Tsuiheiji, 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
Tsuiheiji, Ichihara, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
28th Aug 2021
70AQILowest AQI recorded on
3rd Aug 2023
14AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 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
Tsuiheiji, Ichihara, Chiba, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
1PM4th Aug
90AQI
Avg. Lowest Time
4AM4th Aug
41AQI
Night time
Avg. Highest Time
7PM4th Aug
78AQI
Avg. Lowest Time
3AM5th Aug
40AQI
In the last 24 hours,
Tsuiheiji's AQI reached its highest point of 90 at 1 PM during the Day, while the lowest point, 40, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Tsuiheiji, Ichihara, Chiba, 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 2025364 AMAQI
6th Jul 2025385 AMAQI
6th Jul 2025386 AMAQI
6th Jul 2025387 AMAQI
6th Jul 2025388 AMAQI
6th Jul 2025719 AMAQI
6th Jul 20259510 AMAQI
6th Jul 202510911 AMAQI
6th Jul 20259812 PMAQI
6th Jul 2025801 PMAQI
6th Jul 2025842 PMAQI
6th Jul 2025823 PMAQI
6th Jul 2025904 PMAQI
6th Jul 2025885 PMAQI
6th Jul 2025906 PMAQI
6th Jul 2025937 PMAQI
6th Jul 2025778 PMAQI
6th Jul 2025559 PMAQI
6th Jul 20255510 PMAQI
6th Jul 20255411 PMAQI
7th Jul 20255412 AMAQI
7th Jul 2025451 AMAQI
7th Jul 2025412 AMAQI
7th Jul 2025393 AMAQI
28°C25/32°C
7th Jul 2025424 AMAQI
7th Jul 2025455 AMAQI
7th Jul 2025436 AMAQI
7th Jul 2025447 AMAQI
7th Jul 2025458 AMAQI
7th Jul 2025879 AMAQI
7th Jul 202511510 AMAQI
7th Jul 202512011 AMAQI
7th Jul 202511512 PMAQI
7th Jul 2025911 PMAQI
7th Jul 2025852 PMAQI
7th Jul 2025813 PMAQI
7th Jul 2025804 PMAQI
7th Jul 2025805 PMAQI
7th Jul 2025866 PMAQI
7th Jul 2025897 PMAQI
7th Jul 2025828 PMAQI
7th Jul 2025659 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256411 PMAQI
8th Jul 20256012 AMAQI
8th Jul 2025561 AMAQI
8th Jul 2025542 AMAQI
8th Jul 2025543 AMAQI
28°C25/32°C
8th Jul 2025544 AMAQI
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025588 AMAQI
8th Jul 2025869 AMAQI
8th Jul 20259410 AMAQI
8th Jul 20259411 AMAQI
8th Jul 20259612 PMAQI
8th Jul 2025861 PMAQI
8th Jul 2025822 PMAQI
8th Jul 2025813 PMAQI
8th Jul 2025784 PMAQI
8th Jul 2025785 PMAQI
8th Jul 2025786 PMAQI
8th Jul 2025807 PMAQI
8th Jul 2025778 PMAQI
8th Jul 2025689 PMAQI
8th Jul 20256910 PMAQI
8th Jul 20257011 PMAQI
9th Jul 20256912 AMAQI
9th Jul 2025631 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 2025647 AMAQI
9th Jul 2025648 AMAQI
9th Jul 2025789 AMAQI
9th Jul 20259110 AMAQI
9th Jul 20259611 AMAQI
9th Jul 20259712 PMAQI
9th Jul 2025931 PMAQI
9th Jul 2025992 PMAQI
9th Jul 20251063 PMAQI
9th Jul 2025864 PMAQI
9th Jul 2025645 PMAQI
9th Jul 2025596 PMAQI
9th Jul 2025567 PMAQI
9th Jul 2025558 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 2025684 AMAQI
10th Jul 2025705 AMAQI
10th Jul 2025726 AMAQI
10th Jul 2025707 AMAQI
10th Jul 2025718 AMAQI
10th Jul 2025349 AMAQI
10th Jul 20253510 AMAQI
10th Jul 20253611 AMAQI
10th Jul 20253712 PMAQI
10th Jul 2025511 PMAQI
10th Jul 2025492 PMAQI
10th Jul 2025543 PMAQI
10th Jul 2025524 PMAQI
10th Jul 2025465 PMAQI
10th Jul 2025456 PMAQI
10th Jul 2025487 PMAQI
10th Jul 2025588 PMAQI
10th Jul 2025619 PMAQI
10th Jul 20256210 PMAQI
10th Jul 20256111 PMAQI
11th Jul 20256212 AMAQI
11th Jul 2025651 AMAQI
11th Jul 2025672 AMAQI
11th Jul 2025673 AMAQI
27°C23/30°C
11th Jul 2025664 AMAQI
11th Jul 2025645 AMAQI
11th Jul 2025646 AMAQI
11th Jul 2025647 AMAQI
11th Jul 2025638 AMAQI
11th Jul 2025329 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20251811 AMAQI
11th Jul 20252712 PMAQI
11th Jul 2025461 PMAQI
11th Jul 2025462 PMAQI
11th Jul 2025463 PMAQI
11th Jul 2025444 PMAQI
11th Jul 2025465 PMAQI
11th Jul 2025466 PMAQI
11th Jul 2025477 PMAQI
11th Jul 2025508 PMAQI
11th Jul 2025609 PMAQI
11th Jul 20256010 PMAQI
11th Jul 20256011 PMAQI
12th Jul 20256012 AMAQI
12th Jul 2025621 AMAQI
12th Jul 2025632 AMAQI
12th Jul 2025633 AMAQI
23°C22/25°C
12th Jul 2025624 AMAQI
12th Jul 2025625 AMAQI
12th Jul 2025626 AMAQI
12th Jul 2025617 AMAQI
12th Jul 2025628 AMAQI
12th Jul 2025469 AMAQI
12th Jul 20254610 AMAQI
12th Jul 20254611 AMAQI
12th Jul 20255212 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025542 PMAQI
12th Jul 2025543 PMAQI
12th Jul 2025554 PMAQI
12th Jul 2025525 PMAQI
12th Jul 2025516 PMAQI
12th Jul 2025487 PMAQI
12th Jul 2025508 PMAQI
12th Jul 2025589 PMAQI
12th Jul 20255710 PMAQI
12th Jul 20255811 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025601 AMAQI
13th Jul 2025612 AMAQI
13th Jul 2025613 AMAQI
24°C21/27°C
13th Jul 2025604 AMAQI
13th Jul 2025595 AMAQI
13th Jul 2025596 AMAQI
13th Jul 2025607 AMAQI
13th Jul 2025608 AMAQI
13th Jul 2025489 AMAQI
13th Jul 20253910 AMAQI
13th Jul 20253911 AMAQI
13th Jul 20253912 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025502 PMAQI
13th Jul 2025503 PMAQI
13th Jul 2025504 PMAQI
13th Jul 2025435 PMAQI
13th Jul 2025396 PMAQI
13th Jul 2025367 PMAQI
13th Jul 2025398 PMAQI
13th Jul 2025559 PMAQI
13th Jul 20255510 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 2025339 AMAQI
14th Jul 20252510 AMAQI
14th Jul 20252111 AMAQI
14th Jul 20252612 PMAQI
14th Jul 2025321 PMAQI
14th Jul 2025342 PMAQI
14th Jul 2025343 PMAQI
14th Jul 2025364 PMAQI
14th Jul 2025375 PMAQI
14th Jul 2025386 PMAQI
14th Jul 2025377 PMAQI
14th Jul 2025388 PMAQI
14th Jul 2025529 PMAQI
14th Jul 20255210 PMAQI
14th Jul 20255211 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 2025259 AMAQI
15th Jul 20251710 AMAQI
15th Jul 20251811 AMAQI
15th Jul 20252112 PMAQI
15th Jul 2025301 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025353 PMAQI
15th Jul 2025334 PMAQI
15th Jul 2025365 PMAQI
15th Jul 2025396 PMAQI
15th Jul 2025357 PMAQI
15th Jul 2025348 PMAQI
15th Jul 2025509 PMAQI
15th Jul 20255110 PMAQI
15th Jul 20255111 PMAQI
16th Jul 20255212 AMAQI
16th Jul 2025531 AMAQI
16th Jul 2025542 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 2025439 AMAQI
16th Jul 20252510 AMAQI
16th Jul 20251911 AMAQI
16th Jul 20252112 PMAQI
16th Jul 2025281 PMAQI
16th Jul 2025302 PMAQI
16th Jul 2025313 PMAQI
16th Jul 2025294 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025326 PMAQI
16th Jul 2025297 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025489 PMAQI
16th Jul 20254710 PMAQI
16th Jul 20254811 PMAQI
17th Jul 20254812 AMAQI
17th Jul 2025521 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
26°C25/27°C
17th Jul 2025524 AMAQI
17th Jul 2025515 AMAQI
17th Jul 2025516 AMAQI
17th Jul 2025507 AMAQI
17th Jul 2025518 AMAQI
17th Jul 2025339 AMAQI
17th Jul 20252810 AMAQI
17th Jul 20252911 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025372 PMAQI
17th Jul 2025383 PMAQI
17th Jul 2025364 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025336 PMAQI
17th Jul 2025307 PMAQI
17th Jul 2025388 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254810 PMAQI
17th Jul 20254611 PMAQI
18th Jul 20254512 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025512 AMAQI
18th Jul 2025513 AMAQI
27°C25/29°C
18th Jul 2025504 AMAQI
18th Jul 2025495 AMAQI
18th Jul 2025496 AMAQI
18th Jul 2025497 AMAQI
18th Jul 2025488 AMAQI
18th Jul 2025319 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252011 AMAQI
18th Jul 20252512 PMAQI
18th Jul 2025321 PMAQI
18th Jul 2025342 PMAQI
18th Jul 2025323 PMAQI
18th Jul 2025334 PMAQI
18th Jul 2025295 PMAQI
18th Jul 2025316 PMAQI
18th Jul 2025307 PMAQI
18th Jul 2025368 PMAQI
18th Jul 2025439 PMAQI
18th Jul 20254310 PMAQI
18th Jul 20254311 PMAQI
19th Jul 20254312 AMAQI
19th Jul 2025451 AMAQI
19th Jul 2025482 AMAQI
19th Jul 2025483 AMAQI
27°C25/29°C
19th Jul 2025464 AMAQI
19th Jul 2025445 AMAQI
19th Jul 2025466 AMAQI
19th Jul 2025457 AMAQI
19th Jul 2025458 AMAQI
19th Jul 2025329 AMAQI
19th Jul 20252710 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025261 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025253 PMAQI
19th Jul 2025244 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025246 PMAQI
19th Jul 2025197 PMAQI
19th Jul 2025298 PMAQI
19th Jul 2025359 PMAQI
19th Jul 20253310 PMAQI
19th Jul 20253511 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025441 AMAQI
20th Jul 2025462 AMAQI
20th Jul 2025463 AMAQI
27°C24/29°C
20th Jul 2025454 AMAQI
20th Jul 2025425 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025428 AMAQI
20th Jul 2025319 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252011 AMAQI
20th Jul 20251912 PMAQI
20th Jul 2025181 PMAQI
20th Jul 2025202 PMAQI
20th Jul 2025183 PMAQI
20th Jul 2025184 PMAQI
20th Jul 2025155 PMAQI
20th Jul 2025206 PMAQI
20th Jul 2025237 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025319 PMAQI
20th Jul 20253410 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20253612 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025422 AMAQI
21st Jul 2025423 AMAQI
27°C25/30°C
21st Jul 2025424 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025386 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025289 AMAQI
21st Jul 20252810 AMAQI
21st Jul 20252711 AMAQI
21st Jul 20252912 PMAQI
21st Jul 2025321 PMAQI
21st Jul 2025362 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025254 PMAQI
21st Jul 2025325 PMAQI
21st Jul 2025306 PMAQI
21st Jul 2025287 PMAQI
21st Jul 2025248 PMAQI
21st Jul 2025289 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253211 PMAQI
22nd Jul 20253112 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025393 AMAQI
28°C26/31°C
22nd Jul 2025384 AMAQI
22nd Jul 2025375 AMAQI
22nd Jul 2025386 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025259 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252611 AMAQI
22nd Jul 20252612 PMAQI
22nd Jul 2025331 PMAQI
22nd Jul 2025342 PMAQI
22nd Jul 2025373 PMAQI
22nd Jul 2025334 PMAQI
22nd Jul 2025255 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025207 PMAQI
22nd Jul 2025238 PMAQI
22nd Jul 2025279 PMAQI
22nd Jul 20252810 PMAQI
22nd Jul 20252811 PMAQI
23rd Jul 20252912 AMAQI
23rd Jul 2025341 AMAQI
23rd Jul 2025372 AMAQI
23rd Jul 2025373 AMAQI
28°C26/31°C
23rd Jul 2025374 AMAQI
23rd Jul 2025365 AMAQI
23rd Jul 2025366 AMAQI
23rd Jul 2025367 AMAQI
23rd Jul 2025368 AMAQI
23rd Jul 2025279 AMAQI
23rd Jul 20252610 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20252912 PMAQI
23rd Jul 2025321 PMAQI
23rd Jul 2025302 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025274 PMAQI
23rd Jul 2025305 PMAQI
23rd Jul 2025286 PMAQI
23rd Jul 2025197 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025259 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20252612 AMAQI
24th Jul 2025301 AMAQI
24th Jul 2025352 AMAQI
24th Jul 2025343 AMAQI
28°C26/31°C
24th Jul 2025344 AMAQI
24th Jul 2025335 AMAQI
24th Jul 2025336 AMAQI
24th Jul 2025347 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025419 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255611 AMAQI
24th Jul 20256012 PMAQI
24th Jul 2025601 PMAQI
24th Jul 2025542 PMAQI
24th Jul 2025483 PMAQI
24th Jul 2025284 PMAQI
24th Jul 2025255 PMAQI
24th Jul 2025206 PMAQI
24th Jul 2025177 PMAQI
24th Jul 2025188 PMAQI
24th Jul 2025229 PMAQI
24th Jul 20252710 PMAQI
24th Jul 20252911 PMAQI
25th Jul 20252812 AMAQI
25th Jul 2025301 AMAQI
25th Jul 2025322 AMAQI
25th Jul 2025323 AMAQI
28°C25/32°C
25th Jul 2025344 AMAQI
25th Jul 2025385 AMAQI
25th Jul 2025386 AMAQI
25th Jul 2025377 AMAQI
25th Jul 2025378 AMAQI
25th Jul 2025269 AMAQI
25th Jul 20252610 AMAQI
25th Jul 20253011 AMAQI
25th Jul 20252612 PMAQI
25th Jul 2025241 PMAQI
25th Jul 2025222 PMAQI
25th Jul 2025213 PMAQI
25th Jul 2025244 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025186 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025198 PMAQI
25th Jul 2025279 PMAQI
25th Jul 20252710 PMAQI
25th Jul 20252511 PMAQI
26th Jul 20252712 AMAQI
26th Jul 2025311 AMAQI
26th Jul 2025342 AMAQI
26th Jul 2025333 AMAQI
28°C26/31°C
26th Jul 2025324 AMAQI
26th Jul 2025325 AMAQI
26th Jul 2025326 AMAQI
26th Jul 2025327 AMAQI
26th Jul 2025328 AMAQI
26th Jul 2025229 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252811 AMAQI
26th Jul 20252812 PMAQI
26th Jul 2025201 PMAQI
26th Jul 2025202 PMAQI
26th Jul 2025243 PMAQI
26th Jul 2025204 PMAQI
26th Jul 2025225 PMAQI
26th Jul 2025216 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025238 PMAQI
26th Jul 2025269 PMAQI
26th Jul 20252510 PMAQI
26th Jul 20252611 PMAQI
27th Jul 20252412 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025322 AMAQI
27th Jul 2025313 AMAQI
29°C26/32°C
27th Jul 2025314 AMAQI
27th Jul 2025305 AMAQI
27th Jul 2025306 AMAQI
27th Jul 2025307 AMAQI
27th Jul 2025308 AMAQI
27th Jul 2025269 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20251811 AMAQI
27th Jul 20251512 PMAQI
27th Jul 2025241 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025203 PMAQI
27th Jul 2025234 PMAQI
27th Jul 2025235 PMAQI
27th Jul 2025166 PMAQI
27th Jul 2025187 PMAQI
27th Jul 2025208 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252410 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252412 AMAQI
28th Jul 2025261 AMAQI
28th Jul 2025302 AMAQI
28th Jul 2025293 AMAQI
28°C26/31°C
28th Jul 2025294 AMAQI
28th Jul 2025285 AMAQI
28th Jul 2025286 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025288 AMAQI
28th Jul 2025339 AMAQI
28th Jul 20254210 AMAQI
28th Jul 20253511 AMAQI
28th Jul 20254912 PMAQI
28th Jul 2025551 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025483 PMAQI
28th Jul 2025394 PMAQI
28th Jul 2025315 PMAQI
28th Jul 2025236 PMAQI
28th Jul 2025187 PMAQI
28th Jul 2025268 PMAQI
28th Jul 2025249 PMAQI
28th Jul 20252110 PMAQI
28th Jul 20252411 PMAQI
29th Jul 20252312 AMAQI
29th Jul 2025271 AMAQI
29th Jul 2025282 AMAQI
29th Jul 2025283 AMAQI
28°C26/31°C
29th Jul 2025294 AMAQI
29th Jul 2025325 AMAQI
29th Jul 2025326 AMAQI
29th Jul 2025327 AMAQI
29th Jul 2025318 AMAQI
29th Jul 2025329 AMAQI
29th Jul 20253410 AMAQI
29th Jul 20253711 AMAQI
29th Jul 20253312 PMAQI
29th Jul 2025341 PMAQI
29th Jul 2025292 PMAQI
29th Jul 2025263 PMAQI
29th Jul 2025234 PMAQI
29th Jul 2025225 PMAQI
29th Jul 2025216 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025188 PMAQI
29th Jul 2025239 PMAQI
29th Jul 20252110 PMAQI
29th Jul 20252111 PMAQI
30th Jul 20252512 AMAQI
30th Jul 2025291 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025293 AMAQI
28°C25/33°C
30th Jul 2025304 AMAQI
30th Jul 2025295 AMAQI
30th Jul 2025306 AMAQI
30th Jul 2025307 AMAQI
30th Jul 2025308 AMAQI
30th Jul 2025229 AMAQI
30th Jul 20252110 AMAQI
30th Jul 20252311 AMAQI
30th Jul 20252312 PMAQI
30th Jul 2025231 PMAQI
30th Jul 2025242 PMAQI
30th Jul 2025243 PMAQI
30th Jul 2025264 PMAQI
30th Jul 2025325 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025307 PMAQI
30th Jul 2025328 PMAQI
30th Jul 2025329 PMAQI
30th Jul 20253410 PMAQI
30th Jul 20253411 PMAQI
31st Jul 20253412 AMAQI
31st Jul 2025311 AMAQI
31st Jul 2025282 AMAQI
31st Jul 2025283 AMAQI
28°C25/33°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 20253411 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025281 PMAQI
31st Jul 2025302 PMAQI
31st Jul 2025293 PMAQI
31st Jul 2025284 PMAQI
31st Jul 2025295 PMAQI
31st Jul 2025286 PMAQI
31st Jul 2025317 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025362 AMAQI
1st Aug 2025373 AMAQI
27°C24/31°C
1st Aug 2025364 AMAQI
1st Aug 2025355 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025377 AMAQI
1st Aug 2025398 AMAQI
1st Aug 2025309 AMAQI
1st Aug 20252910 AMAQI
1st Aug 20253511 AMAQI
1st Aug 20253612 PMAQI
1st Aug 2025301 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025293 PMAQI
1st Aug 2025414 PMAQI
1st Aug 2025345 PMAQI
1st Aug 2025406 PMAQI
1st Aug 2025247 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025289 PMAQI
1st Aug 20252910 PMAQI
1st Aug 20252511 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025311 AMAQI
2nd Aug 2025372 AMAQI
2nd Aug 2025373 AMAQI
27°C25/30°C
2nd Aug 2025384 AMAQI
2nd Aug 2025395 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025299 AMAQI
2nd Aug 20252810 AMAQI
2nd Aug 20253311 AMAQI
2nd Aug 20253812 PMAQI
2nd Aug 2025451 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025533 PMAQI
2nd Aug 2025544 PMAQI
2nd Aug 2025445 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025487 PMAQI
2nd Aug 2025348 PMAQI
2nd Aug 2025349 PMAQI
2nd Aug 20253210 PMAQI
2nd Aug 20254111 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
28°C25/33°C
3rd Aug 2025394 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025399 AMAQI
3rd Aug 20254810 AMAQI
3rd Aug 20255011 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025532 PMAQI
3rd Aug 2025443 PMAQI
3rd Aug 2025464 PMAQI
3rd Aug 2025425 PMAQI
3rd Aug 2025456 PMAQI
3rd Aug 2025367 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025409 PMAQI
3rd Aug 20254410 PMAQI
3rd Aug 20254011 PMAQI
4th Aug 20254112 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025383 AMAQI
29°C26/33°C
4th Aug 2025414 AMAQI
4th Aug 2025425 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025427 AMAQI
4th Aug 2025428 AMAQI
4th Aug 2025599 AMAQI
4th Aug 20257310 AMAQI
4th Aug 20258311 AMAQI
4th Aug 20258412 PMAQI
4th Aug 2025901 PMAQI
4th Aug 2025882 PMAQI
4th Aug 2025863 PMAQI
4th Aug 2025854 PMAQI
4th Aug 2025895 PMAQI
4th Aug 2025866 PMAQI
4th Aug 2025787 PMAQI
4th Aug 2025708 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20254611 PMAQI
5th Aug 20254712 AMAQI
5th Aug 2025431 AMAQI
5th Aug 2025402 AMAQI
5th Aug 2025403 AMAQI
29°C27/32°C
5th Aug 2025504 AMAQI
4 AM5th Aug 2025545 AMAQI
5th Aug 2025536 AMAQI
5th Aug 2025517 AMAQI
5th Aug 2025548 AMAQI
5th Aug 2025529 AMAQI
5th Aug 20255810 AMAQI
5th Aug 20255911 AMAQI
11 AM5th Aug 20255812 PMAQI
5th Aug 2025541 PMAQI
5th Aug 2025472 PMAQI
5th Aug 2025523 PMAQI
5th Aug 2025504 PMAQI
5th Aug 2025465 PMAQI
5th Aug 2025446 PMAQI
6 PM11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
45AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
9 AM - 6 PM
42AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 45), while the lowest AQI was between 9 AM to 6 PM (Avg. 42).
Night time
Avg. Highest Time
12 AM - 3 AM
43AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM
37AQI
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. 43), while the lowest AQI was between 7 PM to 7 PM (Avg. 37).
2025 Days Vs Air Quality
Tsuiheiji, Ichihara, Chiba, Japan
2025
90%
194
10%
22
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
194 DaysModerate
22 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% 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
Tsuiheiji, 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
31AQI
31AQI
2nd January 2025
34AQI
34AQI
3rd January 2025
25AQI
25AQI
4th January 2025
31AQI
31AQI
5th January 2025
38AQI
38AQI
6th January 2025
58AQI
58AQI
7th January 2025
31AQI
31AQI
8th January 2025
38AQI
38AQI
9th January 2025
29AQI
29AQI
10th January 2025
30AQI
30AQI
11th January 2025
26AQI
26AQI
12th January 2025
38AQI
38AQI
13th January 2025
28AQI
28AQI
14th January 2025
43AQI
43AQI
15th January 2025
36AQI
36AQI
16th January 2025
33AQI
33AQI
17th January 2025
29AQI
29AQI
18th January 2025
32AQI
32AQI
19th January 2025
55AQI
55AQI
20th January 2025
44AQI
44AQI
21st January 2025
43AQI
43AQI
22nd January 2025
40AQI
40AQI
23rd January 2025
54AQI
54AQI
24th January 2025
49AQI
49AQI
25th January 2025
45AQI
45AQI
26th January 2025
39AQI
39AQI
27th January 2025
40AQI
40AQI
28th January 2025
39AQI
39AQI
29th January 2025
32AQI
32AQI
30th January 2025
32AQI
32AQI
31st January 2025
29AQI
29AQI
1st February 2025
41AQI
41AQI
2nd February 2025
32AQI
32AQI
3rd February 2025
48AQI
48AQI
4th February 2025
31AQI
31AQI
5th February 2025
36AQI
36AQI
6th February 2025
30AQI
30AQI
7th February 2025
30AQI
30AQI
8th February 2025
30AQI
30AQI
9th February 2025
30AQI
30AQI
10th February 2025
33AQI
33AQI
11th February 2025
31AQI
31AQI
12th February 2025
34AQI
34AQI
13th February 2025
31AQI
31AQI
14th February 2025
30AQI
30AQI
15th February 2025
30AQI
30AQI
16th February 2025
42AQI
42AQI
17th February 2025
36AQI
36AQI
18th February 2025
34AQI
34AQI
19th February 2025
31AQI
31AQI
20th February 2025
31AQI
31AQI
21st February 2025
31AQI
31AQI
22nd February 2025
33AQI
33AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
34AQI
34AQI
26th February 2025
35AQI
35AQI
27th February 2025
40AQI
40AQI
28th February 2025
60AQI
60AQI
1st March 2025
50AQI
50AQI
2nd March 2025
69AQI
69AQI
3rd March 2025
42AQI
42AQI
4th March 2025
44AQI
44AQI
5th March 2025
27AQI
27AQI
6th March 2025
36AQI
36AQI
7th March 2025
32AQI
32AQI
8th March 2025
35AQI
35AQI
9th March 2025
34AQI
34AQI
10th March 2025
35AQI
35AQI
11th March 2025
41AQI
41AQI
12th March 2025
49AQI
49AQI
13th March 2025
45AQI
45AQI
14th March 2025
43AQI
43AQI
15th March 2025
35AQI
35AQI
16th March 2025
28AQI
28AQI
17th March 2025
22AQI
22AQI
18th March 2025
25AQI
25AQI
19th March 2025
20AQI
20AQI
20th March 2025
24AQI
24AQI
21st March 2025
42AQI
42AQI
22nd March 2025
49AQI
49AQI
23rd March 2025
59AQI
59AQI
24th March 2025
55AQI
55AQI
25th March 2025
65AQI
65AQI
26th March 2025
83AQI
83AQI
27th March 2025
68AQI
68AQI
28th March 2025
49AQI
49AQI
29th March 2025
37AQI
37AQI
30th March 2025
43AQI
43AQI
31st March 2025
31AQI
31AQI
1st April 2025
30AQI
30AQI
2nd April 2025
21AQI
21AQI
3rd April 2025
21AQI
21AQI
4th April 2025
22AQI
22AQI
5th April 2025
22AQI
22AQI
6th April 2025
21AQI
21AQI
7th April 2025
29AQI
29AQI
8th April 2025
35AQI
35AQI
9th April 2025
26AQI
26AQI
10th April 2025
45AQI
45AQI
11th April 2025
38AQI
38AQI
12th April 2025
36AQI
36AQI
13th April 2025
26AQI
26AQI
14th April 2025
39AQI
39AQI
15th April 2025
29AQI
29AQI
16th April 2025
33AQI
33AQI
17th April 2025
45AQI
45AQI
18th April 2025
49AQI
49AQI
19th April 2025
61AQI
61AQI
20th April 2025
45AQI
45AQI
21st April 2025
44AQI
44AQI
22nd April 2025
39AQI
39AQI
23rd April 2025
28AQI
28AQI
24th April 2025
36AQI
36AQI
25th April 2025
36AQI
36AQI
26th April 2025
43AQI
43AQI
27th April 2025
45AQI
45AQI
28th April 2025
38AQI
38AQI
29th April 2025
38AQI
38AQI
30th April 2025
45AQI
45AQI
1st May 2025
41AQI
41AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
33AQI
33AQI
4th May 2025
38AQI
38AQI
5th May 2025
36AQI
36AQI
6th May 2025
28AQI
28AQI
7th May 2025
25AQI
25AQI
8th May 2025
25AQI
25AQI
9th May 2025
28AQI
28AQI
10th May 2025
21AQI
21AQI
11th May 2025
30AQI
30AQI
12th May 2025
32AQI
32AQI
13th May 2025
35AQI
35AQI
14th May 2025
31AQI
31AQI
15th May 2025
38AQI
38AQI
16th May 2025
38AQI
38AQI
17th May 2025
27AQI
27AQI
18th May 2025
41AQI
41AQI
19th May 2025
42AQI
42AQI
20th May 2025
59AQI
59AQI
21st May 2025
37AQI
37AQI
22nd May 2025
39AQI
39AQI
23rd May 2025
40AQI
40AQI
24th May 2025
37AQI
37AQI
25th May 2025
31AQI
31AQI
26th May 2025
29AQI
29AQI
27th May 2025
26AQI
26AQI
28th May 2025
26AQI
26AQI
29th May 2025
26AQI
26AQI
30th May 2025
26AQI
26AQI
31st May 2025
17AQI
17AQI
1st June 2025
19AQI
19AQI
2nd June 2025
26AQI
26AQI
3rd June 2025
29AQI
29AQI
4th June 2025
34AQI
34AQI
5th June 2025
40AQI
40AQI
6th June 2025
44AQI
44AQI
7th June 2025
46AQI
46AQI
8th June 2025
53AQI
53AQI
9th June 2025
38AQI
38AQI
10th June 2025
27AQI
27AQI
11th June 2025
25AQI
25AQI
12th June 2025
32AQI
32AQI
13th June 2025
31AQI
31AQI
14th June 2025
30AQI
30AQI
15th June 2025
31AQI
31AQI
16th June 2025
37AQI
37AQI
17th June 2025
47AQI
47AQI
18th June 2025
44AQI
44AQI
19th June 2025
41AQI
41AQI
20th June 2025
35AQI
35AQI
21st June 2025
31AQI
31AQI
22nd June 2025
23AQI
23AQI
23rd June 2025
24AQI
24AQI
24th June 2025
21AQI
21AQI
25th June 2025
21AQI
21AQI
26th June 2025
21AQI
21AQI
27th June 2025
31AQI
31AQI
28th June 2025
29AQI
29AQI
29th June 2025
30AQI
30AQI
30th June 2025
34AQI
34AQI
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
58AQI
58AQI
11th July 2025
54AQI
54AQI
12th July 2025
57AQI
57AQI
13th July 2025
52AQI
52AQI
14th July 2025
47AQI
47AQI
15th July 2025
44AQI
44AQI
16th July 2025
43AQI
43AQI
17th July 2025
43AQI
43AQI
18th July 2025
41AQI
41AQI
19th July 2025
35AQI
35AQI
20th July 2025
31AQI
31AQI
21st July 2025
33AQI
33AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
30AQI
30AQI
24th July 2025
34AQI
34AQI
25th July 2025
27AQI
27AQI
26th July 2025
26AQI
26AQI
27th July 2025
24AQI
24AQI
28th July 2025
31AQI
31AQI
29th July 2025
27AQI
27AQI
30th July 2025
29AQI
29AQI
31st July 2025
29AQI
29AQI
1st August 2025
33AQI
33AQI
2nd August 2025
39AQI
39AQI
3rd August 2025
42AQI
42AQI
4th August 2025
54AQI
54AQI
37AQI
35AQI
42AQI
36AQI
33AQI
32AQI
42AQI
42AQI
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
23
8
3
1
194
22
Highest AQI recorded in
March42AQI
Lowest AQI recorded in
June32AQI
202438AQI
27
4
28
1
25
6
21
9
27
4
27
3
13
18
29
2
26
4
31
27
3
30
1
311
55
Highest AQI recorded in
July52AQI
Lowest AQI recorded in
October31AQI
202340AQI
25
6
25
3
25
6
23
7
27
4
19
11
22
9
31
29
1
27
4
20
9
18
13
291
73
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August26AQI
202250AQI
30
1
19
2
17
6
1
1
1
5
13
4
23
8
20
10
12
9
1
18
10
24
7
19
11
26
5
222
73
1
1
1
5
Highest AQI recorded in
March103AQI
Lowest AQI recorded in
August17AQI
202139AQI
25
6
25
3
28
3
28
2
21
10
27
3
26
5
25
6
28
2
30
1
25
5
25
6
313
52
Highest AQI recorded in
May44AQI
Lowest AQI recorded in
April35AQI
202035AQI
12
1
21
17
1
23
7
30
1
23
8
19
30
1
21
9
26
5
222
33
Highest AQI recorded in
August41AQI
Lowest AQI recorded in
April28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
50AQILeast Polluted Year Recorded
2020(Avg.)
35AQITsuiheiji's annual 2025 AQI (37) shows an average percentage change of -8.07% (improved AQI) compared to previous years: 2020 (35), 2021 (39), 2022 (50), 2023 (40), 2024 (38).
