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HistoryAQIPM2.5PM10COSO2NO2O3

Koga Kamimachi, Honmachi, Kumamoto, 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

Koga Kamimachi, Honmachi, Kumamoto, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Oct 2022
96AQI
Lowest AQI recorded on
8th Oct 2024
13AQI

Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 80 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 4th Oct - 5th Oct 2025

Koga Kamimachi, Honmachi, Kumamoto, Japan

AQI
Day
Night
.

6 AM4th Oct 2025

6 PM

5 AM5th Oct 2025

Day time
Avg. Highest Time
7AM4th Oct

83AQI

Avg. Lowest Time
3PM4th Oct

42AQI

Night time
Avg. Highest Time
5AM5th Oct

66AQI

Avg. Lowest Time
12AM5th Oct

40AQI

In the last 24 hours,

Koga Kamimachi's AQI reached its highest point of 83 at 7 AM during the Day, while the lowest point, 40, was recorded at 12 AM during the Night between 4th Oct and 5th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Koga Kamimachi, Honmachi, Kumamoto, Japan

SepOct
05th - 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 - 04th04th - 05th05th
Day
Night
5th Sep 2025346 AMAQI
5th Sep 2025357 AMAQI
5th Sep 2025368 AMAQI
5th Sep 2025189 AMAQI
5th Sep 20252210 AMAQI
5th Sep 20252611 AMAQI
5th Sep 20253212 PMAQI
5th Sep 2025301 PMAQI
5th Sep 2025282 PMAQI
5th Sep 2025393 PMAQI
5th Sep 2025464 PMAQI
5th Sep 2025445 PMAQI
5th Sep 2025366 PMAQI
5th Sep 2025327 PMAQI
5th Sep 2025228 PMAQI
5th Sep 2025269 PMAQI
5th Sep 20252210 PMAQI
5th Sep 20252611 PMAQI
6th Sep 20252612 AMAQI
6th Sep 2025241 AMAQI
6th Sep 2025232 AMAQI
6th Sep 2025243 AMAQI
6th Sep 2025254 AMAQI
6th Sep 2025285 AMAQI

28°C25/31°C

6th Sep 2025266 AMAQI
6th Sep 2025267 AMAQI
6th Sep 2025268 AMAQI
6th Sep 2025239 AMAQI
6th Sep 20253410 AMAQI
6th Sep 20254211 AMAQI
6th Sep 20253812 PMAQI
6th Sep 2025421 PMAQI
6th Sep 2025372 PMAQI
6th Sep 2025383 PMAQI
6th Sep 2025384 PMAQI
6th Sep 2025385 PMAQI
6th Sep 2025296 PMAQI
6th Sep 2025277 PMAQI
6th Sep 2025298 PMAQI
6th Sep 2025279 PMAQI
6th Sep 20252610 PMAQI
6th Sep 20252411 PMAQI
7th Sep 20252612 AMAQI
7th Sep 2025261 AMAQI
7th Sep 2025242 AMAQI
7th Sep 2025253 AMAQI
7th Sep 2025284 AMAQI
7th Sep 2025295 AMAQI

28°C26/31°C

7th Sep 2025286 AMAQI
7th Sep 2025307 AMAQI
7th Sep 2025308 AMAQI
7th Sep 2025289 AMAQI
7th Sep 20252810 AMAQI
7th Sep 20253211 AMAQI
7th Sep 20253412 PMAQI
7th Sep 2025321 PMAQI
7th Sep 2025412 PMAQI
7th Sep 2025473 PMAQI
7th Sep 2025454 PMAQI
7th Sep 2025515 PMAQI
7th Sep 2025436 PMAQI
7th Sep 2025467 PMAQI
7th Sep 2025418 PMAQI
7th Sep 2025329 PMAQI
7th Sep 20252910 PMAQI
7th Sep 20253211 PMAQI
8th Sep 20253212 AMAQI
8th Sep 2025291 AMAQI
8th Sep 2025282 AMAQI
8th Sep 2025273 AMAQI
8th Sep 2025284 AMAQI
8th Sep 2025285 AMAQI

28°C25/31°C

8th Sep 2025286 AMAQI
8th Sep 2025297 AMAQI
8th Sep 2025288 AMAQI
8th Sep 2025319 AMAQI
8th Sep 20252910 AMAQI
8th Sep 20251611 AMAQI
8th Sep 20252312 PMAQI
8th Sep 2025161 PMAQI
8th Sep 2025242 PMAQI
8th Sep 2025293 PMAQI
8th Sep 2025324 PMAQI
8th Sep 2025295 PMAQI
8th Sep 2025246 PMAQI
8th Sep 2025267 PMAQI
8th Sep 2025278 PMAQI
8th Sep 2025269 PMAQI
8th Sep 20252110 PMAQI
8th Sep 20252411 PMAQI
9th Sep 20252312 AMAQI
9th Sep 2025281 AMAQI
9th Sep 2025302 AMAQI
9th Sep 2025303 AMAQI
9th Sep 2025294 AMAQI
9th Sep 2025305 AMAQI

28°C26/31°C

9th Sep 2025306 AMAQI
9th Sep 2025307 AMAQI
9th Sep 2025308 AMAQI
9th Sep 2025209 AMAQI
9th Sep 20252010 AMAQI
9th Sep 20251711 AMAQI
9th Sep 20252812 PMAQI
9th Sep 2025281 PMAQI
9th Sep 2025202 PMAQI
9th Sep 2025273 PMAQI
9th Sep 2025184 PMAQI
9th Sep 2025205 PMAQI
9th Sep 2025176 PMAQI
9th Sep 2025247 PMAQI
9th Sep 2025228 PMAQI
9th Sep 2025229 PMAQI
9th Sep 20252410 PMAQI
9th Sep 20252411 PMAQI
10th Sep 20252912 AMAQI
10th Sep 2025291 AMAQI
10th Sep 2025302 AMAQI
10th Sep 2025303 AMAQI
10th Sep 2025304 AMAQI
10th Sep 2025285 AMAQI

28°C26/31°C

10th Sep 2025296 AMAQI
10th Sep 2025287 AMAQI
10th Sep 2025288 AMAQI
10th Sep 2025179 AMAQI
10th Sep 20252410 AMAQI
10th Sep 20251411 AMAQI
10th Sep 20251812 PMAQI
10th Sep 2025201 PMAQI
10th Sep 2025242 PMAQI
10th Sep 2025243 PMAQI
10th Sep 2025204 PMAQI
10th Sep 2025205 PMAQI
10th Sep 2025226 PMAQI
10th Sep 2025257 PMAQI
10th Sep 2025238 PMAQI
10th Sep 2025269 PMAQI
10th Sep 20253010 PMAQI
10th Sep 20252611 PMAQI
11th Sep 20252612 AMAQI
11th Sep 2025341 AMAQI
11th Sep 2025322 AMAQI
11th Sep 2025333 AMAQI
11th Sep 2025304 AMAQI
11th Sep 2025295 AMAQI

26°C25/28°C

11th Sep 2025296 AMAQI
11th Sep 2025307 AMAQI
11th Sep 2025298 AMAQI
11th Sep 2025159 AMAQI
11th Sep 20252510 AMAQI
11th Sep 20252211 AMAQI
11th Sep 20252812 PMAQI
11th Sep 2025311 PMAQI
11th Sep 2025352 PMAQI
11th Sep 2025363 PMAQI
11th Sep 2025424 PMAQI
11th Sep 2025395 PMAQI
11th Sep 2025506 PMAQI
11th Sep 2025437 PMAQI
11th Sep 2025348 PMAQI
11th Sep 2025349 PMAQI
11th Sep 20253410 PMAQI
11th Sep 20252911 PMAQI
12th Sep 20252912 AMAQI
12th Sep 2025291 AMAQI
12th Sep 2025312 AMAQI
12th Sep 2025323 AMAQI
12th Sep 2025314 AMAQI
12th Sep 2025305 AMAQI

27°C24/30°C

12th Sep 2025316 AMAQI
12th Sep 2025307 AMAQI
12th Sep 2025308 AMAQI
12th Sep 2025339 AMAQI
12th Sep 20252810 AMAQI
12th Sep 20253211 AMAQI
12th Sep 20253012 PMAQI
12th Sep 2025281 PMAQI
12th Sep 2025302 PMAQI
12th Sep 2025323 PMAQI
12th Sep 2025444 PMAQI
12th Sep 2025445 PMAQI
12th Sep 2025406 PMAQI
12th Sep 2025367 PMAQI
12th Sep 2025408 PMAQI
12th Sep 2025329 PMAQI
12th Sep 20253410 PMAQI
12th Sep 20253011 PMAQI
13th Sep 20252712 AMAQI
13th Sep 2025321 AMAQI
13th Sep 2025312 AMAQI
13th Sep 2025323 AMAQI
13th Sep 2025314 AMAQI
13th Sep 2025305 AMAQI

27°C24/31°C

13th Sep 2025316 AMAQI
13th Sep 2025317 AMAQI
13th Sep 2025318 AMAQI
13th Sep 2025329 AMAQI
13th Sep 20253010 AMAQI
13th Sep 20254211 AMAQI
13th Sep 20252612 PMAQI
13th Sep 2025311 PMAQI
13th Sep 2025272 PMAQI
13th Sep 2025333 PMAQI
13th Sep 2025244 PMAQI
13th Sep 2025225 PMAQI
13th Sep 2025256 PMAQI
13th Sep 2025327 PMAQI
13th Sep 2025248 PMAQI
13th Sep 2025249 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20252811 PMAQI
14th Sep 20252712 AMAQI
14th Sep 2025321 AMAQI
14th Sep 2025312 AMAQI
14th Sep 2025323 AMAQI
14th Sep 2025324 AMAQI
14th Sep 2025325 AMAQI

27°C25/30°C

14th Sep 2025326 AMAQI
14th Sep 2025327 AMAQI
14th Sep 2025328 AMAQI
14th Sep 2025239 AMAQI
14th Sep 20252010 AMAQI
14th Sep 20251711 AMAQI
14th Sep 20252812 PMAQI
14th Sep 2025231 PMAQI
14th Sep 2025202 PMAQI
14th Sep 2025263 PMAQI
14th Sep 2025244 PMAQI
14th Sep 2025265 PMAQI
14th Sep 2025286 PMAQI
14th Sep 2025287 PMAQI
14th Sep 2025348 PMAQI
14th Sep 2025339 PMAQI
14th Sep 20252910 PMAQI
14th Sep 20253011 PMAQI
15th Sep 20252812 AMAQI
15th Sep 2025321 AMAQI
15th Sep 2025322 AMAQI
15th Sep 2025333 AMAQI
15th Sep 2025314 AMAQI
15th Sep 2025305 AMAQI

27°C25/30°C

15th Sep 2025306 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025308 AMAQI
15th Sep 2025229 AMAQI
15th Sep 20252010 AMAQI
15th Sep 20252311 AMAQI
15th Sep 20253612 PMAQI
15th Sep 2025341 PMAQI
15th Sep 2025212 PMAQI
15th Sep 2025243 PMAQI
15th Sep 2025254 PMAQI
15th Sep 2025265 PMAQI
15th Sep 2025246 PMAQI
15th Sep 2025367 PMAQI
15th Sep 2025298 PMAQI
15th Sep 2025299 PMAQI
15th Sep 20252810 PMAQI
15th Sep 20252511 PMAQI
16th Sep 20252912 AMAQI
16th Sep 2025321 AMAQI
16th Sep 2025312 AMAQI
16th Sep 2025313 AMAQI
16th Sep 2025304 AMAQI
16th Sep 2025305 AMAQI

28°C25/31°C

16th Sep 2025306 AMAQI
16th Sep 2025317 AMAQI
16th Sep 2025318 AMAQI
16th Sep 2025309 AMAQI
16th Sep 20253410 AMAQI
16th Sep 20253711 AMAQI
16th Sep 20254612 PMAQI
16th Sep 2025501 PMAQI
16th Sep 2025352 PMAQI
16th Sep 2025353 PMAQI
16th Sep 2025364 PMAQI
16th Sep 2025305 PMAQI
16th Sep 2025286 PMAQI
16th Sep 2025247 PMAQI
16th Sep 2025238 PMAQI
16th Sep 2025229 PMAQI
16th Sep 20252210 PMAQI
16th Sep 20252411 PMAQI
17th Sep 20252612 AMAQI
17th Sep 2025311 AMAQI
17th Sep 2025302 AMAQI
17th Sep 2025313 AMAQI
17th Sep 2025304 AMAQI
17th Sep 2025325 AMAQI

28°C26/31°C

17th Sep 2025316 AMAQI
17th Sep 2025317 AMAQI
17th Sep 2025328 AMAQI
17th Sep 2025369 AMAQI
17th Sep 20254010 AMAQI
17th Sep 20252411 AMAQI
17th Sep 20251812 PMAQI
17th Sep 2025201 PMAQI
17th Sep 2025192 PMAQI
17th Sep 2025223 PMAQI
17th Sep 2025244 PMAQI
17th Sep 2025225 PMAQI
17th Sep 2025286 PMAQI
17th Sep 2025267 PMAQI
17th Sep 2025308 PMAQI
17th Sep 2025269 PMAQI
17th Sep 20252610 PMAQI
17th Sep 20252611 PMAQI
18th Sep 20252512 AMAQI
18th Sep 2025241 AMAQI
18th Sep 2025252 AMAQI
18th Sep 2025303 AMAQI
18th Sep 2025294 AMAQI
18th Sep 2025295 AMAQI

27°C26/29°C

18th Sep 2025286 AMAQI
18th Sep 2025297 AMAQI
18th Sep 2025288 AMAQI
18th Sep 2025179 AMAQI
18th Sep 20251610 AMAQI
18th Sep 20251311 AMAQI
18th Sep 20251212 PMAQI
18th Sep 2025221 PMAQI
18th Sep 2025202 PMAQI
18th Sep 2025203 PMAQI
18th Sep 2025184 PMAQI
18th Sep 2025215 PMAQI
18th Sep 2025246 PMAQI
18th Sep 2025207 PMAQI
18th Sep 2025268 PMAQI
18th Sep 2025299 PMAQI
18th Sep 20253010 PMAQI
18th Sep 20253811 PMAQI
19th Sep 20253112 AMAQI
19th Sep 2025281 AMAQI
19th Sep 2025282 AMAQI
19th Sep 2025273 AMAQI
19th Sep 2025264 AMAQI
19th Sep 2025255 AMAQI

27°C24/29°C

19th Sep 2025256 AMAQI
19th Sep 2025257 AMAQI
19th Sep 2025258 AMAQI
19th Sep 2025269 AMAQI
19th Sep 20253010 AMAQI
19th Sep 20253011 AMAQI
19th Sep 20253012 PMAQI
19th Sep 2025301 PMAQI
19th Sep 2025292 PMAQI
19th Sep 2025303 PMAQI
19th Sep 2025304 PMAQI
19th Sep 2025335 PMAQI
19th Sep 2025326 PMAQI
19th Sep 2025297 PMAQI
19th Sep 2025308 PMAQI
19th Sep 2025309 PMAQI
19th Sep 20253110 PMAQI
19th Sep 20253211 PMAQI
20th Sep 20253012 AMAQI
20th Sep 2025281 AMAQI
20th Sep 2025272 AMAQI
20th Sep 2025283 AMAQI
20th Sep 2025284 AMAQI
20th Sep 2025275 AMAQI

26°C24/29°C

20th Sep 2025286 AMAQI
20th Sep 2025287 AMAQI
20th Sep 2025288 AMAQI
20th Sep 2025529 AMAQI
20th Sep 20255910 AMAQI
20th Sep 20255311 AMAQI
20th Sep 20254512 PMAQI
20th Sep 2025391 PMAQI
20th Sep 2025372 PMAQI
20th Sep 2025323 PMAQI
20th Sep 2025224 PMAQI
20th Sep 2025205 PMAQI
20th Sep 2025236 PMAQI
20th Sep 2025267 PMAQI
20th Sep 2025298 PMAQI
20th Sep 2025269 PMAQI
20th Sep 20252610 PMAQI
20th Sep 20252611 PMAQI
21st Sep 20252512 AMAQI
21st Sep 2025261 AMAQI
21st Sep 2025282 AMAQI
21st Sep 2025283 AMAQI
21st Sep 2025284 AMAQI
21st Sep 2025305 AMAQI

26°C24/28°C

21st Sep 2025296 AMAQI
21st Sep 2025307 AMAQI
21st Sep 2025298 AMAQI
21st Sep 2025189 AMAQI
21st Sep 20251510 AMAQI
21st Sep 20252211 AMAQI
21st Sep 20252212 PMAQI
21st Sep 2025231 PMAQI
21st Sep 2025232 PMAQI
21st Sep 2025213 PMAQI
21st Sep 2025204 PMAQI
21st Sep 2025235 PMAQI
21st Sep 2025226 PMAQI
21st Sep 2025227 PMAQI
21st Sep 2025288 PMAQI
21st Sep 2025289 PMAQI
21st Sep 20252810 PMAQI
21st Sep 20252711 PMAQI
22nd Sep 20252712 AMAQI
22nd Sep 2025271 AMAQI
22nd Sep 2025272 AMAQI
22nd Sep 2025273 AMAQI
22nd Sep 2025284 AMAQI
22nd Sep 2025275 AMAQI

26°C24/28°C

22nd Sep 2025276 AMAQI
22nd Sep 2025277 AMAQI
22nd Sep 2025278 AMAQI
22nd Sep 2025289 AMAQI
22nd Sep 20253210 AMAQI
22nd Sep 20254111 AMAQI
22nd Sep 20254712 PMAQI
22nd Sep 2025461 PMAQI
22nd Sep 2025502 PMAQI
22nd Sep 2025493 PMAQI
22nd Sep 2025414 PMAQI
22nd Sep 2025445 PMAQI
22nd Sep 2025476 PMAQI
22nd Sep 2025407 PMAQI
22nd Sep 2025358 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252810 PMAQI
22nd Sep 20252811 PMAQI
23rd Sep 20252812 AMAQI
23rd Sep 2025271 AMAQI
23rd Sep 2025282 AMAQI
23rd Sep 2025273 AMAQI
23rd Sep 2025284 AMAQI
23rd Sep 2025285 AMAQI

25°C24/27°C

23rd Sep 2025296 AMAQI
23rd Sep 2025287 AMAQI
23rd Sep 2025288 AMAQI
23rd Sep 2025269 AMAQI
23rd Sep 20252310 AMAQI
23rd Sep 20252711 AMAQI
23rd Sep 20252912 PMAQI
23rd Sep 2025281 PMAQI
23rd Sep 2025302 PMAQI
23rd Sep 2025343 PMAQI
23rd Sep 2025394 PMAQI
23rd Sep 2025355 PMAQI
23rd Sep 2025306 PMAQI
23rd Sep 2025377 PMAQI
23rd Sep 2025358 PMAQI
23rd Sep 2025289 PMAQI
23rd Sep 20252810 PMAQI
23rd Sep 20252711 PMAQI
24th Sep 20252712 AMAQI
24th Sep 2025281 AMAQI
24th Sep 2025282 AMAQI
24th Sep 2025283 AMAQI
24th Sep 2025274 AMAQI
24th Sep 2025285 AMAQI

26°C24/28°C

24th Sep 2025286 AMAQI
24th Sep 2025287 AMAQI
24th Sep 2025288 AMAQI
24th Sep 2025339 AMAQI
24th Sep 20253310 AMAQI
24th Sep 20253211 AMAQI
24th Sep 20253212 PMAQI
24th Sep 2025291 PMAQI
24th Sep 2025252 PMAQI
24th Sep 2025253 PMAQI
24th Sep 2025274 PMAQI
24th Sep 2025265 PMAQI
24th Sep 2025246 PMAQI
24th Sep 2025277 PMAQI
24th Sep 2025328 PMAQI
24th Sep 2025279 PMAQI
24th Sep 20252610 PMAQI
24th Sep 20252611 PMAQI
25th Sep 20252612 AMAQI
25th Sep 2025271 AMAQI
25th Sep 2025282 AMAQI
25th Sep 2025273 AMAQI
25th Sep 2025274 AMAQI
25th Sep 2025275 AMAQI

26°C24/30°C

25th Sep 2025276 AMAQI
25th Sep 2025277 AMAQI
25th Sep 2025278 AMAQI
25th Sep 2025209 AMAQI
25th Sep 20251610 AMAQI
25th Sep 20252211 AMAQI
25th Sep 20251612 PMAQI
25th Sep 2025261 PMAQI
25th Sep 2025272 PMAQI
25th Sep 2025373 PMAQI
25th Sep 2025524 PMAQI
25th Sep 2025595 PMAQI
25th Sep 2025586 PMAQI
25th Sep 2025487 PMAQI
25th Sep 2025458 PMAQI
25th Sep 2025449 PMAQI
25th Sep 20253110 PMAQI
25th Sep 20254111 PMAQI
26th Sep 20255012 AMAQI
26th Sep 2025581 AMAQI
26th Sep 2025492 AMAQI
26th Sep 2025243 AMAQI
26th Sep 2025364 AMAQI
26th Sep 2025385 AMAQI

26°C24/28°C

26th Sep 2025476 AMAQI
26th Sep 2025567 AMAQI
26th Sep 2025578 AMAQI
26th Sep 2025569 AMAQI
26th Sep 20255410 AMAQI
26th Sep 20255511 AMAQI
26th Sep 20257412 PMAQI
26th Sep 2025601 PMAQI
26th Sep 2025492 PMAQI
26th Sep 2025523 PMAQI
26th Sep 2025324 PMAQI
26th Sep 2025275 PMAQI
26th Sep 2025236 PMAQI
26th Sep 2025347 PMAQI
26th Sep 2025518 PMAQI
26th Sep 2025429 PMAQI
26th Sep 20255510 PMAQI
26th Sep 20255411 PMAQI
27th Sep 20254612 AMAQI
27th Sep 2025351 AMAQI
27th Sep 2025492 AMAQI
27th Sep 2025463 AMAQI
27th Sep 2025414 AMAQI
27th Sep 2025365 AMAQI

26°C24/29°C

27th Sep 2025406 AMAQI
27th Sep 2025397 AMAQI
27th Sep 2025438 AMAQI
27th Sep 2025359 AMAQI
27th Sep 20252810 AMAQI
27th Sep 20252411 AMAQI
27th Sep 20253012 PMAQI
27th Sep 2025321 PMAQI
27th Sep 2025242 PMAQI
27th Sep 2025333 PMAQI
27th Sep 2025294 PMAQI
27th Sep 2025275 PMAQI
27th Sep 2025396 PMAQI
27th Sep 2025347 PMAQI
27th Sep 2025338 PMAQI
27th Sep 2025359 PMAQI
27th Sep 20253910 PMAQI
27th Sep 20253511 PMAQI
28th Sep 20252612 AMAQI
28th Sep 2025231 AMAQI
28th Sep 2025222 AMAQI
28th Sep 2025223 AMAQI
28th Sep 2025214 AMAQI
28th Sep 2025195 AMAQI

24°C22/27°C

28th Sep 2025186 AMAQI
28th Sep 2025187 AMAQI
28th Sep 2025218 AMAQI
28th Sep 2025259 AMAQI
28th Sep 20253710 AMAQI
28th Sep 20253411 AMAQI
28th Sep 20253112 PMAQI
28th Sep 2025321 PMAQI
28th Sep 2025332 PMAQI
28th Sep 2025333 PMAQI
28th Sep 2025354 PMAQI
28th Sep 2025355 PMAQI
28th Sep 2025316 PMAQI
28th Sep 2025377 PMAQI
28th Sep 2025438 PMAQI
28th Sep 2025409 PMAQI
28th Sep 20254510 PMAQI
28th Sep 20255511 PMAQI
29th Sep 20255312 AMAQI
29th Sep 2025461 AMAQI
29th Sep 2025342 AMAQI
29th Sep 2025413 AMAQI
29th Sep 2025444 AMAQI
29th Sep 2025355 AMAQI

25°C23/27°C

29th Sep 2025286 AMAQI
29th Sep 2025267 AMAQI
29th Sep 2025228 AMAQI
29th Sep 2025159 AMAQI
29th Sep 20251810 AMAQI
29th Sep 20252411 AMAQI
29th Sep 20252912 PMAQI
29th Sep 2025241 PMAQI
29th Sep 2025192 PMAQI
29th Sep 2025233 PMAQI
29th Sep 2025184 PMAQI
29th Sep 2025265 PMAQI
29th Sep 2025376 PMAQI
29th Sep 2025357 PMAQI
29th Sep 2025488 PMAQI
29th Sep 2025509 PMAQI
29th Sep 20254110 PMAQI
29th Sep 20255111 PMAQI
30th Sep 20254812 AMAQI
30th Sep 2025501 AMAQI
30th Sep 2025452 AMAQI
30th Sep 2025303 AMAQI
30th Sep 2025524 AMAQI
30th Sep 2025475 AMAQI

25°C23/27°C

30th Sep 2025396 AMAQI
30th Sep 2025437 AMAQI
30th Sep 2025598 AMAQI
30th Sep 2025419 AMAQI
30th Sep 20254810 AMAQI
30th Sep 20255311 AMAQI
30th Sep 20254612 PMAQI
30th Sep 2025501 PMAQI
30th Sep 2025462 PMAQI
30th Sep 2025453 PMAQI
30th Sep 2025424 PMAQI
30th Sep 2025475 PMAQI
30th Sep 2025466 PMAQI
30th Sep 2025547 PMAQI
30th Sep 2025398 PMAQI
30th Sep 2025519 PMAQI
30th Sep 20255310 PMAQI
30th Sep 20255411 PMAQI
1st Oct 20256212 AMAQI
1st Oct 2025561 AMAQI
1st Oct 2025342 AMAQI
1st Oct 2025523 AMAQI
1st Oct 2025554 AMAQI
1st Oct 2025545 AMAQI

23°C21/26°C

1st Oct 2025516 AMAQI
1st Oct 2025537 AMAQI
1st Oct 2025508 AMAQI
1st Oct 2025559 AMAQI
1st Oct 20254110 AMAQI
1st Oct 20255511 AMAQI
1st Oct 20254412 PMAQI
1st Oct 2025381 PMAQI
1st Oct 2025422 PMAQI
1st Oct 2025483 PMAQI
1st Oct 2025554 PMAQI
1st Oct 2025565 PMAQI
1st Oct 2025566 PMAQI
1st Oct 2025557 PMAQI
1st Oct 2025538 PMAQI
1st Oct 2025539 PMAQI
1st Oct 20255310 PMAQI
1st Oct 20255411 PMAQI
2nd Oct 20254712 AMAQI
2nd Oct 2025461 AMAQI
2nd Oct 2025522 AMAQI
2nd Oct 2025433 AMAQI
2nd Oct 2025474 AMAQI
2nd Oct 2025565 AMAQI

24°C22/27°C

2nd Oct 2025566 AMAQI
2nd Oct 2025557 AMAQI
2nd Oct 2025498 AMAQI
2nd Oct 2025539 AMAQI
2nd Oct 20256110 AMAQI
2nd Oct 20256011 AMAQI
2nd Oct 20255712 PMAQI
2nd Oct 2025581 PMAQI
2nd Oct 2025602 PMAQI
2nd Oct 2025653 PMAQI
2nd Oct 2025674 PMAQI
2nd Oct 2025645 PMAQI
2nd Oct 2025656 PMAQI
2nd Oct 2025627 PMAQI
2nd Oct 2025608 PMAQI
2nd Oct 2025619 PMAQI
2nd Oct 20256410 PMAQI
2nd Oct 20256811 PMAQI
3rd Oct 20256912 AMAQI
3rd Oct 2025701 AMAQI
3rd Oct 2025692 AMAQI
3rd Oct 2025703 AMAQI
3rd Oct 2025664 AMAQI
3rd Oct 2025685 AMAQI

23°C20/27°C

3rd Oct 2025666 AMAQI
3rd Oct 2025677 AMAQI
3rd Oct 2025708 AMAQI
3rd Oct 2025689 AMAQI
3rd Oct 20257710 AMAQI
3rd Oct 20257211 AMAQI
3rd Oct 20256712 PMAQI
3rd Oct 2025631 PMAQI
3rd Oct 2025642 PMAQI
3rd Oct 2025723 PMAQI
3rd Oct 2025794 PMAQI
3rd Oct 2025805 PMAQI
3rd Oct 2025826 PMAQI
3rd Oct 2025797 PMAQI
3rd Oct 2025798 PMAQI
3rd Oct 20251049 PMAQI
3rd Oct 202510210 PMAQI
3rd Oct 20259811 PMAQI
4th Oct 20258412 AMAQI
4th Oct 2025831 AMAQI
4th Oct 2025882 AMAQI
4th Oct 2025763 AMAQI
4th Oct 2025744 AMAQI
4th Oct 2025805 AMAQI

23°C22/26°C

4th Oct 2025796 AMAQI
4th Oct 2025837 AMAQI
4th Oct 2025768 AMAQI
4th Oct 2025809 AMAQI
4th Oct 20257410 AMAQI
4th Oct 20257511 AMAQI
4th Oct 20257012 PMAQI
4th Oct 2025681 PMAQI
4th Oct 2025582 PMAQI
4th Oct 2025423 PMAQI
4th Oct 2025434 PMAQI
4th Oct 2025455 PMAQI
4th Oct 2025436 PMAQI
4th Oct 2025457 PMAQI
4th Oct 2025428 PMAQI
4th Oct 2025429 PMAQI
4th Oct 20254610 PMAQI
4th Oct 20254411 PMAQI
5th Oct 20254012 AMAQI
5th Oct 2025461 AMAQI
5th Oct 2025492 AMAQI
5th Oct 2025513 AMAQI
5th Oct 2025624 AMAQI
5th Oct 2025665 AMAQI

25°C23/28°C

5th Oct 2025656 AMAQI
6 AM
5th Oct 2025657 AMAQI
5th Oct 2025618 AMAQI
5th Oct 2025659 AMAQI
5th Oct 20255810 AMAQI
5th Oct 20256311 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 8 AM

36AQI

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

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 36), while the lowest AQI was between 2 PM to 2 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 11 PM

36AQI

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

36AQI

11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 36), while the lowest AQI was between 12 AM to 11 PM (Avg. 36).

2025 Days Vs Air Quality

Koga Kamimachi, Honmachi, Kumamoto, Japan

2025

68%

188

32%

89

Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)

Good
188 Days
Moderate
89 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 68%

Health Risk Level:

Moderate

In 2025, 68% of 278 days were within WHO’s safe air quality limits, and 32% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Koga Kamimachi, Honmachi, Kumamoto, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
37AQI
2nd January 2025
45AQI
3rd January 2025
43AQI
4th January 2025
40AQI
5th January 2025
44AQI
6th January 2025
46AQI
7th January 2025
33AQI
8th January 2025
40AQI
9th January 2025
31AQI
10th January 2025
33AQI
11th January 2025
28AQI
12th January 2025
36AQI
13th January 2025
43AQI
14th January 2025
45AQI
15th January 2025
51AQI
16th January 2025
44AQI
17th January 2025
49AQI
18th January 2025
51AQI
19th January 2025
58AQI
20th January 2025
53AQI
21st January 2025
74AQI
22nd January 2025
74AQI
23rd January 2025
72AQI
24th January 2025
73AQI
25th January 2025
55AQI
26th January 2025
46AQI
27th January 2025
39AQI
28th January 2025
37AQI
29th January 2025
33AQI
30th January 2025
38AQI
31st January 2025
41AQI
1st February 2025
45AQI
2nd February 2025
33AQI
3rd February 2025
48AQI
4th February 2025
32AQI
5th February 2025
40AQI
6th February 2025
33AQI
7th February 2025
34AQI
8th February 2025
31AQI
9th February 2025
33AQI
10th February 2025
31AQI
11th February 2025
43AQI
12th February 2025
40AQI
13th February 2025
37AQI
14th February 2025
39AQI
15th February 2025
33AQI
16th February 2025
39AQI
17th February 2025
48AQI
18th February 2025
36AQI
19th February 2025
39AQI
20th February 2025
36AQI
21st February 2025
40AQI
22nd February 2025
42AQI
23rd February 2025
37AQI
24th February 2025
41AQI
25th February 2025
38AQI
26th February 2025
39AQI
27th February 2025
66AQI
28th February 2025
51AQI
1st March 2025
54AQI
2nd March 2025
47AQI
3rd March 2025
42AQI
4th March 2025
33AQI
5th March 2025
32AQI
6th March 2025
33AQI
7th March 2025
36AQI
8th March 2025
43AQI
9th March 2025
45AQI
10th March 2025
51AQI
11th March 2025
46AQI
12th March 2025
49AQI
13th March 2025
56AQI
14th March 2025
51AQI
15th March 2025
38AQI
16th March 2025
34AQI
17th March 2025
50AQI
18th March 2025
45AQI
19th March 2025
39AQI
20th March 2025
50AQI
21st March 2025
51AQI
22nd March 2025
62AQI
23rd March 2025
60AQI
24th March 2025
45AQI
25th March 2025
62AQI
26th March 2025
62AQI
27th March 2025
61AQI
28th March 2025
64AQI
29th March 2025
62AQI
30th March 2025
60AQI
31st March 2025
60AQI
1st April 2025
60AQI
2nd April 2025
50AQI
3rd April 2025
53AQI
4th April 2025
51AQI
5th April 2025
54AQI
6th April 2025
56AQI
7th April 2025
51AQI
8th April 2025
50AQI
9th April 2025
59AQI
10th April 2025
53AQI
11th April 2025
61AQI
12th April 2025
60AQI
13th April 2025
56AQI
14th April 2025
61AQI
15th April 2025
45AQI
16th April 2025
58AQI
17th April 2025
54AQI
18th April 2025
57AQI
19th April 2025
56AQI
20th April 2025
51AQI
21st April 2025
54AQI
22nd April 2025
45AQI
23rd April 2025
42AQI
24th April 2025
43AQI
25th April 2025
55AQI
26th April 2025
55AQI
27th April 2025
54AQI
28th April 2025
52AQI
29th April 2025
54AQI
30th April 2025
58AQI
1st May 2025
53AQI
2nd May 2025
48AQI
3rd May 2025
47AQI
4th May 2025
48AQI
5th May 2025
49AQI
6th May 2025
43AQI
7th May 2025
46AQI
8th May 2025
56AQI
9th May 2025
46AQI
10th May 2025
49AQI
11th May 2025
52AQI
12th May 2025
58AQI
13th May 2025
60AQI
14th May 2025
62AQI
15th May 2025
60AQI
16th May 2025
63AQI
17th May 2025
48AQI
18th May 2025
53AQI
19th May 2025
57AQI
20th May 2025
50AQI
21st May 2025
43AQI
22nd May 2025
45AQI
23rd May 2025
54AQI
24th May 2025
49AQI
25th May 2025
48AQI
26th May 2025
50AQI
27th May 2025
50AQI
28th May 2025
55AQI
29th May 2025
56AQI
30th May 2025
51AQI
31st May 2025
53AQI
1st June 2025
55AQI
2nd June 2025
57AQI
3rd June 2025
42AQI
4th June 2025
54AQI
5th June 2025
55AQI
6th June 2025
57AQI
7th June 2025
62AQI
8th June 2025
70AQI
9th June 2025
43AQI
10th June 2025
40AQI
11th June 2025
42AQI
12th June 2025
48AQI
13th June 2025
53AQI
14th June 2025
46AQI
15th June 2025
42AQI
16th June 2025
42AQI
17th June 2025
39AQI
18th June 2025
42AQI
19th June 2025
43AQI
20th June 2025
40AQI
21st June 2025
36AQI
22nd June 2025
26AQI
23rd June 2025
24AQI
24th June 2025
28AQI
25th June 2025
29AQI
26th June 2025
28AQI
27th June 2025
30AQI
28th June 2025
31AQI
29th June 2025
36AQI
30th June 2025
46AQI
1st July 2025
64AQI
2nd July 2025
89AQI
3rd July 2025
92AQI
4th July 2025
94AQI
5th July 2025
80AQI
6th July 2025
68AQI
7th July 2025
60AQI
8th July 2025
63AQI
9th July 2025
66AQI
10th July 2025
59AQI
11th July 2025
49AQI
12th July 2025
46AQI
13th July 2025
44AQI
14th July 2025
41AQI
15th July 2025
47AQI
16th July 2025
55AQI
17th July 2025
52AQI
18th July 2025
40AQI
19th July 2025
38AQI
20th July 2025
36AQI
21st July 2025
32AQI
22nd July 2025
37AQI
23rd July 2025
40AQI
24th July 2025
32AQI
25th July 2025
26AQI
26th July 2025
24AQI
27th July 2025
24AQI
28th July 2025
24AQI
29th July 2025
24AQI
30th July 2025
28AQI
31st July 2025
29AQI
1st August 2025
43AQI
2nd August 2025
47AQI
3rd August 2025
46AQI
4th August 2025
41AQI
5th August 2025
42AQI
6th August 2025
43AQI
7th August 2025
48AQI
8th August 2025
44AQI
9th August 2025
39AQI
10th August 2025
41AQI
11th August 2025
34AQI
12th August 2025
36AQI
13th August 2025
39AQI
14th August 2025
41AQI
15th August 2025
40AQI
16th August 2025
42AQI
17th August 2025
42AQI
18th August 2025
50AQI
19th August 2025
50AQI
20th August 2025
41AQI
21st August 2025
42AQI
22nd August 2025
52AQI
23rd August 2025
45AQI
24th August 2025
36AQI
25th August 2025
36AQI
26th August 2025
34AQI
27th August 2025
40AQI
28th August 2025
41AQI
29th August 2025
45AQI
30th August 2025
50AQI
31st August 2025
47AQI
1st September 2025
37AQI
2nd September 2025
35AQI
3rd September 2025
38AQI
4th September 2025
32AQI
5th September 2025
27AQI
6th September 2025
29AQI
7th September 2025
32AQI
8th September 2025
27AQI
9th September 2025
24AQI
10th September 2025
28AQI
11th September 2025
32AQI
12th September 2025
31AQI
13th September 2025
29AQI
14th September 2025
29AQI
15th September 2025
29AQI
16th September 2025
30AQI
17th September 2025
28AQI
18th September 2025
25AQI
19th September 2025
30AQI
20th September 2025
31AQI
21st September 2025
25AQI
22nd September 2025
33AQI
23rd September 2025
29AQI
24th September 2025
28AQI
25th September 2025
34AQI
26th September 2025
46AQI
27th September 2025
38AQI
28th September 2025
31AQI
29th September 2025
38AQI
30th September 2025
47AQI
1st October 2025
53AQI
2nd October 2025
57AQI
3rd October 2025
75AQI
4th October 2025
80AQI
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

46AQI

39AQI

49AQI

54AQI

52AQI

43AQI

48AQI

42AQI

32AQI

66AQI

No. of days

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

202545AQI

22
9
26
2
17
14
6
24
16
15
22
8
19
12
30
1
30
4
188
89

Highest AQI recorded in

October

66AQI

Lowest AQI recorded in

September

32AQI

202448AQI

1
16
2
1
5
1
2
18
13
21
9
31
16
15
18
12
26
5
13
17
30
1
178
76
19

Highest AQI recorded in

January

107AQI

Lowest AQI recorded in

July

33AQI

202350AQI

19
11
1
14
14
15
16
14
16
15
16
15
15
16
15
12
19
20
10
24
7
18
11
22
6
2
204
156
3

Highest AQI recorded in

June

55AQI

Lowest AQI recorded in

October

42AQI

202253AQI

21
9
14
7
16
15
10
20
16
15
9
21
2
10
10
1
20
7
1
21
10
19
11
20
11
168
137
1
10

Highest AQI recorded in

July

108AQI

Lowest AQI recorded in

December

43AQI

202146AQI

20
11
19
9
15
14
17
4
18
12
1
17
13
26
5
26
5
20
10
16
15
17
13
19
12
230
123
1

Highest AQI recorded in

October

53AQI

Lowest AQI recorded in

July

38AQI

202046AQI

9
4
8
13
11
7
19
11
31
13
16
2
13
6
20
11
15
15
17
14
156
97
2

Highest AQI recorded in

August

57AQI

Lowest AQI recorded in

July

31AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
53AQI
Least Polluted Year Recorded
2025(Avg.)
45AQI

Koga Kamimachi's annual 2025 AQI (45) shows an average percentage change of -6.1% (improved AQI) compared to previous years: 2020 (46), 2021 (46), 2022 (53), 2023 (50), 2024 (48).