Chikusei, Ibaraki, 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
Chikusei, Ibaraki, Japan
2022
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
29th Jun 2022
77AQILowest AQI recorded on
1st Jun 2025
18AQISame Day Analysis (3rd June):
On this day, AQI across the 4 years varied significantly: 2026 ranks 4th highest AQI at 27 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Jun - 3rd Jun 2026
Chikusei, Ibaraki, Japan
AQI
Day
Night
.
4 AM2nd Jun 2026
6 PM
3 AM3rd Jun 2026
Day time
Avg. Highest Time
10AM2nd Jun
45AQI
Avg. Lowest Time
5AM2nd Jun
26AQI
Night time
Avg. Highest Time
1AM3rd Jun
30AQI
Avg. Lowest Time
10PM2nd Jun
25AQI
In the last 24 hours,
Chikusei's AQI reached its highest point of 45 at 10 AM during the Day, while the lowest point, 25, was recorded at 10 PM during the Night between 2nd Jun and 3rd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Chikusei, Ibaraki, 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 2026174 AMAQI
5th May 2026215 AMAQI
5th May 2026176 AMAQI
5th May 2026197 AMAQI
5th May 2026148 AMAQI
5th May 2026199 AMAQI
5th May 20261710 AMAQI
5th May 20261911 AMAQI
5th May 20262112 PMAQI
5th May 2026211 PMAQI
5th May 2026192 PMAQI
5th May 2026143 PMAQI
5th May 2026274 PMAQI
5th May 2026125 PMAQI
5th May 2026246 PMAQI
5th May 2026307 PMAQI
5th May 2026208 PMAQI
5th May 2026209 PMAQI
5th May 20262810 PMAQI
5th May 20262211 PMAQI
6th May 20262512 AMAQI
6th May 2026231 AMAQI
6th May 2026282 AMAQI
6th May 2026263 AMAQI
17°C12/23°C
6th May 2026364 AMAQI
6th May 2026235 AMAQI
6th May 2026326 AMAQI
6th May 2026527 AMAQI
6th May 2026328 AMAQI
6th May 2026489 AMAQI
6th May 20264410 AMAQI
6th May 20265411 AMAQI
6th May 20265012 PMAQI
6th May 2026241 PMAQI
6th May 2026272 PMAQI
6th May 2026223 PMAQI
6th May 2026244 PMAQI
6th May 2026235 PMAQI
6th May 2026266 PMAQI
6th May 2026247 PMAQI
6th May 2026278 PMAQI
6th May 2026389 PMAQI
6th May 20262610 PMAQI
6th May 20262811 PMAQI
7th May 20264612 AMAQI
7th May 2026441 AMAQI
7th May 2026482 AMAQI
7th May 2026423 AMAQI
18°C15/21°C
7th May 2026464 AMAQI
7th May 2026465 AMAQI
7th May 2026316 AMAQI
7th May 2026427 AMAQI
7th May 2026408 AMAQI
7th May 2026479 AMAQI
7th May 20264810 AMAQI
7th May 20263811 AMAQI
7th May 20262812 PMAQI
7th May 2026261 PMAQI
7th May 2026232 PMAQI
7th May 2026243 PMAQI
7th May 2026264 PMAQI
7th May 2026245 PMAQI
7th May 2026276 PMAQI
7th May 2026257 PMAQI
7th May 2026218 PMAQI
7th May 2026309 PMAQI
7th May 20262210 PMAQI
7th May 20263011 PMAQI
8th May 20262612 AMAQI
8th May 2026231 AMAQI
8th May 2026242 AMAQI
8th May 2026203 AMAQI
22°C16/28°C
8th May 2026234 AMAQI
8th May 2026295 AMAQI
8th May 2026296 AMAQI
8th May 2026247 AMAQI
8th May 2026238 AMAQI
8th May 2026349 AMAQI
8th May 20264610 AMAQI
8th May 20263611 AMAQI
8th May 20262712 PMAQI
8th May 2026201 PMAQI
8th May 2026262 PMAQI
8th May 2026303 PMAQI
8th May 2026244 PMAQI
8th May 2026335 PMAQI
8th May 2026266 PMAQI
8th May 2026207 PMAQI
8th May 2026228 PMAQI
8th May 2026249 PMAQI
8th May 20262610 PMAQI
8th May 20262511 PMAQI
9th May 20262612 AMAQI
9th May 2026261 AMAQI
9th May 2026242 AMAQI
9th May 2026283 AMAQI
21°C16/26°C
9th May 2026444 AMAQI
9th May 2026265 AMAQI
9th May 2026206 AMAQI
9th May 2026207 AMAQI
9th May 2026278 AMAQI
9th May 2026359 AMAQI
9th May 20264810 AMAQI
9th May 20264211 AMAQI
9th May 20262012 PMAQI
9th May 2026241 PMAQI
9th May 2026162 PMAQI
9th May 2026223 PMAQI
9th May 2026224 PMAQI
9th May 2026245 PMAQI
9th May 2026206 PMAQI
9th May 2026167 PMAQI
9th May 2026208 PMAQI
9th May 2026229 PMAQI
9th May 20262010 PMAQI
9th May 20262811 PMAQI
10th May 20262712 AMAQI
10th May 2026281 AMAQI
10th May 2026382 AMAQI
10th May 2026283 AMAQI
18°C15/22°C
10th May 2026504 AMAQI
10th May 2026535 AMAQI
10th May 2026206 AMAQI
10th May 2026407 AMAQI
10th May 2026228 AMAQI
10th May 2026449 AMAQI
10th May 20265010 AMAQI
10th May 20264411 AMAQI
10th May 20262912 PMAQI
10th May 2026261 PMAQI
10th May 2026302 PMAQI
10th May 2026333 PMAQI
10th May 2026314 PMAQI
10th May 2026305 PMAQI
10th May 2026306 PMAQI
10th May 2026227 PMAQI
10th May 2026428 PMAQI
10th May 2026429 PMAQI
10th May 20263010 PMAQI
10th May 20262411 PMAQI
11th May 20262612 AMAQI
11th May 2026291 AMAQI
11th May 2026302 AMAQI
11th May 2026273 AMAQI
18°C14/24°C
11th May 2026484 AMAQI
11th May 2026175 AMAQI
11th May 2026326 AMAQI
11th May 2026327 AMAQI
11th May 2026368 AMAQI
11th May 2026409 AMAQI
11th May 20265310 AMAQI
11th May 20264711 AMAQI
11th May 20263312 PMAQI
11th May 2026251 PMAQI
11th May 2026252 PMAQI
11th May 2026343 PMAQI
11th May 2026244 PMAQI
11th May 2026295 PMAQI
11th May 2026296 PMAQI
11th May 2026247 PMAQI
11th May 2026288 PMAQI
11th May 2026229 PMAQI
11th May 20263210 PMAQI
11th May 20262411 PMAQI
12th May 20263412 AMAQI
12th May 2026361 AMAQI
12th May 2026462 AMAQI
12th May 2026443 AMAQI
19°C16/23°C
12th May 2026514 AMAQI
12th May 2026465 AMAQI
12th May 2026526 AMAQI
12th May 2026527 AMAQI
12th May 2026408 AMAQI
12th May 2026569 AMAQI
12th May 20265710 AMAQI
12th May 20263311 AMAQI
12th May 20264412 PMAQI
12th May 2026211 PMAQI
12th May 2026262 PMAQI
12th May 2026263 PMAQI
12th May 2026274 PMAQI
12th May 2026245 PMAQI
12th May 2026376 PMAQI
12th May 2026407 PMAQI
12th May 2026168 PMAQI
12th May 2026269 PMAQI
12th May 20262110 PMAQI
12th May 20263811 PMAQI
13th May 20265012 AMAQI
13th May 2026561 AMAQI
13th May 2026582 AMAQI
13th May 2026603 AMAQI
20°C16/26°C
13th May 2026644 AMAQI
13th May 2026645 AMAQI
13th May 2026576 AMAQI
13th May 2026507 AMAQI
13th May 2026498 AMAQI
13th May 2026549 AMAQI
13th May 20266310 AMAQI
13th May 20265411 AMAQI
13th May 20264212 PMAQI
13th May 2026191 PMAQI
13th May 2026332 PMAQI
13th May 2026263 PMAQI
13th May 2026364 PMAQI
13th May 2026285 PMAQI
13th May 2026226 PMAQI
13th May 2026227 PMAQI
13th May 2026188 PMAQI
13th May 2026209 PMAQI
13th May 20263610 PMAQI
13th May 20263411 PMAQI
14th May 20263812 AMAQI
14th May 2026451 AMAQI
14th May 2026562 AMAQI
14th May 2026583 AMAQI
21°C17/27°C
14th May 2026584 AMAQI
14th May 2026555 AMAQI
14th May 2026266 AMAQI
14th May 2026227 AMAQI
14th May 2026258 AMAQI
14th May 2026359 AMAQI
14th May 20264710 AMAQI
14th May 20262911 AMAQI
14th May 20262812 PMAQI
14th May 2026221 PMAQI
14th May 2026362 PMAQI
14th May 2026323 PMAQI
14th May 2026234 PMAQI
14th May 2026295 PMAQI
14th May 2026366 PMAQI
14th May 2026367 PMAQI
14th May 2026368 PMAQI
14th May 2026269 PMAQI
14th May 20262210 PMAQI
14th May 20262811 PMAQI
15th May 20263812 AMAQI
15th May 2026471 AMAQI
15th May 2026422 AMAQI
15th May 2026383 AMAQI
18°C15/24°C
15th May 2026524 AMAQI
15th May 2026385 AMAQI
15th May 2026306 AMAQI
15th May 2026287 AMAQI
15th May 2026458 AMAQI
15th May 2026479 AMAQI
15th May 20265310 AMAQI
15th May 20263811 AMAQI
15th May 20262612 PMAQI
15th May 2026251 PMAQI
15th May 2026222 PMAQI
15th May 2026383 PMAQI
15th May 2026364 PMAQI
15th May 2026255 PMAQI
15th May 2026266 PMAQI
15th May 2026277 PMAQI
15th May 2026388 PMAQI
15th May 2026349 PMAQI
15th May 20262910 PMAQI
15th May 20262211 PMAQI
16th May 20265412 AMAQI
16th May 2026741 AMAQI
16th May 2026802 AMAQI
16th May 2026903 AMAQI
18°C13/25°C
16th May 2026944 AMAQI
16th May 2026825 AMAQI
16th May 2026766 AMAQI
16th May 2026767 AMAQI
16th May 2026928 AMAQI
16th May 2026909 AMAQI
16th May 20267810 AMAQI
16th May 20268411 AMAQI
16th May 20268812 PMAQI
16th May 2026961 PMAQI
16th May 2026972 PMAQI
16th May 2026983 PMAQI
16th May 2026934 PMAQI
16th May 2026825 PMAQI
16th May 2026786 PMAQI
16th May 2026787 PMAQI
16th May 2026768 PMAQI
16th May 2026769 PMAQI
16th May 20269210 PMAQI
16th May 20269811 PMAQI
17th May 20268112 AMAQI
17th May 2026701 AMAQI
17th May 2026902 AMAQI
17th May 2026863 AMAQI
20°C14/27°C
17th May 2026864 AMAQI
17th May 2026785 AMAQI
17th May 2026786 AMAQI
17th May 2026787 AMAQI
17th May 2026728 AMAQI
17th May 2026649 AMAQI
17th May 20265810 AMAQI
17th May 20266011 AMAQI
17th May 20266612 PMAQI
17th May 2026821 PMAQI
17th May 2026762 PMAQI
17th May 2026623 PMAQI
17th May 2026604 PMAQI
17th May 2026645 PMAQI
17th May 2026586 PMAQI
17th May 2026577 PMAQI
17th May 2026508 PMAQI
17th May 2026449 PMAQI
17th May 20264610 PMAQI
17th May 20264611 PMAQI
18th May 20265712 AMAQI
18th May 2026561 AMAQI
18th May 2026582 AMAQI
18th May 2026533 AMAQI
23°C17/30°C
18th May 2026584 AMAQI
18th May 2026665 AMAQI
18th May 2026626 AMAQI
18th May 2026707 AMAQI
18th May 2026718 AMAQI
18th May 2026689 AMAQI
18th May 20266810 AMAQI
18th May 20265811 AMAQI
18th May 20268812 PMAQI
18th May 2026421 PMAQI
18th May 2026332 PMAQI
18th May 2026293 PMAQI
18th May 2026294 PMAQI
18th May 2026425 PMAQI
18th May 2026406 PMAQI
18th May 2026407 PMAQI
18th May 2026468 PMAQI
18th May 2026469 PMAQI
18th May 20265010 PMAQI
18th May 20264411 PMAQI
19th May 20265212 AMAQI
19th May 2026531 AMAQI
19th May 2026482 AMAQI
19th May 2026523 AMAQI
24°C18/31°C
19th May 2026514 AMAQI
19th May 2026495 AMAQI
19th May 2026486 AMAQI
19th May 2026427 AMAQI
19th May 2026498 AMAQI
19th May 2026569 AMAQI
19th May 20265310 AMAQI
19th May 20265511 AMAQI
19th May 20264012 PMAQI
19th May 2026291 PMAQI
19th May 2026382 PMAQI
19th May 2026363 PMAQI
19th May 2026364 PMAQI
19th May 2026365 PMAQI
19th May 2026426 PMAQI
19th May 2026527 PMAQI
19th May 2026588 PMAQI
19th May 2026629 PMAQI
19th May 20266610 PMAQI
19th May 20266811 PMAQI
20th May 20266412 AMAQI
20th May 2026681 AMAQI
20th May 2026662 AMAQI
20th May 2026673 AMAQI
24°C19/31°C
20th May 2026704 AMAQI
20th May 2026685 AMAQI
20th May 2026726 AMAQI
20th May 2026687 AMAQI
20th May 2026688 AMAQI
20th May 2026589 AMAQI
20th May 20265310 AMAQI
20th May 20265011 AMAQI
20th May 20265012 PMAQI
20th May 2026501 PMAQI
20th May 2026482 PMAQI
20th May 2026463 PMAQI
20th May 2026604 PMAQI
20th May 2026625 PMAQI
20th May 2026586 PMAQI
20th May 2026627 PMAQI
20th May 2026668 PMAQI
20th May 2026609 PMAQI
20th May 20265810 PMAQI
20th May 20266611 PMAQI
21st May 20266012 AMAQI
21st May 2026591 AMAQI
21st May 2026572 AMAQI
21st May 2026503 AMAQI
24°C19/30°C
21st May 2026404 AMAQI
21st May 2026515 AMAQI
21st May 2026476 AMAQI
21st May 2026607 AMAQI
21st May 2026648 AMAQI
21st May 2026719 AMAQI
21st May 20266210 AMAQI
21st May 20266011 AMAQI
21st May 20266012 PMAQI
21st May 2026601 PMAQI
21st May 2026602 PMAQI
21st May 2026643 PMAQI
21st May 2026664 PMAQI
21st May 2026625 PMAQI
21st May 2026636 PMAQI
21st May 2026627 PMAQI
21st May 2026598 PMAQI
21st May 2026609 PMAQI
21st May 20266010 PMAQI
21st May 20266011 PMAQI
22nd May 20265712 AMAQI
22nd May 2026601 AMAQI
22nd May 2026592 AMAQI
22nd May 2026603 AMAQI
18°C15/21°C
22nd May 2026624 AMAQI
22nd May 2026645 AMAQI
22nd May 2026656 AMAQI
22nd May 2026677 AMAQI
22nd May 2026648 AMAQI
22nd May 2026609 AMAQI
22nd May 20265910 AMAQI
22nd May 20266011 AMAQI
22nd May 20266012 PMAQI
22nd May 2026601 PMAQI
22nd May 2026602 PMAQI
22nd May 2026603 PMAQI
22nd May 2026604 PMAQI
22nd May 2026605 PMAQI
22nd May 2026606 PMAQI
22nd May 2026607 PMAQI
22nd May 2026598 PMAQI
22nd May 2026589 PMAQI
22nd May 20266410 PMAQI
22nd May 20266711 PMAQI
23rd May 20265812 AMAQI
23rd May 2026601 AMAQI
23rd May 2026642 AMAQI
23rd May 2026623 AMAQI
13°C12/14°C
23rd May 2026624 AMAQI
23rd May 2026545 AMAQI
23rd May 2026476 AMAQI
23rd May 2026477 AMAQI
23rd May 2026548 AMAQI
23rd May 2026559 AMAQI
23rd May 20265510 AMAQI
23rd May 20265411 AMAQI
23rd May 20265412 PMAQI
23rd May 2026541 PMAQI
23rd May 2026542 PMAQI
23rd May 2026543 PMAQI
23rd May 2026504 PMAQI
23rd May 2026485 PMAQI
23rd May 2026486 PMAQI
23rd May 2026517 PMAQI
23rd May 2026528 PMAQI
23rd May 2026509 PMAQI
23rd May 20265210 PMAQI
23rd May 20265711 PMAQI
24th May 20266912 AMAQI
24th May 2026661 AMAQI
24th May 2026712 AMAQI
24th May 2026783 AMAQI
15°C11/20°C
24th May 2026824 AMAQI
24th May 2026825 AMAQI
24th May 2026766 AMAQI
24th May 2026707 AMAQI
24th May 2026708 AMAQI
24th May 2026699 AMAQI
24th May 20265610 AMAQI
24th May 20265211 AMAQI
24th May 20265212 PMAQI
24th May 2026521 PMAQI
24th May 2026522 PMAQI
24th May 2026473 PMAQI
24th May 2026484 PMAQI
24th May 2026465 PMAQI
24th May 2026446 PMAQI
24th May 2026467 PMAQI
24th May 2026408 PMAQI
24th May 2026459 PMAQI
24th May 20264910 PMAQI
24th May 20263811 PMAQI
25th May 20264212 AMAQI
25th May 2026481 AMAQI
25th May 2026422 AMAQI
25th May 2026483 AMAQI
18°C14/22°C
25th May 2026464 AMAQI
25th May 2026445 AMAQI
25th May 2026506 AMAQI
25th May 2026527 AMAQI
25th May 2026578 AMAQI
25th May 2026609 AMAQI
25th May 20264810 AMAQI
25th May 20264611 AMAQI
25th May 20264612 PMAQI
25th May 2026461 PMAQI
25th May 2026462 PMAQI
25th May 2026383 PMAQI
25th May 2026364 PMAQI
25th May 2026315 PMAQI
25th May 2026366 PMAQI
25th May 2026447 PMAQI
25th May 2026548 PMAQI
25th May 2026789 PMAQI
25th May 20266610 PMAQI
25th May 20264611 PMAQI
26th May 20264412 AMAQI
26th May 2026331 AMAQI
26th May 2026362 AMAQI
26th May 2026383 AMAQI
22°C17/28°C
26th May 2026294 AMAQI
26th May 2026275 AMAQI
26th May 2026276 AMAQI
26th May 2026347 AMAQI
26th May 2026388 AMAQI
26th May 2026409 AMAQI
26th May 20265210 AMAQI
26th May 20265411 AMAQI
26th May 20265412 PMAQI
26th May 2026581 PMAQI
26th May 2026682 PMAQI
26th May 2026683 PMAQI
26th May 2026684 PMAQI
26th May 2026215 PMAQI
26th May 2026226 PMAQI
26th May 2026207 PMAQI
26th May 2026228 PMAQI
26th May 2026389 PMAQI
26th May 20263810 PMAQI
26th May 20264211 PMAQI
27th May 20263812 AMAQI
27th May 2026301 AMAQI
27th May 2026292 AMAQI
27th May 2026383 AMAQI
22°C18/26°C
27th May 2026364 AMAQI
27th May 2026365 AMAQI
27th May 2026286 AMAQI
27th May 2026247 AMAQI
27th May 2026328 AMAQI
27th May 2026309 AMAQI
27th May 20262510 AMAQI
27th May 20263311 AMAQI
27th May 20262412 PMAQI
27th May 2026251 PMAQI
27th May 2026282 PMAQI
27th May 2026243 PMAQI
27th May 2026234 PMAQI
27th May 2026235 PMAQI
27th May 2026236 PMAQI
27th May 2026237 PMAQI
27th May 2026208 PMAQI
27th May 2026209 PMAQI
27th May 20262310 PMAQI
27th May 20262411 PMAQI
28th May 20262612 AMAQI
28th May 2026261 AMAQI
28th May 2026262 AMAQI
28th May 2026253 AMAQI
24°C19/29°C
28th May 2026254 AMAQI
28th May 2026265 AMAQI
28th May 2026246 AMAQI
28th May 2026267 AMAQI
28th May 2026288 AMAQI
28th May 2026269 AMAQI
28th May 20262710 AMAQI
28th May 20262411 AMAQI
28th May 20262412 PMAQI
28th May 2026251 PMAQI
28th May 2026242 PMAQI
28th May 2026233 PMAQI
28th May 2026244 PMAQI
28th May 2026225 PMAQI
28th May 2026246 PMAQI
28th May 2026247 PMAQI
28th May 2026248 PMAQI
28th May 2026249 PMAQI
28th May 20262510 PMAQI
28th May 20262411 PMAQI
29th May 20262312 AMAQI
29th May 2026221 AMAQI
29th May 2026252 AMAQI
29th May 2026203 AMAQI
24°C21/28°C
29th May 2026214 AMAQI
29th May 2026245 AMAQI
29th May 2026226 AMAQI
29th May 2026267 AMAQI
29th May 2026268 AMAQI
29th May 2026349 AMAQI
29th May 20264210 AMAQI
29th May 20264611 AMAQI
29th May 20263412 PMAQI
29th May 2026241 PMAQI
29th May 2026272 PMAQI
29th May 2026263 PMAQI
29th May 2026204 PMAQI
29th May 2026225 PMAQI
29th May 2026206 PMAQI
29th May 2026207 PMAQI
29th May 2026228 PMAQI
29th May 2026209 PMAQI
29th May 20262410 PMAQI
29th May 20262411 PMAQI
30th May 20262912 AMAQI
30th May 2026361 AMAQI
30th May 2026262 AMAQI
30th May 2026213 AMAQI
25°C21/32°C
30th May 2026204 AMAQI
30th May 2026215 AMAQI
30th May 2026226 AMAQI
30th May 2026227 AMAQI
30th May 2026228 AMAQI
30th May 2026329 AMAQI
30th May 20263310 AMAQI
30th May 20263011 AMAQI
30th May 20263012 PMAQI
30th May 2026241 PMAQI
30th May 2026312 PMAQI
30th May 2026243 PMAQI
30th May 2026234 PMAQI
30th May 2026255 PMAQI
30th May 2026246 PMAQI
30th May 2026217 PMAQI
30th May 2026248 PMAQI
30th May 2026229 PMAQI
30th May 20263210 PMAQI
30th May 20263111 PMAQI
31st May 20262612 AMAQI
31st May 2026281 AMAQI
31st May 2026302 AMAQI
31st May 2026273 AMAQI
24°C18/31°C
31st May 2026254 AMAQI
31st May 2026225 AMAQI
31st May 2026266 AMAQI
31st May 2026247 AMAQI
31st May 2026278 AMAQI
31st May 2026279 AMAQI
31st May 20262810 AMAQI
31st May 20263411 AMAQI
31st May 20263812 PMAQI
31st May 2026331 PMAQI
31st May 2026242 PMAQI
31st May 2026293 PMAQI
31st May 2026244 PMAQI
31st May 2026275 PMAQI
31st May 2026296 PMAQI
31st May 2026317 PMAQI
31st May 2026258 PMAQI
31st May 2026269 PMAQI
31st May 20262710 PMAQI
31st May 20262611 PMAQI
1st Jun 20262612 AMAQI
1st Jun 2026291 AMAQI
1st Jun 2026302 AMAQI
1st Jun 2026343 AMAQI
25°C21/30°C
1st Jun 2026294 AMAQI
1st Jun 2026295 AMAQI
1st Jun 2026276 AMAQI
1st Jun 2026267 AMAQI
1st Jun 2026278 AMAQI
1st Jun 2026339 AMAQI
1st Jun 20263110 AMAQI
1st Jun 20263011 AMAQI
1st Jun 20263012 PMAQI
1st Jun 2026321 PMAQI
1st Jun 2026342 PMAQI
1st Jun 2026293 PMAQI
1st Jun 2026324 PMAQI
1st Jun 2026275 PMAQI
1st Jun 2026346 PMAQI
1st Jun 2026367 PMAQI
1st Jun 2026308 PMAQI
1st Jun 2026279 PMAQI
1st Jun 20263510 PMAQI
1st Jun 20263811 PMAQI
2nd Jun 20263612 AMAQI
2nd Jun 2026311 AMAQI
2nd Jun 2026422 AMAQI
2nd Jun 2026303 AMAQI
26°C21/32°C
2nd Jun 2026284 AMAQI
2nd Jun 2026265 AMAQI
2nd Jun 2026386 AMAQI
2nd Jun 2026287 AMAQI
2nd Jun 2026278 AMAQI
2nd Jun 2026309 AMAQI
2nd Jun 20264510 AMAQI
2nd Jun 20264411 AMAQI
2nd Jun 20263412 PMAQI
2nd Jun 2026371 PMAQI
2nd Jun 2026342 PMAQI
2nd Jun 2026363 PMAQI
2nd Jun 2026284 PMAQI
2nd Jun 2026285 PMAQI
2nd Jun 2026296 PMAQI
2nd Jun 2026277 PMAQI
2nd Jun 2026258 PMAQI
2nd Jun 2026269 PMAQI
2nd Jun 20262510 PMAQI
2nd Jun 20262811 PMAQI
3rd Jun 20262712 AMAQI
3rd Jun 2026301 AMAQI
3rd Jun 2026282 AMAQI
3rd Jun 2026263 AMAQI
23°C18/27°C
3rd Jun 2026244 AMAQI
4 AM3rd Jun 2026245 AMAQI
3rd Jun 2026256 AMAQI
3rd Jun 2026277 AMAQI
3rd Jun 2026288 AMAQI
3rd Jun 2026329 AMAQI
3rd Jun 20263110 AMAQI
3rd Jun 20263411 AMAQI
11 AM3rd Jun 20263412 PMAQI
3rd Jun 2026181 PMAQI
3rd Jun 2026362 PMAQI
3rd Jun 2026353 PMAQI
3rd Jun 2026254 PMAQI
3rd Jun 2026265 PMAQI
3rd Jun 2026246 PMAQI
6 PM3rd Jun 2026247 PMAQI
3rd Jun 2026228 PMAQI
3rd Jun 2026249 PMAQI
3rd Jun 20262610 PMAQI
3rd Jun 20262411 PMAQI
11 PM3 AM
18°C17/19°C
Day time
Avg. Highest Time
10 AM
48AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
5 PM - 6 PM
35AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 10 AM (Avg. 48), while the lowest AQI was between 5 PM to 6 PM (Avg. 35).
Night time
Avg. Highest Time
2 AM - 3 AM
44AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
7 PM - 8 PM
35AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 3 AM (Avg. 44), while the lowest AQI was between 7 PM to 8 PM (Avg. 35).
2026 Days Vs Air Quality
Chikusei, Ibaraki, Japan
2026
78%
120
22%
34
Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)
Good
120 DaysModerate
34 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 78%
Health Risk Level:
Low
In 2026, 78% 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
Chikusei, Ibaraki, 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)
19AQI (US)
2nd January 2026
23AQI (US)
23AQI (US)
3rd January 2026
27AQI (US)
27AQI (US)
4th January 2026
29AQI (US)
29AQI (US)
5th January 2026
42AQI (US)
42AQI (US)
6th January 2026
26AQI (US)
26AQI (US)
7th January 2026
39AQI (US)
39AQI (US)
8th January 2026
45AQI (US)
45AQI (US)
9th January 2026
28AQI (US)
28AQI (US)
10th January 2026
47AQI (US)
47AQI (US)
11th January 2026
49AQI (US)
49AQI (US)
12th January 2026
20AQI (US)
20AQI (US)
13th January 2026
37AQI (US)
37AQI (US)
14th January 2026
15AQI (US)
15AQI (US)
15th January 2026
36AQI (US)
36AQI (US)
16th January 2026
55AQI (US)
55AQI (US)
17th January 2026
46AQI (US)
46AQI (US)
18th January 2026
31AQI (US)
31AQI (US)
19th January 2026
49AQI (US)
49AQI (US)
20th January 2026
43AQI (US)
43AQI (US)
21st January 2026
19AQI (US)
19AQI (US)
22nd January 2026
27AQI (US)
27AQI (US)
23rd January 2026
41AQI (US)
41AQI (US)
24th January 2026
43AQI (US)
43AQI (US)
25th January 2026
39AQI (US)
39AQI (US)
26th January 2026
18AQI (US)
18AQI (US)
27th January 2026
25AQI (US)
25AQI (US)
28th January 2026
24AQI (US)
24AQI (US)
29th January 2026
19AQI (US)
19AQI (US)
30th January 2026
35AQI (US)
35AQI (US)
31st January 2026
40AQI (US)
40AQI (US)
1st February 2026
39AQI (US)
39AQI (US)
2nd February 2026
21AQI (US)
21AQI (US)
3rd February 2026
23AQI (US)
23AQI (US)
4th February 2026
44AQI (US)
44AQI (US)
5th February 2026
54AQI (US)
54AQI (US)
6th February 2026
56AQI (US)
56AQI (US)
7th February 2026
17AQI (US)
17AQI (US)
8th February 2026
17AQI (US)
17AQI (US)
9th February 2026
36AQI (US)
36AQI (US)
10th February 2026
42AQI (US)
42AQI (US)
11th February 2026
59AQI (US)
59AQI (US)
12th February 2026
31AQI (US)
31AQI (US)
13th February 2026
38AQI (US)
38AQI (US)
14th February 2026
67AQI (US)
67AQI (US)
15th February 2026
73AQI (US)
73AQI (US)
16th February 2026
58AQI (US)
58AQI (US)
17th February 2026
19AQI (US)
19AQI (US)
18th February 2026
33AQI (US)
33AQI (US)
19th February 2026
31AQI (US)
31AQI (US)
20th February 2026
32AQI (US)
32AQI (US)
21st February 2026
44AQI (US)
44AQI (US)
22nd February 2026
40AQI (US)
40AQI (US)
23rd February 2026
45AQI (US)
45AQI (US)
24th February 2026
36AQI (US)
36AQI (US)
25th February 2026
32AQI (US)
32AQI (US)
26th February 2026
10AQI (US)
10AQI (US)
27th February 2026
40AQI (US)
40AQI (US)
28th February 2026
48AQI (US)
48AQI (US)
1st March 2026
39AQI (US)
39AQI (US)
2nd March 2026
89AQI (US)
89AQI (US)
3rd March 2026
47AQI (US)
47AQI (US)
4th March 2026
61AQI (US)
61AQI (US)
5th March 2026
62AQI (US)
62AQI (US)
6th March 2026
55AQI (US)
55AQI (US)
7th March 2026
40AQI (US)
40AQI (US)
8th March 2026
15AQI (US)
15AQI (US)
9th March 2026
38AQI (US)
38AQI (US)
10th March 2026
59AQI (US)
59AQI (US)
11th March 2026
62AQI (US)
62AQI (US)
12th March 2026
69AQI (US)
69AQI (US)
13th March 2026
43AQI (US)
43AQI (US)
14th March 2026
50AQI (US)
50AQI (US)
15th March 2026
61AQI (US)
61AQI (US)
16th March 2026
61AQI (US)
61AQI (US)
17th March 2026
58AQI (US)
58AQI (US)
18th March 2026
58AQI (US)
58AQI (US)
19th March 2026
39AQI (US)
39AQI (US)
20th March 2026
34AQI (US)
34AQI (US)
21st March 2026
46AQI (US)
46AQI (US)
22nd March 2026
51AQI (US)
51AQI (US)
23rd March 2026
55AQI (US)
55AQI (US)
24th March 2026
46AQI (US)
46AQI (US)
25th March 2026
55AQI (US)
55AQI (US)
26th March 2026
25AQI (US)
25AQI (US)
27th March 2026
19AQI (US)
19AQI (US)
28th March 2026
49AQI (US)
49AQI (US)
29th March 2026
57AQI (US)
57AQI (US)
30th March 2026
59AQI (US)
59AQI (US)
31st March 2026
34AQI (US)
34AQI (US)
1st April 2026
17AQI (US)
17AQI (US)
2nd April 2026
26AQI (US)
26AQI (US)
3rd April 2026
47AQI (US)
47AQI (US)
4th April 2026
46AQI (US)
46AQI (US)
5th April 2026
23AQI (US)
23AQI (US)
6th April 2026
24AQI (US)
24AQI (US)
7th April 2026
41AQI (US)
41AQI (US)
8th April 2026
19AQI (US)
19AQI (US)
9th April 2026
32AQI (US)
32AQI (US)
10th April 2026
49AQI (US)
49AQI (US)
11th April 2026
38AQI (US)
38AQI (US)
12th April 2026
32AQI (US)
32AQI (US)
13th April 2026
36AQI (US)
36AQI (US)
14th April 2026
40AQI (US)
40AQI (US)
15th April 2026
39AQI (US)
39AQI (US)
16th April 2026
31AQI (US)
31AQI (US)
17th April 2026
39AQI (US)
39AQI (US)
18th April 2026
34AQI (US)
34AQI (US)
19th April 2026
39AQI (US)
39AQI (US)
20th April 2026
38AQI (US)
38AQI (US)
21st April 2026
42AQI (US)
42AQI (US)
22nd April 2026
47AQI (US)
47AQI (US)
23rd April 2026
38AQI (US)
38AQI (US)
24th April 2026
34AQI (US)
34AQI (US)
25th April 2026
46AQI (US)
46AQI (US)
26th April 2026
51AQI (US)
51AQI (US)
27th April 2026
49AQI (US)
49AQI (US)
28th April 2026
43AQI (US)
43AQI (US)
29th April 2026
40AQI (US)
40AQI (US)
30th April 2026
41AQI (US)
41AQI (US)
1st May 2026
51AQI (US)
51AQI (US)
2nd May 2026
52AQI (US)
52AQI (US)
3rd May 2026
39AQI (US)
39AQI (US)
4th May 2026
30AQI (US)
30AQI (US)
5th May 2026
19AQI (US)
19AQI (US)
6th May 2026
32AQI (US)
32AQI (US)
7th May 2026
34AQI (US)
34AQI (US)
8th May 2026
27AQI (US)
27AQI (US)
9th May 2026
26AQI (US)
26AQI (US)
10th May 2026
34AQI (US)
34AQI (US)
11th May 2026
31AQI (US)
31AQI (US)
12th May 2026
37AQI (US)
37AQI (US)
13th May 2026
42AQI (US)
42AQI (US)
14th May 2026
35AQI (US)
35AQI (US)
15th May 2026
35AQI (US)
35AQI (US)
16th May 2026
85AQI (US)
85AQI (US)
17th May 2026
67AQI (US)
67AQI (US)
18th May 2026
53AQI (US)
53AQI (US)
19th May 2026
49AQI (US)
49AQI (US)
20th May 2026
61AQI (US)
61AQI (US)
21st May 2026
59AQI (US)
59AQI (US)
22nd May 2026
61AQI (US)
61AQI (US)
23rd May 2026
54AQI (US)
54AQI (US)
24th May 2026
58AQI (US)
58AQI (US)
25th May 2026
48AQI (US)
48AQI (US)
26th May 2026
40AQI (US)
40AQI (US)
27th May 2026
27AQI (US)
27AQI (US)
28th May 2026
25AQI (US)
25AQI (US)
29th May 2026
26AQI (US)
26AQI (US)
30th May 2026
26AQI (US)
26AQI (US)
31st May 2026
28AQI (US)
28AQI (US)
1st June 2026
31AQI (US)
31AQI (US)
2nd June 2026
32AQI (US)
32AQI (US)
3rd June 2026
27AQI (US)
27AQI (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
33AQI (US)
39AQI (US)
50AQI (US)
37AQI (US)
42AQI (US)
30AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202640AQI (US)
30
1
22
6
15
16
29
1
21
10
3
120
34
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
June30AQI (US)
202541AQI (US)
29
2
28
26
5
29
1
30
1
29
1
24
7
25
6
27
3
15
16
10
20
14
17
286
79
Highest AQI (US) recorded in
November54AQI (US)
Lowest AQI (US) recorded in
May29AQI (US)
202440AQI (US)
16
2
5
2
1
12
29
1
19
12
31
12
17
27
4
27
3
31
213
38
Highest AQI (US) recorded in
September54AQI (US)
Lowest AQI (US) recorded in
August33AQI (US)
202347AQI (US)
13
6
1
16
9
2
1
18
13
2
3
3
28
3
80
34
3
1
Highest AQI (US) recorded in
February59AQI (US)
Lowest AQI (US) recorded in
November21AQI (US)
202244AQI (US)
24
7
18
3
21
10
14
3
24
7
16
14
14
7
1
26
2
23
8
19
11
15
6
214
79
Highest AQI (US) recorded in
August53AQI (US)
Lowest AQI (US) recorded in
September40AQI (US)
202140AQI (US)
25
5
20
8
25
5
26
4
25
6
23
7
30
1
26
5
27
3
28
3
25
5
23
8
303
60
Highest AQI (US) recorded in
June44AQI (US)
Lowest AQI (US) recorded in
April37AQI (US)
202040AQI (US)
8
4
20
1
16
2
23
7
28
3
17
14
19
28
3
19
11
6
4
1
184
49
1
Highest AQI (US) recorded in
December51AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
47AQI (US)Least Polluted Year Recorded
2020(Avg.)
40AQI (US)Chikusei's annual 2026 AQI (US) (40) shows an average percentage change of -4.4% (improved AQI (US)) compared to previous years: 2020 (40), 2021 (40), 2022 (44), 2023 (47), 2024 (40), 2025 (41).
