Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Oinomori, Tendo, Yamagata, 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

Oinomori, Tendo, Yamagata, Japan

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
26th Aug 2025
53AQI
Lowest AQI recorded on
3rd Aug 2026
18AQI

Same Day Analysis (15th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 34 of Good air quality on the same day.

Day & Night AQI Trend: 14th Aug - 15th Aug 2026

Oinomori, Tendo, Yamagata, Japan

AQI
Day
Night
.

4 AM14th Aug 2026

6 PM

3 AM15th Aug 2026

Day time
Avg. Highest Time
11AM14th Aug

46AQI

Avg. Lowest Time
9AM14th Aug

20AQI

Night time
Avg. Highest Time
2AM15th Aug

40AQI

Avg. Lowest Time
12AM15th Aug

21AQI

In the last 24 hours,

Oinomori's AQI reached its highest point of 46 at 11 AM during the Day, while the lowest point, 20, was recorded at 9 AM during the Day between 14th Aug and 15th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Oinomori, Tendo, Yamagata, Japan

JulAug
17th - 18th18th - 19th19th - 20th20th - 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
Day
Night
17th Jul 2026284 AMAQI
17th Jul 2026265 AMAQI
17th Jul 2026276 AMAQI
17th Jul 2026267 AMAQI
17th Jul 2026248 AMAQI
17th Jul 2026249 AMAQI
17th Jul 20263010 AMAQI
17th Jul 20262611 AMAQI
17th Jul 20262412 PMAQI
17th Jul 2026241 PMAQI
17th Jul 2026242 PMAQI
17th Jul 2026223 PMAQI
17th Jul 2026254 PMAQI
17th Jul 2026235 PMAQI
17th Jul 2026236 PMAQI
17th Jul 2026257 PMAQI
17th Jul 2026218 PMAQI
17th Jul 2026339 PMAQI
17th Jul 20262510 PMAQI
17th Jul 20262111 PMAQI
18th Jul 20262512 AMAQI
18th Jul 2026211 AMAQI
18th Jul 2026232 AMAQI
18th Jul 2026253 AMAQI

23°C20/26°C

18th Jul 2026214 AMAQI
18th Jul 2026215 AMAQI
18th Jul 2026256 AMAQI
18th Jul 2026257 AMAQI
18th Jul 2026318 AMAQI
18th Jul 2026369 AMAQI
18th Jul 20263610 AMAQI
18th Jul 20262711 AMAQI
18th Jul 20262912 PMAQI
18th Jul 2026251 PMAQI
18th Jul 2026312 PMAQI
18th Jul 2026233 PMAQI
18th Jul 2026294 PMAQI
18th Jul 2026275 PMAQI
18th Jul 2026316 PMAQI
18th Jul 2026297 PMAQI
18th Jul 2026258 PMAQI
18th Jul 2026259 PMAQI
18th Jul 20262510 PMAQI
18th Jul 20262111 PMAQI
19th Jul 20262712 AMAQI
19th Jul 2026311 AMAQI
19th Jul 2026212 AMAQI
19th Jul 2026213 AMAQI

23°C21/27°C

19th Jul 2026234 AMAQI
19th Jul 2026215 AMAQI
19th Jul 2026236 AMAQI
19th Jul 2026257 AMAQI
19th Jul 2026368 AMAQI
19th Jul 2026279 AMAQI
19th Jul 20262910 AMAQI
19th Jul 20262711 AMAQI
19th Jul 20262912 PMAQI
19th Jul 2026311 PMAQI
19th Jul 2026342 PMAQI
19th Jul 2026383 PMAQI
19th Jul 2026484 PMAQI
19th Jul 2026425 PMAQI
19th Jul 2026516 PMAQI
19th Jul 2026427 PMAQI
19th Jul 2026528 PMAQI
19th Jul 2026449 PMAQI
19th Jul 20265510 PMAQI
19th Jul 20263411 PMAQI
20th Jul 20263112 AMAQI
20th Jul 2026461 AMAQI
20th Jul 2026292 AMAQI
20th Jul 2026483 AMAQI

24°C20/31°C

20th Jul 2026494 AMAQI
20th Jul 2026555 AMAQI
20th Jul 2026626 AMAQI
20th Jul 2026577 AMAQI
20th Jul 2026528 AMAQI
20th Jul 2026529 AMAQI
20th Jul 20265710 AMAQI
20th Jul 20265611 AMAQI
20th Jul 20266412 PMAQI
20th Jul 2026741 PMAQI
20th Jul 2026812 PMAQI
20th Jul 2026783 PMAQI
20th Jul 2026814 PMAQI
20th Jul 2026835 PMAQI
20th Jul 2026786 PMAQI
20th Jul 2026717 PMAQI
20th Jul 2026788 PMAQI
20th Jul 2026739 PMAQI
20th Jul 20267610 PMAQI
20th Jul 20267611 PMAQI
21st Jul 20267412 AMAQI
21st Jul 2026691 AMAQI
21st Jul 2026722 AMAQI
21st Jul 2026723 AMAQI

25°C20/31°C

21st Jul 2026694 AMAQI
21st Jul 2026715 AMAQI
21st Jul 2026696 AMAQI
21st Jul 2026657 AMAQI
21st Jul 2026688 AMAQI
21st Jul 2026699 AMAQI
21st Jul 20266910 AMAQI
21st Jul 20267011 AMAQI
21st Jul 2026661 PMAQI
21st Jul 2026552 PMAQI
21st Jul 2026403 PMAQI
21st Jul 2026274 PMAQI
21st Jul 2026215 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026777 PMAQI
21st Jul 2026278 PMAQI
21st Jul 2026259 PMAQI
21st Jul 20263110 PMAQI
21st Jul 20263111 PMAQI
22nd Jul 20263112 AMAQI
22nd Jul 2026271 AMAQI
22nd Jul 2026232 AMAQI
22nd Jul 2026253 AMAQI

25°C20/30°C

22nd Jul 2026274 AMAQI
22nd Jul 2026365 AMAQI
22nd Jul 2026296 AMAQI
22nd Jul 2026297 AMAQI
22nd Jul 2026408 AMAQI
22nd Jul 2026469 AMAQI
22nd Jul 20265210 AMAQI
22nd Jul 20265511 AMAQI
22nd Jul 20266012 PMAQI
22nd Jul 2026701 PMAQI
22nd Jul 2026782 PMAQI
22nd Jul 2026823 PMAQI
22nd Jul 2026874 PMAQI
22nd Jul 2026835 PMAQI
22nd Jul 2026726 PMAQI
22nd Jul 2026717 PMAQI
22nd Jul 2026698 PMAQI
22nd Jul 2026689 PMAQI
22nd Jul 20266710 PMAQI
22nd Jul 20265811 PMAQI
23rd Jul 20264912 AMAQI
23rd Jul 2026361 AMAQI
23rd Jul 2026292 AMAQI
23rd Jul 2026293 AMAQI

25°C19/31°C

23rd Jul 2026314 AMAQI
23rd Jul 2026295 AMAQI
23rd Jul 2026256 AMAQI
23rd Jul 2026307 AMAQI
23rd Jul 2026338 AMAQI
23rd Jul 2026339 AMAQI
23rd Jul 20262710 AMAQI
23rd Jul 20262311 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026251 PMAQI
23rd Jul 2026212 PMAQI
23rd Jul 2026213 PMAQI
23rd Jul 2026274 PMAQI
23rd Jul 2026275 PMAQI
23rd Jul 2026216 PMAQI
23rd Jul 2026257 PMAQI
23rd Jul 2026258 PMAQI
23rd Jul 2026219 PMAQI
23rd Jul 20262110 PMAQI
23rd Jul 20262311 PMAQI
24th Jul 20262312 AMAQI
24th Jul 2026211 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026213 AMAQI

25°C19/32°C

24th Jul 2026254 AMAQI
24th Jul 2026385 AMAQI
24th Jul 2026236 AMAQI
24th Jul 2026277 AMAQI
24th Jul 2026238 AMAQI
24th Jul 2026389 AMAQI
24th Jul 20263610 AMAQI
24th Jul 20262911 AMAQI
24th Jul 20262912 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026382 PMAQI
24th Jul 2026333 PMAQI
24th Jul 2026274 PMAQI
24th Jul 2026235 PMAQI
24th Jul 2026216 PMAQI
24th Jul 2026217 PMAQI
24th Jul 2026218 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20264010 PMAQI
24th Jul 20263811 PMAQI
25th Jul 20262712 AMAQI
25th Jul 2026231 AMAQI
25th Jul 2026212 AMAQI
25th Jul 2026273 AMAQI

21°C19/24°C

25th Jul 2026274 AMAQI
25th Jul 2026345 AMAQI
25th Jul 2026256 AMAQI
25th Jul 2026277 AMAQI
25th Jul 2026298 AMAQI
25th Jul 2026279 AMAQI
25th Jul 20264010 AMAQI
25th Jul 20264211 AMAQI
25th Jul 20264412 PMAQI
25th Jul 2026321 PMAQI
25th Jul 2026462 PMAQI
25th Jul 2026463 PMAQI
25th Jul 2026494 PMAQI
25th Jul 2026385 PMAQI
25th Jul 2026366 PMAQI
25th Jul 2026507 PMAQI
25th Jul 2026478 PMAQI
25th Jul 2026479 PMAQI
25th Jul 20265210 PMAQI
25th Jul 20263411 PMAQI
26th Jul 20263812 AMAQI
26th Jul 2026231 AMAQI
26th Jul 2026292 AMAQI
26th Jul 2026223 AMAQI

21°C20/24°C

26th Jul 2026124 AMAQI
26th Jul 2026185 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026387 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026279 AMAQI
26th Jul 20264210 AMAQI
26th Jul 20264211 AMAQI
26th Jul 20264012 PMAQI
26th Jul 2026341 PMAQI
26th Jul 2026362 PMAQI
26th Jul 2026423 PMAQI
26th Jul 2026464 PMAQI
26th Jul 2026365 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026367 PMAQI
26th Jul 2026388 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20265410 PMAQI
26th Jul 20264611 PMAQI
27th Jul 20263412 AMAQI
27th Jul 2026291 AMAQI
27th Jul 2026272 AMAQI
27th Jul 2026253 AMAQI

20°C19/20°C

27th Jul 2026384 AMAQI
27th Jul 2026255 AMAQI
27th Jul 2026296 AMAQI
27th Jul 2026257 AMAQI
27th Jul 2026278 AMAQI
27th Jul 2026369 AMAQI
27th Jul 20264510 AMAQI
27th Jul 20264011 AMAQI
27th Jul 20263612 PMAQI
27th Jul 2026361 PMAQI
27th Jul 2026442 PMAQI
27th Jul 2026273 PMAQI
27th Jul 2026344 PMAQI
27th Jul 2026295 PMAQI
27th Jul 2026466 PMAQI
27th Jul 2026427 PMAQI
27th Jul 2026348 PMAQI
27th Jul 2026409 PMAQI
27th Jul 20263810 PMAQI
27th Jul 20263311 PMAQI
28th Jul 20263812 AMAQI
28th Jul 2026361 AMAQI
28th Jul 2026292 AMAQI
28th Jul 2026383 AMAQI

20°C17/24°C

28th Jul 2026364 AMAQI
28th Jul 2026295 AMAQI
28th Jul 2026446 AMAQI
28th Jul 2026297 AMAQI
28th Jul 2026348 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20262710 AMAQI
28th Jul 20264211 AMAQI
28th Jul 20262312 PMAQI
28th Jul 2026361 PMAQI
28th Jul 2026462 PMAQI
28th Jul 2026513 PMAQI
28th Jul 2026404 PMAQI
28th Jul 2026495 PMAQI
28th Jul 2026366 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026238 PMAQI
28th Jul 2026449 PMAQI
28th Jul 20264010 PMAQI
28th Jul 20264611 PMAQI
29th Jul 20263812 AMAQI
29th Jul 2026341 AMAQI
29th Jul 2026512 AMAQI
29th Jul 2026423 AMAQI

20°C15/25°C

29th Jul 2026464 AMAQI
29th Jul 2026325 AMAQI
29th Jul 2026466 AMAQI
29th Jul 2026297 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026299 AMAQI
29th Jul 20263110 AMAQI
29th Jul 20264011 AMAQI
29th Jul 20263112 PMAQI
29th Jul 2026341 PMAQI
29th Jul 2026362 PMAQI
29th Jul 2026293 PMAQI
29th Jul 2026364 PMAQI
29th Jul 2026365 PMAQI
29th Jul 2026446 PMAQI
29th Jul 2026487 PMAQI
29th Jul 2026428 PMAQI
29th Jul 2026369 PMAQI
29th Jul 20263410 PMAQI
29th Jul 20264411 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026382 AMAQI
30th Jul 2026463 AMAQI

20°C18/23°C

30th Jul 2026294 AMAQI
30th Jul 2026445 AMAQI
30th Jul 2026366 AMAQI
30th Jul 2026277 AMAQI
30th Jul 2026278 AMAQI
30th Jul 2026319 AMAQI
30th Jul 20263210 AMAQI
30th Jul 20264011 AMAQI
30th Jul 20263212 PMAQI
30th Jul 2026421 PMAQI
30th Jul 2026342 PMAQI
30th Jul 2026343 PMAQI
30th Jul 2026344 PMAQI
30th Jul 2026385 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026277 PMAQI
30th Jul 2026338 PMAQI
30th Jul 2026389 PMAQI
30th Jul 20263610 PMAQI
30th Jul 20263811 PMAQI
31st Jul 20262712 AMAQI
31st Jul 2026401 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026383 AMAQI

22°C18/26°C

31st Jul 2026294 AMAQI
31st Jul 2026345 AMAQI
31st Jul 2026386 AMAQI
31st Jul 2026387 AMAQI
31st Jul 2026448 AMAQI
31st Jul 2026429 AMAQI
31st Jul 20263610 AMAQI
31st Jul 20264011 AMAQI
31st Jul 20263212 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026252 PMAQI
31st Jul 2026273 PMAQI
31st Jul 2026274 PMAQI
31st Jul 2026255 PMAQI
31st Jul 2026296 PMAQI
31st Jul 2026277 PMAQI
31st Jul 2026328 PMAQI
31st Jul 2026219 PMAQI
31st Jul 20262310 PMAQI
31st Jul 20262911 PMAQI
1st Aug 20263212 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026502 AMAQI
1st Aug 2026423 AMAQI

21°C19/24°C

1st Aug 2026444 AMAQI
1st Aug 2026495 AMAQI
1st Aug 2026426 AMAQI
1st Aug 2026367 AMAQI
1st Aug 2026448 AMAQI
1st Aug 2026349 AMAQI
1st Aug 20263610 AMAQI
1st Aug 20264211 AMAQI
1st Aug 20264612 PMAQI
1st Aug 2026321 PMAQI
1st Aug 2026272 PMAQI
1st Aug 2026343 PMAQI
1st Aug 2026364 PMAQI
1st Aug 2026365 PMAQI
1st Aug 2026366 PMAQI
1st Aug 2026347 PMAQI
1st Aug 2026308 PMAQI
1st Aug 2026509 PMAQI
1st Aug 20264810 PMAQI
1st Aug 20264011 PMAQI
2nd Aug 20264612 AMAQI
2nd Aug 2026461 AMAQI
2nd Aug 2026382 AMAQI
2nd Aug 2026443 AMAQI

22°C19/25°C

2nd Aug 2026364 AMAQI
2nd Aug 2026405 AMAQI
2nd Aug 2026336 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026408 AMAQI
2nd Aug 2026449 AMAQI
2nd Aug 20263810 AMAQI
2nd Aug 20263111 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026361 PMAQI
2nd Aug 2026342 PMAQI
2nd Aug 2026213 PMAQI
2nd Aug 2026364 PMAQI
2nd Aug 2026125 PMAQI
2nd Aug 2026216 PMAQI
2nd Aug 2026197 PMAQI
2nd Aug 2026198 PMAQI
2nd Aug 2026199 PMAQI
2nd Aug 20261210 PMAQI
2nd Aug 20261711 PMAQI
3rd Aug 20261212 AMAQI
3rd Aug 2026171 AMAQI
3rd Aug 202682 AMAQI
3rd Aug 2026143 AMAQI

20°C18/22°C

3rd Aug 2026144 AMAQI
3rd Aug 2026295 AMAQI
3rd Aug 2026196 AMAQI
3rd Aug 2026177 AMAQI
3rd Aug 2026218 AMAQI
3rd Aug 2026179 AMAQI
3rd Aug 20261410 AMAQI
3rd Aug 20261211 AMAQI
3rd Aug 2026812 PMAQI
3rd Aug 2026141 PMAQI
3rd Aug 2026212 PMAQI
3rd Aug 202683 PMAQI
3rd Aug 2026194 PMAQI
3rd Aug 2026145 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026317 PMAQI
3rd Aug 2026218 PMAQI
3rd Aug 2026319 PMAQI
3rd Aug 20262310 PMAQI
3rd Aug 20263311 PMAQI
4th Aug 20262512 AMAQI
4th Aug 2026401 AMAQI
4th Aug 2026272 AMAQI
4th Aug 2026333 AMAQI

18°C14/21°C

4th Aug 2026254 AMAQI
4th Aug 2026295 AMAQI
4th Aug 2026336 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026309 AMAQI
4th Aug 20263810 AMAQI
4th Aug 20264411 AMAQI
4th Aug 20265012 PMAQI
4th Aug 2026531 PMAQI
4th Aug 2026512 PMAQI
4th Aug 2026463 PMAQI
4th Aug 2026384 PMAQI
4th Aug 2026515 PMAQI
4th Aug 2026336 PMAQI
4th Aug 2026427 PMAQI
4th Aug 2026428 PMAQI
4th Aug 2026519 PMAQI
4th Aug 20264610 PMAQI
4th Aug 20265011 PMAQI
5th Aug 20264012 AMAQI
5th Aug 2026401 AMAQI
5th Aug 2026442 AMAQI
5th Aug 2026423 AMAQI

18°C12/26°C

5th Aug 2026364 AMAQI
5th Aug 2026345 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026327 AMAQI
5th Aug 2026328 AMAQI
5th Aug 2026299 AMAQI
5th Aug 20263810 AMAQI
5th Aug 20262711 AMAQI
5th Aug 20263612 PMAQI
5th Aug 2026331 PMAQI
5th Aug 2026382 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026344 PMAQI
5th Aug 2026465 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026307 PMAQI
5th Aug 2026428 PMAQI
5th Aug 2026339 PMAQI
5th Aug 20264810 PMAQI
5th Aug 20265511 PMAQI
6th Aug 20264612 AMAQI
6th Aug 2026461 AMAQI
6th Aug 2026362 AMAQI
6th Aug 2026233 AMAQI

21°C12/30°C

6th Aug 2026234 AMAQI
6th Aug 2026305 AMAQI
6th Aug 2026406 AMAQI
6th Aug 2026487 AMAQI
6th Aug 2026498 AMAQI
6th Aug 2026429 AMAQI
6th Aug 20264010 AMAQI
6th Aug 20264611 AMAQI
6th Aug 20264412 PMAQI
6th Aug 2026441 PMAQI
6th Aug 2026422 PMAQI
6th Aug 2026383 PMAQI
6th Aug 2026364 PMAQI
6th Aug 2026325 PMAQI
6th Aug 2026346 PMAQI
6th Aug 2026277 PMAQI
6th Aug 2026298 PMAQI
6th Aug 2026339 PMAQI
6th Aug 20264210 PMAQI
6th Aug 20263411 PMAQI
7th Aug 20265712 AMAQI
7th Aug 2026581 AMAQI
7th Aug 2026452 AMAQI
7th Aug 2026483 AMAQI

24°C16/31°C

7th Aug 2026494 AMAQI
7th Aug 2026485 AMAQI
7th Aug 2026386 AMAQI
7th Aug 2026467 AMAQI
7th Aug 2026318 AMAQI
7th Aug 2026339 AMAQI
7th Aug 20262310 AMAQI
7th Aug 20263411 AMAQI
7th Aug 20262612 PMAQI
7th Aug 2026441 PMAQI
7th Aug 2026622 PMAQI
7th Aug 2026403 PMAQI
7th Aug 2026324 PMAQI
7th Aug 2026255 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026367 PMAQI
7th Aug 2026318 PMAQI
7th Aug 2026319 PMAQI
7th Aug 20264010 PMAQI
7th Aug 20264011 PMAQI
8th Aug 20263212 AMAQI
8th Aug 2026361 AMAQI
8th Aug 2026382 AMAQI
8th Aug 2026313 AMAQI

25°C20/31°C

8th Aug 2026294 AMAQI
8th Aug 2026335 AMAQI
8th Aug 2026276 AMAQI
8th Aug 2026307 AMAQI
8th Aug 2026388 AMAQI
8th Aug 2026329 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20262511 AMAQI
8th Aug 20263812 PMAQI
8th Aug 2026311 PMAQI
8th Aug 2026362 PMAQI
8th Aug 2026423 PMAQI
8th Aug 2026454 PMAQI
8th Aug 2026345 PMAQI
8th Aug 2026276 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026298 PMAQI
8th Aug 2026259 PMAQI
8th Aug 20262410 PMAQI
8th Aug 20263411 PMAQI
9th Aug 20263412 AMAQI
9th Aug 2026311 AMAQI
9th Aug 2026252 AMAQI
9th Aug 2026233 AMAQI

24°C19/31°C

9th Aug 2026254 AMAQI
9th Aug 2026235 AMAQI
9th Aug 2026256 AMAQI
9th Aug 2026277 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026329 AMAQI
9th Aug 20263610 AMAQI
9th Aug 20262511 AMAQI
9th Aug 20262512 PMAQI
9th Aug 2026291 PMAQI
9th Aug 2026312 PMAQI
9th Aug 2026273 PMAQI
9th Aug 2026254 PMAQI
9th Aug 2026345 PMAQI
9th Aug 2026256 PMAQI
9th Aug 2026257 PMAQI
9th Aug 2026258 PMAQI
9th Aug 2026279 PMAQI
9th Aug 20263810 PMAQI
9th Aug 20262911 PMAQI
10th Aug 20262912 AMAQI
10th Aug 2026251 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026363 AMAQI

23°C19/28°C

10th Aug 2026214 AMAQI
10th Aug 2026275 AMAQI
10th Aug 2026276 AMAQI
10th Aug 2026367 AMAQI
10th Aug 2026388 AMAQI
10th Aug 2026469 AMAQI
10th Aug 20264810 AMAQI
10th Aug 20264011 AMAQI
10th Aug 20264812 PMAQI
10th Aug 2026491 PMAQI
10th Aug 2026212 PMAQI
10th Aug 2026253 PMAQI
10th Aug 2026384 PMAQI
10th Aug 2026235 PMAQI
10th Aug 2026346 PMAQI
10th Aug 2026257 PMAQI
10th Aug 2026318 PMAQI
10th Aug 2026299 PMAQI
10th Aug 20262710 PMAQI
10th Aug 20264211 PMAQI
11th Aug 20264412 AMAQI
11th Aug 2026441 AMAQI
11th Aug 2026332 AMAQI
11th Aug 2026343 AMAQI

22°C17/28°C

11th Aug 2026364 AMAQI
11th Aug 2026425 AMAQI
11th Aug 2026486 AMAQI
11th Aug 2026447 AMAQI
11th Aug 2026468 AMAQI
11th Aug 2026409 AMAQI
11th Aug 20265710 AMAQI
11th Aug 20265611 AMAQI
11th Aug 20264912 PMAQI
11th Aug 2026481 PMAQI
11th Aug 2026442 PMAQI
11th Aug 2026253 PMAQI
11th Aug 2026344 PMAQI
11th Aug 2026345 PMAQI
11th Aug 2026236 PMAQI
11th Aug 2026317 PMAQI
11th Aug 2026238 PMAQI
11th Aug 2026299 PMAQI
11th Aug 20264810 PMAQI
11th Aug 20263411 PMAQI
12th Aug 20263112 AMAQI
12th Aug 2026401 AMAQI
12th Aug 2026332 AMAQI
12th Aug 2026363 AMAQI

18°C14/21°C

12th Aug 2026324 AMAQI
12th Aug 2026345 AMAQI
12th Aug 2026386 AMAQI
12th Aug 2026367 AMAQI
12th Aug 2026278 AMAQI
12th Aug 2026389 AMAQI
12th Aug 20264610 AMAQI
12th Aug 20263311 AMAQI
12th Aug 20265312 PMAQI
12th Aug 2026501 PMAQI
12th Aug 2026472 PMAQI
12th Aug 2026443 PMAQI
12th Aug 2026364 PMAQI
12th Aug 2026445 PMAQI
12th Aug 2026476 PMAQI
12th Aug 2026517 PMAQI
12th Aug 2026388 PMAQI
12th Aug 2026499 PMAQI
12th Aug 20264410 PMAQI
12th Aug 20262511 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026271 AMAQI
13th Aug 2026232 AMAQI
13th Aug 2026363 AMAQI

22°C19/24°C

13th Aug 2026274 AMAQI
13th Aug 2026275 AMAQI
13th Aug 2026316 AMAQI
13th Aug 2026277 AMAQI
13th Aug 2026278 AMAQI
13th Aug 2026389 AMAQI
13th Aug 20265210 AMAQI
13th Aug 20264611 AMAQI
13th Aug 20264212 PMAQI
13th Aug 2026341 PMAQI
13th Aug 2026422 PMAQI
13th Aug 2026313 PMAQI
13th Aug 2026364 PMAQI
13th Aug 2026245 PMAQI
13th Aug 2026266 PMAQI
13th Aug 2026267 PMAQI
13th Aug 2026338 PMAQI
13th Aug 2026269 PMAQI
13th Aug 20262710 PMAQI
13th Aug 20262911 PMAQI
14th Aug 20262712 AMAQI
14th Aug 2026251 AMAQI
14th Aug 2026272 AMAQI
14th Aug 2026343 AMAQI

22°C20/27°C

14th Aug 2026274 AMAQI
14th Aug 2026215 AMAQI
14th Aug 2026256 AMAQI
14th Aug 2026237 AMAQI
14th Aug 2026218 AMAQI
14th Aug 2026209 AMAQI
14th Aug 20263410 AMAQI
14th Aug 20264611 AMAQI
14th Aug 20264012 PMAQI
14th Aug 2026381 PMAQI
14th Aug 2026362 PMAQI
14th Aug 2026313 PMAQI
14th Aug 2026294 PMAQI
14th Aug 2026235 PMAQI
14th Aug 2026296 PMAQI
14th Aug 2026367 PMAQI
14th Aug 2026308 PMAQI
14th Aug 2026239 PMAQI
14th Aug 20262910 PMAQI
14th Aug 20263811 PMAQI
15th Aug 20262112 AMAQI
15th Aug 2026301 AMAQI
15th Aug 2026402 AMAQI
15th Aug 2026343 AMAQI

23°C20/28°C

15th Aug 2026274 AMAQI
4 AM
15th Aug 2026275 AMAQI
15th Aug 2026296 AMAQI
15th Aug 2026297 AMAQI
15th Aug 2026368 AMAQI
15th Aug 2026239 AMAQI
15th Aug 20264210 AMAQI
15th Aug 20264211 AMAQI
11 AM
15th Aug 20262912 PMAQI
15th Aug 2026331 PMAQI
15th Aug 2026342 PMAQI
15th Aug 2026273 PMAQI
15th Aug 2026254 PMAQI
15th Aug 2026305 PMAQI
15th Aug 2026406 PMAQI
6 PM
15th Aug 2026427 PMAQI
15th Aug 2026538 PMAQI
15th Aug 2026529 PMAQI
15th Aug 20264010 PMAQI
15th Aug 20262711 PMAQI
11 PM
3 AM

22°C18/26°C

Day time
Avg. Highest Time
2 PM

40AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
4 AM

31AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 2 PM (Avg. 40), while the lowest AQI was between 4 AM to 4 AM (Avg. 31).
Night time
Avg. Highest Time
10 PM - 11 PM

38AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
2 AM

32AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 11 PM (Avg. 38), while the lowest AQI was between 2 AM to 2 AM (Avg. 32).

2026 Days Vs Air Quality

Oinomori, Tendo, Yamagata, Japan

2026

84%

190

16%

37

Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)

Good
190 Days
Moderate
37 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2026, 84% of 227 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

Oinomori, Tendo, Yamagata, 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
19AQI (US)
2nd January 2026
18AQI (US)
3rd January 2026
21AQI (US)
4th January 2026
20AQI (US)
5th January 2026
26AQI (US)
6th January 2026
21AQI (US)
7th January 2026
30AQI (US)
8th January 2026
24AQI (US)
9th January 2026
20AQI (US)
10th January 2026
25AQI (US)
11th January 2026
21AQI (US)
12th January 2026
22AQI (US)
13th January 2026
20AQI (US)
14th January 2026
16AQI (US)
15th January 2026
21AQI (US)
16th January 2026
27AQI (US)
17th January 2026
39AQI (US)
18th January 2026
24AQI (US)
19th January 2026
27AQI (US)
20th January 2026
28AQI (US)
21st January 2026
19AQI (US)
22nd January 2026
26AQI (US)
23rd January 2026
47AQI (US)
24th January 2026
41AQI (US)
25th January 2026
41AQI (US)
26th January 2026
34AQI (US)
27th January 2026
41AQI (US)
28th January 2026
15AQI (US)
29th January 2026
13AQI (US)
30th January 2026
32AQI (US)
31st January 2026
41AQI (US)
1st February 2026
35AQI (US)
2nd February 2026
39AQI (US)
3rd February 2026
32AQI (US)
4th February 2026
20AQI (US)
5th February 2026
18AQI (US)
6th February 2026
32AQI (US)
7th February 2026
18AQI (US)
8th February 2026
23AQI (US)
9th February 2026
43AQI (US)
10th February 2026
55AQI (US)
11th February 2026
65AQI (US)
12th February 2026
27AQI (US)
13th February 2026
28AQI (US)
14th February 2026
73AQI (US)
15th February 2026
51AQI (US)
16th February 2026
41AQI (US)
17th February 2026
20AQI (US)
18th February 2026
31AQI (US)
19th February 2026
31AQI (US)
20th February 2026
32AQI (US)
21st February 2026
49AQI (US)
22nd February 2026
43AQI (US)
23rd February 2026
47AQI (US)
24th February 2026
36AQI (US)
25th February 2026
38AQI (US)
26th February 2026
34AQI (US)
27th February 2026
42AQI (US)
28th February 2026
44AQI (US)
1st March 2026
52AQI (US)
2nd March 2026
89AQI (US)
3rd March 2026
56AQI (US)
4th March 2026
76AQI (US)
5th March 2026
68AQI (US)
6th March 2026
59AQI (US)
7th March 2026
49AQI (US)
8th March 2026
54AQI (US)
9th March 2026
53AQI (US)
10th March 2026
56AQI (US)
11th March 2026
56AQI (US)
12th March 2026
71AQI (US)
13th March 2026
49AQI (US)
14th March 2026
50AQI (US)
15th March 2026
62AQI (US)
16th March 2026
66AQI (US)
17th March 2026
64AQI (US)
18th March 2026
59AQI (US)
19th March 2026
43AQI (US)
20th March 2026
25AQI (US)
21st March 2026
49AQI (US)
22nd March 2026
43AQI (US)
23rd March 2026
43AQI (US)
24th March 2026
65AQI (US)
25th March 2026
62AQI (US)
26th March 2026
38AQI (US)
27th March 2026
17AQI (US)
28th March 2026
47AQI (US)
29th March 2026
70AQI (US)
30th March 2026
60AQI (US)
31st March 2026
47AQI (US)
1st April 2026
23AQI (US)
2nd April 2026
23AQI (US)
3rd April 2026
49AQI (US)
4th April 2026
49AQI (US)
5th April 2026
20AQI (US)
6th April 2026
18AQI (US)
7th April 2026
26AQI (US)
8th April 2026
26AQI (US)
9th April 2026
43AQI (US)
10th April 2026
45AQI (US)
11th April 2026
38AQI (US)
12th April 2026
33AQI (US)
13th April 2026
36AQI (US)
14th April 2026
45AQI (US)
15th April 2026
49AQI (US)
16th April 2026
32AQI (US)
17th April 2026
40AQI (US)
18th April 2026
38AQI (US)
19th April 2026
40AQI (US)
20th April 2026
38AQI (US)
21st April 2026
46AQI (US)
22nd April 2026
25AQI (US)
23rd April 2026
22AQI (US)
24th April 2026
32AQI (US)
25th April 2026
47AQI (US)
26th April 2026
47AQI (US)
27th April 2026
46AQI (US)
28th April 2026
38AQI (US)
29th April 2026
31AQI (US)
30th April 2026
41AQI (US)
1st May 2026
51AQI (US)
2nd May 2026
52AQI (US)
3rd May 2026
39AQI (US)
4th May 2026
31AQI (US)
5th May 2026
27AQI (US)
6th May 2026
37AQI (US)
7th May 2026
34AQI (US)
8th May 2026
26AQI (US)
9th May 2026
30AQI (US)
10th May 2026
38AQI (US)
11th May 2026
37AQI (US)
12th May 2026
42AQI (US)
13th May 2026
46AQI (US)
14th May 2026
40AQI (US)
15th May 2026
39AQI (US)
16th May 2026
85AQI (US)
17th May 2026
68AQI (US)
18th May 2026
54AQI (US)
19th May 2026
49AQI (US)
20th May 2026
61AQI (US)
21st May 2026
61AQI (US)
22nd May 2026
65AQI (US)
23rd May 2026
56AQI (US)
24th May 2026
60AQI (US)
25th May 2026
51AQI (US)
26th May 2026
41AQI (US)
27th May 2026
26AQI (US)
28th May 2026
25AQI (US)
29th May 2026
24AQI (US)
30th May 2026
24AQI (US)
31st May 2026
27AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
35AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
15AQI (US)
5th June 2026
22AQI (US)
6th June 2026
23AQI (US)
7th June 2026
21AQI (US)
8th June 2026
20AQI (US)
9th June 2026
22AQI (US)
10th June 2026
21AQI (US)
11th June 2026
24AQI (US)
12th June 2026
24AQI (US)
13th June 2026
25AQI (US)
14th June 2026
24AQI (US)
15th June 2026
24AQI (US)
16th June 2026
26AQI (US)
17th June 2026
25AQI (US)
18th June 2026
27AQI (US)
19th June 2026
30AQI (US)
20th June 2026
21AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
21AQI (US)
25th June 2026
27AQI (US)
26th June 2026
29AQI (US)
27th June 2026
27AQI (US)
28th June 2026
29AQI (US)
29th June 2026
28AQI (US)
30th June 2026
24AQI (US)
1st July 2026
24AQI (US)
2nd July 2026
24AQI (US)
3rd July 2026
23AQI (US)
4th July 2026
24AQI (US)
5th July 2026
22AQI (US)
6th July 2026
24AQI (US)
7th July 2026
26AQI (US)
8th July 2026
25AQI (US)
9th July 2026
25AQI (US)
10th July 2026
28AQI (US)
11th July 2026
30AQI (US)
12th July 2026
27AQI (US)
13th July 2026
17AQI (US)
14th July 2026
27AQI (US)
15th July 2026
25AQI (US)
16th July 2026
25AQI (US)
17th July 2026
25AQI (US)
18th July 2026
26AQI (US)
19th July 2026
34AQI (US)
20th July 2026
63AQI (US)
21st July 2026
55AQI (US)
22nd July 2026
54AQI (US)
23rd July 2026
27AQI (US)
24th July 2026
28AQI (US)
25th July 2026
36AQI (US)
26th July 2026
33AQI (US)
27th July 2026
34AQI (US)
28th July 2026
36AQI (US)
29th July 2026
37AQI (US)
30th July 2026
34AQI (US)
31st July 2026
32AQI (US)
1st August 2026
39AQI (US)
2nd August 2026
32AQI (US)
3rd August 2026
18AQI (US)
4th August 2026
39AQI (US)
5th August 2026
37AQI (US)
6th August 2026
38AQI (US)
7th August 2026
39AQI (US)
8th August 2026
32AQI (US)
9th August 2026
28AQI (US)
10th August 2026
33AQI (US)
11th August 2026
39AQI (US)
12th August 2026
40AQI (US)
13th August 2026
32AQI (US)
14th August 2026
30AQI (US)
15th August 2026
34AQI (US)
16th August 2026
17th August 2026
18th August 2026
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

26AQI (US)

37AQI (US)

55AQI (US)

36AQI (US)

43AQI (US)

24AQI (US)

31AQI (US)

34AQI (US)

No. of days

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

202636AQI (US)

31
24
4
12
19
30
20
11
30
28
3
15
190
37

Highest AQI (US) recorded in

March

55AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202538AQI (US)

31
27
1
27
4
28
2
28
3
24
6
21
10
30
1
30
14
17
26
4
29
2
315
50

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

February

29AQI (US)

202432AQI (US)

17
3
6
2
1
12
26
4
26
5
31
24
5
30
1
27
3
31
235
19

Highest AQI (US) recorded in

April

44AQI (US)

Lowest AQI (US) recorded in

January

16AQI (US)

202320AQI (US)

3
31
34

Highest AQI (US) recorded in

December

21AQI (US)

Lowest AQI (US) recorded in

November

13AQI (US)

202024AQI (US)

13
6
1
1
20
1

Highest AQI (US) recorded in

September

43AQI (US)

Lowest AQI (US) recorded in

April

2AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2025(Avg.)
38AQI (US)
Least Polluted Year Recorded
2023(Avg.)
20AQI (US)

Oinomori's annual 2026 AQI (US) (36) shows an average percentage change of 34.3% (worsened AQI (US)) compared to previous years: 2020 (24), 2023 (20), 2024 (32), 2025 (38).