Kitakokubunjidai, Ichihara, Chiba, 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+
October Air Quality Analysis
Kitakokubunjidai, Ichihara, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
23rd Oct 2022
69AQILowest AQI recorded on
4th Oct 2024
13AQISame Day Analysis (12th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 12th Oct - 13th Oct 2025
Kitakokubunjidai, Ichihara, Chiba, Japan
AQI
Day
Night
.
5 AM12th Oct 2025
5 PM
4 AM13th Oct 2025
Day time
Avg. Highest Time
4PM12th Oct
66AQI
Avg. Lowest Time
10AM12th Oct
44AQI
Night time
Avg. Highest Time
7PM12th Oct
73AQI
Avg. Lowest Time
9PM12th Oct
38AQI
In the last 24 hours,
Kitakokubunjidai's AQI reached its highest point of 73 at 7 PM during the Night, while the lowest point, 38, was recorded at 9 PM during the Night between 12th Oct and 13th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kitakokubunjidai, Ichihara, Chiba, Japan
SepOct
13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th
Day
Night
13th Sep 2025355 AMAQI
13th Sep 2025336 AMAQI
13th Sep 2025347 AMAQI
13th Sep 2025348 AMAQI
13th Sep 2025279 AMAQI
13th Sep 20252110 AMAQI
13th Sep 20252511 AMAQI
13th Sep 20253012 PMAQI
13th Sep 2025241 PMAQI
13th Sep 2025252 PMAQI
13th Sep 2025243 PMAQI
13th Sep 2025284 PMAQI
13th Sep 2025255 PMAQI
13th Sep 2025306 PMAQI
13th Sep 2025277 PMAQI
13th Sep 2025268 PMAQI
13th Sep 2025279 PMAQI
13th Sep 20252810 PMAQI
13th Sep 20253611 PMAQI
14th Sep 20253012 AMAQI
14th Sep 2025361 AMAQI
14th Sep 2025342 AMAQI
14th Sep 2025343 AMAQI
14th Sep 2025344 AMAQI
27°C24/29°C
14th Sep 2025345 AMAQI
14th Sep 2025326 AMAQI
14th Sep 2025347 AMAQI
14th Sep 2025358 AMAQI
14th Sep 2025289 AMAQI
14th Sep 20252410 AMAQI
14th Sep 20252811 AMAQI
14th Sep 20253212 PMAQI
14th Sep 2025321 PMAQI
14th Sep 2025342 PMAQI
14th Sep 2025453 PMAQI
14th Sep 2025444 PMAQI
14th Sep 2025465 PMAQI
14th Sep 2025516 PMAQI
14th Sep 2025487 PMAQI
14th Sep 2025428 PMAQI
14th Sep 2025409 PMAQI
14th Sep 20253610 PMAQI
14th Sep 20253811 PMAQI
15th Sep 20254012 AMAQI
15th Sep 2025361 AMAQI
15th Sep 2025342 AMAQI
15th Sep 2025353 AMAQI
15th Sep 2025344 AMAQI
28°C27/29°C
15th Sep 2025335 AMAQI
15th Sep 2025346 AMAQI
15th Sep 2025357 AMAQI
15th Sep 2025348 AMAQI
15th Sep 2025409 AMAQI
15th Sep 20254410 AMAQI
15th Sep 20255011 AMAQI
15th Sep 20254212 PMAQI
15th Sep 2025351 PMAQI
15th Sep 2025342 PMAQI
15th Sep 2025243 PMAQI
15th Sep 2025264 PMAQI
15th Sep 2025285 PMAQI
15th Sep 2025276 PMAQI
15th Sep 2025307 PMAQI
15th Sep 2025328 PMAQI
15th Sep 2025339 PMAQI
15th Sep 20253610 PMAQI
15th Sep 20253411 PMAQI
16th Sep 20253312 AMAQI
16th Sep 2025351 AMAQI
16th Sep 2025362 AMAQI
16th Sep 2025353 AMAQI
16th Sep 2025364 AMAQI
27°C25/30°C
16th Sep 2025375 AMAQI
16th Sep 2025376 AMAQI
16th Sep 2025367 AMAQI
16th Sep 2025368 AMAQI
16th Sep 2025309 AMAQI
16th Sep 20252810 AMAQI
16th Sep 20253011 AMAQI
16th Sep 20253212 PMAQI
16th Sep 2025331 PMAQI
16th Sep 2025302 PMAQI
16th Sep 2025283 PMAQI
16th Sep 2025274 PMAQI
16th Sep 2025255 PMAQI
16th Sep 2025206 PMAQI
16th Sep 2025247 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025319 PMAQI
16th Sep 20253110 PMAQI
16th Sep 20253011 PMAQI
17th Sep 20253212 AMAQI
17th Sep 2025341 AMAQI
17th Sep 2025342 AMAQI
17th Sep 2025343 AMAQI
17th Sep 2025344 AMAQI
27°C25/30°C
17th Sep 2025355 AMAQI
17th Sep 2025356 AMAQI
17th Sep 2025347 AMAQI
17th Sep 2025348 AMAQI
17th Sep 2025449 AMAQI
17th Sep 20254510 AMAQI
17th Sep 20254811 AMAQI
17th Sep 20255212 PMAQI
17th Sep 2025561 PMAQI
17th Sep 2025622 PMAQI
17th Sep 2025603 PMAQI
17th Sep 2025564 PMAQI
17th Sep 2025575 PMAQI
17th Sep 2025576 PMAQI
17th Sep 2025607 PMAQI
17th Sep 2025538 PMAQI
17th Sep 2025559 PMAQI
17th Sep 20255810 PMAQI
17th Sep 20255711 PMAQI
18th Sep 20254912 AMAQI
18th Sep 2025351 AMAQI
18th Sep 2025342 AMAQI
18th Sep 2025343 AMAQI
18th Sep 2025364 AMAQI
28°C26/31°C
18th Sep 2025405 AMAQI
18th Sep 2025406 AMAQI
18th Sep 2025397 AMAQI
18th Sep 2025408 AMAQI
18th Sep 2025629 AMAQI
18th Sep 20257110 AMAQI
18th Sep 20257311 AMAQI
18th Sep 20257412 PMAQI
18th Sep 2025661 PMAQI
18th Sep 2025692 PMAQI
18th Sep 2025663 PMAQI
18th Sep 2025674 PMAQI
18th Sep 2025605 PMAQI
18th Sep 2025466 PMAQI
18th Sep 2025427 PMAQI
18th Sep 2025378 PMAQI
18th Sep 2025359 PMAQI
18th Sep 20253610 PMAQI
18th Sep 20253511 PMAQI
19th Sep 20253812 AMAQI
19th Sep 2025461 AMAQI
19th Sep 2025462 AMAQI
19th Sep 2025483 AMAQI
19th Sep 2025504 AMAQI
28°C23/31°C
19th Sep 2025545 AMAQI
19th Sep 2025546 AMAQI
19th Sep 2025547 AMAQI
19th Sep 2025548 AMAQI
19th Sep 2025319 AMAQI
19th Sep 20252410 AMAQI
19th Sep 20252311 AMAQI
19th Sep 20252612 PMAQI
19th Sep 2025261 PMAQI
19th Sep 2025272 PMAQI
19th Sep 2025253 PMAQI
19th Sep 2025274 PMAQI
19th Sep 2025275 PMAQI
19th Sep 2025266 PMAQI
19th Sep 2025307 PMAQI
19th Sep 2025308 PMAQI
19th Sep 2025359 PMAQI
19th Sep 20253410 PMAQI
19th Sep 20253411 PMAQI
20th Sep 20253512 AMAQI
20th Sep 2025421 AMAQI
20th Sep 2025442 AMAQI
20th Sep 2025433 AMAQI
20th Sep 2025424 AMAQI
22°C20/23°C
20th Sep 2025405 AMAQI
20th Sep 2025406 AMAQI
20th Sep 2025407 AMAQI
20th Sep 2025408 AMAQI
20th Sep 2025289 AMAQI
20th Sep 20252510 AMAQI
20th Sep 20252711 AMAQI
20th Sep 20252412 PMAQI
20th Sep 2025261 PMAQI
20th Sep 2025242 PMAQI
20th Sep 2025253 PMAQI
20th Sep 2025264 PMAQI
20th Sep 2025245 PMAQI
20th Sep 2025266 PMAQI
20th Sep 2025317 PMAQI
20th Sep 2025318 PMAQI
20th Sep 2025339 PMAQI
20th Sep 20253210 PMAQI
20th Sep 20253311 PMAQI
21st Sep 20253512 AMAQI
21st Sep 2025381 AMAQI
21st Sep 2025382 AMAQI
21st Sep 2025393 AMAQI
21st Sep 2025374 AMAQI
25°C22/27°C
21st Sep 2025355 AMAQI
21st Sep 2025346 AMAQI
21st Sep 2025347 AMAQI
21st Sep 2025358 AMAQI
21st Sep 2025249 AMAQI
21st Sep 20251810 AMAQI
21st Sep 20252011 AMAQI
21st Sep 20252312 PMAQI
21st Sep 2025251 PMAQI
21st Sep 2025252 PMAQI
21st Sep 2025263 PMAQI
21st Sep 2025284 PMAQI
21st Sep 2025265 PMAQI
21st Sep 2025196 PMAQI
21st Sep 2025217 PMAQI
21st Sep 2025258 PMAQI
21st Sep 2025309 PMAQI
21st Sep 20253110 PMAQI
21st Sep 20253111 PMAQI
22nd Sep 20253112 AMAQI
22nd Sep 2025341 AMAQI
22nd Sep 2025362 AMAQI
22nd Sep 2025363 AMAQI
22nd Sep 2025354 AMAQI
26°C22/30°C
22nd Sep 2025345 AMAQI
22nd Sep 2025346 AMAQI
22nd Sep 2025347 AMAQI
22nd Sep 2025338 AMAQI
22nd Sep 2025219 AMAQI
22nd Sep 20251810 AMAQI
22nd Sep 20251911 AMAQI
22nd Sep 20251812 PMAQI
22nd Sep 2025221 PMAQI
22nd Sep 2025222 PMAQI
22nd Sep 2025223 PMAQI
22nd Sep 2025234 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025216 PMAQI
22nd Sep 2025227 PMAQI
22nd Sep 2025268 PMAQI
22nd Sep 2025289 PMAQI
22nd Sep 20252910 PMAQI
22nd Sep 20252911 PMAQI
23rd Sep 20253112 AMAQI
23rd Sep 2025321 AMAQI
23rd Sep 2025332 AMAQI
23rd Sep 2025333 AMAQI
23rd Sep 2025324 AMAQI
23°C21/25°C
23rd Sep 2025305 AMAQI
23rd Sep 2025306 AMAQI
23rd Sep 2025307 AMAQI
23rd Sep 2025318 AMAQI
23rd Sep 2025229 AMAQI
23rd Sep 20252210 AMAQI
23rd Sep 20252611 AMAQI
23rd Sep 20252612 PMAQI
23rd Sep 2025261 PMAQI
23rd Sep 2025252 PMAQI
23rd Sep 2025243 PMAQI
23rd Sep 2025244 PMAQI
23rd Sep 2025225 PMAQI
23rd Sep 2025246 PMAQI
23rd Sep 2025217 PMAQI
23rd Sep 2025258 PMAQI
23rd Sep 2025289 PMAQI
23rd Sep 20252810 PMAQI
23rd Sep 20252811 PMAQI
24th Sep 20252812 AMAQI
24th Sep 2025301 AMAQI
24th Sep 2025302 AMAQI
24th Sep 2025313 AMAQI
24th Sep 2025314 AMAQI
23°C20/26°C
24th Sep 2025295 AMAQI
24th Sep 2025296 AMAQI
24th Sep 2025297 AMAQI
24th Sep 2025288 AMAQI
24th Sep 2025209 AMAQI
24th Sep 20252110 AMAQI
24th Sep 20252011 AMAQI
24th Sep 20252312 PMAQI
24th Sep 2025281 PMAQI
24th Sep 2025282 PMAQI
24th Sep 2025263 PMAQI
24th Sep 2025264 PMAQI
24th Sep 2025245 PMAQI
24th Sep 2025216 PMAQI
24th Sep 2025247 PMAQI
24th Sep 2025258 PMAQI
24th Sep 2025289 PMAQI
24th Sep 20252710 PMAQI
24th Sep 20252711 PMAQI
25th Sep 20252612 AMAQI
25th Sep 2025281 AMAQI
25th Sep 2025302 AMAQI
25th Sep 2025283 AMAQI
25th Sep 2025294 AMAQI
23°C20/26°C
25th Sep 2025285 AMAQI
25th Sep 2025286 AMAQI
25th Sep 2025287 AMAQI
25th Sep 2025288 AMAQI
25th Sep 2025309 AMAQI
25th Sep 20252510 AMAQI
25th Sep 20252611 AMAQI
25th Sep 20253012 PMAQI
25th Sep 2025281 PMAQI
25th Sep 2025332 PMAQI
25th Sep 2025353 PMAQI
25th Sep 2025354 PMAQI
25th Sep 2025345 PMAQI
25th Sep 2025326 PMAQI
25th Sep 2025317 PMAQI
25th Sep 2025298 PMAQI
25th Sep 2025289 PMAQI
25th Sep 20252910 PMAQI
25th Sep 20252511 PMAQI
26th Sep 20252312 AMAQI
26th Sep 2025231 AMAQI
26th Sep 2025222 AMAQI
26th Sep 2025223 AMAQI
26th Sep 2025204 AMAQI
24°C21/27°C
26th Sep 2025185 AMAQI
26th Sep 2025176 AMAQI
26th Sep 2025207 AMAQI
26th Sep 2025378 AMAQI
26th Sep 2025539 AMAQI
26th Sep 20255510 AMAQI
26th Sep 20255211 AMAQI
26th Sep 20254512 PMAQI
26th Sep 2025501 PMAQI
26th Sep 2025682 PMAQI
26th Sep 2025773 PMAQI
26th Sep 2025774 PMAQI
26th Sep 2025725 PMAQI
26th Sep 2025646 PMAQI
26th Sep 2025687 PMAQI
26th Sep 2025728 PMAQI
26th Sep 2025689 PMAQI
26th Sep 20256010 PMAQI
26th Sep 20255211 PMAQI
27th Sep 20255012 AMAQI
27th Sep 2025451 AMAQI
27th Sep 2025412 AMAQI
27th Sep 2025303 AMAQI
27th Sep 2025244 AMAQI
26°C23/30°C
27th Sep 2025265 AMAQI
27th Sep 2025226 AMAQI
27th Sep 2025247 AMAQI
27th Sep 2025268 AMAQI
27th Sep 2025299 AMAQI
27th Sep 20253010 AMAQI
27th Sep 20253311 AMAQI
27th Sep 20253512 PMAQI
27th Sep 2025321 PMAQI
27th Sep 2025192 PMAQI
27th Sep 2025203 PMAQI
27th Sep 2025184 PMAQI
27th Sep 2025195 PMAQI
27th Sep 2025276 PMAQI
27th Sep 2025307 PMAQI
27th Sep 2025338 PMAQI
27th Sep 2025319 PMAQI
27th Sep 20253010 PMAQI
27th Sep 20253111 PMAQI
28th Sep 20252612 AMAQI
28th Sep 2025221 AMAQI
28th Sep 2025222 AMAQI
28th Sep 2025183 AMAQI
28th Sep 2025264 AMAQI
24°C22/27°C
28th Sep 2025275 AMAQI
28th Sep 2025316 AMAQI
28th Sep 2025317 AMAQI
28th Sep 2025288 AMAQI
28th Sep 2025339 AMAQI
28th Sep 20253310 AMAQI
28th Sep 20252411 AMAQI
28th Sep 20252812 PMAQI
28th Sep 2025211 PMAQI
28th Sep 2025242 PMAQI
28th Sep 2025263 PMAQI
28th Sep 2025224 PMAQI
28th Sep 2025285 PMAQI
28th Sep 2025296 PMAQI
28th Sep 2025227 PMAQI
28th Sep 2025248 PMAQI
28th Sep 2025269 PMAQI
28th Sep 20252110 PMAQI
28th Sep 20251811 PMAQI
29th Sep 20251812 AMAQI
29th Sep 2025171 AMAQI
29th Sep 2025172 AMAQI
29th Sep 2025173 AMAQI
29th Sep 2025224 AMAQI
25°C23/27°C
29th Sep 2025295 AMAQI
29th Sep 2025276 AMAQI
29th Sep 2025227 AMAQI
29th Sep 2025298 AMAQI
29th Sep 2025299 AMAQI
29th Sep 20253710 AMAQI
29th Sep 20253511 AMAQI
29th Sep 20253912 PMAQI
29th Sep 2025391 PMAQI
29th Sep 2025292 PMAQI
29th Sep 2025233 PMAQI
29th Sep 2025244 PMAQI
29th Sep 2025305 PMAQI
29th Sep 2025316 PMAQI
29th Sep 2025287 PMAQI
29th Sep 2025418 PMAQI
29th Sep 2025409 PMAQI
29th Sep 20252810 PMAQI
29th Sep 20251411 PMAQI
30th Sep 20251712 AMAQI
30th Sep 2025201 AMAQI
30th Sep 2025162 AMAQI
30th Sep 2025123 AMAQI
30th Sep 2025144 AMAQI
26°C23/29°C
30th Sep 2025165 AMAQI
30th Sep 2025196 AMAQI
30th Sep 2025267 AMAQI
30th Sep 2025258 AMAQI
30th Sep 2025219 AMAQI
30th Sep 20252310 AMAQI
30th Sep 20253011 AMAQI
30th Sep 20252812 PMAQI
30th Sep 2025291 PMAQI
30th Sep 2025262 PMAQI
30th Sep 2025293 PMAQI
30th Sep 2025354 PMAQI
30th Sep 2025315 PMAQI
30th Sep 2025276 PMAQI
30th Sep 2025347 PMAQI
30th Sep 2025348 PMAQI
30th Sep 2025399 PMAQI
30th Sep 20254710 PMAQI
30th Sep 20254211 PMAQI
1st Oct 20254012 AMAQI
1st Oct 2025361 AMAQI
1st Oct 2025272 AMAQI
1st Oct 2025213 AMAQI
1st Oct 2025274 AMAQI
24°C22/27°C
1st Oct 2025275 AMAQI
1st Oct 2025256 AMAQI
1st Oct 2025287 AMAQI
1st Oct 2025298 AMAQI
1st Oct 2025289 AMAQI
1st Oct 20252810 AMAQI
1st Oct 20252911 AMAQI
1st Oct 20252912 PMAQI
1st Oct 2025421 PMAQI
1st Oct 2025402 PMAQI
1st Oct 2025483 PMAQI
1st Oct 2025544 PMAQI
1st Oct 2025545 PMAQI
1st Oct 2025466 PMAQI
1st Oct 2025467 PMAQI
1st Oct 2025308 PMAQI
1st Oct 2025269 PMAQI
1st Oct 20253810 PMAQI
1st Oct 20253411 PMAQI
2nd Oct 20253712 AMAQI
2nd Oct 2025351 AMAQI
2nd Oct 2025332 AMAQI
2nd Oct 2025363 AMAQI
2nd Oct 2025444 AMAQI
21°C19/21°C
2nd Oct 2025455 AMAQI
2nd Oct 2025456 AMAQI
2nd Oct 2025407 AMAQI
2nd Oct 2025448 AMAQI
2nd Oct 2025519 AMAQI
2nd Oct 20255510 AMAQI
2nd Oct 20255611 AMAQI
2nd Oct 20255912 PMAQI
2nd Oct 2025631 PMAQI
2nd Oct 2025622 PMAQI
2nd Oct 2025573 PMAQI
2nd Oct 2025504 PMAQI
2nd Oct 2025475 PMAQI
2nd Oct 2025436 PMAQI
2nd Oct 2025367 PMAQI
2nd Oct 2025448 PMAQI
2nd Oct 2025429 PMAQI
2nd Oct 20253810 PMAQI
2nd Oct 20254111 PMAQI
3rd Oct 20254012 AMAQI
3rd Oct 2025471 AMAQI
3rd Oct 2025452 AMAQI
3rd Oct 2025553 AMAQI
3rd Oct 2025564 AMAQI
22°C19/26°C
3rd Oct 2025565 AMAQI
3rd Oct 2025496 AMAQI
3rd Oct 2025457 AMAQI
3rd Oct 2025438 AMAQI
3rd Oct 2025399 AMAQI
3rd Oct 20253410 AMAQI
3rd Oct 20253411 AMAQI
3rd Oct 20253512 PMAQI
3rd Oct 2025361 PMAQI
3rd Oct 2025372 PMAQI
3rd Oct 2025343 PMAQI
3rd Oct 2025304 PMAQI
3rd Oct 2025305 PMAQI
3rd Oct 2025326 PMAQI
3rd Oct 2025347 PMAQI
3rd Oct 2025428 PMAQI
3rd Oct 2025289 PMAQI
3rd Oct 20254310 PMAQI
3rd Oct 20253711 PMAQI
4th Oct 20254212 AMAQI
4th Oct 2025691 AMAQI
4th Oct 2025692 AMAQI
4th Oct 2025693 AMAQI
4th Oct 2025454 AMAQI
23°C21/26°C
4th Oct 2025605 AMAQI
4th Oct 2025596 AMAQI
4th Oct 2025597 AMAQI
4th Oct 2025618 AMAQI
4th Oct 2025649 AMAQI
4th Oct 20256510 AMAQI
4th Oct 20255811 AMAQI
4th Oct 20256012 PMAQI
4th Oct 2025581 PMAQI
4th Oct 2025572 PMAQI
4th Oct 2025343 PMAQI
4th Oct 2025204 PMAQI
4th Oct 2025265 PMAQI
4th Oct 2025526 PMAQI
4th Oct 2025467 PMAQI
4th Oct 2025468 PMAQI
4th Oct 2025499 PMAQI
4th Oct 20255310 PMAQI
4th Oct 20256011 PMAQI
5th Oct 20256212 AMAQI
5th Oct 2025621 AMAQI
5th Oct 2025592 AMAQI
5th Oct 2025603 AMAQI
5th Oct 2025604 AMAQI
23°C22/26°C
5th Oct 2025585 AMAQI
5th Oct 2025556 AMAQI
5th Oct 2025567 AMAQI
5th Oct 2025558 AMAQI
5th Oct 2025609 AMAQI
5th Oct 20256010 AMAQI
5th Oct 20256011 AMAQI
5th Oct 20254212 PMAQI
5th Oct 2025381 PMAQI
5th Oct 2025562 PMAQI
5th Oct 2025563 PMAQI
5th Oct 2025564 PMAQI
5th Oct 2025565 PMAQI
5th Oct 2025436 PMAQI
5th Oct 2025787 PMAQI
5th Oct 2025918 PMAQI
5th Oct 2025519 PMAQI
5th Oct 20254110 PMAQI
5th Oct 20254211 PMAQI
6th Oct 20254012 AMAQI
6th Oct 2025481 AMAQI
6th Oct 2025482 AMAQI
6th Oct 2025433 AMAQI
6th Oct 2025394 AMAQI
24°C21/27°C
6th Oct 2025405 AMAQI
6th Oct 2025376 AMAQI
6th Oct 2025267 AMAQI
6th Oct 2025198 AMAQI
6th Oct 2025509 AMAQI
6th Oct 20255710 AMAQI
6th Oct 20256011 AMAQI
6th Oct 20257112 PMAQI
6th Oct 2025671 PMAQI
6th Oct 2025642 PMAQI
6th Oct 2025643 PMAQI
6th Oct 2025664 PMAQI
6th Oct 2025565 PMAQI
6th Oct 2025296 PMAQI
6th Oct 2025577 PMAQI
6th Oct 2025568 PMAQI
6th Oct 2025559 PMAQI
6th Oct 20255410 PMAQI
6th Oct 20255511 PMAQI
7th Oct 20256012 AMAQI
7th Oct 2025601 AMAQI
7th Oct 2025612 AMAQI
24°C21/27°C
7th Oct 2025568 PMAQI
7th Oct 2025269 PMAQI
7th Oct 20255110 PMAQI
7th Oct 20255611 PMAQI
8th Oct 20255512 AMAQI
8th Oct 2025561 AMAQI
8th Oct 2025562 AMAQI
8th Oct 2025603 AMAQI
8th Oct 2025614 AMAQI
22°C21/24°C
8th Oct 2025625 AMAQI
8th Oct 2025336 AMAQI
8th Oct 2025347 AMAQI
8th Oct 2025538 AMAQI
8th Oct 2025589 AMAQI
8th Oct 20255810 AMAQI
8th Oct 20255811 AMAQI
8th Oct 20255812 PMAQI
8th Oct 2025661 PMAQI
8th Oct 2025672 PMAQI
8th Oct 2025663 PMAQI
8th Oct 2025694 PMAQI
8th Oct 2025665 PMAQI
8th Oct 2025646 PMAQI
8th Oct 2025637 PMAQI
8th Oct 2025648 PMAQI
8th Oct 2025639 PMAQI
8th Oct 20256610 PMAQI
8th Oct 20254311 PMAQI
9th Oct 20254612 AMAQI
9th Oct 2025651 AMAQI
9th Oct 2025582 AMAQI
9th Oct 2025523 AMAQI
9th Oct 2025554 AMAQI
23°C21/26°C
9th Oct 2025575 AMAQI
9th Oct 2025606 AMAQI
9th Oct 2025427 AMAQI
9th Oct 2025618 AMAQI
9th Oct 2025499 AMAQI
9th Oct 20255310 AMAQI
9th Oct 20255411 AMAQI
9th Oct 20255612 PMAQI
9th Oct 2025541 PMAQI
9th Oct 2025542 PMAQI
9th Oct 2025643 PMAQI
9th Oct 2025574 PMAQI
9th Oct 2025555 PMAQI
9th Oct 2025626 PMAQI
9th Oct 2025637 PMAQI
9th Oct 2025618 PMAQI
9th Oct 2025409 PMAQI
9th Oct 20255110 PMAQI
9th Oct 20255511 PMAQI
10th Oct 20255712 AMAQI
10th Oct 2025411 AMAQI
10th Oct 2025592 AMAQI
10th Oct 2025613 AMAQI
10th Oct 2025624 AMAQI
21°C19/22°C
10th Oct 2025595 AMAQI
10th Oct 2025586 AMAQI
10th Oct 2025597 AMAQI
10th Oct 2025598 AMAQI
10th Oct 2025449 AMAQI
10th Oct 20254310 AMAQI
10th Oct 20255711 AMAQI
10th Oct 20255612 PMAQI
10th Oct 2025571 PMAQI
10th Oct 2025622 PMAQI
10th Oct 2025583 PMAQI
10th Oct 2025574 PMAQI
10th Oct 2025595 PMAQI
10th Oct 2025466 PMAQI
10th Oct 2025547 PMAQI
10th Oct 2025638 PMAQI
10th Oct 2025629 PMAQI
10th Oct 20256310 PMAQI
10th Oct 20256611 PMAQI
11th Oct 20256612 AMAQI
11th Oct 2025671 AMAQI
11th Oct 2025692 AMAQI
11th Oct 2025513 AMAQI
11th Oct 2025564 AMAQI
20°C18/22°C
11th Oct 2025695 AMAQI
11th Oct 2025576 AMAQI
11th Oct 2025537 AMAQI
11th Oct 2025558 AMAQI
11th Oct 2025549 AMAQI
11th Oct 20255110 AMAQI
11th Oct 20255911 AMAQI
11th Oct 20255712 PMAQI
11th Oct 2025551 PMAQI
11th Oct 2025522 PMAQI
11th Oct 2025533 PMAQI
11th Oct 2025434 PMAQI
11th Oct 2025425 PMAQI
11th Oct 2025406 PMAQI
11th Oct 2025227 PMAQI
11th Oct 2025278 PMAQI
11th Oct 2025389 PMAQI
11th Oct 20253710 PMAQI
11th Oct 20253911 PMAQI
12th Oct 20252812 AMAQI
12th Oct 2025371 AMAQI
12th Oct 2025442 AMAQI
12th Oct 2025513 AMAQI
12th Oct 2025514 AMAQI
19°C18/20°C
12th Oct 2025445 AMAQI
12th Oct 2025496 AMAQI
12th Oct 2025477 AMAQI
12th Oct 2025488 AMAQI
12th Oct 2025469 AMAQI
12th Oct 20254410 AMAQI
12th Oct 20254911 AMAQI
12th Oct 20255012 PMAQI
12th Oct 2025491 PMAQI
12th Oct 2025512 PMAQI
12th Oct 2025643 PMAQI
12th Oct 2025664 PMAQI
12th Oct 2025665 PMAQI
12th Oct 2025716 PMAQI
12th Oct 2025737 PMAQI
12th Oct 2025708 PMAQI
12th Oct 2025389 PMAQI
12th Oct 20253910 PMAQI
12th Oct 20256211 PMAQI
13th Oct 20256612 AMAQI
13th Oct 2025651 AMAQI
13th Oct 2025632 AMAQI
13th Oct 2025623 AMAQI
13th Oct 2025684 AMAQI
21°C17/23°C
13th Oct 2025685 AMAQI
5 AM13th Oct 2025656 AMAQI
13th Oct 2025657 AMAQI
13th Oct 2025698 AMAQI
13th Oct 2025619 AMAQI
13th Oct 20255910 AMAQI
13th Oct 20255811 AMAQI
11 AM13th Oct 20255112 PMAQI
13th Oct 2025381 PMAQI
13th Oct 2025372 PMAQI
13th Oct 2025483 PMAQI
5 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 5 PM
41AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
6 AM - 7 AM
39AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 5 PM (Avg. 41), while the lowest AQI was between 6 AM to 7 AM (Avg. 39).
Night time
Avg. Highest Time
8 PM
42AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
6 PM
38AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 8 PM (Avg. 42), while the lowest AQI was between 6 PM to 6 PM (Avg. 38).
2025 Days Vs Air Quality
Kitakokubunjidai, Ichihara, Chiba, Japan
2025
88%
250
12%
35
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Good
250 DaysModerate
35 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 286 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
Kitakokubunjidai, Ichihara, Chiba, 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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
30AQI
30AQI
2nd January 2025
34AQI
34AQI
3rd January 2025
24AQI
24AQI
4th January 2025
29AQI
29AQI
5th January 2025
33AQI
33AQI
6th January 2025
54AQI
54AQI
7th January 2025
30AQI
30AQI
8th January 2025
37AQI
37AQI
9th January 2025
29AQI
29AQI
10th January 2025
30AQI
30AQI
11th January 2025
27AQI
27AQI
12th January 2025
35AQI
35AQI
13th January 2025
27AQI
27AQI
14th January 2025
38AQI
38AQI
15th January 2025
36AQI
36AQI
16th January 2025
32AQI
32AQI
17th January 2025
29AQI
29AQI
18th January 2025
32AQI
32AQI
19th January 2025
57AQI
57AQI
20th January 2025
41AQI
41AQI
21st January 2025
43AQI
43AQI
22nd January 2025
39AQI
39AQI
23rd January 2025
56AQI
56AQI
24th January 2025
46AQI
46AQI
25th January 2025
41AQI
41AQI
26th January 2025
39AQI
39AQI
27th January 2025
34AQI
34AQI
28th January 2025
39AQI
39AQI
29th January 2025
31AQI
31AQI
30th January 2025
32AQI
32AQI
31st January 2025
29AQI
29AQI
1st February 2025
38AQI
38AQI
2nd February 2025
30AQI
30AQI
3rd February 2025
44AQI
44AQI
4th February 2025
30AQI
30AQI
5th February 2025
35AQI
35AQI
6th February 2025
30AQI
30AQI
7th February 2025
29AQI
29AQI
8th February 2025
30AQI
30AQI
9th February 2025
30AQI
30AQI
10th February 2025
31AQI
31AQI
11th February 2025
31AQI
31AQI
12th February 2025
34AQI
34AQI
13th February 2025
31AQI
31AQI
14th February 2025
29AQI
29AQI
15th February 2025
30AQI
30AQI
16th February 2025
37AQI
37AQI
17th February 2025
35AQI
35AQI
18th February 2025
31AQI
31AQI
19th February 2025
31AQI
31AQI
20th February 2025
30AQI
30AQI
21st February 2025
30AQI
30AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
32AQI
32AQI
24th February 2025
34AQI
34AQI
25th February 2025
35AQI
35AQI
26th February 2025
35AQI
35AQI
27th February 2025
38AQI
38AQI
28th February 2025
58AQI
58AQI
1st March 2025
49AQI
49AQI
2nd March 2025
66AQI
66AQI
3rd March 2025
41AQI
41AQI
4th March 2025
40AQI
40AQI
5th March 2025
26AQI
26AQI
6th March 2025
33AQI
33AQI
7th March 2025
30AQI
30AQI
8th March 2025
33AQI
33AQI
9th March 2025
32AQI
32AQI
10th March 2025
34AQI
34AQI
11th March 2025
39AQI
39AQI
12th March 2025
44AQI
44AQI
13th March 2025
40AQI
40AQI
14th March 2025
40AQI
40AQI
15th March 2025
31AQI
31AQI
16th March 2025
26AQI
26AQI
17th March 2025
22AQI
22AQI
18th March 2025
23AQI
23AQI
19th March 2025
18AQI
18AQI
20th March 2025
21AQI
21AQI
21st March 2025
41AQI
41AQI
22nd March 2025
46AQI
46AQI
23rd March 2025
56AQI
56AQI
24th March 2025
52AQI
52AQI
25th March 2025
65AQI
65AQI
26th March 2025
81AQI
81AQI
27th March 2025
67AQI
67AQI
28th March 2025
49AQI
49AQI
29th March 2025
37AQI
37AQI
30th March 2025
43AQI
43AQI
31st March 2025
31AQI
31AQI
1st April 2025
29AQI
29AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
20AQI
20AQI
4th April 2025
21AQI
21AQI
5th April 2025
21AQI
21AQI
6th April 2025
21AQI
21AQI
7th April 2025
29AQI
29AQI
8th April 2025
33AQI
33AQI
9th April 2025
25AQI
25AQI
10th April 2025
43AQI
43AQI
11th April 2025
37AQI
37AQI
12th April 2025
36AQI
36AQI
13th April 2025
26AQI
26AQI
14th April 2025
39AQI
39AQI
15th April 2025
28AQI
28AQI
16th April 2025
33AQI
33AQI
17th April 2025
44AQI
44AQI
18th April 2025
49AQI
49AQI
19th April 2025
61AQI
61AQI
20th April 2025
43AQI
43AQI
21st April 2025
42AQI
42AQI
22nd April 2025
38AQI
38AQI
23rd April 2025
27AQI
27AQI
24th April 2025
33AQI
33AQI
25th April 2025
34AQI
34AQI
26th April 2025
41AQI
41AQI
27th April 2025
43AQI
43AQI
28th April 2025
36AQI
36AQI
29th April 2025
37AQI
37AQI
30th April 2025
43AQI
43AQI
1st May 2025
38AQI
38AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
31AQI
31AQI
4th May 2025
36AQI
36AQI
5th May 2025
31AQI
31AQI
6th May 2025
25AQI
25AQI
7th May 2025
25AQI
25AQI
8th May 2025
24AQI
24AQI
9th May 2025
26AQI
26AQI
10th May 2025
19AQI
19AQI
11th May 2025
28AQI
28AQI
12th May 2025
27AQI
27AQI
13th May 2025
33AQI
33AQI
14th May 2025
27AQI
27AQI
15th May 2025
35AQI
35AQI
16th May 2025
37AQI
37AQI
17th May 2025
23AQI
23AQI
18th May 2025
40AQI
40AQI
19th May 2025
40AQI
40AQI
20th May 2025
58AQI
58AQI
21st May 2025
37AQI
37AQI
22nd May 2025
39AQI
39AQI
23rd May 2025
38AQI
38AQI
24th May 2025
36AQI
36AQI
25th May 2025
29AQI
29AQI
26th May 2025
26AQI
26AQI
27th May 2025
26AQI
26AQI
28th May 2025
24AQI
24AQI
29th May 2025
24AQI
24AQI
30th May 2025
22AQI
22AQI
31st May 2025
16AQI
16AQI
1st June 2025
18AQI
18AQI
2nd June 2025
25AQI
25AQI
3rd June 2025
27AQI
27AQI
4th June 2025
32AQI
32AQI
5th June 2025
37AQI
37AQI
6th June 2025
42AQI
42AQI
7th June 2025
45AQI
45AQI
8th June 2025
51AQI
51AQI
9th June 2025
36AQI
36AQI
10th June 2025
25AQI
25AQI
11th June 2025
24AQI
24AQI
12th June 2025
31AQI
31AQI
13th June 2025
31AQI
31AQI
14th June 2025
30AQI
30AQI
15th June 2025
29AQI
29AQI
16th June 2025
35AQI
35AQI
17th June 2025
46AQI
46AQI
18th June 2025
42AQI
42AQI
19th June 2025
39AQI
39AQI
20th June 2025
34AQI
34AQI
21st June 2025
30AQI
30AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
23AQI
23AQI
24th June 2025
21AQI
21AQI
25th June 2025
20AQI
20AQI
26th June 2025
20AQI
20AQI
27th June 2025
30AQI
30AQI
28th June 2025
28AQI
28AQI
29th June 2025
30AQI
30AQI
30th June 2025
34AQI
34AQI
1st July 2025
33AQI
33AQI
2nd July 2025
39AQI
39AQI
3rd July 2025
41AQI
41AQI
4th July 2025
40AQI
40AQI
5th July 2025
47AQI
47AQI
6th July 2025
64AQI
64AQI
7th July 2025
72AQI
72AQI
8th July 2025
73AQI
73AQI
9th July 2025
73AQI
73AQI
10th July 2025
58AQI
58AQI
11th July 2025
52AQI
52AQI
12th July 2025
55AQI
55AQI
13th July 2025
49AQI
49AQI
14th July 2025
45AQI
45AQI
15th July 2025
42AQI
42AQI
16th July 2025
41AQI
41AQI
17th July 2025
42AQI
42AQI
18th July 2025
39AQI
39AQI
19th July 2025
36AQI
36AQI
20th July 2025
34AQI
34AQI
21st July 2025
33AQI
33AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
30AQI
30AQI
24th July 2025
31AQI
31AQI
25th July 2025
27AQI
27AQI
26th July 2025
27AQI
27AQI
27th July 2025
25AQI
25AQI
28th July 2025
29AQI
29AQI
29th July 2025
26AQI
26AQI
30th July 2025
28AQI
28AQI
31st July 2025
29AQI
29AQI
1st August 2025
31AQI
31AQI
2nd August 2025
39AQI
39AQI
3rd August 2025
43AQI
43AQI
4th August 2025
58AQI
58AQI
5th August 2025
51AQI
51AQI
6th August 2025
51AQI
51AQI
7th August 2025
47AQI
47AQI
8th August 2025
47AQI
47AQI
9th August 2025
48AQI
48AQI
10th August 2025
42AQI
42AQI
11th August 2025
39AQI
39AQI
12th August 2025
35AQI
35AQI
13th August 2025
32AQI
32AQI
14th August 2025
37AQI
37AQI
15th August 2025
35AQI
35AQI
16th August 2025
37AQI
37AQI
17th August 2025
40AQI
40AQI
18th August 2025
42AQI
42AQI
19th August 2025
46AQI
46AQI
20th August 2025
48AQI
48AQI
21st August 2025
50AQI
50AQI
22nd August 2025
51AQI
51AQI
23rd August 2025
48AQI
48AQI
24th August 2025
56AQI
56AQI
25th August 2025
55AQI
55AQI
26th August 2025
54AQI
54AQI
27th August 2025
51AQI
51AQI
28th August 2025
46AQI
46AQI
29th August 2025
50AQI
50AQI
30th August 2025
55AQI
55AQI
31st August 2025
50AQI
50AQI
1st September 2025
45AQI
45AQI
2nd September 2025
38AQI
38AQI
3rd September 2025
37AQI
37AQI
4th September 2025
35AQI
35AQI
5th September 2025
33AQI
33AQI
6th September 2025
29AQI
29AQI
7th September 2025
29AQI
29AQI
8th September 2025
37AQI
37AQI
9th September 2025
41AQI
41AQI
10th September 2025
36AQI
36AQI
11th September 2025
31AQI
31AQI
12th September 2025
31AQI
31AQI
13th September 2025
29AQI
29AQI
14th September 2025
35AQI
35AQI
15th September 2025
35AQI
35AQI
16th September 2025
31AQI
31AQI
17th September 2025
47AQI
47AQI
18th September 2025
49AQI
49AQI
19th September 2025
36AQI
36AQI
20th September 2025
33AQI
33AQI
21st September 2025
30AQI
30AQI
22nd September 2025
28AQI
28AQI
23rd September 2025
28AQI
28AQI
24th September 2025
27AQI
27AQI
25th September 2025
29AQI
29AQI
26th September 2025
43AQI
43AQI
27th September 2025
33AQI
33AQI
28th September 2025
26AQI
26AQI
29th September 2025
26AQI
26AQI
30th September 2025
25AQI
25AQI
1st October 2025
36AQI
36AQI
2nd October 2025
43AQI
43AQI
3rd October 2025
41AQI
41AQI
4th October 2025
51AQI
51AQI
5th October 2025
58AQI
58AQI
6th October 2025
44AQI
44AQI
7th October 2025
50AQI
50AQI
8th October 2025
58AQI
58AQI
9th October 2025
51AQI
51AQI
10th October 2025
57AQI
57AQI
11th October 2025
52AQI
52AQI
12th October 2025
45AQI
45AQI
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
36AQI
34AQI
41AQI
35AQI
31AQI
31AQI
42AQI
46AQI
34AQI
49AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202537AQI
28
3
27
1
25
6
29
1
30
1
29
1
24
7
22
9
30
6
6
250
35
Highest AQI recorded in
October49AQI
Lowest AQI recorded in
May31AQI
202434AQI
30
1
26
3
27
4
25
5
27
4
28
2
20
11
30
1
29
1
30
1
27
3
29
2
328
38
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
August24AQI
202334AQI
27
4
25
3
29
2
25
5
29
2
28
2
29
2
31
29
1
30
1
23
6
23
8
328
36
Highest AQI recorded in
April41AQI
Lowest AQI recorded in
August20AQI
202233AQI
28
2
19
2
28
3
25
4
29
2
28
2
20
1
1
28
28
3
28
2
30
1
292
22
Highest AQI recorded in
March38AQI
Lowest AQI recorded in
August21AQI
202133AQI
17
13
19
9
25
4
29
1
26
5
27
3
26
3
1
1
29
2
30
30
1
26
4
24
7
308
52
1
1
Highest AQI recorded in
January47AQI
Lowest AQI recorded in
August24AQI
202048AQI
11
2
14
7
15
3
16
14
11
20
15
15
1
10
6
19
12
16
14
17
14
144
107
1
Highest AQI recorded in
July55AQI
Lowest AQI recorded in
March41AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
48AQILeast Polluted Year Recorded
2022(Avg.)
33AQIKitakokubunjidai's annual 2025 AQI (37) shows an average percentage change of 3.3% (worsened AQI) compared to previous years: 2020 (48), 2021 (33), 2022 (33), 2023 (34), 2024 (34).
