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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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+

June Air Quality Analysis

Ichihara, Chiba, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
26th Jun 2024
67AQI
Lowest AQI recorded on
3rd Jun 2026
17AQI

Same Day Analysis (3rd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 17 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 2nd Jun - 3rd Jun 2026

Ichihara, Chiba, Japan

AQI
Day
Night
.

4 AM2nd Jun 2026

6 PM

3 AM3rd Jun 2026

Day time
Avg. Highest Time
11AM2nd Jun

27AQI

Avg. Lowest Time
5AM2nd Jun

17AQI

Night time
Avg. Highest Time
11PM2nd Jun

18AQI

Avg. Lowest Time
3AM3rd Jun

13AQI

In the last 24 hours,

Ichihara's AQI reached its highest point of 27 at 11 AM during the Day, while the lowest point, 13, was recorded at 3 AM during the Night between 2nd Jun and 3rd Jun 2026.

Day & Night AQI Trend : May - Jun 2026

Ichihara, Chiba, Japan

MayJun
05th - 06th06th - 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
Day
Night
5th May 2026204 AMAQI
5th May 2026175 AMAQI
5th May 2026166 AMAQI
5th May 2026187 AMAQI
5th May 2026188 AMAQI
5th May 2026189 AMAQI
5th May 20262510 AMAQI
5th May 20262711 AMAQI
5th May 20262412 PMAQI
5th May 2026251 PMAQI
5th May 2026232 PMAQI
5th May 2026263 PMAQI
5th May 2026264 PMAQI
5th May 2026255 PMAQI
5th May 2026286 PMAQI
5th May 2026247 PMAQI
5th May 2026208 PMAQI
5th May 2026199 PMAQI
5th May 20262810 PMAQI
5th May 20262511 PMAQI
6th May 20262612 AMAQI
6th May 2026241 AMAQI
6th May 2026262 AMAQI
6th May 2026243 AMAQI

17°C14/20°C

6th May 2026344 AMAQI
6th May 2026245 AMAQI
6th May 2026286 AMAQI
6th May 2026467 AMAQI
6th May 2026298 AMAQI
6th May 2026489 AMAQI
6th May 20264410 AMAQI
6th May 20264711 AMAQI
6th May 20263812 PMAQI
6th May 2026181 PMAQI
6th May 2026202 PMAQI
6th May 2026213 PMAQI
6th May 2026234 PMAQI
6th May 2026245 PMAQI
6th May 2026246 PMAQI
6th May 2026227 PMAQI
6th May 2026228 PMAQI
6th May 2026289 PMAQI
6th May 20262010 PMAQI
6th May 20262011 PMAQI
7th May 20262712 AMAQI
7th May 2026281 AMAQI
7th May 2026332 AMAQI
7th May 2026393 AMAQI

17°C15/20°C

7th May 2026434 AMAQI
7th May 2026385 AMAQI
7th May 2026266 AMAQI
7th May 2026347 AMAQI
7th May 2026358 AMAQI
7th May 2026429 AMAQI
7th May 20264610 AMAQI
7th May 20263611 AMAQI
7th May 20262412 PMAQI
7th May 2026231 PMAQI
7th May 2026202 PMAQI
7th May 2026173 PMAQI
7th May 2026244 PMAQI
7th May 2026245 PMAQI
7th May 2026246 PMAQI
7th May 2026227 PMAQI
7th May 2026108 PMAQI
7th May 2026169 PMAQI
7th May 20261810 PMAQI
7th May 20262711 PMAQI
8th May 20261812 AMAQI
8th May 2026151 AMAQI
8th May 2026222 AMAQI
8th May 2026203 AMAQI

19°C17/22°C

8th May 2026204 AMAQI
8th May 2026285 AMAQI
8th May 2026236 AMAQI
8th May 2026227 AMAQI
8th May 2026198 AMAQI
8th May 2026289 AMAQI
8th May 20264010 AMAQI
8th May 20262811 AMAQI
8th May 20262412 PMAQI
8th May 2026161 PMAQI
8th May 2026162 PMAQI
8th May 2026173 PMAQI
8th May 2026204 PMAQI
8th May 2026185 PMAQI
8th May 2026206 PMAQI
8th May 2026257 PMAQI
8th May 2026398 PMAQI
8th May 2026249 PMAQI
8th May 20263810 PMAQI
8th May 20264811 PMAQI
9th May 20264512 AMAQI
9th May 2026461 AMAQI
9th May 2026502 AMAQI
9th May 2026383 AMAQI

20°C18/23°C

9th May 2026274 AMAQI
9th May 2026175 AMAQI
9th May 2026136 AMAQI
9th May 2026127 AMAQI
9th May 2026168 AMAQI
9th May 2026199 AMAQI
9th May 20262210 AMAQI
9th May 20261811 AMAQI
9th May 20261312 PMAQI
9th May 2026141 PMAQI
9th May 2026142 PMAQI
9th May 2026173 PMAQI
9th May 2026204 PMAQI
9th May 2026225 PMAQI
9th May 2026216 PMAQI
9th May 2026177 PMAQI
9th May 2026168 PMAQI
9th May 2026149 PMAQI
9th May 20261910 PMAQI
9th May 20262811 PMAQI
10th May 20263012 AMAQI
10th May 2026281 AMAQI
10th May 2026362 AMAQI
10th May 2026263 AMAQI

19°C16/22°C

10th May 2026484 AMAQI
10th May 2026545 AMAQI
10th May 2026226 AMAQI
10th May 2026277 AMAQI
10th May 2026248 AMAQI
10th May 2026429 AMAQI
10th May 20264610 AMAQI
10th May 20264011 AMAQI
10th May 20262412 PMAQI
10th May 2026231 PMAQI
10th May 2026212 PMAQI
10th May 2026253 PMAQI
10th May 2026224 PMAQI
10th May 2026225 PMAQI
10th May 2026206 PMAQI
10th May 2026227 PMAQI
10th May 2026228 PMAQI
10th May 2026229 PMAQI
10th May 20262410 PMAQI
10th May 20262211 PMAQI
11th May 20262212 AMAQI
11th May 2026281 AMAQI
11th May 2026282 AMAQI
11th May 2026203 AMAQI

17°C16/19°C

11th May 2026444 AMAQI
11th May 2026165 AMAQI
11th May 2026276 AMAQI
11th May 2026297 AMAQI
11th May 2026358 AMAQI
11th May 2026389 AMAQI
11th May 20265010 AMAQI
11th May 20264711 AMAQI
11th May 20261712 PMAQI
11th May 2026181 PMAQI
11th May 2026232 PMAQI
11th May 2026233 PMAQI
11th May 2026234 PMAQI
11th May 2026265 PMAQI
11th May 2026246 PMAQI
11th May 2026257 PMAQI
11th May 2026168 PMAQI
11th May 2026209 PMAQI
11th May 20262110 PMAQI
11th May 20262311 PMAQI
12th May 20263212 AMAQI
12th May 2026311 AMAQI
12th May 2026472 AMAQI
12th May 2026383 AMAQI

18°C16/21°C

12th May 2026424 AMAQI
12th May 2026395 AMAQI
12th May 2026486 AMAQI
12th May 2026417 AMAQI
12th May 2026328 AMAQI
12th May 2026399 AMAQI
12th May 20265810 AMAQI
12th May 20262611 AMAQI
12th May 20262012 PMAQI
12th May 2026181 PMAQI
12th May 2026222 PMAQI
12th May 2026213 PMAQI
12th May 2026194 PMAQI
12th May 2026225 PMAQI
12th May 2026286 PMAQI
12th May 2026297 PMAQI
12th May 2026188 PMAQI
12th May 2026189 PMAQI
12th May 20261810 PMAQI
12th May 20262811 PMAQI
13th May 20264012 AMAQI
13th May 2026401 AMAQI
13th May 2026522 AMAQI
13th May 2026593 AMAQI

18°C15/21°C

13th May 2026624 AMAQI
13th May 2026645 AMAQI
13th May 2026606 AMAQI
13th May 2026477 AMAQI
13th May 2026448 AMAQI
13th May 2026509 AMAQI
13th May 20265610 AMAQI
13th May 20264511 AMAQI
13th May 20263012 PMAQI
13th May 2026341 PMAQI
13th May 2026312 PMAQI
13th May 2026243 PMAQI
13th May 2026304 PMAQI
13th May 2026305 PMAQI
13th May 2026286 PMAQI
13th May 2026227 PMAQI
13th May 2026178 PMAQI
13th May 2026269 PMAQI
13th May 20262410 PMAQI
13th May 20262711 PMAQI
14th May 20262412 AMAQI
14th May 2026371 AMAQI
14th May 2026482 AMAQI
14th May 2026473 AMAQI

19°C16/23°C

14th May 2026514 AMAQI
14th May 2026575 AMAQI
14th May 2026306 AMAQI
14th May 2026237 AMAQI
14th May 2026268 AMAQI
14th May 2026379 AMAQI
14th May 20265010 AMAQI
14th May 20263711 AMAQI
14th May 20263012 PMAQI
14th May 2026321 PMAQI
14th May 2026302 PMAQI
14th May 2026303 PMAQI
14th May 2026294 PMAQI
14th May 2026315 PMAQI
14th May 2026326 PMAQI
14th May 2026307 PMAQI
14th May 2026348 PMAQI
14th May 2026289 PMAQI
14th May 20262810 PMAQI
14th May 20263011 PMAQI
15th May 20263612 AMAQI
15th May 2026441 AMAQI
15th May 2026322 AMAQI
15th May 2026313 AMAQI

19°C16/23°C

15th May 2026424 AMAQI
15th May 2026345 AMAQI
15th May 2026286 AMAQI
15th May 2026267 AMAQI
15th May 2026428 AMAQI
15th May 2026489 AMAQI
15th May 20265110 AMAQI
15th May 20264111 AMAQI
15th May 20262912 PMAQI
15th May 2026291 PMAQI
15th May 2026262 PMAQI
15th May 2026393 PMAQI
15th May 2026394 PMAQI
15th May 2026235 PMAQI
15th May 2026246 PMAQI
15th May 2026307 PMAQI
15th May 2026368 PMAQI
15th May 2026259 PMAQI
15th May 20262710 PMAQI
15th May 20262311 PMAQI
16th May 20264912 AMAQI
16th May 2026721 AMAQI
16th May 2026822 AMAQI
16th May 2026923 AMAQI

18°C14/22°C

16th May 2026924 AMAQI
16th May 2026805 AMAQI
16th May 2026766 AMAQI
16th May 2026777 AMAQI
16th May 2026938 AMAQI
16th May 2026939 AMAQI
16th May 20267910 AMAQI
16th May 20268511 AMAQI
16th May 20268712 PMAQI
16th May 2026971 PMAQI
16th May 2026992 PMAQI
16th May 20261013 PMAQI
16th May 2026964 PMAQI
16th May 2026885 PMAQI
16th May 2026766 PMAQI
16th May 2026797 PMAQI
16th May 2026808 PMAQI
16th May 2026849 PMAQI
16th May 20269110 PMAQI
16th May 20269611 PMAQI
17th May 20268812 AMAQI
17th May 2026731 AMAQI
17th May 2026872 AMAQI
17th May 2026893 AMAQI

19°C15/23°C

17th May 2026834 AMAQI
17th May 2026825 AMAQI
17th May 2026846 AMAQI
17th May 2026797 AMAQI
17th May 2026748 AMAQI
17th May 2026669 AMAQI
17th May 20265810 AMAQI
17th May 20266411 AMAQI
17th May 20266612 PMAQI
17th May 2026861 PMAQI
17th May 2026752 PMAQI
17th May 2026633 PMAQI
17th May 2026604 PMAQI
17th May 2026645 PMAQI
17th May 2026586 PMAQI
17th May 2026587 PMAQI
17th May 2026528 PMAQI
17th May 2026479 PMAQI
17th May 20264610 PMAQI
17th May 20264711 PMAQI
18th May 20265712 AMAQI
18th May 2026571 AMAQI
18th May 2026602 AMAQI
18th May 2026503 AMAQI

21°C17/26°C

18th May 2026584 AMAQI
18th May 2026685 AMAQI
18th May 2026636 AMAQI
18th May 2026707 AMAQI
18th May 2026728 AMAQI
18th May 2026669 AMAQI
18th May 20266810 AMAQI
18th May 20265611 AMAQI
18th May 20268912 PMAQI
18th May 2026431 PMAQI
18th May 2026342 PMAQI
18th May 2026303 PMAQI
18th May 2026284 PMAQI
18th May 2026415 PMAQI
18th May 2026416 PMAQI
18th May 2026407 PMAQI
18th May 2026448 PMAQI
18th May 2026469 PMAQI
18th May 20264710 PMAQI
18th May 20264311 PMAQI
19th May 20265012 AMAQI
19th May 2026541 AMAQI
19th May 2026502 AMAQI
19th May 2026503 AMAQI

21°C17/24°C

19th May 2026484 AMAQI
19th May 2026505 AMAQI
19th May 2026496 AMAQI
19th May 2026447 AMAQI
19th May 2026528 AMAQI
19th May 2026579 AMAQI
19th May 20265410 AMAQI
19th May 20265411 AMAQI
19th May 20263812 PMAQI
19th May 2026301 PMAQI
19th May 2026392 PMAQI
19th May 2026373 PMAQI
19th May 2026374 PMAQI
19th May 2026385 PMAQI
19th May 2026406 PMAQI
19th May 2026497 PMAQI
19th May 2026588 PMAQI
19th May 2026639 PMAQI
19th May 20266410 PMAQI
19th May 20266511 PMAQI
20th May 20266512 AMAQI
20th May 2026661 AMAQI
20th May 2026682 AMAQI
20th May 2026703 AMAQI

22°C19/25°C

20th May 2026684 AMAQI
20th May 2026705 AMAQI
20th May 2026736 AMAQI
20th May 2026687 AMAQI
20th May 2026688 AMAQI
20th May 2026579 AMAQI
20th May 20265210 AMAQI
20th May 20265011 AMAQI
20th May 20265012 PMAQI
20th May 2026501 PMAQI
20th May 2026482 PMAQI
20th May 2026483 PMAQI
20th May 2026584 PMAQI
20th May 2026645 PMAQI
20th May 2026646 PMAQI
20th May 2026667 PMAQI
20th May 2026708 PMAQI
20th May 2026619 PMAQI
20th May 20266010 PMAQI
20th May 20266411 PMAQI
21st May 20265912 AMAQI
21st May 2026591 AMAQI
21st May 2026572 AMAQI
21st May 2026503 AMAQI

22°C19/24°C

21st May 2026394 AMAQI
21st May 2026495 AMAQI
21st May 2026456 AMAQI
21st May 2026617 AMAQI
21st May 2026638 AMAQI
21st May 2026739 AMAQI
21st May 20266410 AMAQI
21st May 20266011 AMAQI
21st May 20266012 PMAQI
21st May 2026601 PMAQI
21st May 2026602 PMAQI
21st May 2026623 PMAQI
21st May 2026634 PMAQI
21st May 2026585 PMAQI
21st May 2026626 PMAQI
21st May 2026607 PMAQI
21st May 2026598 PMAQI
21st May 2026599 PMAQI
21st May 20265910 PMAQI
21st May 20266111 PMAQI
22nd May 20265612 AMAQI
22nd May 2026601 AMAQI
22nd May 2026582 AMAQI
22nd May 2026583 AMAQI

20°C16/22°C

22nd May 2026584 AMAQI
22nd May 2026605 AMAQI
22nd May 2026646 AMAQI
22nd May 2026657 AMAQI
22nd May 2026658 AMAQI
22nd May 2026609 AMAQI
22nd May 20265810 AMAQI
22nd May 20265811 AMAQI
22nd May 20265812 PMAQI
22nd May 2026581 PMAQI
22nd May 2026582 PMAQI
22nd May 2026583 PMAQI
22nd May 2026584 PMAQI
22nd May 2026585 PMAQI
22nd May 2026586 PMAQI
22nd May 2026587 PMAQI
22nd May 2026568 PMAQI
22nd May 2026589 PMAQI
22nd May 20266310 PMAQI
22nd May 20266511 PMAQI
23rd May 20266012 AMAQI
23rd May 2026601 AMAQI
23rd May 2026632 AMAQI
23rd May 2026623 AMAQI

15°C14/16°C

23rd May 2026644 AMAQI
23rd May 2026535 AMAQI
23rd May 2026476 AMAQI
23rd May 2026477 AMAQI
23rd May 2026538 AMAQI
23rd May 2026549 AMAQI
23rd May 20265210 AMAQI
23rd May 20265011 AMAQI
23rd May 20265012 PMAQI
23rd May 2026501 PMAQI
23rd May 2026502 PMAQI
23rd May 2026503 PMAQI
23rd May 2026494 PMAQI
23rd May 2026485 PMAQI
23rd May 2026476 PMAQI
23rd May 2026507 PMAQI
23rd May 2026498 PMAQI
23rd May 2026489 PMAQI
23rd May 20265010 PMAQI
23rd May 20265711 PMAQI
24th May 20266612 AMAQI
24th May 2026621 AMAQI
24th May 2026762 AMAQI
24th May 2026753 AMAQI

16°C14/19°C

24th May 2026804 AMAQI
24th May 2026785 AMAQI
24th May 2026756 AMAQI
24th May 2026737 AMAQI
24th May 2026708 AMAQI
24th May 2026689 AMAQI
24th May 20265710 AMAQI
24th May 20265311 AMAQI
24th May 20265312 PMAQI
24th May 2026531 PMAQI
24th May 2026532 PMAQI
24th May 2026473 PMAQI
24th May 2026444 PMAQI
24th May 2026435 PMAQI
24th May 2026426 PMAQI
24th May 2026417 PMAQI
24th May 2026398 PMAQI
24th May 2026459 PMAQI
24th May 20265010 PMAQI
24th May 20264011 PMAQI
25th May 20264012 AMAQI
25th May 2026421 AMAQI
25th May 2026432 AMAQI
25th May 2026443 AMAQI

18°C16/21°C

25th May 2026414 AMAQI
25th May 2026445 AMAQI
25th May 2026476 AMAQI
25th May 2026517 AMAQI
25th May 2026588 AMAQI
25th May 2026619 AMAQI
25th May 20264610 AMAQI
25th May 20264311 AMAQI
25th May 20264312 PMAQI
25th May 2026431 PMAQI
25th May 2026432 PMAQI
25th May 2026373 PMAQI
25th May 2026344 PMAQI
25th May 2026325 PMAQI
25th May 2026386 PMAQI
25th May 2026447 PMAQI
25th May 2026558 PMAQI
25th May 2026789 PMAQI
25th May 20266510 PMAQI
25th May 20264611 PMAQI
26th May 20264712 AMAQI
26th May 2026321 AMAQI
26th May 2026382 AMAQI
26th May 2026393 AMAQI

21°C17/25°C

26th May 2026294 AMAQI
26th May 2026265 AMAQI
26th May 2026256 AMAQI
26th May 2026327 AMAQI
26th May 2026348 AMAQI
26th May 2026429 AMAQI
26th May 20265010 AMAQI
26th May 20265211 AMAQI
26th May 20265212 PMAQI
26th May 2026591 PMAQI
26th May 2026682 PMAQI
26th May 2026703 PMAQI
26th May 2026704 PMAQI
26th May 2026215 PMAQI
26th May 2026216 PMAQI
26th May 2026217 PMAQI
26th May 2026228 PMAQI
26th May 2026299 PMAQI
26th May 20262410 PMAQI
26th May 20263011 PMAQI
27th May 20262612 AMAQI
27th May 2026241 AMAQI
27th May 2026262 AMAQI
27th May 2026263 AMAQI

21°C18/25°C

27th May 2026264 AMAQI
27th May 2026265 AMAQI
27th May 2026246 AMAQI
27th May 2026247 AMAQI
27th May 2026258 AMAQI
27th May 2026309 AMAQI
27th May 20262410 AMAQI
27th May 20262611 AMAQI
27th May 20262712 PMAQI
27th May 2026261 PMAQI
27th May 2026242 PMAQI
27th May 2026223 PMAQI
27th May 2026224 PMAQI
27th May 2026215 PMAQI
27th May 2026206 PMAQI
27th May 2026207 PMAQI
27th May 2026208 PMAQI
27th May 2026209 PMAQI
27th May 20262210 PMAQI
27th May 20262411 PMAQI
28th May 20262612 AMAQI
28th May 2026271 AMAQI
28th May 2026282 AMAQI
28th May 2026253 AMAQI

22°C19/25°C

28th May 2026254 AMAQI
28th May 2026245 AMAQI
28th May 2026246 AMAQI
28th May 2026257 AMAQI
28th May 2026248 AMAQI
28th May 2026269 AMAQI
28th May 20262710 AMAQI
28th May 20262411 AMAQI
28th May 20262312 PMAQI
28th May 2026231 PMAQI
28th May 2026232 PMAQI
28th May 2026233 PMAQI
28th May 2026254 PMAQI
28th May 2026235 PMAQI
28th May 2026236 PMAQI
28th May 2026237 PMAQI
28th May 2026238 PMAQI
28th May 2026239 PMAQI
28th May 20262510 PMAQI
28th May 20262611 PMAQI
29th May 20262512 AMAQI
29th May 2026241 AMAQI
29th May 2026232 AMAQI
29th May 2026213 AMAQI

22°C20/23°C

29th May 2026214 AMAQI
29th May 2026215 AMAQI
29th May 2026226 AMAQI
29th May 2026247 AMAQI
29th May 2026258 AMAQI
29th May 2026269 AMAQI
29th May 20262810 AMAQI
29th May 20264011 AMAQI
29th May 20263512 PMAQI
29th May 2026241 PMAQI
29th May 2026272 PMAQI
29th May 2026243 PMAQI
29th May 2026224 PMAQI
29th May 2026215 PMAQI
29th May 2026226 PMAQI
29th May 2026217 PMAQI
29th May 2026218 PMAQI
29th May 2026499 PMAQI
29th May 20261410 PMAQI
29th May 20261111 PMAQI
30th May 20261512 AMAQI
30th May 2026161 AMAQI
30th May 2026142 AMAQI
30th May 2026143 AMAQI

21°C19/22°C

30th May 2026144 AMAQI
30th May 2026165 AMAQI
30th May 2026156 AMAQI
30th May 2026187 AMAQI
30th May 2026228 AMAQI
30th May 2026199 AMAQI
30th May 20262410 AMAQI
30th May 20262411 AMAQI
30th May 20262312 PMAQI
30th May 2026241 PMAQI
30th May 2026342 PMAQI
30th May 2026243 PMAQI
30th May 2026214 PMAQI
30th May 2026215 PMAQI
30th May 2026216 PMAQI
30th May 2026187 PMAQI
30th May 2026218 PMAQI
30th May 2026239 PMAQI
30th May 20262610 PMAQI
30th May 20262611 PMAQI
31st May 20262612 AMAQI
31st May 2026271 AMAQI
31st May 2026272 AMAQI
31st May 2026243 AMAQI

22°C19/25°C

31st May 2026214 AMAQI
31st May 2026235 AMAQI
31st May 2026246 AMAQI
31st May 2026257 AMAQI
31st May 2026248 AMAQI
31st May 2026279 AMAQI
31st May 20262910 AMAQI
31st May 20263211 AMAQI
31st May 20263312 PMAQI
31st May 2026301 PMAQI
31st May 2026242 PMAQI
31st May 2026243 PMAQI
31st May 2026244 PMAQI
31st May 2026235 PMAQI
31st May 2026256 PMAQI
31st May 2026267 PMAQI
31st May 2026238 PMAQI
31st May 2026259 PMAQI
31st May 20262610 PMAQI
31st May 20262711 PMAQI
1st Jun 20262812 AMAQI
1st Jun 2026281 AMAQI
1st Jun 2026292 AMAQI
1st Jun 2026303 AMAQI

23°C20/27°C

1st Jun 2026274 AMAQI
1st Jun 2026265 AMAQI
1st Jun 2026266 AMAQI
1st Jun 2026257 AMAQI
1st Jun 2026268 AMAQI
1st Jun 2026319 AMAQI
1st Jun 20263510 AMAQI
1st Jun 20263111 AMAQI
1st Jun 20263012 PMAQI
1st Jun 2026321 PMAQI
1st Jun 2026392 PMAQI
1st Jun 2026503 PMAQI
1st Jun 2026584 PMAQI
1st Jun 2026415 PMAQI
1st Jun 2026366 PMAQI
1st Jun 2026317 PMAQI
1st Jun 2026228 PMAQI
1st Jun 2026249 PMAQI
1st Jun 20262510 PMAQI
1st Jun 20262211 PMAQI
2nd Jun 20262112 AMAQI
2nd Jun 2026201 AMAQI
2nd Jun 2026242 AMAQI
2nd Jun 2026163 AMAQI

22°C19/26°C

2nd Jun 2026184 AMAQI
2nd Jun 2026175 AMAQI
2nd Jun 2026196 AMAQI
2nd Jun 2026207 AMAQI
2nd Jun 2026248 AMAQI
2nd Jun 2026239 AMAQI
2nd Jun 20262210 AMAQI
2nd Jun 20262711 AMAQI
2nd Jun 20261912 PMAQI
2nd Jun 2026221 PMAQI
2nd Jun 2026242 PMAQI
2nd Jun 2026203 PMAQI
2nd Jun 2026224 PMAQI
2nd Jun 2026195 PMAQI
2nd Jun 2026206 PMAQI
2nd Jun 2026147 PMAQI
2nd Jun 2026168 PMAQI
2nd Jun 2026139 PMAQI
2nd Jun 20261410 PMAQI
2nd Jun 20261811 PMAQI
3rd Jun 20261812 AMAQI
3rd Jun 2026181 AMAQI
3rd Jun 2026142 AMAQI
3rd Jun 2026133 AMAQI

21°C18/24°C

3rd Jun 2026144 AMAQI
4 AM
3rd Jun 2026105 AMAQI
3rd Jun 202686 AMAQI
3rd Jun 2026107 AMAQI
3rd Jun 2026108 AMAQI
3rd Jun 202699 AMAQI
3rd Jun 2026810 AMAQI
3rd Jun 20261011 AMAQI
11 AM
3rd Jun 20261712 PMAQI
3rd Jun 2026191 PMAQI
3rd Jun 2026182 PMAQI
3rd Jun 2026283 PMAQI
3rd Jun 2026204 PMAQI
3rd Jun 2026245 PMAQI
3rd Jun 2026246 PMAQI
6 PM
3rd Jun 2026247 PMAQI
3rd Jun 2026248 PMAQI
3rd Jun 2026249 PMAQI
3rd Jun 20262010 PMAQI
3rd Jun 20262411 PMAQI
11 PM
3 AM

19°C18/23°C

Day time
Avg. Highest Time
9 AM - 10 AM

44AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
5 PM - 6 PM

34AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 10 AM (Avg. 44), while the lowest AQI was between 5 PM to 6 PM (Avg. 34).
Night time
Avg. Highest Time
2 AM

42AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
8 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 2 AM (Avg. 42), while the lowest AQI was between 8 PM to 8 PM (Avg. 33).

2026 Days Vs Air Quality

Ichihara, Chiba, Japan

2026

85%

131

15%

23

Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)

Good
131 Days
Moderate
23 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 85%

Health Risk Level:

Low

In 2026, 85% of 154 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

Ichihara, Chiba, Japan

AQI levels in 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
19AQI (US)
2nd January 2026
23AQI (US)
3rd January 2026
19AQI (US)
4th January 2026
29AQI (US)
5th January 2026
39AQI (US)
6th January 2026
17AQI (US)
7th January 2026
29AQI (US)
8th January 2026
37AQI (US)
9th January 2026
16AQI (US)
10th January 2026
34AQI (US)
11th January 2026
30AQI (US)
12th January 2026
21AQI (US)
13th January 2026
36AQI (US)
14th January 2026
17AQI (US)
15th January 2026
32AQI (US)
16th January 2026
48AQI (US)
17th January 2026
51AQI (US)
18th January 2026
26AQI (US)
19th January 2026
36AQI (US)
20th January 2026
37AQI (US)
21st January 2026
13AQI (US)
22nd January 2026
23AQI (US)
23rd January 2026
37AQI (US)
24th January 2026
36AQI (US)
25th January 2026
44AQI (US)
26th January 2026
26AQI (US)
27th January 2026
44AQI (US)
28th January 2026
28AQI (US)
29th January 2026
18AQI (US)
30th January 2026
35AQI (US)
31st January 2026
37AQI (US)
1st February 2026
39AQI (US)
2nd February 2026
36AQI (US)
3rd February 2026
16AQI (US)
4th February 2026
39AQI (US)
5th February 2026
63AQI (US)
6th February 2026
56AQI (US)
7th February 2026
13AQI (US)
8th February 2026
12AQI (US)
9th February 2026
34AQI (US)
10th February 2026
35AQI (US)
11th February 2026
44AQI (US)
12th February 2026
33AQI (US)
13th February 2026
42AQI (US)
14th February 2026
60AQI (US)
15th February 2026
50AQI (US)
16th February 2026
50AQI (US)
17th February 2026
17AQI (US)
18th February 2026
39AQI (US)
19th February 2026
13AQI (US)
20th February 2026
24AQI (US)
21st February 2026
51AQI (US)
22nd February 2026
42AQI (US)
23rd February 2026
29AQI (US)
24th February 2026
38AQI (US)
25th February 2026
28AQI (US)
26th February 2026
25AQI (US)
27th February 2026
43AQI (US)
28th February 2026
40AQI (US)
1st March 2026
35AQI (US)
2nd March 2026
61AQI (US)
3rd March 2026
40AQI (US)
4th March 2026
49AQI (US)
5th March 2026
49AQI (US)
6th March 2026
47AQI (US)
7th March 2026
42AQI (US)
8th March 2026
34AQI (US)
9th March 2026
43AQI (US)
10th March 2026
57AQI (US)
11th March 2026
54AQI (US)
12th March 2026
61AQI (US)
13th March 2026
38AQI (US)
14th March 2026
44AQI (US)
15th March 2026
57AQI (US)
16th March 2026
49AQI (US)
17th March 2026
46AQI (US)
18th March 2026
48AQI (US)
19th March 2026
37AQI (US)
20th March 2026
34AQI (US)
21st March 2026
41AQI (US)
22nd March 2026
50AQI (US)
23rd March 2026
36AQI (US)
24th March 2026
34AQI (US)
25th March 2026
59AQI (US)
26th March 2026
27AQI (US)
27th March 2026
29AQI (US)
28th March 2026
52AQI (US)
29th March 2026
55AQI (US)
30th March 2026
47AQI (US)
31st March 2026
18AQI (US)
1st April 2026
27AQI (US)
2nd April 2026
16AQI (US)
3rd April 2026
42AQI (US)
4th April 2026
44AQI (US)
5th April 2026
36AQI (US)
6th April 2026
30AQI (US)
7th April 2026
26AQI (US)
8th April 2026
21AQI (US)
9th April 2026
27AQI (US)
10th April 2026
46AQI (US)
11th April 2026
45AQI (US)
12th April 2026
31AQI (US)
13th April 2026
36AQI (US)
14th April 2026
39AQI (US)
15th April 2026
34AQI (US)
16th April 2026
32AQI (US)
17th April 2026
34AQI (US)
18th April 2026
30AQI (US)
19th April 2026
32AQI (US)
20th April 2026
33AQI (US)
21st April 2026
37AQI (US)
22nd April 2026
45AQI (US)
23rd April 2026
38AQI (US)
24th April 2026
32AQI (US)
25th April 2026
45AQI (US)
26th April 2026
51AQI (US)
27th April 2026
49AQI (US)
28th April 2026
42AQI (US)
29th April 2026
40AQI (US)
30th April 2026
26AQI (US)
1st May 2026
37AQI (US)
2nd May 2026
42AQI (US)
3rd May 2026
51AQI (US)
4th May 2026
29AQI (US)
5th May 2026
22AQI (US)
6th May 2026
28AQI (US)
7th May 2026
28AQI (US)
8th May 2026
24AQI (US)
9th May 2026
22AQI (US)
10th May 2026
29AQI (US)
11th May 2026
27AQI (US)
12th May 2026
31AQI (US)
13th May 2026
39AQI (US)
14th May 2026
35AQI (US)
15th May 2026
34AQI (US)
16th May 2026
86AQI (US)
17th May 2026
69AQI (US)
18th May 2026
53AQI (US)
19th May 2026
49AQI (US)
20th May 2026
62AQI (US)
21st May 2026
58AQI (US)
22nd May 2026
60AQI (US)
23rd May 2026
53AQI (US)
24th May 2026
58AQI (US)
25th May 2026
46AQI (US)
26th May 2026
39AQI (US)
27th May 2026
24AQI (US)
28th May 2026
25AQI (US)
29th May 2026
24AQI (US)
30th May 2026
21AQI (US)
31st May 2026
26AQI (US)
1st June 2026
31AQI (US)
2nd June 2026
20AQI (US)
3rd June 2026
17AQI (US)
4th June 2026
5th June 2026
6th June 2026
7th June 2026
8th June 2026
9th June 2026
10th June 2026
11th June 2026
12th June 2026
13th June 2026
14th June 2026
15th June 2026
16th June 2026
17th June 2026
18th June 2026
19th June 2026
20th June 2026
21st June 2026
22nd June 2026
23rd June 2026
24th June 2026
25th June 2026
26th June 2026
27th June 2026
28th June 2026
29th June 2026
30th June 2026
1st July 2026
2nd July 2026
3rd July 2026
4th July 2026
5th July 2026
6th July 2026
7th July 2026
8th July 2026
9th July 2026
10th July 2026
11th July 2026
12th July 2026
13th July 2026
14th July 2026
15th July 2026
16th July 2026
17th July 2026
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

30AQI (US)

36AQI (US)

44AQI (US)

36AQI (US)

40AQI (US)

23AQI (US)

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202637AQI (US)

30
1
24
4
23
8
29
1
22
9
3
131
23

Highest AQI (US) recorded in

March

44AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202540AQI (US)

28
3
27
1
25
6
29
1
30
1
29
1
25
6
20
11
30
16
15
16
14
18
13
293
72

Highest AQI (US) recorded in

October

49AQI (US)

Lowest AQI (US) recorded in

June

32AQI (US)

202436AQI (US)

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 (US) recorded in

July

48AQI (US)

Lowest AQI (US) recorded in

September

28AQI (US)

202337AQI (US)

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 (US) recorded in

April

44AQI (US)

Lowest AQI (US) recorded in

August

24AQI (US)

202240AQI (US)

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 (US) recorded in

August

89AQI (US)

Lowest AQI (US) recorded in

December

36AQI (US)

202138AQI (US)

23
8
24
4
27
4
28
2
24
7
27
3
25
6
26
5
29
1
30
1
25
5
24
7
312
53

Highest AQI (US) recorded in

May

42AQI (US)

Lowest AQI (US) recorded in

April

33AQI (US)

202038AQI (US)

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 (US) recorded in

August

45AQI (US)

Lowest AQI (US) recorded in

September

32AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
40AQI (US)
Least Polluted Year Recorded
2024(Avg.)
36AQI (US)

Ichihara's annual 2026 AQI (US) (37) shows an average percentage change of -2.9% (improved AQI (US)) compared to previous years: 2020 (38), 2021 (38), 2022 (40), 2023 (37), 2024 (36), 2025 (40).