Iwasakinishi, 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+
August Air Quality Analysis
Iwasakinishi, Ichihara, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
65AQILowest AQI recorded on
7th Aug 2021
11AQISame Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 50 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 6th Aug - 7th Aug 2025
Iwasakinishi, Ichihara, Chiba, Japan
AQI
Day
Night
.
4 AM6th Aug 2025
6 PM
3 AM7th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM6th Aug
59AQI
Avg. Lowest Time
11PM6th Aug
45AQI
In the last 24 hours,
Iwasakinishi's AQI reached its highest point of 59 at 12 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Iwasakinishi, Ichihara, Chiba, Japan
JulAug
08th - 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 - 06th06th - 07th07th
Day
Night
8th Jul 2025544 AMAQI
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025597 AMAQI
8th Jul 2025588 AMAQI
8th Jul 2025959 AMAQI
8th Jul 202510110 AMAQI
8th Jul 20259911 AMAQI
8th Jul 202510112 PMAQI
8th Jul 2025861 PMAQI
8th Jul 2025802 PMAQI
8th Jul 2025813 PMAQI
8th Jul 2025794 PMAQI
8th Jul 2025745 PMAQI
8th Jul 2025766 PMAQI
8th Jul 2025787 PMAQI
8th Jul 2025768 PMAQI
8th Jul 2025679 PMAQI
8th Jul 20256810 PMAQI
8th Jul 20257011 PMAQI
9th Jul 20257012 AMAQI
9th Jul 2025641 AMAQI
9th Jul 2025612 AMAQI
9th Jul 2025613 AMAQI
28°C25/31°C
9th Jul 2025624 AMAQI
9th Jul 2025645 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025657 AMAQI
9th Jul 2025648 AMAQI
9th Jul 2025809 AMAQI
9th Jul 20259310 AMAQI
9th Jul 202510211 AMAQI
9th Jul 202510612 PMAQI
9th Jul 2025941 PMAQI
9th Jul 2025962 PMAQI
9th Jul 20251013 PMAQI
9th Jul 2025824 PMAQI
9th Jul 2025655 PMAQI
9th Jul 2025586 PMAQI
9th Jul 2025567 PMAQI
9th Jul 2025538 PMAQI
9th Jul 2025629 PMAQI
9th Jul 20256210 PMAQI
9th Jul 20256211 PMAQI
10th Jul 20256212 AMAQI
10th Jul 2025661 AMAQI
10th Jul 2025672 AMAQI
10th Jul 2025673 AMAQI
28°C25/31°C
10th Jul 2025674 AMAQI
10th Jul 2025705 AMAQI
10th Jul 2025716 AMAQI
10th Jul 2025707 AMAQI
10th Jul 2025708 AMAQI
10th Jul 2025429 AMAQI
10th Jul 20253010 AMAQI
10th Jul 20254111 AMAQI
10th Jul 20253812 PMAQI
10th Jul 2025481 PMAQI
10th Jul 2025472 PMAQI
10th Jul 2025503 PMAQI
10th Jul 2025474 PMAQI
10th Jul 2025475 PMAQI
10th Jul 2025436 PMAQI
10th Jul 2025487 PMAQI
10th Jul 2025568 PMAQI
10th Jul 2025619 PMAQI
10th Jul 20256110 PMAQI
10th Jul 20256011 PMAQI
11th Jul 20256012 AMAQI
11th Jul 2025651 AMAQI
11th Jul 2025662 AMAQI
11th Jul 2025663 AMAQI
27°C23/30°C
11th Jul 2025654 AMAQI
11th Jul 2025625 AMAQI
11th Jul 2025636 AMAQI
11th Jul 2025627 AMAQI
11th Jul 2025638 AMAQI
11th Jul 2025309 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20252111 AMAQI
11th Jul 20253012 PMAQI
11th Jul 2025441 PMAQI
11th Jul 2025472 PMAQI
11th Jul 2025423 PMAQI
11th Jul 2025414 PMAQI
11th Jul 2025435 PMAQI
11th Jul 2025446 PMAQI
11th Jul 2025447 PMAQI
11th Jul 2025478 PMAQI
11th Jul 2025589 PMAQI
11th Jul 20255810 PMAQI
11th Jul 20256011 PMAQI
12th Jul 20256012 AMAQI
12th Jul 2025621 AMAQI
12th Jul 2025632 AMAQI
12th Jul 2025623 AMAQI
23°C22/25°C
12th Jul 2025624 AMAQI
12th Jul 2025615 AMAQI
12th Jul 2025616 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025618 AMAQI
12th Jul 2025509 AMAQI
12th Jul 20255110 AMAQI
12th Jul 20255111 AMAQI
12th Jul 20254912 PMAQI
12th Jul 2025521 PMAQI
12th Jul 2025532 PMAQI
12th Jul 2025523 PMAQI
12th Jul 2025554 PMAQI
12th Jul 2025525 PMAQI
12th Jul 2025516 PMAQI
12th Jul 2025487 PMAQI
12th Jul 2025468 PMAQI
12th Jul 2025579 PMAQI
12th Jul 20255710 PMAQI
12th Jul 20255711 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025591 AMAQI
13th Jul 2025602 AMAQI
13th Jul 2025603 AMAQI
24°C21/27°C
13th Jul 2025604 AMAQI
13th Jul 2025585 AMAQI
13th Jul 2025586 AMAQI
13th Jul 2025597 AMAQI
13th Jul 2025598 AMAQI
13th Jul 2025529 AMAQI
13th Jul 20254610 AMAQI
13th Jul 20255111 AMAQI
13th Jul 20254612 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025522 PMAQI
13th Jul 2025523 PMAQI
13th Jul 2025524 PMAQI
13th Jul 2025445 PMAQI
13th Jul 2025386 PMAQI
13th Jul 2025387 PMAQI
13th Jul 2025408 PMAQI
13th Jul 2025569 PMAQI
13th Jul 20255610 PMAQI
13th Jul 20255511 PMAQI
14th Jul 20255512 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025583 AMAQI
26°C23/28°C
14th Jul 2025584 AMAQI
14th Jul 2025585 AMAQI
14th Jul 2025586 AMAQI
14th Jul 2025587 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025329 AMAQI
14th Jul 20252410 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025331 PMAQI
14th Jul 2025362 PMAQI
14th Jul 2025363 PMAQI
14th Jul 2025364 PMAQI
14th Jul 2025365 PMAQI
14th Jul 2025426 PMAQI
14th Jul 2025387 PMAQI
14th Jul 2025358 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255311 PMAQI
15th Jul 20255212 AMAQI
15th Jul 2025541 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025563 AMAQI
25°C24/28°C
15th Jul 2025564 AMAQI
15th Jul 2025545 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025547 AMAQI
15th Jul 2025548 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20251810 AMAQI
15th Jul 20251811 AMAQI
15th Jul 20251812 PMAQI
15th Jul 2025291 PMAQI
15th Jul 2025312 PMAQI
15th Jul 2025363 PMAQI
15th Jul 2025324 PMAQI
15th Jul 2025385 PMAQI
15th Jul 2025426 PMAQI
15th Jul 2025377 PMAQI
15th Jul 2025328 PMAQI
15th Jul 2025519 PMAQI
15th Jul 20255210 PMAQI
15th Jul 20255211 PMAQI
16th Jul 20255312 AMAQI
16th Jul 2025531 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025543 AMAQI
26°C25/28°C
16th Jul 2025544 AMAQI
16th Jul 2025525 AMAQI
16th Jul 2025526 AMAQI
16th Jul 2025527 AMAQI
16th Jul 2025528 AMAQI
16th Jul 2025419 AMAQI
16th Jul 20253210 AMAQI
16th Jul 20252011 AMAQI
16th Jul 20251912 PMAQI
16th Jul 2025301 PMAQI
16th Jul 2025322 PMAQI
16th Jul 2025383 PMAQI
16th Jul 2025384 PMAQI
16th Jul 2025375 PMAQI
16th Jul 2025366 PMAQI
16th Jul 2025347 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025509 PMAQI
16th Jul 20255010 PMAQI
16th Jul 20255111 PMAQI
17th Jul 20255212 AMAQI
17th Jul 2025521 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
26°C25/27°C
17th Jul 2025524 AMAQI
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025528 AMAQI
17th Jul 2025429 AMAQI
17th Jul 20253410 AMAQI
17th Jul 20253411 AMAQI
17th Jul 20253212 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025412 PMAQI
17th Jul 2025403 PMAQI
17th Jul 2025374 PMAQI
17th Jul 2025375 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254910 PMAQI
17th Jul 20254811 PMAQI
18th Jul 20254812 AMAQI
18th Jul 2025511 AMAQI
18th Jul 2025522 AMAQI
18th Jul 2025513 AMAQI
27°C25/29°C
18th Jul 2025514 AMAQI
18th Jul 2025505 AMAQI
18th Jul 2025506 AMAQI
18th Jul 2025497 AMAQI
18th Jul 2025518 AMAQI
18th Jul 2025409 AMAQI
18th Jul 20253410 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025306 PMAQI
18th Jul 2025287 PMAQI
18th Jul 2025358 PMAQI
18th Jul 2025469 PMAQI
18th Jul 20254710 PMAQI
18th Jul 20254511 PMAQI
19th Jul 20254612 AMAQI
19th Jul 2025471 AMAQI
19th Jul 2025492 AMAQI
19th Jul 2025493 AMAQI
27°C25/29°C
19th Jul 2025484 AMAQI
19th Jul 2025485 AMAQI
19th Jul 2025486 AMAQI
19th Jul 2025487 AMAQI
19th Jul 2025488 AMAQI
19th Jul 2025389 AMAQI
19th Jul 20253510 AMAQI
19th Jul 20253011 AMAQI
19th Jul 20252612 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025323 PMAQI
19th Jul 2025344 PMAQI
19th Jul 2025325 PMAQI
19th Jul 2025276 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025318 PMAQI
19th Jul 2025419 PMAQI
19th Jul 20254110 PMAQI
19th Jul 20254111 PMAQI
20th Jul 20254212 AMAQI
20th Jul 2025441 AMAQI
20th Jul 2025472 AMAQI
20th Jul 2025463 AMAQI
27°C24/29°C
20th Jul 2025464 AMAQI
20th Jul 2025445 AMAQI
20th Jul 2025446 AMAQI
20th Jul 2025447 AMAQI
20th Jul 2025458 AMAQI
20th Jul 2025369 AMAQI
20th Jul 20252810 AMAQI
20th Jul 20252711 AMAQI
20th Jul 20252612 PMAQI
20th Jul 2025281 PMAQI
20th Jul 2025272 PMAQI
20th Jul 2025283 PMAQI
20th Jul 2025254 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025298 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20253810 PMAQI
20th Jul 20253811 PMAQI
21st Jul 20253912 AMAQI
21st Jul 2025411 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025423 AMAQI
27°C25/30°C
21st Jul 2025424 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025369 AMAQI
21st Jul 20253710 AMAQI
21st Jul 20252611 AMAQI
21st Jul 20253012 PMAQI
21st Jul 2025331 PMAQI
21st Jul 2025342 PMAQI
21st Jul 2025343 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025375 PMAQI
21st Jul 2025346 PMAQI
21st Jul 2025307 PMAQI
21st Jul 2025298 PMAQI
21st Jul 2025359 PMAQI
21st Jul 20253510 PMAQI
21st Jul 20253511 PMAQI
22nd Jul 20253412 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025403 AMAQI
28°C26/31°C
22nd Jul 2025394 AMAQI
22nd Jul 2025385 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025397 AMAQI
22nd Jul 2025398 AMAQI
22nd Jul 2025369 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20253111 AMAQI
22nd Jul 20253812 PMAQI
22nd Jul 2025341 PMAQI
22nd Jul 2025352 PMAQI
22nd Jul 2025323 PMAQI
22nd Jul 2025324 PMAQI
22nd Jul 2025335 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025207 PMAQI
22nd Jul 2025228 PMAQI
22nd Jul 2025319 PMAQI
22nd Jul 20253110 PMAQI
22nd Jul 20253111 PMAQI
23rd Jul 20253212 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025372 AMAQI
23rd Jul 2025363 AMAQI
28°C26/31°C
23rd Jul 2025364 AMAQI
23rd Jul 2025375 AMAQI
23rd Jul 2025376 AMAQI
23rd Jul 2025367 AMAQI
23rd Jul 2025368 AMAQI
23rd Jul 2025359 AMAQI
23rd Jul 20253510 AMAQI
23rd Jul 20254211 AMAQI
23rd Jul 20254712 PMAQI
23rd Jul 2025381 PMAQI
23rd Jul 2025362 PMAQI
23rd Jul 2025403 PMAQI
23rd Jul 2025344 PMAQI
23rd Jul 2025315 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025267 PMAQI
23rd Jul 2025248 PMAQI
23rd Jul 2025329 PMAQI
23rd Jul 20253110 PMAQI
23rd Jul 20253111 PMAQI
24th Jul 20253112 AMAQI
24th Jul 2025351 AMAQI
24th Jul 2025352 AMAQI
24th Jul 2025363 AMAQI
28°C26/31°C
24th Jul 2025364 AMAQI
24th Jul 2025365 AMAQI
24th Jul 2025376 AMAQI
24th Jul 2025367 AMAQI
24th Jul 2025378 AMAQI
24th Jul 2025489 AMAQI
24th Jul 20255310 AMAQI
24th Jul 20255411 AMAQI
24th Jul 20255812 PMAQI
24th Jul 2025561 PMAQI
24th Jul 2025502 PMAQI
24th Jul 2025383 PMAQI
24th Jul 2025324 PMAQI
24th Jul 2025275 PMAQI
24th Jul 2025236 PMAQI
24th Jul 2025217 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025289 PMAQI
24th Jul 20252810 PMAQI
24th Jul 20252811 PMAQI
25th Jul 20252812 AMAQI
25th Jul 2025321 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025333 AMAQI
28°C25/32°C
25th Jul 2025344 AMAQI
25th Jul 2025365 AMAQI
25th Jul 2025376 AMAQI
25th Jul 2025367 AMAQI
25th Jul 2025368 AMAQI
25th Jul 2025359 AMAQI
25th Jul 20253410 AMAQI
25th Jul 20253611 AMAQI
25th Jul 20253812 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025292 PMAQI
25th Jul 2025263 PMAQI
25th Jul 2025244 PMAQI
25th Jul 2025195 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025177 PMAQI
25th Jul 2025218 PMAQI
25th Jul 2025289 PMAQI
25th Jul 20252810 PMAQI
25th Jul 20252811 PMAQI
26th Jul 20252812 AMAQI
26th Jul 2025321 AMAQI
26th Jul 2025332 AMAQI
26th Jul 2025323 AMAQI
28°C26/31°C
26th Jul 2025334 AMAQI
26th Jul 2025345 AMAQI
26th Jul 2025346 AMAQI
26th Jul 2025347 AMAQI
26th Jul 2025338 AMAQI
26th Jul 2025349 AMAQI
26th Jul 20253410 AMAQI
26th Jul 20253211 AMAQI
26th Jul 20253112 PMAQI
26th Jul 2025251 PMAQI
26th Jul 2025252 PMAQI
26th Jul 2025283 PMAQI
26th Jul 2025224 PMAQI
26th Jul 2025235 PMAQI
26th Jul 2025216 PMAQI
26th Jul 2025197 PMAQI
26th Jul 2025228 PMAQI
26th Jul 2025309 PMAQI
26th Jul 20253010 PMAQI
26th Jul 20252911 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025322 AMAQI
27th Jul 2025313 AMAQI
29°C26/32°C
27th Jul 2025324 AMAQI
27th Jul 2025315 AMAQI
27th Jul 2025326 AMAQI
27th Jul 2025317 AMAQI
27th Jul 2025328 AMAQI
27th Jul 2025309 AMAQI
27th Jul 20252710 AMAQI
27th Jul 20252511 AMAQI
27th Jul 20252512 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025253 PMAQI
27th Jul 2025244 PMAQI
27th Jul 2025245 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025187 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025279 PMAQI
27th Jul 20252810 PMAQI
27th Jul 20252611 PMAQI
28th Jul 20252612 AMAQI
28th Jul 2025291 AMAQI
28th Jul 2025312 AMAQI
28th Jul 2025313 AMAQI
28°C26/31°C
28th Jul 2025314 AMAQI
28th Jul 2025305 AMAQI
28th Jul 2025306 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025308 AMAQI
28th Jul 2025389 AMAQI
28th Jul 20253510 AMAQI
28th Jul 20253811 AMAQI
28th Jul 20254612 PMAQI
28th Jul 2025511 PMAQI
28th Jul 2025492 PMAQI
28th Jul 2025423 PMAQI
28th Jul 2025384 PMAQI
28th Jul 2025325 PMAQI
28th Jul 2025286 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025258 PMAQI
28th Jul 2025279 PMAQI
28th Jul 20252710 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20252712 AMAQI
29th Jul 2025291 AMAQI
29th Jul 2025302 AMAQI
29th Jul 2025303 AMAQI
28°C26/31°C
29th Jul 2025304 AMAQI
29th Jul 2025335 AMAQI
29th Jul 2025326 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025328 AMAQI
29th Jul 2025409 AMAQI
29th Jul 20253310 AMAQI
29th Jul 20254211 AMAQI
29th Jul 20254512 PMAQI
29th Jul 2025411 PMAQI
29th Jul 2025342 PMAQI
29th Jul 2025273 PMAQI
29th Jul 2025254 PMAQI
29th Jul 2025215 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025208 PMAQI
29th Jul 2025279 PMAQI
29th Jul 20252610 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252812 AMAQI
30th Jul 2025301 AMAQI
30th Jul 2025302 AMAQI
30th Jul 2025303 AMAQI
28°C25/33°C
30th Jul 2025314 AMAQI
30th Jul 2025325 AMAQI
30th Jul 2025316 AMAQI
30th Jul 2025317 AMAQI
30th Jul 2025318 AMAQI
30th Jul 2025299 AMAQI
30th Jul 20251710 AMAQI
30th Jul 20252011 AMAQI
30th Jul 20252612 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025274 PMAQI
30th Jul 2025285 PMAQI
30th Jul 2025296 PMAQI
30th Jul 2025277 PMAQI
30th Jul 2025288 PMAQI
30th Jul 2025319 PMAQI
30th Jul 20253110 PMAQI
30th Jul 20253211 PMAQI
31st Jul 20253212 AMAQI
31st Jul 2025311 AMAQI
31st Jul 2025302 AMAQI
31st Jul 2025303 AMAQI
28°C25/33°C
31st Jul 2025294 AMAQI
31st Jul 2025295 AMAQI
31st Jul 2025296 AMAQI
31st Jul 2025297 AMAQI
31st Jul 2025298 AMAQI
31st Jul 2025299 AMAQI
31st Jul 20252910 AMAQI
31st Jul 20253811 AMAQI
31st Jul 20253612 PMAQI
31st Jul 2025331 PMAQI
31st Jul 2025382 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025304 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025236 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025268 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253110 PMAQI
31st Jul 20252811 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025301 AMAQI
1st Aug 2025362 AMAQI
1st Aug 2025363 AMAQI
27°C24/31°C
1st Aug 2025364 AMAQI
1st Aug 2025345 AMAQI
1st Aug 2025386 AMAQI
1st Aug 2025377 AMAQI
1st Aug 2025398 AMAQI
1st Aug 2025329 AMAQI
1st Aug 20252910 AMAQI
1st Aug 20253911 AMAQI
1st Aug 20254012 PMAQI
1st Aug 2025321 PMAQI
1st Aug 2025392 PMAQI
1st Aug 2025363 PMAQI
1st Aug 2025464 PMAQI
1st Aug 2025355 PMAQI
1st Aug 2025466 PMAQI
1st Aug 2025287 PMAQI
1st Aug 2025358 PMAQI
1st Aug 2025309 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252611 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025373 AMAQI
27°C25/30°C
2nd Aug 2025374 AMAQI
2nd Aug 2025405 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025398 AMAQI
2nd Aug 2025299 AMAQI
2nd Aug 20253310 AMAQI
2nd Aug 20253711 AMAQI
2nd Aug 20254212 PMAQI
2nd Aug 2025461 PMAQI
2nd Aug 2025572 PMAQI
2nd Aug 2025533 PMAQI
2nd Aug 2025544 PMAQI
2nd Aug 2025565 PMAQI
2nd Aug 2025576 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025378 PMAQI
2nd Aug 2025339 PMAQI
2nd Aug 20253410 PMAQI
2nd Aug 20254111 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025382 AMAQI
3rd Aug 2025373 AMAQI
28°C25/33°C
3rd Aug 2025404 AMAQI
3rd Aug 2025405 AMAQI
3rd Aug 2025406 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20255010 AMAQI
3rd Aug 20255111 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025491 PMAQI
3rd Aug 2025582 PMAQI
3rd Aug 2025503 PMAQI
3rd Aug 2025504 PMAQI
3rd Aug 2025465 PMAQI
3rd Aug 2025456 PMAQI
3rd Aug 2025387 PMAQI
3rd Aug 2025438 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254310 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20254212 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025383 AMAQI
29°C26/33°C
4th Aug 2025414 AMAQI
4th Aug 2025435 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025447 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025599 AMAQI
4th Aug 20257410 AMAQI
4th Aug 20258211 AMAQI
4th Aug 20258412 PMAQI
4th Aug 2025881 PMAQI
4th Aug 2025912 PMAQI
4th Aug 2025833 PMAQI
4th Aug 2025854 PMAQI
4th Aug 2025885 PMAQI
4th Aug 2025856 PMAQI
4th Aug 2025797 PMAQI
4th Aug 2025728 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20254611 PMAQI
5th Aug 20254812 AMAQI
5th Aug 2025431 AMAQI
5th Aug 2025422 AMAQI
5th Aug 2025413 AMAQI
29°C27/32°C
5th Aug 2025504 AMAQI
5th Aug 2025545 AMAQI
5th Aug 2025526 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025549 AMAQI
5th Aug 20255510 AMAQI
5th Aug 20255811 AMAQI
5th Aug 20255812 PMAQI
5th Aug 2025541 PMAQI
5th Aug 2025522 PMAQI
5th Aug 2025523 PMAQI
5th Aug 2025524 PMAQI
5th Aug 2025535 PMAQI
5th Aug 2025496 PMAQI
5th Aug 2025427 PMAQI
5th Aug 2025458 PMAQI
5th Aug 2025459 PMAQI
5th Aug 20254610 PMAQI
5th Aug 20254811 PMAQI
6th Aug 20254612 AMAQI
6th Aug 2025481 AMAQI
6th Aug 2025492 AMAQI
6th Aug 2025493 AMAQI
29°C27/32°C
6th Aug 2025524 AMAQI
6th Aug 2025525 AMAQI
6th Aug 2025526 AMAQI
6th Aug 2025527 AMAQI
6th Aug 2025528 AMAQI
6th Aug 2025519 AMAQI
6th Aug 20255210 AMAQI
6th Aug 20255211 AMAQI
6th Aug 20255912 PMAQI
6th Aug 2025561 PMAQI
6th Aug 2025562 PMAQI
6th Aug 2025513 PMAQI
6th Aug 2025564 PMAQI
6th Aug 2025595 PMAQI
6th Aug 2025546 PMAQI
6th Aug 2025577 PMAQI
6th Aug 2025548 PMAQI
6th Aug 2025479 PMAQI
6th Aug 20254910 PMAQI
6th Aug 20254511 PMAQI
7th Aug 20254912 AMAQI
7th Aug 2025481 AMAQI
7th Aug 2025522 AMAQI
--°C/°C
4 AM
11 AM
6 PM
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
6 PM
38AQI
1 hours / Day
30 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 6 PM to 6 PM (Avg. 38).
Night time
Avg. Highest Time
12 AM - 3 AM
44AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM
35AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 44), while the lowest AQI was between 7 PM to 7 PM (Avg. 35).
2025 Days Vs Air Quality
Iwasakinishi, Ichihara, Chiba, Japan
2025
88%
192
12%
25
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Good
192 DaysModerate
25 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 218 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
Iwasakinishi, 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.
1st January 2025
30AQI
30AQI
2nd January 2025
35AQI
35AQI
3rd January 2025
25AQI
25AQI
4th January 2025
30AQI
30AQI
5th January 2025
37AQI
37AQI
6th January 2025
57AQI
57AQI
7th January 2025
31AQI
31AQI
8th January 2025
36AQI
36AQI
9th January 2025
31AQI
31AQI
10th January 2025
30AQI
30AQI
11th January 2025
28AQI
28AQI
12th January 2025
36AQI
36AQI
13th January 2025
30AQI
30AQI
14th January 2025
43AQI
43AQI
15th January 2025
37AQI
37AQI
16th January 2025
35AQI
35AQI
17th January 2025
31AQI
31AQI
18th January 2025
31AQI
31AQI
19th January 2025
55AQI
55AQI
20th January 2025
47AQI
47AQI
21st January 2025
44AQI
44AQI
22nd January 2025
40AQI
40AQI
23rd January 2025
57AQI
57AQI
24th January 2025
49AQI
49AQI
25th January 2025
44AQI
44AQI
26th January 2025
38AQI
38AQI
27th January 2025
39AQI
39AQI
28th January 2025
40AQI
40AQI
29th January 2025
33AQI
33AQI
30th January 2025
37AQI
37AQI
31st January 2025
28AQI
28AQI
1st February 2025
42AQI
42AQI
2nd February 2025
33AQI
33AQI
3rd February 2025
48AQI
48AQI
4th February 2025
31AQI
31AQI
5th February 2025
37AQI
37AQI
6th February 2025
29AQI
29AQI
7th February 2025
32AQI
32AQI
8th February 2025
29AQI
29AQI
9th February 2025
30AQI
30AQI
10th February 2025
29AQI
29AQI
11th February 2025
31AQI
31AQI
12th February 2025
36AQI
36AQI
13th February 2025
32AQI
32AQI
14th February 2025
30AQI
30AQI
15th February 2025
30AQI
30AQI
16th February 2025
39AQI
39AQI
17th February 2025
37AQI
37AQI
18th February 2025
32AQI
32AQI
19th February 2025
30AQI
30AQI
20th February 2025
30AQI
30AQI
21st February 2025
30AQI
30AQI
22nd February 2025
33AQI
33AQI
23rd February 2025
32AQI
32AQI
24th February 2025
34AQI
34AQI
25th February 2025
35AQI
35AQI
26th February 2025
34AQI
34AQI
27th February 2025
40AQI
40AQI
28th February 2025
60AQI
60AQI
1st March 2025
51AQI
51AQI
2nd March 2025
69AQI
69AQI
3rd March 2025
42AQI
42AQI
4th March 2025
43AQI
43AQI
5th March 2025
27AQI
27AQI
6th March 2025
35AQI
35AQI
7th March 2025
31AQI
31AQI
8th March 2025
35AQI
35AQI
9th March 2025
33AQI
33AQI
10th March 2025
36AQI
36AQI
11th March 2025
42AQI
42AQI
12th March 2025
52AQI
52AQI
13th March 2025
47AQI
47AQI
14th March 2025
45AQI
45AQI
15th March 2025
39AQI
39AQI
16th March 2025
29AQI
29AQI
17th March 2025
24AQI
24AQI
18th March 2025
27AQI
27AQI
19th March 2025
19AQI
19AQI
20th March 2025
26AQI
26AQI
21st March 2025
46AQI
46AQI
22nd March 2025
51AQI
51AQI
23rd March 2025
60AQI
60AQI
24th March 2025
56AQI
56AQI
25th March 2025
68AQI
68AQI
26th March 2025
83AQI
83AQI
27th March 2025
70AQI
70AQI
28th March 2025
50AQI
50AQI
29th March 2025
38AQI
38AQI
30th March 2025
45AQI
45AQI
31st March 2025
33AQI
33AQI
1st April 2025
30AQI
30AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
22AQI
22AQI
4th April 2025
22AQI
22AQI
5th April 2025
24AQI
24AQI
6th April 2025
24AQI
24AQI
7th April 2025
32AQI
32AQI
8th April 2025
40AQI
40AQI
9th April 2025
26AQI
26AQI
10th April 2025
48AQI
48AQI
11th April 2025
41AQI
41AQI
12th April 2025
37AQI
37AQI
13th April 2025
29AQI
29AQI
14th April 2025
41AQI
41AQI
15th April 2025
32AQI
32AQI
16th April 2025
36AQI
36AQI
17th April 2025
48AQI
48AQI
18th April 2025
50AQI
50AQI
19th April 2025
62AQI
62AQI
20th April 2025
46AQI
46AQI
21st April 2025
44AQI
44AQI
22nd April 2025
43AQI
43AQI
23rd April 2025
30AQI
30AQI
24th April 2025
37AQI
37AQI
25th April 2025
37AQI
37AQI
26th April 2025
42AQI
42AQI
27th April 2025
48AQI
48AQI
28th April 2025
39AQI
39AQI
29th April 2025
38AQI
38AQI
30th April 2025
44AQI
44AQI
1st May 2025
41AQI
41AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
33AQI
33AQI
4th May 2025
37AQI
37AQI
5th May 2025
36AQI
36AQI
6th May 2025
27AQI
27AQI
7th May 2025
26AQI
26AQI
8th May 2025
26AQI
26AQI
9th May 2025
28AQI
28AQI
10th May 2025
24AQI
24AQI
11th May 2025
30AQI
30AQI
12th May 2025
33AQI
33AQI
13th May 2025
36AQI
36AQI
14th May 2025
35AQI
35AQI
15th May 2025
38AQI
38AQI
16th May 2025
38AQI
38AQI
17th May 2025
27AQI
27AQI
18th May 2025
43AQI
43AQI
19th May 2025
41AQI
41AQI
20th May 2025
60AQI
60AQI
21st May 2025
39AQI
39AQI
22nd May 2025
41AQI
41AQI
23rd May 2025
39AQI
39AQI
24th May 2025
36AQI
36AQI
25th May 2025
31AQI
31AQI
26th May 2025
27AQI
27AQI
27th May 2025
26AQI
26AQI
28th May 2025
25AQI
25AQI
29th May 2025
25AQI
25AQI
30th May 2025
24AQI
24AQI
31st May 2025
16AQI
16AQI
1st June 2025
20AQI
20AQI
2nd June 2025
27AQI
27AQI
3rd June 2025
27AQI
27AQI
4th June 2025
34AQI
34AQI
5th June 2025
40AQI
40AQI
6th June 2025
46AQI
46AQI
7th June 2025
46AQI
46AQI
8th June 2025
51AQI
51AQI
9th June 2025
37AQI
37AQI
10th June 2025
29AQI
29AQI
11th June 2025
26AQI
26AQI
12th June 2025
33AQI
33AQI
13th June 2025
31AQI
31AQI
14th June 2025
30AQI
30AQI
15th June 2025
34AQI
34AQI
16th June 2025
39AQI
39AQI
17th June 2025
46AQI
46AQI
18th June 2025
45AQI
45AQI
19th June 2025
43AQI
43AQI
20th June 2025
37AQI
37AQI
21st June 2025
33AQI
33AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
24AQI
24AQI
24th June 2025
22AQI
22AQI
25th June 2025
21AQI
21AQI
26th June 2025
22AQI
22AQI
27th June 2025
30AQI
30AQI
28th June 2025
28AQI
28AQI
29th June 2025
31AQI
31AQI
30th June 2025
35AQI
35AQI
1st July 2025
34AQI
34AQI
2nd July 2025
37AQI
37AQI
3rd July 2025
38AQI
38AQI
4th July 2025
40AQI
40AQI
5th July 2025
45AQI
45AQI
6th July 2025
60AQI
60AQI
7th July 2025
68AQI
68AQI
8th July 2025
70AQI
70AQI
9th July 2025
70AQI
70AQI
10th July 2025
57AQI
57AQI
11th July 2025
53AQI
53AQI
12th July 2025
56AQI
56AQI
13th July 2025
53AQI
53AQI
14th July 2025
47AQI
47AQI
15th July 2025
45AQI
45AQI
16th July 2025
45AQI
45AQI
17th July 2025
45AQI
45AQI
18th July 2025
43AQI
43AQI
19th July 2025
40AQI
40AQI
20th July 2025
37AQI
37AQI
21st July 2025
37AQI
37AQI
22nd July 2025
33AQI
33AQI
23rd July 2025
34AQI
34AQI
24th July 2025
35AQI
35AQI
25th July 2025
29AQI
29AQI
26th July 2025
29AQI
29AQI
27th July 2025
27AQI
27AQI
28th July 2025
31AQI
31AQI
29th July 2025
29AQI
29AQI
30th July 2025
28AQI
28AQI
31st July 2025
29AQI
29AQI
1st August 2025
34AQI
34AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
43AQI
43AQI
4th August 2025
61AQI
61AQI
5th August 2025
50AQI
50AQI
38AQI
34AQI
44AQI
37AQI
33AQI
33AQI
43AQI
46AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202538AQI
28
3
27
1
22
9
29
1
30
1
29
1
23
8
4
1
192
25
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
May33AQI
202436AQI
30
1
28
1
25
6
25
5
28
3
28
2
19
12
30
1
28
2
31
27
3
31
330
36
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
September29AQI
202338AQI
24
7
23
5
29
2
24
6
29
2
23
7
26
5
30
1
29
1
31
21
8
24
7
313
51
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August27AQI
202237AQI
26
4
19
2
23
8
23
6
27
4
25
5
18
3
1
28
28
3
27
3
28
3
273
41
Highest AQI recorded in
March44AQI
Lowest AQI recorded in
August17AQI
202135AQI
22
8
22
6
25
6
28
2
26
5
27
3
28
3
27
4
29
1
28
3
24
6
21
10
307
57
Highest AQI recorded in
December41AQI
Lowest AQI recorded in
August29AQI
202034AQI
12
1
19
2
17
1
23
7
31
23
8
19
30
1
25
5
23
8
222
33
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
September26AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
38AQILeast Polluted Year Recorded
2020(Avg.)
34AQIIwasakinishi's annual 2025 AQI (38) shows an average percentage change of 4.1% (worsened AQI) compared to previous years: 2020 (34), 2021 (35), 2022 (37), 2023 (38), 2024 (36).
