Hitachi Naka, 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 Naka, Ibaraki, Japan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Aug 2023
56AQILowest AQI recorded on
22nd Aug 2023
13AQISame Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 40 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Hitachi Naka, Ibaraki, Japan
AQI
Day
Night
.
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
Day time
Avg. Highest Time
2PM4th Aug
78AQI
Avg. Lowest Time
7AM4th Aug
40AQI
Night time
Avg. Highest Time
7PM4th Aug
66AQI
Avg. Lowest Time
3AM5th Aug
40AQI
In the last 24 hours,
Hitachi Naka's AQI reached its highest point of 78 at 2 PM during the Day, while the lowest point, 40, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hitachi Naka, Ibaraki, Japan
JulAug
06th - 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 - 04th04th - 05th05th
Day
Night
6th Jul 2025424 AMAQI
6th Jul 2025425 AMAQI
6th Jul 2025446 AMAQI
6th Jul 2025447 AMAQI
6th Jul 2025448 AMAQI
6th Jul 2025569 AMAQI
6th Jul 20257610 AMAQI
6th Jul 20258111 AMAQI
6th Jul 20258412 PMAQI
6th Jul 2025721 PMAQI
6th Jul 2025712 PMAQI
6th Jul 2025683 PMAQI
6th Jul 2025674 PMAQI
6th Jul 2025695 PMAQI
6th Jul 2025746 PMAQI
6th Jul 2025787 PMAQI
6th Jul 2025768 PMAQI
6th Jul 2025609 PMAQI
6th Jul 20255810 PMAQI
6th Jul 20255911 PMAQI
7th Jul 20255712 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025482 AMAQI
7th Jul 2025493 AMAQI
28°C24/32°C
7th Jul 2025504 AMAQI
7th Jul 2025525 AMAQI
7th Jul 2025526 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025538 AMAQI
7th Jul 20251039 AMAQI
7th Jul 202511810 AMAQI
7th Jul 202512711 AMAQI
7th Jul 202512812 PMAQI
7th Jul 2025881 PMAQI
7th Jul 2025842 PMAQI
7th Jul 2025863 PMAQI
7th Jul 2025874 PMAQI
7th Jul 2025905 PMAQI
7th Jul 2025896 PMAQI
7th Jul 2025887 PMAQI
7th Jul 2025828 PMAQI
7th Jul 2025659 PMAQI
7th Jul 20256410 PMAQI
7th Jul 20256411 PMAQI
8th Jul 20256312 AMAQI
8th Jul 2025571 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025563 AMAQI
28°C24/31°C
8th Jul 2025564 AMAQI
8th Jul 2025625 AMAQI
8th Jul 2025626 AMAQI
8th Jul 2025617 AMAQI
8th Jul 2025618 AMAQI
8th Jul 20251099 AMAQI
8th Jul 202512510 AMAQI
8th Jul 202511711 AMAQI
8th Jul 202511612 PMAQI
8th Jul 2025891 PMAQI
8th Jul 2025862 PMAQI
8th Jul 2025843 PMAQI
8th Jul 2025824 PMAQI
8th Jul 2025785 PMAQI
8th Jul 2025766 PMAQI
8th Jul 2025767 PMAQI
8th Jul 2025748 PMAQI
8th Jul 2025659 PMAQI
8th Jul 20256510 PMAQI
8th Jul 20256711 PMAQI
9th Jul 20256612 AMAQI
9th Jul 2025611 AMAQI
9th Jul 2025612 AMAQI
9th Jul 2025613 AMAQI
28°C25/32°C
9th Jul 2025624 AMAQI
9th Jul 2025645 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025657 AMAQI
9th Jul 2025648 AMAQI
9th Jul 20251049 AMAQI
9th Jul 202511710 AMAQI
9th Jul 202512611 AMAQI
9th Jul 202513012 PMAQI
9th Jul 2025921 PMAQI
9th Jul 2025942 PMAQI
9th Jul 2025933 PMAQI
9th Jul 2025784 PMAQI
9th Jul 2025725 PMAQI
9th Jul 2025676 PMAQI
9th Jul 2025627 PMAQI
9th Jul 2025608 PMAQI
9th Jul 2025629 PMAQI
9th Jul 20256210 PMAQI
9th Jul 20256011 PMAQI
10th Jul 20256212 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025642 AMAQI
10th Jul 2025643 AMAQI
29°C25/33°C
10th Jul 2025664 AMAQI
10th Jul 2025685 AMAQI
10th Jul 2025686 AMAQI
10th Jul 2025687 AMAQI
10th Jul 2025688 AMAQI
10th Jul 2025499 AMAQI
10th Jul 20255410 AMAQI
10th Jul 20255411 AMAQI
10th Jul 20254512 PMAQI
10th Jul 2025521 PMAQI
10th Jul 2025492 PMAQI
10th Jul 2025483 PMAQI
10th Jul 2025454 PMAQI
10th Jul 2025425 PMAQI
10th Jul 2025396 PMAQI
10th Jul 2025417 PMAQI
10th Jul 2025448 PMAQI
10th Jul 2025579 PMAQI
10th Jul 20255710 PMAQI
10th Jul 20255711 PMAQI
11th Jul 20255812 AMAQI
11th Jul 2025621 AMAQI
11th Jul 2025632 AMAQI
11th Jul 2025633 AMAQI
25°C21/29°C
11th Jul 2025624 AMAQI
11th Jul 2025625 AMAQI
11th Jul 2025626 AMAQI
11th Jul 2025617 AMAQI
11th Jul 2025618 AMAQI
11th Jul 2025279 AMAQI
11th Jul 20251610 AMAQI
11th Jul 20251511 AMAQI
11th Jul 20251712 PMAQI
11th Jul 2025351 PMAQI
11th Jul 2025362 PMAQI
11th Jul 2025363 PMAQI
11th Jul 2025364 PMAQI
11th Jul 2025375 PMAQI
11th Jul 2025406 PMAQI
11th Jul 2025407 PMAQI
11th Jul 2025468 PMAQI
11th Jul 2025559 PMAQI
11th Jul 20255610 PMAQI
11th Jul 20255511 PMAQI
12th Jul 20255612 AMAQI
12th Jul 2025581 AMAQI
12th Jul 2025602 AMAQI
12th Jul 2025603 AMAQI
21°C20/24°C
12th Jul 2025594 AMAQI
12th Jul 2025565 AMAQI
12th Jul 2025576 AMAQI
12th Jul 2025577 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025409 AMAQI
12th Jul 20253310 AMAQI
12th Jul 20253211 AMAQI
12th Jul 20252612 PMAQI
12th Jul 2025401 PMAQI
12th Jul 2025402 PMAQI
12th Jul 2025423 PMAQI
12th Jul 2025424 PMAQI
12th Jul 2025405 PMAQI
12th Jul 2025396 PMAQI
12th Jul 2025427 PMAQI
12th Jul 2025448 PMAQI
12th Jul 2025549 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255411 PMAQI
13th Jul 20255412 AMAQI
13th Jul 2025571 AMAQI
13th Jul 2025562 AMAQI
13th Jul 2025573 AMAQI
21°C20/23°C
13th Jul 2025574 AMAQI
13th Jul 2025555 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025558 AMAQI
13th Jul 2025449 AMAQI
13th Jul 20253810 AMAQI
13th Jul 20254511 AMAQI
13th Jul 20254612 PMAQI
13th Jul 2025521 PMAQI
13th Jul 2025522 PMAQI
13th Jul 2025493 PMAQI
13th Jul 2025434 PMAQI
13th Jul 2025415 PMAQI
13th Jul 2025416 PMAQI
13th Jul 2025387 PMAQI
13th Jul 2025408 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255211 PMAQI
14th Jul 20255212 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025553 AMAQI
24°C21/28°C
14th Jul 2025544 AMAQI
14th Jul 2025545 AMAQI
14th Jul 2025546 AMAQI
14th Jul 2025547 AMAQI
14th Jul 2025548 AMAQI
14th Jul 2025269 AMAQI
14th Jul 20251710 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20252112 PMAQI
14th Jul 2025351 PMAQI
14th Jul 2025342 PMAQI
14th Jul 2025433 PMAQI
14th Jul 2025464 PMAQI
14th Jul 2025385 PMAQI
14th Jul 2025346 PMAQI
14th Jul 2025327 PMAQI
14th Jul 2025368 PMAQI
14th Jul 2025509 PMAQI
14th Jul 20255010 PMAQI
14th Jul 20255011 PMAQI
15th Jul 20255112 AMAQI
15th Jul 2025531 AMAQI
15th Jul 2025542 AMAQI
15th Jul 2025543 AMAQI
25°C23/28°C
15th Jul 2025534 AMAQI
15th Jul 2025525 AMAQI
15th Jul 2025526 AMAQI
15th Jul 2025527 AMAQI
15th Jul 2025528 AMAQI
15th Jul 2025279 AMAQI
15th Jul 20251710 AMAQI
15th Jul 20251811 AMAQI
15th Jul 20252012 PMAQI
15th Jul 2025281 PMAQI
15th Jul 2025282 PMAQI
15th Jul 2025323 PMAQI
15th Jul 2025344 PMAQI
15th Jul 2025365 PMAQI
15th Jul 2025386 PMAQI
15th Jul 2025347 PMAQI
15th Jul 2025418 PMAQI
15th Jul 2025489 PMAQI
15th Jul 20254810 PMAQI
15th Jul 20254811 PMAQI
16th Jul 20254912 AMAQI
16th Jul 2025521 AMAQI
16th Jul 2025522 AMAQI
16th Jul 2025523 AMAQI
25°C24/27°C
16th Jul 2025524 AMAQI
16th Jul 2025495 AMAQI
16th Jul 2025516 AMAQI
16th Jul 2025507 AMAQI
16th Jul 2025508 AMAQI
16th Jul 2025459 AMAQI
16th Jul 20254410 AMAQI
16th Jul 20253411 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025331 PMAQI
16th Jul 2025302 PMAQI
16th Jul 2025283 PMAQI
16th Jul 2025314 PMAQI
16th Jul 2025295 PMAQI
16th Jul 2025306 PMAQI
16th Jul 2025287 PMAQI
16th Jul 2025318 PMAQI
16th Jul 2025469 PMAQI
16th Jul 20254410 PMAQI
16th Jul 20254611 PMAQI
17th Jul 20254712 AMAQI
17th Jul 2025501 AMAQI
17th Jul 2025502 AMAQI
17th Jul 2025513 AMAQI
25°C24/27°C
17th Jul 2025514 AMAQI
17th Jul 2025495 AMAQI
17th Jul 2025486 AMAQI
17th Jul 2025487 AMAQI
17th Jul 2025508 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20252410 AMAQI
17th Jul 20252311 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025382 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025374 PMAQI
17th Jul 2025365 PMAQI
17th Jul 2025346 PMAQI
17th Jul 2025357 PMAQI
17th Jul 2025408 PMAQI
17th Jul 2025469 PMAQI
17th Jul 20254310 PMAQI
17th Jul 20254311 PMAQI
18th Jul 20254412 AMAQI
18th Jul 2025481 AMAQI
18th Jul 2025482 AMAQI
18th Jul 2025483 AMAQI
27°C25/31°C
18th Jul 2025484 AMAQI
18th Jul 2025465 AMAQI
18th Jul 2025466 AMAQI
18th Jul 2025467 AMAQI
18th Jul 2025468 AMAQI
18th Jul 2025359 AMAQI
18th Jul 20253410 AMAQI
18th Jul 20253411 AMAQI
18th Jul 20253212 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025342 PMAQI
18th Jul 2025343 PMAQI
18th Jul 2025364 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025346 PMAQI
18th Jul 2025337 PMAQI
18th Jul 2025378 PMAQI
18th Jul 2025429 PMAQI
18th Jul 20254210 PMAQI
18th Jul 20254211 PMAQI
19th Jul 20254312 AMAQI
19th Jul 2025441 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025463 AMAQI
27°C24/32°C
19th Jul 2025454 AMAQI
19th Jul 2025435 AMAQI
19th Jul 2025436 AMAQI
19th Jul 2025447 AMAQI
19th Jul 2025448 AMAQI
19th Jul 2025359 AMAQI
19th Jul 20252910 AMAQI
19th Jul 20253111 AMAQI
19th Jul 20253112 PMAQI
19th Jul 2025321 PMAQI
19th Jul 2025342 PMAQI
19th Jul 2025303 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025295 PMAQI
19th Jul 2025306 PMAQI
19th Jul 2025277 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253710 PMAQI
19th Jul 20253811 PMAQI
20th Jul 20253912 AMAQI
20th Jul 2025411 AMAQI
20th Jul 2025432 AMAQI
20th Jul 2025433 AMAQI
27°C24/31°C
20th Jul 2025424 AMAQI
20th Jul 2025425 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025427 AMAQI
20th Jul 2025428 AMAQI
20th Jul 2025369 AMAQI
20th Jul 20253710 AMAQI
20th Jul 20253511 AMAQI
20th Jul 20253712 PMAQI
20th Jul 2025381 PMAQI
20th Jul 2025382 PMAQI
20th Jul 2025353 PMAQI
20th Jul 2025334 PMAQI
20th Jul 2025345 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025368 PMAQI
20th Jul 2025379 PMAQI
20th Jul 20253710 PMAQI
20th Jul 20253611 PMAQI
21st Jul 20253712 AMAQI
21st Jul 2025401 AMAQI
21st Jul 2025412 AMAQI
21st Jul 2025413 AMAQI
28°C24/32°C
21st Jul 2025414 AMAQI
21st Jul 2025405 AMAQI
21st Jul 2025396 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025408 AMAQI
21st Jul 2025389 AMAQI
21st Jul 20254510 AMAQI
21st Jul 20254811 AMAQI
21st Jul 20255012 PMAQI
21st Jul 2025491 PMAQI
21st Jul 2025462 PMAQI
21st Jul 2025473 PMAQI
21st Jul 2025444 PMAQI
21st Jul 2025455 PMAQI
21st Jul 2025486 PMAQI
21st Jul 2025437 PMAQI
21st Jul 2025388 PMAQI
21st Jul 2025389 PMAQI
21st Jul 20253610 PMAQI
21st Jul 20253511 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025381 AMAQI
22nd Jul 2025382 AMAQI
22nd Jul 2025383 AMAQI
28°C25/33°C
22nd Jul 2025384 AMAQI
22nd Jul 2025405 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025397 AMAQI
22nd Jul 2025418 AMAQI
22nd Jul 2025399 AMAQI
22nd Jul 20255010 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20255212 PMAQI
22nd Jul 2025461 PMAQI
22nd Jul 2025462 PMAQI
22nd Jul 2025443 PMAQI
22nd Jul 2025434 PMAQI
22nd Jul 2025485 PMAQI
22nd Jul 2025406 PMAQI
22nd Jul 2025397 PMAQI
22nd Jul 2025358 PMAQI
22nd Jul 2025389 PMAQI
22nd Jul 20253810 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253412 AMAQI
23rd Jul 2025381 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025373 AMAQI
29°C25/33°C
23rd Jul 2025384 AMAQI
23rd Jul 2025395 AMAQI
23rd Jul 2025406 AMAQI
23rd Jul 2025407 AMAQI
23rd Jul 2025408 AMAQI
23rd Jul 2025369 AMAQI
23rd Jul 20254110 AMAQI
23rd Jul 20255411 AMAQI
23rd Jul 20255412 PMAQI
23rd Jul 2025511 PMAQI
23rd Jul 2025522 PMAQI
23rd Jul 2025513 PMAQI
23rd Jul 2025514 PMAQI
23rd Jul 2025515 PMAQI
23rd Jul 2025496 PMAQI
23rd Jul 2025477 PMAQI
23rd Jul 2025418 PMAQI
23rd Jul 2025399 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253711 PMAQI
24th Jul 20253612 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025382 AMAQI
24th Jul 2025373 AMAQI
29°C25/34°C
24th Jul 2025384 AMAQI
24th Jul 2025415 AMAQI
24th Jul 2025406 AMAQI
24th Jul 2025407 AMAQI
24th Jul 2025408 AMAQI
24th Jul 2025429 AMAQI
24th Jul 20255410 AMAQI
24th Jul 20255611 AMAQI
24th Jul 20255512 PMAQI
24th Jul 2025491 PMAQI
24th Jul 2025512 PMAQI
24th Jul 2025453 PMAQI
24th Jul 2025484 PMAQI
24th Jul 2025455 PMAQI
24th Jul 2025466 PMAQI
24th Jul 2025437 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025369 PMAQI
24th Jul 20253710 PMAQI
24th Jul 20253611 PMAQI
25th Jul 20253612 AMAQI
25th Jul 2025381 AMAQI
25th Jul 2025382 AMAQI
25th Jul 2025383 AMAQI
29°C25/33°C
25th Jul 2025394 AMAQI
25th Jul 2025415 AMAQI
25th Jul 2025416 AMAQI
25th Jul 2025417 AMAQI
25th Jul 2025418 AMAQI
25th Jul 2025379 AMAQI
25th Jul 20254410 AMAQI
25th Jul 20255411 AMAQI
25th Jul 20255512 PMAQI
25th Jul 2025501 PMAQI
25th Jul 2025512 PMAQI
25th Jul 2025503 PMAQI
25th Jul 2025524 PMAQI
25th Jul 2025535 PMAQI
25th Jul 2025506 PMAQI
25th Jul 2025467 PMAQI
25th Jul 2025368 PMAQI
25th Jul 2025379 PMAQI
25th Jul 20253610 PMAQI
25th Jul 20253611 PMAQI
26th Jul 20253712 AMAQI
26th Jul 2025391 AMAQI
26th Jul 2025392 AMAQI
26th Jul 2025403 AMAQI
29°C26/33°C
26th Jul 2025404 AMAQI
26th Jul 2025435 AMAQI
26th Jul 2025436 AMAQI
26th Jul 2025437 AMAQI
26th Jul 2025428 AMAQI
26th Jul 2025409 AMAQI
26th Jul 20254310 AMAQI
26th Jul 20254511 AMAQI
26th Jul 20255212 PMAQI
26th Jul 2025481 PMAQI
26th Jul 2025462 PMAQI
26th Jul 2025473 PMAQI
26th Jul 2025494 PMAQI
26th Jul 2025525 PMAQI
26th Jul 2025516 PMAQI
26th Jul 2025417 PMAQI
26th Jul 2025368 PMAQI
26th Jul 2025389 PMAQI
26th Jul 20253710 PMAQI
26th Jul 20253711 PMAQI
27th Jul 20254012 AMAQI
27th Jul 2025391 AMAQI
27th Jul 2025412 AMAQI
27th Jul 2025413 AMAQI
29°C25/35°C
27th Jul 2025404 AMAQI
27th Jul 2025425 AMAQI
27th Jul 2025436 AMAQI
27th Jul 2025437 AMAQI
27th Jul 2025438 AMAQI
27th Jul 2025369 AMAQI
27th Jul 20253910 AMAQI
27th Jul 20254211 AMAQI
27th Jul 20254512 PMAQI
27th Jul 2025441 PMAQI
27th Jul 2025442 PMAQI
27th Jul 2025433 PMAQI
27th Jul 2025444 PMAQI
27th Jul 2025425 PMAQI
27th Jul 2025396 PMAQI
27th Jul 2025387 PMAQI
27th Jul 2025338 PMAQI
27th Jul 2025389 PMAQI
27th Jul 20253810 PMAQI
27th Jul 20253711 PMAQI
28th Jul 20253812 AMAQI
28th Jul 2025401 AMAQI
28th Jul 2025422 AMAQI
28th Jul 2025423 AMAQI
30°C26/35°C
28th Jul 2025424 AMAQI
28th Jul 2025425 AMAQI
28th Jul 2025426 AMAQI
28th Jul 2025427 AMAQI
28th Jul 2025428 AMAQI
28th Jul 2025369 AMAQI
28th Jul 20254210 AMAQI
28th Jul 20254311 AMAQI
28th Jul 20254512 PMAQI
28th Jul 2025431 PMAQI
28th Jul 2025412 PMAQI
28th Jul 2025453 PMAQI
28th Jul 2025454 PMAQI
28th Jul 2025395 PMAQI
28th Jul 2025396 PMAQI
28th Jul 2025377 PMAQI
28th Jul 2025368 PMAQI
28th Jul 2025379 PMAQI
28th Jul 20253710 PMAQI
28th Jul 20253611 PMAQI
29th Jul 20253512 AMAQI
29th Jul 2025381 AMAQI
29th Jul 2025412 AMAQI
29th Jul 2025403 AMAQI
29°C26/33°C
29th Jul 2025414 AMAQI
29th Jul 2025425 AMAQI
29th Jul 2025436 AMAQI
29th Jul 2025427 AMAQI
29th Jul 2025428 AMAQI
29th Jul 2025449 AMAQI
29th Jul 20254810 AMAQI
29th Jul 20255011 AMAQI
29th Jul 20255412 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025422 PMAQI
29th Jul 2025323 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025236 PMAQI
29th Jul 2025247 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025329 PMAQI
29th Jul 20253210 PMAQI
29th Jul 20253311 PMAQI
30th Jul 20253312 AMAQI
30th Jul 2025381 AMAQI
30th Jul 2025402 AMAQI
30th Jul 2025403 AMAQI
28°C25/33°C
30th Jul 2025414 AMAQI
30th Jul 2025435 AMAQI
30th Jul 2025436 AMAQI
30th Jul 2025427 AMAQI
30th Jul 2025438 AMAQI
30th Jul 2025269 AMAQI
30th Jul 20252210 AMAQI
30th Jul 20252211 AMAQI
30th Jul 20252712 PMAQI
30th Jul 2025271 PMAQI
30th Jul 2025262 PMAQI
30th Jul 2025313 PMAQI
30th Jul 2025344 PMAQI
30th Jul 2025375 PMAQI
30th Jul 2025366 PMAQI
30th Jul 2025357 PMAQI
30th Jul 2025368 PMAQI
30th Jul 2025369 PMAQI
30th Jul 20253610 PMAQI
30th Jul 20253511 PMAQI
31st Jul 20253512 AMAQI
31st Jul 2025381 AMAQI
31st Jul 2025392 AMAQI
31st Jul 2025393 AMAQI
26°C23/30°C
31st Jul 2025384 AMAQI
31st Jul 2025385 AMAQI
31st Jul 2025386 AMAQI
31st Jul 2025387 AMAQI
31st Jul 2025388 AMAQI
31st Jul 2025389 AMAQI
31st Jul 20253810 AMAQI
31st Jul 20253411 AMAQI
31st Jul 20253412 PMAQI
31st Jul 2025321 PMAQI
31st Jul 2025312 PMAQI
31st Jul 2025283 PMAQI
31st Jul 2025274 PMAQI
31st Jul 2025275 PMAQI
31st Jul 2025326 PMAQI
31st Jul 2025307 PMAQI
31st Jul 2025308 PMAQI
31st Jul 2025289 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20252712 AMAQI
1st Aug 2025351 AMAQI
1st Aug 2025382 AMAQI
1st Aug 2025393 AMAQI
25°C23/28°C
1st Aug 2025404 AMAQI
1st Aug 2025385 AMAQI
1st Aug 2025376 AMAQI
1st Aug 2025407 AMAQI
1st Aug 2025388 AMAQI
1st Aug 2025399 AMAQI
1st Aug 20252810 AMAQI
1st Aug 20254811 AMAQI
1st Aug 20254512 PMAQI
1st Aug 2025421 PMAQI
1st Aug 2025342 PMAQI
1st Aug 2025283 PMAQI
1st Aug 2025404 PMAQI
1st Aug 2025305 PMAQI
1st Aug 2025386 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025298 PMAQI
1st Aug 2025299 PMAQI
1st Aug 20253010 PMAQI
1st Aug 20252811 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025341 AMAQI
2nd Aug 2025392 AMAQI
2nd Aug 2025403 AMAQI
26°C23/29°C
2nd Aug 2025404 AMAQI
2nd Aug 2025385 AMAQI
2nd Aug 2025406 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025398 AMAQI
2nd Aug 2025349 AMAQI
2nd Aug 20253410 AMAQI
2nd Aug 20254211 AMAQI
2nd Aug 20252712 PMAQI
2nd Aug 2025381 PMAQI
2nd Aug 2025462 PMAQI
2nd Aug 2025483 PMAQI
2nd Aug 2025444 PMAQI
2nd Aug 2025445 PMAQI
2nd Aug 2025486 PMAQI
2nd Aug 2025527 PMAQI
2nd Aug 2025398 PMAQI
2nd Aug 2025389 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253611 PMAQI
3rd Aug 20252912 AMAQI
3rd Aug 2025341 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI
28°C25/35°C
3rd Aug 2025384 AMAQI
3rd Aug 2025395 AMAQI
3rd Aug 2025386 AMAQI
3rd Aug 2025387 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025459 AMAQI
3rd Aug 20254510 AMAQI
3rd Aug 20255011 AMAQI
3rd Aug 20255812 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025483 PMAQI
3rd Aug 2025444 PMAQI
3rd Aug 2025505 PMAQI
3rd Aug 2025516 PMAQI
3rd Aug 2025447 PMAQI
3rd Aug 2025428 PMAQI
3rd Aug 2025359 PMAQI
3rd Aug 20253810 PMAQI
3rd Aug 20253611 PMAQI
4th Aug 20253412 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025392 AMAQI
4th Aug 2025383 AMAQI
27°C25/31°C
4th Aug 2025404 AMAQI
4th Aug 2025425 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025407 AMAQI
4th Aug 2025438 AMAQI
4th Aug 2025539 AMAQI
4th Aug 20255910 AMAQI
4th Aug 20256811 AMAQI
4th Aug 20257212 PMAQI
4th Aug 2025681 PMAQI
4th Aug 2025782 PMAQI
4th Aug 2025723 PMAQI
4th Aug 2025784 PMAQI
4th Aug 2025765 PMAQI
4th Aug 2025696 PMAQI
4th Aug 2025667 PMAQI
4th Aug 2025628 PMAQI
4th Aug 2025579 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20254611 PMAQI
5th Aug 20254712 AMAQI
5th Aug 2025421 AMAQI
5th Aug 2025402 AMAQI
5th Aug 2025403 AMAQI
29°C25/34°C
5th Aug 2025464 AMAQI
4 AM5th Aug 2025495 AMAQI
5th Aug 2025456 AMAQI
5th Aug 2025467 AMAQI
5th Aug 2025478 AMAQI
5th Aug 2025529 AMAQI
5th Aug 20256010 AMAQI
5th Aug 20255911 AMAQI
11 AM5th Aug 20256412 PMAQI
5th Aug 2025541 PMAQI
6 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
11 AM - 12 PM
51AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
4 AM - 10 AM
47AQI
7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 12 PM (Avg. 51), while the lowest AQI was between 4 AM to 10 AM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 3 AM
45AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
7 PM - 11 PM
43AQI
5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 45), while the lowest AQI was between 7 PM to 11 PM (Avg. 43).
2025 Days Vs Air Quality
Hitachi Naka, Ibaraki, Japan
2025
91%
196
9%
19
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
196 DaysModerate
19 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% 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 Naka, 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
31AQI
31AQI
2nd January 2025
30AQI
30AQI
3rd January 2025
25AQI
25AQI
4th January 2025
26AQI
26AQI
5th January 2025
33AQI
33AQI
6th January 2025
51AQI
51AQI
7th January 2025
29AQI
29AQI
8th January 2025
36AQI
36AQI
9th January 2025
32AQI
32AQI
10th January 2025
31AQI
31AQI
11th January 2025
28AQI
28AQI
12th January 2025
28AQI
28AQI
13th January 2025
28AQI
28AQI
14th January 2025
35AQI
35AQI
15th January 2025
36AQI
36AQI
16th January 2025
34AQI
34AQI
17th January 2025
31AQI
31AQI
18th January 2025
31AQI
31AQI
19th January 2025
40AQI
40AQI
20th January 2025
34AQI
34AQI
21st January 2025
40AQI
40AQI
22nd January 2025
34AQI
34AQI
23rd January 2025
40AQI
40AQI
24th January 2025
35AQI
35AQI
25th January 2025
34AQI
34AQI
26th January 2025
32AQI
32AQI
27th January 2025
33AQI
33AQI
28th January 2025
36AQI
36AQI
29th January 2025
33AQI
33AQI
30th January 2025
32AQI
32AQI
31st January 2025
29AQI
29AQI
1st February 2025
31AQI
31AQI
2nd February 2025
28AQI
28AQI
3rd February 2025
30AQI
30AQI
4th February 2025
29AQI
29AQI
5th February 2025
30AQI
30AQI
6th February 2025
30AQI
30AQI
7th February 2025
30AQI
30AQI
8th February 2025
29AQI
29AQI
9th February 2025
30AQI
30AQI
10th February 2025
29AQI
29AQI
11th February 2025
30AQI
30AQI
12th February 2025
41AQI
41AQI
13th February 2025
33AQI
33AQI
14th February 2025
34AQI
34AQI
15th February 2025
30AQI
30AQI
16th February 2025
33AQI
33AQI
17th February 2025
34AQI
34AQI
18th February 2025
31AQI
31AQI
19th February 2025
32AQI
32AQI
20th February 2025
29AQI
29AQI
21st February 2025
33AQI
33AQI
22nd February 2025
31AQI
31AQI
23rd February 2025
31AQI
31AQI
24th February 2025
32AQI
32AQI
25th February 2025
34AQI
34AQI
26th February 2025
39AQI
39AQI
27th February 2025
41AQI
41AQI
28th February 2025
47AQI
47AQI
1st March 2025
46AQI
46AQI
2nd March 2025
54AQI
54AQI
3rd March 2025
35AQI
35AQI
4th March 2025
39AQI
39AQI
5th March 2025
26AQI
26AQI
6th March 2025
32AQI
32AQI
7th March 2025
32AQI
32AQI
8th March 2025
33AQI
33AQI
9th March 2025
32AQI
32AQI
10th March 2025
35AQI
35AQI
11th March 2025
38AQI
38AQI
12th March 2025
41AQI
41AQI
13th March 2025
41AQI
41AQI
14th March 2025
36AQI
36AQI
15th March 2025
32AQI
32AQI
16th March 2025
23AQI
23AQI
17th March 2025
20AQI
20AQI
18th March 2025
25AQI
25AQI
19th March 2025
20AQI
20AQI
20th March 2025
24AQI
24AQI
21st March 2025
37AQI
37AQI
22nd March 2025
51AQI
51AQI
23rd March 2025
47AQI
47AQI
24th March 2025
42AQI
42AQI
25th March 2025
65AQI
65AQI
26th March 2025
64AQI
64AQI
27th March 2025
67AQI
67AQI
28th March 2025
45AQI
45AQI
29th March 2025
39AQI
39AQI
30th March 2025
35AQI
35AQI
31st March 2025
34AQI
34AQI
1st April 2025
28AQI
28AQI
2nd April 2025
24AQI
24AQI
3rd April 2025
21AQI
21AQI
4th April 2025
20AQI
20AQI
5th April 2025
24AQI
24AQI
6th April 2025
23AQI
23AQI
7th April 2025
31AQI
31AQI
8th April 2025
37AQI
37AQI
9th April 2025
28AQI
28AQI
10th April 2025
46AQI
46AQI
11th April 2025
43AQI
43AQI
12th April 2025
35AQI
35AQI
13th April 2025
28AQI
28AQI
14th April 2025
33AQI
33AQI
15th April 2025
27AQI
27AQI
16th April 2025
27AQI
27AQI
17th April 2025
42AQI
42AQI
18th April 2025
51AQI
51AQI
19th April 2025
61AQI
61AQI
20th April 2025
52AQI
52AQI
21st April 2025
45AQI
45AQI
22nd April 2025
48AQI
48AQI
23rd April 2025
31AQI
31AQI
24th April 2025
35AQI
35AQI
25th April 2025
38AQI
38AQI
26th April 2025
47AQI
47AQI
27th April 2025
49AQI
49AQI
28th April 2025
51AQI
51AQI
29th April 2025
34AQI
34AQI
30th April 2025
41AQI
41AQI
1st May 2025
34AQI
34AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
31AQI
31AQI
4th May 2025
34AQI
34AQI
5th May 2025
33AQI
33AQI
6th May 2025
28AQI
28AQI
7th May 2025
24AQI
24AQI
8th May 2025
28AQI
28AQI
9th May 2025
29AQI
29AQI
10th May 2025
22AQI
22AQI
11th May 2025
26AQI
26AQI
12th May 2025
20AQI
20AQI
13th May 2025
36AQI
36AQI
14th May 2025
31AQI
31AQI
15th May 2025
39AQI
39AQI
16th May 2025
43AQI
43AQI
17th May 2025
28AQI
28AQI
18th May 2025
47AQI
47AQI
19th May 2025
37AQI
37AQI
20th May 2025
65AQI
65AQI
21st May 2025
52AQI
52AQI
22nd May 2025
49AQI
49AQI
23rd May 2025
44AQI
44AQI
24th May 2025
40AQI
40AQI
25th May 2025
28AQI
28AQI
26th May 2025
28AQI
28AQI
27th May 2025
26AQI
26AQI
28th May 2025
23AQI
23AQI
29th May 2025
25AQI
25AQI
30th May 2025
23AQI
23AQI
31st May 2025
17AQI
17AQI
1st June 2025
19AQI
19AQI
2nd June 2025
31AQI
31AQI
3rd June 2025
32AQI
32AQI
4th June 2025
28AQI
28AQI
5th June 2025
42AQI
42AQI
6th June 2025
46AQI
46AQI
7th June 2025
53AQI
53AQI
8th June 2025
61AQI
61AQI
9th June 2025
49AQI
49AQI
10th June 2025
36AQI
36AQI
11th June 2025
37AQI
37AQI
12th June 2025
40AQI
40AQI
13th June 2025
37AQI
37AQI
14th June 2025
35AQI
35AQI
15th June 2025
32AQI
32AQI
16th June 2025
29AQI
29AQI
17th June 2025
40AQI
40AQI
18th June 2025
35AQI
35AQI
19th June 2025
36AQI
36AQI
20th June 2025
33AQI
33AQI
21st June 2025
31AQI
31AQI
22nd June 2025
24AQI
24AQI
23rd June 2025
26AQI
26AQI
24th June 2025
25AQI
25AQI
25th June 2025
23AQI
23AQI
26th June 2025
23AQI
23AQI
27th June 2025
27AQI
27AQI
28th June 2025
29AQI
29AQI
29th June 2025
35AQI
35AQI
30th June 2025
40AQI
40AQI
1st July 2025
39AQI
39AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
44AQI
44AQI
4th July 2025
41AQI
41AQI
5th July 2025
48AQI
48AQI
6th July 2025
58AQI
58AQI
7th July 2025
72AQI
72AQI
8th July 2025
73AQI
73AQI
9th July 2025
73AQI
73AQI
10th July 2025
56AQI
56AQI
11th July 2025
49AQI
49AQI
12th July 2025
49AQI
49AQI
13th July 2025
50AQI
50AQI
14th July 2025
45AQI
45AQI
15th July 2025
43AQI
43AQI
16th July 2025
42AQI
42AQI
17th July 2025
42AQI
42AQI
18th July 2025
41AQI
41AQI
19th July 2025
38AQI
38AQI
20th July 2025
38AQI
38AQI
21st July 2025
41AQI
41AQI
22nd July 2025
40AQI
40AQI
23rd July 2025
41AQI
41AQI
24th July 2025
41AQI
41AQI
25th July 2025
42AQI
42AQI
26th July 2025
42AQI
42AQI
27th July 2025
40AQI
40AQI
28th July 2025
39AQI
39AQI
29th July 2025
37AQI
37AQI
30th July 2025
35AQI
35AQI
31st July 2025
34AQI
34AQI
1st August 2025
34AQI
34AQI
2nd August 2025
38AQI
38AQI
3rd August 2025
40AQI
40AQI
33AQI
33AQI
38AQI
37AQI
33AQI
34AQI
46AQI
37AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202536AQI
30
1
28
26
5
26
4
29
2
28
2
26
5
3
196
19
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
February33AQI
202434AQI
30
1
29
27
4
26
4
28
3
26
4
18
13
31
27
3
31
29
1
31
333
33
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
August26AQI
202335AQI
29
2
25
3
27
4
22
8
26
5
25
5
26
5
29
2
29
1
30
1
22
7
29
2
319
45
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
August28AQI
202236AQI
28
2
21
30
1
28
2
30
1
22
8
18
3
1
28
30
1
28
2
31
295
20
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
August21AQI
202133AQI
30
1
26
2
29
2
28
2
29
2
26
4
31
29
2
30
31
30
30
1
349
16
Highest AQI recorded in
June38AQI
Lowest AQI recorded in
January28AQI
202031AQI
11
1
20
1
18
27
3
26
1
24
7
19
29
2
20
7
7
1
201
23
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
December25AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
36AQILeast Polluted Year Recorded
2020(Avg.)
31AQIHitachi Naka's annual 2025 AQI (36) shows an average percentage change of 7.8% (worsened AQI) compared to previous years: 2020 (31), 2021 (33), 2022 (36), 2023 (35), 2024 (34).
