Hitachi, 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
Hitachi, Ibaraki, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Aug 2023
58AQILowest AQI recorded on
8th Aug 2021
10AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Hitachi, Ibaraki, Japan
AQI
Day
Night
.
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
12PM5th Aug
59AQI
Avg. Lowest Time
12AM6th Aug
38AQI
In the last 24 hours,
Hitachi's AQI reached its highest point of 59 at 12 PM during the Night, while the lowest point, 38, was recorded at 12 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hitachi, Ibaraki, Japan
JulAug
07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th
Day
Night
7th Jul 2025524 AMAQI
7th Jul 2025545 AMAQI
7th Jul 2025536 AMAQI
7th Jul 2025547 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025869 AMAQI
7th Jul 20259710 AMAQI
7th Jul 202511411 AMAQI
7th Jul 202511812 PMAQI
7th Jul 2025961 PMAQI
7th Jul 2025962 PMAQI
7th Jul 20251053 PMAQI
7th Jul 2025954 PMAQI
7th Jul 2025905 PMAQI
7th Jul 2025906 PMAQI
7th Jul 2025897 PMAQI
7th Jul 2025858 PMAQI
7th Jul 2025669 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256311 PMAQI
8th Jul 20256012 AMAQI
8th Jul 2025541 AMAQI
8th Jul 2025542 AMAQI
8th Jul 2025533 AMAQI
26°C24/29°C
8th Jul 2025564 AMAQI
8th Jul 2025625 AMAQI
8th Jul 2025626 AMAQI
8th Jul 2025627 AMAQI
8th Jul 2025628 AMAQI
8th Jul 2025939 AMAQI
8th Jul 202510510 AMAQI
8th Jul 202511011 AMAQI
8th Jul 202510612 PMAQI
8th Jul 2025911 PMAQI
8th Jul 2025882 PMAQI
8th Jul 2025863 PMAQI
8th Jul 2025854 PMAQI
8th Jul 2025825 PMAQI
8th Jul 2025786 PMAQI
8th Jul 2025787 PMAQI
8th Jul 2025738 PMAQI
8th Jul 2025649 PMAQI
8th Jul 20256610 PMAQI
8th Jul 20256511 PMAQI
9th Jul 20256412 AMAQI
9th Jul 2025581 AMAQI
9th Jul 2025582 AMAQI
9th Jul 2025583 AMAQI
26°C25/29°C
9th Jul 2025594 AMAQI
9th Jul 2025645 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025647 AMAQI
9th Jul 2025648 AMAQI
9th Jul 20251099 AMAQI
9th Jul 202511810 AMAQI
9th Jul 202510811 AMAQI
9th Jul 202510012 PMAQI
9th Jul 2025961 PMAQI
9th Jul 2025942 PMAQI
9th Jul 2025903 PMAQI
9th Jul 2025724 PMAQI
9th Jul 2025565 PMAQI
9th Jul 2025576 PMAQI
9th Jul 2025587 PMAQI
9th Jul 2025588 PMAQI
9th Jul 2025589 PMAQI
9th Jul 20255810 PMAQI
9th Jul 20255611 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025601 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025613 AMAQI
27°C24/29°C
10th Jul 2025634 AMAQI
10th Jul 2025685 AMAQI
10th Jul 2025666 AMAQI
10th Jul 2025677 AMAQI
10th Jul 2025668 AMAQI
10th Jul 2025629 AMAQI
10th Jul 20255810 AMAQI
10th Jul 20255011 AMAQI
10th Jul 20254312 PMAQI
10th Jul 2025451 PMAQI
10th Jul 2025502 PMAQI
10th Jul 2025453 PMAQI
10th Jul 2025414 PMAQI
10th Jul 2025355 PMAQI
10th Jul 2025346 PMAQI
10th Jul 2025287 PMAQI
10th Jul 2025348 PMAQI
10th Jul 2025519 PMAQI
10th Jul 20255210 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255512 AMAQI
11th Jul 2025601 AMAQI
11th Jul 2025622 AMAQI
11th Jul 2025613 AMAQI
23°C21/25°C
11th Jul 2025614 AMAQI
11th Jul 2025605 AMAQI
11th Jul 2025596 AMAQI
11th Jul 2025597 AMAQI
11th Jul 2025608 AMAQI
11th Jul 2025279 AMAQI
11th Jul 20251610 AMAQI
11th Jul 20251711 AMAQI
11th Jul 20252012 PMAQI
11th Jul 2025271 PMAQI
11th Jul 2025292 PMAQI
11th Jul 2025293 PMAQI
11th Jul 2025294 PMAQI
11th Jul 2025305 PMAQI
11th Jul 2025356 PMAQI
11th Jul 2025377 PMAQI
11th Jul 2025448 PMAQI
11th Jul 2025529 PMAQI
11th Jul 20255210 PMAQI
11th Jul 20255211 PMAQI
12th Jul 20255412 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025592 AMAQI
12th Jul 2025583 AMAQI
21°C20/23°C
12th Jul 2025584 AMAQI
12th Jul 2025555 AMAQI
12th Jul 2025556 AMAQI
12th Jul 2025557 AMAQI
12th Jul 2025558 AMAQI
12th Jul 2025349 AMAQI
12th Jul 20253010 AMAQI
12th Jul 20252911 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025351 PMAQI
12th Jul 2025352 PMAQI
12th Jul 2025353 PMAQI
12th Jul 2025414 PMAQI
12th Jul 2025405 PMAQI
12th Jul 2025356 PMAQI
12th Jul 2025327 PMAQI
12th Jul 2025398 PMAQI
12th Jul 2025509 PMAQI
12th Jul 20255110 PMAQI
12th Jul 20255111 PMAQI
13th Jul 20255012 AMAQI
13th Jul 2025551 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025563 AMAQI
21°C19/22°C
13th Jul 2025564 AMAQI
13th Jul 2025545 AMAQI
13th Jul 2025536 AMAQI
13th Jul 2025537 AMAQI
13th Jul 2025538 AMAQI
13th Jul 2025429 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20254311 AMAQI
13th Jul 20254412 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025472 PMAQI
13th Jul 2025483 PMAQI
13th Jul 2025384 PMAQI
13th Jul 2025395 PMAQI
13th Jul 2025376 PMAQI
13th Jul 2025387 PMAQI
13th Jul 2025388 PMAQI
13th Jul 2025469 PMAQI
13th Jul 20254510 PMAQI
13th Jul 20254411 PMAQI
14th Jul 20254512 AMAQI
14th Jul 2025531 AMAQI
14th Jul 2025532 AMAQI
14th Jul 2025543 AMAQI
23°C20/26°C
14th Jul 2025544 AMAQI
14th Jul 2025525 AMAQI
14th Jul 2025526 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025528 AMAQI
14th Jul 2025269 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20251611 AMAQI
14th Jul 20251612 PMAQI
14th Jul 2025251 PMAQI
14th Jul 2025342 PMAQI
14th Jul 2025463 PMAQI
14th Jul 2025514 PMAQI
14th Jul 2025575 PMAQI
14th Jul 2025606 PMAQI
14th Jul 2025557 PMAQI
14th Jul 2025468 PMAQI
14th Jul 2025389 PMAQI
14th Jul 20254010 PMAQI
14th Jul 20253811 PMAQI
15th Jul 20254012 AMAQI
15th Jul 2025511 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025523 AMAQI
24°C22/26°C
15th Jul 2025524 AMAQI
15th Jul 2025505 AMAQI
15th Jul 2025506 AMAQI
15th Jul 2025517 AMAQI
15th Jul 2025508 AMAQI
15th Jul 2025319 AMAQI
15th Jul 20252310 AMAQI
15th Jul 20252111 AMAQI
15th Jul 20252412 PMAQI
15th Jul 2025291 PMAQI
15th Jul 2025272 PMAQI
15th Jul 2025273 PMAQI
15th Jul 2025244 PMAQI
15th Jul 2025325 PMAQI
15th Jul 2025396 PMAQI
15th Jul 2025397 PMAQI
15th Jul 2025448 PMAQI
15th Jul 2025489 PMAQI
15th Jul 20254510 PMAQI
15th Jul 20254011 PMAQI
16th Jul 20254012 AMAQI
16th Jul 2025501 AMAQI
16th Jul 2025502 AMAQI
16th Jul 2025523 AMAQI
24°C24/25°C
16th Jul 2025504 AMAQI
16th Jul 2025485 AMAQI
16th Jul 2025476 AMAQI
16th Jul 2025457 AMAQI
16th Jul 2025478 AMAQI
16th Jul 2025489 AMAQI
16th Jul 20254910 AMAQI
16th Jul 20254611 AMAQI
16th Jul 20254612 PMAQI
16th Jul 2025351 PMAQI
16th Jul 2025342 PMAQI
16th Jul 2025233 PMAQI
16th Jul 2025274 PMAQI
16th Jul 2025275 PMAQI
16th Jul 2025316 PMAQI
16th Jul 2025297 PMAQI
16th Jul 2025328 PMAQI
16th Jul 2025409 PMAQI
16th Jul 20253610 PMAQI
16th Jul 20253911 PMAQI
17th Jul 20253912 AMAQI
17th Jul 2025461 AMAQI
17th Jul 2025492 AMAQI
17th Jul 2025483 AMAQI
25°C24/25°C
17th Jul 2025474 AMAQI
17th Jul 2025475 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025467 AMAQI
17th Jul 2025478 AMAQI
17th Jul 2025389 AMAQI
17th Jul 20253310 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20254112 PMAQI
17th Jul 2025421 PMAQI
17th Jul 2025392 PMAQI
17th Jul 2025423 PMAQI
17th Jul 2025424 PMAQI
17th Jul 2025355 PMAQI
17th Jul 2025436 PMAQI
17th Jul 2025517 PMAQI
17th Jul 2025488 PMAQI
17th Jul 2025429 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254211 PMAQI
18th Jul 20254212 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025472 AMAQI
18th Jul 2025473 AMAQI
26°C24/28°C
18th Jul 2025464 AMAQI
18th Jul 2025445 AMAQI
18th Jul 2025446 AMAQI
18th Jul 2025447 AMAQI
18th Jul 2025438 AMAQI
18th Jul 2025369 AMAQI
18th Jul 20253510 AMAQI
18th Jul 20253411 AMAQI
18th Jul 20253212 PMAQI
18th Jul 2025361 PMAQI
18th Jul 2025402 PMAQI
18th Jul 2025363 PMAQI
18th Jul 2025364 PMAQI
18th Jul 2025345 PMAQI
18th Jul 2025376 PMAQI
18th Jul 2025387 PMAQI
18th Jul 2025408 PMAQI
18th Jul 2025439 PMAQI
18th Jul 20254210 PMAQI
18th Jul 20253711 PMAQI
19th Jul 20253612 AMAQI
19th Jul 2025441 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025453 AMAQI
25°C23/28°C
19th Jul 2025444 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025436 AMAQI
19th Jul 2025437 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025349 AMAQI
19th Jul 20253810 AMAQI
19th Jul 20253411 AMAQI
19th Jul 20253012 PMAQI
19th Jul 2025281 PMAQI
19th Jul 2025282 PMAQI
19th Jul 2025283 PMAQI
19th Jul 2025254 PMAQI
19th Jul 2025265 PMAQI
19th Jul 2025286 PMAQI
19th Jul 2025287 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025359 PMAQI
19th Jul 20253410 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253512 AMAQI
20th Jul 2025401 AMAQI
20th Jul 2025432 AMAQI
20th Jul 2025443 AMAQI
25°C23/28°C
20th Jul 2025434 AMAQI
20th Jul 2025415 AMAQI
20th Jul 2025416 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025428 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20253610 AMAQI
20th Jul 20253811 AMAQI
20th Jul 20254012 PMAQI
20th Jul 2025421 PMAQI
20th Jul 2025382 PMAQI
20th Jul 2025343 PMAQI
20th Jul 2025404 PMAQI
20th Jul 2025395 PMAQI
20th Jul 2025366 PMAQI
20th Jul 2025357 PMAQI
20th Jul 2025388 PMAQI
20th Jul 2025379 PMAQI
20th Jul 20253710 PMAQI
20th Jul 20253411 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025391 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025413 AMAQI
26°C23/28°C
21st Jul 2025414 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025429 AMAQI
21st Jul 20254510 AMAQI
21st Jul 20254611 AMAQI
21st Jul 20254812 PMAQI
21st Jul 2025491 PMAQI
21st Jul 2025462 PMAQI
21st Jul 2025463 PMAQI
21st Jul 2025504 PMAQI
21st Jul 2025485 PMAQI
21st Jul 2025466 PMAQI
21st Jul 2025447 PMAQI
21st Jul 2025418 PMAQI
21st Jul 2025429 PMAQI
21st Jul 20254210 PMAQI
21st Jul 20254211 PMAQI
22nd Jul 20254112 AMAQI
22nd Jul 2025401 AMAQI
22nd Jul 2025402 AMAQI
22nd Jul 2025393 AMAQI
26°C24/29°C
22nd Jul 2025404 AMAQI
22nd Jul 2025425 AMAQI
22nd Jul 2025406 AMAQI
22nd Jul 2025407 AMAQI
22nd Jul 2025428 AMAQI
22nd Jul 2025519 AMAQI
22nd Jul 20255610 AMAQI
22nd Jul 20255411 AMAQI
22nd Jul 20255212 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025462 PMAQI
22nd Jul 2025453 PMAQI
22nd Jul 2025404 PMAQI
22nd Jul 2025455 PMAQI
22nd Jul 2025476 PMAQI
22nd Jul 2025457 PMAQI
22nd Jul 2025508 PMAQI
22nd Jul 2025449 PMAQI
22nd Jul 20254310 PMAQI
22nd Jul 20254211 PMAQI
23rd Jul 20254112 AMAQI
23rd Jul 2025401 AMAQI
23rd Jul 2025402 AMAQI
23rd Jul 2025403 AMAQI
27°C25/30°C
23rd Jul 2025414 AMAQI
23rd Jul 2025425 AMAQI
23rd Jul 2025436 AMAQI
23rd Jul 2025437 AMAQI
23rd Jul 2025438 AMAQI
23rd Jul 2025509 AMAQI
23rd Jul 20255610 AMAQI
23rd Jul 20255311 AMAQI
23rd Jul 20255212 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025532 PMAQI
23rd Jul 2025483 PMAQI
23rd Jul 2025524 PMAQI
23rd Jul 2025495 PMAQI
23rd Jul 2025516 PMAQI
23rd Jul 2025467 PMAQI
23rd Jul 2025508 PMAQI
23rd Jul 2025479 PMAQI
23rd Jul 20254510 PMAQI
23rd Jul 20254711 PMAQI
24th Jul 20254412 AMAQI
24th Jul 2025421 AMAQI
24th Jul 2025432 AMAQI
24th Jul 2025423 AMAQI
27°C24/30°C
24th Jul 2025434 AMAQI
24th Jul 2025455 AMAQI
24th Jul 2025446 AMAQI
24th Jul 2025447 AMAQI
24th Jul 2025448 AMAQI
24th Jul 2025529 AMAQI
24th Jul 20256010 AMAQI
24th Jul 20256111 AMAQI
24th Jul 20256012 PMAQI
24th Jul 2025571 PMAQI
24th Jul 2025572 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025484 PMAQI
24th Jul 2025495 PMAQI
24th Jul 2025426 PMAQI
24th Jul 2025487 PMAQI
24th Jul 2025528 PMAQI
24th Jul 2025499 PMAQI
24th Jul 20254810 PMAQI
24th Jul 20254611 PMAQI
25th Jul 20254312 AMAQI
25th Jul 2025451 AMAQI
25th Jul 2025442 AMAQI
25th Jul 2025443 AMAQI
27°C24/30°C
25th Jul 2025444 AMAQI
25th Jul 2025485 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025477 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025549 AMAQI
25th Jul 20256210 AMAQI
25th Jul 20256511 AMAQI
25th Jul 20256412 PMAQI
25th Jul 2025601 PMAQI
25th Jul 2025562 PMAQI
25th Jul 2025543 PMAQI
25th Jul 2025544 PMAQI
25th Jul 2025545 PMAQI
25th Jul 2025506 PMAQI
25th Jul 2025487 PMAQI
25th Jul 2025468 PMAQI
25th Jul 2025469 PMAQI
25th Jul 20254610 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20254212 AMAQI
26th Jul 2025461 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025463 AMAQI
27°C25/30°C
26th Jul 2025484 AMAQI
26th Jul 2025515 AMAQI
26th Jul 2025516 AMAQI
26th Jul 2025517 AMAQI
26th Jul 2025518 AMAQI
26th Jul 2025509 AMAQI
26th Jul 20255110 AMAQI
26th Jul 20255511 AMAQI
26th Jul 20254812 PMAQI
26th Jul 2025481 PMAQI
26th Jul 2025472 PMAQI
26th Jul 2025523 PMAQI
26th Jul 2025484 PMAQI
26th Jul 2025515 PMAQI
26th Jul 2025536 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025438 PMAQI
26th Jul 2025469 PMAQI
26th Jul 20254410 PMAQI
26th Jul 20254411 PMAQI
27th Jul 20254312 AMAQI
27th Jul 2025471 AMAQI
27th Jul 2025482 AMAQI
27th Jul 2025503 AMAQI
27°C24/30°C
27th Jul 2025484 AMAQI
27th Jul 2025505 AMAQI
27th Jul 2025506 AMAQI
27th Jul 2025507 AMAQI
27th Jul 2025508 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20254710 AMAQI
27th Jul 20254411 AMAQI
27th Jul 20254912 PMAQI
27th Jul 2025451 PMAQI
27th Jul 2025422 PMAQI
27th Jul 2025403 PMAQI
27th Jul 2025414 PMAQI
27th Jul 2025545 PMAQI
27th Jul 2025436 PMAQI
27th Jul 2025457 PMAQI
27th Jul 2025468 PMAQI
27th Jul 2025459 PMAQI
27th Jul 20254210 PMAQI
27th Jul 20253811 PMAQI
28th Jul 20254012 AMAQI
28th Jul 2025471 AMAQI
28th Jul 2025492 AMAQI
28th Jul 2025493 AMAQI
27°C24/31°C
28th Jul 2025484 AMAQI
28th Jul 2025485 AMAQI
28th Jul 2025486 AMAQI
28th Jul 2025487 AMAQI
28th Jul 2025488 AMAQI
28th Jul 2025489 AMAQI
28th Jul 20254910 AMAQI
28th Jul 20254611 AMAQI
28th Jul 20254612 PMAQI
28th Jul 2025531 PMAQI
28th Jul 2025482 PMAQI
28th Jul 2025453 PMAQI
28th Jul 2025444 PMAQI
28th Jul 2025475 PMAQI
28th Jul 2025406 PMAQI
28th Jul 2025397 PMAQI
28th Jul 2025398 PMAQI
28th Jul 2025449 PMAQI
28th Jul 20254610 PMAQI
28th Jul 20254611 PMAQI
29th Jul 20254312 AMAQI
29th Jul 2025441 AMAQI
29th Jul 2025472 AMAQI
29th Jul 2025473 AMAQI
27°C25/30°C
29th Jul 2025474 AMAQI
29th Jul 2025485 AMAQI
29th Jul 2025486 AMAQI
29th Jul 2025487 AMAQI
29th Jul 2025488 AMAQI
29th Jul 2025529 AMAQI
29th Jul 20255610 AMAQI
29th Jul 20255811 AMAQI
29th Jul 20255612 PMAQI
29th Jul 2025501 PMAQI
29th Jul 2025442 PMAQI
29th Jul 2025443 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025275 PMAQI
29th Jul 2025306 PMAQI
29th Jul 2025247 PMAQI
29th Jul 2025278 PMAQI
29th Jul 2025359 PMAQI
29th Jul 20253210 PMAQI
29th Jul 20253211 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025451 AMAQI
30th Jul 2025472 AMAQI
30th Jul 2025473 AMAQI
26°C24/30°C
30th Jul 2025494 AMAQI
30th Jul 2025505 AMAQI
30th Jul 2025516 AMAQI
30th Jul 2025507 AMAQI
30th Jul 2025498 AMAQI
30th Jul 2025339 AMAQI
30th Jul 20252310 AMAQI
30th Jul 20253011 AMAQI
30th Jul 20253112 PMAQI
30th Jul 2025281 PMAQI
30th Jul 2025332 PMAQI
30th Jul 2025393 PMAQI
30th Jul 2025404 PMAQI
30th Jul 2025395 PMAQI
30th Jul 2025386 PMAQI
30th Jul 2025377 PMAQI
30th Jul 2025388 PMAQI
30th Jul 2025419 PMAQI
30th Jul 20254110 PMAQI
30th Jul 20254211 PMAQI
31st Jul 20254312 AMAQI
31st Jul 2025471 AMAQI
31st Jul 2025482 AMAQI
31st Jul 2025483 AMAQI
25°C23/27°C
31st Jul 2025484 AMAQI
31st Jul 2025485 AMAQI
31st Jul 2025486 AMAQI
31st Jul 2025487 AMAQI
31st Jul 2025488 AMAQI
31st Jul 2025489 AMAQI
31st Jul 20254810 AMAQI
31st Jul 20254111 AMAQI
31st Jul 20253312 PMAQI
31st Jul 2025351 PMAQI
31st Jul 2025322 PMAQI
31st Jul 2025323 PMAQI
31st Jul 2025334 PMAQI
31st Jul 2025345 PMAQI
31st Jul 2025286 PMAQI
31st Jul 2025297 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025329 PMAQI
31st Jul 20253210 PMAQI
31st Jul 20252611 PMAQI
1st Aug 20253012 AMAQI
1st Aug 2025361 AMAQI
1st Aug 2025372 AMAQI
1st Aug 2025403 AMAQI
24°C22/26°C
1st Aug 2025444 AMAQI
1st Aug 2025395 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025427 AMAQI
1st Aug 2025388 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20253610 AMAQI
1st Aug 20254211 AMAQI
1st Aug 20255212 PMAQI
1st Aug 2025441 PMAQI
1st Aug 2025322 PMAQI
1st Aug 2025313 PMAQI
1st Aug 2025444 PMAQI
1st Aug 2025365 PMAQI
1st Aug 2025426 PMAQI
1st Aug 2025307 PMAQI
1st Aug 2025268 PMAQI
1st Aug 2025309 PMAQI
1st Aug 20253310 PMAQI
1st Aug 20253011 PMAQI
2nd Aug 20252912 AMAQI
2nd Aug 2025351 AMAQI
2nd Aug 2025392 AMAQI
2nd Aug 2025413 AMAQI
25°C23/27°C
2nd Aug 2025414 AMAQI
2nd Aug 2025405 AMAQI
2nd Aug 2025426 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025369 AMAQI
2nd Aug 20253510 AMAQI
2nd Aug 20254411 AMAQI
2nd Aug 20252812 PMAQI
2nd Aug 2025391 PMAQI
2nd Aug 2025512 PMAQI
2nd Aug 2025493 PMAQI
2nd Aug 2025404 PMAQI
2nd Aug 2025465 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025507 PMAQI
2nd Aug 2025398 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253611 PMAQI
3rd Aug 20253012 AMAQI
3rd Aug 2025351 AMAQI
3rd Aug 2025382 AMAQI
3rd Aug 2025383 AMAQI
27°C25/32°C
3rd Aug 2025384 AMAQI
3rd Aug 2025385 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025387 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025449 AMAQI
3rd Aug 20254510 AMAQI
3rd Aug 20254311 AMAQI
3rd Aug 20255512 PMAQI
3rd Aug 2025501 PMAQI
3rd Aug 2025552 PMAQI
3rd Aug 2025463 PMAQI
3rd Aug 2025434 PMAQI
3rd Aug 2025455 PMAQI
3rd Aug 2025536 PMAQI
3rd Aug 2025527 PMAQI
3rd Aug 2025458 PMAQI
3rd Aug 2025349 PMAQI
3rd Aug 20253610 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20253312 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025383 AMAQI
26°C24/29°C
4th Aug 2025404 AMAQI
4th Aug 2025415 AMAQI
4th Aug 2025416 AMAQI
4th Aug 2025407 AMAQI
4th Aug 2025418 AMAQI
4th Aug 2025529 AMAQI
4th Aug 20255710 AMAQI
4th Aug 20256511 AMAQI
4th Aug 20257012 PMAQI
4th Aug 2025641 PMAQI
4th Aug 2025722 PMAQI
4th Aug 2025643 PMAQI
4th Aug 2025744 PMAQI
4th Aug 2025735 PMAQI
4th Aug 2025686 PMAQI
4th Aug 2025627 PMAQI
4th Aug 2025628 PMAQI
4th Aug 2025569 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20254811 PMAQI
5th Aug 20254912 AMAQI
5th Aug 2025421 AMAQI
5th Aug 2025402 AMAQI
5th Aug 2025403 AMAQI
27°C24/30°C
5th Aug 2025444 AMAQI
5th Aug 2025445 AMAQI
5th Aug 2025426 AMAQI
5th Aug 2025427 AMAQI
5th Aug 2025448 AMAQI
5th Aug 2025509 AMAQI
5th Aug 20254910 AMAQI
5th Aug 20255411 AMAQI
5th Aug 20255912 PMAQI
5th Aug 2025531 PMAQI
5th Aug 2025512 PMAQI
5th Aug 2025503 PMAQI
5th Aug 2025564 PMAQI
5th Aug 2025525 PMAQI
5th Aug 2025486 PMAQI
5th Aug 2025397 PMAQI
5th Aug 2025448 PMAQI
5th Aug 2025449 PMAQI
5th Aug 20253910 PMAQI
5th Aug 20253811 PMAQI
6th Aug 20253812 AMAQI
6th Aug 2025451 AMAQI
6th Aug 2025472 AMAQI
6th Aug 2025473 AMAQI
--°C/°C
4 AM
11 AM
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 6 PM
48AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
4 AM - 6 PM
48AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 6 PM (Avg. 48), while the lowest AQI was between 4 AM to 6 PM (Avg. 48).
Night time
Avg. Highest Time
1 AM - 3 AM
47AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
12 AM
43AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 3 AM (Avg. 47), while the lowest AQI was between 12 AM to 12 AM (Avg. 43).
2025 Days Vs Air Quality
Hitachi, Ibaraki, Japan
2025
93%
200
7%
16
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
200 DaysModerate
16 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 217 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Hitachi, Ibaraki, Japan
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
26AQI
26AQI
2nd January 2025
27AQI
27AQI
3rd January 2025
25AQI
25AQI
4th January 2025
27AQI
27AQI
5th January 2025
26AQI
26AQI
6th January 2025
39AQI
39AQI
7th January 2025
25AQI
25AQI
8th January 2025
29AQI
29AQI
9th January 2025
25AQI
25AQI
10th January 2025
26AQI
26AQI
11th January 2025
25AQI
25AQI
12th January 2025
23AQI
23AQI
13th January 2025
26AQI
26AQI
14th January 2025
27AQI
27AQI
15th January 2025
27AQI
27AQI
16th January 2025
25AQI
25AQI
17th January 2025
26AQI
26AQI
18th January 2025
25AQI
25AQI
19th January 2025
32AQI
32AQI
20th January 2025
30AQI
30AQI
21st January 2025
36AQI
36AQI
22nd January 2025
31AQI
31AQI
23rd January 2025
33AQI
33AQI
24th January 2025
31AQI
31AQI
25th January 2025
29AQI
29AQI
26th January 2025
30AQI
30AQI
27th January 2025
28AQI
28AQI
28th January 2025
29AQI
29AQI
29th January 2025
28AQI
28AQI
30th January 2025
28AQI
28AQI
31st January 2025
28AQI
28AQI
1st February 2025
27AQI
27AQI
2nd February 2025
28AQI
28AQI
3rd February 2025
26AQI
26AQI
4th February 2025
29AQI
29AQI
5th February 2025
28AQI
28AQI
6th February 2025
27AQI
27AQI
7th February 2025
30AQI
30AQI
8th February 2025
29AQI
29AQI
9th February 2025
28AQI
28AQI
10th February 2025
28AQI
28AQI
11th February 2025
30AQI
30AQI
12th February 2025
33AQI
33AQI
13th February 2025
31AQI
31AQI
14th February 2025
30AQI
30AQI
15th February 2025
30AQI
30AQI
16th February 2025
32AQI
32AQI
17th February 2025
33AQI
33AQI
18th February 2025
30AQI
30AQI
19th February 2025
31AQI
31AQI
20th February 2025
30AQI
30AQI
21st February 2025
30AQI
30AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
31AQI
31AQI
24th February 2025
32AQI
32AQI
25th February 2025
33AQI
33AQI
26th February 2025
36AQI
36AQI
27th February 2025
37AQI
37AQI
28th February 2025
43AQI
43AQI
1st March 2025
42AQI
42AQI
2nd March 2025
48AQI
48AQI
3rd March 2025
34AQI
34AQI
4th March 2025
36AQI
36AQI
5th March 2025
29AQI
29AQI
6th March 2025
30AQI
30AQI
7th March 2025
32AQI
32AQI
8th March 2025
33AQI
33AQI
9th March 2025
32AQI
32AQI
10th March 2025
36AQI
36AQI
11th March 2025
36AQI
36AQI
12th March 2025
41AQI
41AQI
13th March 2025
43AQI
43AQI
14th March 2025
36AQI
36AQI
15th March 2025
34AQI
34AQI
16th March 2025
23AQI
23AQI
17th March 2025
21AQI
21AQI
18th March 2025
24AQI
24AQI
19th March 2025
18AQI
18AQI
20th March 2025
23AQI
23AQI
21st March 2025
34AQI
34AQI
22nd March 2025
46AQI
46AQI
23rd March 2025
46AQI
46AQI
24th March 2025
40AQI
40AQI
25th March 2025
63AQI
63AQI
26th March 2025
63AQI
63AQI
27th March 2025
65AQI
65AQI
28th March 2025
47AQI
47AQI
29th March 2025
37AQI
37AQI
30th March 2025
35AQI
35AQI
31st March 2025
33AQI
33AQI
1st April 2025
25AQI
25AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
21AQI
21AQI
4th April 2025
19AQI
19AQI
5th April 2025
25AQI
25AQI
6th April 2025
25AQI
25AQI
7th April 2025
30AQI
30AQI
8th April 2025
36AQI
36AQI
9th April 2025
28AQI
28AQI
10th April 2025
44AQI
44AQI
11th April 2025
46AQI
46AQI
12th April 2025
34AQI
34AQI
13th April 2025
29AQI
29AQI
14th April 2025
34AQI
34AQI
15th April 2025
28AQI
28AQI
16th April 2025
25AQI
25AQI
17th April 2025
39AQI
39AQI
18th April 2025
49AQI
49AQI
19th April 2025
59AQI
59AQI
20th April 2025
54AQI
54AQI
21st April 2025
43AQI
43AQI
22nd April 2025
48AQI
48AQI
23rd April 2025
28AQI
28AQI
24th April 2025
36AQI
36AQI
25th April 2025
36AQI
36AQI
26th April 2025
47AQI
47AQI
27th April 2025
48AQI
48AQI
28th April 2025
51AQI
51AQI
29th April 2025
34AQI
34AQI
30th April 2025
41AQI
41AQI
1st May 2025
31AQI
31AQI
2nd May 2025
31AQI
31AQI
3rd May 2025
34AQI
34AQI
4th May 2025
34AQI
34AQI
5th May 2025
35AQI
35AQI
6th May 2025
30AQI
30AQI
7th May 2025
28AQI
28AQI
8th May 2025
30AQI
30AQI
9th May 2025
31AQI
31AQI
10th May 2025
22AQI
22AQI
11th May 2025
25AQI
25AQI
12th May 2025
20AQI
20AQI
13th May 2025
35AQI
35AQI
14th May 2025
32AQI
32AQI
15th May 2025
39AQI
39AQI
16th May 2025
44AQI
44AQI
17th May 2025
28AQI
28AQI
18th May 2025
44AQI
44AQI
19th May 2025
36AQI
36AQI
20th May 2025
62AQI
62AQI
21st May 2025
55AQI
55AQI
22nd May 2025
49AQI
49AQI
23rd May 2025
45AQI
45AQI
24th May 2025
40AQI
40AQI
25th May 2025
29AQI
29AQI
26th May 2025
29AQI
29AQI
27th May 2025
27AQI
27AQI
28th May 2025
24AQI
24AQI
29th May 2025
26AQI
26AQI
30th May 2025
23AQI
23AQI
31st May 2025
18AQI
18AQI
1st June 2025
19AQI
19AQI
2nd June 2025
32AQI
32AQI
3rd June 2025
31AQI
31AQI
4th June 2025
28AQI
28AQI
5th June 2025
41AQI
41AQI
6th June 2025
46AQI
46AQI
7th June 2025
52AQI
52AQI
8th June 2025
58AQI
58AQI
9th June 2025
50AQI
50AQI
10th June 2025
42AQI
42AQI
11th June 2025
34AQI
34AQI
12th June 2025
42AQI
42AQI
13th June 2025
36AQI
36AQI
14th June 2025
35AQI
35AQI
15th June 2025
34AQI
34AQI
16th June 2025
29AQI
29AQI
17th June 2025
38AQI
38AQI
18th June 2025
39AQI
39AQI
19th June 2025
36AQI
36AQI
20th June 2025
31AQI
31AQI
21st June 2025
32AQI
32AQI
22nd June 2025
31AQI
31AQI
23rd June 2025
32AQI
32AQI
24th June 2025
31AQI
31AQI
25th June 2025
29AQI
29AQI
26th June 2025
25AQI
25AQI
27th June 2025
32AQI
32AQI
28th June 2025
33AQI
33AQI
29th June 2025
37AQI
37AQI
30th June 2025
45AQI
45AQI
1st July 2025
44AQI
44AQI
2nd July 2025
49AQI
49AQI
3rd July 2025
47AQI
47AQI
4th July 2025
42AQI
42AQI
5th July 2025
55AQI
55AQI
6th July 2025
61AQI
61AQI
7th July 2025
75AQI
75AQI
8th July 2025
73AQI
73AQI
9th July 2025
70AQI
70AQI
10th July 2025
52AQI
52AQI
11th July 2025
44AQI
44AQI
12th July 2025
45AQI
45AQI
13th July 2025
47AQI
47AQI
14th July 2025
44AQI
44AQI
15th July 2025
40AQI
40AQI
16th July 2025
40AQI
40AQI
17th July 2025
43AQI
43AQI
18th July 2025
40AQI
40AQI
19th July 2025
35AQI
35AQI
20th July 2025
39AQI
39AQI
21st July 2025
43AQI
43AQI
22nd July 2025
44AQI
44AQI
23rd July 2025
47AQI
47AQI
24th July 2025
48AQI
48AQI
25th July 2025
50AQI
50AQI
26th July 2025
48AQI
48AQI
27th July 2025
46AQI
46AQI
28th July 2025
46AQI
46AQI
29th July 2025
41AQI
41AQI
30th July 2025
40AQI
40AQI
31st July 2025
39AQI
39AQI
1st August 2025
37AQI
37AQI
2nd August 2025
40AQI
40AQI
3rd August 2025
42AQI
42AQI
4th August 2025
48AQI
48AQI
28AQI
31AQI
37AQI
36AQI
33AQI
36AQI
48AQI
42AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202536AQI
31
28
28
3
27
3
29
2
28
2
25
6
4
200
16
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
January28AQI
202432AQI
31
29
27
4
25
4
1
30
1
28
2
20
11
31
28
2
31
30
31
341
24
1
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
December25AQI
202333AQI
31
27
1
27
4
26
4
30
1
28
2
29
2
29
2
30
31
27
2
31
346
18
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
December27AQI
202232AQI
30
21
29
2
26
4
30
1
26
4
17
4
1
28
31
30
31
300
15
Highest AQI recorded in
April39AQI
Lowest AQI recorded in
December23AQI
202130AQI
29
2
12
19
2
28
2
30
1
26
4
31
31
30
31
30
31
328
11
Highest AQI recorded in
March40AQI
Lowest AQI recorded in
July26AQI
202032AQI
11
1
21
16
2
26
4
31
25
6
19
30
1
28
2
15
222
16
Highest AQI recorded in
August39AQI
Lowest AQI recorded in
December24AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
36AQILeast Polluted Year Recorded
2021(Avg.)
30AQIHitachi's annual 2025 AQI (36) shows an average percentage change of 13.02% (worsened AQI) compared to previous years: 2020 (32), 2021 (30), 2022 (32), 2023 (33), 2024 (32).
