Kosai, Shizuoka, 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
Kosai, Shizuoka, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
9th Aug 2024
63AQILowest AQI recorded on
29th Aug 2024
11AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Kosai, Shizuoka, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
7 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
4PM4th Aug
99AQI
Avg. Lowest Time
8AM4th Aug
43AQI
Night time
Avg. Highest Time
7PM4th Aug
80AQI
Avg. Lowest Time
3AM5th Aug
42AQI
In the last 24 hours,
Kosai's AQI reached its highest point of 99 at 4 PM during the Day, while the lowest point, 42, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Kosai, Shizuoka, Japan
JulAug
06th - 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 - 05th05th
Day
Night
6th Jul 2025494 AMAQI
6th Jul 2025565 AMAQI
6th Jul 2025556 AMAQI
6th Jul 2025557 AMAQI
6th Jul 2025558 AMAQI
6th Jul 2025579 AMAQI
6th Jul 20256110 AMAQI
6th Jul 20256011 AMAQI
6th Jul 20255712 PMAQI
6th Jul 2025591 PMAQI
6th Jul 2025602 PMAQI
6th Jul 2025623 PMAQI
6th Jul 2025734 PMAQI
6th Jul 2025725 PMAQI
6th Jul 2025786 PMAQI
6th Jul 2025867 PMAQI
6th Jul 2025828 PMAQI
6th Jul 2025669 PMAQI
6th Jul 20256710 PMAQI
6th Jul 20256611 PMAQI
7th Jul 20256412 AMAQI
7th Jul 2025571 AMAQI
7th Jul 2025552 AMAQI
7th Jul 2025543 AMAQI
30°C27/35°C
7th Jul 2025544 AMAQI
7th Jul 2025565 AMAQI
7th Jul 2025566 AMAQI
7th Jul 2025567 AMAQI
7th Jul 2025568 AMAQI
7th Jul 2025949 AMAQI
7th Jul 202510210 AMAQI
7th Jul 20259411 AMAQI
7th Jul 20259612 PMAQI
7th Jul 2025911 PMAQI
7th Jul 2025892 PMAQI
7th Jul 2025893 PMAQI
7th Jul 2025884 PMAQI
7th Jul 2025885 PMAQI
7th Jul 2025946 PMAQI
7th Jul 2025957 PMAQI
7th Jul 2025938 PMAQI
7th Jul 2025749 PMAQI
7th Jul 20257210 PMAQI
7th Jul 20257111 PMAQI
8th Jul 20256812 AMAQI
8th Jul 2025601 AMAQI
8th Jul 2025582 AMAQI
8th Jul 2025593 AMAQI
30°C27/33°C
8th Jul 2025604 AMAQI
8th Jul 2025645 AMAQI
8th Jul 2025646 AMAQI
8th Jul 2025647 AMAQI
8th Jul 2025648 AMAQI
8th Jul 2025869 AMAQI
8th Jul 202510410 AMAQI
8th Jul 202511111 AMAQI
8th Jul 202512212 PMAQI
8th Jul 20251091 PMAQI
8th Jul 20251022 PMAQI
8th Jul 20251003 PMAQI
8th Jul 2025994 PMAQI
8th Jul 2025965 PMAQI
8th Jul 2025996 PMAQI
8th Jul 2025977 PMAQI
8th Jul 2025928 PMAQI
8th Jul 2025769 PMAQI
8th Jul 20257610 PMAQI
8th Jul 20257611 PMAQI
9th Jul 20257412 AMAQI
9th Jul 2025661 AMAQI
9th Jul 2025642 AMAQI
9th Jul 2025643 AMAQI
29°C27/32°C
9th Jul 2025664 AMAQI
9th Jul 2025715 AMAQI
9th Jul 2025716 AMAQI
9th Jul 2025717 AMAQI
9th Jul 2025718 AMAQI
9th Jul 2025989 AMAQI
9th Jul 202511210 AMAQI
9th Jul 202510411 AMAQI
9th Jul 20259812 PMAQI
9th Jul 2025901 PMAQI
9th Jul 2025922 PMAQI
9th Jul 2025963 PMAQI
9th Jul 2025904 PMAQI
9th Jul 2025815 PMAQI
9th Jul 2025746 PMAQI
9th Jul 2025617 PMAQI
9th Jul 2025608 PMAQI
9th Jul 2025639 PMAQI
9th Jul 20256410 PMAQI
9th Jul 20256311 PMAQI
10th Jul 20256412 AMAQI
10th Jul 2025681 AMAQI
10th Jul 2025702 AMAQI
10th Jul 2025703 AMAQI
29°C26/31°C
10th Jul 2025724 AMAQI
10th Jul 2025755 AMAQI
10th Jul 2025756 AMAQI
10th Jul 2025757 AMAQI
10th Jul 2025758 AMAQI
10th Jul 2025579 AMAQI
10th Jul 20254510 AMAQI
10th Jul 20253811 AMAQI
10th Jul 20253012 PMAQI
10th Jul 2025381 PMAQI
10th Jul 2025352 PMAQI
10th Jul 2025423 PMAQI
10th Jul 2025404 PMAQI
10th Jul 2025365 PMAQI
10th Jul 2025356 PMAQI
10th Jul 2025407 PMAQI
10th Jul 2025438 PMAQI
10th Jul 2025589 PMAQI
10th Jul 20255910 PMAQI
10th Jul 20255911 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025671 AMAQI
11th Jul 2025692 AMAQI
11th Jul 2025693 AMAQI
29°C26/32°C
11th Jul 2025694 AMAQI
11th Jul 2025655 AMAQI
11th Jul 2025656 AMAQI
11th Jul 2025657 AMAQI
11th Jul 2025658 AMAQI
11th Jul 2025309 AMAQI
11th Jul 20252010 AMAQI
11th Jul 20252711 AMAQI
11th Jul 20253212 PMAQI
11th Jul 2025411 PMAQI
11th Jul 2025412 PMAQI
11th Jul 2025433 PMAQI
11th Jul 2025444 PMAQI
11th Jul 2025445 PMAQI
11th Jul 2025466 PMAQI
11th Jul 2025467 PMAQI
11th Jul 2025528 PMAQI
11th Jul 2025579 PMAQI
11th Jul 20255810 PMAQI
11th Jul 20255811 PMAQI
12th Jul 20255912 AMAQI
12th Jul 2025641 AMAQI
12th Jul 2025642 AMAQI
12th Jul 2025643 AMAQI
28°C26/31°C
12th Jul 2025644 AMAQI
12th Jul 2025615 AMAQI
12th Jul 2025616 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025618 AMAQI
12th Jul 2025459 AMAQI
12th Jul 20253910 AMAQI
12th Jul 20253811 AMAQI
12th Jul 20254212 PMAQI
12th Jul 2025431 PMAQI
12th Jul 2025422 PMAQI
12th Jul 2025393 PMAQI
12th Jul 2025384 PMAQI
12th Jul 2025385 PMAQI
12th Jul 2025406 PMAQI
12th Jul 2025407 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025569 PMAQI
12th Jul 20255510 PMAQI
12th Jul 20255611 PMAQI
13th Jul 20255612 AMAQI
13th Jul 2025601 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025623 AMAQI
27°C25/29°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025479 AMAQI
13th Jul 20253910 AMAQI
13th Jul 20254311 AMAQI
13th Jul 20253912 PMAQI
13th Jul 2025461 PMAQI
13th Jul 2025422 PMAQI
13th Jul 2025383 PMAQI
13th Jul 2025354 PMAQI
13th Jul 2025365 PMAQI
13th Jul 2025396 PMAQI
13th Jul 2025387 PMAQI
13th Jul 2025438 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255311 PMAQI
14th Jul 20255312 AMAQI
14th Jul 2025581 AMAQI
14th Jul 2025592 AMAQI
14th Jul 2025593 AMAQI
27°C24/30°C
14th Jul 2025584 AMAQI
14th Jul 2025575 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025329 AMAQI
14th Jul 20252910 AMAQI
14th Jul 20252811 AMAQI
14th Jul 20252412 PMAQI
14th Jul 2025301 PMAQI
14th Jul 2025262 PMAQI
14th Jul 2025273 PMAQI
14th Jul 2025274 PMAQI
14th Jul 2025275 PMAQI
14th Jul 2025326 PMAQI
14th Jul 2025307 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025519 PMAQI
14th Jul 20255110 PMAQI
14th Jul 20255011 PMAQI
15th Jul 20255112 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025572 AMAQI
15th Jul 2025573 AMAQI
27°C25/30°C
15th Jul 2025564 AMAQI
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025359 AMAQI
15th Jul 20252510 AMAQI
15th Jul 20253011 AMAQI
15th Jul 20253812 PMAQI
15th Jul 2025421 PMAQI
15th Jul 2025372 PMAQI
15th Jul 2025463 PMAQI
15th Jul 2025434 PMAQI
15th Jul 2025415 PMAQI
15th Jul 2025446 PMAQI
15th Jul 2025457 PMAQI
15th Jul 2025448 PMAQI
15th Jul 2025519 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255212 AMAQI
16th Jul 2025541 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025543 AMAQI
27°C25/29°C
16th Jul 2025544 AMAQI
16th Jul 2025525 AMAQI
16th Jul 2025536 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025559 AMAQI
16th Jul 20254410 AMAQI
16th Jul 20254211 AMAQI
16th Jul 20254112 PMAQI
16th Jul 2025451 PMAQI
16th Jul 2025422 PMAQI
16th Jul 2025413 PMAQI
16th Jul 2025364 PMAQI
16th Jul 2025305 PMAQI
16th Jul 2025326 PMAQI
16th Jul 2025357 PMAQI
16th Jul 2025338 PMAQI
16th Jul 2025469 PMAQI
16th Jul 20254510 PMAQI
16th Jul 20254411 PMAQI
17th Jul 20254612 AMAQI
17th Jul 2025531 AMAQI
17th Jul 2025532 AMAQI
17th Jul 2025533 AMAQI
26°C24/29°C
17th Jul 2025534 AMAQI
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025439 AMAQI
17th Jul 20254210 AMAQI
17th Jul 20254411 AMAQI
17th Jul 20254512 PMAQI
17th Jul 2025421 PMAQI
17th Jul 2025442 PMAQI
17th Jul 2025443 PMAQI
17th Jul 2025444 PMAQI
17th Jul 2025445 PMAQI
17th Jul 2025446 PMAQI
17th Jul 2025427 PMAQI
17th Jul 2025448 PMAQI
17th Jul 2025479 PMAQI
17th Jul 20254610 PMAQI
17th Jul 20254711 PMAQI
18th Jul 20254712 AMAQI
18th Jul 2025511 AMAQI
18th Jul 2025522 AMAQI
18th Jul 2025523 AMAQI
25°C24/27°C
18th Jul 2025524 AMAQI
18th Jul 2025515 AMAQI
18th Jul 2025516 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025518 AMAQI
18th Jul 2025339 AMAQI
18th Jul 20252610 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252612 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025323 PMAQI
18th Jul 2025334 PMAQI
18th Jul 2025335 PMAQI
18th Jul 2025336 PMAQI
18th Jul 2025327 PMAQI
18th Jul 2025358 PMAQI
18th Jul 2025429 PMAQI
18th Jul 20254210 PMAQI
18th Jul 20254011 PMAQI
19th Jul 20254412 AMAQI
19th Jul 2025491 AMAQI
19th Jul 2025512 AMAQI
19th Jul 2025513 AMAQI
26°C24/29°C
19th Jul 2025504 AMAQI
19th Jul 2025485 AMAQI
19th Jul 2025486 AMAQI
19th Jul 2025477 AMAQI
19th Jul 2025488 AMAQI
19th Jul 2025279 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252311 AMAQI
19th Jul 20252312 PMAQI
19th Jul 2025241 PMAQI
19th Jul 2025222 PMAQI
19th Jul 2025213 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025235 PMAQI
19th Jul 2025276 PMAQI
19th Jul 2025257 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253812 AMAQI
20th Jul 2025461 AMAQI
20th Jul 2025482 AMAQI
20th Jul 2025483 AMAQI
27°C24/30°C
20th Jul 2025464 AMAQI
20th Jul 2025445 AMAQI
20th Jul 2025436 AMAQI
20th Jul 2025447 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20251910 AMAQI
20th Jul 20252211 AMAQI
20th Jul 20252212 PMAQI
20th Jul 2025241 PMAQI
20th Jul 2025222 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025204 PMAQI
20th Jul 2025235 PMAQI
20th Jul 2025256 PMAQI
20th Jul 2025257 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253410 PMAQI
20th Jul 20253311 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025421 AMAQI
21st Jul 2025442 AMAQI
21st Jul 2025443 AMAQI
28°C24/31°C
21st Jul 2025424 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025406 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025259 AMAQI
21st Jul 20252310 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252512 PMAQI
21st Jul 2025241 PMAQI
21st Jul 2025222 PMAQI
21st Jul 2025203 PMAQI
21st Jul 2025214 PMAQI
21st Jul 2025255 PMAQI
21st Jul 2025246 PMAQI
21st Jul 2025257 PMAQI
21st Jul 2025278 PMAQI
21st Jul 2025319 PMAQI
21st Jul 20253110 PMAQI
21st Jul 20252911 PMAQI
22nd Jul 20253112 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025412 AMAQI
22nd Jul 2025413 AMAQI
28°C25/31°C
22nd Jul 2025404 AMAQI
22nd Jul 2025375 AMAQI
22nd Jul 2025376 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025249 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252711 AMAQI
22nd Jul 20252812 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025212 PMAQI
22nd Jul 2025223 PMAQI
22nd Jul 2025214 PMAQI
22nd Jul 2025205 PMAQI
22nd Jul 2025206 PMAQI
22nd Jul 2025187 PMAQI
22nd Jul 2025248 PMAQI
22nd Jul 2025269 PMAQI
22nd Jul 20252710 PMAQI
22nd Jul 20252811 PMAQI
23rd Jul 20253012 AMAQI
23rd Jul 2025361 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025383 AMAQI
28°C26/32°C
23rd Jul 2025364 AMAQI
23rd Jul 2025345 AMAQI
23rd Jul 2025346 AMAQI
23rd Jul 2025347 AMAQI
23rd Jul 2025348 AMAQI
23rd Jul 2025229 AMAQI
23rd Jul 20252110 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252712 PMAQI
23rd Jul 2025251 PMAQI
23rd Jul 2025222 PMAQI
23rd Jul 2025223 PMAQI
23rd Jul 2025204 PMAQI
23rd Jul 2025225 PMAQI
23rd Jul 2025196 PMAQI
23rd Jul 2025207 PMAQI
23rd Jul 2025208 PMAQI
23rd Jul 2025279 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252711 PMAQI
24th Jul 20252812 AMAQI
24th Jul 2025341 AMAQI
24th Jul 2025352 AMAQI
24th Jul 2025353 AMAQI
28°C26/32°C
24th Jul 2025344 AMAQI
24th Jul 2025335 AMAQI
24th Jul 2025326 AMAQI
24th Jul 2025337 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252010 AMAQI
24th Jul 20252211 AMAQI
24th Jul 20252312 PMAQI
24th Jul 2025311 PMAQI
24th Jul 2025332 PMAQI
24th Jul 2025283 PMAQI
24th Jul 2025234 PMAQI
24th Jul 2025205 PMAQI
24th Jul 2025176 PMAQI
24th Jul 2025167 PMAQI
24th Jul 2025228 PMAQI
24th Jul 2025259 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252411 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025311 AMAQI
25th Jul 2025332 AMAQI
25th Jul 2025333 AMAQI
29°C25/32°C
25th Jul 2025334 AMAQI
25th Jul 2025325 AMAQI
25th Jul 2025326 AMAQI
25th Jul 2025327 AMAQI
25th Jul 2025328 AMAQI
25th Jul 2025249 AMAQI
25th Jul 20252310 AMAQI
25th Jul 20252111 AMAQI
25th Jul 20252412 PMAQI
25th Jul 2025191 PMAQI
25th Jul 2025172 PMAQI
25th Jul 2025173 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025165 PMAQI
25th Jul 2025156 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025208 PMAQI
25th Jul 2025239 PMAQI
25th Jul 20252410 PMAQI
25th Jul 20252511 PMAQI
26th Jul 20252612 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025322 AMAQI
26th Jul 2025323 AMAQI
29°C26/31°C
26th Jul 2025314 AMAQI
26th Jul 2025295 AMAQI
26th Jul 2025296 AMAQI
26th Jul 2025297 AMAQI
26th Jul 2025298 AMAQI
26th Jul 2025209 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20251911 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025231 PMAQI
26th Jul 2025212 PMAQI
26th Jul 2025193 PMAQI
26th Jul 2025224 PMAQI
26th Jul 2025225 PMAQI
26th Jul 2025226 PMAQI
26th Jul 2025227 PMAQI
26th Jul 2025228 PMAQI
26th Jul 2025269 PMAQI
26th Jul 20252410 PMAQI
26th Jul 20252511 PMAQI
27th Jul 20252612 AMAQI
27th Jul 2025291 AMAQI
27th Jul 2025292 AMAQI
27th Jul 2025303 AMAQI
29°C26/32°C
27th Jul 2025294 AMAQI
27th Jul 2025285 AMAQI
27th Jul 2025286 AMAQI
27th Jul 2025287 AMAQI
27th Jul 2025288 AMAQI
27th Jul 2025229 AMAQI
27th Jul 20251810 AMAQI
27th Jul 20251811 AMAQI
27th Jul 20251812 PMAQI
27th Jul 2025201 PMAQI
27th Jul 2025182 PMAQI
27th Jul 2025183 PMAQI
27th Jul 2025204 PMAQI
27th Jul 2025185 PMAQI
27th Jul 2025156 PMAQI
27th Jul 2025187 PMAQI
27th Jul 2025218 PMAQI
27th Jul 2025239 PMAQI
27th Jul 20252210 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252312 AMAQI
28th Jul 2025271 AMAQI
28th Jul 2025282 AMAQI
28th Jul 2025283 AMAQI
28°C26/31°C
28th Jul 2025284 AMAQI
28th Jul 2025265 AMAQI
28th Jul 2025266 AMAQI
28th Jul 2025267 AMAQI
28th Jul 2025268 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20251710 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20252912 PMAQI
28th Jul 2025311 PMAQI
28th Jul 2025322 PMAQI
28th Jul 2025283 PMAQI
28th Jul 2025244 PMAQI
28th Jul 2025205 PMAQI
28th Jul 2025236 PMAQI
28th Jul 2025217 PMAQI
28th Jul 2025228 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20252511 PMAQI
29th Jul 20252412 AMAQI
29th Jul 2025261 AMAQI
29th Jul 2025272 AMAQI
29th Jul 2025273 AMAQI
29°C26/32°C
29th Jul 2025274 AMAQI
29th Jul 2025265 AMAQI
29th Jul 2025276 AMAQI
29th Jul 2025267 AMAQI
29th Jul 2025278 AMAQI
29th Jul 2025299 AMAQI
29th Jul 20253410 AMAQI
29th Jul 20254311 AMAQI
29th Jul 20254812 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025413 PMAQI
29th Jul 2025354 PMAQI
29th Jul 2025285 PMAQI
29th Jul 2025246 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025258 PMAQI
29th Jul 2025249 PMAQI
29th Jul 20252310 PMAQI
29th Jul 20252311 PMAQI
30th Jul 20252412 AMAQI
30th Jul 2025261 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025273 AMAQI
29°C26/32°C
30th Jul 2025284 AMAQI
30th Jul 2025315 AMAQI
30th Jul 2025306 AMAQI
30th Jul 2025307 AMAQI
30th Jul 2025308 AMAQI
30th Jul 2025309 AMAQI
30th Jul 20252810 AMAQI
30th Jul 20254011 AMAQI
30th Jul 20254512 PMAQI
30th Jul 2025441 PMAQI
30th Jul 2025452 PMAQI
30th Jul 2025443 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025465 PMAQI
30th Jul 2025516 PMAQI
30th Jul 2025477 PMAQI
30th Jul 2025398 PMAQI
30th Jul 2025359 PMAQI
30th Jul 20253510 PMAQI
30th Jul 20253811 PMAQI
31st Jul 20253812 AMAQI
31st Jul 2025321 AMAQI
31st Jul 2025282 AMAQI
31st Jul 2025283 AMAQI
29°C26/32°C
31st Jul 2025284 AMAQI
31st Jul 2025285 AMAQI
31st Jul 2025286 AMAQI
31st Jul 2025287 AMAQI
31st Jul 2025288 AMAQI
31st Jul 2025289 AMAQI
31st Jul 20252810 AMAQI
31st Jul 20254511 AMAQI
31st Jul 20255312 PMAQI
31st Jul 2025501 PMAQI
31st Jul 2025442 PMAQI
31st Jul 2025383 PMAQI
31st Jul 2025404 PMAQI
31st Jul 2025405 PMAQI
31st Jul 2025416 PMAQI
31st Jul 2025427 PMAQI
31st Jul 2025388 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20253610 PMAQI
31st Jul 20253911 PMAQI
1st Aug 20253212 AMAQI
1st Aug 2025361 AMAQI
1st Aug 2025302 AMAQI
1st Aug 2025323 AMAQI
29°C27/32°C
1st Aug 2025324 AMAQI
1st Aug 2025355 AMAQI
1st Aug 2025356 AMAQI
1st Aug 2025347 AMAQI
1st Aug 2025348 AMAQI
1st Aug 2025419 AMAQI
1st Aug 20254310 AMAQI
1st Aug 20254811 AMAQI
1st Aug 20254612 PMAQI
1st Aug 2025501 PMAQI
1st Aug 2025622 PMAQI
1st Aug 2025553 PMAQI
1st Aug 2025644 PMAQI
1st Aug 2025655 PMAQI
1st Aug 2025686 PMAQI
1st Aug 2025727 PMAQI
1st Aug 2025578 PMAQI
1st Aug 2025419 PMAQI
1st Aug 20254110 PMAQI
1st Aug 20254411 PMAQI
2nd Aug 20253712 AMAQI
2nd Aug 2025331 AMAQI
2nd Aug 2025342 AMAQI
2nd Aug 2025343 AMAQI
30°C26/36°C
2nd Aug 2025374 AMAQI
2nd Aug 2025405 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025398 AMAQI
2nd Aug 2025479 AMAQI
2nd Aug 20254710 AMAQI
2nd Aug 20254911 AMAQI
2nd Aug 20255012 PMAQI
2nd Aug 2025541 PMAQI
2nd Aug 2025602 PMAQI
2nd Aug 2025543 PMAQI
2nd Aug 2025584 PMAQI
2nd Aug 2025575 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025497 PMAQI
2nd Aug 2025478 PMAQI
2nd Aug 2025409 PMAQI
2nd Aug 20253810 PMAQI
2nd Aug 20254211 PMAQI
3rd Aug 20254212 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
30°C27/36°C
3rd Aug 2025404 AMAQI
3rd Aug 2025415 AMAQI
3rd Aug 2025406 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025408 AMAQI
3rd Aug 2025469 AMAQI
3rd Aug 20255310 AMAQI
3rd Aug 20255811 AMAQI
3rd Aug 20255812 PMAQI
3rd Aug 2025551 PMAQI
3rd Aug 2025542 PMAQI
3rd Aug 2025553 PMAQI
3rd Aug 2025544 PMAQI
3rd Aug 2025495 PMAQI
3rd Aug 2025456 PMAQI
3rd Aug 2025477 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025449 PMAQI
3rd Aug 20254410 PMAQI
3rd Aug 20254411 PMAQI
4th Aug 20254112 AMAQI
4th Aug 2025401 AMAQI
4th Aug 2025402 AMAQI
4th Aug 2025403 AMAQI
30°C27/34°C
4th Aug 2025434 AMAQI
4th Aug 2025435 AMAQI
4th Aug 2025436 AMAQI
4th Aug 2025447 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025729 AMAQI
4th Aug 20258710 AMAQI
4th Aug 20258911 AMAQI
4th Aug 20259012 PMAQI
4th Aug 2025921 PMAQI
4th Aug 2025852 PMAQI
4th Aug 2025953 PMAQI
4th Aug 2025994 PMAQI
4th Aug 2025995 PMAQI
4th Aug 2025916 PMAQI
4th Aug 2025807 PMAQI
4th Aug 2025648 PMAQI
4th Aug 2025579 PMAQI
4th Aug 20255310 PMAQI
4th Aug 20254611 PMAQI
5th Aug 20254812 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025432 AMAQI
5th Aug 2025423 AMAQI
29°C28/31°C
5th Aug 2025524 AMAQI
4 AM5th Aug 2025555 AMAQI
5th Aug 2025556 AMAQI
5th Aug 2025577 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025579 AMAQI
5th Aug 20255810 AMAQI
5th Aug 20255311 AMAQI
11 AM5th Aug 20255812 PMAQI
5th Aug 2025551 PMAQI
5th Aug 2025492 PMAQI
5th Aug 2025463 PMAQI
5th Aug 2025484 PMAQI
5th Aug 2025445 PMAQI
5th Aug 2025456 PMAQI
5th Aug 2025437 PMAQI
7 PM5th Aug 2025488 PMAQI
5th Aug 2025479 PMAQI
5th Aug 20254710 PMAQI
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
46AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
9 AM - 7 PM
43AQI
11 hours / Day
330 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 46), while the lowest AQI was between 9 AM to 7 PM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 3 AM
45AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM - 11 PM
43AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 45), while the lowest AQI was between 8 PM to 11 PM (Avg. 43).
2025 Days Vs Air Quality
Kosai, Shizuoka, Japan
2025
88%
190
12%
25
0.4%
1
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
190 DaysModerate
25 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% 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
Kosai, Shizuoka, 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
32AQI
32AQI
3rd January 2025
32AQI
32AQI
4th January 2025
29AQI
29AQI
5th January 2025
31AQI
31AQI
6th January 2025
27AQI
27AQI
7th January 2025
30AQI
30AQI
8th January 2025
26AQI
26AQI
9th January 2025
30AQI
30AQI
10th January 2025
26AQI
26AQI
11th January 2025
28AQI
28AQI
12th January 2025
27AQI
27AQI
13th January 2025
30AQI
30AQI
14th January 2025
40AQI
40AQI
15th January 2025
37AQI
37AQI
16th January 2025
29AQI
29AQI
17th January 2025
30AQI
30AQI
18th January 2025
30AQI
30AQI
19th January 2025
30AQI
30AQI
20th January 2025
33AQI
33AQI
21st January 2025
33AQI
33AQI
22nd January 2025
34AQI
34AQI
23rd January 2025
56AQI
56AQI
24th January 2025
47AQI
47AQI
25th January 2025
42AQI
42AQI
26th January 2025
38AQI
38AQI
27th January 2025
29AQI
29AQI
28th January 2025
34AQI
34AQI
29th January 2025
30AQI
30AQI
30th January 2025
32AQI
32AQI
31st January 2025
44AQI
44AQI
1st February 2025
49AQI
49AQI
2nd February 2025
37AQI
37AQI
3rd February 2025
41AQI
41AQI
4th February 2025
33AQI
33AQI
5th February 2025
34AQI
34AQI
6th February 2025
31AQI
31AQI
7th February 2025
35AQI
35AQI
8th February 2025
31AQI
31AQI
9th February 2025
31AQI
31AQI
10th February 2025
31AQI
31AQI
11th February 2025
33AQI
33AQI
12th February 2025
30AQI
30AQI
13th February 2025
32AQI
32AQI
14th February 2025
32AQI
32AQI
15th February 2025
31AQI
31AQI
16th February 2025
35AQI
35AQI
17th February 2025
38AQI
38AQI
18th February 2025
32AQI
32AQI
19th February 2025
32AQI
32AQI
20th February 2025
31AQI
31AQI
21st February 2025
31AQI
31AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
33AQI
33AQI
24th February 2025
34AQI
34AQI
25th February 2025
37AQI
37AQI
26th February 2025
40AQI
40AQI
27th February 2025
45AQI
45AQI
28th February 2025
53AQI
53AQI
1st March 2025
47AQI
47AQI
2nd March 2025
54AQI
54AQI
3rd March 2025
38AQI
38AQI
4th March 2025
37AQI
37AQI
5th March 2025
26AQI
26AQI
6th March 2025
33AQI
33AQI
7th March 2025
32AQI
32AQI
8th March 2025
33AQI
33AQI
9th March 2025
34AQI
34AQI
10th March 2025
36AQI
36AQI
11th March 2025
32AQI
32AQI
12th March 2025
32AQI
32AQI
13th March 2025
44AQI
44AQI
14th March 2025
33AQI
33AQI
15th March 2025
39AQI
39AQI
16th March 2025
20AQI
20AQI
17th March 2025
21AQI
21AQI
18th March 2025
21AQI
21AQI
19th March 2025
19AQI
19AQI
20th March 2025
32AQI
32AQI
21st March 2025
52AQI
52AQI
22nd March 2025
52AQI
52AQI
23rd March 2025
63AQI
63AQI
24th March 2025
61AQI
61AQI
25th March 2025
67AQI
67AQI
26th March 2025
110AQI
110AQI
27th March 2025
75AQI
75AQI
28th March 2025
62AQI
62AQI
29th March 2025
43AQI
43AQI
30th March 2025
39AQI
39AQI
31st March 2025
34AQI
34AQI
1st April 2025
31AQI
31AQI
2nd April 2025
30AQI
30AQI
3rd April 2025
24AQI
24AQI
4th April 2025
22AQI
22AQI
5th April 2025
28AQI
28AQI
6th April 2025
26AQI
26AQI
7th April 2025
36AQI
36AQI
8th April 2025
39AQI
39AQI
9th April 2025
37AQI
37AQI
10th April 2025
49AQI
49AQI
11th April 2025
46AQI
46AQI
12th April 2025
50AQI
50AQI
13th April 2025
33AQI
33AQI
14th April 2025
49AQI
49AQI
15th April 2025
23AQI
23AQI
16th April 2025
42AQI
42AQI
17th April 2025
45AQI
45AQI
18th April 2025
52AQI
52AQI
19th April 2025
61AQI
61AQI
20th April 2025
48AQI
48AQI
21st April 2025
49AQI
49AQI
22nd April 2025
43AQI
43AQI
23rd April 2025
32AQI
32AQI
24th April 2025
32AQI
32AQI
25th April 2025
47AQI
47AQI
26th April 2025
48AQI
48AQI
27th April 2025
54AQI
54AQI
28th April 2025
45AQI
45AQI
29th April 2025
47AQI
47AQI
30th April 2025
53AQI
53AQI
1st May 2025
47AQI
47AQI
2nd May 2025
32AQI
32AQI
3rd May 2025
37AQI
37AQI
4th May 2025
33AQI
33AQI
5th May 2025
34AQI
34AQI
6th May 2025
26AQI
26AQI
7th May 2025
28AQI
28AQI
8th May 2025
29AQI
29AQI
9th May 2025
30AQI
30AQI
10th May 2025
23AQI
23AQI
11th May 2025
25AQI
25AQI
12th May 2025
34AQI
34AQI
13th May 2025
45AQI
45AQI
14th May 2025
46AQI
46AQI
15th May 2025
47AQI
47AQI
16th May 2025
47AQI
47AQI
17th May 2025
36AQI
36AQI
18th May 2025
49AQI
49AQI
19th May 2025
47AQI
47AQI
20th May 2025
59AQI
59AQI
21st May 2025
41AQI
41AQI
22nd May 2025
35AQI
35AQI
23rd May 2025
42AQI
42AQI
24th May 2025
38AQI
38AQI
25th May 2025
23AQI
23AQI
26th May 2025
29AQI
29AQI
27th May 2025
28AQI
28AQI
28th May 2025
28AQI
28AQI
29th May 2025
33AQI
33AQI
30th May 2025
29AQI
29AQI
31st May 2025
27AQI
27AQI
1st June 2025
23AQI
23AQI
2nd June 2025
33AQI
33AQI
3rd June 2025
26AQI
26AQI
4th June 2025
36AQI
36AQI
5th June 2025
42AQI
42AQI
6th June 2025
46AQI
46AQI
7th June 2025
50AQI
50AQI
8th June 2025
58AQI
58AQI
9th June 2025
41AQI
41AQI
10th June 2025
29AQI
29AQI
11th June 2025
29AQI
29AQI
12th June 2025
40AQI
40AQI
13th June 2025
39AQI
39AQI
14th June 2025
31AQI
31AQI
15th June 2025
26AQI
26AQI
16th June 2025
36AQI
36AQI
17th June 2025
39AQI
39AQI
18th June 2025
44AQI
44AQI
19th June 2025
48AQI
48AQI
20th June 2025
38AQI
38AQI
21st June 2025
31AQI
31AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
24AQI
24AQI
24th June 2025
22AQI
22AQI
25th June 2025
22AQI
22AQI
26th June 2025
22AQI
22AQI
27th June 2025
31AQI
31AQI
28th June 2025
34AQI
34AQI
29th June 2025
33AQI
33AQI
30th June 2025
38AQI
38AQI
1st July 2025
42AQI
42AQI
2nd July 2025
44AQI
44AQI
3rd July 2025
48AQI
48AQI
4th July 2025
47AQI
47AQI
5th July 2025
75AQI
75AQI
6th July 2025
62AQI
62AQI
7th July 2025
75AQI
75AQI
8th July 2025
81AQI
81AQI
9th July 2025
75AQI
75AQI
10th July 2025
56AQI
56AQI
11th July 2025
53AQI
53AQI
12th July 2025
52AQI
52AQI
13th July 2025
50AQI
50AQI
14th July 2025
44AQI
44AQI
15th July 2025
48AQI
48AQI
16th July 2025
46AQI
46AQI
17th July 2025
47AQI
47AQI
18th July 2025
41AQI
41AQI
19th July 2025
35AQI
35AQI
20th July 2025
33AQI
33AQI
21st July 2025
31AQI
31AQI
22nd July 2025
29AQI
29AQI
23rd July 2025
27AQI
27AQI
24th July 2025
27AQI
27AQI
25th July 2025
25AQI
25AQI
26th July 2025
25AQI
25AQI
27th July 2025
23AQI
23AQI
28th July 2025
25AQI
25AQI
29th July 2025
30AQI
30AQI
30th July 2025
36AQI
36AQI
31st July 2025
35AQI
35AQI
1st August 2025
46AQI
46AQI
2nd August 2025
44AQI
44AQI
3rd August 2025
45AQI
45AQI
4th August 2025
52AQI
52AQI
33AQI
35AQI
43AQI
41AQI
36AQI
35AQI
44AQI
47AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202538AQI
30
1
27
1
22
8
1
26
4
30
1
29
1
23
8
3
1
190
25
1
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
January33AQI
202437AQI
29
2
27
2
26
5
14
10
6
29
2
27
3
26
5
28
3
28
2
30
1
29
1
31
324
36
6
Highest AQI recorded in
April64AQI
Lowest AQI recorded in
December29AQI
202339AQI
28
3
24
4
24
7
18
12
27
4
21
9
25
6
30
1
29
1
29
2
22
7
27
4
304
60
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
August26AQI
202237AQI
31
20
2
23
8
21
8
20
11
28
2
18
3
1
28
28
3
27
3
31
276
40
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
December29AQI
202134AQI
26
5
23
5
28
2
1
27
3
28
3
25
5
31
29
2
26
4
31
25
5
30
1
329
35
1
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
January26AQI
202030AQI
12
2
19
29
2
27
3
29
2
116
9
Highest AQI recorded in
August36AQI
Lowest AQI recorded in
December26AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
39AQILeast Polluted Year Recorded
2020(Avg.)
30AQIKosai's annual 2025 AQI (38) shows an average percentage change of 9.1% (worsened AQI) compared to previous years: 2020 (30), 2021 (34), 2022 (37), 2023 (39), 2024 (37).
