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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Muikamachi, Tokamachi, Niigata, 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

Muikamachi, Tokamachi, Niigata, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
26th Aug 2025
55AQI
Lowest AQI recorded on
9th Aug 2023
16AQI

Same Day Analysis (18th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 25 of Good air quality, showing improvement over 2025 and 2023 on the same day.

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

Muikamachi, Tokamachi, Niigata, Japan

AQI
Day
Night
.

4 AM17th Aug 2026

6 PM

3 AM18th Aug 2026

Day time
Avg. Highest Time
5AM17th Aug

33AQI

Avg. Lowest Time
2PM17th Aug

25AQI

Night time
Avg. Highest Time
4AM17th Aug

33AQI

Avg. Lowest Time
3AM18th Aug

25AQI

In the last 24 hours,

Muikamachi's AQI reached its highest point of 33 at 4 AM during the Night, while the lowest point, 25, was recorded at 3 AM during the Night between 17th Aug and 18th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Muikamachi, Tokamachi, Niigata, 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 2026364 AMAQI
20th Jul 2026365 AMAQI
20th Jul 2026386 AMAQI
20th Jul 2026427 AMAQI
20th Jul 2026408 AMAQI
20th Jul 2026449 AMAQI
20th Jul 20264810 AMAQI
20th Jul 20264411 AMAQI
20th Jul 20264612 PMAQI
20th Jul 2026501 PMAQI
20th Jul 2026512 PMAQI
20th Jul 2026503 PMAQI
20th Jul 2026484 PMAQI
20th Jul 2026515 PMAQI
20th Jul 2026506 PMAQI
20th Jul 2026497 PMAQI
20th Jul 2026468 PMAQI
20th Jul 2026509 PMAQI
20th Jul 20265110 PMAQI
20th Jul 20265111 PMAQI
21st Jul 20264812 AMAQI
21st Jul 2026461 AMAQI
21st Jul 2026462 AMAQI
21st Jul 2026493 AMAQI

26°C21/32°C

21st Jul 2026504 AMAQI
21st Jul 2026495 AMAQI
21st Jul 2026486 AMAQI
21st Jul 2026517 AMAQI
21st Jul 2026488 AMAQI
21st Jul 2026519 AMAQI
21st Jul 20264910 AMAQI
21st Jul 20265211 AMAQI
21st Jul 2026561 PMAQI
21st Jul 2026542 PMAQI
21st Jul 2026563 PMAQI
21st Jul 2026584 PMAQI
21st Jul 2026565 PMAQI
21st Jul 2026576 PMAQI
21st Jul 2026827 PMAQI
21st Jul 2026578 PMAQI
21st Jul 2026559 PMAQI
21st Jul 20265410 PMAQI
21st Jul 20265411 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026561 AMAQI
22nd Jul 2026562 AMAQI
22nd Jul 2026553 AMAQI

25°C21/29°C

22nd Jul 2026554 AMAQI
22nd Jul 2026545 AMAQI
22nd Jul 2026526 AMAQI
22nd Jul 2026547 AMAQI
22nd Jul 2026538 AMAQI
22nd Jul 2026539 AMAQI
22nd Jul 20265510 AMAQI
22nd Jul 20265511 AMAQI
22nd Jul 20265712 PMAQI
22nd Jul 2026571 PMAQI
22nd Jul 2026622 PMAQI
22nd Jul 2026583 PMAQI
22nd Jul 2026624 PMAQI
22nd Jul 2026605 PMAQI
22nd Jul 2026946 PMAQI
22nd Jul 2026927 PMAQI
22nd Jul 2026818 PMAQI
22nd Jul 2026769 PMAQI
22nd Jul 20268010 PMAQI
22nd Jul 20266811 PMAQI
23rd Jul 20266812 AMAQI
23rd Jul 2026681 AMAQI
23rd Jul 2026572 AMAQI
23rd Jul 2026683 AMAQI

25°C20/32°C

23rd Jul 2026654 AMAQI
23rd Jul 2026665 AMAQI
23rd Jul 2026536 AMAQI
23rd Jul 2026537 AMAQI
23rd Jul 2026558 AMAQI
23rd Jul 2026609 AMAQI
23rd Jul 20266410 AMAQI
23rd Jul 20265411 AMAQI
23rd Jul 20264512 PMAQI
23rd Jul 2026381 PMAQI
23rd Jul 2026422 PMAQI
23rd Jul 2026363 PMAQI
23rd Jul 2026314 PMAQI
23rd Jul 2026335 PMAQI
23rd Jul 2026446 PMAQI
23rd Jul 2026317 PMAQI
23rd Jul 2026278 PMAQI
23rd Jul 2026389 PMAQI
23rd Jul 20262910 PMAQI
23rd Jul 20262711 PMAQI
24th Jul 20262512 AMAQI
24th Jul 2026231 AMAQI
24th Jul 2026312 AMAQI
24th Jul 2026293 AMAQI

25°C21/30°C

24th Jul 2026334 AMAQI
24th Jul 2026275 AMAQI
24th Jul 2026466 AMAQI
24th Jul 2026407 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026449 AMAQI
24th Jul 20264610 AMAQI
24th Jul 20265211 AMAQI
24th Jul 20264212 PMAQI
24th Jul 2026331 PMAQI
24th Jul 2026422 PMAQI
24th Jul 2026273 PMAQI
24th Jul 2026194 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026256 PMAQI
24th Jul 2026337 PMAQI
24th Jul 2026338 PMAQI
24th Jul 2026339 PMAQI
24th Jul 20262910 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20262912 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026292 AMAQI
25th Jul 2026293 AMAQI

23°C20/28°C

25th Jul 2026314 AMAQI
25th Jul 2026335 AMAQI
25th Jul 2026296 AMAQI
25th Jul 2026297 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026319 AMAQI
25th Jul 20263110 AMAQI
25th Jul 20262911 AMAQI
25th Jul 20262512 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026292 PMAQI
25th Jul 2026273 PMAQI
25th Jul 2026254 PMAQI
25th Jul 2026255 PMAQI
25th Jul 2026296 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026258 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262111 PMAQI
26th Jul 20262312 AMAQI
26th Jul 2026211 AMAQI
26th Jul 2026212 AMAQI
26th Jul 2026213 AMAQI

23°C19/27°C

26th Jul 2026274 AMAQI
26th Jul 2026275 AMAQI
26th Jul 2026336 AMAQI
26th Jul 2026277 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026299 AMAQI
26th Jul 20262910 AMAQI
26th Jul 20262711 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026271 PMAQI
26th Jul 2026212 PMAQI
26th Jul 2026233 PMAQI
26th Jul 2026234 PMAQI
26th Jul 2026215 PMAQI
26th Jul 2026216 PMAQI
26th Jul 2026257 PMAQI
26th Jul 2026218 PMAQI
26th Jul 2026219 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262311 PMAQI
27th Jul 20262312 AMAQI
27th Jul 2026231 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026213 AMAQI

21°C18/25°C

27th Jul 2026214 AMAQI
27th Jul 2026215 AMAQI
27th Jul 2026236 AMAQI
27th Jul 2026237 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026239 AMAQI
27th Jul 20262310 AMAQI
27th Jul 20262111 AMAQI
27th Jul 20262112 PMAQI
27th Jul 2026191 PMAQI
27th Jul 2026212 PMAQI
27th Jul 2026213 PMAQI
27th Jul 2026174 PMAQI
27th Jul 2026215 PMAQI
27th Jul 2026216 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026198 PMAQI
27th Jul 2026199 PMAQI
27th Jul 20261910 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262312 AMAQI
28th Jul 2026231 AMAQI
28th Jul 2026252 AMAQI
28th Jul 2026253 AMAQI

22°C17/25°C

28th Jul 2026234 AMAQI
28th Jul 2026295 AMAQI
28th Jul 2026256 AMAQI
28th Jul 2026297 AMAQI
28th Jul 2026298 AMAQI
28th Jul 2026339 AMAQI
28th Jul 20262910 AMAQI
28th Jul 20262511 AMAQI
28th Jul 20262312 PMAQI
28th Jul 2026251 PMAQI
28th Jul 2026312 PMAQI
28th Jul 2026303 PMAQI
28th Jul 2026314 PMAQI
28th Jul 2026315 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026278 PMAQI
28th Jul 2026299 PMAQI
28th Jul 20262910 PMAQI
28th Jul 20262911 PMAQI
29th Jul 20262912 AMAQI
29th Jul 2026251 AMAQI
29th Jul 2026252 AMAQI
29th Jul 2026273 AMAQI

21°C18/29°C

29th Jul 2026254 AMAQI
29th Jul 2026295 AMAQI
29th Jul 2026336 AMAQI
29th Jul 2026297 AMAQI
29th Jul 2026338 AMAQI
29th Jul 2026339 AMAQI
29th Jul 20263310 AMAQI
29th Jul 20262511 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026331 PMAQI
29th Jul 2026332 PMAQI
29th Jul 2026333 PMAQI
29th Jul 2026294 PMAQI
29th Jul 2026325 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026387 PMAQI
29th Jul 2026338 PMAQI
29th Jul 2026389 PMAQI
29th Jul 20263310 PMAQI
29th Jul 20262511 PMAQI
30th Jul 20263312 AMAQI
30th Jul 2026331 AMAQI
30th Jul 2026252 AMAQI
30th Jul 2026253 AMAQI

20°C18/23°C

30th Jul 2026294 AMAQI
30th Jul 2026295 AMAQI
30th Jul 2026276 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262511 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026272 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026314 PMAQI
30th Jul 2026295 PMAQI
30th Jul 2026336 PMAQI
30th Jul 2026317 PMAQI
30th Jul 2026298 PMAQI
30th Jul 2026319 PMAQI
30th Jul 20263610 PMAQI
30th Jul 20263311 PMAQI
31st Jul 20263312 AMAQI
31st Jul 2026331 AMAQI
31st Jul 2026332 AMAQI
31st Jul 2026313 AMAQI

22°C18/27°C

31st Jul 2026364 AMAQI
31st Jul 2026335 AMAQI
31st Jul 2026336 AMAQI
31st Jul 2026367 AMAQI
31st Jul 2026338 AMAQI
31st Jul 2026299 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20262911 AMAQI
31st Jul 20263112 PMAQI
31st Jul 2026331 PMAQI
31st Jul 2026312 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026314 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026316 PMAQI
31st Jul 2026297 PMAQI
31st Jul 2026298 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20262910 PMAQI
31st Jul 20262911 PMAQI
1st Aug 20262912 AMAQI
1st Aug 2026291 AMAQI
1st Aug 2026312 AMAQI
1st Aug 2026293 AMAQI

23°C19/26°C

1st Aug 2026294 AMAQI
1st Aug 2026315 AMAQI
1st Aug 2026296 AMAQI
1st Aug 2026297 AMAQI
1st Aug 2026298 AMAQI
1st Aug 2026299 AMAQI
1st Aug 20263110 AMAQI
1st Aug 20263311 AMAQI
1st Aug 20263612 PMAQI
1st Aug 2026311 PMAQI
1st Aug 2026332 PMAQI
1st Aug 2026363 PMAQI
1st Aug 2026334 PMAQI
1st Aug 2026335 PMAQI
1st Aug 2026386 PMAQI
1st Aug 2026337 PMAQI
1st Aug 2026388 PMAQI
1st Aug 2026389 PMAQI
1st Aug 20263310 PMAQI
1st Aug 20263611 PMAQI
2nd Aug 20263612 AMAQI
2nd Aug 2026331 AMAQI
2nd Aug 2026362 AMAQI
2nd Aug 2026333 AMAQI

23°C19/30°C

2nd Aug 2026334 AMAQI
2nd Aug 2026335 AMAQI
2nd Aug 2026316 AMAQI
2nd Aug 2026367 AMAQI
2nd Aug 2026368 AMAQI
2nd Aug 2026339 AMAQI
2nd Aug 20263610 AMAQI
2nd Aug 20263111 AMAQI
2nd Aug 20263312 PMAQI
2nd Aug 2026331 PMAQI
2nd Aug 2026312 PMAQI
2nd Aug 2026333 PMAQI
2nd Aug 2026334 PMAQI
2nd Aug 2026315 PMAQI
2nd Aug 2026336 PMAQI
2nd Aug 2026337 PMAQI
2nd Aug 2026318 PMAQI
2nd Aug 2026339 PMAQI
2nd Aug 20263110 PMAQI
2nd Aug 20263111 PMAQI
3rd Aug 20263312 AMAQI
3rd Aug 2026311 AMAQI
3rd Aug 2026312 AMAQI
3rd Aug 2026293 AMAQI

24°C20/29°C

3rd Aug 2026314 AMAQI
3rd Aug 2026315 AMAQI
3rd Aug 2026296 AMAQI
3rd Aug 2026317 AMAQI
3rd Aug 2026298 AMAQI
3rd Aug 2026319 AMAQI
3rd Aug 20263110 AMAQI
3rd Aug 20263111 AMAQI
3rd Aug 20263112 PMAQI
3rd Aug 2026361 PMAQI
3rd Aug 2026332 PMAQI
3rd Aug 2026333 PMAQI
3rd Aug 2026334 PMAQI
3rd Aug 2026315 PMAQI
3rd Aug 2026316 PMAQI
3rd Aug 2026277 PMAQI
3rd Aug 2026258 PMAQI
3rd Aug 2026259 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262811 PMAQI
4th Aug 20263212 AMAQI
4th Aug 2026261 AMAQI
4th Aug 2026302 AMAQI
4th Aug 2026303 AMAQI

24°C20/29°C

4th Aug 2026364 AMAQI
4th Aug 2026335 AMAQI
4th Aug 2026336 AMAQI
4th Aug 2026337 AMAQI
4th Aug 2026318 AMAQI
4th Aug 2026339 AMAQI
4th Aug 20263610 AMAQI
4th Aug 20263111 AMAQI
4th Aug 20263312 PMAQI
4th Aug 2026291 PMAQI
4th Aug 2026312 PMAQI
4th Aug 2026333 PMAQI
4th Aug 2026384 PMAQI
4th Aug 2026295 PMAQI
4th Aug 2026256 PMAQI
4th Aug 2026297 PMAQI
4th Aug 2026298 PMAQI
4th Aug 2026299 PMAQI
4th Aug 20263310 PMAQI
4th Aug 20263111 PMAQI
5th Aug 20262912 AMAQI
5th Aug 2026291 AMAQI
5th Aug 2026332 AMAQI
5th Aug 2026313 AMAQI

24°C18/31°C

5th Aug 2026274 AMAQI
5th Aug 2026275 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026257 AMAQI
5th Aug 2026238 AMAQI
5th Aug 2026239 AMAQI
5th Aug 20262310 AMAQI
5th Aug 20262111 AMAQI
5th Aug 20262112 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026233 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026255 PMAQI
5th Aug 2026256 PMAQI
5th Aug 2026237 PMAQI
5th Aug 2026258 PMAQI
5th Aug 2026259 PMAQI
5th Aug 20262310 PMAQI
5th Aug 20262311 PMAQI
6th Aug 20262112 AMAQI
6th Aug 2026231 AMAQI
6th Aug 2026212 AMAQI
6th Aug 2026213 AMAQI

24°C16/33°C

6th Aug 2026214 AMAQI
6th Aug 2026215 AMAQI
6th Aug 2026216 AMAQI
6th Aug 2026217 AMAQI
6th Aug 2026218 AMAQI
6th Aug 2026219 AMAQI
6th Aug 20262310 AMAQI
6th Aug 20262511 AMAQI
6th Aug 20262112 PMAQI
6th Aug 2026231 PMAQI
6th Aug 2026232 PMAQI
6th Aug 2026213 PMAQI
6th Aug 2026214 PMAQI
6th Aug 2026215 PMAQI
6th Aug 2026326 PMAQI
6th Aug 2026277 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026219 PMAQI
6th Aug 20262110 PMAQI
6th Aug 20262111 PMAQI
7th Aug 20262112 AMAQI
7th Aug 2026211 AMAQI
7th Aug 2026212 AMAQI
7th Aug 2026213 AMAQI

26°C20/34°C

7th Aug 2026214 AMAQI
7th Aug 2026215 AMAQI
7th Aug 2026216 AMAQI
7th Aug 2026217 AMAQI
7th Aug 2026218 AMAQI
7th Aug 2026219 AMAQI
7th Aug 20262110 AMAQI
7th Aug 20262111 AMAQI
7th Aug 20263212 PMAQI
7th Aug 2026471 PMAQI
7th Aug 2026212 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026254 PMAQI
7th Aug 2026215 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026218 PMAQI
7th Aug 2026329 PMAQI
7th Aug 20262110 PMAQI
7th Aug 20263211 PMAQI
8th Aug 20263312 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026312 AMAQI
8th Aug 2026253 AMAQI

26°C21/35°C

8th Aug 2026234 AMAQI
8th Aug 2026325 AMAQI
8th Aug 2026316 AMAQI
8th Aug 2026237 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026239 AMAQI
8th Aug 20262310 AMAQI
8th Aug 20262311 AMAQI
8th Aug 20262712 PMAQI
8th Aug 2026251 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026273 PMAQI
8th Aug 2026274 PMAQI
8th Aug 2026275 PMAQI
8th Aug 2026216 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262111 PMAQI
9th Aug 20262712 AMAQI
9th Aug 2026361 AMAQI
9th Aug 2026272 AMAQI
9th Aug 2026333 AMAQI

23°C20/30°C

9th Aug 2026274 AMAQI
9th Aug 2026335 AMAQI
9th Aug 2026366 AMAQI
9th Aug 2026407 AMAQI
9th Aug 2026338 AMAQI
9th Aug 2026339 AMAQI
9th Aug 20263310 AMAQI
9th Aug 20262311 AMAQI
9th Aug 20262312 PMAQI
9th Aug 2026251 PMAQI
9th Aug 2026252 PMAQI
9th Aug 2026293 PMAQI
9th Aug 2026254 PMAQI
9th Aug 2026235 PMAQI
9th Aug 2026216 PMAQI
9th Aug 2026257 PMAQI
9th Aug 2026258 PMAQI
9th Aug 2026339 PMAQI
9th Aug 20263810 PMAQI
9th Aug 20263811 PMAQI
10th Aug 20263312 AMAQI
10th Aug 2026291 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026253 AMAQI

23°C19/28°C

10th Aug 2026294 AMAQI
10th Aug 2026255 AMAQI
10th Aug 2026296 AMAQI
10th Aug 2026387 AMAQI
10th Aug 2026338 AMAQI
10th Aug 2026389 AMAQI
10th Aug 20263810 AMAQI
10th Aug 20263811 AMAQI
10th Aug 20263312 PMAQI
10th Aug 2026331 PMAQI
10th Aug 2026232 PMAQI
10th Aug 2026363 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026215 PMAQI
10th Aug 2026236 PMAQI
10th Aug 2026237 PMAQI
10th Aug 2026258 PMAQI
10th Aug 2026259 PMAQI
10th Aug 20263310 PMAQI
10th Aug 20262511 PMAQI
11th Aug 20262912 AMAQI
11th Aug 2026341 AMAQI
11th Aug 2026362 AMAQI
11th Aug 2026363 AMAQI

22°C18/27°C

11th Aug 2026364 AMAQI
11th Aug 2026365 AMAQI
11th Aug 2026366 AMAQI
11th Aug 2026337 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026299 AMAQI
11th Aug 20262910 AMAQI
11th Aug 20262911 AMAQI
11th Aug 20262112 PMAQI
11th Aug 2026271 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026333 PMAQI
11th Aug 2026334 PMAQI
11th Aug 2026365 PMAQI
11th Aug 2026346 PMAQI
11th Aug 2026297 PMAQI
11th Aug 2026348 PMAQI
11th Aug 2026349 PMAQI
11th Aug 20262910 PMAQI
11th Aug 20263611 PMAQI
12th Aug 20263312 AMAQI
12th Aug 2026331 AMAQI
12th Aug 2026312 AMAQI
12th Aug 2026293 AMAQI

19°C16/24°C

12th Aug 2026254 AMAQI
12th Aug 2026295 AMAQI
12th Aug 2026276 AMAQI
12th Aug 2026257 AMAQI
12th Aug 2026258 AMAQI
12th Aug 2026259 AMAQI
12th Aug 20262310 AMAQI
12th Aug 20262111 AMAQI
12th Aug 20262112 PMAQI
12th Aug 2026251 PMAQI
12th Aug 2026252 PMAQI
12th Aug 2026213 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026235 PMAQI
12th Aug 2026256 PMAQI
12th Aug 2026217 PMAQI
12th Aug 2026278 PMAQI
12th Aug 2026259 PMAQI
12th Aug 20262710 PMAQI
12th Aug 20262511 PMAQI
13th Aug 20262312 AMAQI
13th Aug 2026251 AMAQI
13th Aug 2026272 AMAQI
13th Aug 2026293 AMAQI

21°C18/26°C

13th Aug 2026334 AMAQI
13th Aug 2026315 AMAQI
13th Aug 2026296 AMAQI
13th Aug 2026337 AMAQI
13th Aug 2026338 AMAQI
13th Aug 2026319 AMAQI
13th Aug 20263110 AMAQI
13th Aug 20262711 AMAQI
13th Aug 20262912 PMAQI
13th Aug 2026251 PMAQI
13th Aug 2026272 PMAQI
13th Aug 2026233 PMAQI
13th Aug 2026214 PMAQI
13th Aug 2026255 PMAQI
13th Aug 2026216 PMAQI
13th Aug 2026237 PMAQI
13th Aug 2026258 PMAQI
13th Aug 2026279 PMAQI
13th Aug 20262510 PMAQI
13th Aug 20262511 PMAQI
14th Aug 20262512 AMAQI
14th Aug 2026211 AMAQI
14th Aug 2026212 AMAQI
14th Aug 2026213 AMAQI

23°C17/32°C

14th Aug 2026234 AMAQI
14th Aug 2026215 AMAQI
14th Aug 2026236 AMAQI
14th Aug 2026217 AMAQI
14th Aug 2026218 AMAQI
14th Aug 2026199 AMAQI
14th Aug 20262310 AMAQI
14th Aug 20262511 AMAQI
14th Aug 20262312 PMAQI
14th Aug 2026231 PMAQI
14th Aug 2026192 PMAQI
14th Aug 2026213 PMAQI
14th Aug 2026174 PMAQI
14th Aug 2026175 PMAQI
14th Aug 2026216 PMAQI
14th Aug 2026197 PMAQI
14th Aug 2026198 PMAQI
14th Aug 2026169 PMAQI
14th Aug 20261910 PMAQI
14th Aug 20262111 PMAQI
15th Aug 20261712 AMAQI
15th Aug 2026231 AMAQI
15th Aug 2026212 AMAQI
15th Aug 2026233 AMAQI

23°C18/31°C

15th Aug 2026234 AMAQI
15th Aug 2026275 AMAQI
15th Aug 2026276 AMAQI
15th Aug 2026297 AMAQI
15th Aug 2026278 AMAQI
15th Aug 2026219 AMAQI
15th Aug 20262510 AMAQI
15th Aug 20262511 AMAQI
15th Aug 20262112 PMAQI
15th Aug 2026211 PMAQI
15th Aug 2026232 PMAQI
15th Aug 2026273 PMAQI
15th Aug 2026254 PMAQI
15th Aug 2026235 PMAQI
15th Aug 2026236 PMAQI
15th Aug 2026217 PMAQI
15th Aug 2026178 PMAQI
15th Aug 2026219 PMAQI
15th Aug 20261910 PMAQI
15th Aug 20261911 PMAQI
16th Aug 20262312 AMAQI
16th Aug 2026211 AMAQI
16th Aug 2026252 AMAQI
16th Aug 2026213 AMAQI

23°C19/30°C

16th Aug 2026254 AMAQI
16th Aug 2026235 AMAQI
16th Aug 2026256 AMAQI
16th Aug 2026237 AMAQI
16th Aug 2026238 AMAQI
16th Aug 2026219 AMAQI
16th Aug 20262310 AMAQI
16th Aug 20262311 AMAQI
16th Aug 20262312 PMAQI
16th Aug 2026191 PMAQI
16th Aug 2026212 PMAQI
16th Aug 2026213 PMAQI
16th Aug 2026214 PMAQI
16th Aug 2026215 PMAQI
16th Aug 2026296 PMAQI
16th Aug 2026237 PMAQI
16th Aug 2026258 PMAQI
16th Aug 2026319 PMAQI
16th Aug 20262710 PMAQI
16th Aug 20263311 PMAQI
17th Aug 20262912 AMAQI
17th Aug 2026331 AMAQI
17th Aug 2026332 AMAQI
17th Aug 2026293 AMAQI

23°C20/28°C

17th Aug 2026334 AMAQI
17th Aug 2026335 AMAQI
17th Aug 2026336 AMAQI
17th Aug 2026297 AMAQI
17th Aug 2026278 AMAQI
17th Aug 2026339 AMAQI
17th Aug 20263310 AMAQI
17th Aug 20263311 AMAQI
17th Aug 20263112 PMAQI
17th Aug 2026291 PMAQI
17th Aug 2026252 PMAQI
17th Aug 2026293 PMAQI
17th Aug 2026294 PMAQI
17th Aug 2026335 PMAQI
17th Aug 2026296 PMAQI
17th Aug 2026297 PMAQI
17th Aug 2026298 PMAQI
17th Aug 2026279 PMAQI
17th Aug 20262510 PMAQI
17th Aug 20262511 PMAQI
18th Aug 20262912 AMAQI
18th Aug 2026251 AMAQI
18th Aug 2026252 AMAQI
18th Aug 2026253 AMAQI

13°C12/16°C

18th Aug 2026234 AMAQI
4 AM
18th Aug 2026255 AMAQI
18th Aug 2026236 AMAQI
18th Aug 2026277 AMAQI
18th Aug 2026218 AMAQI
18th Aug 2026219 AMAQI
18th Aug 20262510 AMAQI
18th Aug 20262311 AMAQI
11 AM
18th Aug 20262312 PMAQI
18th Aug 2026251 PMAQI
18th Aug 2026252 PMAQI
18th Aug 2026253 PMAQI
18th Aug 2026234 PMAQI
18th Aug 2026255 PMAQI
18th Aug 2026256 PMAQI
6 PM
18th Aug 2026277 PMAQI
18th Aug 2026278 PMAQI
18th Aug 2026259 PMAQI
18th Aug 20262710 PMAQI
18th Aug 20262511 PMAQI
11 PM
3 AM

24°C21/29°C

Day time
Avg. Highest Time
5 AM - 7 AM

32AQI

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

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 32), while the lowest AQI was between 12 PM to 12 PM (Avg. 29).
Night time
Avg. Highest Time
12 AM

31AQI

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

30AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 31), while the lowest AQI was between 1 AM to 3 AM (Avg. 30).

2026 Days Vs Air Quality

Muikamachi, Tokamachi, Niigata, Japan

2026

85%

196

15%

34

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

Good
196 Days
Moderate
34 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 85%

Health Risk Level:

Low

In 2026, 85% of 230 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

Muikamachi, Tokamachi, Niigata, 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
15AQI (US)
2nd January 2026
18AQI (US)
3rd January 2026
18AQI (US)
4th January 2026
29AQI (US)
5th January 2026
23AQI (US)
6th January 2026
20AQI (US)
7th January 2026
26AQI (US)
8th January 2026
22AQI (US)
9th January 2026
18AQI (US)
10th January 2026
28AQI (US)
11th January 2026
31AQI (US)
12th January 2026
17AQI (US)
13th January 2026
21AQI (US)
14th January 2026
15AQI (US)
15th January 2026
25AQI (US)
16th January 2026
43AQI (US)
17th January 2026
40AQI (US)
18th January 2026
29AQI (US)
19th January 2026
50AQI (US)
20th January 2026
25AQI (US)
21st January 2026
12AQI (US)
22nd January 2026
26AQI (US)
23rd January 2026
50AQI (US)
24th January 2026
49AQI (US)
25th January 2026
40AQI (US)
26th January 2026
29AQI (US)
27th January 2026
42AQI (US)
28th January 2026
26AQI (US)
29th January 2026
24AQI (US)
30th January 2026
35AQI (US)
31st January 2026
40AQI (US)
1st February 2026
39AQI (US)
2nd February 2026
49AQI (US)
3rd February 2026
31AQI (US)
4th February 2026
50AQI (US)
5th February 2026
47AQI (US)
6th February 2026
37AQI (US)
7th February 2026
14AQI (US)
8th February 2026
21AQI (US)
9th February 2026
42AQI (US)
10th February 2026
50AQI (US)
11th February 2026
53AQI (US)
12th February 2026
36AQI (US)
13th February 2026
49AQI (US)
14th February 2026
71AQI (US)
15th February 2026
55AQI (US)
16th February 2026
45AQI (US)
17th February 2026
19AQI (US)
18th February 2026
31AQI (US)
19th February 2026
31AQI (US)
20th February 2026
30AQI (US)
21st February 2026
48AQI (US)
22nd February 2026
45AQI (US)
23rd February 2026
47AQI (US)
24th February 2026
32AQI (US)
25th February 2026
31AQI (US)
26th February 2026
14AQI (US)
27th February 2026
42AQI (US)
28th February 2026
45AQI (US)
1st March 2026
42AQI (US)
2nd March 2026
90AQI (US)
3rd March 2026
53AQI (US)
4th March 2026
19AQI (US)
5th March 2026
67AQI (US)
6th March 2026
56AQI (US)
7th March 2026
48AQI (US)
8th March 2026
55AQI (US)
9th March 2026
53AQI (US)
10th March 2026
56AQI (US)
11th March 2026
58AQI (US)
12th March 2026
71AQI (US)
13th March 2026
46AQI (US)
14th March 2026
51AQI (US)
15th March 2026
63AQI (US)
16th March 2026
66AQI (US)
17th March 2026
63AQI (US)
18th March 2026
48AQI (US)
19th March 2026
31AQI (US)
20th March 2026
28AQI (US)
21st March 2026
58AQI (US)
22nd March 2026
44AQI (US)
23rd March 2026
53AQI (US)
24th March 2026
67AQI (US)
25th March 2026
56AQI (US)
26th March 2026
19AQI (US)
27th March 2026
19AQI (US)
28th March 2026
52AQI (US)
29th March 2026
57AQI (US)
30th March 2026
58AQI (US)
31st March 2026
46AQI (US)
1st April 2026
18AQI (US)
2nd April 2026
18AQI (US)
3rd April 2026
49AQI (US)
4th April 2026
46AQI (US)
5th April 2026
30AQI (US)
6th April 2026
20AQI (US)
7th April 2026
26AQI (US)
8th April 2026
26AQI (US)
9th April 2026
44AQI (US)
10th April 2026
46AQI (US)
11th April 2026
39AQI (US)
12th April 2026
35AQI (US)
13th April 2026
36AQI (US)
14th April 2026
44AQI (US)
15th April 2026
49AQI (US)
16th April 2026
34AQI (US)
17th April 2026
38AQI (US)
18th April 2026
38AQI (US)
19th April 2026
40AQI (US)
20th April 2026
38AQI (US)
21st April 2026
42AQI (US)
22nd April 2026
44AQI (US)
23rd April 2026
26AQI (US)
24th April 2026
31AQI (US)
25th April 2026
45AQI (US)
26th April 2026
50AQI (US)
27th April 2026
48AQI (US)
28th April 2026
40AQI (US)
29th April 2026
39AQI (US)
30th April 2026
40AQI (US)
1st May 2026
47AQI (US)
2nd May 2026
54AQI (US)
3rd May 2026
43AQI (US)
4th May 2026
29AQI (US)
5th May 2026
24AQI (US)
6th May 2026
35AQI (US)
7th May 2026
36AQI (US)
8th May 2026
26AQI (US)
9th May 2026
29AQI (US)
10th May 2026
35AQI (US)
11th May 2026
37AQI (US)
12th May 2026
44AQI (US)
13th May 2026
44AQI (US)
14th May 2026
38AQI (US)
15th May 2026
40AQI (US)
16th May 2026
84AQI (US)
17th May 2026
68AQI (US)
18th May 2026
53AQI (US)
19th May 2026
48AQI (US)
20th May 2026
60AQI (US)
21st May 2026
60AQI (US)
22nd May 2026
63AQI (US)
23rd May 2026
55AQI (US)
24th May 2026
59AQI (US)
25th May 2026
49AQI (US)
26th May 2026
41AQI (US)
27th May 2026
50AQI (US)
28th May 2026
27AQI (US)
29th May 2026
19AQI (US)
30th May 2026
23AQI (US)
31st May 2026
30AQI (US)
1st June 2026
43AQI (US)
2nd June 2026
45AQI (US)
3rd June 2026
19AQI (US)
4th June 2026
14AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
21AQI (US)
8th June 2026
21AQI (US)
9th June 2026
22AQI (US)
10th June 2026
21AQI (US)
11th June 2026
23AQI (US)
12th June 2026
24AQI (US)
13th June 2026
25AQI (US)
14th June 2026
23AQI (US)
15th June 2026
22AQI (US)
16th June 2026
19AQI (US)
17th June 2026
25AQI (US)
18th June 2026
26AQI (US)
19th June 2026
31AQI (US)
20th June 2026
22AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
20AQI (US)
25th June 2026
25AQI (US)
26th June 2026
28AQI (US)
27th June 2026
27AQI (US)
28th June 2026
28AQI (US)
29th June 2026
28AQI (US)
30th June 2026
23AQI (US)
1st July 2026
23AQI (US)
2nd July 2026
22AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
24AQI (US)
5th July 2026
22AQI (US)
6th July 2026
20AQI (US)
7th July 2026
20AQI (US)
8th July 2026
25AQI (US)
9th July 2026
25AQI (US)
10th July 2026
28AQI (US)
11th July 2026
29AQI (US)
12th July 2026
27AQI (US)
13th July 2026
29AQI (US)
14th July 2026
29AQI (US)
15th July 2026
25AQI (US)
16th July 2026
27AQI (US)
17th July 2026
32AQI (US)
18th July 2026
30AQI (US)
19th July 2026
29AQI (US)
20th July 2026
44AQI (US)
21st July 2026
53AQI (US)
22nd July 2026
62AQI (US)
23rd July 2026
48AQI (US)
24th July 2026
33AQI (US)
25th July 2026
28AQI (US)
26th July 2026
24AQI (US)
27th July 2026
21AQI (US)
28th July 2026
28AQI (US)
29th July 2026
30AQI (US)
30th July 2026
28AQI (US)
31st July 2026
31AQI (US)
1st August 2026
32AQI (US)
2nd August 2026
33AQI (US)
3rd August 2026
30AQI (US)
4th August 2026
31AQI (US)
5th August 2026
25AQI (US)
6th August 2026
22AQI (US)
7th August 2026
24AQI (US)
8th August 2026
25AQI (US)
9th August 2026
30AQI (US)
10th August 2026
30AQI (US)
11th August 2026
32AQI (US)
12th August 2026
26AQI (US)
13th August 2026
27AQI (US)
14th August 2026
21AQI (US)
15th August 2026
23AQI (US)
16th August 2026
24AQI (US)
17th August 2026
30AQI (US)
18th August 2026
25AQI (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

29AQI (US)

39AQI (US)

51AQI (US)

37AQI (US)

44AQI (US)

24AQI (US)

30AQI (US)

27AQI (US)

No. of days

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

202636AQI (US)

31
25
3
11
20
30
22
9
30
29
2
18
196
34

Highest AQI (US) recorded in

March

51AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202540AQI (US)

31
27
1
22
9
27
3
27
4
23
7
21
10
28
3
30
19
12
25
5
29
2
309
56

Highest AQI (US) recorded in

July

49AQI (US)

Lowest AQI (US) recorded in

September

32AQI (US)

202433AQI (US)

29
1
29
26
5
22
8
29
2
22
8
28
3
30
1
30
31
28
2
31
335
30

Highest AQI (US) recorded in

April

48AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

202334AQI (US)

30
27
1
22
9
24
6
25
6
28
2
24
7
29
2
30
31
26
3
31
327
36

Highest AQI (US) recorded in

April

46AQI (US)

Lowest AQI (US) recorded in

October

26AQI (US)

202234AQI (US)

29
21
26
5
24
5
25
6
24
6
21
1
21
7
31
30
31
284
29

Highest AQI (US) recorded in

May

42AQI (US)

Lowest AQI (US) recorded in

August

17AQI (US)

202130AQI (US)

27
3
26
2
29
20
2
29
2
23
7
28
3
31
30
31
30
24
328
19

Highest AQI (US) recorded in

June

41AQI (US)

Lowest AQI (US) recorded in

December

23AQI (US)

202026AQI (US)

13
20
1
18
27
3
28
1
2
4
2
28
138
9

Highest AQI (US) recorded in

August

46AQI (US)

Lowest AQI (US) recorded in

December

20AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
40AQI (US)
Least Polluted Year Recorded
2020(Avg.)
26AQI (US)

Muikamachi's annual 2026 AQI (US) (36) shows an average percentage change of 11.5% (worsened AQI (US)) compared to previous years: 2020 (26), 2021 (30), 2022 (34), 2023 (34), 2024 (33), 2025 (40).