Katakuramachi, Hachioji, Tokyo, 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
Katakuramachi, Hachioji, Tokyo, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2022
63AQILowest AQI recorded on
18th Aug 2021
10AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Katakuramachi, Hachioji, Tokyo, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
2PM4th Aug
94AQI
Avg. Lowest Time
8AM4th Aug
44AQI
Night time
Avg. Highest Time
7PM4th Aug
76AQI
Avg. Lowest Time
3AM5th Aug
42AQI
In the last 24 hours,
Katakuramachi's AQI reached its highest point of 94 at 2 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
Katakuramachi, Hachioji, Tokyo, 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 2025464 AMAQI
6th Jul 2025495 AMAQI
6th Jul 2025496 AMAQI
6th Jul 2025497 AMAQI
6th Jul 2025508 AMAQI
6th Jul 2025569 AMAQI
6th Jul 20256110 AMAQI
6th Jul 20256311 AMAQI
6th Jul 20256412 PMAQI
6th Jul 2025631 PMAQI
6th Jul 2025652 PMAQI
6th Jul 2025633 PMAQI
6th Jul 2025604 PMAQI
6th Jul 2025595 PMAQI
6th Jul 2025706 PMAQI
6th Jul 2025897 PMAQI
6th Jul 2025818 PMAQI
6th Jul 2025689 PMAQI
6th Jul 20256810 PMAQI
6th Jul 20256811 PMAQI
7th Jul 20256712 AMAQI
7th Jul 2025601 AMAQI
7th Jul 2025502 AMAQI
7th Jul 2025503 AMAQI
29°C25/34°C
7th Jul 2025524 AMAQI
7th Jul 2025535 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025859 AMAQI
7th Jul 20259810 AMAQI
7th Jul 20259811 AMAQI
7th Jul 20259212 PMAQI
7th Jul 2025841 PMAQI
7th Jul 2025822 PMAQI
7th Jul 2025883 PMAQI
7th Jul 2025944 PMAQI
7th Jul 2025955 PMAQI
7th Jul 20251016 PMAQI
7th Jul 20251067 PMAQI
7th Jul 2025998 PMAQI
7th Jul 2025779 PMAQI
7th Jul 20257910 PMAQI
7th Jul 20257811 PMAQI
8th Jul 20258012 AMAQI
8th Jul 2025681 AMAQI
8th Jul 2025552 AMAQI
8th Jul 2025553 AMAQI
29°C26/33°C
8th Jul 2025584 AMAQI
8th Jul 2025625 AMAQI
8th Jul 2025626 AMAQI
8th Jul 2025627 AMAQI
8th Jul 2025628 AMAQI
8th Jul 20251149 AMAQI
8th Jul 202513210 AMAQI
8th Jul 202511711 AMAQI
8th Jul 202510312 PMAQI
8th Jul 2025901 PMAQI
8th Jul 2025882 PMAQI
8th Jul 2025823 PMAQI
8th Jul 2025784 PMAQI
8th Jul 2025805 PMAQI
8th Jul 2025846 PMAQI
8th Jul 2025887 PMAQI
8th Jul 2025888 PMAQI
8th Jul 2025789 PMAQI
8th Jul 20257810 PMAQI
8th Jul 20257811 PMAQI
9th Jul 20257812 AMAQI
9th Jul 2025741 AMAQI
9th Jul 2025632 AMAQI
9th Jul 2025633 AMAQI
29°C26/33°C
9th Jul 2025664 AMAQI
9th Jul 2025705 AMAQI
9th Jul 2025706 AMAQI
9th Jul 2025697 AMAQI
9th Jul 2025708 AMAQI
9th Jul 2025849 AMAQI
9th Jul 20259210 AMAQI
9th Jul 20259011 AMAQI
9th Jul 20259912 PMAQI
9th Jul 20251111 PMAQI
9th Jul 20251082 PMAQI
9th Jul 20251023 PMAQI
9th Jul 2025984 PMAQI
9th Jul 2025975 PMAQI
9th Jul 2025956 PMAQI
9th Jul 2025867 PMAQI
9th Jul 2025758 PMAQI
9th Jul 2025749 PMAQI
9th Jul 20256410 PMAQI
9th Jul 20256311 PMAQI
10th Jul 20256212 AMAQI
10th Jul 2025661 AMAQI
10th Jul 2025702 AMAQI
10th Jul 2025703 AMAQI
29°C25/33°C
10th Jul 2025714 AMAQI
10th Jul 2025735 AMAQI
10th Jul 2025746 AMAQI
10th Jul 2025727 AMAQI
10th Jul 2025748 AMAQI
10th Jul 2025779 AMAQI
10th Jul 20258210 AMAQI
10th Jul 20259511 AMAQI
10th Jul 20258812 PMAQI
10th Jul 2025761 PMAQI
10th Jul 2025802 PMAQI
10th Jul 2025663 PMAQI
10th Jul 2025564 PMAQI
10th Jul 2025405 PMAQI
10th Jul 2025336 PMAQI
10th Jul 2025377 PMAQI
10th Jul 2025448 PMAQI
10th Jul 2025589 PMAQI
10th Jul 20255810 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025621 AMAQI
11th Jul 2025692 AMAQI
11th Jul 2025683 AMAQI
28°C23/34°C
11th Jul 2025694 AMAQI
11th Jul 2025695 AMAQI
11th Jul 2025706 AMAQI
11th Jul 2025707 AMAQI
11th Jul 2025698 AMAQI
11th Jul 2025349 AMAQI
11th Jul 20252010 AMAQI
11th Jul 20252111 AMAQI
11th Jul 20252512 PMAQI
11th Jul 2025371 PMAQI
11th Jul 2025262 PMAQI
11th Jul 2025293 PMAQI
11th Jul 2025304 PMAQI
11th Jul 2025355 PMAQI
11th Jul 2025346 PMAQI
11th Jul 2025307 PMAQI
11th Jul 2025418 PMAQI
11th Jul 2025559 PMAQI
11th Jul 20255610 PMAQI
11th Jul 20255611 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025581 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI
23°C22/24°C
12th Jul 2025644 AMAQI
12th Jul 2025615 AMAQI
12th Jul 2025616 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025618 AMAQI
12th Jul 2025379 AMAQI
12th Jul 20253210 AMAQI
12th Jul 20253611 AMAQI
12th Jul 20253812 PMAQI
12th Jul 2025451 PMAQI
12th Jul 2025492 PMAQI
12th Jul 2025483 PMAQI
12th Jul 2025524 PMAQI
12th Jul 2025525 PMAQI
12th Jul 2025526 PMAQI
12th Jul 2025537 PMAQI
12th Jul 2025558 PMAQI
12th Jul 2025579 PMAQI
12th Jul 20255710 PMAQI
12th Jul 20255711 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025561 AMAQI
13th Jul 2025612 AMAQI
13th Jul 2025613 AMAQI
24°C20/28°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025587 AMAQI
13th Jul 2025588 AMAQI
13th Jul 2025499 AMAQI
13th Jul 20254210 AMAQI
13th Jul 20254711 AMAQI
13th Jul 20254912 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025492 PMAQI
13th Jul 2025473 PMAQI
13th Jul 2025404 PMAQI
13th Jul 2025325 PMAQI
13th Jul 2025346 PMAQI
13th Jul 2025377 PMAQI
13th Jul 2025468 PMAQI
13th Jul 2025539 PMAQI
13th Jul 20255210 PMAQI
13th Jul 20255211 PMAQI
14th Jul 20254912 AMAQI
14th Jul 2025551 AMAQI
14th Jul 2025592 AMAQI
14th Jul 2025593 AMAQI
26°C23/29°C
14th Jul 2025584 AMAQI
14th Jul 2025575 AMAQI
14th Jul 2025586 AMAQI
14th Jul 2025577 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025289 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20251711 AMAQI
14th Jul 20252012 PMAQI
14th Jul 2025261 PMAQI
14th Jul 2025232 PMAQI
14th Jul 2025233 PMAQI
14th Jul 2025254 PMAQI
14th Jul 2025285 PMAQI
14th Jul 2025316 PMAQI
14th Jul 2025277 PMAQI
14th Jul 2025308 PMAQI
14th Jul 2025489 PMAQI
14th Jul 20255010 PMAQI
14th Jul 20254811 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025511 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
25°C23/29°C
15th Jul 2025554 AMAQI
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20251210 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20252112 PMAQI
15th Jul 2025331 PMAQI
15th Jul 2025302 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025284 PMAQI
15th Jul 2025265 PMAQI
15th Jul 2025246 PMAQI
15th Jul 2025207 PMAQI
15th Jul 2025278 PMAQI
15th Jul 2025429 PMAQI
15th Jul 20254410 PMAQI
15th Jul 20254311 PMAQI
16th Jul 20254412 AMAQI
16th Jul 2025461 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025543 AMAQI
26°C25/30°C
16th Jul 2025534 AMAQI
16th Jul 2025525 AMAQI
16th Jul 2025516 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025559 AMAQI
16th Jul 20255610 AMAQI
16th Jul 20255411 AMAQI
16th Jul 20254112 PMAQI
16th Jul 2025341 PMAQI
16th Jul 2025322 PMAQI
16th Jul 2025303 PMAQI
16th Jul 2025294 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025326 PMAQI
16th Jul 2025317 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025429 PMAQI
16th Jul 20254310 PMAQI
16th Jul 20254311 PMAQI
17th Jul 20254112 AMAQI
17th Jul 2025461 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
27°C23/31°C
17th Jul 2025524 AMAQI
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025269 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20254811 AMAQI
17th Jul 20254212 PMAQI
17th Jul 2025361 PMAQI
17th Jul 2025352 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025374 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025377 PMAQI
17th Jul 2025408 PMAQI
17th Jul 2025459 PMAQI
17th Jul 20254410 PMAQI
17th Jul 20254611 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025441 AMAQI
18th Jul 2025492 AMAQI
18th Jul 2025503 AMAQI
27°C24/32°C
18th Jul 2025484 AMAQI
18th Jul 2025465 AMAQI
18th Jul 2025466 AMAQI
18th Jul 2025467 AMAQI
18th Jul 2025468 AMAQI
18th Jul 2025349 AMAQI
18th Jul 20253010 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252912 PMAQI
18th Jul 2025261 PMAQI
18th Jul 2025282 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025244 PMAQI
18th Jul 2025245 PMAQI
18th Jul 2025266 PMAQI
18th Jul 2025237 PMAQI
18th Jul 2025298 PMAQI
18th Jul 2025399 PMAQI
18th Jul 20254010 PMAQI
18th Jul 20253811 PMAQI
19th Jul 20253812 AMAQI
19th Jul 2025401 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025473 AMAQI
27°C23/32°C
19th Jul 2025454 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025426 AMAQI
19th Jul 2025427 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025339 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20252211 AMAQI
19th Jul 20252512 PMAQI
19th Jul 2025311 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025246 PMAQI
19th Jul 2025297 PMAQI
19th Jul 2025338 PMAQI
19th Jul 2025379 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253811 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025391 AMAQI
20th Jul 2025422 AMAQI
20th Jul 2025443 AMAQI
27°C24/32°C
20th Jul 2025424 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025359 AMAQI
20th Jul 20252910 AMAQI
20th Jul 20252811 AMAQI
20th Jul 20252812 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025302 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025306 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025369 PMAQI
20th Jul 20253510 PMAQI
20th Jul 20253611 PMAQI
21st Jul 20253612 AMAQI
21st Jul 2025371 AMAQI
21st Jul 2025402 AMAQI
21st Jul 2025413 AMAQI
29°C24/33°C
21st Jul 2025404 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025397 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025429 AMAQI
21st Jul 20255010 AMAQI
21st Jul 20255011 AMAQI
21st Jul 20254812 PMAQI
21st Jul 2025461 PMAQI
21st Jul 2025402 PMAQI
21st Jul 2025423 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025325 PMAQI
21st Jul 2025316 PMAQI
21st Jul 2025347 PMAQI
21st Jul 2025338 PMAQI
21st Jul 2025369 PMAQI
21st Jul 20253710 PMAQI
21st Jul 20253311 PMAQI
22nd Jul 20253412 AMAQI
22nd Jul 2025341 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025383 AMAQI
29°C25/34°C
22nd Jul 2025394 AMAQI
22nd Jul 2025405 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025407 AMAQI
22nd Jul 2025418 AMAQI
22nd Jul 2025499 AMAQI
22nd Jul 20255410 AMAQI
22nd Jul 20255611 AMAQI
22nd Jul 20255812 PMAQI
22nd Jul 2025551 PMAQI
22nd Jul 2025552 PMAQI
22nd Jul 2025583 PMAQI
22nd Jul 2025484 PMAQI
22nd Jul 2025375 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025397 PMAQI
22nd Jul 2025398 PMAQI
22nd Jul 2025389 PMAQI
22nd Jul 20253310 PMAQI
22nd Jul 20253811 PMAQI
23rd Jul 20253912 AMAQI
23rd Jul 2025391 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025383 AMAQI
30°C26/35°C
23rd Jul 2025404 AMAQI
23rd Jul 2025425 AMAQI
23rd Jul 2025426 AMAQI
23rd Jul 2025427 AMAQI
23rd Jul 2025428 AMAQI
23rd Jul 2025529 AMAQI
23rd Jul 20255810 AMAQI
23rd Jul 20256511 AMAQI
23rd Jul 20256612 PMAQI
23rd Jul 2025641 PMAQI
23rd Jul 2025522 PMAQI
23rd Jul 2025573 PMAQI
23rd Jul 2025564 PMAQI
23rd Jul 2025505 PMAQI
23rd Jul 2025446 PMAQI
23rd Jul 2025377 PMAQI
23rd Jul 2025348 PMAQI
23rd Jul 2025389 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253412 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025402 AMAQI
24th Jul 2025403 AMAQI
30°C26/35°C
24th Jul 2025434 AMAQI
24th Jul 2025455 AMAQI
24th Jul 2025456 AMAQI
24th Jul 2025467 AMAQI
24th Jul 2025468 AMAQI
24th Jul 2025559 AMAQI
24th Jul 20255810 AMAQI
24th Jul 20256311 AMAQI
24th Jul 20256512 PMAQI
24th Jul 2025601 PMAQI
24th Jul 2025592 PMAQI
24th Jul 2025573 PMAQI
24th Jul 2025534 PMAQI
24th Jul 2025485 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025397 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025409 PMAQI
24th Jul 20254510 PMAQI
24th Jul 20254611 PMAQI
25th Jul 20254612 AMAQI
25th Jul 2025441 AMAQI
25th Jul 2025422 AMAQI
25th Jul 2025413 AMAQI
30°C26/35°C
25th Jul 2025434 AMAQI
25th Jul 2025485 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025467 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025539 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20255611 AMAQI
25th Jul 20256012 PMAQI
25th Jul 2025561 PMAQI
25th Jul 2025502 PMAQI
25th Jul 2025453 PMAQI
25th Jul 2025454 PMAQI
25th Jul 2025315 PMAQI
25th Jul 2025276 PMAQI
25th Jul 2025287 PMAQI
25th Jul 2025348 PMAQI
25th Jul 2025449 PMAQI
25th Jul 20254610 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025451 AMAQI
26th Jul 2025452 AMAQI
26th Jul 2025463 AMAQI
30°C26/35°C
26th Jul 2025464 AMAQI
26th Jul 2025485 AMAQI
26th Jul 2025466 AMAQI
26th Jul 2025477 AMAQI
26th Jul 2025478 AMAQI
26th Jul 2025529 AMAQI
26th Jul 20255410 AMAQI
26th Jul 20255311 AMAQI
26th Jul 20255412 PMAQI
26th Jul 2025511 PMAQI
26th Jul 2025472 PMAQI
26th Jul 2025343 PMAQI
26th Jul 2025304 PMAQI
26th Jul 2025305 PMAQI
26th Jul 2025316 PMAQI
26th Jul 2025347 PMAQI
26th Jul 2025378 PMAQI
26th Jul 2025399 PMAQI
26th Jul 20254210 PMAQI
26th Jul 20254111 PMAQI
27th Jul 20254512 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025452 AMAQI
27th Jul 2025453 AMAQI
30°C26/36°C
27th Jul 2025464 AMAQI
27th Jul 2025475 AMAQI
27th Jul 2025486 AMAQI
27th Jul 2025487 AMAQI
27th Jul 2025478 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20254010 AMAQI
27th Jul 20253911 AMAQI
27th Jul 20254612 PMAQI
27th Jul 2025421 PMAQI
27th Jul 2025372 PMAQI
27th Jul 2025363 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025295 PMAQI
27th Jul 2025266 PMAQI
27th Jul 2025257 PMAQI
27th Jul 2025258 PMAQI
27th Jul 2025359 PMAQI
27th Jul 20253810 PMAQI
27th Jul 20254011 PMAQI
28th Jul 20253612 AMAQI
28th Jul 2025371 AMAQI
28th Jul 2025462 AMAQI
28th Jul 2025463 AMAQI
30°C26/35°C
28th Jul 2025454 AMAQI
28th Jul 2025445 AMAQI
28th Jul 2025456 AMAQI
28th Jul 2025447 AMAQI
28th Jul 2025448 AMAQI
28th Jul 2025429 AMAQI
28th Jul 20255110 AMAQI
28th Jul 20255411 AMAQI
28th Jul 20255212 PMAQI
28th Jul 2025511 PMAQI
28th Jul 2025562 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025554 PMAQI
28th Jul 2025505 PMAQI
28th Jul 2025466 PMAQI
28th Jul 2025457 PMAQI
28th Jul 2025448 PMAQI
28th Jul 2025409 PMAQI
28th Jul 20254010 PMAQI
28th Jul 20253811 PMAQI
29th Jul 20253712 AMAQI
29th Jul 2025361 AMAQI
29th Jul 2025422 AMAQI
29th Jul 2025423 AMAQI
30°C26/35°C
29th Jul 2025424 AMAQI
29th Jul 2025445 AMAQI
29th Jul 2025446 AMAQI
29th Jul 2025447 AMAQI
29th Jul 2025448 AMAQI
29th Jul 2025539 AMAQI
29th Jul 20255810 AMAQI
29th Jul 20255811 AMAQI
29th Jul 20255512 PMAQI
29th Jul 2025521 PMAQI
29th Jul 2025462 PMAQI
29th Jul 2025543 PMAQI
29th Jul 2025544 PMAQI
29th Jul 2025555 PMAQI
29th Jul 2025506 PMAQI
29th Jul 2025397 PMAQI
29th Jul 2025358 PMAQI
29th Jul 2025369 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253611 PMAQI
30th Jul 20253312 AMAQI
30th Jul 2025341 AMAQI
30th Jul 2025412 AMAQI
30th Jul 2025423 AMAQI
30°C25/36°C
30th Jul 2025424 AMAQI
30th Jul 2025445 AMAQI
30th Jul 2025446 AMAQI
30th Jul 2025447 AMAQI
30th Jul 2025448 AMAQI
30th Jul 2025249 AMAQI
30th Jul 20251910 AMAQI
30th Jul 20251811 AMAQI
30th Jul 20252412 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025312 PMAQI
30th Jul 2025323 PMAQI
30th Jul 2025324 PMAQI
30th Jul 2025365 PMAQI
30th Jul 2025326 PMAQI
30th Jul 2025297 PMAQI
30th Jul 2025298 PMAQI
30th Jul 2025369 PMAQI
30th Jul 20253710 PMAQI
30th Jul 20254011 PMAQI
31st Jul 20253912 AMAQI
31st Jul 2025391 AMAQI
31st Jul 2025412 AMAQI
31st Jul 2025423 AMAQI
29°C25/35°C
31st Jul 2025414 AMAQI
31st Jul 2025415 AMAQI
31st Jul 2025416 AMAQI
31st Jul 2025417 AMAQI
31st Jul 2025418 AMAQI
31st Jul 2025419 AMAQI
31st Jul 20254110 AMAQI
31st Jul 20254311 AMAQI
31st Jul 20255112 PMAQI
31st Jul 2025481 PMAQI
31st Jul 2025502 PMAQI
31st Jul 2025443 PMAQI
31st Jul 2025364 PMAQI
31st Jul 2025405 PMAQI
31st Jul 2025326 PMAQI
31st Jul 2025267 PMAQI
31st Jul 2025288 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253210 PMAQI
31st Jul 20252811 PMAQI
1st Aug 20252912 AMAQI
1st Aug 2025361 AMAQI
1st Aug 2025352 AMAQI
1st Aug 2025363 AMAQI
28°C24/34°C
1st Aug 2025374 AMAQI
1st Aug 2025355 AMAQI
1st Aug 2025366 AMAQI
1st Aug 2025367 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025359 AMAQI
1st Aug 20252410 AMAQI
1st Aug 20254011 AMAQI
1st Aug 20254812 PMAQI
1st Aug 2025471 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025343 PMAQI
1st Aug 2025424 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025396 PMAQI
1st Aug 2025287 PMAQI
1st Aug 2025298 PMAQI
1st Aug 2025319 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252711 PMAQI
2nd Aug 20253012 AMAQI
2nd Aug 2025281 AMAQI
2nd Aug 2025372 AMAQI
2nd Aug 2025373 AMAQI
27°C24/31°C
2nd Aug 2025394 AMAQI
2nd Aug 2025395 AMAQI
2nd Aug 2025406 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025409 AMAQI
2nd Aug 20253810 AMAQI
2nd Aug 20254811 AMAQI
2nd Aug 20254012 PMAQI
2nd Aug 2025491 PMAQI
2nd Aug 2025562 PMAQI
2nd Aug 2025563 PMAQI
2nd Aug 2025574 PMAQI
2nd Aug 2025545 PMAQI
2nd Aug 2025586 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025378 PMAQI
2nd Aug 2025369 PMAQI
2nd Aug 20253410 PMAQI
2nd Aug 20254411 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025392 AMAQI
3rd Aug 2025383 AMAQI
30°C25/36°C
3rd Aug 2025404 AMAQI
3rd Aug 2025405 AMAQI
3rd Aug 2025406 AMAQI
3rd Aug 2025397 AMAQI
3rd Aug 2025398 AMAQI
3rd Aug 2025469 AMAQI
3rd Aug 20255610 AMAQI
3rd Aug 20255611 AMAQI
3rd Aug 20255912 PMAQI
3rd Aug 2025561 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025533 PMAQI
3rd Aug 2025534 PMAQI
3rd Aug 2025525 PMAQI
3rd Aug 2025536 PMAQI
3rd Aug 2025537 PMAQI
3rd Aug 2025528 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20254111 PMAQI
4th Aug 20253712 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025403 AMAQI
30°C26/36°C
4th Aug 2025454 AMAQI
4th Aug 2025455 AMAQI
4th Aug 2025446 AMAQI
4th Aug 2025447 AMAQI
4th Aug 2025448 AMAQI
4th Aug 2025609 AMAQI
4th Aug 20256410 AMAQI
4th Aug 20258011 AMAQI
4th Aug 20258212 PMAQI
4th Aug 2025881 PMAQI
4th Aug 2025942 PMAQI
4th Aug 2025843 PMAQI
4th Aug 2025914 PMAQI
4th Aug 2025905 PMAQI
4th Aug 2025876 PMAQI
4th Aug 2025767 PMAQI
4th Aug 2025668 PMAQI
4th Aug 2025609 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20255011 PMAQI
5th Aug 20255312 AMAQI
5th Aug 2025471 AMAQI
5th Aug 2025422 AMAQI
5th Aug 2025423 AMAQI
31°C27/37°C
5th Aug 2025514 AMAQI
4 AM5th Aug 2025535 AMAQI
5th Aug 2025536 AMAQI
5th Aug 2025537 AMAQI
5th Aug 2025528 AMAQI
5th Aug 2025569 AMAQI
5th Aug 20256010 AMAQI
5th Aug 20256111 AMAQI
11 AM5th Aug 20256212 PMAQI
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 6 PM
49AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
4 AM - 6 PM
49AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 6 PM (Avg. 49), while the lowest AQI was between 4 AM to 6 PM (Avg. 49).
Night time
Avg. Highest Time
12 AM - 3 AM
47AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM - 11 PM
45AQI
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. 47), while the lowest AQI was between 7 PM to 11 PM (Avg. 45).
2025 Days Vs Air Quality
Katakuramachi, Hachioji, Tokyo, Japan
2025
96%
207
4%
9
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
207 DaysModerate
9 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 217 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
Katakuramachi, Hachioji, Tokyo, 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
26AQI
26AQI
2nd January 2025
26AQI
26AQI
3rd January 2025
23AQI
23AQI
4th January 2025
24AQI
24AQI
5th January 2025
21AQI
21AQI
6th January 2025
24AQI
24AQI
7th January 2025
25AQI
25AQI
8th January 2025
28AQI
28AQI
9th January 2025
26AQI
26AQI
10th January 2025
24AQI
24AQI
11th January 2025
24AQI
24AQI
12th January 2025
25AQI
25AQI
13th January 2025
27AQI
27AQI
14th January 2025
24AQI
24AQI
15th January 2025
28AQI
28AQI
16th January 2025
23AQI
23AQI
17th January 2025
26AQI
26AQI
18th January 2025
25AQI
25AQI
19th January 2025
28AQI
28AQI
20th January 2025
27AQI
27AQI
21st January 2025
29AQI
29AQI
22nd January 2025
29AQI
29AQI
23rd January 2025
30AQI
30AQI
24th January 2025
33AQI
33AQI
25th January 2025
31AQI
31AQI
26th January 2025
30AQI
30AQI
27th January 2025
23AQI
23AQI
28th January 2025
28AQI
28AQI
29th January 2025
27AQI
27AQI
30th January 2025
24AQI
24AQI
31st January 2025
25AQI
25AQI
1st February 2025
27AQI
27AQI
2nd February 2025
29AQI
29AQI
3rd February 2025
24AQI
24AQI
4th February 2025
29AQI
29AQI
5th February 2025
27AQI
27AQI
6th February 2025
27AQI
27AQI
7th February 2025
27AQI
27AQI
8th February 2025
27AQI
27AQI
9th February 2025
28AQI
28AQI
10th February 2025
26AQI
26AQI
11th February 2025
27AQI
27AQI
12th February 2025
26AQI
26AQI
13th February 2025
29AQI
29AQI
14th February 2025
26AQI
26AQI
15th February 2025
27AQI
27AQI
16th February 2025
30AQI
30AQI
17th February 2025
32AQI
32AQI
18th February 2025
29AQI
29AQI
19th February 2025
28AQI
28AQI
20th February 2025
29AQI
29AQI
21st February 2025
29AQI
29AQI
22nd February 2025
27AQI
27AQI
23rd February 2025
30AQI
30AQI
24th February 2025
30AQI
30AQI
25th February 2025
31AQI
31AQI
26th February 2025
32AQI
32AQI
27th February 2025
35AQI
35AQI
28th February 2025
36AQI
36AQI
1st March 2025
43AQI
43AQI
2nd March 2025
41AQI
41AQI
3rd March 2025
33AQI
33AQI
4th March 2025
29AQI
29AQI
5th March 2025
24AQI
24AQI
6th March 2025
28AQI
28AQI
7th March 2025
30AQI
30AQI
8th March 2025
30AQI
30AQI
9th March 2025
34AQI
34AQI
10th March 2025
31AQI
31AQI
11th March 2025
31AQI
31AQI
12th March 2025
28AQI
28AQI
13th March 2025
33AQI
33AQI
14th March 2025
21AQI
21AQI
15th March 2025
19AQI
19AQI
16th March 2025
16AQI
16AQI
17th March 2025
16AQI
16AQI
18th March 2025
15AQI
15AQI
19th March 2025
14AQI
14AQI
20th March 2025
16AQI
16AQI
21st March 2025
20AQI
20AQI
22nd March 2025
24AQI
24AQI
23rd March 2025
27AQI
27AQI
24th March 2025
30AQI
30AQI
25th March 2025
48AQI
48AQI
26th March 2025
59AQI
59AQI
27th March 2025
56AQI
56AQI
28th March 2025
36AQI
36AQI
29th March 2025
29AQI
29AQI
30th March 2025
32AQI
32AQI
31st March 2025
26AQI
26AQI
1st April 2025
22AQI
22AQI
2nd April 2025
20AQI
20AQI
3rd April 2025
18AQI
18AQI
4th April 2025
19AQI
19AQI
5th April 2025
19AQI
19AQI
6th April 2025
15AQI
15AQI
7th April 2025
16AQI
16AQI
8th April 2025
18AQI
18AQI
9th April 2025
18AQI
18AQI
10th April 2025
22AQI
22AQI
11th April 2025
21AQI
21AQI
12th April 2025
20AQI
20AQI
13th April 2025
18AQI
18AQI
14th April 2025
21AQI
21AQI
15th April 2025
19AQI
19AQI
16th April 2025
18AQI
18AQI
17th April 2025
25AQI
25AQI
18th April 2025
31AQI
31AQI
19th April 2025
32AQI
32AQI
20th April 2025
29AQI
29AQI
21st April 2025
24AQI
24AQI
22nd April 2025
22AQI
22AQI
23rd April 2025
15AQI
15AQI
24th April 2025
16AQI
16AQI
25th April 2025
18AQI
18AQI
26th April 2025
21AQI
21AQI
27th April 2025
21AQI
21AQI
28th April 2025
20AQI
20AQI
29th April 2025
16AQI
16AQI
30th April 2025
20AQI
20AQI
1st May 2025
20AQI
20AQI
2nd May 2025
17AQI
17AQI
3rd May 2025
16AQI
16AQI
4th May 2025
20AQI
20AQI
5th May 2025
18AQI
18AQI
6th May 2025
17AQI
17AQI
7th May 2025
15AQI
15AQI
8th May 2025
17AQI
17AQI
9th May 2025
16AQI
16AQI
10th May 2025
14AQI
14AQI
11th May 2025
15AQI
15AQI
12th May 2025
16AQI
16AQI
13th May 2025
19AQI
19AQI
14th May 2025
21AQI
21AQI
15th May 2025
20AQI
20AQI
16th May 2025
21AQI
21AQI
17th May 2025
20AQI
20AQI
18th May 2025
22AQI
22AQI
19th May 2025
24AQI
24AQI
20th May 2025
37AQI
37AQI
21st May 2025
41AQI
41AQI
22nd May 2025
31AQI
31AQI
23rd May 2025
32AQI
32AQI
24th May 2025
24AQI
24AQI
25th May 2025
21AQI
21AQI
26th May 2025
21AQI
21AQI
27th May 2025
20AQI
20AQI
28th May 2025
18AQI
18AQI
29th May 2025
18AQI
18AQI
30th May 2025
17AQI
17AQI
31st May 2025
15AQI
15AQI
1st June 2025
15AQI
15AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
16AQI
16AQI
4th June 2025
18AQI
18AQI
5th June 2025
20AQI
20AQI
6th June 2025
20AQI
20AQI
7th June 2025
23AQI
23AQI
8th June 2025
26AQI
26AQI
9th June 2025
23AQI
23AQI
10th June 2025
22AQI
22AQI
11th June 2025
21AQI
21AQI
12th June 2025
23AQI
23AQI
13th June 2025
23AQI
23AQI
14th June 2025
20AQI
20AQI
15th June 2025
20AQI
20AQI
16th June 2025
20AQI
20AQI
17th June 2025
27AQI
27AQI
18th June 2025
25AQI
25AQI
19th June 2025
25AQI
25AQI
20th June 2025
23AQI
23AQI
21st June 2025
19AQI
19AQI
22nd June 2025
12AQI
12AQI
23rd June 2025
13AQI
13AQI
24th June 2025
14AQI
14AQI
25th June 2025
15AQI
15AQI
26th June 2025
16AQI
16AQI
27th June 2025
21AQI
21AQI
28th June 2025
18AQI
18AQI
29th June 2025
20AQI
20AQI
30th June 2025
39AQI
39AQI
1st July 2025
43AQI
43AQI
2nd July 2025
47AQI
47AQI
3rd July 2025
47AQI
47AQI
4th July 2025
49AQI
49AQI
5th July 2025
53AQI
53AQI
6th July 2025
60AQI
60AQI
7th July 2025
77AQI
77AQI
8th July 2025
80AQI
80AQI
9th July 2025
80AQI
80AQI
10th July 2025
64AQI
64AQI
11th July 2025
49AQI
49AQI
12th July 2025
54AQI
54AQI
13th July 2025
50AQI
50AQI
14th July 2025
41AQI
41AQI
15th July 2025
38AQI
38AQI
16th July 2025
43AQI
43AQI
17th July 2025
43AQI
43AQI
18th July 2025
37AQI
37AQI
19th July 2025
35AQI
35AQI
20th July 2025
35AQI
35AQI
21st July 2025
39AQI
39AQI
22nd July 2025
42AQI
42AQI
23rd July 2025
45AQI
45AQI
24th July 2025
47AQI
47AQI
25th July 2025
44AQI
44AQI
26th July 2025
43AQI
43AQI
27th July 2025
39AQI
39AQI
28th July 2025
46AQI
46AQI
29th July 2025
45AQI
45AQI
30th July 2025
35AQI
35AQI
31st July 2025
38AQI
38AQI
1st August 2025
34AQI
34AQI
2nd August 2025
42AQI
42AQI
3rd August 2025
46AQI
46AQI
4th August 2025
49AQI
49AQI
26AQI
29AQI
30AQI
20AQI
21AQI
21AQI
48AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202528AQI
31
28
29
2
30
31
30
24
7
4
207
9
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
April20AQI
202432AQI
31
29
28
3
21
9
27
4
29
1
25
6
27
4
29
1
31
30
31
338
28
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
December24AQI
202336AQI
30
1
26
2
30
1
23
7
28
3
25
5
21
10
29
2
27
3
31
25
4
30
1
325
39
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
August30AQI
202231AQI
31
20
1
26
5
20
10
30
1
29
1
19
4
1
25
31
29
1
31
291
24
Highest AQI recorded in
August63AQI
Lowest AQI recorded in
January20AQI
202120AQI
31
28
30
1
30
30
1
28
2
31
29
2
30
31
30
31
359
6
Highest AQI recorded in
June33AQI
Lowest AQI recorded in
January10AQI
202014AQI
13
21
18
30
31
31
19
31
30
31
255
Highest AQI recorded in
August24AQI
Lowest AQI recorded in
April9AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
36AQILeast Polluted Year Recorded
2020(Avg.)
14AQIKatakuramachi's annual 2025 AQI (28) shows an average percentage change of 19.01% (worsened AQI) compared to previous years: 2020 (14), 2021 (20), 2022 (31), 2023 (36), 2024 (32).
