQI (US)
16th April 2026
37AQI (US)
17th April 2026
41AQI (US)
18th April 2026
32AQI (US)
19th April 2026
44AQI (US)
20th April 2026
51AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
49AQI (US)
23rd April 2026
39AQI (US)
24th April 2026
39AQI (US)
25th April 2026
48AQI (US)
26th April 2026
51AQI (US)
27th April 2026
55AQI (US)
28th April 2026
50AQI (US)
29th April 2026
32AQI (US)
30th April 2026
36AQI (US)
1st May 2026
46AQI (US)
2nd May 2026
55AQI (US)
3rd May 2026
39AQI (US)
4th May 2026
34AQI (US)
5th May 2026
14AQI (US)
6th May 2026
13AQI (US)
7th May 2026
29AQI (US)
8th May 2026
25AQI (US)
9th May 2026
24AQI (US)
10th May 2026
23AQI (US)
11th May 2026
26AQI (US)
12th May 2026
32AQI (US)
13th May 2026
35AQI (US)
14th May 2026
37AQI (US)
15th May 2026
35AQI (US)
16th May 2026
86AQI (US)
17th May 2026
68AQI (US)
18th May 2026
55AQI (US)
19th May 2026
49AQI (US)
20th May 2026
63AQI (US)
21st May 2026
59AQI (US)
22nd May 2026
59AQI (US)
23rd May 2026
56AQI (US)
24th May 2026
59AQI (US)
25th May 2026
50AQI (US)
26th May 2026
40AQI (US)
27th May 2026
27AQI (US)
28th May 2026
29AQI (US)
29th May 2026
28AQI (US)
30th May 2026
54AQI (US)
31st May 2026
38AQI (US)
1st June 2026
32AQI (US)
2nd June 2026
23AQI (US)
3rd June 2026
32AQI (US)
4th June 2026
27AQI (US)
5th June 2026
24AQI (US)
6th June 2026
28AQI (US)
7th June 2026
24AQI (US)
8th June 2026
24AQI (US)
9th June 2026
27AQI (US)
10th June 2026
22AQI (US)
11th June 2026
20AQI (US)
12th June 2026
25AQI (US)
13th June 2026
26AQI (US)
14th June 2026
23AQI (US)
15th June 2026
22AQI (US)
16th June 2026
26AQI (US)
17th June 2026
23AQI (US)
18th June 2026
24AQI (US)
19th June 2026
26AQI (US)
20th June 2026
21AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
25AQI (US)
24th June 2026
26AQI (US)
25th June 2026
28AQI (US)
26th June 2026
36AQI (US)
27th June 2026
32AQI (US)
28th June 2026
31AQI (US)
29th June 2026
32AQI (US)
30th June 2026
29AQI (US)
1st July 2026
24AQI (US)
2nd July 2026
23AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
24AQI (US)
5th July 2026
21AQI (US)
6th July 2026
17AQI (US)
7th July 2026
16AQI (US)
8th July 2026
20AQI (US)
9th July 2026
30AQI (US)
10th July 2026
58AQI (US)
11th July 2026
31AQI (US)
12th July 2026
29AQI (US)
13th July 2026
32AQI (US)
14th July 2026
27AQI (US)
15th July 2026
26AQI (US)
16th July 2026
27AQI (US)
17th July 2026
31AQI (US)
18th July 2026
38AQI (US)
19th July 2026
50AQI (US)
20th July 2026
38AQI (US)
21st July 2026
45AQI (US)
22nd July 2026
53AQI (US)
23rd July 2026
51AQI (US)
24th July 2026
30AQI (US)
25th July 2026
39AQI (US)
26th July 2026
38AQI (US)
27th July 2026
44AQI (US)
28th July 2026
38AQI (US)
29th July 2026
28AQI (US)
30th July 2026
35AQI (US)
31st July 2026
44AQI (US)
1st August 2026
51AQI (US)
2nd August 2026
40AQI (US)
3rd August 2026
54AQI (US)
4th August 2026
37AQI (US)
5th August 2026
30AQI (US)
6th August 2026
44AQI (US)
7th August 2026
42AQI (US)
8th August 2026
39AQI (US)
9th August 2026
29AQI (US)
10th August 2026
33AQI (US)
11th August 2026
49AQI (US)
12th August 2026
47AQI (US)
13th August 2026
46AQI (US)
14th August 2026
33AQI (US)
15th August 2026
31AQI (US)
16th August 2026
40AQI (US)
17th August 2026
34AQI (US)
18th August 2026
35AQI (US)
19th August 2026
43AQI (US)
20th August 2026
58AQI (US)
21st August 2026
65AQI (US)
22nd August 2026
44AQI (US)
23rd August 2026
48AQI (US)
24th August 2026
50AQI (US)
25th August 2026
46AQI (US)
26th August 2026
31AQI (US)
27th August 2026
34AQI (US)
28th August 2026
39AQI (US)
29th August 2026
41AQI (US)
30th August 2026
34AQI (US)
31st August 2026
33AQI (US)
1st September 2026
29AQI (US)
2nd September 2026
27AQI (US)
3rd September 2026
32AQI (US)
4th September 2026
40AQI (US)
5th September 2026
28AQI (US)
6th September 2026
27AQI (US)
7th September 2026
49AQI (US)
8th September 2026
51AQI (US)
9th September 2026
45AQI (US)
10th September 2026
28AQI (US)
11th September 2026
30AQI (US)
12th September 2026
38AQI (US)
13th September 2026
30AQI (US)
14th September 2026
30AQI (US)
15th September 2026
41AQI (US)
16th September 2026
42AQI (US)
17th September 2026
35AQI (US)
18th September 2026
30AQI (US)
19th September 2026
68AQI (US)
20th September 2026
63AQI (US)
21st September 2026
62AQI (US)
22nd September 2026
58AQI (US)
23rd September 2026
49AQI (US)
24th September 2026
60AQI (US)
25th September 2026
40AQI (US)
26th September 2026
37AQI (US)
27th September 2026
35AQI (US)
28th September 2026
32AQI (US)
29th September 2026
40AQI (US)
30th September 2026
52AQI (US)
1st October 2026
50AQI (US)
2nd October 2026
51AQI (US)
3rd October 2026
38AQI (US)
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

33AQI (US)

42AQI (US)

52AQI (US)

42AQI (US)

42AQI (US)

26AQI (US)

33AQI (US)

41AQI (US)

41AQI (US)

46AQI (US)

No. of days

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

202639AQI (US)

31
23
5
13
18
27
3
21
10
30
28
3
27
4
23
7
2
1
225
51

Highest AQI (US) recorded in

March

52AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202540AQI (US)

25
6
24
4
28
3
25
5
24
7
29
1
31
30
1
30
15
16
17
13
25
6
303
62

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

September

27AQI (US)

202439AQI (US)

16
1
15
3
26
4
27
3
30
1
26
5
9
1
6
23
8
30
30
1
233
26
6

Highest AQI (US) recorded in

September

69AQI (US)

Lowest AQI (US) recorded in

January

19AQI (US)

202335AQI (US)

29
1
26
2
30
1
23
7
22
8
26
3
28
13
6
27
9
4
1
3
31
267
32
1

Highest AQI (US) recorded in

October

52AQI (US)

Lowest AQI (US) recorded in

December

19AQI (US)

202230AQI (US)

2
20
1
29
2
25
3
30
30
24
1
24
4
22
29
1
30
1
266
12

Highest AQI (US) recorded in

August

42AQI (US)

Lowest AQI (US) recorded in

July

18AQI (US)

202129AQI (US)

31
26
2
28
1
20
1
30
1
29
1
26
30
1
27
1
30
1
29
1
31
337
10

Highest AQI (US) recorded in

April

37AQI (US)

Lowest AQI (US) recorded in

July

20AQI (US)

202027AQI (US)

11
2
16
5
17
1
30
31
19
8
1
15
1
27
4
30
31
227
21
1

Highest AQI (US) recorded in

April

40AQI (US)

Lowest AQI (US) recorded in

July

16AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
40AQI (US)
Least Polluted Year Recorded
2020(Avg.)
27AQI (US)

Koja's annual 2026 AQI (US) (39) shows an average percentage change of 19.6% (worsened AQI (US)) compared to previous years: 2020 (27), 2021 (29), 2022 (30), 2023 (35), 2024 (39), 2025 (40).