Country Background

Miemachi Ichiba, Usuki, Oita, 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

Miemachi Ichiba, Usuki, Oita, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
17th Oct 2025
77AQI
Lowest AQI recorded on
21st Oct 2024
16AQI


Same Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 77 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 17th Oct - 18th Oct 2025

Miemachi Ichiba, Usuki, Oita, Japan

AQI
Day
Night
.

6 AM17th Oct 2025

5 PM

5 AM18th Oct 2025

Day time
Avg. Highest Time
12AMNaNth undefined

AQI

Avg. Lowest Time
12AMNaNth undefined

AQI

Night time
Avg. Highest Time
8AM17th Oct

86AQI

Avg. Lowest Time
3PM17th Oct

34AQI

In the last 24 hours,

Miemachi Ichiba's AQI reached its highest point of 86 at 8 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Oct and 18th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Miemachi Ichiba, Usuki, Oita, Japan

SepOct
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
18th Sep 2025376 AMAQI
18th Sep 2025377 AMAQI
18th Sep 2025388 AMAQI
18th Sep 2025199 AMAQI
18th Sep 20251310 AMAQI
18th Sep 20251211 AMAQI
18th Sep 20251412 PMAQI
18th Sep 2025181 PMAQI
18th Sep 2025162 PMAQI
18th Sep 2025163 PMAQI
18th Sep 2025204 PMAQI
18th Sep 2025225 PMAQI
18th Sep 2025266 PMAQI
18th Sep 2025257 PMAQI
18th Sep 2025288 PMAQI
18th Sep 2025319 PMAQI
18th Sep 20253010 PMAQI
18th Sep 20253011 PMAQI
19th Sep 20252612 AMAQI
19th Sep 2025261 AMAQI
19th Sep 2025332 AMAQI
19th Sep 2025343 AMAQI
19th Sep 2025324 AMAQI
19th Sep 2025305 AMAQI

23°C18/29°C

19th Sep 2025316 AMAQI
19th Sep 2025307 AMAQI
19th Sep 2025308 AMAQI
19th Sep 2025189 AMAQI
19th Sep 20251510 AMAQI
19th Sep 20251811 AMAQI
19th Sep 20252012 PMAQI
19th Sep 2025261 PMAQI
19th Sep 2025282 PMAQI
19th Sep 2025353 PMAQI
19th Sep 2025404 PMAQI
19th Sep 2025385 PMAQI
19th Sep 2025316 PMAQI
19th Sep 2025347 PMAQI
19th Sep 2025318 PMAQI
19th Sep 2025319 PMAQI
19th Sep 20253210 PMAQI
19th Sep 20253011 PMAQI
20th Sep 20253112 AMAQI
20th Sep 2025321 AMAQI
20th Sep 2025302 AMAQI
20th Sep 2025303 AMAQI
20th Sep 2025294 AMAQI
20th Sep 2025285 AMAQI

22°C17/29°C

20th Sep 2025286 AMAQI
20th Sep 2025297 AMAQI
20th Sep 2025288 AMAQI
20th Sep 2025389 AMAQI
20th Sep 20254510 AMAQI
20th Sep 20254411 AMAQI
20th Sep 20255412 PMAQI
20th Sep 2025551 PMAQI
20th Sep 2025602 PMAQI
20th Sep 2025533 PMAQI
20th Sep 2025374 PMAQI
20th Sep 2025245 PMAQI
20th Sep 2025226 PMAQI
20th Sep 2025237 PMAQI
20th Sep 2025228 PMAQI
20th Sep 2025269 PMAQI
20th Sep 20252310 PMAQI
20th Sep 20252511 PMAQI
21st Sep 20252312 AMAQI
21st Sep 2025231 AMAQI
21st Sep 2025282 AMAQI
21st Sep 2025283 AMAQI
21st Sep 2025314 AMAQI
21st Sep 2025335 AMAQI

22°C17/27°C

21st Sep 2025346 AMAQI
21st Sep 2025347 AMAQI
21st Sep 2025348 AMAQI
21st Sep 2025209 AMAQI
21st Sep 20251510 AMAQI
21st Sep 20251511 AMAQI
21st Sep 20251612 PMAQI
21st Sep 2025181 PMAQI
21st Sep 2025202 PMAQI
21st Sep 2025183 PMAQI
21st Sep 2025204 PMAQI
21st Sep 2025265 PMAQI
21st Sep 2025246 PMAQI
21st Sep 2025267 PMAQI
21st Sep 2025278 PMAQI
21st Sep 2025289 PMAQI
21st Sep 20252810 PMAQI
21st Sep 20252811 PMAQI
22nd Sep 20252612 AMAQI
22nd Sep 2025281 AMAQI
22nd Sep 2025282 AMAQI
22nd Sep 2025293 AMAQI
22nd Sep 2025284 AMAQI
22nd Sep 2025275 AMAQI

22°C18/28°C

22nd Sep 2025276 AMAQI
22nd Sep 2025277 AMAQI
22nd Sep 2025278 AMAQI
22nd Sep 2025229 AMAQI
22nd Sep 20252210 AMAQI
22nd Sep 20252311 AMAQI
22nd Sep 20252812 PMAQI
22nd Sep 2025301 PMAQI
22nd Sep 2025302 PMAQI
22nd Sep 2025293 PMAQI
22nd Sep 2025264 PMAQI
22nd Sep 2025285 PMAQI
22nd Sep 2025296 PMAQI
22nd Sep 2025307 PMAQI
22nd Sep 2025308 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252910 PMAQI
22nd Sep 20252811 PMAQI
23rd Sep 20252812 AMAQI
23rd Sep 2025281 AMAQI
23rd Sep 2025282 AMAQI
23rd Sep 2025283 AMAQI
23rd Sep 2025284 AMAQI
23rd Sep 2025285 AMAQI

19°C13/25°C

23rd Sep 2025286 AMAQI
23rd Sep 2025287 AMAQI
23rd Sep 2025288 AMAQI
23rd Sep 2025259 AMAQI
23rd Sep 20252310 AMAQI
23rd Sep 20252811 AMAQI
23rd Sep 20252912 PMAQI
23rd Sep 2025271 PMAQI
23rd Sep 2025272 PMAQI
23rd Sep 2025223 PMAQI
23rd Sep 2025254 PMAQI
23rd Sep 2025255 PMAQI
23rd Sep 2025276 PMAQI
23rd Sep 2025257 PMAQI
23rd Sep 2025258 PMAQI
23rd Sep 2025279 PMAQI
23rd Sep 20252610 PMAQI
23rd Sep 20252411 PMAQI
24th Sep 20252312 AMAQI
24th Sep 2025231 AMAQI
24th Sep 2025282 AMAQI
24th Sep 2025283 AMAQI
24th Sep 2025284 AMAQI
24th Sep 2025275 AMAQI

22°C17/27°C

24th Sep 2025276 AMAQI
24th Sep 2025277 AMAQI
24th Sep 2025278 AMAQI
24th Sep 2025189 AMAQI
24th Sep 20251410 AMAQI
24th Sep 20251611 AMAQI
24th Sep 20251512 PMAQI
24th Sep 2025201 PMAQI
24th Sep 2025192 PMAQI
24th Sep 2025203 PMAQI
24th Sep 2025204 PMAQI
24th Sep 2025185 PMAQI
24th Sep 2025206 PMAQI
24th Sep 2025197 PMAQI
24th Sep 2025208 PMAQI
24th Sep 2025239 PMAQI
24th Sep 20252310 PMAQI
24th Sep 20252311 PMAQI
25th Sep 20252312 AMAQI
25th Sep 2025231 AMAQI
25th Sep 2025262 AMAQI
25th Sep 2025263 AMAQI
25th Sep 2025254 AMAQI
25th Sep 2025245 AMAQI

22°C18/26°C

25th Sep 2025246 AMAQI
25th Sep 2025247 AMAQI
25th Sep 2025258 AMAQI
25th Sep 2025159 AMAQI
25th Sep 20251410 AMAQI
25th Sep 20251111 AMAQI
25th Sep 20251212 PMAQI
25th Sep 2025151 PMAQI
25th Sep 2025202 PMAQI
25th Sep 2025243 PMAQI
25th Sep 2025244 PMAQI
25th Sep 2025235 PMAQI
25th Sep 2025226 PMAQI
25th Sep 2025207 PMAQI
25th Sep 2025198 PMAQI
25th Sep 2025179 PMAQI
25th Sep 20252010 PMAQI
25th Sep 20252211 PMAQI
26th Sep 20252212 AMAQI
26th Sep 2025151 AMAQI
26th Sep 2025152 AMAQI
26th Sep 2025173 AMAQI
26th Sep 2025204 AMAQI
26th Sep 2025165 AMAQI

22°C18/27°C

26th Sep 2025156 AMAQI
26th Sep 2025207 AMAQI
26th Sep 2025228 AMAQI
26th Sep 2025299 AMAQI
26th Sep 20254710 AMAQI
26th Sep 20255511 AMAQI
26th Sep 20255412 PMAQI
26th Sep 2025491 PMAQI
26th Sep 2025522 PMAQI
26th Sep 2025563 PMAQI
26th Sep 2025564 PMAQI
26th Sep 2025445 PMAQI
26th Sep 2025266 PMAQI
26th Sep 2025267 PMAQI
26th Sep 2025238 PMAQI
26th Sep 2025219 PMAQI
26th Sep 20251910 PMAQI
26th Sep 20251411 PMAQI
27th Sep 20251112 AMAQI
27th Sep 2025111 AMAQI
27th Sep 2025132 AMAQI
27th Sep 2025223 AMAQI
27th Sep 2025264 AMAQI
27th Sep 2025225 AMAQI

23°C17/29°C

27th Sep 2025266 AMAQI
27th Sep 2025217 AMAQI
27th Sep 2025248 AMAQI
27th Sep 2025249 AMAQI
27th Sep 20252610 AMAQI
27th Sep 20252811 AMAQI
27th Sep 20252912 PMAQI
27th Sep 2025361 PMAQI
27th Sep 2025332 PMAQI
27th Sep 2025283 PMAQI
27th Sep 2025314 PMAQI
27th Sep 2025335 PMAQI
27th Sep 2025306 PMAQI
27th Sep 2025287 PMAQI
27th Sep 2025288 PMAQI
27th Sep 2025309 PMAQI
27th Sep 20253310 PMAQI
27th Sep 20252711 PMAQI
28th Sep 20252012 AMAQI
28th Sep 2025201 AMAQI
28th Sep 2025262 AMAQI
28th Sep 2025243 AMAQI
28th Sep 2025224 AMAQI
28th Sep 2025225 AMAQI

20°C16/25°C

28th Sep 2025296 AMAQI
28th Sep 2025267 AMAQI
28th Sep 2025268 AMAQI
28th Sep 2025269 AMAQI
28th Sep 20253010 AMAQI
28th Sep 20253711 AMAQI
28th Sep 20253612 PMAQI
28th Sep 2025321 PMAQI
28th Sep 2025332 PMAQI
28th Sep 2025373 PMAQI
28th Sep 2025374 PMAQI
28th Sep 2025265 PMAQI
28th Sep 2025226 PMAQI
28th Sep 2025177 PMAQI
28th Sep 2025198 PMAQI
28th Sep 2025189 PMAQI
28th Sep 20251710 PMAQI
28th Sep 20251711 PMAQI
29th Sep 20251712 AMAQI
29th Sep 2025171 AMAQI
29th Sep 2025162 AMAQI
29th Sep 2025173 AMAQI
29th Sep 2025184 AMAQI
29th Sep 2025205 AMAQI

22°C17/27°C

29th Sep 2025326 AMAQI
29th Sep 2025327 AMAQI
29th Sep 2025218 AMAQI
29th Sep 2025249 AMAQI
29th Sep 20252810 AMAQI
29th Sep 20252411 AMAQI
29th Sep 20252212 PMAQI
29th Sep 2025171 PMAQI
29th Sep 2025122 PMAQI
29th Sep 2025183 PMAQI
29th Sep 2025294 PMAQI
29th Sep 2025305 PMAQI
29th Sep 2025356 PMAQI
29th Sep 2025357 PMAQI
29th Sep 2025308 PMAQI
29th Sep 2025299 PMAQI
29th Sep 20252810 PMAQI
29th Sep 20252311 PMAQI
30th Sep 20252012 AMAQI
30th Sep 2025211 AMAQI
30th Sep 2025192 AMAQI
30th Sep 2025193 AMAQI
30th Sep 2025234 AMAQI
30th Sep 2025225 AMAQI

21°C17/26°C

30th Sep 2025216 AMAQI
30th Sep 2025127 AMAQI
30th Sep 2025118 AMAQI
30th Sep 2025139 AMAQI
30th Sep 20252110 AMAQI
30th Sep 20251911 AMAQI
30th Sep 20252012 PMAQI
30th Sep 2025181 PMAQI
30th Sep 2025272 PMAQI
30th Sep 2025373 PMAQI
30th Sep 2025354 PMAQI
30th Sep 2025265 PMAQI
30th Sep 2025206 PMAQI
30th Sep 2025207 PMAQI
30th Sep 2025278 PMAQI
30th Sep 2025299 PMAQI
30th Sep 20252510 PMAQI
30th Sep 20252811 PMAQI
1st Oct 20252212 AMAQI
1st Oct 2025191 AMAQI
1st Oct 2025202 AMAQI
1st Oct 2025223 AMAQI
1st Oct 2025314 AMAQI
1st Oct 2025335 AMAQI

17°C12/24°C

1st Oct 2025346 AMAQI
1st Oct 2025297 AMAQI
1st Oct 2025308 AMAQI
1st Oct 2025289 AMAQI
1st Oct 20252810 AMAQI
1st Oct 20252811 AMAQI
1st Oct 20253812 PMAQI
1st Oct 2025441 PMAQI
1st Oct 2025422 PMAQI
1st Oct 2025403 PMAQI
1st Oct 2025424 PMAQI
1st Oct 2025445 PMAQI
1st Oct 2025426 PMAQI
1st Oct 2025447 PMAQI
1st Oct 2025488 PMAQI
1st Oct 2025539 PMAQI
1st Oct 20255510 PMAQI
1st Oct 20255511 PMAQI
2nd Oct 20255612 AMAQI
2nd Oct 2025561 AMAQI
2nd Oct 2025552 AMAQI
2nd Oct 2025543 AMAQI
2nd Oct 2025564 AMAQI
2nd Oct 2025545 AMAQI

18°C13/26°C

2nd Oct 2025546 AMAQI
2nd Oct 2025577 AMAQI
2nd Oct 2025568 AMAQI
2nd Oct 2025569 AMAQI
2nd Oct 20255610 AMAQI
2nd Oct 20255811 AMAQI
2nd Oct 20255812 PMAQI
2nd Oct 2025571 PMAQI
2nd Oct 2025582 PMAQI
2nd Oct 2025543 PMAQI
2nd Oct 2025574 PMAQI
2nd Oct 2025545 PMAQI
2nd Oct 2025526 PMAQI
2nd Oct 2025517 PMAQI
2nd Oct 2025538 PMAQI
2nd Oct 2025539 PMAQI
2nd Oct 20255110 PMAQI
2nd Oct 20254911 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025501 AMAQI
3rd Oct 2025482 AMAQI
3rd Oct 2025493 AMAQI
3rd Oct 2025464 AMAQI
3rd Oct 2025405 AMAQI

19°C12/27°C

3rd Oct 2025416 AMAQI
3rd Oct 2025447 AMAQI
3rd Oct 2025468 AMAQI
3rd Oct 2025549 AMAQI
3rd Oct 20255210 AMAQI
3rd Oct 20254811 AMAQI
3rd Oct 20254912 PMAQI
3rd Oct 2025521 PMAQI
3rd Oct 2025542 PMAQI
3rd Oct 2025543 PMAQI
3rd Oct 2025564 PMAQI
3rd Oct 2025565 PMAQI
3rd Oct 2025566 PMAQI
3rd Oct 2025587 PMAQI
3rd Oct 2025508 PMAQI
3rd Oct 2025639 PMAQI
3rd Oct 20256610 PMAQI
3rd Oct 20256611 PMAQI
4th Oct 20256812 AMAQI
4th Oct 2025661 AMAQI
4th Oct 2025622 AMAQI
4th Oct 2025623 AMAQI
4th Oct 2025634 AMAQI
4th Oct 2025595 AMAQI

16°C14/18°C

4th Oct 2025596 AMAQI
4th Oct 2025577 AMAQI
4th Oct 2025558 AMAQI
4th Oct 2025569 AMAQI
4th Oct 20255810 AMAQI
4th Oct 20255911 AMAQI
4th Oct 20256012 PMAQI
4th Oct 2025621 PMAQI
4th Oct 2025652 PMAQI
4th Oct 2025663 PMAQI
4th Oct 2025434 PMAQI
4th Oct 2025385 PMAQI
4th Oct 2025386 PMAQI
4th Oct 2025557 PMAQI
4th Oct 2025598 PMAQI
4th Oct 2025619 PMAQI
4th Oct 20254010 PMAQI
4th Oct 20255311 PMAQI
5th Oct 20255512 AMAQI
5th Oct 2025571 AMAQI
5th Oct 2025562 AMAQI
5th Oct 2025583 AMAQI
5th Oct 2025564 AMAQI
5th Oct 2025545 AMAQI

21°C16/28°C

5th Oct 2025556 AMAQI
5th Oct 2025467 AMAQI
5th Oct 2025468 AMAQI
5th Oct 2025469 AMAQI
5th Oct 20254710 AMAQI
5th Oct 20254711 AMAQI
5th Oct 20254212 PMAQI
5th Oct 2025451 PMAQI
5th Oct 2025632 PMAQI
5th Oct 2025633 PMAQI
5th Oct 2025604 PMAQI
5th Oct 2025615 PMAQI
5th Oct 2025576 PMAQI
5th Oct 2025567 PMAQI
5th Oct 2025548 PMAQI
5th Oct 2025469 PMAQI
5th Oct 20253910 PMAQI
5th Oct 20254111 PMAQI
6th Oct 20255212 AMAQI
6th Oct 2025551 AMAQI
6th Oct 2025482 AMAQI
6th Oct 2025453 AMAQI
6th Oct 2025524 AMAQI
6th Oct 2025545 AMAQI

21°C18/28°C

6th Oct 2025436 AMAQI
6th Oct 2025437 AMAQI
6th Oct 2025408 AMAQI
6th Oct 2025519 AMAQI
6th Oct 20255510 AMAQI
6th Oct 20255611 AMAQI
6th Oct 20254812 PMAQI
6th Oct 2025471 PMAQI
6th Oct 2025452 PMAQI
6th Oct 2025543 PMAQI
6th Oct 2025564 PMAQI
6th Oct 2025585 PMAQI
6th Oct 2025576 PMAQI
6th Oct 2025457 PMAQI
6th Oct 2025388 PMAQI
6th Oct 2025539 PMAQI
6th Oct 20255810 PMAQI
6th Oct 20255811 PMAQI
7th Oct 20255812 AMAQI
7th Oct 2025581 AMAQI
7th Oct 2025582 AMAQI

22°C15/29°C

7th Oct 2025508 PMAQI
7th Oct 2025439 PMAQI
7th Oct 20256910 PMAQI
7th Oct 20255611 PMAQI
8th Oct 20255512 AMAQI
8th Oct 2025551 AMAQI
8th Oct 2025582 AMAQI
8th Oct 2025563 AMAQI
8th Oct 2025684 AMAQI
8th Oct 2025695 AMAQI

22°C15/30°C

8th Oct 2025516 AMAQI
8th Oct 2025527 AMAQI
8th Oct 2025528 AMAQI
8th Oct 2025449 AMAQI
8th Oct 20255410 AMAQI
8th Oct 20255411 AMAQI
8th Oct 20255412 PMAQI
8th Oct 2025601 PMAQI
8th Oct 2025602 PMAQI
8th Oct 2025653 PMAQI
8th Oct 2025674 PMAQI
8th Oct 2025685 PMAQI
8th Oct 2025646 PMAQI
8th Oct 2025637 PMAQI
8th Oct 2025598 PMAQI
8th Oct 2025639 PMAQI
8th Oct 20255910 PMAQI
8th Oct 20256011 PMAQI
9th Oct 20256012 AMAQI
9th Oct 2025601 AMAQI
9th Oct 2025592 AMAQI
9th Oct 2025583 AMAQI
9th Oct 2025584 AMAQI
9th Oct 2025495 AMAQI

22°C16/28°C

9th Oct 2025476 AMAQI
9th Oct 2025407 AMAQI
9th Oct 2025398 AMAQI
9th Oct 2025379 AMAQI
9th Oct 20254610 AMAQI
9th Oct 20255311 AMAQI
9th Oct 20255412 PMAQI
9th Oct 2025551 PMAQI
9th Oct 2025522 PMAQI
9th Oct 2025503 PMAQI
9th Oct 2025494 PMAQI
9th Oct 2025455 PMAQI
9th Oct 2025526 PMAQI
9th Oct 2025517 PMAQI
9th Oct 2025528 PMAQI
9th Oct 2025499 PMAQI
9th Oct 20255410 PMAQI
9th Oct 20255011 PMAQI
10th Oct 20255412 AMAQI
10th Oct 2025561 AMAQI
10th Oct 2025542 AMAQI
10th Oct 2025543 AMAQI
10th Oct 2025564 AMAQI
10th Oct 2025545 AMAQI

20°C15/27°C

10th Oct 2025486 AMAQI
10th Oct 2025537 AMAQI
10th Oct 2025528 AMAQI
10th Oct 2025499 AMAQI
10th Oct 20255110 AMAQI
10th Oct 20255311 AMAQI
10th Oct 20255512 PMAQI
10th Oct 2025541 PMAQI
10th Oct 2025542 PMAQI
10th Oct 2025533 PMAQI
10th Oct 2025624 PMAQI
10th Oct 2025635 PMAQI
10th Oct 2025626 PMAQI
10th Oct 2025647 PMAQI
10th Oct 2025618 PMAQI
10th Oct 2025559 PMAQI
10th Oct 20255010 PMAQI
10th Oct 20255111 PMAQI
11th Oct 20255612 AMAQI
11th Oct 2025591 AMAQI
11th Oct 2025572 AMAQI
11th Oct 2025603 AMAQI
11th Oct 2025624 AMAQI
11th Oct 2025555 AMAQI

20°C11/29°C

11th Oct 2025426 AMAQI
11th Oct 2025397 AMAQI
11th Oct 2025398 AMAQI
11th Oct 2025579 AMAQI
11th Oct 20256410 AMAQI
11th Oct 20255911 AMAQI
11th Oct 20255712 PMAQI
11th Oct 2025541 PMAQI
11th Oct 2025562 PMAQI
11th Oct 2025563 PMAQI
11th Oct 2025564 PMAQI
11th Oct 2025725 PMAQI
11th Oct 2025656 PMAQI
11th Oct 2025617 PMAQI
11th Oct 2025598 PMAQI
11th Oct 2025589 PMAQI
11th Oct 20255910 PMAQI
11th Oct 20256211 PMAQI
12th Oct 20256112 AMAQI
12th Oct 2025621 AMAQI
12th Oct 2025722 AMAQI
12th Oct 2025793 AMAQI
12th Oct 2025694 AMAQI
12th Oct 2025705 AMAQI

21°C14/30°C

12th Oct 2025676 AMAQI
12th Oct 2025667 AMAQI
12th Oct 2025688 AMAQI
12th Oct 2025739 AMAQI
12th Oct 20257810 AMAQI
12th Oct 20257111 AMAQI
12th Oct 20256912 PMAQI
12th Oct 2025761 PMAQI
12th Oct 2025862 PMAQI
12th Oct 2025823 PMAQI
12th Oct 2025774 PMAQI
12th Oct 2025805 PMAQI
12th Oct 2025766 PMAQI
12th Oct 2025627 PMAQI
12th Oct 2025468 PMAQI
12th Oct 2025459 PMAQI
12th Oct 20255010 PMAQI
12th Oct 20254511 PMAQI
13th Oct 20255212 AMAQI
13th Oct 2025491 AMAQI
13th Oct 2025442 AMAQI
13th Oct 2025493 AMAQI
13th Oct 2025504 AMAQI
13th Oct 2025515 AMAQI

20°C16/25°C

13th Oct 2025556 AMAQI
13th Oct 2025567 AMAQI
13th Oct 2025548 AMAQI
13th Oct 2025569 AMAQI
13th Oct 20255610 AMAQI
13th Oct 20255411 AMAQI
13th Oct 20255612 PMAQI
13th Oct 2025531 PMAQI
13th Oct 2025532 PMAQI
13th Oct 2025553 PMAQI
13th Oct 2025534 PMAQI
13th Oct 2025535 PMAQI
13th Oct 2025396 PMAQI
13th Oct 2025347 PMAQI
13th Oct 2025408 PMAQI
13th Oct 2025409 PMAQI
13th Oct 20254210 PMAQI
13th Oct 20253811 PMAQI
14th Oct 20254412 AMAQI
14th Oct 2025481 AMAQI
14th Oct 2025492 AMAQI
14th Oct 2025473 AMAQI
14th Oct 2025444 AMAQI
14th Oct 2025385 AMAQI

19°C15/25°C

14th Oct 2025406 AMAQI
14th Oct 2025417 AMAQI
14th Oct 2025488 AMAQI
14th Oct 2025519 AMAQI
14th Oct 20255510 AMAQI
14th Oct 20255911 AMAQI
14th Oct 20256412 PMAQI
14th Oct 2025651 PMAQI
14th Oct 2025682 PMAQI
14th Oct 2025653 PMAQI
14th Oct 2025684 PMAQI
14th Oct 2025755 PMAQI
14th Oct 2025656 PMAQI
14th Oct 2025647 PMAQI
14th Oct 2025658 PMAQI
14th Oct 2025689 PMAQI
14th Oct 20256610 PMAQI
14th Oct 20255511 PMAQI
15th Oct 20255512 AMAQI
15th Oct 2025561 AMAQI
15th Oct 2025532 AMAQI
15th Oct 2025543 AMAQI
15th Oct 2025554 AMAQI
15th Oct 2025565 AMAQI

18°C14/24°C

15th Oct 2025606 AMAQI
15th Oct 2025607 AMAQI
15th Oct 2025598 AMAQI
15th Oct 2025619 AMAQI
15th Oct 20255910 AMAQI
15th Oct 20255711 AMAQI
15th Oct 20255612 PMAQI
15th Oct 2025551 PMAQI
15th Oct 2025522 PMAQI
15th Oct 2025483 PMAQI
15th Oct 2025474 PMAQI
15th Oct 2025525 PMAQI
15th Oct 2025566 PMAQI
15th Oct 2025557 PMAQI
15th Oct 2025558 PMAQI
15th Oct 2025549 PMAQI
15th Oct 20255310 PMAQI
15th Oct 20255411 PMAQI
16th Oct 20256112 AMAQI
16th Oct 2025601 AMAQI
16th Oct 2025602 AMAQI
16th Oct 2025563 AMAQI
16th Oct 2025584 AMAQI
16th Oct 2025585 AMAQI

21°C16/27°C

16th Oct 2025596 AMAQI
16th Oct 2025607 AMAQI
16th Oct 2025668 AMAQI
16th Oct 2025659 AMAQI
16th Oct 20255610 AMAQI
16th Oct 20255611 AMAQI
16th Oct 20255712 PMAQI
16th Oct 2025571 PMAQI
16th Oct 2025802 PMAQI
16th Oct 2025823 PMAQI
16th Oct 2025924 PMAQI
16th Oct 2025875 PMAQI
16th Oct 2025836 PMAQI
16th Oct 2025827 PMAQI
16th Oct 2025808 PMAQI
16th Oct 2025759 PMAQI
16th Oct 20258710 PMAQI
16th Oct 20257811 PMAQI
17th Oct 20258112 AMAQI
17th Oct 2025831 AMAQI
17th Oct 2025782 AMAQI
17th Oct 2025843 AMAQI
17th Oct 2025824 AMAQI
17th Oct 2025825 AMAQI

21°C16/27°C

17th Oct 2025836 AMAQI
17th Oct 2025827 AMAQI
17th Oct 2025868 AMAQI
17th Oct 2025819 AMAQI
17th Oct 20257810 AMAQI
17th Oct 20258111 AMAQI
17th Oct 20255912 PMAQI
17th Oct 2025411 PMAQI
17th Oct 2025342 PMAQI
17th Oct 2025343 PMAQI
17th Oct 2025414 PMAQI
17th Oct 2025445 PMAQI
17th Oct 2025466 PMAQI
17th Oct 2025507 PMAQI
17th Oct 2025568 PMAQI
17th Oct 2025569 PMAQI
17th Oct 20256010 PMAQI
17th Oct 20255511 PMAQI
18th Oct 20255512 AMAQI
18th Oct 2025531 AMAQI
18th Oct 2025512 AMAQI
18th Oct 2025523 AMAQI
18th Oct 2025504 AMAQI

--°C/°C

6 AM
11 AM
5 PM
11 PM
5 AM

--°C/°C

Day time
Avg. Highest Time
2 PM - 5 PM

45AQI

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

41AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 5 PM (Avg. 45), while the lowest AQI was between 6 AM to 9 AM (Avg. 41).
Night time
Avg. Highest Time
12 AM - 11 PM

42AQI

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

42AQI

12 hours / Day
360 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).

2025 Days Vs Air Quality

Miemachi Ichiba, Usuki, Oita, Japan

2025

77%

224

22%

65

0.3%

1

Total number of days with different AQI categories in last 290 days in 2025 (75 days remaining)

Good
224 Days
Moderate
65 Days
Poor
1 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 77%

Health Risk Level:

Low

In 2025, 77% of 290 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

Miemachi Ichiba, Usuki, Oita, 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
30AQI
2nd January 2025
36AQI
3rd January 2025
34AQI
4th January 2025
34AQI
5th January 2025
31AQI
6th January 2025
35AQI
7th January 2025
33AQI
8th January 2025
35AQI
9th January 2025
30AQI
10th January 2025
30AQI
11th January 2025
27AQI
12th January 2025
33AQI
13th January 2025
42AQI
14th January 2025
41AQI
15th January 2025
39AQI
16th January 2025
37AQI
17th January 2025
40AQI
18th January 2025
37AQI
19th January 2025
42AQI
20th January 2025
38AQI
21st January 2025
57AQI
22nd January 2025
55AQI
23rd January 2025
61AQI
24th January 2025
63AQI
25th January 2025
45AQI
26th January 2025
40AQI
27th January 2025
34AQI
28th January 2025
35AQI
29th January 2025
32AQI
30th January 2025
36AQI
31st January 2025
41AQI
1st February 2025
41AQI
2nd February 2025
33AQI
3rd February 2025
40AQI
4th February 2025
32AQI
5th February 2025
37AQI
6th February 2025
31AQI
7th February 2025
33AQI
8th February 2025
31AQI
9th February 2025
30AQI
10th February 2025
34AQI
11th February 2025
37AQI
12th February 2025
38AQI
13th February 2025
32AQI
14th February 2025
38AQI
15th February 2025
32AQI
16th February 2025
45AQI
17th February 2025
42AQI
18th February 2025
37AQI
19th February 2025
36AQI
20th February 2025
33AQI
21st February 2025
34AQI
22nd February 2025
39AQI
23rd February 2025
40AQI
24th February 2025
36AQI
25th February 2025
37AQI
26th February 2025
38AQI
27th February 2025
57AQI
28th February 2025
55AQI
1st March 2025
69AQI
2nd March 2025
63AQI
3rd March 2025
47AQI
4th March 2025
35AQI
5th March 2025
34AQI
6th March 2025
35AQI
7th March 2025
33AQI
8th March 2025
40AQI
9th March 2025
40AQI
10th March 2025
43AQI
11th March 2025
44AQI
12th March 2025
47AQI
13th March 2025
57AQI
14th March 2025
39AQI
15th March 2025
38AQI
16th March 2025
27AQI
17th March 2025
49AQI
18th March 2025
37AQI
19th March 2025
42AQI
20th March 2025
46AQI
21st March 2025
56AQI
22nd March 2025
59AQI
23rd March 2025
64AQI
24th March 2025
53AQI
25th March 2025
71AQI
26th March 2025
68AQI
27th March 2025
55AQI
28th March 2025
59AQI
29th March 2025
51AQI
30th March 2025
41AQI
31st March 2025
40AQI
1st April 2025
42AQI
2nd April 2025
34AQI
3rd April 2025
32AQI
4th April 2025
35AQI
5th April 2025
41AQI
6th April 2025
46AQI
7th April 2025
41AQI
8th April 2025
34AQI
9th April 2025
55AQI
10th April 2025
48AQI
11th April 2025
57AQI
12th April 2025
55AQI
13th April 2025
44AQI
14th April 2025
51AQI
15th April 2025
29AQI
16th April 2025
50AQI
17th April 2025
45AQI
18th April 2025
52AQI
19th April 2025
51AQI
20th April 2025
38AQI
21st April 2025
45AQI
22nd April 2025
32AQI
23rd April 2025
30AQI
24th April 2025
35AQI
25th April 2025
52AQI
26th April 2025
44AQI
27th April 2025
50AQI
28th April 2025
49AQI
29th April 2025
50AQI
30th April 2025
50AQI
1st May 2025
45AQI
2nd May 2025
39AQI
3rd May 2025
49AQI
4th May 2025
38AQI
5th May 2025
40AQI
6th May 2025
38AQI
7th May 2025
36AQI
8th May 2025
42AQI
9th May 2025
29AQI
10th May 2025
40AQI
11th May 2025
36AQI
12th May 2025
51AQI
13th May 2025
55AQI
14th May 2025
59AQI
15th May 2025
56AQI
16th May 2025
53AQI
17th May 2025
39AQI
18th May 2025
49AQI
19th May 2025
58AQI
20th May 2025
59AQI
21st May 2025
39AQI
22nd May 2025
42AQI
23rd May 2025
47AQI
24th May 2025
30AQI
25th May 2025
32AQI
26th May 2025
33AQI
27th May 2025
41AQI
28th May 2025
40AQI
29th May 2025
36AQI
30th May 2025
40AQI
31st May 2025
40AQI
1st June 2025
48AQI
2nd June 2025
48AQI
3rd June 2025
31AQI
4th June 2025
42AQI
5th June 2025
44AQI
6th June 2025
55AQI
7th June 2025
63AQI
8th June 2025
56AQI
9th June 2025
33AQI
10th June 2025
31AQI
11th June 2025
42AQI
12th June 2025
44AQI
13th June 2025
46AQI
14th June 2025
34AQI
15th June 2025
29AQI
16th June 2025
28AQI
17th June 2025
33AQI
18th June 2025
37AQI
19th June 2025
45AQI
20th June 2025
54AQI
21st June 2025
54AQI
22nd June 2025
52AQI
23rd June 2025
36AQI
24th June 2025
41AQI
25th June 2025
43AQI
26th June 2025
35AQI
27th June 2025
44AQI
28th June 2025
45AQI
29th June 2025
50AQI
30th June 2025
52AQI
1st July 2025
66AQI
2nd July 2025
92AQI
3rd July 2025
97AQI
4th July 2025
106AQI
5th July 2025
94AQI
6th July 2025
69AQI
7th July 2025
66AQI
8th July 2025
70AQI
9th July 2025
78AQI
10th July 2025
61AQI
11th July 2025
45AQI
12th July 2025
43AQI
13th July 2025
39AQI
14th July 2025
38AQI
15th July 2025
48AQI
16th July 2025
54AQI
17th July 2025
41AQI
18th July 2025
32AQI
19th July 2025
30AQI
20th July 2025
28AQI
21st July 2025
26AQI
22nd July 2025
27AQI
23rd July 2025
26AQI
24th July 2025
24AQI
25th July 2025
22AQI
26th July 2025
21AQI
27th July 2025
21AQI
28th July 2025
22AQI
29th July 2025
21AQI
30th July 2025
23AQI
31st July 2025
34AQI
1st August 2025
42AQI
2nd August 2025
47AQI
3rd August 2025
50AQI
4th August 2025
49AQI
5th August 2025
47AQI
6th August 2025
46AQI
7th August 2025
39AQI
8th August 2025
39AQI
9th August 2025
34AQI
10th August 2025
35AQI
11th August 2025
30AQI
12th August 2025
36AQI
13th August 2025
39AQI
14th August 2025
45AQI
15th August 2025
49AQI
16th August 2025
45AQI
17th August 2025
44AQI
18th August 2025
47AQI
19th August 2025
50AQI
20th August 2025
39AQI
21st August 2025
38AQI
22nd August 2025
43AQI
23rd August 2025
44AQI
24th August 2025
45AQI
25th August 2025
47AQI
26th August 2025
43AQI
27th August 2025
40AQI
28th August 2025
46AQI
29th August 2025
50AQI
30th August 2025
51AQI
31st August 2025
47AQI
1st September 2025
38AQI
2nd September 2025
38AQI
3rd September 2025
36AQI
4th September 2025
27AQI
5th September 2025
25AQI
6th September 2025
30AQI
7th September 2025
36AQI
8th September 2025
29AQI
9th September 2025
29AQI
10th September 2025
27AQI
11th September 2025
31AQI
12th September 2025
30AQI
13th September 2025
31AQI
14th September 2025
31AQI
15th September 2025
35AQI
16th September 2025
45AQI
17th September 2025
36AQI
18th September 2025
27AQI
19th September 2025
30AQI
20th September 2025
33AQI
21st September 2025
26AQI
22nd September 2025
28AQI
23rd September 2025
27AQI
24th September 2025
22AQI
25th September 2025
21AQI
26th September 2025
28AQI
27th September 2025
26AQI
28th September 2025
25AQI
29th September 2025
24AQI
30th September 2025
22AQI
1st October 2025
37AQI
2nd October 2025
54AQI
3rd October 2025
52AQI
4th October 2025
57AQI
5th October 2025
53AQI
6th October 2025
51AQI
7th October 2025
56AQI
8th October 2025
59AQI
9th October 2025
51AQI
10th October 2025
55AQI
11th October 2025
57AQI
12th October 2025
67AQI
13th October 2025
48AQI
14th October 2025
56AQI
15th October 2025
55AQI
16th October 2025
69AQI
17th October 2025
77AQI
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

39AQI

37AQI

48AQI

44AQI

43AQI

43AQI

47AQI

43AQI

30AQI

56AQI


No. of days

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

202543AQI

27
4
26
2
19
12
23
7
24
7
23
7
20
10
1
30
1
30
2
15
224
65
1

Highest AQI recorded in

October

56AQI


Lowest AQI recorded in

September

30AQI


202434AQI

31
26
3
29
2
28
2
29
2
30
31
23
8
26
4
31
28
2
31
343
23

Highest AQI recorded in

May

40AQI


Lowest AQI recorded in

July

29AQI


202335AQI

28
3
26
2
29
2
25
5
27
4
25
5
30
31
29
1
29
2
28
1
31
338
25

Highest AQI recorded in

April

42AQI


Lowest AQI recorded in

August

27AQI


202236AQI

29
2
20
1
26
5
27
3
24
7
26
4
21
3
2
1
28
1
27
4
29
1
31
290
32

Highest AQI recorded in

May

44AQI


Lowest AQI recorded in

December

31AQI


202133AQI

31
28
27
2
21
25
6
23
7
27
4
31
24
6
30
1
29
1
31
327
27

Highest AQI recorded in

May

41AQI


Lowest AQI recorded in

January

29AQI


202035AQI

11
2
19
2
14
4
22
8
29
2
17
14
19
28
3
30
29
2
218
37

Highest AQI recorded in

August

49AQI


Lowest AQI recorded in

December

29AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
43AQI
Least Polluted Year Recorded
2021(Avg.)
33AQI


Miemachi Ichiba's annual 2025 AQI (43) shows an average percentage change of 22.6% (worsened AQI) compared to previous years: 2020 (35), 2021 (33), 2022 (36), 2023 (35), 2024 (34).