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
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
55AQILowest AQI recorded on
30th Aug 2024
20AQISame Day Analysis (5th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 4th Aug - 5th Aug 2026
Oyama, Tochigi, Japan
AQI
Day
Night
.
4 AM4th Aug 2026
6 PM
3 AM5th Aug 2026
Day time
Avg. Highest Time
6PM4th Aug
48AQI
Avg. Lowest Time
12PM4th Aug
22AQI
Night time
Avg. Highest Time
11PM4th Aug
55AQI
Avg. Lowest Time
3AM5th Aug
44AQI
In the last 24 hours,
Oyama's AQI reached its highest point of 55 at 11 PM during the Night, while the lowest point, 22, was recorded at 12 PM during the Day between 4th Aug and 5th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Oyama, Tochigi, Japan
JulAug
07th - 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 - 05th05th
Day
Night
7th Jul 2026204 AMAQI
7th Jul 2026295 AMAQI
7th Jul 2026306 AMAQI
7th Jul 2026267 AMAQI
7th Jul 2026278 AMAQI
7th Jul 2026249 AMAQI
7th Jul 20262410 AMAQI
7th Jul 20262211 AMAQI
7th Jul 20262112 PMAQI
7th Jul 2026221 PMAQI
7th Jul 2026242 PMAQI
7th Jul 2026283 PMAQI
7th Jul 2026254 PMAQI
7th Jul 2026265 PMAQI
7th Jul 2026266 PMAQI
7th Jul 2026187 PMAQI
7th Jul 2026208 PMAQI
7th Jul 2026279 PMAQI
7th Jul 20262410 PMAQI
7th Jul 20262611 PMAQI
8th Jul 20261312 AMAQI
8th Jul 2026241 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026283 AMAQI
24°C19/29°C
8th Jul 2026274 AMAQI
8th Jul 2026295 AMAQI
8th Jul 2026286 AMAQI
8th Jul 2026287 AMAQI
8th Jul 2026298 AMAQI
8th Jul 2026119 AMAQI
8th Jul 20261210 AMAQI
8th Jul 20262211 AMAQI
8th Jul 20262412 PMAQI
8th Jul 2026241 PMAQI
8th Jul 2026252 PMAQI
8th Jul 2026263 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026245 PMAQI
8th Jul 2026236 PMAQI
8th Jul 2026207 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026199 PMAQI
8th Jul 20262110 PMAQI
8th Jul 20261811 PMAQI
9th Jul 20261212 AMAQI
9th Jul 2026281 AMAQI
9th Jul 2026282 AMAQI
9th Jul 2026253 AMAQI
25°C21/30°C
9th Jul 2026254 AMAQI
9th Jul 2026245 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026227 AMAQI
9th Jul 2026208 AMAQI
9th Jul 2026229 AMAQI
9th Jul 20262210 AMAQI
9th Jul 20262211 AMAQI
9th Jul 20262212 PMAQI
9th Jul 2026201 PMAQI
9th Jul 2026242 PMAQI
9th Jul 2026273 PMAQI
9th Jul 2026264 PMAQI
9th Jul 2026275 PMAQI
9th Jul 2026256 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026288 PMAQI
9th Jul 2026269 PMAQI
9th Jul 20262610 PMAQI
9th Jul 20262811 PMAQI
10th Jul 20262612 AMAQI
10th Jul 2026261 AMAQI
10th Jul 2026262 AMAQI
10th Jul 2026243 AMAQI
27°C22/33°C
10th Jul 2026244 AMAQI
10th Jul 2026265 AMAQI
10th Jul 2026286 AMAQI
10th Jul 2026257 AMAQI
10th Jul 2026288 AMAQI
10th Jul 2026279 AMAQI
10th Jul 20262010 AMAQI
10th Jul 20262711 AMAQI
10th Jul 20262612 PMAQI
10th Jul 2026241 PMAQI
10th Jul 2026242 PMAQI
10th Jul 2026263 PMAQI
10th Jul 2026264 PMAQI
10th Jul 2026305 PMAQI
10th Jul 2026306 PMAQI
10th Jul 2026307 PMAQI
10th Jul 2026298 PMAQI
10th Jul 2026309 PMAQI
10th Jul 20263110 PMAQI
10th Jul 20263111 PMAQI
11th Jul 20262412 AMAQI
11th Jul 2026291 AMAQI
11th Jul 2026312 AMAQI
11th Jul 2026283 AMAQI
28°C24/34°C
11th Jul 2026264 AMAQI
11th Jul 2026305 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026307 AMAQI
11th Jul 2026318 AMAQI
11th Jul 2026319 AMAQI
11th Jul 20263110 AMAQI
11th Jul 20262611 AMAQI
11th Jul 20262512 PMAQI
11th Jul 2026241 PMAQI
11th Jul 2026242 PMAQI
11th Jul 2026223 PMAQI
11th Jul 2026284 PMAQI
11th Jul 2026305 PMAQI
11th Jul 2026306 PMAQI
11th Jul 2026307 PMAQI
11th Jul 2026268 PMAQI
11th Jul 2026289 PMAQI
11th Jul 20263010 PMAQI
11th Jul 20262811 PMAQI
12th Jul 20262312 AMAQI
12th Jul 2026241 AMAQI
12th Jul 2026242 AMAQI
12th Jul 2026253 AMAQI
28°C24/33°C
12th Jul 2026224 AMAQI
12th Jul 2026275 AMAQI
12th Jul 2026286 AMAQI
12th Jul 2026297 AMAQI
12th Jul 2026278 AMAQI
12th Jul 2026289 AMAQI
12th Jul 20262810 AMAQI
12th Jul 20262611 AMAQI
12th Jul 20262312 PMAQI
12th Jul 2026221 PMAQI
12th Jul 2026222 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026264 PMAQI
12th Jul 2026305 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026287 PMAQI
12th Jul 2026298 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20263110 PMAQI
12th Jul 20262811 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026301 AMAQI
13th Jul 2026312 AMAQI
13th Jul 2026283 AMAQI
26°C24/29°C
13th Jul 2026294 AMAQI
13th Jul 2026305 AMAQI
13th Jul 2026266 AMAQI
13th Jul 2026287 AMAQI
13th Jul 2026308 AMAQI
13th Jul 2026319 AMAQI
13th Jul 20263110 AMAQI
13th Jul 20265111 AMAQI
13th Jul 20264412 PMAQI
13th Jul 2026381 PMAQI
13th Jul 2026262 PMAQI
13th Jul 2026343 PMAQI
13th Jul 2026534 PMAQI
13th Jul 2026565 PMAQI
13th Jul 2026546 PMAQI
13th Jul 2026657 PMAQI
13th Jul 2026518 PMAQI
13th Jul 2026529 PMAQI
13th Jul 20265810 PMAQI
13th Jul 20266211 PMAQI
14th Jul 20265712 AMAQI
14th Jul 2026661 AMAQI
14th Jul 2026562 AMAQI
14th Jul 2026313 AMAQI
27°C24/31°C
14th Jul 2026274 AMAQI
14th Jul 2026275 AMAQI
14th Jul 2026366 AMAQI
14th Jul 2026307 AMAQI
14th Jul 2026268 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20266210 AMAQI
14th Jul 20268111 AMAQI
14th Jul 20266812 PMAQI
14th Jul 2026651 PMAQI
14th Jul 2026592 PMAQI
14th Jul 2026593 PMAQI
14th Jul 2026534 PMAQI
14th Jul 2026475 PMAQI
14th Jul 2026336 PMAQI
14th Jul 2026507 PMAQI
14th Jul 2026428 PMAQI
14th Jul 2026629 PMAQI
14th Jul 20263210 PMAQI
14th Jul 20263211 PMAQI
15th Jul 20263212 AMAQI
15th Jul 2026331 AMAQI
15th Jul 2026272 AMAQI
15th Jul 2026333 AMAQI
30°C24/36°C
15th Jul 2026504 AMAQI
15th Jul 2026315 AMAQI
15th Jul 2026296 AMAQI
15th Jul 2026327 AMAQI
15th Jul 2026298 AMAQI
15th Jul 2026309 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20262611 AMAQI
15th Jul 20262812 PMAQI
15th Jul 2026561 PMAQI
15th Jul 2026642 PMAQI
15th Jul 2026393 PMAQI
15th Jul 2026434 PMAQI
15th Jul 2026605 PMAQI
15th Jul 2026556 PMAQI
15th Jul 2026557 PMAQI
15th Jul 2026668 PMAQI
15th Jul 2026509 PMAQI
15th Jul 20264510 PMAQI
15th Jul 20265811 PMAQI
16th Jul 20263312 AMAQI
16th Jul 2026401 AMAQI
16th Jul 2026422 AMAQI
16th Jul 2026423 AMAQI
31°C26/37°C
16th Jul 2026434 AMAQI
16th Jul 2026435 AMAQI
16th Jul 2026546 AMAQI
16th Jul 2026487 AMAQI
16th Jul 2026708 AMAQI
16th Jul 2026539 AMAQI
16th Jul 20266310 AMAQI
16th Jul 20265711 AMAQI
16th Jul 20267012 PMAQI
16th Jul 2026591 PMAQI
16th Jul 2026732 PMAQI
16th Jul 2026583 PMAQI
16th Jul 2026564 PMAQI
16th Jul 2026675 PMAQI
16th Jul 2026616 PMAQI
16th Jul 2026437 PMAQI
16th Jul 2026478 PMAQI
16th Jul 2026479 PMAQI
16th Jul 20264310 PMAQI
16th Jul 20265611 PMAQI
17th Jul 20264012 AMAQI
17th Jul 2026521 AMAQI
17th Jul 2026522 AMAQI
17th Jul 2026403 AMAQI
30°C26/36°C
17th Jul 2026364 AMAQI
17th Jul 2026385 AMAQI
17th Jul 2026466 AMAQI
17th Jul 2026547 AMAQI
17th Jul 2026548 AMAQI
17th Jul 2026559 AMAQI
17th Jul 20266210 AMAQI
17th Jul 20266711 AMAQI
17th Jul 20265612 PMAQI
17th Jul 2026461 PMAQI
17th Jul 2026452 PMAQI
17th Jul 2026473 PMAQI
17th Jul 2026394 PMAQI
17th Jul 2026385 PMAQI
17th Jul 2026316 PMAQI
17th Jul 2026267 PMAQI
17th Jul 2026338 PMAQI
17th Jul 2026339 PMAQI
17th Jul 20262610 PMAQI
17th Jul 20262711 PMAQI
18th Jul 20262912 AMAQI
18th Jul 2026301 AMAQI
18th Jul 2026262 AMAQI
18th Jul 2026223 AMAQI
27°C25/30°C
18th Jul 2026234 AMAQI
18th Jul 2026215 AMAQI
18th Jul 2026336 AMAQI
18th Jul 2026257 AMAQI
18th Jul 2026218 AMAQI
18th Jul 2026239 AMAQI
18th Jul 20262510 AMAQI
18th Jul 20262511 AMAQI
18th Jul 20262912 PMAQI
18th Jul 2026251 PMAQI
18th Jul 2026252 PMAQI
18th Jul 2026233 PMAQI
18th Jul 2026254 PMAQI
18th Jul 2026235 PMAQI
18th Jul 2026236 PMAQI
18th Jul 2026257 PMAQI
18th Jul 2026258 PMAQI
18th Jul 2026279 PMAQI
18th Jul 20262310 PMAQI
18th Jul 20262811 PMAQI
19th Jul 20263012 AMAQI
19th Jul 2026251 AMAQI
19th Jul 2026252 AMAQI
19th Jul 2026263 AMAQI
27°C24/29°C
19th Jul 2026244 AMAQI
19th Jul 2026225 AMAQI
19th Jul 2026236 AMAQI
19th Jul 2026257 AMAQI
19th Jul 2026298 AMAQI
19th Jul 2026259 AMAQI
19th Jul 20262510 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026211 PMAQI
19th Jul 2026272 PMAQI
19th Jul 2026263 PMAQI
19th Jul 2026464 PMAQI
19th Jul 2026335 PMAQI
19th Jul 2026536 PMAQI
19th Jul 2026527 PMAQI
19th Jul 2026568 PMAQI
19th Jul 2026529 PMAQI
19th Jul 20265210 PMAQI
19th Jul 20264011 PMAQI
20th Jul 20263412 AMAQI
20th Jul 2026391 AMAQI
20th Jul 2026412 AMAQI
20th Jul 2026393 AMAQI
28°C24/33°C
20th Jul 2026454 AMAQI
20th Jul 2026445 AMAQI
20th Jul 2026446 AMAQI
20th Jul 2026447 AMAQI
20th Jul 2026378 AMAQI
20th Jul 2026479 AMAQI
20th Jul 20266410 AMAQI
20th Jul 20265411 AMAQI
20th Jul 20265212 PMAQI
20th Jul 2026491 PMAQI
20th Jul 2026282 PMAQI
20th Jul 2026373 PMAQI
20th Jul 2026484 PMAQI
20th Jul 2026405 PMAQI
20th Jul 2026416 PMAQI
20th Jul 2026337 PMAQI
20th Jul 2026258 PMAQI
20th Jul 2026249 PMAQI
20th Jul 20263510 PMAQI
20th Jul 20263811 PMAQI
21st Jul 20263412 AMAQI
21st Jul 2026321 AMAQI
21st Jul 2026282 AMAQI
21st Jul 2026333 AMAQI
32°C26/37°C
21st Jul 2026314 AMAQI
21st Jul 2026385 AMAQI
21st Jul 2026436 AMAQI
21st Jul 2026467 AMAQI
21st Jul 2026488 AMAQI
21st Jul 2026489 AMAQI
21st Jul 20265010 AMAQI
21st Jul 20265111 AMAQI
21st Jul 2026561 PMAQI
21st Jul 2026572 PMAQI
21st Jul 2026553 PMAQI
21st Jul 2026544 PMAQI
21st Jul 2026545 PMAQI
21st Jul 2026546 PMAQI
21st Jul 2026957 PMAQI
21st Jul 2026568 PMAQI
21st Jul 2026599 PMAQI
21st Jul 20266210 PMAQI
21st Jul 20266011 PMAQI
22nd Jul 20266012 AMAQI
22nd Jul 2026601 AMAQI
22nd Jul 2026582 AMAQI
22nd Jul 2026583 AMAQI
32°C27/38°C
22nd Jul 2026624 AMAQI
22nd Jul 2026565 AMAQI
22nd Jul 2026706 AMAQI
22nd Jul 2026617 AMAQI
22nd Jul 2026698 AMAQI
22nd Jul 2026599 AMAQI
22nd Jul 20265010 AMAQI
22nd Jul 20265811 AMAQI
22nd Jul 20266612 PMAQI
22nd Jul 2026641 PMAQI
22nd Jul 2026642 PMAQI
22nd Jul 2026623 PMAQI
22nd Jul 2026684 PMAQI
22nd Jul 2026645 PMAQI
22nd Jul 2026666 PMAQI
22nd Jul 2026747 PMAQI
22nd Jul 2026728 PMAQI
22nd Jul 2026689 PMAQI
22nd Jul 20266310 PMAQI
22nd Jul 20264211 PMAQI
23rd Jul 20263012 AMAQI
23rd Jul 2026301 AMAQI
23rd Jul 2026332 AMAQI
23rd Jul 2026343 AMAQI
32°C27/39°C
23rd Jul 2026414 AMAQI
23rd Jul 2026445 AMAQI
23rd Jul 2026536 AMAQI
23rd Jul 2026507 AMAQI
23rd Jul 2026548 AMAQI
23rd Jul 2026569 AMAQI
23rd Jul 20266010 AMAQI
23rd Jul 20265611 AMAQI
23rd Jul 20265612 PMAQI
23rd Jul 2026591 PMAQI
23rd Jul 2026682 PMAQI
23rd Jul 2026683 PMAQI
23rd Jul 2026714 PMAQI
23rd Jul 2026585 PMAQI
23rd Jul 2026466 PMAQI
23rd Jul 2026367 PMAQI
23rd Jul 2026328 PMAQI
23rd Jul 2026389 PMAQI
23rd Jul 20263110 PMAQI
23rd Jul 20263011 PMAQI
24th Jul 20262112 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026232 AMAQI
24th Jul 2026223 AMAQI
31°C26/38°C
24th Jul 2026254 AMAQI
24th Jul 2026295 AMAQI
24th Jul 2026246 AMAQI
24th Jul 2026247 AMAQI
24th Jul 2026268 AMAQI
24th Jul 2026309 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263011 AMAQI
24th Jul 20263112 PMAQI
24th Jul 2026371 PMAQI
24th Jul 2026372 PMAQI
24th Jul 2026433 PMAQI
24th Jul 2026484 PMAQI
24th Jul 2026545 PMAQI
24th Jul 2026516 PMAQI
24th Jul 2026497 PMAQI
24th Jul 2026318 PMAQI
24th Jul 2026279 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20262811 PMAQI
25th Jul 20262612 AMAQI
25th Jul 2026231 AMAQI
25th Jul 2026332 AMAQI
25th Jul 2026343 AMAQI
27°C25/33°C
25th Jul 2026324 AMAQI
25th Jul 2026305 AMAQI
25th Jul 2026366 AMAQI
25th Jul 2026417 AMAQI
25th Jul 2026488 AMAQI
25th Jul 2026289 AMAQI
25th Jul 20262310 AMAQI
25th Jul 20263411 AMAQI
25th Jul 20263412 PMAQI
25th Jul 2026451 PMAQI
25th Jul 2026282 PMAQI
25th Jul 2026273 PMAQI
25th Jul 2026244 PMAQI
25th Jul 2026245 PMAQI
25th Jul 2026256 PMAQI
25th Jul 2026317 PMAQI
25th Jul 2026498 PMAQI
25th Jul 2026489 PMAQI
25th Jul 20263410 PMAQI
25th Jul 20263211 PMAQI
26th Jul 20262712 AMAQI
26th Jul 2026221 AMAQI
26th Jul 2026242 AMAQI
26th Jul 2026263 AMAQI
28°C24/34°C
26th Jul 2026304 AMAQI
26th Jul 2026375 AMAQI
26th Jul 2026326 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026248 AMAQI
26th Jul 2026249 AMAQI
26th Jul 20263110 AMAQI
26th Jul 20263211 AMAQI
26th Jul 20264212 PMAQI
26th Jul 2026351 PMAQI
26th Jul 2026362 PMAQI
26th Jul 2026323 PMAQI
26th Jul 2026304 PMAQI
26th Jul 2026325 PMAQI
26th Jul 2026326 PMAQI
26th Jul 2026327 PMAQI
26th Jul 2026528 PMAQI
26th Jul 2026259 PMAQI
26th Jul 20264410 PMAQI
26th Jul 20264111 PMAQI
27th Jul 20264412 AMAQI
27th Jul 2026271 AMAQI
27th Jul 2026232 AMAQI
27th Jul 2026243 AMAQI
27°C25/32°C
27th Jul 2026274 AMAQI
27th Jul 2026235 AMAQI
27th Jul 2026216 AMAQI
27th Jul 2026277 AMAQI
27th Jul 2026268 AMAQI
27th Jul 2026279 AMAQI
27th Jul 20262610 AMAQI
27th Jul 20262711 AMAQI
27th Jul 20262212 PMAQI
27th Jul 2026231 PMAQI
27th Jul 2026212 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026234 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026356 PMAQI
27th Jul 2026407 PMAQI
27th Jul 2026308 PMAQI
27th Jul 2026329 PMAQI
27th Jul 20263710 PMAQI
27th Jul 20263211 PMAQI
28th Jul 20263512 AMAQI
28th Jul 2026331 AMAQI
28th Jul 2026342 AMAQI
28th Jul 2026323 AMAQI
25°C22/31°C
28th Jul 2026244 AMAQI
28th Jul 2026405 AMAQI
28th Jul 2026246 AMAQI
28th Jul 2026327 AMAQI
28th Jul 2026308 AMAQI
28th Jul 2026399 AMAQI
28th Jul 20264810 AMAQI
28th Jul 20265611 AMAQI
28th Jul 20263412 PMAQI
28th Jul 2026421 PMAQI
28th Jul 2026522 PMAQI
28th Jul 2026523 PMAQI
28th Jul 2026434 PMAQI
28th Jul 2026585 PMAQI
28th Jul 2026446 PMAQI
28th Jul 2026507 PMAQI
28th Jul 2026608 PMAQI
28th Jul 2026649 PMAQI
28th Jul 20264610 PMAQI
28th Jul 20263411 PMAQI
29th Jul 20263712 AMAQI
29th Jul 2026541 AMAQI
29th Jul 2026522 AMAQI
29th Jul 2026503 AMAQI
25°C23/30°C
29th Jul 2026494 AMAQI
29th Jul 2026525 AMAQI
29th Jul 2026456 AMAQI
29th Jul 2026497 AMAQI
29th Jul 2026388 AMAQI
29th Jul 2026409 AMAQI
29th Jul 20264510 AMAQI
29th Jul 20264711 AMAQI
29th Jul 20263412 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026273 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026256 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026269 PMAQI
29th Jul 20263010 PMAQI
29th Jul 20262211 PMAQI
30th Jul 20262712 AMAQI
30th Jul 2026211 AMAQI
30th Jul 2026362 AMAQI
30th Jul 2026383 AMAQI
28°C23/34°C
30th Jul 2026364 AMAQI
30th Jul 2026345 AMAQI
30th Jul 2026346 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026308 AMAQI
30th Jul 2026399 AMAQI
30th Jul 20263010 AMAQI
30th Jul 20263211 AMAQI
30th Jul 20263512 PMAQI
30th Jul 2026311 PMAQI
30th Jul 2026322 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026254 PMAQI
30th Jul 2026275 PMAQI
30th Jul 2026506 PMAQI
30th Jul 2026397 PMAQI
30th Jul 2026508 PMAQI
30th Jul 2026689 PMAQI
30th Jul 20264410 PMAQI
30th Jul 20265611 PMAQI
31st Jul 20265012 AMAQI
31st Jul 2026451 AMAQI
31st Jul 2026342 AMAQI
31st Jul 2026383 AMAQI
30°C25/36°C
31st Jul 2026544 AMAQI
31st Jul 2026545 AMAQI
31st Jul 2026526 AMAQI
31st Jul 2026327 AMAQI
31st Jul 2026518 AMAQI
31st Jul 2026569 AMAQI
31st Jul 20266010 AMAQI
31st Jul 20267311 AMAQI
31st Jul 20263812 PMAQI
31st Jul 2026551 PMAQI
31st Jul 2026542 PMAQI
31st Jul 2026293 PMAQI
31st Jul 2026434 PMAQI
31st Jul 2026605 PMAQI
31st Jul 2026526 PMAQI
31st Jul 2026487 PMAQI
31st Jul 2026568 PMAQI
31st Jul 2026379 PMAQI
31st Jul 20264610 PMAQI
31st Jul 20264811 PMAQI
1st Aug 20264612 AMAQI
1st Aug 2026241 AMAQI
1st Aug 2026312 AMAQI
1st Aug 2026373 AMAQI
29°C26/33°C
1st Aug 2026314 AMAQI
1st Aug 2026405 AMAQI
1st Aug 2026406 AMAQI
1st Aug 2026337 AMAQI
1st Aug 2026608 AMAQI
1st Aug 2026589 AMAQI
1st Aug 20266610 AMAQI
1st Aug 20264311 AMAQI
1st Aug 20264512 PMAQI
1st Aug 2026641 PMAQI
1st Aug 2026522 PMAQI
1st Aug 2026703 PMAQI
1st Aug 2026364 PMAQI
1st Aug 2026365 PMAQI
1st Aug 2026306 PMAQI
1st Aug 2026377 PMAQI
1st Aug 2026428 PMAQI
1st Aug 2026569 PMAQI
1st Aug 20267210 PMAQI
1st Aug 20267211 PMAQI
2nd Aug 20267912 AMAQI
2nd Aug 2026681 AMAQI
2nd Aug 2026622 AMAQI
2nd Aug 2026713 AMAQI
30°C25/36°C
2nd Aug 2026814 AMAQI
2nd Aug 2026675 AMAQI
2nd Aug 2026516 AMAQI
2nd Aug 2026607 AMAQI
2nd Aug 2026688 AMAQI
2nd Aug 2026669 AMAQI
2nd Aug 20265510 AMAQI
2nd Aug 20265511 AMAQI
2nd Aug 20265012 PMAQI
2nd Aug 2026491 PMAQI
2nd Aug 2026462 PMAQI
2nd Aug 2026593 PMAQI
2nd Aug 2026554 PMAQI
2nd Aug 2026475 PMAQI
2nd Aug 2026326 PMAQI
2nd Aug 2026227 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026279 PMAQI
2nd Aug 20262310 PMAQI
2nd Aug 20262111 PMAQI
3rd Aug 20261312 AMAQI
3rd Aug 2026171 AMAQI
3rd Aug 2026172 AMAQI
3rd Aug 2026163 AMAQI
29°C23/35°C
3rd Aug 2026184 AMAQI
3rd Aug 2026195 AMAQI
3rd Aug 2026226 AMAQI
3rd Aug 2026167 AMAQI
3rd Aug 2026218 AMAQI
3rd Aug 2026199 AMAQI
3rd Aug 20261910 AMAQI
3rd Aug 20262011 AMAQI
3rd Aug 20262112 PMAQI
3rd Aug 2026251 PMAQI
3rd Aug 2026242 PMAQI
3rd Aug 2026273 PMAQI
3rd Aug 2026304 PMAQI
3rd Aug 2026285 PMAQI
3rd Aug 2026246 PMAQI
3rd Aug 2026377 PMAQI
3rd Aug 2026248 PMAQI
3rd Aug 2026249 PMAQI
3rd Aug 20262410 PMAQI
3rd Aug 20262311 PMAQI
4th Aug 20263412 AMAQI
4th Aug 2026321 AMAQI
4th Aug 2026322 AMAQI
4th Aug 2026263 AMAQI
23°C22/25°C
4th Aug 2026264 AMAQI
4th Aug 2026345 AMAQI
4th Aug 2026226 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026288 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20263010 AMAQI
4th Aug 20263711 AMAQI
4th Aug 20262212 PMAQI
4th Aug 2026251 PMAQI
4th Aug 2026252 PMAQI
4th Aug 2026343 PMAQI
4th Aug 2026324 PMAQI
4th Aug 2026375 PMAQI
4th Aug 2026486 PMAQI
4th Aug 2026527 PMAQI
4th Aug 2026458 PMAQI
4th Aug 2026529 PMAQI
4th Aug 20265210 PMAQI
4th Aug 20265511 PMAQI
5th Aug 20264612 AMAQI
5th Aug 2026501 AMAQI
5th Aug 2026502 AMAQI
5th Aug 2026443 AMAQI
24°C20/29°C
5th Aug 2026424 AMAQI
4 AM5th Aug 2026415 AMAQI
5th Aug 2026336 AMAQI
5th Aug 2026407 AMAQI
5th Aug 2026478 AMAQI
5th Aug 2026349 AMAQI
5th Aug 20263610 AMAQI
5th Aug 20263011 AMAQI
11 AM5th Aug 20263812 PMAQI
5th Aug 2026301 PMAQI
5th Aug 2026382 PMAQI
5th Aug 2026283 PMAQI
5th Aug 2026404 PMAQI
5th Aug 2026505 PMAQI
5th Aug 2026406 PMAQI
6 PM5th Aug 2026367 PMAQI
5th Aug 2026338 PMAQI
5th Aug 2026469 PMAQI
5th Aug 20265410 PMAQI
5th Aug 20265411 PMAQI
11 PM3 AM
26°C21/32°C
Day time
Avg. Highest Time
10 AM - 11 AM
40AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM - 7 AM
35AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 11 AM (Avg. 40), while the lowest AQI was between 4 AM to 7 AM (Avg. 35).
Night time
Avg. Highest Time
7 PM - 11 PM
39AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
3 AM
33AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 11 PM (Avg. 39), while the lowest AQI was between 3 AM to 3 AM (Avg. 33).
2026 Days Vs Air Quality
Oyama, Tochigi, Japan
2026
86%
187
14%
30
Total number of days with different AQI categories in last 217 days in 2026 (148 days remaining)
Good
187 DaysModerate
30 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2026, 86% of 217 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
Oyama, Tochigi, 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
20AQI (US)
20AQI (US)
2nd January 2026
24AQI (US)
24AQI (US)
3rd January 2026
23AQI (US)
23AQI (US)
4th January 2026
24AQI (US)
24AQI (US)
5th January 2026
36AQI (US)
36AQI (US)
6th January 2026
26AQI (US)
26AQI (US)
7th January 2026
37AQI (US)
37AQI (US)
8th January 2026
37AQI (US)
37AQI (US)
9th January 2026
30AQI (US)
30AQI (US)
10th January 2026
44AQI (US)
44AQI (US)
11th January 2026
42AQI (US)
42AQI (US)
12th January 2026
18AQI (US)
18AQI (US)
13th January 2026
30AQI (US)
30AQI (US)
14th January 2026
16AQI (US)
16AQI (US)
15th January 2026
35AQI (US)
35AQI (US)
16th January 2026
48AQI (US)
48AQI (US)
17th January 2026
46AQI (US)
46AQI (US)
18th January 2026
35AQI (US)
35AQI (US)
19th January 2026
40AQI (US)
40AQI (US)
20th January 2026
35AQI (US)
35AQI (US)
21st January 2026
16AQI (US)
16AQI (US)
22nd January 2026
22AQI (US)
22AQI (US)
23rd January 2026
31AQI (US)
31AQI (US)
24th January 2026
40AQI (US)
40AQI (US)
25th January 2026
38AQI (US)
38AQI (US)
26th January 2026
14AQI (US)
14AQI (US)
27th January 2026
25AQI (US)
25AQI (US)
28th January 2026
24AQI (US)
24AQI (US)
29th January 2026
18AQI (US)
18AQI (US)
30th January 2026
35AQI (US)
35AQI (US)
31st January 2026
39AQI (US)
39AQI (US)
1st February 2026
38AQI (US)
38AQI (US)
2nd February 2026
18AQI (US)
18AQI (US)
3rd February 2026
30AQI (US)
30AQI (US)
4th February 2026
38AQI (US)
38AQI (US)
5th February 2026
50AQI (US)
50AQI (US)
6th February 2026
52AQI (US)
52AQI (US)
7th February 2026
18AQI (US)
18AQI (US)
8th February 2026
14AQI (US)
14AQI (US)
9th February 2026
34AQI (US)
34AQI (US)
10th February 2026
38AQI (US)
38AQI (US)
11th February 2026
62AQI (US)
62AQI (US)
12th February 2026
31AQI (US)
31AQI (US)
13th February 2026
36AQI (US)
36AQI (US)
14th February 2026
66AQI (US)
66AQI (US)
15th February 2026
66AQI (US)
66AQI (US)
16th February 2026
47AQI (US)
47AQI (US)
17th February 2026
18AQI (US)
18AQI (US)
18th February 2026
30AQI (US)
30AQI (US)
19th February 2026
32AQI (US)
32AQI (US)
20th February 2026
32AQI (US)
32AQI (US)
21st February 2026
44AQI (US)
44AQI (US)
22nd February 2026
43AQI (US)
43AQI (US)
23rd February 2026
48AQI (US)
48AQI (US)
24th February 2026
36AQI (US)
36AQI (US)
25th February 2026
34AQI (US)
34AQI (US)
26th February 2026
14AQI (US)
14AQI (US)
27th February 2026
40AQI (US)
40AQI (US)
28th February 2026
46AQI (US)
46AQI (US)
1st March 2026
38AQI (US)
38AQI (US)
2nd March 2026
88AQI (US)
88AQI (US)
3rd March 2026
46AQI (US)
46AQI (US)
4th March 2026
61AQI (US)
61AQI (US)
5th March 2026
64AQI (US)
64AQI (US)
6th March 2026
52AQI (US)
52AQI (US)
7th March 2026
46AQI (US)
46AQI (US)
8th March 2026
46AQI (US)
46AQI (US)
9th March 2026
48AQI (US)
48AQI (US)
10th March 2026
58AQI (US)
58AQI (US)
11th March 2026
60AQI (US)
60AQI (US)
12th March 2026
69AQI (US)
69AQI (US)
13th March 2026
42AQI (US)
42AQI (US)
14th March 2026
50AQI (US)
50AQI (US)
15th March 2026
61AQI (US)
61AQI (US)
16th March 2026
60AQI (US)
60AQI (US)
17th March 2026
56AQI (US)
56AQI (US)
18th March 2026
57AQI (US)
57AQI (US)
19th March 2026
38AQI (US)
38AQI (US)
20th March 2026
33AQI (US)
33AQI (US)
21st March 2026
48AQI (US)
48AQI (US)
22nd March 2026
50AQI (US)
50AQI (US)
23rd March 2026
54AQI (US)
54AQI (US)
24th March 2026
44AQI (US)
44AQI (US)
25th March 2026
54AQI (US)
54AQI (US)
26th March 2026
22AQI (US)
22AQI (US)
27th March 2026
18AQI (US)
18AQI (US)
28th March 2026
48AQI (US)
48AQI (US)
29th March 2026
56AQI (US)
56AQI (US)
30th March 2026
58AQI (US)
58AQI (US)
31st March 2026
34AQI (US)
34AQI (US)
1st April 2026
16AQI (US)
16AQI (US)
2nd April 2026
26AQI (US)
26AQI (US)
3rd April 2026
46AQI (US)
46AQI (US)
4th April 2026
45AQI (US)
45AQI (US)
5th April 2026
36AQI (US)
36AQI (US)
6th April 2026
24AQI (US)
24AQI (US)
7th April 2026
39AQI (US)
39AQI (US)
8th April 2026
20AQI (US)
20AQI (US)
9th April 2026
30AQI (US)
30AQI (US)
10th April 2026
48AQI (US)
48AQI (US)
11th April 2026
38AQI (US)
38AQI (US)
12th April 2026
31AQI (US)
31AQI (US)
13th April 2026
34AQI (US)
34AQI (US)
14th April 2026
39AQI (US)
39AQI (US)
15th April 2026
40AQI (US)
40AQI (US)
16th April 2026
33AQI (US)
33AQI (US)
17th April 2026
39AQI (US)
39AQI (US)
18th April 2026
36AQI (US)
36AQI (US)
19th April 2026
39AQI (US)
39AQI (US)
20th April 2026
36AQI (US)
36AQI (US)
21st April 2026
41AQI (US)
41AQI (US)
22nd April 2026
45AQI (US)
45AQI (US)
23rd April 2026
36AQI (US)
36AQI (US)
24th April 2026
31AQI (US)
31AQI (US)
25th April 2026
45AQI (US)
45AQI (US)
26th April 2026
50AQI (US)
50AQI (US)
27th April 2026
48AQI (US)
48AQI (US)
28th April 2026
42AQI (US)
42AQI (US)
29th April 2026
38AQI (US)
38AQI (US)
30th April 2026
40AQI (US)
40AQI (US)
1st May 2026
48AQI (US)
48AQI (US)
2nd May 2026
50AQI (US)
50AQI (US)
3rd May 2026
44AQI (US)
44AQI (US)
4th May 2026
29AQI (US)
29AQI (US)
5th May 2026
18AQI (US)
18AQI (US)
6th May 2026
32AQI (US)
32AQI (US)
7th May 2026
34AQI (US)
34AQI (US)
8th May 2026
26AQI (US)
26AQI (US)
9th May 2026
25AQI (US)
25AQI (US)
10th May 2026
28AQI (US)
28AQI (US)
11th May 2026
29AQI (US)
29AQI (US)
12th May 2026
36AQI (US)
36AQI (US)
13th May 2026
42AQI (US)
42AQI (US)
14th May 2026
35AQI (US)
35AQI (US)
15th May 2026
34AQI (US)
34AQI (US)
16th May 2026
85AQI (US)
85AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
54AQI (US)
54AQI (US)
19th May 2026
49AQI (US)
49AQI (US)
20th May 2026
62AQI (US)
62AQI (US)
21st May 2026
60AQI (US)
60AQI (US)
22nd May 2026
60AQI (US)
60AQI (US)
23rd May 2026
54AQI (US)
54AQI (US)
24th May 2026
58AQI (US)
58AQI (US)
25th May 2026
48AQI (US)
48AQI (US)
26th May 2026
40AQI (US)
40AQI (US)
27th May 2026
24AQI (US)
24AQI (US)
28th May 2026
15AQI (US)
15AQI (US)
29th May 2026
25AQI (US)
25AQI (US)
30th May 2026
24AQI (US)
24AQI (US)
31st May 2026
27AQI (US)
27AQI (US)
1st June 2026
34AQI (US)
34AQI (US)
2nd June 2026
32AQI (US)
32AQI (US)
3rd June 2026
11AQI (US)
11AQI (US)
4th June 2026
23AQI (US)
23AQI (US)
5th June 2026
22AQI (US)
22AQI (US)
6th June 2026
20AQI (US)
20AQI (US)
7th June 2026
21AQI (US)
21AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
22AQI (US)
22AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
25AQI (US)
25AQI (US)
12th June 2026
24AQI (US)
24AQI (US)
13th June 2026
26AQI (US)
26AQI (US)
14th June 2026
28AQI (US)
28AQI (US)
15th June 2026
17AQI (US)
17AQI (US)
16th June 2026
18AQI (US)
18AQI (US)
17th June 2026
25AQI (US)
25AQI (US)
18th June 2026
25AQI (US)
25AQI (US)
19th June 2026
29AQI (US)
29AQI (US)
20th June 2026
22AQI (US)
22AQI (US)
21st June 2026
20AQI (US)
20AQI (US)
22nd June 2026
19AQI (US)
19AQI (US)
23rd June 2026
21AQI (US)
21AQI (US)
24th June 2026
22AQI (US)
22AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
29AQI (US)
29AQI (US)
27th June 2026
26AQI (US)
26AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
28AQI (US)
28AQI (US)
30th June 2026
24AQI (US)
24AQI (US)
1st July 2026
26AQI (US)
26AQI (US)
2nd July 2026
22AQI (US)
22AQI (US)
3rd July 2026
20AQI (US)
20AQI (US)
4th July 2026
25AQI (US)
25AQI (US)
5th July 2026
24AQI (US)
24AQI (US)
6th July 2026
22AQI (US)
22AQI (US)
7th July 2026
25AQI (US)
25AQI (US)
8th July 2026
23AQI (US)
23AQI (US)
9th July 2026
24AQI (US)
24AQI (US)
10th July 2026
27AQI (US)
27AQI (US)
11th July 2026
28AQI (US)
28AQI (US)
12th July 2026
26AQI (US)
26AQI (US)
13th July 2026
40AQI (US)
40AQI (US)
14th July 2026
47AQI (US)
47AQI (US)
15th July 2026
42AQI (US)
42AQI (US)
16th July 2026
53AQI (US)
53AQI (US)
17th July 2026
44AQI (US)
44AQI (US)
18th July 2026
25AQI (US)
25AQI (US)
19th July 2026
33AQI (US)
33AQI (US)
20th July 2026
40AQI (US)
40AQI (US)
21st July 2026
50AQI (US)
50AQI (US)
22nd July 2026
62AQI (US)
62AQI (US)
23rd July 2026
47AQI (US)
47AQI (US)
24th July 2026
32AQI (US)
32AQI (US)
25th July 2026
33AQI (US)
33AQI (US)
26th July 2026
32AQI (US)
32AQI (US)
27th July 2026
28AQI (US)
28AQI (US)
28th July 2026
42AQI (US)
42AQI (US)
29th July 2026
36AQI (US)
36AQI (US)
30th July 2026
36AQI (US)
36AQI (US)
31st July 2026
48AQI (US)
48AQI (US)
1st August 2026
47AQI (US)
47AQI (US)
2nd August 2026
52AQI (US)
52AQI (US)
3rd August 2026
22AQI (US)
22AQI (US)
4th August 2026
34AQI (US)
34AQI (US)
5th August 2026
41AQI (US)
41AQI (US)
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
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
31AQI (US)
38AQI (US)
50AQI (US)
37AQI (US)
41AQI (US)
24AQI (US)
34AQI (US)
39AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202636AQI (US)
31
24
4
16
15
30
23
8
30
29
2
4
1
187
30
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202538AQI (US)
30
1
28
24
7
30
31
30
24
7
25
6
28
2
15
16
18
12
17
14
300
65
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
202436AQI (US)
16
1
2
2
12
30
25
6
31
16
13
29
2
30
31
225
21
Highest AQI (US) recorded in
September49AQI (US)
Lowest AQI (US) recorded in
January20AQI (US)
202326AQI (US)
3
31
34
Highest AQI (US) recorded in
December27AQI (US)
Lowest AQI (US) recorded in
November18AQI (US)
202144AQI (US)
20
11
17
11
17
12
54
34
Highest AQI (US) recorded in
January44AQI (US)
Lowest AQI (US) recorded in
February43AQI (US)
202041AQI (US)
8
5
17
4
14
4
22
8
25
6
15
16
17
2
19
11
1
17
13
28
3
182
72
1
Highest AQI (US) recorded in
August54AQI (US)
Lowest AQI (US) recorded in
December19AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
44AQI (US)Least Polluted Year Recorded
2023(Avg.)
26AQI (US)Oyama's annual 2026 AQI (US) (36) shows an average percentage change of 0.5% (worsened AQI (US)) compared to previous years: 2020 (41), 2021 (44), 2023 (26), 2024 (36), 2025 (38).
