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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Kitakokubunjidai, Ichihara, Chiba, Japan Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

August Air Quality Analysis

Kitakokubunjidai, Ichihara, Chiba, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Aug 2026
63AQI
Lowest AQI recorded on
3rd Aug 2023
9AQI

Same Day Analysis (18th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 24 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.

Day & Night AQI Trend: 17th Aug - 18th Aug 2026

Kitakokubunjidai, Ichihara, Chiba, Japan

AQI
Day
Night
.

4 AM17th Aug 2026

6 PM

3 AM18th Aug 2026

Day time
Avg. Highest Time
7AM17th Aug

33AQI

Avg. Lowest Time
6PM17th Aug

21AQI

Night time
Avg. Highest Time
9PM17th Aug

31AQI

Avg. Lowest Time
3AM18th Aug

21AQI

In the last 24 hours,

Kitakokubunjidai's AQI reached its highest point of 33 at 7 AM during the Day, while the lowest point, 21, was recorded at 3 AM during the Night between 17th Aug and 18th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Kitakokubunjidai, Ichihara, Chiba, Japan

JulAug
20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
20th Jul 2026234 AMAQI
20th Jul 2026235 AMAQI
20th Jul 2026296 AMAQI
20th Jul 2026297 AMAQI
20th Jul 2026238 AMAQI
20th Jul 2026259 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20264911 AMAQI
20th Jul 20263312 PMAQI
20th Jul 2026331 PMAQI
20th Jul 2026212 PMAQI
20th Jul 2026473 PMAQI
20th Jul 2026624 PMAQI
20th Jul 2026445 PMAQI
20th Jul 2026386 PMAQI
20th Jul 2026327 PMAQI
20th Jul 2026258 PMAQI
20th Jul 2026319 PMAQI
20th Jul 20263310 PMAQI
20th Jul 20262911 PMAQI
21st Jul 20263612 AMAQI
21st Jul 2026331 AMAQI
21st Jul 2026332 AMAQI
21st Jul 2026333 AMAQI

28°C25/31°C

21st Jul 2026334 AMAQI
21st Jul 2026385 AMAQI
21st Jul 2026386 AMAQI
21st Jul 2026337 AMAQI
21st Jul 2026348 AMAQI
21st Jul 2026369 AMAQI
21st Jul 20265510 AMAQI
21st Jul 20265211 AMAQI
21st Jul 2026601 PMAQI
21st Jul 2026592 PMAQI
21st Jul 2026643 PMAQI
21st Jul 2026604 PMAQI
21st Jul 2026565 PMAQI
21st Jul 2026526 PMAQI
21st Jul 2026887 PMAQI
21st Jul 2026508 PMAQI
21st Jul 2026489 PMAQI
21st Jul 20265310 PMAQI
21st Jul 20265511 PMAQI
22nd Jul 20265612 AMAQI
22nd Jul 2026561 AMAQI
22nd Jul 2026572 AMAQI
22nd Jul 2026603 AMAQI

28°C25/32°C

22nd Jul 2026594 AMAQI
22nd Jul 2026575 AMAQI
22nd Jul 2026606 AMAQI
22nd Jul 2026587 AMAQI
22nd Jul 2026608 AMAQI
22nd Jul 2026649 AMAQI
22nd Jul 20266310 AMAQI
22nd Jul 20267011 AMAQI
22nd Jul 20267312 PMAQI
22nd Jul 2026681 PMAQI
22nd Jul 2026712 PMAQI
22nd Jul 2026693 PMAQI
22nd Jul 2026674 PMAQI
22nd Jul 2026645 PMAQI
22nd Jul 2026646 PMAQI
22nd Jul 2026657 PMAQI
22nd Jul 2026788 PMAQI
22nd Jul 2026729 PMAQI
22nd Jul 20268910 PMAQI
22nd Jul 20267611 PMAQI
23rd Jul 20267012 AMAQI
23rd Jul 2026571 AMAQI
23rd Jul 2026552 AMAQI
23rd Jul 2026593 AMAQI

28°C26/31°C

23rd Jul 2026584 AMAQI
23rd Jul 2026625 AMAQI
23rd Jul 2026656 AMAQI
23rd Jul 2026627 AMAQI
23rd Jul 2026638 AMAQI
23rd Jul 2026689 AMAQI
23rd Jul 20266910 AMAQI
23rd Jul 20267911 AMAQI
23rd Jul 20268312 PMAQI
23rd Jul 2026761 PMAQI
23rd Jul 2026692 PMAQI
23rd Jul 2026653 PMAQI
23rd Jul 2026634 PMAQI
23rd Jul 2026595 PMAQI
23rd Jul 2026556 PMAQI
23rd Jul 2026467 PMAQI
23rd Jul 2026368 PMAQI
23rd Jul 2026299 PMAQI
23rd Jul 20262310 PMAQI
23rd Jul 20262111 PMAQI
24th Jul 20262112 AMAQI
24th Jul 2026381 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026253 AMAQI

29°C26/34°C

24th Jul 2026274 AMAQI
24th Jul 2026275 AMAQI
24th Jul 2026256 AMAQI
24th Jul 2026347 AMAQI
24th Jul 2026348 AMAQI
24th Jul 2026319 AMAQI
24th Jul 20262310 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20263312 PMAQI
24th Jul 2026311 PMAQI
24th Jul 2026362 PMAQI
24th Jul 2026273 PMAQI
24th Jul 2026234 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026276 PMAQI
24th Jul 2026217 PMAQI
24th Jul 2026278 PMAQI
24th Jul 2026279 PMAQI
24th Jul 20262110 PMAQI
24th Jul 20262111 PMAQI
25th Jul 20262712 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026272 AMAQI
25th Jul 2026293 AMAQI

28°C25/30°C

25th Jul 2026334 AMAQI
25th Jul 2026275 AMAQI
25th Jul 2026426 AMAQI
25th Jul 2026387 AMAQI
25th Jul 2026428 AMAQI
25th Jul 2026489 AMAQI
25th Jul 20265510 AMAQI
25th Jul 20265911 AMAQI
25th Jul 20266212 PMAQI
25th Jul 2026551 PMAQI
25th Jul 2026512 PMAQI
25th Jul 2026483 PMAQI
25th Jul 2026514 PMAQI
25th Jul 2026495 PMAQI
25th Jul 2026366 PMAQI
25th Jul 2026237 PMAQI
25th Jul 2026218 PMAQI
25th Jul 2026219 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262511 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026211 AMAQI
26th Jul 2026362 AMAQI
26th Jul 2026273 AMAQI

27°C23/31°C

26th Jul 2026274 AMAQI
26th Jul 2026365 AMAQI
26th Jul 2026386 AMAQI
26th Jul 2026217 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262110 AMAQI
26th Jul 20262111 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026361 PMAQI
26th Jul 2026442 PMAQI
26th Jul 2026513 PMAQI
26th Jul 2026334 PMAQI
26th Jul 2026315 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026368 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20262910 PMAQI
26th Jul 20262711 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026211 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026253 AMAQI

26°C24/29°C

27th Jul 2026254 AMAQI
27th Jul 2026255 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026237 AMAQI
27th Jul 202668 AMAQI
27th Jul 202689 AMAQI
27th Jul 20262910 AMAQI
27th Jul 20262711 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026271 PMAQI
27th Jul 2026272 PMAQI
27th Jul 2026343 PMAQI
27th Jul 2026294 PMAQI
27th Jul 2026215 PMAQI
27th Jul 2026216 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026259 PMAQI
27th Jul 20262110 PMAQI
27th Jul 20262311 PMAQI
28th Jul 20263212 AMAQI
28th Jul 2026401 AMAQI
28th Jul 2026382 AMAQI
28th Jul 2026233 AMAQI

26°C23/29°C

28th Jul 2026234 AMAQI
28th Jul 2026295 AMAQI
28th Jul 2026296 AMAQI
28th Jul 2026297 AMAQI
28th Jul 2026318 AMAQI
28th Jul 2026259 AMAQI
28th Jul 20262510 AMAQI
28th Jul 20262911 AMAQI
28th Jul 20264812 PMAQI
28th Jul 2026511 PMAQI
28th Jul 2026482 PMAQI
28th Jul 2026293 PMAQI
28th Jul 2026444 PMAQI
28th Jul 2026465 PMAQI
28th Jul 2026386 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026278 PMAQI
28th Jul 2026259 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026331 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026273 AMAQI

26°C23/28°C

29th Jul 2026424 AMAQI
29th Jul 2026405 AMAQI
29th Jul 2026386 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026348 AMAQI
29th Jul 2026369 AMAQI
29th Jul 20263410 AMAQI
29th Jul 20262311 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026233 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026256 PMAQI
29th Jul 2026257 PMAQI
29th Jul 2026278 PMAQI
29th Jul 2026259 PMAQI
29th Jul 20262710 PMAQI
29th Jul 20263611 PMAQI
30th Jul 20263312 AMAQI
30th Jul 2026311 AMAQI
30th Jul 2026332 AMAQI
30th Jul 2026333 AMAQI

27°C24/31°C

30th Jul 2026334 AMAQI
30th Jul 2026365 AMAQI
30th Jul 2026346 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026278 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20263310 AMAQI
30th Jul 20263311 AMAQI
30th Jul 20263312 PMAQI
30th Jul 2026361 PMAQI
30th Jul 2026422 PMAQI
30th Jul 2026563 PMAQI
30th Jul 2026604 PMAQI
30th Jul 2026585 PMAQI
30th Jul 2026566 PMAQI
30th Jul 2026537 PMAQI
30th Jul 2026518 PMAQI
30th Jul 2026509 PMAQI
30th Jul 20265210 PMAQI
30th Jul 20265611 PMAQI
31st Jul 20265412 AMAQI
31st Jul 2026551 AMAQI
31st Jul 2026402 AMAQI
31st Jul 2026363 AMAQI

29°C26/32°C

31st Jul 2026384 AMAQI
31st Jul 2026425 AMAQI
31st Jul 2026426 AMAQI
31st Jul 2026447 AMAQI
31st Jul 2026448 AMAQI
31st Jul 2026449 AMAQI
31st Jul 20264610 AMAQI
31st Jul 20265211 AMAQI
31st Jul 20265912 PMAQI
31st Jul 2026631 PMAQI
31st Jul 2026532 PMAQI
31st Jul 2026463 PMAQI
31st Jul 2026484 PMAQI
31st Jul 2026545 PMAQI
31st Jul 2026546 PMAQI
31st Jul 2026537 PMAQI
31st Jul 2026498 PMAQI
31st Jul 2026509 PMAQI
31st Jul 20265210 PMAQI
31st Jul 20264811 PMAQI
1st Aug 20265012 AMAQI
1st Aug 2026491 AMAQI
1st Aug 2026522 AMAQI
1st Aug 2026563 AMAQI

29°C26/32°C

1st Aug 2026574 AMAQI
1st Aug 2026555 AMAQI
1st Aug 2026576 AMAQI
1st Aug 2026547 AMAQI
1st Aug 2026578 AMAQI
1st Aug 2026599 AMAQI
1st Aug 20266510 AMAQI
1st Aug 20266811 AMAQI
1st Aug 20266812 PMAQI
1st Aug 2026651 PMAQI
1st Aug 2026692 PMAQI
1st Aug 2026673 PMAQI
1st Aug 2026684 PMAQI
1st Aug 2026685 PMAQI
1st Aug 2026856 PMAQI
1st Aug 2026817 PMAQI
1st Aug 2026748 PMAQI
1st Aug 2026659 PMAQI
1st Aug 20266510 PMAQI
1st Aug 20266411 PMAQI
2nd Aug 20266712 AMAQI
2nd Aug 2026621 AMAQI
2nd Aug 2026642 AMAQI
2nd Aug 2026653 AMAQI

29°C26/32°C

2nd Aug 2026624 AMAQI
2nd Aug 2026695 AMAQI
2nd Aug 2026676 AMAQI
2nd Aug 2026707 AMAQI
2nd Aug 2026678 AMAQI
2nd Aug 2026719 AMAQI
2nd Aug 20266910 AMAQI
2nd Aug 20267011 AMAQI
2nd Aug 20266812 PMAQI
2nd Aug 2026461 PMAQI
2nd Aug 2026382 PMAQI
2nd Aug 2026363 PMAQI
2nd Aug 2026364 PMAQI
2nd Aug 2026295 PMAQI
2nd Aug 2026296 PMAQI
2nd Aug 2026127 PMAQI
2nd Aug 2026188 PMAQI
2nd Aug 2026369 PMAQI
2nd Aug 20263310 PMAQI
2nd Aug 2026911 PMAQI
3rd Aug 20261212 AMAQI
3rd Aug 2026141 AMAQI
3rd Aug 202682 AMAQI
3rd Aug 202683 AMAQI

28°C24/32°C

3rd Aug 202684 AMAQI
3rd Aug 202685 AMAQI
3rd Aug 2026176 AMAQI
3rd Aug 2026127 AMAQI
3rd Aug 2026128 AMAQI
3rd Aug 2026179 AMAQI
3rd Aug 20261710 AMAQI
3rd Aug 20261411 AMAQI
3rd Aug 20262112 PMAQI
3rd Aug 2026121 PMAQI
3rd Aug 2026212 PMAQI
3rd Aug 2026253 PMAQI
3rd Aug 2026234 PMAQI
3rd Aug 2026195 PMAQI
3rd Aug 2026296 PMAQI
3rd Aug 2026297 PMAQI
3rd Aug 2026278 PMAQI
3rd Aug 2026239 PMAQI
3rd Aug 20261910 PMAQI
3rd Aug 20261711 PMAQI
4th Aug 20261912 AMAQI
4th Aug 2026231 AMAQI
4th Aug 2026232 AMAQI
4th Aug 2026163 AMAQI

24°C23/27°C

4th Aug 2026164 AMAQI
4th Aug 2026175 AMAQI
4th Aug 2026146 AMAQI
4th Aug 2026237 AMAQI
4th Aug 2026238 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20262510 AMAQI
4th Aug 20262111 AMAQI
4th Aug 20262312 PMAQI
4th Aug 2026251 PMAQI
4th Aug 2026252 PMAQI
4th Aug 2026213 PMAQI
4th Aug 2026254 PMAQI
4th Aug 2026255 PMAQI
4th Aug 2026256 PMAQI
4th Aug 2026257 PMAQI
4th Aug 2026258 PMAQI
4th Aug 2026279 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20262711 PMAQI
5th Aug 20262712 AMAQI
5th Aug 2026251 AMAQI
5th Aug 2026212 AMAQI
5th Aug 2026233 AMAQI

24°C23/27°C

5th Aug 2026254 AMAQI
5th Aug 2026215 AMAQI
5th Aug 2026216 AMAQI
5th Aug 2026237 AMAQI
5th Aug 2026238 AMAQI
5th Aug 2026239 AMAQI
5th Aug 20262110 AMAQI
5th Aug 20262311 AMAQI
5th Aug 20262112 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026212 PMAQI
5th Aug 2026253 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026215 PMAQI
5th Aug 2026236 PMAQI
5th Aug 2026277 PMAQI
5th Aug 2026238 PMAQI
5th Aug 2026219 PMAQI
5th Aug 20262110 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262312 AMAQI
6th Aug 2026211 AMAQI
6th Aug 2026252 AMAQI
6th Aug 2026253 AMAQI

25°C22/29°C

6th Aug 2026254 AMAQI
6th Aug 2026255 AMAQI
6th Aug 2026256 AMAQI
6th Aug 2026257 AMAQI
6th Aug 2026258 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20262910 AMAQI
6th Aug 20263111 AMAQI
6th Aug 20262712 PMAQI
6th Aug 2026231 PMAQI
6th Aug 2026252 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026294 PMAQI
6th Aug 2026315 PMAQI
6th Aug 2026256 PMAQI
6th Aug 2026237 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026259 PMAQI
6th Aug 20262310 PMAQI
6th Aug 20262111 PMAQI
7th Aug 20262312 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026252 AMAQI
7th Aug 2026253 AMAQI

28°C24/32°C

7th Aug 2026274 AMAQI
7th Aug 2026275 AMAQI
7th Aug 2026256 AMAQI
7th Aug 2026257 AMAQI
7th Aug 2026298 AMAQI
7th Aug 2026279 AMAQI
7th Aug 20262510 AMAQI
7th Aug 20262511 AMAQI
7th Aug 20262512 PMAQI
7th Aug 2026251 PMAQI
7th Aug 2026252 PMAQI
7th Aug 2026273 PMAQI
7th Aug 2026234 PMAQI
7th Aug 2026235 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026257 PMAQI
7th Aug 2026258 PMAQI
7th Aug 2026239 PMAQI
7th Aug 20262110 PMAQI
7th Aug 20262311 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026211 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026273 AMAQI

28°C25/30°C

8th Aug 2026234 AMAQI
8th Aug 2026215 AMAQI
8th Aug 2026256 AMAQI
8th Aug 2026297 AMAQI
8th Aug 2026258 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20263311 AMAQI
8th Aug 20263312 PMAQI
8th Aug 2026311 PMAQI
8th Aug 2026382 PMAQI
8th Aug 2026293 PMAQI
8th Aug 2026304 PMAQI
8th Aug 2026255 PMAQI
8th Aug 2026546 PMAQI
8th Aug 2026297 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026299 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262511 PMAQI
9th Aug 20262512 AMAQI
9th Aug 2026251 AMAQI
9th Aug 2026252 AMAQI
9th Aug 2026253 AMAQI

27°C24/30°C

9th Aug 2026254 AMAQI
9th Aug 2026255 AMAQI
9th Aug 2026256 AMAQI
9th Aug 2026257 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026259 AMAQI
9th Aug 20263310 AMAQI
9th Aug 20263311 AMAQI
9th Aug 20262712 PMAQI
9th Aug 2026251 PMAQI
9th Aug 2026212 PMAQI
9th Aug 2026273 PMAQI
9th Aug 2026364 PMAQI
9th Aug 2026335 PMAQI
9th Aug 2026296 PMAQI
9th Aug 2026317 PMAQI
9th Aug 2026298 PMAQI
9th Aug 2026319 PMAQI
9th Aug 20263610 PMAQI
9th Aug 20263111 PMAQI
10th Aug 20263112 AMAQI
10th Aug 2026271 AMAQI
10th Aug 2026272 AMAQI
10th Aug 2026253 AMAQI

27°C24/30°C

10th Aug 2026254 AMAQI
10th Aug 2026255 AMAQI
10th Aug 2026236 AMAQI
10th Aug 2026257 AMAQI
10th Aug 2026238 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262310 AMAQI
10th Aug 20262311 AMAQI
10th Aug 20262312 PMAQI
10th Aug 2026211 PMAQI
10th Aug 2026212 PMAQI
10th Aug 2026213 PMAQI
10th Aug 2026214 PMAQI
10th Aug 2026215 PMAQI
10th Aug 2026256 PMAQI
10th Aug 2026217 PMAQI
10th Aug 2026218 PMAQI
10th Aug 2026219 PMAQI
10th Aug 20262110 PMAQI
10th Aug 20262111 PMAQI
11th Aug 20262512 AMAQI
11th Aug 2026251 AMAQI
11th Aug 2026252 AMAQI
11th Aug 2026253 AMAQI

26°C23/30°C

11th Aug 2026254 AMAQI
11th Aug 2026275 AMAQI
11th Aug 2026296 AMAQI
11th Aug 2026317 AMAQI
11th Aug 2026428 AMAQI
11th Aug 2026389 AMAQI
11th Aug 20263310 AMAQI
11th Aug 20262711 AMAQI
11th Aug 20262512 PMAQI
11th Aug 2026251 PMAQI
11th Aug 2026252 PMAQI
11th Aug 2026213 PMAQI
11th Aug 2026254 PMAQI
11th Aug 2026215 PMAQI
11th Aug 2026236 PMAQI
11th Aug 2026237 PMAQI
11th Aug 2026298 PMAQI
11th Aug 2026299 PMAQI
11th Aug 20262910 PMAQI
11th Aug 20263111 PMAQI
12th Aug 20262712 AMAQI
12th Aug 2026231 AMAQI
12th Aug 2026212 AMAQI
12th Aug 2026293 AMAQI

23°C20/27°C

12th Aug 2026344 AMAQI
12th Aug 2026275 AMAQI
12th Aug 2026216 AMAQI
12th Aug 2026237 AMAQI
12th Aug 2026218 AMAQI
12th Aug 2026219 AMAQI
12th Aug 20262610 AMAQI
12th Aug 20262911 AMAQI
12th Aug 20262112 PMAQI
12th Aug 2026211 PMAQI
12th Aug 2026212 PMAQI
12th Aug 2026253 PMAQI
12th Aug 2026214 PMAQI
12th Aug 2026235 PMAQI
12th Aug 2026256 PMAQI
12th Aug 2026257 PMAQI
12th Aug 2026258 PMAQI
12th Aug 2026219 PMAQI
12th Aug 20262510 PMAQI
12th Aug 20262511 PMAQI
13th Aug 20262512 AMAQI
13th Aug 2026291 AMAQI
13th Aug 2026252 AMAQI
13th Aug 2026213 AMAQI

23°C21/26°C

13th Aug 2026334 AMAQI
13th Aug 2026215 AMAQI
13th Aug 2026256 AMAQI
13th Aug 2026257 AMAQI
13th Aug 2026278 AMAQI
13th Aug 2026259 AMAQI
13th Aug 20263210 AMAQI
13th Aug 20263011 AMAQI
13th Aug 20262912 PMAQI
13th Aug 2026291 PMAQI
13th Aug 2026252 PMAQI
13th Aug 2026233 PMAQI
13th Aug 2026254 PMAQI
13th Aug 2026255 PMAQI
13th Aug 2026276 PMAQI
13th Aug 2026297 PMAQI
13th Aug 2026298 PMAQI
13th Aug 2026299 PMAQI
13th Aug 20262110 PMAQI
13th Aug 20262111 PMAQI
14th Aug 20262112 AMAQI
14th Aug 2026231 AMAQI
14th Aug 2026252 AMAQI
14th Aug 2026213 AMAQI

26°C23/30°C

14th Aug 2026254 AMAQI
14th Aug 2026215 AMAQI
14th Aug 2026216 AMAQI
14th Aug 2026217 AMAQI
14th Aug 2026278 AMAQI
14th Aug 2026259 AMAQI
14th Aug 20262910 AMAQI
14th Aug 20262111 AMAQI
14th Aug 20262512 PMAQI
14th Aug 2026271 PMAQI
14th Aug 2026252 PMAQI
14th Aug 2026233 PMAQI
14th Aug 2026254 PMAQI
14th Aug 2026255 PMAQI
14th Aug 2026256 PMAQI
14th Aug 2026257 PMAQI
14th Aug 2026258 PMAQI
14th Aug 2026259 PMAQI
14th Aug 20262910 PMAQI
14th Aug 20262511 PMAQI
15th Aug 20262312 AMAQI
15th Aug 2026251 AMAQI
15th Aug 2026252 AMAQI
15th Aug 2026273 AMAQI

26°C24/28°C

15th Aug 2026274 AMAQI
15th Aug 2026215 AMAQI
15th Aug 2026256 AMAQI
15th Aug 2026217 AMAQI
15th Aug 2026258 AMAQI
15th Aug 2026299 AMAQI
15th Aug 20262310 AMAQI
15th Aug 20262311 AMAQI
15th Aug 20262512 PMAQI
15th Aug 2026211 PMAQI
15th Aug 2026212 PMAQI
15th Aug 2026193 PMAQI
15th Aug 2026214 PMAQI
15th Aug 2026215 PMAQI
15th Aug 2026216 PMAQI
15th Aug 2026217 PMAQI
15th Aug 2026298 PMAQI
15th Aug 2026299 PMAQI
15th Aug 20262510 PMAQI
15th Aug 20262511 PMAQI
16th Aug 20262512 AMAQI
16th Aug 2026251 AMAQI
16th Aug 2026252 AMAQI
16th Aug 2026213 AMAQI

26°C24/30°C

16th Aug 2026254 AMAQI
16th Aug 2026255 AMAQI
16th Aug 2026276 AMAQI
16th Aug 2026257 AMAQI
16th Aug 2026258 AMAQI
16th Aug 2026259 AMAQI
16th Aug 20262310 AMAQI
16th Aug 20262511 AMAQI
16th Aug 20262512 PMAQI
16th Aug 2026251 PMAQI
16th Aug 2026212 PMAQI
16th Aug 2026213 PMAQI
16th Aug 2026214 PMAQI
16th Aug 2026215 PMAQI
16th Aug 2026256 PMAQI
16th Aug 2026257 PMAQI
16th Aug 2026238 PMAQI
16th Aug 2026259 PMAQI
16th Aug 20262110 PMAQI
16th Aug 20262111 PMAQI
17th Aug 20262112 AMAQI
17th Aug 2026211 AMAQI
17th Aug 2026192 AMAQI
17th Aug 2026233 AMAQI

26°C23/29°C

17th Aug 2026254 AMAQI
17th Aug 2026255 AMAQI
17th Aug 2026256 AMAQI
17th Aug 2026337 AMAQI
17th Aug 2026298 AMAQI
17th Aug 2026259 AMAQI
17th Aug 20262510 AMAQI
17th Aug 20262911 AMAQI
17th Aug 20263112 PMAQI
17th Aug 2026291 PMAQI
17th Aug 2026292 PMAQI
17th Aug 2026273 PMAQI
17th Aug 2026254 PMAQI
17th Aug 2026215 PMAQI
17th Aug 2026216 PMAQI
17th Aug 2026257 PMAQI
17th Aug 2026238 PMAQI
17th Aug 2026319 PMAQI
17th Aug 20262110 PMAQI
17th Aug 20262111 PMAQI
18th Aug 20262112 AMAQI
18th Aug 2026291 AMAQI
18th Aug 2026252 AMAQI
18th Aug 2026213 AMAQI

13°C9/18°C

18th Aug 2026254 AMAQI
4 AM
18th Aug 2026255 AMAQI
18th Aug 2026256 AMAQI
18th Aug 2026257 AMAQI
18th Aug 2026258 AMAQI
18th Aug 2026219 AMAQI
18th Aug 20262110 AMAQI
18th Aug 20262511 AMAQI
11 AM
18th Aug 20261712 PMAQI
18th Aug 2026191 PMAQI
18th Aug 2026252 PMAQI
18th Aug 2026253 PMAQI
18th Aug 2026234 PMAQI
18th Aug 2026255 PMAQI
18th Aug 2026256 PMAQI
6 PM
18th Aug 2026257 PMAQI
18th Aug 2026258 PMAQI
18th Aug 2026259 PMAQI
18th Aug 20262310 PMAQI
18th Aug 20262111 PMAQI
11 PM
3 AM

25°C24/27°C

Day time
Avg. Highest Time
11 AM - 6 PM

35AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
4 AM - 5 AM

31AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 6 PM (Avg. 35), while the lowest AQI was between 4 AM to 5 AM (Avg. 31).
Night time
Avg. Highest Time
7 PM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
2 AM - 3 AM

30AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 7 PM (Avg. 33), while the lowest AQI was between 2 AM to 3 AM (Avg. 30).

2026 Days Vs Air Quality

Kitakokubunjidai, Ichihara, Chiba, Japan

2026

88%

202

12%

28

Total number of days with different AQI categories in last 230 days in 2026 (135 days remaining)

Good
202 Days
Moderate
28 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 88%

Health Risk Level:

Low

In 2026, 88% of 230 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.

Annual Air Quality Insights

Kitakokubunjidai, Ichihara, Chiba, Japan

AQI levels in 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
17AQI (US)
2nd January 2026
23AQI (US)
3rd January 2026
20AQI (US)
4th January 2026
31AQI (US)
5th January 2026
40AQI (US)
6th January 2026
16AQI (US)
7th January 2026
28AQI (US)
8th January 2026
35AQI (US)
9th January 2026
14AQI (US)
10th January 2026
32AQI (US)
11th January 2026
25AQI (US)
12th January 2026
22AQI (US)
13th January 2026
38AQI (US)
14th January 2026
17AQI (US)
15th January 2026
33AQI (US)
16th January 2026
49AQI (US)
17th January 2026
51AQI (US)
18th January 2026
26AQI (US)
19th January 2026
33AQI (US)
20th January 2026
39AQI (US)
21st January 2026
16AQI (US)
22nd January 2026
23AQI (US)
23rd January 2026
37AQI (US)
24th January 2026
38AQI (US)
25th January 2026
43AQI (US)
26th January 2026
27AQI (US)
27th January 2026
44AQI (US)
28th January 2026
29AQI (US)
29th January 2026
16AQI (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
40AQI (US)
5th February 2026
64AQI (US)
6th February 2026
55AQI (US)
7th February 2026
12AQI (US)
8th February 2026
11AQI (US)
9th February 2026
33AQI (US)
10th February 2026
33AQI (US)
11th February 2026
42AQI (US)
12th February 2026
34AQI (US)
13th February 2026
42AQI (US)
14th February 2026
59AQI (US)
15th February 2026
49AQI (US)
16th February 2026
49AQI (US)
17th February 2026
14AQI (US)
18th February 2026
38AQI (US)
19th February 2026
12AQI (US)
20th February 2026
23AQI (US)
21st February 2026
49AQI (US)
22nd February 2026
39AQI (US)
23rd February 2026
28AQI (US)
24th February 2026
37AQI (US)
25th February 2026
28AQI (US)
26th February 2026
22AQI (US)
27th February 2026
43AQI (US)
28th February 2026
40AQI (US)
1st March 2026
34AQI (US)
2nd March 2026
59AQI (US)
3rd March 2026
39AQI (US)
4th March 2026
49AQI (US)
5th March 2026
50AQI (US)
6th March 2026
47AQI (US)
7th March 2026
43AQI (US)
8th March 2026
35AQI (US)
9th March 2026
47AQI (US)
10th March 2026
57AQI (US)
11th March 2026
55AQI (US)
12th March 2026
62AQI (US)
13th March 2026
36AQI (US)
14th March 2026
44AQI (US)
15th March 2026
56AQI (US)
16th March 2026
48AQI (US)
17th March 2026
47AQI (US)
18th March 2026
51AQI (US)
19th March 2026
38AQI (US)
20th March 2026
34AQI (US)
21st March 2026
41AQI (US)
22nd March 2026
50AQI (US)
23rd March 2026
35AQI (US)
24th March 2026
31AQI (US)
25th March 2026
59AQI (US)
26th March 2026
25AQI (US)
27th March 2026
28AQI (US)
28th March 2026
51AQI (US)
29th March 2026
55AQI (US)
30th March 2026
45AQI (US)
31st March 2026
15AQI (US)
1st April 2026
25AQI (US)
2nd April 2026
10AQI (US)
3rd April 2026
40AQI (US)
4th April 2026
43AQI (US)
5th April 2026
36AQI (US)
6th April 2026
30AQI (US)
7th April 2026
25AQI (US)
8th April 2026
21AQI (US)
9th April 2026
26AQI (US)
10th April 2026
46AQI (US)
11th April 2026
46AQI (US)
12th April 2026
30AQI (US)
13th April 2026
36AQI (US)
14th April 2026
39AQI (US)
15th April 2026
32AQI (US)
16th April 2026
31AQI (US)
17th April 2026
34AQI (US)
18th April 2026
30AQI (US)
19th April 2026
32AQI (US)
20th April 2026
34AQI (US)
21st April 2026
37AQI (US)
22nd April 2026
45AQI (US)
23rd April 2026
37AQI (US)
24th April 2026
32AQI (US)
25th April 2026
44AQI (US)
26th April 2026
51AQI (US)
27th April 2026
48AQI (US)
28th April 2026
42AQI (US)
29th April 2026
39AQI (US)
30th April 2026
22AQI (US)
1st May 2026
43AQI (US)
2nd May 2026
50AQI (US)
3rd May 2026
51AQI (US)
4th May 2026
29AQI (US)
5th May 2026
22AQI (US)
6th May 2026
28AQI (US)
7th May 2026
27AQI (US)
8th May 2026
24AQI (US)
9th May 2026
21AQI (US)
10th May 2026
29AQI (US)
11th May 2026
26AQI (US)
12th May 2026
31AQI (US)
13th May 2026
37AQI (US)
14th May 2026
35AQI (US)
15th May 2026
33AQI (US)
16th May 2026
86AQI (US)
17th May 2026
69AQI (US)
18th May 2026
53AQI (US)
19th May 2026
48AQI (US)
20th May 2026
62AQI (US)
21st May 2026
58AQI (US)
22nd May 2026
59AQI (US)
23rd May 2026
52AQI (US)
24th May 2026
58AQI (US)
25th May 2026
46AQI (US)
26th May 2026
38AQI (US)
27th May 2026
23AQI (US)
28th May 2026
24AQI (US)
29th May 2026
24AQI (US)
30th May 2026
20AQI (US)
31st May 2026
25AQI (US)
1st June 2026
31AQI (US)
2nd June 2026
17AQI (US)
3rd June 2026
16AQI (US)
4th June 2026
22AQI (US)
5th June 2026
21AQI (US)
6th June 2026
21AQI (US)
7th June 2026
21AQI (US)
8th June 2026
20AQI (US)
9th June 2026
23AQI (US)
10th June 2026
21AQI (US)
11th June 2026
24AQI (US)
12th June 2026
23AQI (US)
13th June 2026
44AQI (US)
14th June 2026
40AQI (US)
15th June 2026
12AQI (US)
16th June 2026
24AQI (US)
17th June 2026
22AQI (US)
18th June 2026
24AQI (US)
19th June 2026
25AQI (US)
20th June 2026
22AQI (US)
21st June 2026
20AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
21AQI (US)
24th June 2026
21AQI (US)
25th June 2026
25AQI (US)
26th June 2026
28AQI (US)
27th June 2026
27AQI (US)
28th June 2026
26AQI (US)
29th June 2026
25AQI (US)
30th June 2026
22AQI (US)
1st July 2026
34AQI (US)
2nd July 2026
22AQI (US)
3rd July 2026
25AQI (US)
4th July 2026
25AQI (US)
5th July 2026
19AQI (US)
6th July 2026
24AQI (US)
7th July 2026
25AQI (US)
8th July 2026
23AQI (US)
9th July 2026
19AQI (US)
10th July 2026
20AQI (US)
11th July 2026
20AQI (US)
12th July 2026
24AQI (US)
13th July 2026
38AQI (US)
14th July 2026
42AQI (US)
15th July 2026
41AQI (US)
16th July 2026
73AQI (US)
17th July 2026
53AQI (US)
18th July 2026
14AQI (US)
19th July 2026
17AQI (US)
20th July 2026
31AQI (US)
21st July 2026
48AQI (US)
22nd July 2026
66AQI (US)
23rd July 2026
58AQI (US)
24th July 2026
27AQI (US)
25th July 2026
38AQI (US)
26th July 2026
30AQI (US)
27th July 2026
24AQI (US)
28th July 2026
33AQI (US)
29th July 2026
30AQI (US)
30th July 2026
41AQI (US)
31st July 2026
49AQI (US)
1st August 2026
63AQI (US)
2nd August 2026
50AQI (US)
3rd August 2026
17AQI (US)
4th August 2026
23AQI (US)
5th August 2026
23AQI (US)
6th August 2026
25AQI (US)
7th August 2026
25AQI (US)
8th August 2026
27AQI (US)
9th August 2026
28AQI (US)
10th August 2026
23AQI (US)
11th August 2026
27AQI (US)
12th August 2026
24AQI (US)
13th August 2026
26AQI (US)
14th August 2026
24AQI (US)
15th August 2026
24AQI (US)
16th August 2026
24AQI (US)
17th August 2026
25AQI (US)
18th August 2026
24AQI (US)
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)

35AQI (US)

44AQI (US)

35AQI (US)

40AQI (US)

24AQI (US)

33AQI (US)

28AQI (US)

No. of days

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

202634AQI (US)

30
1
25
3
22
9
29
1
22
9
30
27
4
17
1
202
28

Highest AQI (US) recorded in

March

44AQI (US)

Lowest AQI (US) recorded in

June

24AQI (US)

202539AQI (US)

28
3
27
1
25
6
29
1
30
1
29
1
24
7
22
9
30
17
14
16
14
17
14
294
71

Highest AQI (US) recorded in

October

49AQI (US)

Lowest AQI (US) recorded in

June

31AQI (US)

202434AQI (US)

30
1
26
3
27
4
25
5
27
4
28
2
20
11
30
1
29
1
30
1
27
3
29
2
328
38

Highest AQI (US) recorded in

July

45AQI (US)

Lowest AQI (US) recorded in

August

24AQI (US)

202334AQI (US)

26
4
25
3
29
2
25
5
29
2
28
2
29
2
31
29
1
30
1
23
6
23
8
327
36

Highest AQI (US) recorded in

April

41AQI (US)

Lowest AQI (US) recorded in

August

20AQI (US)

202233AQI (US)

28
2
19
2
28
3
25
4
29
2
28
2
20
1
1
28
28
3
28
2
30
1
292
22

Highest AQI (US) recorded in

March

38AQI (US)

Lowest AQI (US) recorded in

August

21AQI (US)

202133AQI (US)

17
13
19
9
25
4
29
1
26
5
27
3
26
3
1
1
29
2
30
30
1
26
4
24
7
308
52
1
1

Highest AQI (US) recorded in

January

47AQI (US)

Lowest AQI (US) recorded in

August

24AQI (US)

202048AQI (US)

11
2
14
7
15
3
16
14
11
20
15
15
1
10
6
19
12
16
14
17
14
144
107
1

Highest AQI (US) recorded in

July

55AQI (US)

Lowest AQI (US) recorded in

March

41AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2020(Avg.)
48AQI (US)
Least Polluted Year Recorded
2021(Avg.)
33AQI (US)

Kitakokubunjidai's annual 2026 AQI (US) (34) shows an average percentage change of -5.9% (improved AQI (US)) compared to previous years: 2020 (48), 2021 (33), 2022 (33), 2023 (34), 2024 (34), 2025 (39).