Oyama, Tochigi, 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
Oyama, Tochigi, Japan
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
14th Aug 2024
45AQILowest AQI recorded on
30th Aug 2024
20AQISame Day Analysis (1st August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Oyama, Tochigi, Japan
AQI
Day
Night
.
4 AM3rd Aug 2025
6 PM
3 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM3rd Aug
59AQI
Avg. Lowest Time
8AM3rd Aug
39AQI
In the last 24 hours,
Oyama's AQI reached its highest point of 59 at 12 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Oyama, Tochigi, Japan
JulAug
05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025384 AMAQI
5th Jul 2025395 AMAQI
5th Jul 2025396 AMAQI
5th Jul 2025387 AMAQI
5th Jul 2025388 AMAQI
5th Jul 2025509 AMAQI
5th Jul 20255610 AMAQI
5th Jul 20255711 AMAQI
5th Jul 20255812 PMAQI
5th Jul 2025591 PMAQI
5th Jul 2025582 PMAQI
5th Jul 2025603 PMAQI
5th Jul 2025624 PMAQI
5th Jul 2025645 PMAQI
5th Jul 2025666 PMAQI
5th Jul 2025687 PMAQI
5th Jul 2025648 PMAQI
5th Jul 2025569 PMAQI
5th Jul 20255610 PMAQI
5th Jul 20255611 PMAQI
6th Jul 20255512 AMAQI
6th Jul 2025471 AMAQI
6th Jul 2025402 AMAQI
6th Jul 2025393 AMAQI
29°C26/33°C
6th Jul 2025404 AMAQI
6th Jul 2025435 AMAQI
6th Jul 2025436 AMAQI
6th Jul 2025437 AMAQI
6th Jul 2025438 AMAQI
6th Jul 2025549 AMAQI
6th Jul 20257010 AMAQI
6th Jul 20257511 AMAQI
6th Jul 20257312 PMAQI
6th Jul 2025721 PMAQI
6th Jul 2025732 PMAQI
6th Jul 2025743 PMAQI
6th Jul 2025784 PMAQI
6th Jul 2025805 PMAQI
6th Jul 2025836 PMAQI
6th Jul 2025857 PMAQI
6th Jul 2025818 PMAQI
6th Jul 2025659 PMAQI
6th Jul 20256510 PMAQI
6th Jul 20256611 PMAQI
7th Jul 20256512 AMAQI
7th Jul 2025581 AMAQI
7th Jul 2025482 AMAQI
7th Jul 2025473 AMAQI
30°C25/36°C
7th Jul 2025504 AMAQI
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025547 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025989 AMAQI
7th Jul 202511510 AMAQI
7th Jul 202511911 AMAQI
7th Jul 202511612 PMAQI
7th Jul 2025981 PMAQI
7th Jul 2025872 PMAQI
7th Jul 2025663 PMAQI
7th Jul 2025684 PMAQI
7th Jul 2025795 PMAQI
7th Jul 2025966 PMAQI
7th Jul 20251057 PMAQI
7th Jul 2025958 PMAQI
7th Jul 2025759 PMAQI
7th Jul 20257610 PMAQI
7th Jul 20257511 PMAQI
8th Jul 20257512 AMAQI
8th Jul 2025671 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025563 AMAQI
31°C27/35°C
8th Jul 2025584 AMAQI
8th Jul 2025635 AMAQI
8th Jul 2025636 AMAQI
8th Jul 2025637 AMAQI
8th Jul 2025638 AMAQI
8th Jul 20251019 AMAQI
8th Jul 202511010 AMAQI
8th Jul 202510511 AMAQI
8th Jul 202510012 PMAQI
8th Jul 2025911 PMAQI
8th Jul 2025722 PMAQI
8th Jul 2025683 PMAQI
8th Jul 2025684 PMAQI
8th Jul 2025685 PMAQI
8th Jul 2025746 PMAQI
8th Jul 2025867 PMAQI
8th Jul 2025848 PMAQI
8th Jul 2025759 PMAQI
8th Jul 20257710 PMAQI
8th Jul 20257811 PMAQI
9th Jul 20257812 AMAQI
9th Jul 2025741 AMAQI
9th Jul 2025642 AMAQI
9th Jul 2025643 AMAQI
31°C27/36°C
9th Jul 2025664 AMAQI
9th Jul 2025705 AMAQI
9th Jul 2025716 AMAQI
9th Jul 2025717 AMAQI
9th Jul 2025708 AMAQI
9th Jul 2025809 AMAQI
9th Jul 20258910 AMAQI
9th Jul 20259611 AMAQI
9th Jul 20259912 PMAQI
9th Jul 2025941 PMAQI
9th Jul 2025852 PMAQI
9th Jul 2025623 PMAQI
9th Jul 2025604 PMAQI
9th Jul 2025625 PMAQI
9th Jul 2025666 PMAQI
9th Jul 2025627 PMAQI
9th Jul 2025618 PMAQI
9th Jul 2025629 PMAQI
9th Jul 20256210 PMAQI
9th Jul 20256111 PMAQI
10th Jul 20256112 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025702 AMAQI
10th Jul 2025703 AMAQI
31°C27/37°C
10th Jul 2025714 AMAQI
10th Jul 2025745 AMAQI
10th Jul 2025746 AMAQI
10th Jul 2025747 AMAQI
10th Jul 2025748 AMAQI
10th Jul 2025389 AMAQI
10th Jul 20252810 AMAQI
10th Jul 20253711 AMAQI
10th Jul 20253912 PMAQI
10th Jul 2025471 PMAQI
10th Jul 2025452 PMAQI
10th Jul 2025423 PMAQI
10th Jul 2025404 PMAQI
10th Jul 2025385 PMAQI
10th Jul 2025366 PMAQI
10th Jul 2025357 PMAQI
10th Jul 2025428 PMAQI
10th Jul 2025589 PMAQI
10th Jul 20255910 PMAQI
10th Jul 20255911 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025682 AMAQI
11th Jul 2025693 AMAQI
28°C23/36°C
11th Jul 2025684 AMAQI
11th Jul 2025655 AMAQI
11th Jul 2025656 AMAQI
11th Jul 2025657 AMAQI
11th Jul 2025658 AMAQI
11th Jul 2025339 AMAQI
11th Jul 20252010 AMAQI
11th Jul 20252111 AMAQI
11th Jul 20252412 PMAQI
11th Jul 2025351 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025383 PMAQI
11th Jul 2025374 PMAQI
11th Jul 2025365 PMAQI
11th Jul 2025356 PMAQI
11th Jul 2025357 PMAQI
11th Jul 2025458 PMAQI
11th Jul 2025569 PMAQI
11th Jul 20255710 PMAQI
11th Jul 20255711 PMAQI
12th Jul 20255712 AMAQI
12th Jul 2025601 AMAQI
12th Jul 2025642 AMAQI
12th Jul 2025653 AMAQI
22°C21/24°C
12th Jul 2025634 AMAQI
12th Jul 2025605 AMAQI
12th Jul 2025606 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025608 AMAQI
12th Jul 2025409 AMAQI
12th Jul 20253710 AMAQI
12th Jul 20254111 AMAQI
12th Jul 20254512 PMAQI
12th Jul 2025481 PMAQI
12th Jul 2025482 PMAQI
12th Jul 2025473 PMAQI
12th Jul 2025494 PMAQI
12th Jul 2025495 PMAQI
12th Jul 2025476 PMAQI
12th Jul 2025477 PMAQI
12th Jul 2025498 PMAQI
12th Jul 2025559 PMAQI
12th Jul 20255510 PMAQI
12th Jul 20255511 PMAQI
13th Jul 20255512 AMAQI
13th Jul 2025571 AMAQI
13th Jul 2025602 AMAQI
13th Jul 2025613 AMAQI
23°C21/27°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025529 AMAQI
13th Jul 20254710 AMAQI
13th Jul 20254711 AMAQI
13th Jul 20254712 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025492 PMAQI
13th Jul 2025463 PMAQI
13th Jul 2025454 PMAQI
13th Jul 2025435 PMAQI
13th Jul 2025406 PMAQI
13th Jul 2025357 PMAQI
13th Jul 2025418 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255210 PMAQI
13th Jul 20255211 PMAQI
14th Jul 20255112 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025583 AMAQI
26°C22/31°C
14th Jul 2025574 AMAQI
14th Jul 2025575 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025299 AMAQI
14th Jul 20252210 AMAQI
14th Jul 20252111 AMAQI
14th Jul 20251912 PMAQI
14th Jul 2025251 PMAQI
14th Jul 2025252 PMAQI
14th Jul 2025233 PMAQI
14th Jul 2025224 PMAQI
14th Jul 2025255 PMAQI
14th Jul 2025286 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025489 PMAQI
14th Jul 20254810 PMAQI
14th Jul 20254911 PMAQI
15th Jul 20255012 AMAQI
15th Jul 2025531 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
25°C23/28°C
15th Jul 2025554 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025538 AMAQI
15th Jul 2025309 AMAQI
15th Jul 20252010 AMAQI
15th Jul 20252611 AMAQI
15th Jul 20253112 PMAQI
15th Jul 2025341 PMAQI
15th Jul 2025362 PMAQI
15th Jul 2025313 PMAQI
15th Jul 2025274 PMAQI
15th Jul 2025315 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025358 PMAQI
15th Jul 2025449 PMAQI
15th Jul 20254610 PMAQI
15th Jul 20254611 PMAQI
16th Jul 20254912 AMAQI
16th Jul 2025511 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025533 AMAQI
27°C25/30°C
16th Jul 2025534 AMAQI
16th Jul 2025515 AMAQI
16th Jul 2025516 AMAQI
16th Jul 2025517 AMAQI
16th Jul 2025518 AMAQI
16th Jul 2025449 AMAQI
16th Jul 20253810 AMAQI
16th Jul 20253311 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025331 PMAQI
16th Jul 2025272 PMAQI
16th Jul 2025303 PMAQI
16th Jul 2025294 PMAQI
16th Jul 2025285 PMAQI
16th Jul 2025276 PMAQI
16th Jul 2025247 PMAQI
16th Jul 2025318 PMAQI
16th Jul 2025429 PMAQI
16th Jul 20254210 PMAQI
16th Jul 20254211 PMAQI
17th Jul 20254412 AMAQI
17th Jul 2025481 AMAQI
17th Jul 2025512 AMAQI
17th Jul 2025513 AMAQI
28°C25/30°C
17th Jul 2025514 AMAQI
17th Jul 2025505 AMAQI
17th Jul 2025506 AMAQI
17th Jul 2025497 AMAQI
17th Jul 2025508 AMAQI
17th Jul 2025359 AMAQI
17th Jul 20253210 AMAQI
17th Jul 20253611 AMAQI
17th Jul 20253512 PMAQI
17th Jul 2025371 PMAQI
17th Jul 2025372 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025354 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025356 PMAQI
17th Jul 2025377 PMAQI
17th Jul 2025408 PMAQI
17th Jul 2025439 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254211 PMAQI
18th Jul 20254212 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025502 AMAQI
18th Jul 2025503 AMAQI
29°C26/33°C
18th Jul 2025494 AMAQI
18th Jul 2025475 AMAQI
18th Jul 2025476 AMAQI
18th Jul 2025477 AMAQI
18th Jul 2025468 AMAQI
18th Jul 2025309 AMAQI
18th Jul 20252110 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025302 PMAQI
18th Jul 2025273 PMAQI
18th Jul 2025274 PMAQI
18th Jul 2025255 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025257 PMAQI
18th Jul 2025308 PMAQI
18th Jul 2025389 PMAQI
18th Jul 20253810 PMAQI
18th Jul 20253911 PMAQI
19th Jul 20253912 AMAQI
19th Jul 2025431 AMAQI
19th Jul 2025472 AMAQI
19th Jul 2025473 AMAQI
28°C25/33°C
19th Jul 2025464 AMAQI
19th Jul 2025445 AMAQI
19th Jul 2025446 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025299 AMAQI
19th Jul 20252410 AMAQI
19th Jul 20252511 AMAQI
19th Jul 20252312 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025242 PMAQI
19th Jul 2025213 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025215 PMAQI
19th Jul 2025196 PMAQI
19th Jul 2025207 PMAQI
19th Jul 2025248 PMAQI
19th Jul 2025329 PMAQI
19th Jul 20253310 PMAQI
19th Jul 20253111 PMAQI
20th Jul 20253212 AMAQI
20th Jul 2025391 AMAQI
20th Jul 2025452 AMAQI
20th Jul 2025453 AMAQI
29°C25/34°C
20th Jul 2025434 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025416 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252312 PMAQI
20th Jul 2025271 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025233 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025226 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025308 PMAQI
20th Jul 2025349 PMAQI
20th Jul 20253310 PMAQI
20th Jul 20253311 PMAQI
21st Jul 20253312 AMAQI
21st Jul 2025361 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025413 AMAQI
30°C26/36°C
21st Jul 2025404 AMAQI
21st Jul 2025375 AMAQI
21st Jul 2025376 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025279 AMAQI
21st Jul 20252510 AMAQI
21st Jul 20253111 AMAQI
21st Jul 20253412 PMAQI
21st Jul 2025341 PMAQI
21st Jul 2025322 PMAQI
21st Jul 2025313 PMAQI
21st Jul 2025324 PMAQI
21st Jul 2025335 PMAQI
21st Jul 2025316 PMAQI
21st Jul 2025307 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20252911 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025351 AMAQI
22nd Jul 2025382 AMAQI
22nd Jul 2025383 AMAQI
31°C26/38°C
22nd Jul 2025384 AMAQI
22nd Jul 2025375 AMAQI
22nd Jul 2025366 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025289 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20253111 AMAQI
22nd Jul 20253212 PMAQI
22nd Jul 2025321 PMAQI
22nd Jul 2025312 PMAQI
22nd Jul 2025313 PMAQI
22nd Jul 2025304 PMAQI
22nd Jul 2025295 PMAQI
22nd Jul 2025256 PMAQI
22nd Jul 2025257 PMAQI
22nd Jul 2025278 PMAQI
22nd Jul 2025289 PMAQI
22nd Jul 20252810 PMAQI
22nd Jul 20252811 PMAQI
23rd Jul 20252812 AMAQI
23rd Jul 2025321 AMAQI
23rd Jul 2025372 AMAQI
23rd Jul 2025363 AMAQI
31°C27/38°C
23rd Jul 2025364 AMAQI
23rd Jul 2025355 AMAQI
23rd Jul 2025356 AMAQI
23rd Jul 2025367 AMAQI
23rd Jul 2025358 AMAQI
23rd Jul 2025249 AMAQI
23rd Jul 20252210 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20253312 PMAQI
23rd Jul 2025341 PMAQI
23rd Jul 2025332 PMAQI
23rd Jul 2025323 PMAQI
23rd Jul 2025324 PMAQI
23rd Jul 2025315 PMAQI
23rd Jul 2025316 PMAQI
23rd Jul 2025307 PMAQI
23rd Jul 2025308 PMAQI
23rd Jul 2025319 PMAQI
23rd Jul 20253110 PMAQI
23rd Jul 20253211 PMAQI
24th Jul 20253112 AMAQI
24th Jul 2025321 AMAQI
24th Jul 2025342 AMAQI
24th Jul 2025353 AMAQI
31°C26/38°C
24th Jul 2025344 AMAQI
24th Jul 2025345 AMAQI
24th Jul 2025346 AMAQI
24th Jul 2025347 AMAQI
24th Jul 2025348 AMAQI
24th Jul 2025349 AMAQI
24th Jul 20254110 AMAQI
24th Jul 20254411 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025411 PMAQI
24th Jul 2025342 PMAQI
24th Jul 2025313 PMAQI
24th Jul 2025304 PMAQI
24th Jul 2025305 PMAQI
24th Jul 2025306 PMAQI
24th Jul 2025297 PMAQI
24th Jul 2025308 PMAQI
24th Jul 2025319 PMAQI
24th Jul 20253210 PMAQI
24th Jul 20253211 PMAQI
25th Jul 20253012 AMAQI
25th Jul 2025311 AMAQI
25th Jul 2025342 AMAQI
25th Jul 2025353 AMAQI
32°C26/38°C
25th Jul 2025354 AMAQI
25th Jul 2025375 AMAQI
25th Jul 2025366 AMAQI
25th Jul 2025367 AMAQI
25th Jul 2025368 AMAQI
25th Jul 2025319 AMAQI
25th Jul 20253010 AMAQI
25th Jul 20252911 AMAQI
25th Jul 20253112 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025302 PMAQI
25th Jul 2025293 PMAQI
25th Jul 2025304 PMAQI
25th Jul 2025285 PMAQI
25th Jul 2025276 PMAQI
25th Jul 2025277 PMAQI
25th Jul 2025288 PMAQI
25th Jul 2025309 PMAQI
25th Jul 20253110 PMAQI
25th Jul 20252811 PMAQI
26th Jul 20253012 AMAQI
26th Jul 2025331 AMAQI
26th Jul 2025352 AMAQI
26th Jul 2025353 AMAQI
31°C27/38°C
26th Jul 2025354 AMAQI
26th Jul 2025345 AMAQI
26th Jul 2025346 AMAQI
26th Jul 2025347 AMAQI
26th Jul 2025348 AMAQI
26th Jul 2025299 AMAQI
26th Jul 20252810 AMAQI
26th Jul 20253111 AMAQI
26th Jul 20253512 PMAQI
26th Jul 2025341 PMAQI
26th Jul 2025342 PMAQI
26th Jul 2025333 PMAQI
26th Jul 2025324 PMAQI
26th Jul 2025335 PMAQI
26th Jul 2025326 PMAQI
26th Jul 2025307 PMAQI
26th Jul 2025298 PMAQI
26th Jul 2025299 PMAQI
26th Jul 20252910 PMAQI
26th Jul 20253011 PMAQI
27th Jul 20252912 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025342 AMAQI
27th Jul 2025353 AMAQI
32°C27/38°C
27th Jul 2025354 AMAQI
27th Jul 2025355 AMAQI
27th Jul 2025356 AMAQI
27th Jul 2025347 AMAQI
27th Jul 2025348 AMAQI
27th Jul 2025319 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252811 AMAQI
27th Jul 20252712 PMAQI
27th Jul 2025271 PMAQI
27th Jul 2025282 PMAQI
27th Jul 2025263 PMAQI
27th Jul 2025284 PMAQI
27th Jul 2025295 PMAQI
27th Jul 2025286 PMAQI
27th Jul 2025267 PMAQI
27th Jul 2025268 PMAQI
27th Jul 2025289 PMAQI
27th Jul 20252710 PMAQI
27th Jul 20252611 PMAQI
28th Jul 20252712 AMAQI
28th Jul 2025301 AMAQI
28th Jul 2025342 AMAQI
28th Jul 2025343 AMAQI
32°C27/38°C
28th Jul 2025344 AMAQI
28th Jul 2025335 AMAQI
28th Jul 2025336 AMAQI
28th Jul 2025337 AMAQI
28th Jul 2025338 AMAQI
28th Jul 2025289 AMAQI
28th Jul 20253110 AMAQI
28th Jul 20253611 AMAQI
28th Jul 20254012 PMAQI
28th Jul 2025421 PMAQI
28th Jul 2025322 PMAQI
28th Jul 2025233 PMAQI
28th Jul 2025264 PMAQI
28th Jul 2025255 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025237 PMAQI
28th Jul 2025258 PMAQI
28th Jul 2025289 PMAQI
28th Jul 20252810 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025321 AMAQI
29th Jul 2025332 AMAQI
29th Jul 2025323 AMAQI
32°C27/39°C
29th Jul 2025334 AMAQI
29th Jul 2025335 AMAQI
29th Jul 2025336 AMAQI
29th Jul 2025337 AMAQI
29th Jul 2025338 AMAQI
29th Jul 2025319 AMAQI
29th Jul 20253310 AMAQI
29th Jul 20253911 AMAQI
29th Jul 20254812 PMAQI
29th Jul 2025511 PMAQI
29th Jul 2025472 PMAQI
29th Jul 2025453 PMAQI
29th Jul 2025364 PMAQI
29th Jul 2025295 PMAQI
29th Jul 2025266 PMAQI
29th Jul 2025237 PMAQI
29th Jul 2025238 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252510 PMAQI
29th Jul 20252511 PMAQI
30th Jul 20252512 AMAQI
30th Jul 2025271 AMAQI
30th Jul 2025322 AMAQI
30th Jul 2025333 AMAQI
32°C27/39°C
30th Jul 2025344 AMAQI
30th Jul 2025355 AMAQI
30th Jul 2025356 AMAQI
30th Jul 2025357 AMAQI
30th Jul 2025358 AMAQI
30th Jul 2025239 AMAQI
30th Jul 20252110 AMAQI
30th Jul 20252311 AMAQI
30th Jul 20252712 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025292 PMAQI
30th Jul 2025293 PMAQI
30th Jul 2025294 PMAQI
30th Jul 2025295 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025317 PMAQI
30th Jul 2025348 PMAQI
30th Jul 2025329 PMAQI
30th Jul 20253310 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253512 AMAQI
31st Jul 2025331 AMAQI
31st Jul 2025332 AMAQI
31st Jul 2025333 AMAQI
30°C26/36°C
31st Jul 2025324 AMAQI
31st Jul 2025325 AMAQI
31st Jul 2025326 AMAQI
31st Jul 2025327 AMAQI
31st Jul 2025328 AMAQI
31st Jul 2025329 AMAQI
31st Jul 20253210 AMAQI
31st Jul 20253811 AMAQI
31st Jul 20253912 PMAQI
31st Jul 2025361 PMAQI
31st Jul 2025332 PMAQI
31st Jul 2025303 PMAQI
31st Jul 2025314 PMAQI
31st Jul 2025285 PMAQI
31st Jul 2025256 PMAQI
31st Jul 2025217 PMAQI
31st Jul 2025288 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20253110 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20252812 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025312 AMAQI
1st Aug 2025333 AMAQI
29°C25/35°C
1st Aug 2025344 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025346 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025358 AMAQI
1st Aug 2025389 AMAQI
1st Aug 20252910 AMAQI
1st Aug 20254111 AMAQI
1st Aug 20254412 PMAQI
1st Aug 2025401 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025303 PMAQI
1st Aug 2025424 PMAQI
1st Aug 2025325 PMAQI
1st Aug 2025426 PMAQI
1st Aug 2025277 PMAQI
1st Aug 2025278 PMAQI
1st Aug 2025289 PMAQI
1st Aug 20253110 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20252912 AMAQI
2nd Aug 2025321 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025363 AMAQI
28°C25/32°C
2nd Aug 2025374 AMAQI
2nd Aug 2025385 AMAQI
2nd Aug 2025386 AMAQI
2nd Aug 2025377 AMAQI
2nd Aug 2025378 AMAQI
2nd Aug 2025359 AMAQI
2nd Aug 20253510 AMAQI
2nd Aug 20254411 AMAQI
2nd Aug 20254112 PMAQI
2nd Aug 2025491 PMAQI
2nd Aug 2025532 PMAQI
2nd Aug 2025553 PMAQI
2nd Aug 2025504 PMAQI
2nd Aug 2025495 PMAQI
2nd Aug 2025526 PMAQI
2nd Aug 2025527 PMAQI
2nd Aug 2025408 PMAQI
2nd Aug 2025379 PMAQI
2nd Aug 20253610 PMAQI
2nd Aug 20254011 PMAQI
3rd Aug 20253312 AMAQI
3rd Aug 2025351 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
31°C27/38°C
3rd Aug 2025404 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025396 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025398 AMAQI
3rd Aug 2025479 AMAQI
3rd Aug 20255410 AMAQI
3rd Aug 20255311 AMAQI
3rd Aug 20255912 PMAQI
3rd Aug 2025541 PMAQI
3rd Aug 2025582 PMAQI
3rd Aug 2025513 PMAQI
3rd Aug 2025484 PMAQI
3rd Aug 2025465 PMAQI
3rd Aug 2025526 PMAQI
3rd Aug 2025497 PMAQI
3rd Aug 2025478 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20254211 PMAQI
4th Aug 20254112 AMAQI
--°C/°C
4 AM
11 AM
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
45AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
3 PM - 6 PM
39AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 45), while the lowest AQI was between 3 PM to 6 PM (Avg. 39).
Night time
Avg. Highest Time
12 AM - 3 AM
44AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM - 11 PM
41AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 44), while the lowest AQI was between 7 PM to 11 PM (Avg. 41).
2025 Days Vs Air Quality
Oyama, Tochigi, Japan
2025
93%
198
7%
15
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
198 DaysModerate
15 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Oyama, Tochigi, 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.
1st January 2025
30AQI
30AQI
2nd January 2025
29AQI
29AQI
3rd January 2025
26AQI
26AQI
4th January 2025
25AQI
25AQI
5th January 2025
31AQI
31AQI
6th January 2025
50AQI
50AQI
7th January 2025
34AQI
34AQI
8th January 2025
36AQI
36AQI
9th January 2025
29AQI
29AQI
10th January 2025
29AQI
29AQI
11th January 2025
26AQI
26AQI
12th January 2025
38AQI
38AQI
13th January 2025
28AQI
28AQI
14th January 2025
36AQI
36AQI
15th January 2025
35AQI
35AQI
16th January 2025
32AQI
32AQI
17th January 2025
32AQI
32AQI
18th January 2025
34AQI
34AQI
19th January 2025
51AQI
51AQI
20th January 2025
40AQI
40AQI
21st January 2025
44AQI
44AQI
22nd January 2025
38AQI
38AQI
23rd January 2025
43AQI
43AQI
24th January 2025
47AQI
47AQI
25th January 2025
36AQI
36AQI
26th January 2025
34AQI
34AQI
27th January 2025
34AQI
34AQI
28th January 2025
39AQI
39AQI
29th January 2025
31AQI
31AQI
30th January 2025
32AQI
32AQI
31st January 2025
28AQI
28AQI
1st February 2025
35AQI
35AQI
2nd February 2025
32AQI
32AQI
3rd February 2025
38AQI
38AQI
4th February 2025
30AQI
30AQI
5th February 2025
33AQI
33AQI
6th February 2025
29AQI
29AQI
7th February 2025
30AQI
30AQI
8th February 2025
31AQI
31AQI
9th February 2025
30AQI
30AQI
10th February 2025
30AQI
30AQI
11th February 2025
30AQI
30AQI
12th February 2025
38AQI
38AQI
13th February 2025
35AQI
35AQI
14th February 2025
33AQI
33AQI
15th February 2025
30AQI
30AQI
16th February 2025
39AQI
39AQI
17th February 2025
36AQI
36AQI
18th February 2025
33AQI
33AQI
19th February 2025
31AQI
31AQI
20th February 2025
31AQI
31AQI
21st February 2025
31AQI
31AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
34AQI
34AQI
26th February 2025
38AQI
38AQI
27th February 2025
40AQI
40AQI
28th February 2025
49AQI
49AQI
1st March 2025
51AQI
51AQI
2nd March 2025
56AQI
56AQI
3rd March 2025
40AQI
40AQI
4th March 2025
37AQI
37AQI
5th March 2025
27AQI
27AQI
6th March 2025
32AQI
32AQI
7th March 2025
31AQI
31AQI
8th March 2025
39AQI
39AQI
9th March 2025
34AQI
34AQI
10th March 2025
37AQI
37AQI
11th March 2025
44AQI
44AQI
12th March 2025
46AQI
46AQI
13th March 2025
44AQI
44AQI
14th March 2025
36AQI
36AQI
15th March 2025
40AQI
40AQI
16th March 2025
23AQI
23AQI
17th March 2025
24AQI
24AQI
18th March 2025
24AQI
24AQI
19th March 2025
19AQI
19AQI
20th March 2025
25AQI
25AQI
21st March 2025
39AQI
39AQI
22nd March 2025
48AQI
48AQI
23rd March 2025
51AQI
51AQI
24th March 2025
51AQI
51AQI
25th March 2025
66AQI
66AQI
26th March 2025
59AQI
59AQI
27th March 2025
62AQI
62AQI
28th March 2025
46AQI
46AQI
29th March 2025
34AQI
34AQI
30th March 2025
27AQI
27AQI
31st March 2025
26AQI
26AQI
1st April 2025
24AQI
24AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
19AQI
19AQI
4th April 2025
21AQI
21AQI
5th April 2025
21AQI
21AQI
6th April 2025
15AQI
15AQI
7th April 2025
17AQI
17AQI
8th April 2025
22AQI
22AQI
9th April 2025
17AQI
17AQI
10th April 2025
24AQI
24AQI
11th April 2025
25AQI
25AQI
12th April 2025
21AQI
21AQI
13th April 2025
18AQI
18AQI
14th April 2025
18AQI
18AQI
15th April 2025
18AQI
18AQI
16th April 2025
18AQI
18AQI
17th April 2025
29AQI
29AQI
18th April 2025
34AQI
34AQI
19th April 2025
42AQI
42AQI
20th April 2025
31AQI
31AQI
21st April 2025
27AQI
27AQI
22nd April 2025
27AQI
27AQI
23rd April 2025
16AQI
16AQI
24th April 2025
22AQI
22AQI
25th April 2025
18AQI
18AQI
26th April 2025
24AQI
24AQI
27th April 2025
24AQI
24AQI
28th April 2025
27AQI
27AQI
29th April 2025
19AQI
19AQI
30th April 2025
23AQI
23AQI
1st May 2025
21AQI
21AQI
2nd May 2025
18AQI
18AQI
3rd May 2025
19AQI
19AQI
4th May 2025
21AQI
21AQI
5th May 2025
20AQI
20AQI
6th May 2025
18AQI
18AQI
7th May 2025
16AQI
16AQI
8th May 2025
19AQI
19AQI
9th May 2025
20AQI
20AQI
10th May 2025
15AQI
15AQI
11th May 2025
16AQI
16AQI
12th May 2025
16AQI
16AQI
13th May 2025
22AQI
22AQI
14th May 2025
24AQI
24AQI
15th May 2025
26AQI
26AQI
16th May 2025
29AQI
29AQI
17th May 2025
19AQI
19AQI
18th May 2025
25AQI
25AQI
19th May 2025
25AQI
25AQI
20th May 2025
37AQI
37AQI
21st May 2025
40AQI
40AQI
22nd May 2025
34AQI
34AQI
23rd May 2025
32AQI
32AQI
24th May 2025
26AQI
26AQI
25th May 2025
21AQI
21AQI
26th May 2025
20AQI
20AQI
27th May 2025
18AQI
18AQI
28th May 2025
17AQI
17AQI
29th May 2025
19AQI
19AQI
30th May 2025
16AQI
16AQI
31st May 2025
14AQI
14AQI
1st June 2025
15AQI
15AQI
2nd June 2025
22AQI
22AQI
3rd June 2025
20AQI
20AQI
4th June 2025
19AQI
19AQI
5th June 2025
22AQI
22AQI
6th June 2025
30AQI
30AQI
7th June 2025
34AQI
34AQI
8th June 2025
45AQI
45AQI
9th June 2025
36AQI
36AQI
10th June 2025
26AQI
26AQI
11th June 2025
22AQI
22AQI
12th June 2025
26AQI
26AQI
13th June 2025
25AQI
25AQI
14th June 2025
22AQI
22AQI
15th June 2025
20AQI
20AQI
16th June 2025
22AQI
22AQI
17th June 2025
31AQI
31AQI
18th June 2025
39AQI
39AQI
19th June 2025
42AQI
42AQI
20th June 2025
41AQI
41AQI
21st June 2025
36AQI
36AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
34AQI
34AQI
24th June 2025
34AQI
34AQI
25th June 2025
26AQI
26AQI
26th June 2025
28AQI
28AQI
27th June 2025
32AQI
32AQI
28th June 2025
34AQI
34AQI
29th June 2025
39AQI
39AQI
30th June 2025
44AQI
44AQI
1st July 2025
44AQI
44AQI
2nd July 2025
45AQI
45AQI
3rd July 2025
48AQI
48AQI
4th July 2025
48AQI
48AQI
5th July 2025
52AQI
52AQI
6th July 2025
59AQI
59AQI
7th July 2025
74AQI
74AQI
8th July 2025
75AQI
75AQI
9th July 2025
78AQI
78AQI
10th July 2025
59AQI
59AQI
11th July 2025
48AQI
48AQI
12th July 2025
50AQI
50AQI
13th July 2025
52AQI
52AQI
14th July 2025
39AQI
39AQI
15th July 2025
39AQI
39AQI
16th July 2025
40AQI
40AQI
17th July 2025
39AQI
39AQI
18th July 2025
37AQI
37AQI
19th July 2025
36AQI
36AQI
20th July 2025
37AQI
37AQI
21st July 2025
43AQI
43AQI
22nd July 2025
43AQI
43AQI
23rd July 2025
46AQI
46AQI
24th July 2025
48AQI
48AQI
25th July 2025
49AQI
49AQI
26th July 2025
49AQI
49AQI
27th July 2025
47AQI
47AQI
28th July 2025
45AQI
45AQI
29th July 2025
44AQI
44AQI
30th July 2025
36AQI
36AQI
31st July 2025
35AQI
35AQI
1st August 2025
34AQI
34AQI
35AQI
34AQI
39AQI
23AQI
22AQI
30AQI
48AQI
34AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202533AQI
30
1
28
24
7
30
31
30
24
7
1
198
15
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
May22AQI
202436AQI
16
1
2
2
12
30
25
6
31
16
13
28
3
30
31
224
22
Highest AQI recorded in
September49AQI
Lowest AQI recorded in
January20AQI
202326AQI
3
31
34
Highest AQI recorded in
December27AQI
Lowest AQI recorded in
November18AQI
202144AQI
20
11
17
11
17
12
54
34
Highest AQI recorded in
January44AQI
Lowest AQI recorded in
February43AQI
202041AQI
8
5
17
4
14
4
21
9
25
6
15
16
17
2
19
11
1
17
13
28
3
181
73
1
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
December19AQI
Most & Least Polluted Years Over the Last 5 Years
Most Polluted Year Recorded
2021(Avg.)
44AQILeast Polluted Year Recorded
2023(Avg.)
26AQIOyama's annual 2025 AQI (33) shows an average percentage change of -6.7% (improved AQI) compared to previous years: 2020 (41), 2021 (44), 2023 (26), 2024 (36).
