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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Shiromachi, Tsukawaki, 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+

August Air Quality Analysis

Shiromachi, Tsukawaki, Oita, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
15th Aug 2026
64AQI
Lowest AQI recorded on
3rd Aug 2023
16AQI

Same Day Analysis (18th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 26 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 17th Aug - 18th Aug 2026

Shiromachi, Tsukawaki, Oita, Japan

AQI
Day
Night
.

5 AM17th Aug 2026

7 PM

4 AM18th Aug 2026

Day time
Avg. Highest Time
6AM17th Aug

38AQI

Avg. Lowest Time
4PM17th Aug

14AQI

Night time
Avg. Highest Time
8PM17th Aug

29AQI

Avg. Lowest Time
4AM18th Aug

25AQI

In the last 24 hours,

Shiromachi's AQI reached its highest point of 38 at 6 AM during the Day, while the lowest point, 14, was recorded at 4 PM during the Day between 17th Aug and 18th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Shiromachi, Tsukawaki, Oita, Japan

JulAug
20th - 21st21st - 22nd22nd - 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
Day
Night
20th Jul 2026275 AMAQI
20th Jul 2026256 AMAQI
20th Jul 2026297 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026319 AMAQI
20th Jul 20263210 AMAQI
20th Jul 20263311 AMAQI
20th Jul 20264412 PMAQI
20th Jul 2026601 PMAQI
20th Jul 2026582 PMAQI
20th Jul 2026553 PMAQI
20th Jul 2026554 PMAQI
20th Jul 2026535 PMAQI
20th Jul 2026556 PMAQI
20th Jul 2026577 PMAQI
20th Jul 2026538 PMAQI
20th Jul 2026549 PMAQI
20th Jul 20264810 PMAQI
20th Jul 20264411 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026481 AMAQI
21st Jul 2026402 AMAQI
21st Jul 2026423 AMAQI
21st Jul 2026444 AMAQI

28°C24/34°C

21st Jul 2026465 AMAQI
21st Jul 2026446 AMAQI
21st Jul 2026467 AMAQI
21st Jul 2026468 AMAQI
21st Jul 2026519 AMAQI
21st Jul 20265210 AMAQI
21st Jul 20265011 AMAQI
21st Jul 2026531 PMAQI
21st Jul 2026522 PMAQI
21st Jul 2026643 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026695 PMAQI
21st Jul 2026756 PMAQI
21st Jul 20261027 PMAQI
21st Jul 2026798 PMAQI
21st Jul 2026719 PMAQI
21st Jul 20267610 PMAQI
21st Jul 20267411 PMAQI
22nd Jul 20266612 AMAQI
22nd Jul 2026591 AMAQI
22nd Jul 2026602 AMAQI
22nd Jul 2026593 AMAQI
22nd Jul 2026594 AMAQI

29°C24/35°C

22nd Jul 2026365 AMAQI
22nd Jul 2026296 AMAQI
22nd Jul 2026317 AMAQI
22nd Jul 2026428 AMAQI
22nd Jul 2026409 AMAQI
22nd Jul 20263810 AMAQI
22nd Jul 20262911 AMAQI
22nd Jul 20262912 PMAQI
22nd Jul 2026331 PMAQI
22nd Jul 2026292 PMAQI
22nd Jul 2026463 PMAQI
22nd Jul 2026544 PMAQI
22nd Jul 2026595 PMAQI
22nd Jul 2026526 PMAQI
22nd Jul 2026537 PMAQI
22nd Jul 2026578 PMAQI
22nd Jul 2026589 PMAQI
22nd Jul 20263610 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20262712 AMAQI
23rd Jul 2026311 AMAQI
23rd Jul 2026362 AMAQI
23rd Jul 2026313 AMAQI
23rd Jul 2026334 AMAQI

29°C23/36°C

23rd Jul 2026365 AMAQI
23rd Jul 2026296 AMAQI
23rd Jul 2026337 AMAQI
23rd Jul 2026298 AMAQI
23rd Jul 2026369 AMAQI
23rd Jul 20264010 AMAQI
23rd Jul 20264811 AMAQI
23rd Jul 20265312 PMAQI
23rd Jul 2026521 PMAQI
23rd Jul 2026442 PMAQI
23rd Jul 2026513 PMAQI
23rd Jul 2026484 PMAQI
23rd Jul 2026385 PMAQI
23rd Jul 2026406 PMAQI
23rd Jul 2026407 PMAQI
23rd Jul 2026408 PMAQI
23rd Jul 2026389 PMAQI
23rd Jul 20263310 PMAQI
23rd Jul 20263311 PMAQI
24th Jul 20263112 AMAQI
24th Jul 2026361 AMAQI
24th Jul 2026292 AMAQI
24th Jul 2026333 AMAQI
24th Jul 2026314 AMAQI

28°C24/35°C

24th Jul 2026295 AMAQI
24th Jul 2026316 AMAQI
24th Jul 2026297 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026369 AMAQI
24th Jul 20263610 AMAQI
24th Jul 20263611 AMAQI
24th Jul 20264812 PMAQI
24th Jul 2026551 PMAQI
24th Jul 2026572 PMAQI
24th Jul 2026593 PMAQI
24th Jul 2026604 PMAQI
24th Jul 2026645 PMAQI
24th Jul 2026626 PMAQI
24th Jul 2026597 PMAQI
24th Jul 2026588 PMAQI
24th Jul 2026549 PMAQI
24th Jul 20265310 PMAQI
24th Jul 20265411 PMAQI
25th Jul 20265312 AMAQI
25th Jul 2026521 AMAQI
25th Jul 2026522 AMAQI
25th Jul 2026483 AMAQI
25th Jul 2026514 AMAQI

28°C23/35°C

25th Jul 2026485 AMAQI
25th Jul 2026486 AMAQI
25th Jul 2026467 AMAQI
25th Jul 2026488 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20264410 AMAQI
25th Jul 20265011 AMAQI
25th Jul 20265512 PMAQI
25th Jul 2026531 PMAQI
25th Jul 2026552 PMAQI
25th Jul 2026443 PMAQI
25th Jul 2026384 PMAQI
25th Jul 2026335 PMAQI
25th Jul 2026316 PMAQI
25th Jul 2026337 PMAQI
25th Jul 2026338 PMAQI
25th Jul 2026369 PMAQI
25th Jul 20263110 PMAQI
25th Jul 20262911 PMAQI
26th Jul 20262712 AMAQI
26th Jul 2026251 AMAQI
26th Jul 2026252 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026254 AMAQI

28°C23/36°C

26th Jul 2026255 AMAQI
26th Jul 2026256 AMAQI
26th Jul 2026237 AMAQI
26th Jul 2026238 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026213 PMAQI
26th Jul 2026274 PMAQI
26th Jul 2026295 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026279 PMAQI
26th Jul 20263110 PMAQI
26th Jul 20263811 PMAQI
27th Jul 20263312 AMAQI
27th Jul 2026381 AMAQI
27th Jul 2026402 AMAQI
27th Jul 2026423 AMAQI
27th Jul 2026364 AMAQI

28°C23/35°C

27th Jul 2026365 AMAQI
27th Jul 2026336 AMAQI
27th Jul 2026387 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026389 AMAQI
27th Jul 20264210 AMAQI
27th Jul 20264211 AMAQI
27th Jul 20264612 PMAQI
27th Jul 2026481 PMAQI
27th Jul 2026442 PMAQI
27th Jul 2026483 PMAQI
27th Jul 2026424 PMAQI
27th Jul 2026425 PMAQI
27th Jul 2026446 PMAQI
27th Jul 2026387 PMAQI
27th Jul 2026338 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20263610 PMAQI
27th Jul 20263611 PMAQI
28th Jul 20263312 AMAQI
28th Jul 2026331 AMAQI
28th Jul 2026292 AMAQI
28th Jul 2026313 AMAQI
28th Jul 2026294 AMAQI

29°C24/37°C

28th Jul 2026295 AMAQI
28th Jul 2026276 AMAQI
28th Jul 2026257 AMAQI
28th Jul 2026258 AMAQI
28th Jul 2026279 AMAQI
28th Jul 20262910 AMAQI
28th Jul 20263111 AMAQI
28th Jul 20262912 PMAQI
28th Jul 2026271 PMAQI
28th Jul 2026292 PMAQI
28th Jul 2026273 PMAQI
28th Jul 2026254 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026316 PMAQI
28th Jul 2026337 PMAQI
28th Jul 2026298 PMAQI
28th Jul 2026299 PMAQI
28th Jul 20262910 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026232 AMAQI
29th Jul 2026233 AMAQI
29th Jul 2026254 AMAQI

29°C23/37°C

29th Jul 2026215 AMAQI
29th Jul 2026256 AMAQI
29th Jul 2026257 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262111 AMAQI
29th Jul 20262112 PMAQI
29th Jul 2026211 PMAQI
29th Jul 2026292 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026217 PMAQI
29th Jul 2026218 PMAQI
29th Jul 2026219 PMAQI
29th Jul 20262110 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20262112 AMAQI
30th Jul 2026211 AMAQI
30th Jul 2026212 AMAQI
30th Jul 2026213 AMAQI
30th Jul 2026214 AMAQI

26°C23/29°C

30th Jul 2026215 AMAQI
30th Jul 2026216 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20262112 PMAQI
30th Jul 2026211 PMAQI
30th Jul 2026212 PMAQI
30th Jul 2026213 PMAQI
30th Jul 2026214 PMAQI
30th Jul 2026215 PMAQI
30th Jul 2026216 PMAQI
30th Jul 2026257 PMAQI
30th Jul 2026258 PMAQI
30th Jul 2026259 PMAQI
30th Jul 20262510 PMAQI
30th Jul 20262511 PMAQI
31st Jul 20262512 AMAQI
31st Jul 2026251 AMAQI
31st Jul 2026252 AMAQI
31st Jul 2026273 AMAQI
31st Jul 2026254 AMAQI

28°C24/36°C

31st Jul 2026255 AMAQI
31st Jul 2026256 AMAQI
31st Jul 2026257 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026239 AMAQI
31st Jul 20262510 AMAQI
31st Jul 20262711 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026252 PMAQI
31st Jul 2026253 PMAQI
31st Jul 2026254 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026256 PMAQI
31st Jul 2026257 PMAQI
31st Jul 2026258 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20262511 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026271 AMAQI
1st Aug 2026232 AMAQI
1st Aug 2026253 AMAQI
1st Aug 2026254 AMAQI

28°C22/36°C

1st Aug 2026255 AMAQI
1st Aug 2026256 AMAQI
1st Aug 2026257 AMAQI
1st Aug 2026278 AMAQI
1st Aug 2026259 AMAQI
1st Aug 20262910 AMAQI
1st Aug 20262911 AMAQI
1st Aug 20262912 PMAQI
1st Aug 2026331 PMAQI
1st Aug 2026332 PMAQI
1st Aug 2026313 PMAQI
1st Aug 2026334 PMAQI
1st Aug 2026385 PMAQI
1st Aug 2026336 PMAQI
1st Aug 2026387 PMAQI
1st Aug 2026428 PMAQI
1st Aug 2026449 PMAQI
1st Aug 20264410 PMAQI
1st Aug 20264611 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026461 AMAQI
2nd Aug 2026462 AMAQI
2nd Aug 2026483 AMAQI
2nd Aug 2026514 AMAQI

29°C23/38°C

2nd Aug 2026485 AMAQI
2nd Aug 2026516 AMAQI
2nd Aug 2026517 AMAQI
2nd Aug 2026508 AMAQI
2nd Aug 2026569 AMAQI
2nd Aug 20265210 AMAQI
2nd Aug 20266211 AMAQI
2nd Aug 20265812 PMAQI
2nd Aug 2026621 PMAQI
2nd Aug 2026522 PMAQI
2nd Aug 2026553 PMAQI
2nd Aug 2026584 PMAQI
2nd Aug 2026575 PMAQI
2nd Aug 2026536 PMAQI
2nd Aug 2026497 PMAQI
2nd Aug 2026508 PMAQI
2nd Aug 2026519 PMAQI
2nd Aug 20265010 PMAQI
2nd Aug 20265011 PMAQI
3rd Aug 20264812 AMAQI
3rd Aug 2026511 AMAQI
3rd Aug 2026572 AMAQI
3rd Aug 2026563 AMAQI
3rd Aug 2026584 AMAQI

30°C24/38°C

3rd Aug 2026595 AMAQI
3rd Aug 2026506 AMAQI
3rd Aug 2026527 AMAQI
3rd Aug 2026538 AMAQI
3rd Aug 2026529 AMAQI
3rd Aug 20265410 AMAQI
3rd Aug 20265211 AMAQI
3rd Aug 20265512 PMAQI
3rd Aug 2026571 PMAQI
3rd Aug 2026572 PMAQI
3rd Aug 2026573 PMAQI
3rd Aug 2026584 PMAQI
3rd Aug 2026595 PMAQI
3rd Aug 2026596 PMAQI
3rd Aug 2026577 PMAQI
3rd Aug 2026588 PMAQI
3rd Aug 2026559 PMAQI
3rd Aug 20265610 PMAQI
3rd Aug 20265511 PMAQI
4th Aug 20265312 AMAQI
4th Aug 2026541 AMAQI
4th Aug 2026542 AMAQI
4th Aug 2026523 AMAQI
4th Aug 2026554 AMAQI

30°C24/37°C

4th Aug 2026545 AMAQI
4th Aug 2026546 AMAQI
4th Aug 2026557 AMAQI
4th Aug 2026568 AMAQI
4th Aug 2026559 AMAQI
4th Aug 20265310 AMAQI
4th Aug 20265311 AMAQI
4th Aug 20265312 PMAQI
4th Aug 2026541 PMAQI
4th Aug 2026562 PMAQI
4th Aug 2026623 PMAQI
4th Aug 2026574 PMAQI
4th Aug 2026535 PMAQI
4th Aug 2026516 PMAQI
4th Aug 2026517 PMAQI
4th Aug 2026508 PMAQI
4th Aug 2026549 PMAQI
4th Aug 20265410 PMAQI
4th Aug 20265011 PMAQI
5th Aug 20265012 AMAQI
5th Aug 2026521 AMAQI
5th Aug 2026462 AMAQI
5th Aug 2026403 AMAQI
5th Aug 2026404 AMAQI

29°C24/36°C

5th Aug 2026405 AMAQI
5th Aug 2026366 AMAQI
5th Aug 2026337 AMAQI
5th Aug 2026368 AMAQI
5th Aug 2026339 AMAQI
5th Aug 20263110 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026331 PMAQI
5th Aug 2026332 PMAQI
5th Aug 2026313 PMAQI
5th Aug 2026314 PMAQI
5th Aug 2026275 PMAQI
5th Aug 2026316 PMAQI
5th Aug 2026297 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026299 PMAQI
5th Aug 20263610 PMAQI
5th Aug 20263111 PMAQI
6th Aug 20263112 AMAQI
6th Aug 2026331 AMAQI
6th Aug 2026332 AMAQI
6th Aug 2026383 AMAQI
6th Aug 2026364 AMAQI

29°C24/35°C

6th Aug 2026325 AMAQI
6th Aug 2026276 AMAQI
6th Aug 2026257 AMAQI
6th Aug 2026238 AMAQI
6th Aug 2026239 AMAQI
6th Aug 20262110 AMAQI
6th Aug 20262311 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026251 PMAQI
6th Aug 2026332 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026254 PMAQI
6th Aug 2026275 PMAQI
6th Aug 2026256 PMAQI
6th Aug 2026237 PMAQI
6th Aug 2026258 PMAQI
6th Aug 2026259 PMAQI
6th Aug 20262710 PMAQI
6th Aug 20262511 PMAQI
7th Aug 20262512 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026232 AMAQI
7th Aug 2026213 AMAQI
7th Aug 2026214 AMAQI

28°C23/35°C

7th Aug 2026235 AMAQI
7th Aug 2026236 AMAQI
7th Aug 2026237 AMAQI
7th Aug 2026258 AMAQI
7th Aug 2026239 AMAQI
7th Aug 20262310 AMAQI
7th Aug 20262311 AMAQI
7th Aug 20262312 PMAQI
7th Aug 2026301 PMAQI
7th Aug 2026402 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026254 PMAQI
7th Aug 2026235 PMAQI
7th Aug 2026236 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026258 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20262511 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026213 AMAQI
8th Aug 2026234 AMAQI

28°C26/33°C

8th Aug 2026255 AMAQI
8th Aug 2026216 AMAQI
8th Aug 2026237 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026239 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20262111 AMAQI
8th Aug 20262112 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026212 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026235 PMAQI
8th Aug 2026236 PMAQI
8th Aug 2026237 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026239 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262112 AMAQI
9th Aug 2026211 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026213 AMAQI
9th Aug 2026214 AMAQI

28°C23/34°C

9th Aug 2026215 AMAQI
9th Aug 2026216 AMAQI
9th Aug 2026217 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026239 AMAQI
9th Aug 20262110 AMAQI
9th Aug 20262111 AMAQI
9th Aug 20262112 PMAQI
9th Aug 2026231 PMAQI
9th Aug 2026252 PMAQI
9th Aug 2026253 PMAQI
9th Aug 2026254 PMAQI
9th Aug 2026215 PMAQI
9th Aug 2026256 PMAQI
9th Aug 2026217 PMAQI
9th Aug 2026258 PMAQI
9th Aug 2026259 PMAQI
9th Aug 20262110 PMAQI
9th Aug 20262111 PMAQI
10th Aug 20262512 AMAQI
10th Aug 2026251 AMAQI
10th Aug 2026252 AMAQI
10th Aug 2026213 AMAQI
10th Aug 2026214 AMAQI

27°C22/34°C

10th Aug 2026255 AMAQI
10th Aug 2026216 AMAQI
10th Aug 2026217 AMAQI
10th Aug 2026258 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262510 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20262512 PMAQI
10th Aug 2026271 PMAQI
10th Aug 2026272 PMAQI
10th Aug 2026213 PMAQI
10th Aug 2026214 PMAQI
10th Aug 2026215 PMAQI
10th Aug 2026256 PMAQI
10th Aug 2026257 PMAQI
10th Aug 2026258 PMAQI
10th Aug 2026279 PMAQI
10th Aug 20262910 PMAQI
10th Aug 20263311 PMAQI
11th Aug 20262912 AMAQI
11th Aug 2026291 AMAQI
11th Aug 2026272 AMAQI
11th Aug 2026333 AMAQI
11th Aug 2026314 AMAQI

27°C23/33°C

11th Aug 2026275 AMAQI
11th Aug 2026276 AMAQI
11th Aug 2026277 AMAQI
11th Aug 2026278 AMAQI
11th Aug 2026299 AMAQI
11th Aug 20262910 AMAQI
11th Aug 20262911 AMAQI
11th Aug 20262912 PMAQI
11th Aug 2026291 PMAQI
11th Aug 2026292 PMAQI
11th Aug 2026313 PMAQI
11th Aug 2026314 PMAQI
11th Aug 2026315 PMAQI
11th Aug 2026316 PMAQI
11th Aug 2026277 PMAQI
11th Aug 2026298 PMAQI
11th Aug 2026299 PMAQI
11th Aug 20262910 PMAQI
11th Aug 20262711 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026231 AMAQI
12th Aug 2026252 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026214 AMAQI

26°C19/33°C

12th Aug 2026255 AMAQI
12th Aug 2026256 AMAQI
12th Aug 2026257 AMAQI
12th Aug 2026238 AMAQI
12th Aug 2026239 AMAQI
12th Aug 20262310 AMAQI
12th Aug 20262511 AMAQI
12th Aug 20262912 PMAQI
12th Aug 2026231 PMAQI
12th Aug 2026232 PMAQI
12th Aug 2026213 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026215 PMAQI
12th Aug 2026216 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026238 PMAQI
12th Aug 2026219 PMAQI
12th Aug 20262110 PMAQI
12th Aug 20262311 PMAQI
13th Aug 20262312 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026253 AMAQI
13th Aug 2026254 AMAQI

24°C18/30°C

13th Aug 2026255 AMAQI
13th Aug 2026256 AMAQI
13th Aug 2026257 AMAQI
13th Aug 2026258 AMAQI
13th Aug 2026259 AMAQI
13th Aug 20262710 AMAQI
13th Aug 20262911 AMAQI
13th Aug 20263312 PMAQI
13th Aug 2026361 PMAQI
13th Aug 2026442 PMAQI
13th Aug 2026483 PMAQI
13th Aug 2026494 PMAQI
13th Aug 2026515 PMAQI
13th Aug 2026646 PMAQI
13th Aug 2026677 PMAQI
13th Aug 2026678 PMAQI
13th Aug 2026729 PMAQI
13th Aug 20266910 PMAQI
13th Aug 20266911 PMAQI
14th Aug 20266512 AMAQI
14th Aug 2026531 AMAQI
14th Aug 2026602 AMAQI
14th Aug 2026673 AMAQI
14th Aug 2026684 AMAQI

25°C21/30°C

14th Aug 2026645 AMAQI
14th Aug 2026606 AMAQI
14th Aug 2026637 AMAQI
14th Aug 2026568 AMAQI
14th Aug 2026569 AMAQI
14th Aug 20264810 AMAQI
14th Aug 20264011 AMAQI
14th Aug 20263612 PMAQI
14th Aug 2026291 PMAQI
14th Aug 2026502 PMAQI
14th Aug 2026563 PMAQI
14th Aug 2026644 PMAQI
14th Aug 2026695 PMAQI
14th Aug 2026806 PMAQI
14th Aug 2026747 PMAQI
14th Aug 2026768 PMAQI
14th Aug 2026749 PMAQI
14th Aug 20267610 PMAQI
14th Aug 20267411 PMAQI
15th Aug 20266912 AMAQI
15th Aug 2026741 AMAQI
15th Aug 2026732 AMAQI
15th Aug 2026733 AMAQI
15th Aug 2026814 AMAQI

25°C21/31°C

15th Aug 2026765 AMAQI
15th Aug 2026766 AMAQI
15th Aug 2026667 AMAQI
15th Aug 2026578 AMAQI
15th Aug 2026519 AMAQI
15th Aug 20265210 AMAQI
15th Aug 20264411 AMAQI
15th Aug 20265212 PMAQI
15th Aug 2026531 PMAQI
15th Aug 2026592 PMAQI
15th Aug 2026693 PMAQI
15th Aug 2026744 PMAQI
15th Aug 2026835 PMAQI
15th Aug 2026806 PMAQI
15th Aug 2026597 PMAQI
15th Aug 2026578 PMAQI
15th Aug 2026539 PMAQI
15th Aug 20265210 PMAQI
15th Aug 20265111 PMAQI
16th Aug 20265012 AMAQI
16th Aug 2026441 AMAQI
16th Aug 2026462 AMAQI
16th Aug 2026483 AMAQI
16th Aug 2026384 AMAQI

25°C21/32°C

16th Aug 2026275 AMAQI
16th Aug 2026276 AMAQI
16th Aug 2026237 AMAQI
16th Aug 2026238 AMAQI
16th Aug 2026219 AMAQI
16th Aug 20261910 AMAQI
16th Aug 20262711 AMAQI
16th Aug 20263112 PMAQI
16th Aug 2026311 PMAQI
16th Aug 2026302 PMAQI
16th Aug 2026363 PMAQI
16th Aug 2026294 PMAQI
16th Aug 2026315 PMAQI
16th Aug 2026336 PMAQI
16th Aug 2026467 PMAQI
16th Aug 2026388 PMAQI
16th Aug 2026449 PMAQI
16th Aug 20264610 PMAQI
16th Aug 20264211 PMAQI
17th Aug 20263312 AMAQI
17th Aug 2026311 AMAQI
17th Aug 2026332 AMAQI
17th Aug 2026363 AMAQI
17th Aug 2026444 AMAQI

23°C21/26°C

17th Aug 2026295 AMAQI
17th Aug 2026386 AMAQI
17th Aug 2026337 AMAQI
17th Aug 2026298 AMAQI
17th Aug 2026299 AMAQI
17th Aug 20263110 AMAQI
17th Aug 20262311 AMAQI
17th Aug 20262712 PMAQI
17th Aug 2026251 PMAQI
17th Aug 2026192 PMAQI
17th Aug 2026213 PMAQI
17th Aug 2026144 PMAQI
17th Aug 2026295 PMAQI
17th Aug 2026316 PMAQI
17th Aug 2026297 PMAQI
17th Aug 2026298 PMAQI
17th Aug 2026299 PMAQI
17th Aug 20262510 PMAQI
17th Aug 20262911 PMAQI
18th Aug 20262712 AMAQI
18th Aug 2026251 AMAQI
18th Aug 2026272 AMAQI
18th Aug 2026273 AMAQI
18th Aug 2026254 AMAQI

14°C14/15°C

18th Aug 2026255 AMAQI
5 AM
18th Aug 2026256 AMAQI
18th Aug 2026257 AMAQI
18th Aug 2026218 AMAQI
18th Aug 2026259 AMAQI
18th Aug 20262510 AMAQI
18th Aug 20262711 AMAQI
18th Aug 20262512 PMAQI
12 PM
18th Aug 2026251 PMAQI
18th Aug 2026212 PMAQI
18th Aug 2026253 PMAQI
18th Aug 2026274 PMAQI
18th Aug 2026215 PMAQI
18th Aug 2026236 PMAQI
18th Aug 2026297 PMAQI
7 PM
18th Aug 2026298 PMAQI
18th Aug 2026319 PMAQI
18th Aug 20262710 PMAQI
18th Aug 20262511 PMAQI
12 AM
4 AM

28°C24/35°C

Day time
Avg. Highest Time
1 PM - 7 PM

38AQI

7 hours / Day
210 hours / Month
Avg. Lowest Time
8 AM

32AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 7 PM (Avg. 38), while the lowest AQI was between 8 AM to 8 AM (Avg. 32).
Night time
Avg. Highest Time
8 PM - 11 PM

39AQI

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

36AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 39), while the lowest AQI was between 12 AM to 4 AM (Avg. 36).

2026 Days Vs Air Quality

Shiromachi, Tsukawaki, Oita, Japan

2026

69%

159

31%

71

Total number of days with different AQI categories in last 230 days in 2026 (135 days remaining)

Good
159 Days
Moderate
71 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 69%

Health Risk Level:

Moderate

In 2026, 69% of 230 days were within WHO’s safe air quality limits, and 31% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Shiromachi, Tsukawaki, Oita, 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
35AQI (US)
2nd January 2026
34AQI (US)
3rd January 2026
41AQI (US)
4th January 2026
45AQI (US)
5th January 2026
53AQI (US)
6th January 2026
44AQI (US)
7th January 2026
62AQI (US)
8th January 2026
44AQI (US)
9th January 2026
19AQI (US)
10th January 2026
63AQI (US)
11th January 2026
36AQI (US)
12th January 2026
45AQI (US)
13th January 2026
52AQI (US)
14th January 2026
51AQI (US)
15th January 2026
72AQI (US)
16th January 2026
72AQI (US)
17th January 2026
74AQI (US)
18th January 2026
76AQI (US)
19th January 2026
73AQI (US)
20th January 2026
46AQI (US)
21st January 2026
35AQI (US)
22nd January 2026
28AQI (US)
23rd January 2026
48AQI (US)
24th January 2026
60AQI (US)
25th January 2026
34AQI (US)
26th January 2026
27AQI (US)
27th January 2026
57AQI (US)
28th January 2026
45AQI (US)
29th January 2026
64AQI (US)
30th January 2026
55AQI (US)
31st January 2026
51AQI (US)
1st February 2026
60AQI (US)
2nd February 2026
54AQI (US)
3rd February 2026
46AQI (US)
4th February 2026
43AQI (US)
5th February 2026
51AQI (US)
6th February 2026
65AQI (US)
7th February 2026
49AQI (US)
8th February 2026
22AQI (US)
9th February 2026
44AQI (US)
10th February 2026
58AQI (US)
11th February 2026
47AQI (US)
12th February 2026
59AQI (US)
13th February 2026
65AQI (US)
14th February 2026
71AQI (US)
15th February 2026
68AQI (US)
16th February 2026
63AQI (US)
17th February 2026
31AQI (US)
18th February 2026
46AQI (US)
19th February 2026
73AQI (US)
20th February 2026
70AQI (US)
21st February 2026
68AQI (US)
22nd February 2026
54AQI (US)
23rd February 2026
44AQI (US)
24th February 2026
44AQI (US)
25th February 2026
26AQI (US)
26th February 2026
14AQI (US)
27th February 2026
45AQI (US)
28th February 2026
51AQI (US)
1st March 2026
49AQI (US)
2nd March 2026
29AQI (US)
3rd March 2026
16AQI (US)
4th March 2026
59AQI (US)
5th March 2026
56AQI (US)
6th March 2026
50AQI (US)
7th March 2026
48AQI (US)
8th March 2026
51AQI (US)
9th March 2026
55AQI (US)
10th March 2026
60AQI (US)
11th March 2026
53AQI (US)
12th March 2026
39AQI (US)
13th March 2026
38AQI (US)
14th March 2026
26AQI (US)
15th March 2026
49AQI (US)
16th March 2026
65AQI (US)
17th March 2026
50AQI (US)
18th March 2026
62AQI (US)
19th March 2026
34AQI (US)
20th March 2026
62AQI (US)
21st March 2026
50AQI (US)
22nd March 2026
58AQI (US)
23rd March 2026
22AQI (US)
24th March 2026
58AQI (US)
25th March 2026
38AQI (US)
26th March 2026
39AQI (US)
27th March 2026
61AQI (US)
28th March 2026
92AQI (US)
29th March 2026
80AQI (US)
30th March 2026
59AQI (US)
31st March 2026
18AQI (US)
1st April 2026
24AQI (US)
2nd April 2026
56AQI (US)
3rd April 2026
52AQI (US)
4th April 2026
27AQI (US)
5th April 2026
34AQI (US)
6th April 2026
65AQI (US)
7th April 2026
41AQI (US)
8th April 2026
36AQI (US)
9th April 2026
43AQI (US)
10th April 2026
19AQI (US)
11th April 2026
34AQI (US)
12th April 2026
45AQI (US)
13th April 2026
40AQI (US)
14th April 2026
32AQI (US)
15th April 2026
41AQI (US)
16th April 2026
39AQI (US)
17th April 2026
45AQI (US)
18th April 2026
25AQI (US)
19th April 2026
28AQI (US)
20th April 2026
39AQI (US)
21st April 2026
43AQI (US)
22nd April 2026
57AQI (US)
23rd April 2026
13AQI (US)
24th April 2026
25AQI (US)
25th April 2026
46AQI (US)
26th April 2026
48AQI (US)
27th April 2026
44AQI (US)
28th April 2026
52AQI (US)
29th April 2026
40AQI (US)
30th April 2026
34AQI (US)
1st May 2026
44AQI (US)
2nd May 2026
63AQI (US)
3rd May 2026
39AQI (US)
4th May 2026
28AQI (US)
5th May 2026
34AQI (US)
6th May 2026
38AQI (US)
7th May 2026
38AQI (US)
8th May 2026
30AQI (US)
9th May 2026
30AQI (US)
10th May 2026
55AQI (US)
11th May 2026
57AQI (US)
12th May 2026
29AQI (US)
13th May 2026
36AQI (US)
14th May 2026
39AQI (US)
15th May 2026
41AQI (US)
16th May 2026
76AQI (US)
17th May 2026
63AQI (US)
18th May 2026
53AQI (US)
19th May 2026
46AQI (US)
20th May 2026
60AQI (US)
21st May 2026
66AQI (US)
22nd May 2026
69AQI (US)
23rd May 2026
62AQI (US)
24th May 2026
63AQI (US)
25th May 2026
55AQI (US)
26th May 2026
41AQI (US)
27th May 2026
23AQI (US)
28th May 2026
25AQI (US)
29th May 2026
26AQI (US)
30th May 2026
28AQI (US)
31st May 2026
61AQI (US)
1st June 2026
51AQI (US)
2nd June 2026
12AQI (US)
3rd June 2026
15AQI (US)
4th June 2026
25AQI (US)
5th June 2026
22AQI (US)
6th June 2026
28AQI (US)
7th June 2026
9AQI (US)
8th June 2026
18AQI (US)
9th June 2026
24AQI (US)
10th June 2026
23AQI (US)
11th June 2026
27AQI (US)
12th June 2026
27AQI (US)
13th June 2026
36AQI (US)
14th June 2026
44AQI (US)
15th June 2026
24AQI (US)
16th June 2026
25AQI (US)
17th June 2026
23AQI (US)
18th June 2026
26AQI (US)
19th June 2026
29AQI (US)
20th June 2026
16AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
20AQI (US)
25th June 2026
26AQI (US)
26th June 2026
28AQI (US)
27th June 2026
27AQI (US)
28th June 2026
29AQI (US)
29th June 2026
36AQI (US)
30th June 2026
57AQI (US)
1st July 2026
24AQI (US)
2nd July 2026
14AQI (US)
3rd July 2026
25AQI (US)
4th July 2026
25AQI (US)
5th July 2026
22AQI (US)
6th July 2026
21AQI (US)
7th July 2026
26AQI (US)
8th July 2026
26AQI (US)
9th July 2026
25AQI (US)
10th July 2026
33AQI (US)
11th July 2026
27AQI (US)
12th July 2026
29AQI (US)
13th July 2026
37AQI (US)
14th July 2026
27AQI (US)
15th July 2026
25AQI (US)
16th July 2026
26AQI (US)
17th July 2026
31AQI (US)
18th July 2026
49AQI (US)
19th July 2026
34AQI (US)
20th July 2026
41AQI (US)
21st July 2026
58AQI (US)
22nd July 2026
45AQI (US)
23rd July 2026
38AQI (US)
24th July 2026
45AQI (US)
25th July 2026
44AQI (US)
26th July 2026
26AQI (US)
27th July 2026
39AQI (US)
28th July 2026
29AQI (US)
29th July 2026
22AQI (US)
30th July 2026
22AQI (US)
31st July 2026
25AQI (US)
1st August 2026
31AQI (US)
2nd August 2026
52AQI (US)
3rd August 2026
55AQI (US)
4th August 2026
54AQI (US)
5th August 2026
35AQI (US)
6th August 2026
27AQI (US)
7th August 2026
24AQI (US)
8th August 2026
22AQI (US)
9th August 2026
22AQI (US)
10th August 2026
25AQI (US)
11th August 2026
29AQI (US)
12th August 2026
23AQI (US)
13th August 2026
41AQI (US)
14th August 2026
61AQI (US)
15th August 2026
64AQI (US)
16th August 2026
35AQI (US)
17th August 2026
29AQI (US)
18th August 2026
26AQI (US)
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
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

50AQI (US)

51AQI (US)

49AQI (US)

39AQI (US)

46AQI (US)

26AQI (US)

31AQI (US)

36AQI (US)

No. of days

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

202641AQI (US)

16
15
13
15
16
15
25
5
18
13
28
2
30
1
13
5
159
71

Highest AQI (US) recorded in

February

51AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202549AQI (US)

16
15
24
4
15
16
21
9
24
7
25
5
19
12
31
30
4
27
1
29
6
25
216
149

Highest AQI (US) recorded in

November

66AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202443AQI (US)

29
2
24
5
24
7
15
15
16
15
19
11
30
1
24
6
22
8
29
2
21
9
29
2
282
83

Highest AQI (US) recorded in

April

53AQI (US)

Lowest AQI (US) recorded in

July

37AQI (US)

202344AQI (US)

22
7
1
19
9
15
16
12
18
17
14
19
11
26
4
31
29
1
23
8
21
8
26
5
260
101
1

Highest AQI (US) recorded in

April

53AQI (US)

Lowest AQI (US) recorded in

August

32AQI (US)

202248AQI (US)

15
15
16
5
17
14
18
12
11
20
22
8
20
3
1
26
2
18
13
21
9
21
10
205
112

Highest AQI (US) recorded in

May

57AQI (US)

Lowest AQI (US) recorded in

September

39AQI (US)

202146AQI (US)

14
16
13
15
14
15
16
5
18
13
16
14
28
3
29
2
25
5
20
11
19
11
19
12
231
122

Highest AQI (US) recorded in

February

54AQI (US)

Lowest AQI (US) recorded in

August

32AQI (US)

202049AQI (US)

3
9
1
3
18
8
10
16
14
30
1
17
10
3
15
4
20
11
18
12
16
15
146
104
4

Highest AQI (US) recorded in

March

68AQI (US)

Lowest AQI (US) recorded in

July

32AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
49AQI (US)
Least Polluted Year Recorded
2026(Avg.)
41AQI (US)

Shiromachi's annual 2026 AQI (US) (41) shows an average percentage change of -11.5% (improved AQI (US)) compared to previous years: 2020 (49), 2021 (46), 2022 (48), 2023 (44), 2024 (43), 2025 (49).