Ishii, Kasama, 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+
August Air Quality Analysis
Ishii, Kasama, Ibaraki, Japan
2022
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2025
55AQILowest AQI recorded on
3rd Aug 2026
14AQISame Day Analysis (9th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 8th Aug - 9th Aug 2026
Ishii, Kasama, Ibaraki, Japan
AQI
Day
Night
.
4 AM8th Aug 2026
6 PM
3 AM9th Aug 2026
Day time
Avg. Highest Time
4AM8th Aug
27AQI
Avg. Lowest Time
4PM8th Aug
21AQI
Night time
Avg. Highest Time
3AM9th Aug
42AQI
Avg. Lowest Time
2AM9th Aug
21AQI
In the last 24 hours,
Ishii's AQI reached its highest point of 42 at 3 AM during the Night, while the lowest point, 21, was recorded at 2 AM during the Night between 8th Aug and 9th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Ishii, Kasama, Ibaraki, Japan
JulAug
11th - 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 - 06th06th - 07th07th - 08th08th - 09th09th
Day
Night
11th Jul 2026104 AMAQI
11th Jul 2026275 AMAQI
11th Jul 2026306 AMAQI
11th Jul 2026297 AMAQI
11th Jul 2026318 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263110 AMAQI
11th Jul 20262811 AMAQI
11th Jul 20262512 PMAQI
11th Jul 2026241 PMAQI
11th Jul 2026242 PMAQI
11th Jul 2026243 PMAQI
11th Jul 2026264 PMAQI
11th Jul 2026305 PMAQI
11th Jul 2026316 PMAQI
11th Jul 2026267 PMAQI
11th Jul 2026248 PMAQI
11th Jul 2026319 PMAQI
11th Jul 20262910 PMAQI
11th Jul 20262711 PMAQI
12th Jul 20263112 AMAQI
12th Jul 2026311 AMAQI
12th Jul 2026282 AMAQI
12th Jul 2026283 AMAQI
26°C22/32°C
12th Jul 2026274 AMAQI
12th Jul 2026265 AMAQI
12th Jul 2026276 AMAQI
12th Jul 2026277 AMAQI
12th Jul 2026268 AMAQI
12th Jul 2026299 AMAQI
12th Jul 20262610 AMAQI
12th Jul 20262211 AMAQI
12th Jul 20262412 PMAQI
12th Jul 2026231 PMAQI
12th Jul 2026232 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026254 PMAQI
12th Jul 2026265 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026307 PMAQI
12th Jul 2026288 PMAQI
12th Jul 2026319 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20262911 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026321 AMAQI
13th Jul 2026282 AMAQI
13th Jul 2026303 AMAQI
24°C23/26°C
13th Jul 2026284 AMAQI
13th Jul 2026295 AMAQI
13th Jul 2026286 AMAQI
13th Jul 2026307 AMAQI
13th Jul 2026288 AMAQI
13th Jul 2026269 AMAQI
13th Jul 20263010 AMAQI
13th Jul 20262611 AMAQI
13th Jul 20262612 PMAQI
13th Jul 2026251 PMAQI
13th Jul 2026242 PMAQI
13th Jul 2026223 PMAQI
13th Jul 2026304 PMAQI
13th Jul 2026305 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026327 PMAQI
13th Jul 2026328 PMAQI
13th Jul 2026319 PMAQI
13th Jul 20263110 PMAQI
13th Jul 20263211 PMAQI
14th Jul 20263112 AMAQI
14th Jul 2026271 AMAQI
14th Jul 2026242 AMAQI
14th Jul 2026283 AMAQI
25°C23/32°C
14th Jul 2026234 AMAQI
14th Jul 2026305 AMAQI
14th Jul 2026286 AMAQI
14th Jul 2026307 AMAQI
14th Jul 2026268 AMAQI
14th Jul 2026309 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20262811 AMAQI
14th Jul 20262412 PMAQI
14th Jul 2026211 PMAQI
14th Jul 2026202 PMAQI
14th Jul 2026223 PMAQI
14th Jul 2026254 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026346 PMAQI
14th Jul 2026317 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026339 PMAQI
14th Jul 20262610 PMAQI
14th Jul 20262811 PMAQI
15th Jul 20263012 AMAQI
15th Jul 2026271 AMAQI
15th Jul 2026302 AMAQI
15th Jul 2026263 AMAQI
27°C22/32°C
15th Jul 2026244 AMAQI
15th Jul 2026285 AMAQI
15th Jul 2026226 AMAQI
15th Jul 2026287 AMAQI
15th Jul 2026278 AMAQI
15th Jul 2026279 AMAQI
15th Jul 20262610 AMAQI
15th Jul 20262011 AMAQI
15th Jul 20262012 PMAQI
15th Jul 2026181 PMAQI
15th Jul 2026192 PMAQI
15th Jul 2026313 PMAQI
15th Jul 2026484 PMAQI
15th Jul 2026465 PMAQI
15th Jul 2026466 PMAQI
15th Jul 2026517 PMAQI
15th Jul 2026488 PMAQI
15th Jul 2026449 PMAQI
15th Jul 20264810 PMAQI
15th Jul 20264411 PMAQI
16th Jul 20265012 AMAQI
16th Jul 2026551 AMAQI
16th Jul 2026582 AMAQI
16th Jul 2026543 AMAQI
29°C24/35°C
16th Jul 2026564 AMAQI
16th Jul 2026595 AMAQI
16th Jul 2026566 AMAQI
16th Jul 2026597 AMAQI
16th Jul 2026648 AMAQI
16th Jul 2026659 AMAQI
16th Jul 20265910 AMAQI
16th Jul 20265111 AMAQI
16th Jul 20266012 PMAQI
16th Jul 2026801 PMAQI
16th Jul 2026812 PMAQI
16th Jul 2026843 PMAQI
16th Jul 2026844 PMAQI
16th Jul 2026805 PMAQI
16th Jul 2026816 PMAQI
16th Jul 2026767 PMAQI
16th Jul 2026818 PMAQI
16th Jul 2026879 PMAQI
16th Jul 20267610 PMAQI
16th Jul 20266911 PMAQI
17th Jul 20267212 AMAQI
17th Jul 2026681 AMAQI
17th Jul 2026692 AMAQI
17th Jul 2026713 AMAQI
28°C25/32°C
17th Jul 2026704 AMAQI
17th Jul 2026695 AMAQI
17th Jul 2026676 AMAQI
17th Jul 2026687 AMAQI
17th Jul 2026628 AMAQI
17th Jul 2026629 AMAQI
17th Jul 20266310 AMAQI
17th Jul 20265511 AMAQI
17th Jul 20264912 PMAQI
17th Jul 2026461 PMAQI
17th Jul 2026502 PMAQI
17th Jul 2026483 PMAQI
17th Jul 2026484 PMAQI
17th Jul 2026445 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026257 PMAQI
17th Jul 2026318 PMAQI
17th Jul 2026259 PMAQI
17th Jul 20262110 PMAQI
17th Jul 20261911 PMAQI
18th Jul 20261912 AMAQI
18th Jul 2026231 AMAQI
18th Jul 2026192 AMAQI
18th Jul 202693 AMAQI
26°C24/29°C
18th Jul 2026124 AMAQI
18th Jul 202685 AMAQI
18th Jul 2026106 AMAQI
18th Jul 2026127 AMAQI
18th Jul 2026198 AMAQI
18th Jul 2026199 AMAQI
18th Jul 20261710 AMAQI
18th Jul 20262111 AMAQI
18th Jul 20262312 PMAQI
18th Jul 2026291 PMAQI
18th Jul 2026212 PMAQI
18th Jul 202683 PMAQI
18th Jul 202684 PMAQI
18th Jul 202685 PMAQI
18th Jul 202686 PMAQI
18th Jul 202687 PMAQI
18th Jul 202688 PMAQI
18th Jul 202689 PMAQI
18th Jul 2026810 PMAQI
18th Jul 20264811 PMAQI
19th Jul 20263212 AMAQI
19th Jul 2026101 AMAQI
19th Jul 2026122 AMAQI
19th Jul 2026103 AMAQI
26°C24/28°C
19th Jul 202684 AMAQI
19th Jul 202685 AMAQI
19th Jul 202686 AMAQI
19th Jul 202687 AMAQI
19th Jul 2026128 AMAQI
19th Jul 2026169 AMAQI
19th Jul 20262310 AMAQI
19th Jul 20262511 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026271 PMAQI
19th Jul 2026252 PMAQI
19th Jul 2026333 PMAQI
19th Jul 2026294 PMAQI
19th Jul 2026405 PMAQI
19th Jul 2026346 PMAQI
19th Jul 2026367 PMAQI
19th Jul 2026278 PMAQI
19th Jul 2026219 PMAQI
19th Jul 2026810 PMAQI
19th Jul 20261211 PMAQI
20th Jul 20261912 AMAQI
20th Jul 2026201 AMAQI
20th Jul 2026212 AMAQI
20th Jul 2026213 AMAQI
27°C23/31°C
20th Jul 2026214 AMAQI
20th Jul 2026215 AMAQI
20th Jul 2026226 AMAQI
20th Jul 2026187 AMAQI
20th Jul 2026198 AMAQI
20th Jul 2026239 AMAQI
20th Jul 20262310 AMAQI
20th Jul 20262711 AMAQI
20th Jul 20262712 PMAQI
20th Jul 2026251 PMAQI
20th Jul 2026252 PMAQI
20th Jul 2026273 PMAQI
20th Jul 2026274 PMAQI
20th Jul 2026275 PMAQI
20th Jul 2026256 PMAQI
20th Jul 2026347 PMAQI
20th Jul 2026408 PMAQI
20th Jul 2026409 PMAQI
20th Jul 20263610 PMAQI
20th Jul 20263611 PMAQI
21st Jul 20264012 AMAQI
21st Jul 2026381 AMAQI
21st Jul 2026402 AMAQI
21st Jul 2026423 AMAQI
30°C25/35°C
21st Jul 2026424 AMAQI
21st Jul 2026445 AMAQI
21st Jul 2026426 AMAQI
21st Jul 2026467 AMAQI
21st Jul 2026448 AMAQI
21st Jul 2026429 AMAQI
21st Jul 20265210 AMAQI
21st Jul 20265211 AMAQI
21st Jul 2026541 PMAQI
21st Jul 2026542 PMAQI
21st Jul 2026543 PMAQI
21st Jul 2026574 PMAQI
21st Jul 2026575 PMAQI
21st Jul 2026566 PMAQI
21st Jul 2026877 PMAQI
21st Jul 2026558 PMAQI
21st Jul 2026549 PMAQI
21st Jul 20265710 PMAQI
21st Jul 20265711 PMAQI
22nd Jul 20265812 AMAQI
22nd Jul 2026551 AMAQI
22nd Jul 2026542 AMAQI
22nd Jul 2026533 AMAQI
29°C25/35°C
22nd Jul 2026544 AMAQI
22nd Jul 2026535 AMAQI
22nd Jul 2026556 AMAQI
22nd Jul 2026527 AMAQI
22nd Jul 2026588 AMAQI
22nd Jul 2026559 AMAQI
22nd Jul 20265410 AMAQI
22nd Jul 20266211 AMAQI
22nd Jul 20266312 PMAQI
22nd Jul 2026671 PMAQI
22nd Jul 2026622 PMAQI
22nd Jul 2026653 PMAQI
22nd Jul 2026664 PMAQI
22nd Jul 2026715 PMAQI
22nd Jul 2026786 PMAQI
22nd Jul 2026727 PMAQI
22nd Jul 2026768 PMAQI
22nd Jul 2026849 PMAQI
22nd Jul 20268110 PMAQI
22nd Jul 20268311 PMAQI
23rd Jul 20268712 AMAQI
23rd Jul 2026831 AMAQI
23rd Jul 2026782 AMAQI
23rd Jul 2026723 AMAQI
29°C25/36°C
23rd Jul 2026744 AMAQI
23rd Jul 2026705 AMAQI
23rd Jul 2026716 AMAQI
23rd Jul 2026767 AMAQI
23rd Jul 2026768 AMAQI
23rd Jul 2026869 AMAQI
23rd Jul 20269210 AMAQI
23rd Jul 20269511 AMAQI
23rd Jul 20268512 PMAQI
23rd Jul 2026731 PMAQI
23rd Jul 2026742 PMAQI
23rd Jul 2026643 PMAQI
23rd Jul 2026444 PMAQI
23rd Jul 2026425 PMAQI
23rd Jul 2026426 PMAQI
23rd Jul 2026367 PMAQI
23rd Jul 2026298 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262710 PMAQI
23rd Jul 20262711 PMAQI
24th Jul 20263112 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026252 AMAQI
24th Jul 2026233 AMAQI
27°C24/33°C
24th Jul 2026294 AMAQI
24th Jul 2026235 AMAQI
24th Jul 2026196 AMAQI
24th Jul 2026197 AMAQI
24th Jul 2026218 AMAQI
24th Jul 2026279 AMAQI
24th Jul 20262710 AMAQI
24th Jul 20262911 AMAQI
24th Jul 20263112 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026232 PMAQI
24th Jul 2026173 PMAQI
24th Jul 2026234 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026216 PMAQI
24th Jul 2026237 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026279 PMAQI
24th Jul 20262710 PMAQI
24th Jul 20262311 PMAQI
25th Jul 20261712 AMAQI
25th Jul 2026141 AMAQI
25th Jul 2026122 AMAQI
25th Jul 2026103 AMAQI
24°C23/28°C
25th Jul 2026124 AMAQI
25th Jul 2026125 AMAQI
25th Jul 202686 AMAQI
25th Jul 202687 AMAQI
25th Jul 2026128 AMAQI
25th Jul 2026149 AMAQI
25th Jul 20261610 AMAQI
25th Jul 20262811 AMAQI
25th Jul 20263112 PMAQI
25th Jul 2026271 PMAQI
25th Jul 2026272 PMAQI
25th Jul 2026233 PMAQI
25th Jul 2026214 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026296 PMAQI
25th Jul 2026217 PMAQI
25th Jul 2026338 PMAQI
25th Jul 2026389 PMAQI
25th Jul 20263110 PMAQI
25th Jul 20262911 PMAQI
26th Jul 20263112 AMAQI
26th Jul 2026311 AMAQI
26th Jul 2026292 AMAQI
26th Jul 2026253 AMAQI
25°C22/28°C
26th Jul 2026254 AMAQI
26th Jul 2026295 AMAQI
26th Jul 2026256 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262510 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262312 PMAQI
26th Jul 2026231 PMAQI
26th Jul 2026232 PMAQI
26th Jul 2026213 PMAQI
26th Jul 2026214 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026298 PMAQI
26th Jul 2026239 PMAQI
26th Jul 20262110 PMAQI
26th Jul 20262511 PMAQI
27th Jul 20262112 AMAQI
27th Jul 2026231 AMAQI
27th Jul 2026292 AMAQI
27th Jul 2026213 AMAQI
25°C23/30°C
27th Jul 2026254 AMAQI
27th Jul 2026275 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026367 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026259 AMAQI
27th Jul 20262310 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262512 PMAQI
27th Jul 2026291 PMAQI
27th Jul 2026252 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026296 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026238 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20262110 PMAQI
27th Jul 20262111 PMAQI
28th Jul 20262112 AMAQI
28th Jul 2026211 AMAQI
28th Jul 2026292 AMAQI
28th Jul 2026213 AMAQI
24°C21/27°C
28th Jul 2026254 AMAQI
28th Jul 2026235 AMAQI
28th Jul 2026216 AMAQI
28th Jul 2026257 AMAQI
28th Jul 2026258 AMAQI
28th Jul 2026259 AMAQI
28th Jul 20262510 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026231 PMAQI
28th Jul 2026252 PMAQI
28th Jul 2026273 PMAQI
28th Jul 2026294 PMAQI
28th Jul 2026445 PMAQI
28th Jul 2026366 PMAQI
28th Jul 2026387 PMAQI
28th Jul 2026428 PMAQI
28th Jul 2026469 PMAQI
28th Jul 20263310 PMAQI
28th Jul 20264211 PMAQI
29th Jul 20263612 AMAQI
29th Jul 2026341 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026313 AMAQI
24°C21/27°C
29th Jul 2026314 AMAQI
29th Jul 2026405 AMAQI
29th Jul 2026486 AMAQI
29th Jul 2026427 AMAQI
29th Jul 2026368 AMAQI
29th Jul 2026319 AMAQI
29th Jul 20263110 AMAQI
29th Jul 20262911 AMAQI
29th Jul 20262712 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026212 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026255 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026278 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20262310 PMAQI
29th Jul 20262311 PMAQI
30th Jul 20262712 AMAQI
30th Jul 2026271 AMAQI
30th Jul 2026292 AMAQI
30th Jul 2026293 AMAQI
26°C22/31°C
30th Jul 2026294 AMAQI
30th Jul 2026275 AMAQI
30th Jul 2026296 AMAQI
30th Jul 2026317 AMAQI
30th Jul 2026318 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262510 AMAQI
30th Jul 20262911 AMAQI
30th Jul 20263112 PMAQI
30th Jul 2026331 PMAQI
30th Jul 2026312 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026294 PMAQI
30th Jul 2026315 PMAQI
30th Jul 2026386 PMAQI
30th Jul 2026557 PMAQI
30th Jul 2026538 PMAQI
30th Jul 2026569 PMAQI
30th Jul 20264610 PMAQI
30th Jul 20265411 PMAQI
31st Jul 20264912 AMAQI
31st Jul 2026491 AMAQI
31st Jul 2026502 AMAQI
31st Jul 2026503 AMAQI
28°C25/34°C
31st Jul 2026484 AMAQI
31st Jul 2026425 AMAQI
31st Jul 2026466 AMAQI
31st Jul 2026367 AMAQI
31st Jul 2026408 AMAQI
31st Jul 2026449 AMAQI
31st Jul 20264210 AMAQI
31st Jul 20265211 AMAQI
31st Jul 20263612 PMAQI
31st Jul 2026441 PMAQI
31st Jul 2026482 PMAQI
31st Jul 2026483 PMAQI
31st Jul 2026464 PMAQI
31st Jul 2026495 PMAQI
31st Jul 2026486 PMAQI
31st Jul 2026407 PMAQI
31st Jul 2026468 PMAQI
31st Jul 2026409 PMAQI
31st Jul 20264210 PMAQI
31st Jul 20264411 PMAQI
1st Aug 20264812 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026492 AMAQI
1st Aug 2026463 AMAQI
26°C24/30°C
1st Aug 2026404 AMAQI
1st Aug 2026465 AMAQI
1st Aug 2026506 AMAQI
1st Aug 2026467 AMAQI
1st Aug 2026518 AMAQI
1st Aug 2026559 AMAQI
1st Aug 20265610 AMAQI
1st Aug 20265211 AMAQI
1st Aug 20265512 PMAQI
1st Aug 2026601 PMAQI
1st Aug 2026562 PMAQI
1st Aug 2026583 PMAQI
1st Aug 2026574 PMAQI
1st Aug 2026595 PMAQI
1st Aug 2026596 PMAQI
1st Aug 2026607 PMAQI
1st Aug 2026628 PMAQI
1st Aug 2026659 PMAQI
1st Aug 20266910 PMAQI
1st Aug 20266411 PMAQI
2nd Aug 20267012 AMAQI
2nd Aug 2026641 AMAQI
2nd Aug 2026652 AMAQI
2nd Aug 2026673 AMAQI
27°C23/33°C
2nd Aug 2026684 AMAQI
2nd Aug 2026765 AMAQI
2nd Aug 2026726 AMAQI
2nd Aug 2026707 AMAQI
2nd Aug 2026548 AMAQI
2nd Aug 2026539 AMAQI
2nd Aug 20264410 AMAQI
2nd Aug 20263111 AMAQI
2nd Aug 20264412 PMAQI
2nd Aug 2026381 PMAQI
2nd Aug 2026382 PMAQI
2nd Aug 2026363 PMAQI
2nd Aug 2026294 PMAQI
2nd Aug 2026235 PMAQI
2nd Aug 202696 PMAQI
2nd Aug 2026127 PMAQI
2nd Aug 2026128 PMAQI
2nd Aug 202689 PMAQI
2nd Aug 2026610 PMAQI
2nd Aug 2026811 PMAQI
3rd Aug 2026812 AMAQI
3rd Aug 202681 AMAQI
3rd Aug 202682 AMAQI
3rd Aug 202683 AMAQI
25°C22/29°C
3rd Aug 202684 AMAQI
3rd Aug 202685 AMAQI
3rd Aug 202686 AMAQI
3rd Aug 202687 AMAQI
3rd Aug 2026108 AMAQI
3rd Aug 202699 AMAQI
3rd Aug 20261010 AMAQI
3rd Aug 20261011 AMAQI
3rd Aug 20261712 PMAQI
3rd Aug 2026191 PMAQI
3rd Aug 2026172 PMAQI
3rd Aug 2026193 PMAQI
3rd Aug 2026174 PMAQI
3rd Aug 2026215 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026197 PMAQI
3rd Aug 2026258 PMAQI
3rd Aug 2026179 PMAQI
3rd Aug 20261610 PMAQI
3rd Aug 20261411 PMAQI
4th Aug 20261912 AMAQI
4th Aug 2026191 AMAQI
4th Aug 2026252 AMAQI
4th Aug 2026253 AMAQI
23°C21/25°C
4th Aug 2026144 AMAQI
4th Aug 2026195 AMAQI
4th Aug 2026216 AMAQI
4th Aug 2026217 AMAQI
4th Aug 2026218 AMAQI
4th Aug 2026219 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20262111 AMAQI
4th Aug 20262112 PMAQI
4th Aug 2026211 PMAQI
4th Aug 2026212 PMAQI
4th Aug 2026253 PMAQI
4th Aug 2026214 PMAQI
4th Aug 2026215 PMAQI
4th Aug 2026216 PMAQI
4th Aug 2026237 PMAQI
4th Aug 2026258 PMAQI
4th Aug 2026259 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20262511 PMAQI
5th Aug 20262312 AMAQI
5th Aug 2026231 AMAQI
5th Aug 2026232 AMAQI
5th Aug 2026213 AMAQI
22°C19/26°C
5th Aug 2026214 AMAQI
5th Aug 2026215 AMAQI
5th Aug 2026256 AMAQI
5th Aug 2026217 AMAQI
5th Aug 2026218 AMAQI
5th Aug 2026219 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262311 AMAQI
5th Aug 20262112 PMAQI
5th Aug 2026231 PMAQI
5th Aug 2026232 PMAQI
5th Aug 2026253 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026235 PMAQI
5th Aug 2026216 PMAQI
5th Aug 2026217 PMAQI
5th Aug 2026218 PMAQI
5th Aug 2026219 PMAQI
5th Aug 20262110 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262112 AMAQI
6th Aug 2026211 AMAQI
6th Aug 2026232 AMAQI
6th Aug 2026233 AMAQI
24°C21/28°C
6th Aug 2026214 AMAQI
6th Aug 2026235 AMAQI
6th Aug 2026256 AMAQI
6th Aug 2026237 AMAQI
6th Aug 2026238 AMAQI
6th Aug 2026259 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20263211 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026291 PMAQI
6th Aug 2026292 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026304 PMAQI
6th Aug 2026215 PMAQI
6th Aug 2026216 PMAQI
6th Aug 2026217 PMAQI
6th Aug 2026218 PMAQI
6th Aug 2026219 PMAQI
6th Aug 20262110 PMAQI
6th Aug 20262111 PMAQI
7th Aug 20262112 AMAQI
7th Aug 2026211 AMAQI
7th Aug 2026212 AMAQI
7th Aug 2026213 AMAQI
27°C24/31°C
7th Aug 2026324 AMAQI
7th Aug 2026325 AMAQI
7th Aug 2026256 AMAQI
7th Aug 2026257 AMAQI
7th Aug 2026258 AMAQI
7th Aug 2026259 AMAQI
7th Aug 20262510 AMAQI
7th Aug 20262511 AMAQI
7th Aug 20263612 PMAQI
7th Aug 2026421 PMAQI
7th Aug 2026232 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026214 PMAQI
7th Aug 2026215 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026217 PMAQI
7th Aug 2026218 PMAQI
7th Aug 2026239 PMAQI
7th Aug 20262310 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026311 AMAQI
8th Aug 2026362 AMAQI
8th Aug 2026323 AMAQI
28°C24/32°C
8th Aug 2026274 AMAQI
8th Aug 2026275 AMAQI
8th Aug 2026256 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026278 AMAQI
8th Aug 2026259 AMAQI
8th Aug 20262310 AMAQI
8th Aug 20262111 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026211 PMAQI
8th Aug 2026252 PMAQI
8th Aug 2026233 PMAQI
8th Aug 2026214 PMAQI
8th Aug 2026235 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026217 PMAQI
8th Aug 2026218 PMAQI
8th Aug 2026219 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20262511 PMAQI
9th Aug 20262712 AMAQI
9th Aug 2026301 AMAQI
9th Aug 2026212 AMAQI
9th Aug 2026423 AMAQI
27°C24/32°C
9th Aug 2026424 AMAQI
4 AM9th Aug 2026385 AMAQI
9th Aug 2026406 AMAQI
9th Aug 2026297 AMAQI
9th Aug 2026278 AMAQI
9th Aug 2026259 AMAQI
9th Aug 20262110 AMAQI
9th Aug 20262111 AMAQI
11 AM9th Aug 20262312 PMAQI
9th Aug 2026311 PMAQI
9th Aug 2026332 PMAQI
9th Aug 2026383 PMAQI
9th Aug 2026364 PMAQI
9th Aug 2026445 PMAQI
9th Aug 2026556 PMAQI
6 PM9th Aug 2026407 PMAQI
9th Aug 2026388 PMAQI
9th Aug 2026409 PMAQI
9th Aug 20264410 PMAQI
9th Aug 20262911 PMAQI
11 PM3 AM
26°C24/30°C
Day time
Avg. Highest Time
9 AM - 6 PM
33AQI
10 hours / Day
300 hours / Month
Avg. Lowest Time
4 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 6 PM (Avg. 33), while the lowest AQI was between 4 AM to 4 AM (Avg. 32).
Night time
Avg. Highest Time
7 PM - 9 PM
35AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
3 AM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 9 PM (Avg. 35), while the lowest AQI was between 3 AM to 3 AM (Avg. 32).
2026 Days Vs Air Quality
Ishii, Kasama, Ibaraki, Japan
2026
85%
188
15%
33
Total number of days with different AQI categories in last 222 days in 2026 (143 days remaining)
Good
188 DaysModerate
33 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% of 222 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
Ishii, Kasama, 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
18AQI (US)
18AQI (US)
2nd January 2026
17AQI (US)
17AQI (US)
3rd January 2026
15AQI (US)
15AQI (US)
4th January 2026
23AQI (US)
23AQI (US)
5th January 2026
38AQI (US)
38AQI (US)
6th January 2026
23AQI (US)
23AQI (US)
7th January 2026
31AQI (US)
31AQI (US)
8th January 2026
40AQI (US)
40AQI (US)
9th January 2026
23AQI (US)
23AQI (US)
10th January 2026
41AQI (US)
41AQI (US)
11th January 2026
28AQI (US)
28AQI (US)
12th January 2026
15AQI (US)
15AQI (US)
13th January 2026
36AQI (US)
36AQI (US)
14th January 2026
12AQI (US)
12AQI (US)
15th January 2026
30AQI (US)
30AQI (US)
16th January 2026
49AQI (US)
49AQI (US)
17th January 2026
47AQI (US)
47AQI (US)
18th January 2026
28AQI (US)
28AQI (US)
19th January 2026
41AQI (US)
41AQI (US)
20th January 2026
30AQI (US)
30AQI (US)
21st January 2026
20AQI (US)
20AQI (US)
22nd January 2026
20AQI (US)
20AQI (US)
23rd January 2026
34AQI (US)
34AQI (US)
24th January 2026
37AQI (US)
37AQI (US)
25th January 2026
41AQI (US)
41AQI (US)
26th January 2026
18AQI (US)
18AQI (US)
27th January 2026
29AQI (US)
29AQI (US)
28th January 2026
28AQI (US)
28AQI (US)
29th January 2026
25AQI (US)
25AQI (US)
30th January 2026
24AQI (US)
24AQI (US)
31st January 2026
36AQI (US)
36AQI (US)
1st February 2026
38AQI (US)
38AQI (US)
2nd February 2026
15AQI (US)
15AQI (US)
3rd February 2026
19AQI (US)
19AQI (US)
4th February 2026
24AQI (US)
24AQI (US)
5th February 2026
38AQI (US)
38AQI (US)
6th February 2026
46AQI (US)
46AQI (US)
7th February 2026
12AQI (US)
12AQI (US)
8th February 2026
12AQI (US)
12AQI (US)
9th February 2026
34AQI (US)
34AQI (US)
10th February 2026
25AQI (US)
25AQI (US)
11th February 2026
51AQI (US)
51AQI (US)
12th February 2026
31AQI (US)
31AQI (US)
13th February 2026
38AQI (US)
38AQI (US)
14th February 2026
68AQI (US)
68AQI (US)
15th February 2026
72AQI (US)
72AQI (US)
16th February 2026
51AQI (US)
51AQI (US)
17th February 2026
16AQI (US)
16AQI (US)
18th February 2026
31AQI (US)
31AQI (US)
19th February 2026
29AQI (US)
29AQI (US)
20th February 2026
31AQI (US)
31AQI (US)
21st February 2026
47AQI (US)
47AQI (US)
22nd February 2026
37AQI (US)
37AQI (US)
23rd February 2026
41AQI (US)
41AQI (US)
24th February 2026
26AQI (US)
26AQI (US)
25th February 2026
30AQI (US)
30AQI (US)
26th February 2026
9AQI (US)
9AQI (US)
27th February 2026
39AQI (US)
39AQI (US)
28th February 2026
45AQI (US)
45AQI (US)
1st March 2026
40AQI (US)
40AQI (US)
2nd March 2026
88AQI (US)
88AQI (US)
3rd March 2026
45AQI (US)
45AQI (US)
4th March 2026
62AQI (US)
62AQI (US)
5th March 2026
63AQI (US)
63AQI (US)
6th March 2026
51AQI (US)
51AQI (US)
7th March 2026
40AQI (US)
40AQI (US)
8th March 2026
15AQI (US)
15AQI (US)
9th March 2026
33AQI (US)
33AQI (US)
10th March 2026
56AQI (US)
56AQI (US)
11th March 2026
58AQI (US)
58AQI (US)
12th March 2026
67AQI (US)
67AQI (US)
13th March 2026
42AQI (US)
42AQI (US)
14th March 2026
49AQI (US)
49AQI (US)
15th March 2026
60AQI (US)
60AQI (US)
16th March 2026
59AQI (US)
59AQI (US)
17th March 2026
58AQI (US)
58AQI (US)
18th March 2026
58AQI (US)
58AQI (US)
19th March 2026
38AQI (US)
38AQI (US)
20th March 2026
26AQI (US)
26AQI (US)
21st March 2026
38AQI (US)
38AQI (US)
22nd March 2026
50AQI (US)
50AQI (US)
23rd March 2026
52AQI (US)
52AQI (US)
24th March 2026
59AQI (US)
59AQI (US)
25th March 2026
44AQI (US)
44AQI (US)
26th March 2026
20AQI (US)
20AQI (US)
27th March 2026
17AQI (US)
17AQI (US)
28th March 2026
47AQI (US)
47AQI (US)
29th March 2026
52AQI (US)
52AQI (US)
30th March 2026
56AQI (US)
56AQI (US)
31st March 2026
31AQI (US)
31AQI (US)
1st April 2026
14AQI (US)
14AQI (US)
2nd April 2026
28AQI (US)
28AQI (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
20AQI (US)
20AQI (US)
7th April 2026
41AQI (US)
41AQI (US)
8th April 2026
19AQI (US)
19AQI (US)
9th April 2026
29AQI (US)
29AQI (US)
10th April 2026
46AQI (US)
46AQI (US)
11th April 2026
36AQI (US)
36AQI (US)
12th April 2026
30AQI (US)
30AQI (US)
13th April 2026
44AQI (US)
44AQI (US)
14th April 2026
36AQI (US)
36AQI (US)
15th April 2026
39AQI (US)
39AQI (US)
16th April 2026
31AQI (US)
31AQI (US)
17th April 2026
34AQI (US)
34AQI (US)
18th April 2026
35AQI (US)
35AQI (US)
19th April 2026
40AQI (US)
40AQI (US)
20th April 2026
36AQI (US)
36AQI (US)
21st April 2026
39AQI (US)
39AQI (US)
22nd April 2026
45AQI (US)
45AQI (US)
23rd April 2026
35AQI (US)
35AQI (US)
24th April 2026
31AQI (US)
31AQI (US)
25th April 2026
44AQI (US)
44AQI (US)
26th April 2026
49AQI (US)
49AQI (US)
27th April 2026
48AQI (US)
48AQI (US)
28th April 2026
40AQI (US)
40AQI (US)
29th April 2026
37AQI (US)
37AQI (US)
30th April 2026
39AQI (US)
39AQI (US)
1st May 2026
47AQI (US)
47AQI (US)
2nd May 2026
50AQI (US)
50AQI (US)
3rd May 2026
41AQI (US)
41AQI (US)
4th May 2026
28AQI (US)
28AQI (US)
5th May 2026
17AQI (US)
17AQI (US)
6th May 2026
34AQI (US)
34AQI (US)
7th May 2026
33AQI (US)
33AQI (US)
8th May 2026
26AQI (US)
26AQI (US)
9th May 2026
24AQI (US)
24AQI (US)
10th May 2026
29AQI (US)
29AQI (US)
11th May 2026
30AQI (US)
30AQI (US)
12th May 2026
37AQI (US)
37AQI (US)
13th May 2026
45AQI (US)
45AQI (US)
14th May 2026
37AQI (US)
37AQI (US)
15th May 2026
34AQI (US)
34AQI (US)
16th May 2026
84AQI (US)
84AQI (US)
17th May 2026
68AQI (US)
68AQI (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
58AQI (US)
58AQI (US)
22nd May 2026
62AQI (US)
62AQI (US)
23rd May 2026
53AQI (US)
53AQI (US)
24th May 2026
59AQI (US)
59AQI (US)
25th May 2026
47AQI (US)
47AQI (US)
26th May 2026
38AQI (US)
38AQI (US)
27th May 2026
25AQI (US)
25AQI (US)
28th May 2026
21AQI (US)
21AQI (US)
29th May 2026
15AQI (US)
15AQI (US)
30th May 2026
24AQI (US)
24AQI (US)
31st May 2026
27AQI (US)
27AQI (US)
1st June 2026
29AQI (US)
29AQI (US)
2nd June 2026
33AQI (US)
33AQI (US)
3rd June 2026
12AQI (US)
12AQI (US)
4th June 2026
11AQI (US)
11AQI (US)
5th June 2026
21AQI (US)
21AQI (US)
6th June 2026
20AQI (US)
20AQI (US)
7th June 2026
21AQI (US)
21AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
23AQI (US)
23AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
24AQI (US)
24AQI (US)
12th June 2026
24AQI (US)
24AQI (US)
13th June 2026
26AQI (US)
26AQI (US)
14th June 2026
39AQI (US)
39AQI (US)
15th June 2026
13AQI (US)
13AQI (US)
16th June 2026
17AQI (US)
17AQI (US)
17th June 2026
24AQI (US)
24AQI (US)
18th June 2026
24AQI (US)
24AQI (US)
19th June 2026
30AQI (US)
30AQI (US)
20th June 2026
21AQI (US)
21AQI (US)
21st June 2026
20AQI (US)
20AQI (US)
22nd June 2026
19AQI (US)
19AQI (US)
23rd June 2026
21AQI (US)
21AQI (US)
24th June 2026
21AQI (US)
21AQI (US)
25th June 2026
27AQI (US)
27AQI (US)
26th June 2026
29AQI (US)
29AQI (US)
27th June 2026
26AQI (US)
26AQI (US)
28th June 2026
29AQI (US)
29AQI (US)
29th June 2026
27AQI (US)
27AQI (US)
30th June 2026
23AQI (US)
23AQI (US)
1st July 2026
27AQI (US)
27AQI (US)
2nd July 2026
18AQI (US)
18AQI (US)
3rd July 2026
18AQI (US)
18AQI (US)
4th July 2026
34AQI (US)
34AQI (US)
5th July 2026
27AQI (US)
27AQI (US)
6th July 2026
27AQI (US)
27AQI (US)
7th July 2026
26AQI (US)
26AQI (US)
8th July 2026
23AQI (US)
23AQI (US)
9th July 2026
24AQI (US)
24AQI (US)
10th July 2026
25AQI (US)
25AQI (US)
11th July 2026
27AQI (US)
27AQI (US)
12th July 2026
27AQI (US)
27AQI (US)
13th July 2026
29AQI (US)
29AQI (US)
14th July 2026
27AQI (US)
27AQI (US)
15th July 2026
32AQI (US)
32AQI (US)
16th July 2026
68AQI (US)
68AQI (US)
17th July 2026
51AQI (US)
51AQI (US)
18th July 2026
16AQI (US)
16AQI (US)
19th July 2026
20AQI (US)
20AQI (US)
20th July 2026
26AQI (US)
26AQI (US)
21st July 2026
51AQI (US)
51AQI (US)
22nd July 2026
64AQI (US)
64AQI (US)
23rd July 2026
64AQI (US)
64AQI (US)
24th July 2026
25AQI (US)
25AQI (US)
25th July 2026
21AQI (US)
21AQI (US)
26th July 2026
26AQI (US)
26AQI (US)
27th July 2026
25AQI (US)
25AQI (US)
28th July 2026
29AQI (US)
29AQI (US)
29th July 2026
30AQI (US)
30AQI (US)
30th July 2026
34AQI (US)
34AQI (US)
31st July 2026
45AQI (US)
45AQI (US)
1st August 2026
54AQI (US)
54AQI (US)
2nd August 2026
42AQI (US)
42AQI (US)
3rd August 2026
14AQI (US)
14AQI (US)
4th August 2026
22AQI (US)
22AQI (US)
5th August 2026
22AQI (US)
22AQI (US)
6th August 2026
24AQI (US)
24AQI (US)
7th August 2026
25AQI (US)
25AQI (US)
8th August 2026
25AQI (US)
25AQI (US)
9th August 2026
34AQI (US)
34AQI (US)
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
29AQI (US)
34AQI (US)
48AQI (US)
36AQI (US)
41AQI (US)
23AQI (US)
32AQI (US)
29AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202634AQI (US)
31
24
4
16
15
30
23
8
30
26
5
8
1
188
33
Highest AQI (US) recorded in
March48AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202540AQI (US)
30
1
28
27
4
26
4
29
2
27
3
24
7
27
4
30
16
15
19
11
21
10
304
61
Highest AQI (US) recorded in
July48AQI (US)
Lowest AQI (US) recorded in
September33AQI (US)
202437AQI (US)
16
11
1
29
1
18
13
31
20
9
29
2
27
3
31
212
29
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202337AQI (US)
26
3
24
4
26
4
3
24
7
103
18
Highest AQI (US) recorded in
March39AQI (US)
Lowest AQI (US) recorded in
November27AQI (US)
202233AQI (US)
30
19
2
28
3
16
1
28
3
24
6
17
5
1
29
31
30
31
284
20
Highest AQI (US) recorded in
March40AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202128AQI (US)
30
1
26
2
26
2
30
30
1
26
4
31
31
30
31
30
29
2
350
12
Highest AQI (US) recorded in
June35AQI (US)
Lowest AQI (US) recorded in
April24AQI (US)
202027AQI (US)
11
21
18
27
3
31
26
5
18
1
31
23
1
7
1
213
11
Highest AQI (US) recorded in
August36AQI (US)
Lowest AQI (US) recorded in
April21AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
40AQI (US)Least Polluted Year Recorded
2020(Avg.)
27AQI (US)Ishii's annual 2026 AQI (US) (34) shows an average percentage change of 3.1% (worsened AQI (US)) compared to previous years: 2020 (27), 2021 (28), 2022 (33), 2023 (37), 2024 (37), 2025 (40).
