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
Ichihara, Chiba, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Aug 2022
156AQILowest AQI recorded on
21st Aug 2023
15AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 44 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Ichihara, Chiba, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
2PM4th Aug
95AQI
Avg. Lowest Time
4AM4th Aug
41AQI
Night time
Avg. Highest Time
7PM4th Aug
76AQI
Avg. Lowest Time
3AM5th Aug
40AQI
In the last 24 hours,
Ichihara's AQI reached its highest point of 95 at 2 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
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 2025374 AMAQI
6th Jul 2025415 AMAQI
6th Jul 2025416 AMAQI
6th Jul 2025427 AMAQI
6th Jul 2025418 AMAQI
6th Jul 2025709 AMAQI
6th Jul 20259510 AMAQI
6th Jul 202510711 AMAQI
6th Jul 20259712 PMAQI
6th Jul 2025851 PMAQI
6th Jul 2025872 PMAQI
6th Jul 2025853 PMAQI
6th Jul 2025924 PMAQI
6th Jul 2025925 PMAQI
6th Jul 2025946 PMAQI
6th Jul 20251017 PMAQI
6th Jul 2025888 PMAQI
6th Jul 2025669 PMAQI
6th Jul 20256510 PMAQI
6th Jul 20256411 PMAQI
7th Jul 20256412 AMAQI
7th Jul 2025491 AMAQI
7th Jul 2025442 AMAQI
7th Jul 2025433 AMAQI
28°C25/32°C
7th Jul 2025474 AMAQI
7th Jul 2025535 AMAQI
7th Jul 2025526 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025528 AMAQI
7th Jul 2025919 AMAQI
7th Jul 202511310 AMAQI
7th Jul 202512011 AMAQI
7th Jul 202511812 PMAQI
7th Jul 2025951 PMAQI
7th Jul 2025902 PMAQI
7th Jul 2025853 PMAQI
7th Jul 2025844 PMAQI
7th Jul 2025865 PMAQI
7th Jul 2025936 PMAQI
7th Jul 2025987 PMAQI
7th Jul 2025928 PMAQI
7th Jul 2025739 PMAQI
7th Jul 20257210 PMAQI
7th Jul 20257111 PMAQI
8th Jul 20256712 AMAQI
8th Jul 2025581 AMAQI
8th Jul 2025552 AMAQI
8th Jul 2025553 AMAQI
28°C25/32°C
8th Jul 2025564 AMAQI
8th Jul 2025625 AMAQI
8th Jul 2025626 AMAQI
8th Jul 2025627 AMAQI
8th Jul 2025628 AMAQI
8th Jul 2025909 AMAQI
8th Jul 20259810 AMAQI
8th Jul 20259411 AMAQI
8th Jul 20259512 PMAQI
8th Jul 2025881 PMAQI
8th Jul 2025842 PMAQI
8th Jul 2025823 PMAQI
8th Jul 2025814 PMAQI
8th Jul 2025785 PMAQI
8th Jul 2025816 PMAQI
8th Jul 2025857 PMAQI
8th Jul 2025828 PMAQI
8th Jul 2025759 PMAQI
8th Jul 20257610 PMAQI
8th Jul 20257711 PMAQI
9th Jul 20257512 AMAQI
9th Jul 2025641 AMAQI
9th Jul 2025622 AMAQI
9th Jul 2025613 AMAQI
28°C25/31°C
9th Jul 2025634 AMAQI
9th Jul 2025675 AMAQI
9th Jul 2025676 AMAQI
9th Jul 2025677 AMAQI
9th Jul 2025678 AMAQI
9th Jul 2025799 AMAQI
9th Jul 20259010 AMAQI
9th Jul 20259611 AMAQI
9th Jul 20259812 PMAQI
9th Jul 20251001 PMAQI
9th Jul 20251072 PMAQI
9th Jul 20251103 PMAQI
9th Jul 2025834 PMAQI
9th Jul 2025615 PMAQI
9th Jul 2025576 PMAQI
9th Jul 2025527 PMAQI
9th Jul 2025518 PMAQI
9th Jul 2025599 PMAQI
9th Jul 20255910 PMAQI
9th Jul 20255911 PMAQI
10th Jul 20255912 AMAQI
10th Jul 2025651 AMAQI
10th Jul 2025682 AMAQI
10th Jul 2025673 AMAQI
28°C25/31°C
10th Jul 2025694 AMAQI
10th Jul 2025735 AMAQI
10th Jul 2025736 AMAQI
10th Jul 2025737 AMAQI
10th Jul 2025738 AMAQI
10th Jul 2025369 AMAQI
10th Jul 20252910 AMAQI
10th Jul 20253511 AMAQI
10th Jul 20253412 PMAQI
10th Jul 2025411 PMAQI
10th Jul 2025402 PMAQI
10th Jul 2025463 PMAQI
10th Jul 2025414 PMAQI
10th Jul 2025395 PMAQI
10th Jul 2025336 PMAQI
10th Jul 2025367 PMAQI
10th Jul 2025588 PMAQI
10th Jul 2025619 PMAQI
10th Jul 20255910 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025651 AMAQI
11th Jul 2025682 AMAQI
11th Jul 2025683 AMAQI
27°C23/30°C
11th Jul 2025674 AMAQI
11th Jul 2025635 AMAQI
11th Jul 2025636 AMAQI
11th Jul 2025637 AMAQI
11th Jul 2025638 AMAQI
11th Jul 2025309 AMAQI
11th Jul 20251710 AMAQI
11th Jul 20251811 AMAQI
11th Jul 20252312 PMAQI
11th Jul 2025351 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025343 PMAQI
11th Jul 2025344 PMAQI
11th Jul 2025365 PMAQI
11th Jul 2025376 PMAQI
11th Jul 2025387 PMAQI
11th Jul 2025448 PMAQI
11th Jul 2025579 PMAQI
11th Jul 20255710 PMAQI
11th Jul 20255811 PMAQI
12th Jul 20255812 AMAQI
12th Jul 2025631 AMAQI
12th Jul 2025642 AMAQI
12th Jul 2025643 AMAQI
23°C22/25°C
12th Jul 2025624 AMAQI
12th Jul 2025605 AMAQI
12th Jul 2025596 AMAQI
12th Jul 2025607 AMAQI
12th Jul 2025598 AMAQI
12th Jul 2025449 AMAQI
12th Jul 20254310 AMAQI
12th Jul 20254811 AMAQI
12th Jul 20254912 PMAQI
12th Jul 2025491 PMAQI
12th Jul 2025512 PMAQI
12th Jul 2025513 PMAQI
12th Jul 2025514 PMAQI
12th Jul 2025485 PMAQI
12th Jul 2025456 PMAQI
12th Jul 2025437 PMAQI
12th Jul 2025458 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025591 AMAQI
13th Jul 2025612 AMAQI
13th Jul 2025613 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 2025479 AMAQI
13th Jul 20253910 AMAQI
13th Jul 20254111 AMAQI
13th Jul 20253712 PMAQI
13th Jul 2025411 PMAQI
13th Jul 2025402 PMAQI
13th Jul 2025423 PMAQI
13th Jul 2025404 PMAQI
13th Jul 2025365 PMAQI
13th Jul 2025346 PMAQI
13th Jul 2025307 PMAQI
13th Jul 2025358 PMAQI
13th Jul 2025509 PMAQI
13th Jul 20255010 PMAQI
13th Jul 20255011 PMAQI
14th Jul 20254912 AMAQI
14th Jul 2025531 AMAQI
14th Jul 2025582 AMAQI
14th Jul 2025583 AMAQI
26°C23/28°C
14th Jul 2025584 AMAQI
14th Jul 2025565 AMAQI
14th Jul 2025576 AMAQI
14th Jul 2025567 AMAQI
14th Jul 2025578 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20251912 PMAQI
14th Jul 2025261 PMAQI
14th Jul 2025292 PMAQI
14th Jul 2025293 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025285 PMAQI
14th Jul 2025296 PMAQI
14th Jul 2025297 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025479 PMAQI
14th Jul 20254710 PMAQI
14th Jul 20254711 PMAQI
15th Jul 20254712 AMAQI
15th Jul 2025511 AMAQI
15th Jul 2025562 AMAQI
15th Jul 2025553 AMAQI
25°C24/28°C
15th Jul 2025554 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025536 AMAQI
15th Jul 2025537 AMAQI
15th Jul 2025538 AMAQI
15th Jul 2025269 AMAQI
15th Jul 20251610 AMAQI
15th Jul 20251711 AMAQI
15th Jul 20251812 PMAQI
15th Jul 2025251 PMAQI
15th Jul 2025272 PMAQI
15th Jul 2025323 PMAQI
15th Jul 2025314 PMAQI
15th Jul 2025305 PMAQI
15th Jul 2025346 PMAQI
15th Jul 2025297 PMAQI
15th Jul 2025268 PMAQI
15th Jul 2025429 PMAQI
15th Jul 20254310 PMAQI
15th Jul 20254411 PMAQI
16th Jul 20254912 AMAQI
16th Jul 2025531 AMAQI
16th Jul 2025532 AMAQI
16th Jul 2025533 AMAQI
26°C25/28°C
16th Jul 2025524 AMAQI
16th Jul 2025505 AMAQI
16th Jul 2025506 AMAQI
16th Jul 2025507 AMAQI
16th Jul 2025508 AMAQI
16th Jul 2025389 AMAQI
16th Jul 20252810 AMAQI
16th Jul 20252211 AMAQI
16th Jul 20251912 PMAQI
16th Jul 2025271 PMAQI
16th Jul 2025282 PMAQI
16th Jul 2025313 PMAQI
16th Jul 2025274 PMAQI
16th Jul 2025275 PMAQI
16th Jul 2025296 PMAQI
16th Jul 2025277 PMAQI
16th Jul 2025278 PMAQI
16th Jul 2025409 PMAQI
16th Jul 20254010 PMAQI
16th Jul 20254311 PMAQI
17th Jul 20254312 AMAQI
17th Jul 2025511 AMAQI
17th Jul 2025522 AMAQI
17th Jul 2025523 AMAQI
26°C25/27°C
17th Jul 2025514 AMAQI
17th Jul 2025495 AMAQI
17th Jul 2025496 AMAQI
17th Jul 2025497 AMAQI
17th Jul 2025498 AMAQI
17th Jul 2025319 AMAQI
17th Jul 20252710 AMAQI
17th Jul 20252911 AMAQI
17th Jul 20252612 PMAQI
17th Jul 2025341 PMAQI
17th Jul 2025342 PMAQI
17th Jul 2025353 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025296 PMAQI
17th Jul 2025277 PMAQI
17th Jul 2025338 PMAQI
17th Jul 2025449 PMAQI
17th Jul 20254510 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254212 AMAQI
18th Jul 2025491 AMAQI
18th Jul 2025502 AMAQI
18th Jul 2025503 AMAQI
27°C25/29°C
18th Jul 2025494 AMAQI
18th Jul 2025475 AMAQI
18th Jul 2025476 AMAQI
18th Jul 2025477 AMAQI
18th Jul 2025478 AMAQI
18th Jul 2025299 AMAQI
18th Jul 20252510 AMAQI
18th Jul 20252211 AMAQI
18th Jul 20252212 PMAQI
18th Jul 2025291 PMAQI
18th Jul 2025292 PMAQI
18th Jul 2025293 PMAQI
18th Jul 2025284 PMAQI
18th Jul 2025275 PMAQI
18th Jul 2025276 PMAQI
18th Jul 2025237 PMAQI
18th Jul 2025318 PMAQI
18th Jul 2025399 PMAQI
18th Jul 20253910 PMAQI
18th Jul 20253911 PMAQI
19th Jul 20253912 AMAQI
19th Jul 2025441 AMAQI
19th Jul 2025472 AMAQI
19th Jul 2025473 AMAQI
27°C25/29°C
19th Jul 2025464 AMAQI
19th Jul 2025445 AMAQI
19th Jul 2025446 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025299 AMAQI
19th Jul 20252510 AMAQI
19th Jul 20252411 AMAQI
19th Jul 20252412 PMAQI
19th Jul 2025251 PMAQI
19th Jul 2025262 PMAQI
19th Jul 2025263 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025216 PMAQI
19th Jul 2025197 PMAQI
19th Jul 2025268 PMAQI
19th Jul 2025349 PMAQI
19th Jul 20253310 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025431 AMAQI
20th Jul 2025452 AMAQI
20th Jul 2025453 AMAQI
27°C24/29°C
20th Jul 2025434 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025416 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025418 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20252310 AMAQI
20th Jul 20252111 AMAQI
20th Jul 20252012 PMAQI
20th Jul 2025211 PMAQI
20th Jul 2025202 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025194 PMAQI
20th Jul 2025205 PMAQI
20th Jul 2025226 PMAQI
20th Jul 2025227 PMAQI
20th Jul 2025268 PMAQI
20th Jul 2025319 PMAQI
20th Jul 20253310 PMAQI
20th Jul 20253311 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025413 AMAQI
27°C25/30°C
21st Jul 2025404 AMAQI
21st Jul 2025385 AMAQI
21st Jul 2025376 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025279 AMAQI
21st Jul 20252410 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20252612 PMAQI
21st Jul 2025281 PMAQI
21st Jul 2025312 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025274 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025306 PMAQI
21st Jul 2025267 PMAQI
21st Jul 2025258 PMAQI
21st Jul 2025299 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253011 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025361 AMAQI
22nd Jul 2025392 AMAQI
22nd Jul 2025383 AMAQI
28°C26/31°C
22nd Jul 2025384 AMAQI
22nd Jul 2025365 AMAQI
22nd Jul 2025366 AMAQI
22nd Jul 2025377 AMAQI
22nd Jul 2025378 AMAQI
22nd Jul 2025269 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252611 AMAQI
22nd Jul 20253012 PMAQI
22nd Jul 2025351 PMAQI
22nd Jul 2025342 PMAQI
22nd Jul 2025333 PMAQI
22nd Jul 2025324 PMAQI
22nd Jul 2025295 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025187 PMAQI
22nd Jul 2025218 PMAQI
22nd Jul 2025279 PMAQI
22nd Jul 20252810 PMAQI
22nd Jul 20252711 PMAQI
23rd Jul 20252812 AMAQI
23rd Jul 2025311 AMAQI
23rd Jul 2025362 AMAQI
23rd Jul 2025363 AMAQI
28°C26/31°C
23rd Jul 2025364 AMAQI
23rd Jul 2025355 AMAQI
23rd Jul 2025356 AMAQI
23rd Jul 2025357 AMAQI
23rd Jul 2025358 AMAQI
23rd Jul 2025269 AMAQI
23rd Jul 20252310 AMAQI
23rd Jul 20252811 AMAQI
23rd Jul 20253212 PMAQI
23rd Jul 2025311 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025333 PMAQI
23rd Jul 2025304 PMAQI
23rd Jul 2025315 PMAQI
23rd Jul 2025296 PMAQI
23rd Jul 2025207 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025289 PMAQI
23rd Jul 20252710 PMAQI
23rd Jul 20252811 PMAQI
24th Jul 20252912 AMAQI
24th Jul 2025331 AMAQI
24th Jul 2025342 AMAQI
24th Jul 2025343 AMAQI
28°C26/31°C
24th Jul 2025344 AMAQI
24th Jul 2025345 AMAQI
24th Jul 2025336 AMAQI
24th Jul 2025347 AMAQI
24th Jul 2025338 AMAQI
24th Jul 2025379 AMAQI
24th Jul 20254510 AMAQI
24th Jul 20255111 AMAQI
24th Jul 20255712 PMAQI
24th Jul 2025571 PMAQI
24th Jul 2025522 PMAQI
24th Jul 2025433 PMAQI
24th Jul 2025314 PMAQI
24th Jul 2025255 PMAQI
24th Jul 2025216 PMAQI
24th Jul 2025187 PMAQI
24th Jul 2025218 PMAQI
24th Jul 2025249 PMAQI
24th Jul 20252610 PMAQI
24th Jul 20252711 PMAQI
25th Jul 20252812 AMAQI
25th Jul 2025311 AMAQI
25th Jul 2025332 AMAQI
25th Jul 2025333 AMAQI
28°C25/32°C
25th Jul 2025344 AMAQI
25th Jul 2025375 AMAQI
25th Jul 2025376 AMAQI
25th Jul 2025377 AMAQI
25th Jul 2025378 AMAQI
25th Jul 2025279 AMAQI
25th Jul 20252810 AMAQI
25th Jul 20252711 AMAQI
25th Jul 20252812 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025232 PMAQI
25th Jul 2025203 PMAQI
25th Jul 2025224 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025176 PMAQI
25th Jul 2025167 PMAQI
25th Jul 2025208 PMAQI
25th Jul 2025269 PMAQI
25th Jul 20252710 PMAQI
25th Jul 20252611 PMAQI
26th Jul 20252612 AMAQI
26th Jul 2025321 AMAQI
26th Jul 2025342 AMAQI
26th Jul 2025333 AMAQI
28°C26/31°C
26th Jul 2025334 AMAQI
26th Jul 2025335 AMAQI
26th Jul 2025336 AMAQI
26th Jul 2025337 AMAQI
26th Jul 2025328 AMAQI
26th Jul 2025249 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252511 AMAQI
26th Jul 20252612 PMAQI
26th Jul 2025221 PMAQI
26th Jul 2025212 PMAQI
26th Jul 2025223 PMAQI
26th Jul 2025204 PMAQI
26th Jul 2025205 PMAQI
26th Jul 2025196 PMAQI
26th Jul 2025187 PMAQI
26th Jul 2025218 PMAQI
26th Jul 2025269 PMAQI
26th Jul 20252710 PMAQI
26th Jul 20252611 PMAQI
27th Jul 20252512 AMAQI
27th Jul 2025301 AMAQI
27th Jul 2025322 AMAQI
27th Jul 2025323 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 2025259 AMAQI
27th Jul 20252010 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20251812 PMAQI
27th Jul 2025211 PMAQI
27th Jul 2025212 PMAQI
27th Jul 2025213 PMAQI
27th Jul 2025214 PMAQI
27th Jul 2025205 PMAQI
27th Jul 2025176 PMAQI
27th Jul 2025167 PMAQI
27th Jul 2025208 PMAQI
27th Jul 2025259 PMAQI
27th Jul 20252510 PMAQI
27th Jul 20252411 PMAQI
28th Jul 20252412 AMAQI
28th Jul 2025271 AMAQI
28th Jul 2025302 AMAQI
28th Jul 2025303 AMAQI
28°C26/31°C
28th Jul 2025304 AMAQI
28th Jul 2025295 AMAQI
28th Jul 2025296 AMAQI
28th Jul 2025297 AMAQI
28th Jul 2025298 AMAQI
28th Jul 2025289 AMAQI
28th Jul 20253110 AMAQI
28th Jul 20253211 AMAQI
28th Jul 20254312 PMAQI
28th Jul 2025531 PMAQI
28th Jul 2025502 PMAQI
28th Jul 2025453 PMAQI
28th Jul 2025384 PMAQI
28th Jul 2025295 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025207 PMAQI
28th Jul 2025258 PMAQI
28th Jul 2025269 PMAQI
28th Jul 20252310 PMAQI
28th Jul 20252411 PMAQI
29th Jul 20252412 AMAQI
29th Jul 2025271 AMAQI
29th Jul 2025292 AMAQI
29th Jul 2025293 AMAQI
28°C26/31°C
29th Jul 2025304 AMAQI
29th Jul 2025325 AMAQI
29th Jul 2025316 AMAQI
29th Jul 2025317 AMAQI
29th Jul 2025318 AMAQI
29th Jul 2025319 AMAQI
29th Jul 20253010 AMAQI
29th Jul 20253111 AMAQI
29th Jul 20253412 PMAQI
29th Jul 2025341 PMAQI
29th Jul 2025312 PMAQI
29th Jul 2025253 PMAQI
29th Jul 2025234 PMAQI
29th Jul 2025215 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025198 PMAQI
29th Jul 2025239 PMAQI
29th Jul 20252310 PMAQI
29th Jul 20252311 PMAQI
30th Jul 20252612 AMAQI
30th Jul 2025291 AMAQI
30th Jul 2025292 AMAQI
30th Jul 2025293 AMAQI
28°C25/33°C
30th Jul 2025304 AMAQI
30th Jul 2025305 AMAQI
30th Jul 2025306 AMAQI
30th Jul 2025307 AMAQI
30th Jul 2025308 AMAQI
30th Jul 2025239 AMAQI
30th Jul 20252010 AMAQI
30th Jul 20252111 AMAQI
30th Jul 20252212 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025232 PMAQI
30th Jul 2025253 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025315 PMAQI
30th Jul 2025296 PMAQI
30th Jul 2025317 PMAQI
30th Jul 2025338 PMAQI
30th Jul 2025329 PMAQI
30th Jul 20253410 PMAQI
30th Jul 20253211 PMAQI
31st Jul 20253312 AMAQI
31st Jul 2025301 AMAQI
31st Jul 2025292 AMAQI
31st Jul 2025293 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 20253211 AMAQI
31st Jul 20253112 PMAQI
31st Jul 2025291 PMAQI
31st Jul 2025292 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025264 PMAQI
31st Jul 2025255 PMAQI
31st Jul 2025276 PMAQI
31st Jul 2025297 PMAQI
31st Jul 2025298 PMAQI
31st Jul 2025299 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025311 AMAQI
1st Aug 2025352 AMAQI
1st Aug 2025363 AMAQI
27°C24/31°C
1st Aug 2025354 AMAQI
1st Aug 2025355 AMAQI
1st Aug 2025376 AMAQI
1st Aug 2025367 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025349 AMAQI
1st Aug 20252910 AMAQI
1st Aug 20254011 AMAQI
1st Aug 20254212 PMAQI
1st Aug 2025351 PMAQI
1st Aug 2025352 PMAQI
1st Aug 2025313 PMAQI
1st Aug 2025434 PMAQI
1st Aug 2025335 PMAQI
1st Aug 2025426 PMAQI
1st Aug 2025247 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025289 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252711 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025311 AMAQI
2nd Aug 2025362 AMAQI
2nd Aug 2025373 AMAQI
27°C25/30°C
2nd Aug 2025374 AMAQI
2nd Aug 2025385 AMAQI
2nd Aug 2025396 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025388 AMAQI
2nd Aug 2025329 AMAQI
2nd Aug 20253410 AMAQI
2nd Aug 20254011 AMAQI
2nd Aug 20254012 PMAQI
2nd Aug 2025461 PMAQI
2nd Aug 2025562 PMAQI
2nd Aug 2025563 PMAQI
2nd Aug 2025534 PMAQI
2nd Aug 2025525 PMAQI
2nd Aug 2025566 PMAQI
2nd Aug 2025537 PMAQI
2nd Aug 2025388 PMAQI
2nd Aug 2025369 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253911 PMAQI
3rd Aug 20253412 AMAQI
3rd Aug 2025361 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
28°C25/33°C
3rd Aug 2025404 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025396 AMAQI
3rd Aug 2025407 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025449 AMAQI
3rd Aug 20255110 AMAQI
3rd Aug 20254911 AMAQI
3rd Aug 20256112 PMAQI
3rd Aug 2025511 PMAQI
3rd Aug 2025572 PMAQI
3rd Aug 2025483 PMAQI
3rd Aug 2025494 PMAQI
3rd Aug 2025485 PMAQI
3rd Aug 2025506 PMAQI
3rd Aug 2025447 PMAQI
3rd Aug 2025468 PMAQI
3rd Aug 2025419 PMAQI
3rd Aug 20254410 PMAQI
3rd Aug 20254111 PMAQI
4th Aug 20254012 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025393 AMAQI
29°C26/33°C
4th Aug 2025414 AMAQI
4th Aug 2025435 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025437 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025619 AMAQI
4th Aug 20257410 AMAQI
4th Aug 20258211 AMAQI
4th Aug 20258312 PMAQI
4th Aug 2025901 PMAQI
4th Aug 2025952 PMAQI
4th Aug 2025873 PMAQI
4th Aug 2025884 PMAQI
4th Aug 2025935 PMAQI
4th Aug 2025856 PMAQI
4th Aug 2025767 PMAQI
4th Aug 2025708 PMAQI
4th Aug 2025589 PMAQI
4th Aug 20255510 PMAQI
4th Aug 20254811 PMAQI
5th Aug 20254812 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025412 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 2025559 AMAQI
5th Aug 20256010 AMAQI
5th Aug 20256011 AMAQI
11 AM6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
45AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
5 PM - 6 PM
39AQI
2 hours / Day
60 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 5 PM to 6 PM (Avg. 39).
Night time
Avg. Highest Time
12 AM - 3 AM
43AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM
36AQI
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. 36).
2025 Days Vs Air Quality
Ichihara, Chiba, Japan
2025
91%
196
9%
19
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
196 DaysModerate
19 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% 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
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
29AQI
29AQI
5th January 2025
34AQI
34AQI
6th January 2025
55AQI
55AQI
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
36AQI
36AQI
13th January 2025
28AQI
28AQI
14th January 2025
41AQI
41AQI
15th January 2025
36AQI
36AQI
16th January 2025
33AQI
33AQI
17th January 2025
30AQI
30AQI
18th January 2025
32AQI
32AQI
19th January 2025
56AQI
56AQI
20th January 2025
42AQI
42AQI
21st January 2025
44AQI
44AQI
22nd January 2025
39AQI
39AQI
23rd January 2025
55AQI
55AQI
24th January 2025
47AQI
47AQI
25th January 2025
43AQI
43AQI
26th January 2025
38AQI
38AQI
27th January 2025
37AQI
37AQI
28th January 2025
39AQI
39AQI
29th January 2025
32AQI
32AQI
30th January 2025
34AQI
34AQI
31st January 2025
29AQI
29AQI
1st February 2025
40AQI
40AQI
2nd February 2025
32AQI
32AQI
3rd February 2025
45AQI
45AQI
4th February 2025
31AQI
31AQI
5th February 2025
35AQI
35AQI
6th February 2025
30AQI
30AQI
7th February 2025
30AQI
30AQI
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
32AQI
32AQI
14th February 2025
30AQI
30AQI
15th February 2025
30AQI
30AQI
16th February 2025
39AQI
39AQI
17th February 2025
36AQI
36AQI
18th February 2025
32AQI
32AQI
19th February 2025
31AQI
31AQI
20th February 2025
30AQI
30AQI
21st February 2025
30AQI
30AQI
22nd February 2025
32AQI
32AQI
23rd February 2025
32AQI
32AQI
24th February 2025
33AQI
33AQI
25th February 2025
34AQI
34AQI
26th February 2025
35AQI
35AQI
27th February 2025
39AQI
39AQI
28th February 2025
59AQI
59AQI
1st March 2025
50AQI
50AQI
2nd March 2025
67AQI
67AQI
3rd March 2025
41AQI
41AQI
4th March 2025
42AQI
42AQI
5th March 2025
26AQI
26AQI
6th March 2025
34AQI
34AQI
7th March 2025
31AQI
31AQI
8th March 2025
34AQI
34AQI
9th March 2025
33AQI
33AQI
10th March 2025
35AQI
35AQI
11th March 2025
40AQI
40AQI
12th March 2025
47AQI
47AQI
13th March 2025
43AQI
43AQI
14th March 2025
41AQI
41AQI
15th March 2025
34AQI
34AQI
16th March 2025
27AQI
27AQI
17th March 2025
22AQI
22AQI
18th March 2025
24AQI
24AQI
19th March 2025
19AQI
19AQI
20th March 2025
23AQI
23AQI
21st March 2025
42AQI
42AQI
22nd March 2025
48AQI
48AQI
23rd March 2025
57AQI
57AQI
24th March 2025
53AQI
53AQI
25th March 2025
66AQI
66AQI
26th March 2025
82AQI
82AQI
27th March 2025
68AQI
68AQI
28th March 2025
49AQI
49AQI
29th March 2025
37AQI
37AQI
30th March 2025
43AQI
43AQI
31st March 2025
32AQI
32AQI
1st April 2025
30AQI
30AQI
2nd April 2025
22AQI
22AQI
3rd April 2025
21AQI
21AQI
4th April 2025
21AQI
21AQI
5th April 2025
22AQI
22AQI
6th April 2025
22AQI
22AQI
7th April 2025
30AQI
30AQI
8th April 2025
35AQI
35AQI
9th April 2025
25AQI
25AQI
10th April 2025
45AQI
45AQI
11th April 2025
39AQI
39AQI
12th April 2025
36AQI
36AQI
13th April 2025
27AQI
27AQI
14th April 2025
39AQI
39AQI
15th April 2025
30AQI
30AQI
16th April 2025
33AQI
33AQI
17th April 2025
45AQI
45AQI
18th April 2025
49AQI
49AQI
19th April 2025
61AQI
61AQI
20th April 2025
44AQI
44AQI
21st April 2025
43AQI
43AQI
22nd April 2025
40AQI
40AQI
23rd April 2025
28AQI
28AQI
24th April 2025
35AQI
35AQI
25th April 2025
35AQI
35AQI
26th April 2025
41AQI
41AQI
27th April 2025
44AQI
44AQI
28th April 2025
37AQI
37AQI
29th April 2025
37AQI
37AQI
30th April 2025
43AQI
43AQI
1st May 2025
40AQI
40AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
32AQI
32AQI
4th May 2025
37AQI
37AQI
5th May 2025
33AQI
33AQI
6th May 2025
27AQI
27AQI
7th May 2025
24AQI
24AQI
8th May 2025
25AQI
25AQI
9th May 2025
27AQI
27AQI
10th May 2025
21AQI
21AQI
11th May 2025
29AQI
29AQI
12th May 2025
32AQI
32AQI
13th May 2025
34AQI
34AQI
14th May 2025
30AQI
30AQI
15th May 2025
36AQI
36AQI
16th May 2025
37AQI
37AQI
17th May 2025
25AQI
25AQI
18th May 2025
41AQI
41AQI
19th May 2025
41AQI
41AQI
20th May 2025
58AQI
58AQI
21st May 2025
38AQI
38AQI
22nd May 2025
39AQI
39AQI
23rd May 2025
38AQI
38AQI
24th May 2025
36AQI
36AQI
25th May 2025
30AQI
30AQI
26th May 2025
27AQI
27AQI
27th May 2025
25AQI
25AQI
28th May 2025
24AQI
24AQI
29th May 2025
25AQI
25AQI
30th May 2025
24AQI
24AQI
31st May 2025
17AQI
17AQI
1st June 2025
19AQI
19AQI
2nd June 2025
25AQI
25AQI
3rd June 2025
28AQI
28AQI
4th June 2025
33AQI
33AQI
5th June 2025
39AQI
39AQI
6th June 2025
43AQI
43AQI
7th June 2025
46AQI
46AQI
8th June 2025
51AQI
51AQI
9th June 2025
37AQI
37AQI
10th June 2025
28AQI
28AQI
11th June 2025
27AQI
27AQI
12th June 2025
35AQI
35AQI
13th June 2025
32AQI
32AQI
14th June 2025
31AQI
31AQI
15th June 2025
34AQI
34AQI
16th June 2025
36AQI
36AQI
17th June 2025
46AQI
46AQI
18th June 2025
42AQI
42AQI
19th June 2025
39AQI
39AQI
20th June 2025
33AQI
33AQI
21st June 2025
29AQI
29AQI
22nd June 2025
22AQI
22AQI
23rd June 2025
23AQI
23AQI
24th June 2025
21AQI
21AQI
25th June 2025
20AQI
20AQI
26th June 2025
20AQI
20AQI
27th June 2025
33AQI
33AQI
28th June 2025
29AQI
29AQI
29th June 2025
31AQI
31AQI
30th June 2025
36AQI
36AQI
1st July 2025
35AQI
35AQI
2nd July 2025
40AQI
40AQI
3rd July 2025
39AQI
39AQI
4th July 2025
40AQI
40AQI
5th July 2025
49AQI
49AQI
6th July 2025
66AQI
66AQI
7th July 2025
74AQI
74AQI
8th July 2025
74AQI
74AQI
9th July 2025
71AQI
71AQI
10th July 2025
54AQI
54AQI
11th July 2025
49AQI
49AQI
12th July 2025
54AQI
54AQI
13th July 2025
48AQI
48AQI
14th July 2025
42AQI
42AQI
15th July 2025
40AQI
40AQI
16th July 2025
39AQI
39AQI
17th July 2025
40AQI
40AQI
18th July 2025
37AQI
37AQI
19th July 2025
34AQI
34AQI
20th July 2025
32AQI
32AQI
21st July 2025
32AQI
32AQI
22nd July 2025
31AQI
31AQI
23rd July 2025
30AQI
30AQI
24th July 2025
33AQI
33AQI
25th July 2025
27AQI
27AQI
26th July 2025
26AQI
26AQI
27th July 2025
25AQI
25AQI
28th July 2025
30AQI
30AQI
29th July 2025
27AQI
27AQI
30th July 2025
28AQI
28AQI
31st July 2025
29AQI
29AQI
1st August 2025
33AQI
33AQI
2nd August 2025
41AQI
41AQI
3rd August 2025
44AQI
44AQI
37AQI
34AQI
42AQI
35AQI
32AQI
32AQI
41AQI
39AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202536AQI
28
3
27
1
25
6
29
1
30
1
29
1
25
6
3
196
19
Highest AQI recorded in
March42AQI
Lowest AQI recorded in
May32AQI
202436AQI
30
1
28
1
25
6
25
5
27
4
28
2
18
13
30
1
28
2
31
27
3
30
1
327
39
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
September28AQI
202337AQI
25
6
25
3
28
3
25
5
28
3
24
6
28
3
31
29
1
30
1
23
6
23
8
319
45
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
August24AQI
202240AQI
28
3
21
1
18
13
23
7
27
4
25
5
19
2
1
1
28
1
28
3
25
5
29
2
272
46
1
Highest AQI recorded in
August89AQI
Lowest AQI recorded in
September35AQI
202138AQI
23
8
24
4
27
4
28
2
24
7
27
3
26
5
26
5
29
1
30
1
25
5
24
7
313
52
Highest AQI recorded in
May42AQI
Lowest AQI recorded in
April33AQI
202038AQI
12
1
20
1
17
1
22
8
28
3
20
10
1
18
1
30
1
21
9
26
5
214
40
1
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
September32AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
40AQILeast Polluted Year Recorded
2024(Avg.)
36AQIIchihara's annual 2025 AQI (36) shows an average percentage change of -4.1% (improved AQI) compared to previous years: 2020 (38), 2021 (38), 2022 (40), 2023 (37), 2024 (36).
