Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Isahaya, Nagasaki, 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

Isahaya, Nagasaki, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
15th Aug 2024
66AQI
Lowest AQI recorded on
29th Aug 2024
12AQI

Same Day Analysis (20th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 20th Aug - 21st Aug 2025

Isahaya, Nagasaki, Japan

AQI
Day
Night
.

5 AM20th Aug 2025

7 PM

4 AM21st Aug 2025

Day time
Avg. Highest Time
6AM20th Aug

51AQI

Avg. Lowest Time
5PM20th Aug

28AQI

Night time
Avg. Highest Time
2AM21st Aug

48AQI

Avg. Lowest Time
11PM20th Aug

35AQI

In the last 24 hours,

Isahaya's AQI reached its highest point of 51 at 6 AM during the Day, while the lowest point, 28, was recorded at 5 PM during the Day between 20th Aug and 21st Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Isahaya, Nagasaki, Japan

JulAug
22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Jul 2025335 AMAQI
22nd Jul 2025346 AMAQI
22nd Jul 2025347 AMAQI
22nd Jul 2025338 AMAQI
22nd Jul 2025309 AMAQI
22nd Jul 20253510 AMAQI
22nd Jul 20252911 AMAQI
22nd Jul 20254212 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025492 PMAQI
22nd Jul 2025543 PMAQI
22nd Jul 2025504 PMAQI
22nd Jul 2025495 PMAQI
22nd Jul 2025576 PMAQI
22nd Jul 2025607 PMAQI
22nd Jul 2025588 PMAQI
22nd Jul 2025549 PMAQI
22nd Jul 20254910 PMAQI
22nd Jul 20254911 PMAQI
23rd Jul 20255012 AMAQI
23rd Jul 2025421 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025373 AMAQI
23rd Jul 2025384 AMAQI

28°C24/33°C

23rd Jul 2025385 AMAQI
23rd Jul 2025386 AMAQI
23rd Jul 2025387 AMAQI
23rd Jul 2025388 AMAQI
23rd Jul 2025489 AMAQI
23rd Jul 20255010 AMAQI
23rd Jul 20255011 AMAQI
23rd Jul 20255112 PMAQI
23rd Jul 2025541 PMAQI
23rd Jul 2025572 PMAQI
23rd Jul 2025593 PMAQI
23rd Jul 2025534 PMAQI
23rd Jul 2025415 PMAQI
23rd Jul 2025476 PMAQI
23rd Jul 2025567 PMAQI
23rd Jul 2025588 PMAQI
23rd Jul 2025549 PMAQI
23rd Jul 20255610 PMAQI
23rd Jul 20255411 PMAQI
24th Jul 20255212 AMAQI
24th Jul 2025491 AMAQI
24th Jul 2025412 AMAQI
24th Jul 2025403 AMAQI
24th Jul 2025424 AMAQI

29°C24/34°C

24th Jul 2025445 AMAQI
24th Jul 2025436 AMAQI
24th Jul 2025447 AMAQI
24th Jul 2025448 AMAQI
24th Jul 2025389 AMAQI
24th Jul 20252810 AMAQI
24th Jul 20252611 AMAQI
24th Jul 20252412 PMAQI
24th Jul 2025211 PMAQI
24th Jul 2025242 PMAQI
24th Jul 2025243 PMAQI
24th Jul 2025214 PMAQI
24th Jul 2025265 PMAQI
24th Jul 2025256 PMAQI
24th Jul 2025247 PMAQI
24th Jul 2025298 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253610 PMAQI
24th Jul 20253811 PMAQI
25th Jul 20253712 AMAQI
25th Jul 2025371 AMAQI
25th Jul 2025382 AMAQI
25th Jul 2025443 AMAQI
25th Jul 2025444 AMAQI

29°C24/34°C

25th Jul 2025405 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025418 AMAQI
25th Jul 2025209 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20252012 PMAQI
25th Jul 2025221 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025175 PMAQI
25th Jul 2025156 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025188 PMAQI
25th Jul 2025279 PMAQI
25th Jul 20252610 PMAQI
25th Jul 20252411 PMAQI
26th Jul 20252512 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025402 AMAQI
26th Jul 2025413 AMAQI
26th Jul 2025384 AMAQI

28°C24/34°C

26th Jul 2025355 AMAQI
26th Jul 2025356 AMAQI
26th Jul 2025357 AMAQI
26th Jul 2025368 AMAQI
26th Jul 2025189 AMAQI
26th Jul 20251310 AMAQI
26th Jul 20251511 AMAQI
26th Jul 20251512 PMAQI
26th Jul 2025161 PMAQI
26th Jul 2025162 PMAQI
26th Jul 2025163 PMAQI
26th Jul 2025154 PMAQI
26th Jul 2025165 PMAQI
26th Jul 2025146 PMAQI
26th Jul 2025167 PMAQI
26th Jul 2025178 PMAQI
26th Jul 2025239 PMAQI
26th Jul 20252410 PMAQI
26th Jul 20252311 PMAQI
27th Jul 20252312 AMAQI
27th Jul 2025261 AMAQI
27th Jul 2025332 AMAQI
27th Jul 2025343 AMAQI
27th Jul 2025344 AMAQI

28°C25/33°C

27th Jul 2025315 AMAQI
27th Jul 2025316 AMAQI
27th Jul 2025317 AMAQI
27th Jul 2025318 AMAQI
27th Jul 2025229 AMAQI
27th Jul 20251410 AMAQI
27th Jul 20251411 AMAQI
27th Jul 20251412 PMAQI
27th Jul 2025141 PMAQI
27th Jul 2025122 PMAQI
27th Jul 2025153 PMAQI
27th Jul 2025164 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025186 PMAQI
27th Jul 2025147 PMAQI
27th Jul 2025168 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252210 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025302 AMAQI
28th Jul 2025303 AMAQI
28th Jul 2025294 AMAQI

28°C25/33°C

28th Jul 2025275 AMAQI
28th Jul 2025276 AMAQI
28th Jul 2025277 AMAQI
28th Jul 2025278 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20251610 AMAQI
28th Jul 20251611 AMAQI
28th Jul 20251712 PMAQI
28th Jul 2025181 PMAQI
28th Jul 2025182 PMAQI
28th Jul 2025193 PMAQI
28th Jul 2025204 PMAQI
28th Jul 2025215 PMAQI
28th Jul 2025206 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025218 PMAQI
28th Jul 2025229 PMAQI
28th Jul 20252210 PMAQI
28th Jul 20252111 PMAQI
29th Jul 20252012 AMAQI
29th Jul 2025221 AMAQI
29th Jul 2025272 AMAQI
29th Jul 2025273 AMAQI
29th Jul 2025264 AMAQI

29°C24/35°C

29th Jul 2025255 AMAQI
29th Jul 2025256 AMAQI
29th Jul 2025257 AMAQI
29th Jul 2025268 AMAQI
29th Jul 2025189 AMAQI
29th Jul 20251910 AMAQI
29th Jul 20251811 AMAQI
29th Jul 20251812 PMAQI
29th Jul 2025191 PMAQI
29th Jul 2025222 PMAQI
29th Jul 2025203 PMAQI
29th Jul 2025224 PMAQI
29th Jul 2025225 PMAQI
29th Jul 2025246 PMAQI
29th Jul 2025247 PMAQI
29th Jul 2025318 PMAQI
29th Jul 2025329 PMAQI
29th Jul 20252810 PMAQI
29th Jul 20252811 PMAQI
30th Jul 20252812 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025263 AMAQI
30th Jul 2025264 AMAQI

29°C24/35°C

30th Jul 2025245 AMAQI
30th Jul 2025246 AMAQI
30th Jul 2025237 AMAQI
30th Jul 2025248 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20252910 AMAQI
30th Jul 20253511 AMAQI
30th Jul 20253012 PMAQI
30th Jul 2025251 PMAQI
30th Jul 2025302 PMAQI
30th Jul 2025303 PMAQI
30th Jul 2025294 PMAQI
30th Jul 2025305 PMAQI
30th Jul 2025296 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025368 PMAQI
30th Jul 2025379 PMAQI
30th Jul 20253810 PMAQI
30th Jul 20254011 PMAQI
31st Jul 20253612 AMAQI
31st Jul 2025341 AMAQI
31st Jul 2025262 AMAQI
31st Jul 2025263 AMAQI
31st Jul 2025244 AMAQI

28°C24/34°C

31st Jul 2025245 AMAQI
31st Jul 2025246 AMAQI
31st Jul 2025247 AMAQI
31st Jul 2025248 AMAQI
31st Jul 2025249 AMAQI
31st Jul 20252410 AMAQI
31st Jul 20252311 AMAQI
31st Jul 20252212 PMAQI
31st Jul 2025221 PMAQI
31st Jul 2025212 PMAQI
31st Jul 2025203 PMAQI
31st Jul 2025254 PMAQI
31st Jul 2025325 PMAQI
31st Jul 2025326 PMAQI
31st Jul 2025387 PMAQI
31st Jul 2025418 PMAQI
31st Jul 2025429 PMAQI
31st Jul 20254310 PMAQI
31st Jul 20254711 PMAQI
1st Aug 20253512 AMAQI
1st Aug 2025341 AMAQI
1st Aug 2025362 AMAQI
1st Aug 2025313 AMAQI
1st Aug 2025334 AMAQI

29°C24/35°C

1st Aug 2025315 AMAQI
1st Aug 2025346 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025348 AMAQI
1st Aug 2025539 AMAQI
1st Aug 20255710 AMAQI
1st Aug 20255911 AMAQI
1st Aug 20255712 PMAQI
1st Aug 2025581 PMAQI
1st Aug 2025572 PMAQI
1st Aug 2025583 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025555 PMAQI
1st Aug 2025556 PMAQI
1st Aug 2025547 PMAQI
1st Aug 2025508 PMAQI
1st Aug 2025469 PMAQI
1st Aug 20254410 PMAQI
1st Aug 20254511 PMAQI
2nd Aug 20254012 AMAQI
2nd Aug 2025381 AMAQI
2nd Aug 2025432 AMAQI
2nd Aug 2025383 AMAQI
2nd Aug 2025424 AMAQI

29°C25/34°C

2nd Aug 2025505 AMAQI
2nd Aug 2025456 AMAQI
2nd Aug 2025437 AMAQI
2nd Aug 2025478 AMAQI
2nd Aug 2025519 AMAQI
2nd Aug 20255010 AMAQI
2nd Aug 20255411 AMAQI
2nd Aug 20256112 PMAQI
2nd Aug 2025581 PMAQI
2nd Aug 2025592 PMAQI
2nd Aug 2025603 PMAQI
2nd Aug 2025554 PMAQI
2nd Aug 2025565 PMAQI
2nd Aug 2025566 PMAQI
2nd Aug 2025567 PMAQI
2nd Aug 2025528 PMAQI
2nd Aug 2025489 PMAQI
2nd Aug 20254810 PMAQI
2nd Aug 20254511 PMAQI
3rd Aug 20254412 AMAQI
3rd Aug 2025461 AMAQI
3rd Aug 2025442 AMAQI
3rd Aug 2025453 AMAQI
3rd Aug 2025504 AMAQI

29°C24/35°C

3rd Aug 2025515 AMAQI
3rd Aug 2025506 AMAQI
3rd Aug 2025487 AMAQI
3rd Aug 2025488 AMAQI
3rd Aug 2025549 AMAQI
3rd Aug 20255610 AMAQI
3rd Aug 20255411 AMAQI
3rd Aug 20255912 PMAQI
3rd Aug 2025591 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025543 PMAQI
3rd Aug 2025524 PMAQI
3rd Aug 2025515 PMAQI
3rd Aug 2025506 PMAQI
3rd Aug 2025527 PMAQI
3rd Aug 2025488 PMAQI
3rd Aug 2025509 PMAQI
3rd Aug 20254610 PMAQI
3rd Aug 20254311 PMAQI
4th Aug 20254512 AMAQI
4th Aug 2025451 AMAQI
4th Aug 2025432 AMAQI
4th Aug 2025453 AMAQI
4th Aug 2025474 AMAQI

28°C25/32°C

4th Aug 2025475 AMAQI
4th Aug 2025486 AMAQI
4th Aug 2025487 AMAQI
4th Aug 2025498 AMAQI
4th Aug 2025419 AMAQI
4th Aug 20254010 AMAQI
4th Aug 20254411 AMAQI
4th Aug 20253112 PMAQI
4th Aug 2025381 PMAQI
4th Aug 2025332 PMAQI
4th Aug 2025423 PMAQI
4th Aug 2025454 PMAQI
4th Aug 2025465 PMAQI
4th Aug 2025496 PMAQI
4th Aug 2025527 PMAQI
4th Aug 2025488 PMAQI
4th Aug 2025469 PMAQI
4th Aug 20254010 PMAQI
4th Aug 20254111 PMAQI
5th Aug 20254212 AMAQI
5th Aug 2025451 AMAQI
5th Aug 2025462 AMAQI
5th Aug 2025433 AMAQI
5th Aug 2025464 AMAQI

28°C25/31°C

5th Aug 2025465 AMAQI
5th Aug 2025456 AMAQI
5th Aug 2025457 AMAQI
5th Aug 2025438 AMAQI
5th Aug 2025399 AMAQI
5th Aug 20254710 AMAQI
5th Aug 20254811 AMAQI
5th Aug 20254312 PMAQI
5th Aug 2025541 PMAQI
5th Aug 2025542 PMAQI
5th Aug 2025463 PMAQI
5th Aug 2025404 PMAQI
5th Aug 2025385 PMAQI
5th Aug 2025436 PMAQI
5th Aug 2025397 PMAQI
5th Aug 2025468 PMAQI
5th Aug 2025389 PMAQI
5th Aug 20253810 PMAQI
5th Aug 20254011 PMAQI
6th Aug 20254312 AMAQI
6th Aug 2025471 AMAQI
6th Aug 2025492 AMAQI
6th Aug 2025463 AMAQI
6th Aug 2025474 AMAQI

29°C26/32°C

6th Aug 2025485 AMAQI
6th Aug 2025476 AMAQI
6th Aug 2025487 AMAQI
6th Aug 2025488 AMAQI
6th Aug 2025329 AMAQI
6th Aug 20253510 AMAQI
6th Aug 20255011 AMAQI
6th Aug 20254012 PMAQI
6th Aug 2025381 PMAQI
6th Aug 2025452 PMAQI
6th Aug 2025423 PMAQI
6th Aug 2025484 PMAQI
6th Aug 2025485 PMAQI
6th Aug 2025536 PMAQI
6th Aug 2025547 PMAQI
6th Aug 2025508 PMAQI
6th Aug 2025529 PMAQI
6th Aug 20254810 PMAQI
6th Aug 20254711 PMAQI
7th Aug 20254512 AMAQI
7th Aug 2025451 AMAQI
7th Aug 2025482 AMAQI
7th Aug 2025483 AMAQI
7th Aug 2025474 AMAQI

29°C26/32°C

7th Aug 2025495 AMAQI
7th Aug 2025496 AMAQI
7th Aug 2025487 AMAQI
7th Aug 2025488 AMAQI
7th Aug 2025459 AMAQI
7th Aug 20254610 AMAQI
7th Aug 20254411 AMAQI
7th Aug 20255512 PMAQI
7th Aug 2025571 PMAQI
7th Aug 2025542 PMAQI
7th Aug 2025443 PMAQI
7th Aug 2025344 PMAQI
7th Aug 2025365 PMAQI
7th Aug 2025526 PMAQI
7th Aug 2025557 PMAQI
7th Aug 2025568 PMAQI
7th Aug 2025549 PMAQI
7th Aug 20255410 PMAQI
7th Aug 20255511 PMAQI
8th Aug 20255412 AMAQI
8th Aug 2025521 AMAQI
8th Aug 2025482 AMAQI
8th Aug 2025483 AMAQI
8th Aug 2025484 AMAQI

27°C25/30°C

8th Aug 2025495 AMAQI
8th Aug 2025496 AMAQI
8th Aug 2025497 AMAQI
8th Aug 2025498 AMAQI
8th Aug 2025329 AMAQI
8th Aug 20252610 AMAQI
8th Aug 20252511 AMAQI
8th Aug 20252412 PMAQI
8th Aug 2025261 PMAQI
8th Aug 2025252 PMAQI
8th Aug 2025253 PMAQI
8th Aug 2025264 PMAQI
8th Aug 2025305 PMAQI
8th Aug 2025286 PMAQI
8th Aug 2025307 PMAQI
8th Aug 2025348 PMAQI
8th Aug 2025429 PMAQI
8th Aug 20254310 PMAQI
8th Aug 20254211 PMAQI
9th Aug 20254012 AMAQI
9th Aug 2025431 AMAQI
9th Aug 2025512 AMAQI
9th Aug 2025513 AMAQI
9th Aug 2025504 AMAQI

26°C23/28°C

9th Aug 2025465 AMAQI
9th Aug 2025466 AMAQI
9th Aug 2025467 AMAQI
9th Aug 2025468 AMAQI
9th Aug 2025299 AMAQI
9th Aug 20252210 AMAQI
9th Aug 20252211 AMAQI
9th Aug 20252212 PMAQI
9th Aug 2025181 PMAQI
9th Aug 2025202 PMAQI
9th Aug 2025193 PMAQI
9th Aug 2025224 PMAQI
9th Aug 2025215 PMAQI
9th Aug 2025226 PMAQI
9th Aug 2025227 PMAQI
9th Aug 2025288 PMAQI
9th Aug 2025389 PMAQI
9th Aug 20254110 PMAQI
9th Aug 20254011 PMAQI
10th Aug 20254112 AMAQI
10th Aug 2025461 AMAQI
10th Aug 2025472 AMAQI
10th Aug 2025473 AMAQI
10th Aug 2025464 AMAQI

25°C24/27°C

10th Aug 2025425 AMAQI
10th Aug 2025426 AMAQI
10th Aug 2025427 AMAQI
10th Aug 2025428 AMAQI
10th Aug 2025409 AMAQI
10th Aug 20254010 AMAQI
10th Aug 20253711 AMAQI
10th Aug 20253512 PMAQI
10th Aug 2025391 PMAQI
10th Aug 2025382 PMAQI
10th Aug 2025343 PMAQI
10th Aug 2025364 PMAQI
10th Aug 2025365 PMAQI
10th Aug 2025366 PMAQI
10th Aug 2025367 PMAQI
10th Aug 2025388 PMAQI
10th Aug 2025409 PMAQI
10th Aug 20254510 PMAQI
10th Aug 20254011 PMAQI
11th Aug 20253812 AMAQI
11th Aug 2025371 AMAQI
11th Aug 2025442 AMAQI
11th Aug 2025443 AMAQI
11th Aug 2025444 AMAQI

26°C26/26°C

11th Aug 2025435 AMAQI
11th Aug 2025446 AMAQI
11th Aug 2025447 AMAQI
11th Aug 2025428 AMAQI
11th Aug 2025219 AMAQI
11th Aug 20251310 AMAQI
11th Aug 20251611 AMAQI
11th Aug 20251812 PMAQI
11th Aug 2025241 PMAQI
11th Aug 2025212 PMAQI
11th Aug 2025233 PMAQI
11th Aug 2025234 PMAQI
11th Aug 2025265 PMAQI
11th Aug 2025326 PMAQI
11th Aug 2025317 PMAQI
11th Aug 2025328 PMAQI
11th Aug 2025339 PMAQI
11th Aug 20253610 PMAQI
11th Aug 20253511 PMAQI
12th Aug 20254012 AMAQI
12th Aug 2025451 AMAQI
12th Aug 2025422 AMAQI
12th Aug 2025423 AMAQI
12th Aug 2025394 AMAQI

26°C25/26°C

12th Aug 2025385 AMAQI
12th Aug 2025386 AMAQI
12th Aug 2025387 AMAQI
12th Aug 2025358 AMAQI
12th Aug 2025239 AMAQI
12th Aug 20252110 AMAQI
12th Aug 20253411 AMAQI
12th Aug 20254812 PMAQI
12th Aug 2025421 PMAQI
12th Aug 2025322 PMAQI
12th Aug 2025313 PMAQI
12th Aug 2025374 PMAQI
12th Aug 2025305 PMAQI
12th Aug 2025336 PMAQI
12th Aug 2025357 PMAQI
12th Aug 2025308 PMAQI
12th Aug 2025389 PMAQI
12th Aug 20253810 PMAQI
12th Aug 20253411 PMAQI
13th Aug 20253512 AMAQI
13th Aug 2025381 AMAQI
13th Aug 2025402 AMAQI
13th Aug 2025383 AMAQI
13th Aug 2025384 AMAQI

27°C25/30°C

13th Aug 2025375 AMAQI
13th Aug 2025386 AMAQI
13th Aug 2025407 AMAQI
13th Aug 2025388 AMAQI
13th Aug 2025389 AMAQI
13th Aug 20253610 AMAQI
13th Aug 20254211 AMAQI
13th Aug 20254012 PMAQI
13th Aug 2025371 PMAQI
13th Aug 2025442 PMAQI
13th Aug 2025533 PMAQI
13th Aug 2025504 PMAQI
13th Aug 2025555 PMAQI
13th Aug 2025466 PMAQI
13th Aug 2025407 PMAQI
13th Aug 2025358 PMAQI
13th Aug 2025449 PMAQI
13th Aug 20254010 PMAQI
13th Aug 20253511 PMAQI
14th Aug 20253812 AMAQI
14th Aug 2025371 AMAQI
14th Aug 2025382 AMAQI
14th Aug 2025393 AMAQI
14th Aug 2025394 AMAQI

28°C25/31°C

14th Aug 2025385 AMAQI
14th Aug 2025396 AMAQI
14th Aug 2025387 AMAQI
14th Aug 2025388 AMAQI
14th Aug 2025259 AMAQI
14th Aug 20252910 AMAQI
14th Aug 20253511 AMAQI
14th Aug 20253712 PMAQI
14th Aug 2025381 PMAQI
14th Aug 2025362 PMAQI
14th Aug 2025443 PMAQI
14th Aug 2025344 PMAQI
14th Aug 2025445 PMAQI
14th Aug 2025406 PMAQI
14th Aug 2025407 PMAQI
14th Aug 2025448 PMAQI
14th Aug 2025419 PMAQI
14th Aug 20254310 PMAQI
14th Aug 20254211 PMAQI
15th Aug 20254412 AMAQI
15th Aug 2025401 AMAQI
15th Aug 2025392 AMAQI
15th Aug 2025383 AMAQI
15th Aug 2025394 AMAQI

28°C25/32°C

15th Aug 2025385 AMAQI
15th Aug 2025396 AMAQI
15th Aug 2025387 AMAQI
15th Aug 2025388 AMAQI
15th Aug 2025419 AMAQI
15th Aug 20253610 AMAQI
15th Aug 20254211 AMAQI
15th Aug 20254412 PMAQI
15th Aug 2025531 PMAQI
15th Aug 2025442 PMAQI
15th Aug 2025413 PMAQI
15th Aug 2025434 PMAQI
15th Aug 2025405 PMAQI
15th Aug 2025396 PMAQI
15th Aug 2025457 PMAQI
15th Aug 2025378 PMAQI
15th Aug 2025349 PMAQI
15th Aug 20253310 PMAQI
15th Aug 20253611 PMAQI
16th Aug 20253512 AMAQI
16th Aug 2025391 AMAQI
16th Aug 2025382 AMAQI
16th Aug 2025393 AMAQI
16th Aug 2025404 AMAQI

28°C24/33°C

16th Aug 2025405 AMAQI
16th Aug 2025406 AMAQI
16th Aug 2025407 AMAQI
16th Aug 2025418 AMAQI
16th Aug 2025319 AMAQI
16th Aug 20253510 AMAQI
16th Aug 20254911 AMAQI
16th Aug 20254812 PMAQI
16th Aug 2025511 PMAQI
16th Aug 2025462 PMAQI
16th Aug 2025383 PMAQI
16th Aug 2025394 PMAQI
16th Aug 2025465 PMAQI
16th Aug 2025406 PMAQI
16th Aug 2025457 PMAQI
16th Aug 2025398 PMAQI
16th Aug 2025399 PMAQI
16th Aug 20253610 PMAQI
16th Aug 20253411 PMAQI
17th Aug 20254012 AMAQI
17th Aug 2025401 AMAQI
17th Aug 2025392 AMAQI
17th Aug 2025393 AMAQI
17th Aug 2025394 AMAQI

28°C25/33°C

17th Aug 2025395 AMAQI
17th Aug 2025406 AMAQI
17th Aug 2025427 AMAQI
17th Aug 2025408 AMAQI
17th Aug 2025429 AMAQI
17th Aug 20253910 AMAQI
17th Aug 20254311 AMAQI
17th Aug 20253912 PMAQI
17th Aug 2025421 PMAQI
17th Aug 2025462 PMAQI
17th Aug 2025483 PMAQI
17th Aug 2025524 PMAQI
17th Aug 2025445 PMAQI
17th Aug 2025396 PMAQI
17th Aug 2025347 PMAQI
17th Aug 2025358 PMAQI
17th Aug 2025369 PMAQI
17th Aug 20254110 PMAQI
17th Aug 20253811 PMAQI
18th Aug 20254112 AMAQI
18th Aug 2025421 AMAQI
18th Aug 2025382 AMAQI
18th Aug 2025383 AMAQI
18th Aug 2025404 AMAQI

28°C25/31°C

18th Aug 2025395 AMAQI
18th Aug 2025416 AMAQI
18th Aug 2025397 AMAQI
18th Aug 2025418 AMAQI
18th Aug 2025349 AMAQI
18th Aug 20254810 AMAQI
18th Aug 20255611 AMAQI
18th Aug 20255912 PMAQI
18th Aug 2025571 PMAQI
18th Aug 2025622 PMAQI
18th Aug 2025603 PMAQI
18th Aug 2025594 PMAQI
18th Aug 2025605 PMAQI
18th Aug 2025586 PMAQI
18th Aug 2025597 PMAQI
18th Aug 2025578 PMAQI
18th Aug 2025529 PMAQI
18th Aug 20255310 PMAQI
18th Aug 20255311 PMAQI
19th Aug 20255112 AMAQI
19th Aug 2025411 AMAQI
19th Aug 2025422 AMAQI
19th Aug 2025413 AMAQI
19th Aug 2025424 AMAQI

27°C24/31°C

19th Aug 2025455 AMAQI
19th Aug 2025446 AMAQI
19th Aug 2025457 AMAQI
19th Aug 2025468 AMAQI
19th Aug 2025549 AMAQI
19th Aug 20256010 AMAQI
19th Aug 20256811 AMAQI
19th Aug 20255712 PMAQI
19th Aug 2025621 PMAQI
19th Aug 2025612 PMAQI
19th Aug 2025563 PMAQI
19th Aug 2025604 PMAQI
19th Aug 2025525 PMAQI
19th Aug 2025576 PMAQI
19th Aug 2025537 PMAQI
19th Aug 2025528 PMAQI
19th Aug 2025469 PMAQI
19th Aug 20255010 PMAQI
19th Aug 20254811 PMAQI
20th Aug 20254712 AMAQI
20th Aug 2025451 AMAQI
20th Aug 2025442 AMAQI
20th Aug 2025443 AMAQI
20th Aug 2025504 AMAQI

27°C24/31°C

20th Aug 2025505 AMAQI
20th Aug 2025516 AMAQI
20th Aug 2025507 AMAQI
20th Aug 2025518 AMAQI
20th Aug 2025429 AMAQI
20th Aug 20255010 AMAQI
20th Aug 20254311 AMAQI
20th Aug 20254912 PMAQI
20th Aug 2025461 PMAQI
20th Aug 2025502 PMAQI
20th Aug 2025423 PMAQI
20th Aug 2025504 PMAQI
20th Aug 2025285 PMAQI
20th Aug 2025306 PMAQI
20th Aug 2025337 PMAQI
20th Aug 2025368 PMAQI
20th Aug 2025369 PMAQI
20th Aug 20253710 PMAQI
20th Aug 20253511 PMAQI
21st Aug 20254212 AMAQI
21st Aug 2025451 AMAQI
21st Aug 2025482 AMAQI
21st Aug 2025483 AMAQI
21st Aug 2025484 AMAQI

27°C24/31°C

21st Aug 2025485 AMAQI
5 AM
21st Aug 2025496 AMAQI
21st Aug 2025497 AMAQI
21st Aug 2025488 AMAQI
21st Aug 2025169 AMAQI
21st Aug 20252110 AMAQI
21st Aug 20252311 AMAQI
21st Aug 20253712 PMAQI
12 PM
21st Aug 2025441 PMAQI
21st Aug 2025552 PMAQI
21st Aug 2025583 PMAQI
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 8 AM

40AQI

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

34AQI

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. 40), while the lowest AQI was between 9 AM to 10 AM (Avg. 34).
Night time
Avg. Highest Time
12 AM - 11 PM

40AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM

40AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 40), while the lowest AQI was between 12 AM to 11 PM (Avg. 40).

2025 Days Vs Air Quality

Isahaya, Nagasaki, Japan

2025

82%

191

18%

41

Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)

Good
191 Days
Moderate
41 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 2025, 82% of 233 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

Isahaya, Nagasaki, 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
31AQI
2nd January 2025
40AQI
3rd January 2025
35AQI
4th January 2025
33AQI
5th January 2025
32AQI
6th January 2025
51AQI
7th January 2025
30AQI
8th January 2025
38AQI
9th January 2025
29AQI
10th January 2025
31AQI
11th January 2025
28AQI
12th January 2025
33AQI
13th January 2025
40AQI
14th January 2025
44AQI
15th January 2025
42AQI
16th January 2025
37AQI
17th January 2025
48AQI
18th January 2025
49AQI
19th January 2025
51AQI
20th January 2025
54AQI
21st January 2025
79AQI
22nd January 2025
75AQI
23rd January 2025
70AQI
24th January 2025
74AQI
25th January 2025
46AQI
26th January 2025
45AQI
27th January 2025
39AQI
28th January 2025
36AQI
29th January 2025
33AQI
30th January 2025
34AQI
31st January 2025
43AQI
1st February 2025
40AQI
2nd February 2025
34AQI
3rd February 2025
50AQI
4th February 2025
38AQI
5th February 2025
39AQI
6th February 2025
31AQI
7th February 2025
35AQI
8th February 2025
31AQI
9th February 2025
30AQI
10th February 2025
31AQI
11th February 2025
39AQI
12th February 2025
38AQI
13th February 2025
33AQI
14th February 2025
35AQI
15th February 2025
31AQI
16th February 2025
36AQI
17th February 2025
39AQI
18th February 2025
34AQI
19th February 2025
34AQI
20th February 2025
34AQI
21st February 2025
34AQI
22nd February 2025
39AQI
23rd February 2025
36AQI
24th February 2025
37AQI
25th February 2025
36AQI
26th February 2025
43AQI
27th February 2025
60AQI
28th February 2025
59AQI
1st March 2025
52AQI
2nd March 2025
41AQI
3rd March 2025
41AQI
4th March 2025
29AQI
5th March 2025
30AQI
6th March 2025
30AQI
7th March 2025
33AQI
8th March 2025
39AQI
9th March 2025
43AQI
10th March 2025
46AQI
11th March 2025
43AQI
12th March 2025
49AQI
13th March 2025
52AQI
14th March 2025
34AQI
15th March 2025
31AQI
16th March 2025
28AQI
17th March 2025
47AQI
18th March 2025
44AQI
19th March 2025
45AQI
20th March 2025
52AQI
21st March 2025
55AQI
22nd March 2025
62AQI
23rd March 2025
59AQI
24th March 2025
49AQI
25th March 2025
58AQI
26th March 2025
58AQI
27th March 2025
46AQI
28th March 2025
58AQI
29th March 2025
53AQI
30th March 2025
43AQI
31st March 2025
44AQI
1st April 2025
44AQI
2nd April 2025
34AQI
3rd April 2025
36AQI
4th April 2025
34AQI
5th April 2025
41AQI
6th April 2025
41AQI
7th April 2025
39AQI
8th April 2025
35AQI
9th April 2025
53AQI
10th April 2025
40AQI
11th April 2025
59AQI
12th April 2025
50AQI
13th April 2025
47AQI
14th April 2025
56AQI
15th April 2025
35AQI
16th April 2025
50AQI
17th April 2025
44AQI
18th April 2025
51AQI
19th April 2025
48AQI
20th April 2025
38AQI
21st April 2025
41AQI
22nd April 2025
31AQI
23rd April 2025
26AQI
24th April 2025
33AQI
25th April 2025
46AQI
26th April 2025
46AQI
27th April 2025
48AQI
28th April 2025
41AQI
29th April 2025
51AQI
30th April 2025
50AQI
1st May 2025
42AQI
2nd May 2025
41AQI
3rd May 2025
42AQI
4th May 2025
39AQI
5th May 2025
42AQI
6th May 2025
38AQI
7th May 2025
36AQI
8th May 2025
47AQI
9th May 2025
35AQI
10th May 2025
38AQI
11th May 2025
49AQI
12th May 2025
53AQI
13th May 2025
56AQI
14th May 2025
58AQI
15th May 2025
56AQI
16th May 2025
62AQI
17th May 2025
39AQI
18th May 2025
49AQI
19th May 2025
50AQI
20th May 2025
38AQI
21st May 2025
29AQI
22nd May 2025
33AQI
23rd May 2025
42AQI
24th May 2025
27AQI
25th May 2025
33AQI
26th May 2025
37AQI
27th May 2025
45AQI
28th May 2025
49AQI
29th May 2025
51AQI
30th May 2025
44AQI
31st May 2025
43AQI
1st June 2025
49AQI
2nd June 2025
49AQI
3rd June 2025
36AQI
4th June 2025
43AQI
5th June 2025
45AQI
6th June 2025
44AQI
7th June 2025
55AQI
8th June 2025
63AQI
9th June 2025
32AQI
10th June 2025
30AQI
11th June 2025
39AQI
12th June 2025
36AQI
13th June 2025
37AQI
14th June 2025
27AQI
15th June 2025
26AQI
16th June 2025
29AQI
17th June 2025
27AQI
18th June 2025
30AQI
19th June 2025
33AQI
20th June 2025
27AQI
21st June 2025
23AQI
22nd June 2025
16AQI
23rd June 2025
16AQI
24th June 2025
21AQI
25th June 2025
22AQI
26th June 2025
26AQI
27th June 2025
26AQI
28th June 2025
25AQI
29th June 2025
24AQI
30th June 2025
44AQI
1st July 2025
63AQI
2nd July 2025
71AQI
3rd July 2025
64AQI
4th July 2025
72AQI
5th July 2025
54AQI
6th July 2025
46AQI
7th July 2025
42AQI
8th July 2025
55AQI
9th July 2025
60AQI
10th July 2025
50AQI
11th July 2025
40AQI
12th July 2025
39AQI
13th July 2025
40AQI
14th July 2025
35AQI
15th July 2025
43AQI
16th July 2025
51AQI
17th July 2025
49AQI
18th July 2025
32AQI
19th July 2025
34AQI
20th July 2025
30AQI
21st July 2025
34AQI
22nd July 2025
44AQI
23rd July 2025
48AQI
24th July 2025
35AQI
25th July 2025
27AQI
26th July 2025
24AQI
27th July 2025
22AQI
28th July 2025
23AQI
29th July 2025
24AQI
30th July 2025
29AQI
31st July 2025
30AQI
1st August 2025
45AQI
2nd August 2025
49AQI
3rd August 2025
50AQI
4th August 2025
44AQI
5th August 2025
44AQI
6th August 2025
47AQI
7th August 2025
49AQI
8th August 2025
38AQI
9th August 2025
34AQI
10th August 2025
40AQI
11th August 2025
33AQI
12th August 2025
36AQI
13th August 2025
41AQI
14th August 2025
39AQI
15th August 2025
40AQI
16th August 2025
40AQI
17th August 2025
40AQI
18th August 2025
49AQI
19th August 2025
51AQI
20th August 2025
46AQI

44AQI

38AQI

45AQI

43AQI

43AQI

33AQI

42AQI

43AQI

No. of days

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

202541AQI

24
7
26
2
21
10
25
5
25
6
28
2
23
8
19
1
191
41

Highest AQI recorded in

March

45AQI

Lowest AQI recorded in

June

33AQI

202438AQI

29
2
23
6
29
2
19
10
1
20
11
24
6
31
25
6
22
8
29
2
24
6
31
306
59
1

Highest AQI recorded in

April

50AQI

Lowest AQI recorded in

July

20AQI

202340AQI

21
9
1
20
8
19
12
17
13
24
7
24
6
27
4
28
3
26
4
30
1
21
6
27
4
284
77
1

Highest AQI recorded in

March

47AQI

Lowest AQI recorded in

August

30AQI

202241AQI

23
7
1
18
3
22
9
15
3
18
13
23
7
18
3
1
25
3
25
6
21
9
30
1
238
65
1

Highest AQI recorded in

August

54AQI

Lowest AQI recorded in

September

34AQI

202143AQI

21
10
21
7
16
15
15
7
19
12
14
16
28
3
31
26
4
18
13
16
14
24
7
249
108

Highest AQI recorded in

May

50AQI

Lowest AQI recorded in

August

28AQI

202045AQI

8
5
8
13
7
11
19
11
30
1
12
8
1
1
10
5
22
9
117
63
1

Highest AQI recorded in

May

54AQI

Lowest AQI recorded in

September

0AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
45AQI
Least Polluted Year Recorded
2024(Avg.)
38AQI

Isahaya's annual 2025 AQI (41) shows an average percentage change of 0.5% (worsened AQI) compared to previous years: 2020 (45), 2021 (43), 2022 (41), 2023 (40), 2024 (38).