Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Hitachiomiya, 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

Hitachiomiya, Ibaraki, Japan

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
16th Aug 2023
58AQI
Lowest AQI recorded on
14th Aug 2021
16AQI

Same Day Analysis (19th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 20th Aug - 21st Aug 2025

Hitachiomiya, Ibaraki, Japan

AQI
Day
Night
.

4 AM20th Aug 2025

6 PM

3 AM21st Aug 2025

Day time
Avg. Highest Time
4PM20th Aug

58AQI

Avg. Lowest Time
7AM20th Aug

40AQI

Night time
Avg. Highest Time
7PM20th Aug

53AQI

Avg. Lowest Time
1AM21st Aug

40AQI

In the last 24 hours,

Hitachiomiya's AQI reached its highest point of 58 at 4 PM during the Day, while the lowest point, 40, was recorded at 1 AM during the Night between 20th Aug and 21st Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Hitachiomiya, Ibaraki, Japan

JulAug
22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st
Day
Night
22nd Jul 2025404 AMAQI
22nd Jul 2025425 AMAQI
22nd Jul 2025416 AMAQI
22nd Jul 2025427 AMAQI
22nd Jul 2025428 AMAQI
22nd Jul 2025399 AMAQI
22nd Jul 20254310 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20255312 PMAQI
22nd Jul 2025541 PMAQI
22nd Jul 2025532 PMAQI
22nd Jul 2025543 PMAQI
22nd Jul 2025504 PMAQI
22nd Jul 2025515 PMAQI
22nd Jul 2025426 PMAQI
22nd Jul 2025327 PMAQI
22nd Jul 2025318 PMAQI
22nd Jul 2025349 PMAQI
22nd Jul 20253410 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253612 AMAQI
23rd Jul 2025401 AMAQI
23rd Jul 2025402 AMAQI
23rd Jul 2025403 AMAQI

27°C24/31°C

23rd Jul 2025404 AMAQI
23rd Jul 2025425 AMAQI
23rd Jul 2025426 AMAQI
23rd Jul 2025427 AMAQI
23rd Jul 2025428 AMAQI
23rd Jul 2025419 AMAQI
23rd Jul 20254410 AMAQI
23rd Jul 20255211 AMAQI
23rd Jul 20255312 PMAQI
23rd Jul 2025541 PMAQI
23rd Jul 2025562 PMAQI
23rd Jul 2025563 PMAQI
23rd Jul 2025564 PMAQI
23rd Jul 2025545 PMAQI
23rd Jul 2025516 PMAQI
23rd Jul 2025497 PMAQI
23rd Jul 2025498 PMAQI
23rd Jul 2025449 PMAQI
23rd Jul 20254310 PMAQI
23rd Jul 20254411 PMAQI
24th Jul 20254112 AMAQI
24th Jul 2025421 AMAQI
24th Jul 2025422 AMAQI
24th Jul 2025403 AMAQI

27°C24/31°C

24th Jul 2025424 AMAQI
24th Jul 2025445 AMAQI
24th Jul 2025436 AMAQI
24th Jul 2025437 AMAQI
24th Jul 2025438 AMAQI
24th Jul 2025399 AMAQI
24th Jul 20254410 AMAQI
24th Jul 20255211 AMAQI
24th Jul 20255912 PMAQI
24th Jul 2025581 PMAQI
24th Jul 2025602 PMAQI
24th Jul 2025563 PMAQI
24th Jul 2025544 PMAQI
24th Jul 2025545 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025537 PMAQI
24th Jul 2025528 PMAQI
24th Jul 2025489 PMAQI
24th Jul 20255010 PMAQI
24th Jul 20254911 PMAQI
25th Jul 20254512 AMAQI
25th Jul 2025431 AMAQI
25th Jul 2025432 AMAQI
25th Jul 2025443 AMAQI

27°C24/31°C

25th Jul 2025444 AMAQI
25th Jul 2025475 AMAQI
25th Jul 2025466 AMAQI
25th Jul 2025467 AMAQI
25th Jul 2025468 AMAQI
25th Jul 2025489 AMAQI
25th Jul 20255610 AMAQI
25th Jul 20256011 AMAQI
25th Jul 20256012 PMAQI
25th Jul 2025611 PMAQI
25th Jul 2025582 PMAQI
25th Jul 2025563 PMAQI
25th Jul 2025574 PMAQI
25th Jul 2025565 PMAQI
25th Jul 2025536 PMAQI
25th Jul 2025507 PMAQI
25th Jul 2025478 PMAQI
25th Jul 2025489 PMAQI
25th Jul 20254810 PMAQI
25th Jul 20254611 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025441 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025463 AMAQI

27°C24/31°C

26th Jul 2025474 AMAQI
26th Jul 2025485 AMAQI
26th Jul 2025486 AMAQI
26th Jul 2025497 AMAQI
26th Jul 2025488 AMAQI
26th Jul 2025449 AMAQI
26th Jul 20254610 AMAQI
26th Jul 20256311 AMAQI
26th Jul 20255612 PMAQI
26th Jul 2025531 PMAQI
26th Jul 2025552 PMAQI
26th Jul 2025563 PMAQI
26th Jul 2025564 PMAQI
26th Jul 2025565 PMAQI
26th Jul 2025576 PMAQI
26th Jul 2025537 PMAQI
26th Jul 2025488 PMAQI
26th Jul 2025409 PMAQI
26th Jul 20253910 PMAQI
26th Jul 20253811 PMAQI
27th Jul 20254112 AMAQI
27th Jul 2025461 AMAQI
27th Jul 2025482 AMAQI
27th Jul 2025493 AMAQI

27°C24/31°C

27th Jul 2025484 AMAQI
27th Jul 2025495 AMAQI
27th Jul 2025496 AMAQI
27th Jul 2025497 AMAQI
27th Jul 2025498 AMAQI
27th Jul 2025429 AMAQI
27th Jul 20253810 AMAQI
27th Jul 20254011 AMAQI
27th Jul 20254212 PMAQI
27th Jul 2025451 PMAQI
27th Jul 2025462 PMAQI
27th Jul 2025503 PMAQI
27th Jul 2025524 PMAQI
27th Jul 2025495 PMAQI
27th Jul 2025506 PMAQI
27th Jul 2025447 PMAQI
27th Jul 2025448 PMAQI
27th Jul 2025429 PMAQI
27th Jul 20253910 PMAQI
27th Jul 20253911 PMAQI
28th Jul 20254012 AMAQI
28th Jul 2025451 AMAQI
28th Jul 2025482 AMAQI
28th Jul 2025483 AMAQI

27°C24/32°C

28th Jul 2025484 AMAQI
28th Jul 2025465 AMAQI
28th Jul 2025466 AMAQI
28th Jul 2025477 AMAQI
28th Jul 2025468 AMAQI
28th Jul 2025399 AMAQI
28th Jul 20254210 AMAQI
28th Jul 20254811 AMAQI
28th Jul 20255012 PMAQI
28th Jul 2025511 PMAQI
28th Jul 2025482 PMAQI
28th Jul 2025443 PMAQI
28th Jul 2025464 PMAQI
28th Jul 2025485 PMAQI
28th Jul 2025436 PMAQI
28th Jul 2025467 PMAQI
28th Jul 2025468 PMAQI
28th Jul 2025469 PMAQI
28th Jul 20254410 PMAQI
28th Jul 20254411 PMAQI
29th Jul 20254412 AMAQI
29th Jul 2025461 AMAQI
29th Jul 2025472 AMAQI
29th Jul 2025443 AMAQI

27°C24/31°C

29th Jul 2025454 AMAQI
29th Jul 2025465 AMAQI
29th Jul 2025456 AMAQI
29th Jul 2025457 AMAQI
29th Jul 2025468 AMAQI
29th Jul 2025459 AMAQI
29th Jul 20254710 AMAQI
29th Jul 20255211 AMAQI
29th Jul 20255012 PMAQI
29th Jul 2025551 PMAQI
29th Jul 2025502 PMAQI
29th Jul 2025433 PMAQI
29th Jul 2025304 PMAQI
29th Jul 2025275 PMAQI
29th Jul 2025256 PMAQI
29th Jul 2025207 PMAQI
29th Jul 2025228 PMAQI
29th Jul 2025319 PMAQI
29th Jul 20253110 PMAQI
29th Jul 20253111 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025431 AMAQI
30th Jul 2025452 AMAQI
30th Jul 2025463 AMAQI

26°C23/31°C

30th Jul 2025474 AMAQI
30th Jul 2025485 AMAQI
30th Jul 2025476 AMAQI
30th Jul 2025477 AMAQI
30th Jul 2025478 AMAQI
30th Jul 2025279 AMAQI
30th Jul 20252410 AMAQI
30th Jul 20253211 AMAQI
30th Jul 20253312 PMAQI
30th Jul 2025251 PMAQI
30th Jul 2025322 PMAQI
30th Jul 2025323 PMAQI
30th Jul 2025344 PMAQI
30th Jul 2025345 PMAQI
30th Jul 2025386 PMAQI
30th Jul 2025377 PMAQI
30th Jul 2025388 PMAQI
30th Jul 2025429 PMAQI
30th Jul 20254210 PMAQI
30th Jul 20254211 PMAQI
31st Jul 20254312 AMAQI
31st Jul 2025441 AMAQI
31st Jul 2025452 AMAQI
31st Jul 2025453 AMAQI

25°C22/28°C

31st Jul 2025434 AMAQI
31st Jul 2025435 AMAQI
31st Jul 2025436 AMAQI
31st Jul 2025437 AMAQI
31st Jul 2025438 AMAQI
31st Jul 2025439 AMAQI
31st Jul 20254310 AMAQI
31st Jul 20254011 AMAQI
31st Jul 20253312 PMAQI
31st Jul 2025341 PMAQI
31st Jul 2025302 PMAQI
31st Jul 2025303 PMAQI
31st Jul 2025284 PMAQI
31st Jul 2025285 PMAQI
31st Jul 2025276 PMAQI
31st Jul 2025287 PMAQI
31st Jul 2025298 PMAQI
31st Jul 2025309 PMAQI
31st Jul 20253010 PMAQI
31st Jul 20252711 PMAQI
1st Aug 20253012 AMAQI
1st Aug 2025361 AMAQI
1st Aug 2025382 AMAQI
1st Aug 2025403 AMAQI

24°C22/27°C

1st Aug 2025404 AMAQI
1st Aug 2025385 AMAQI
1st Aug 2025396 AMAQI
1st Aug 2025407 AMAQI
1st Aug 2025378 AMAQI
1st Aug 2025369 AMAQI
1st Aug 20253010 AMAQI
1st Aug 20254311 AMAQI
1st Aug 20255112 PMAQI
1st Aug 2025441 PMAQI
1st Aug 2025352 PMAQI
1st Aug 2025303 PMAQI
1st Aug 2025444 PMAQI
1st Aug 2025415 PMAQI
1st Aug 2025396 PMAQI
1st Aug 2025287 PMAQI
1st Aug 2025288 PMAQI
1st Aug 2025309 PMAQI
1st Aug 20253310 PMAQI
1st Aug 20253011 PMAQI
2nd Aug 20252812 AMAQI
2nd Aug 2025341 AMAQI
2nd Aug 2025392 AMAQI
2nd Aug 2025403 AMAQI

25°C22/27°C

2nd Aug 2025394 AMAQI
2nd Aug 2025405 AMAQI
2nd Aug 2025416 AMAQI
2nd Aug 2025387 AMAQI
2nd Aug 2025408 AMAQI
2nd Aug 2025409 AMAQI
2nd Aug 20253810 AMAQI
2nd Aug 20253311 AMAQI
2nd Aug 20252912 PMAQI
2nd Aug 2025401 PMAQI
2nd Aug 2025482 PMAQI
2nd Aug 2025513 PMAQI
2nd Aug 2025454 PMAQI
2nd Aug 2025495 PMAQI
2nd Aug 2025536 PMAQI
2nd Aug 2025547 PMAQI
2nd Aug 2025408 PMAQI
2nd Aug 2025379 PMAQI
2nd Aug 20253510 PMAQI
2nd Aug 20253711 PMAQI
3rd Aug 20253112 AMAQI
3rd Aug 2025351 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025373 AMAQI

27°C24/33°C

3rd Aug 2025384 AMAQI
3rd Aug 2025385 AMAQI
3rd Aug 2025376 AMAQI
3rd Aug 2025387 AMAQI
3rd Aug 2025388 AMAQI
3rd Aug 2025429 AMAQI
3rd Aug 20254810 AMAQI
3rd Aug 20254611 AMAQI
3rd Aug 20255712 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025562 PMAQI
3rd Aug 2025473 PMAQI
3rd Aug 2025444 PMAQI
3rd Aug 2025475 PMAQI
3rd Aug 2025546 PMAQI
3rd Aug 2025547 PMAQI
3rd Aug 2025448 PMAQI
3rd Aug 2025359 PMAQI
3rd Aug 20253610 PMAQI
3rd Aug 20253511 PMAQI
4th Aug 20253212 AMAQI
4th Aug 2025371 AMAQI
4th Aug 2025382 AMAQI
4th Aug 2025393 AMAQI

26°C24/29°C

4th Aug 2025404 AMAQI
4th Aug 2025425 AMAQI
4th Aug 2025426 AMAQI
4th Aug 2025407 AMAQI
4th Aug 2025428 AMAQI
4th Aug 2025479 AMAQI
4th Aug 20255610 AMAQI
4th Aug 20256411 AMAQI
4th Aug 20256812 PMAQI
4th Aug 2025641 PMAQI
4th Aug 2025732 PMAQI
4th Aug 2025643 PMAQI
4th Aug 2025754 PMAQI
4th Aug 2025765 PMAQI
4th Aug 2025686 PMAQI
4th Aug 2025647 PMAQI
4th Aug 2025628 PMAQI
4th Aug 2025579 PMAQI
4th Aug 20255410 PMAQI
4th Aug 20254811 PMAQI
5th Aug 20254712 AMAQI
5th Aug 2025421 AMAQI
5th Aug 2025402 AMAQI
5th Aug 2025393 AMAQI

27°C24/31°C

5th Aug 2025454 AMAQI
5th Aug 2025485 AMAQI
5th Aug 2025446 AMAQI
5th Aug 2025437 AMAQI
5th Aug 2025488 AMAQI
5th Aug 2025529 AMAQI
5th Aug 20255310 AMAQI
5th Aug 20256011 AMAQI
5th Aug 20255912 PMAQI
5th Aug 2025541 PMAQI
5th Aug 2025532 PMAQI
5th Aug 2025543 PMAQI
5th Aug 2025574 PMAQI
5th Aug 2025545 PMAQI
5th Aug 2025546 PMAQI
5th Aug 2025437 PMAQI
5th Aug 2025458 PMAQI
5th Aug 2025449 PMAQI
5th Aug 20253810 PMAQI
5th Aug 20253711 PMAQI
6th Aug 20253912 AMAQI
6th Aug 2025451 AMAQI
6th Aug 2025462 AMAQI
6th Aug 2025483 AMAQI

29°C25/33°C

6th Aug 2025514 AMAQI
6th Aug 2025505 AMAQI
6th Aug 2025506 AMAQI
6th Aug 2025507 AMAQI
6th Aug 2025488 AMAQI
6th Aug 2025359 AMAQI
6th Aug 20253710 AMAQI
6th Aug 20253411 AMAQI
6th Aug 20254512 PMAQI
6th Aug 2025391 PMAQI
6th Aug 2025452 PMAQI
6th Aug 2025403 PMAQI
6th Aug 2025404 PMAQI
6th Aug 2025445 PMAQI
6th Aug 2025406 PMAQI
6th Aug 2025437 PMAQI
6th Aug 2025478 PMAQI
6th Aug 2025429 PMAQI
6th Aug 20254410 PMAQI
6th Aug 20254011 PMAQI
7th Aug 20253712 AMAQI
7th Aug 2025461 AMAQI
7th Aug 2025482 AMAQI
7th Aug 2025463 AMAQI

27°C24/32°C

7th Aug 2025454 AMAQI
7th Aug 2025455 AMAQI
7th Aug 2025456 AMAQI
7th Aug 2025427 AMAQI
7th Aug 2025438 AMAQI
7th Aug 2025289 AMAQI
7th Aug 20253110 AMAQI
7th Aug 20253411 AMAQI
7th Aug 20252612 PMAQI
7th Aug 2025221 PMAQI
7th Aug 2025242 PMAQI
7th Aug 2025223 PMAQI
7th Aug 2025264 PMAQI
7th Aug 2025285 PMAQI
7th Aug 2025296 PMAQI
7th Aug 2025287 PMAQI
7th Aug 2025328 PMAQI
7th Aug 2025389 PMAQI
7th Aug 20253610 PMAQI
7th Aug 20253411 PMAQI
8th Aug 20253612 AMAQI
8th Aug 2025441 AMAQI
8th Aug 2025442 AMAQI
8th Aug 2025453 AMAQI

26°C23/30°C

8th Aug 2025444 AMAQI
8th Aug 2025405 AMAQI
8th Aug 2025406 AMAQI
8th Aug 2025407 AMAQI
8th Aug 2025398 AMAQI
8th Aug 2025339 AMAQI
8th Aug 20253110 AMAQI
8th Aug 20253011 AMAQI
8th Aug 20252712 PMAQI
8th Aug 2025291 PMAQI
8th Aug 2025282 PMAQI
8th Aug 2025283 PMAQI
8th Aug 2025324 PMAQI
8th Aug 2025355 PMAQI
8th Aug 2025346 PMAQI
8th Aug 2025367 PMAQI
8th Aug 2025328 PMAQI
8th Aug 2025349 PMAQI
8th Aug 20253410 PMAQI
8th Aug 20253411 PMAQI
9th Aug 20253512 AMAQI
9th Aug 2025401 AMAQI
9th Aug 2025402 AMAQI
9th Aug 2025423 AMAQI

24°C22/29°C

9th Aug 2025414 AMAQI
9th Aug 2025405 AMAQI
9th Aug 2025396 AMAQI
9th Aug 2025407 AMAQI
9th Aug 2025398 AMAQI
9th Aug 2025289 AMAQI
9th Aug 20252710 AMAQI
9th Aug 20253111 AMAQI
9th Aug 20252712 PMAQI
9th Aug 2025261 PMAQI
9th Aug 2025292 PMAQI
9th Aug 2025243 PMAQI
9th Aug 2025254 PMAQI
9th Aug 2025265 PMAQI
9th Aug 2025266 PMAQI
9th Aug 2025237 PMAQI
9th Aug 2025278 PMAQI
9th Aug 2025339 PMAQI
9th Aug 20253410 PMAQI
9th Aug 20253411 PMAQI
10th Aug 20253512 AMAQI
10th Aug 2025391 AMAQI
10th Aug 2025392 AMAQI
10th Aug 2025403 AMAQI

25°C21/29°C

10th Aug 2025394 AMAQI
10th Aug 2025385 AMAQI
10th Aug 2025386 AMAQI
10th Aug 2025377 AMAQI
10th Aug 2025388 AMAQI
10th Aug 2025379 AMAQI
10th Aug 20254010 AMAQI
10th Aug 20254311 AMAQI
10th Aug 20254312 PMAQI
10th Aug 2025361 PMAQI
10th Aug 2025302 PMAQI
10th Aug 2025283 PMAQI
10th Aug 2025254 PMAQI
10th Aug 2025215 PMAQI
10th Aug 2025226 PMAQI
10th Aug 2025207 PMAQI
10th Aug 2025248 PMAQI
10th Aug 2025319 PMAQI
10th Aug 20253010 PMAQI
10th Aug 20253011 PMAQI
11th Aug 20253112 AMAQI
11th Aug 2025361 AMAQI
11th Aug 2025382 AMAQI
11th Aug 2025383 AMAQI

24°C23/25°C

11th Aug 2025404 AMAQI
11th Aug 2025385 AMAQI
11th Aug 2025386 AMAQI
11th Aug 2025387 AMAQI
11th Aug 2025388 AMAQI
11th Aug 2025249 AMAQI
11th Aug 20252110 AMAQI
11th Aug 20252611 AMAQI
11th Aug 20252412 PMAQI
11th Aug 2025231 PMAQI
11th Aug 2025262 PMAQI
11th Aug 2025323 PMAQI
11th Aug 2025334 PMAQI
11th Aug 2025425 PMAQI
11th Aug 2025386 PMAQI
11th Aug 2025327 PMAQI
11th Aug 2025348 PMAQI
11th Aug 2025329 PMAQI
11th Aug 20253310 PMAQI
11th Aug 20253211 PMAQI
12th Aug 20253112 AMAQI
12th Aug 2025401 AMAQI
12th Aug 2025402 AMAQI
12th Aug 2025383 AMAQI

25°C25/26°C

12th Aug 2025344 AMAQI
12th Aug 2025345 AMAQI
12th Aug 2025356 AMAQI
12th Aug 2025357 AMAQI
12th Aug 2025368 AMAQI
12th Aug 2025249 AMAQI
12th Aug 20252510 AMAQI
12th Aug 20253011 AMAQI
12th Aug 20252512 PMAQI
12th Aug 2025211 PMAQI
12th Aug 2025222 PMAQI
12th Aug 2025213 PMAQI
12th Aug 2025264 PMAQI
12th Aug 2025275 PMAQI
12th Aug 2025266 PMAQI
12th Aug 2025297 PMAQI
12th Aug 2025298 PMAQI
12th Aug 2025329 PMAQI
12th Aug 20253010 PMAQI
12th Aug 20252911 PMAQI
13th Aug 20253212 AMAQI
13th Aug 2025361 AMAQI
13th Aug 2025362 AMAQI
13th Aug 2025373 AMAQI

25°C23/27°C

13th Aug 2025354 AMAQI
13th Aug 2025335 AMAQI
13th Aug 2025336 AMAQI
13th Aug 2025347 AMAQI
13th Aug 2025348 AMAQI
13th Aug 2025269 AMAQI
13th Aug 20252610 AMAQI
13th Aug 20252011 AMAQI
13th Aug 20252112 PMAQI
13th Aug 2025271 PMAQI
13th Aug 2025242 PMAQI
13th Aug 2025283 PMAQI
13th Aug 2025274 PMAQI
13th Aug 2025305 PMAQI
13th Aug 2025286 PMAQI
13th Aug 2025287 PMAQI
13th Aug 2025288 PMAQI
13th Aug 2025309 PMAQI
13th Aug 20253110 PMAQI
13th Aug 20253011 PMAQI
14th Aug 20252912 AMAQI
14th Aug 2025341 AMAQI
14th Aug 2025352 AMAQI
14th Aug 2025353 AMAQI

24°C22/28°C

14th Aug 2025344 AMAQI
14th Aug 2025325 AMAQI
14th Aug 2025346 AMAQI
14th Aug 2025327 AMAQI
14th Aug 2025328 AMAQI
14th Aug 2025299 AMAQI
14th Aug 20253410 AMAQI
14th Aug 20253211 AMAQI
14th Aug 20253112 PMAQI
14th Aug 2025311 PMAQI
14th Aug 2025282 PMAQI
14th Aug 2025333 PMAQI
14th Aug 2025304 PMAQI
14th Aug 2025275 PMAQI
14th Aug 2025256 PMAQI
14th Aug 2025227 PMAQI
14th Aug 2025328 PMAQI
14th Aug 2025319 PMAQI
14th Aug 20253010 PMAQI
14th Aug 20252811 PMAQI
15th Aug 20253412 AMAQI
15th Aug 2025331 AMAQI
15th Aug 2025322 AMAQI
15th Aug 2025323 AMAQI

24°C22/27°C

15th Aug 2025324 AMAQI
15th Aug 2025365 AMAQI
15th Aug 2025326 AMAQI
15th Aug 2025347 AMAQI
15th Aug 2025348 AMAQI
15th Aug 2025289 AMAQI
15th Aug 20252910 AMAQI
15th Aug 20253711 AMAQI
15th Aug 20253412 PMAQI
15th Aug 2025261 PMAQI
15th Aug 2025242 PMAQI
15th Aug 2025213 PMAQI
15th Aug 2025244 PMAQI
15th Aug 2025295 PMAQI
15th Aug 2025256 PMAQI
15th Aug 2025257 PMAQI
15th Aug 2025308 PMAQI
15th Aug 2025309 PMAQI
15th Aug 20253010 PMAQI
15th Aug 20253011 PMAQI
16th Aug 20252812 AMAQI
16th Aug 2025331 AMAQI
16th Aug 2025342 AMAQI
16th Aug 2025343 AMAQI

26°C23/31°C

16th Aug 2025354 AMAQI
16th Aug 2025355 AMAQI
16th Aug 2025356 AMAQI
16th Aug 2025347 AMAQI
16th Aug 2025348 AMAQI
16th Aug 2025249 AMAQI
16th Aug 20253410 AMAQI
16th Aug 20253411 AMAQI
16th Aug 20253412 PMAQI
16th Aug 2025321 PMAQI
16th Aug 2025352 PMAQI
16th Aug 2025383 PMAQI
16th Aug 2025344 PMAQI
16th Aug 2025365 PMAQI
16th Aug 2025326 PMAQI
16th Aug 2025327 PMAQI
16th Aug 2025318 PMAQI
16th Aug 2025339 PMAQI
16th Aug 20253210 PMAQI
16th Aug 20253011 PMAQI
17th Aug 20253212 AMAQI
17th Aug 2025341 AMAQI
17th Aug 2025342 AMAQI
17th Aug 2025363 AMAQI

25°C23/27°C

17th Aug 2025364 AMAQI
17th Aug 2025365 AMAQI
17th Aug 2025346 AMAQI
17th Aug 2025357 AMAQI
17th Aug 2025358 AMAQI
17th Aug 2025309 AMAQI
17th Aug 20253610 AMAQI
17th Aug 20253411 AMAQI
17th Aug 20253612 PMAQI
17th Aug 2025441 PMAQI
17th Aug 2025472 PMAQI
17th Aug 2025473 PMAQI
17th Aug 2025414 PMAQI
17th Aug 2025405 PMAQI
17th Aug 2025396 PMAQI
17th Aug 2025497 PMAQI
17th Aug 2025388 PMAQI
17th Aug 2025329 PMAQI
17th Aug 20253310 PMAQI
17th Aug 20253511 PMAQI
18th Aug 20253112 AMAQI
18th Aug 2025341 AMAQI
18th Aug 2025382 AMAQI
18th Aug 2025353 AMAQI

27°C23/31°C

18th Aug 2025364 AMAQI
18th Aug 2025385 AMAQI
18th Aug 2025406 AMAQI
18th Aug 2025397 AMAQI
18th Aug 2025388 AMAQI
18th Aug 2025369 AMAQI
18th Aug 20253810 AMAQI
18th Aug 20254211 AMAQI
18th Aug 20254212 PMAQI
18th Aug 2025381 PMAQI
18th Aug 2025402 PMAQI
18th Aug 2025443 PMAQI
18th Aug 2025514 PMAQI
18th Aug 2025555 PMAQI
18th Aug 2025446 PMAQI
18th Aug 2025507 PMAQI
18th Aug 2025448 PMAQI
18th Aug 2025409 PMAQI
18th Aug 20253810 PMAQI
18th Aug 20253611 PMAQI
19th Aug 20253212 AMAQI
19th Aug 2025371 AMAQI
19th Aug 2025372 AMAQI
19th Aug 2025363 AMAQI

26°C24/29°C

19th Aug 2025374 AMAQI
19th Aug 2025385 AMAQI
19th Aug 2025386 AMAQI
19th Aug 2025387 AMAQI
19th Aug 2025388 AMAQI
19th Aug 2025369 AMAQI
19th Aug 20254110 AMAQI
19th Aug 20255211 AMAQI
19th Aug 20255012 PMAQI
19th Aug 2025451 PMAQI
19th Aug 2025472 PMAQI
19th Aug 2025373 PMAQI
19th Aug 2025434 PMAQI
19th Aug 2025485 PMAQI
19th Aug 2025446 PMAQI
19th Aug 2025467 PMAQI
19th Aug 2025458 PMAQI
19th Aug 2025429 PMAQI
19th Aug 20253910 PMAQI
19th Aug 20253511 PMAQI
20th Aug 20254012 AMAQI
20th Aug 2025391 AMAQI
20th Aug 2025392 AMAQI
20th Aug 2025383 AMAQI

26°C23/31°C

20th Aug 2025404 AMAQI
20th Aug 2025415 AMAQI
20th Aug 2025426 AMAQI
20th Aug 2025407 AMAQI
20th Aug 2025428 AMAQI
20th Aug 2025499 AMAQI
20th Aug 20254810 AMAQI
20th Aug 20255311 AMAQI
20th Aug 20255112 PMAQI
20th Aug 2025541 PMAQI
20th Aug 2025562 PMAQI
20th Aug 2025543 PMAQI
20th Aug 2025584 PMAQI
20th Aug 2025505 PMAQI
20th Aug 2025556 PMAQI
20th Aug 2025537 PMAQI
20th Aug 2025538 PMAQI
20th Aug 2025489 PMAQI
20th Aug 20254510 PMAQI
20th Aug 20254711 PMAQI
21st Aug 20254212 AMAQI
21st Aug 2025401 AMAQI
21st Aug 2025412 AMAQI
21st Aug 2025423 AMAQI

27°C24/32°C

21st Aug 2025434 AMAQI
4 AM
21st Aug 2025435 AMAQI
21st Aug 2025446 AMAQI
21st Aug 2025447 AMAQI
21st Aug 2025468 AMAQI
21st Aug 2025569 AMAQI
21st Aug 20254610 AMAQI
21st Aug 20255111 AMAQI
11 AM
21st Aug 20254912 PMAQI
6 PM
11 PM
3 AM

--°C/°C

Day time
Avg. Highest Time
11 AM - 6 PM

42AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
9 AM

37AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 6 PM (Avg. 42), while the lowest AQI was between 9 AM to 9 AM (Avg. 37).
Night time
Avg. Highest Time
1 AM - 11 PM

39AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM

36AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 11 PM (Avg. 39), while the lowest AQI was between 12 AM to 12 AM (Avg. 36).

2025 Days Vs Air Quality

Hitachiomiya, Ibaraki, Japan

2025

91%

210

9%

21

Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)

Good
210 Days
Moderate
21 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 91%

Health Risk Level:

Very Low

In 2025, 91% of 233 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

Hitachiomiya, 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
29AQI
2nd January 2025
29AQI
3rd January 2025
25AQI
4th January 2025
27AQI
5th January 2025
32AQI
6th January 2025
49AQI
7th January 2025
29AQI
8th January 2025
35AQI
9th January 2025
27AQI
10th January 2025
29AQI
11th January 2025
26AQI
12th January 2025
29AQI
13th January 2025
28AQI
14th January 2025
30AQI
15th January 2025
30AQI
16th January 2025
28AQI
17th January 2025
28AQI
18th January 2025
29AQI
19th January 2025
44AQI
20th January 2025
34AQI
21st January 2025
43AQI
22nd January 2025
34AQI
23rd January 2025
39AQI
24th January 2025
34AQI
25th January 2025
33AQI
26th January 2025
31AQI
27th January 2025
32AQI
28th January 2025
33AQI
29th January 2025
30AQI
30th January 2025
30AQI
31st January 2025
29AQI
1st February 2025
30AQI
2nd February 2025
29AQI
3rd February 2025
31AQI
4th February 2025
30AQI
5th February 2025
32AQI
6th February 2025
30AQI
7th February 2025
33AQI
8th February 2025
31AQI
9th February 2025
30AQI
10th February 2025
30AQI
11th February 2025
31AQI
12th February 2025
37AQI
13th February 2025
32AQI
14th February 2025
32AQI
15th February 2025
31AQI
16th February 2025
34AQI
17th February 2025
35AQI
18th February 2025
31AQI
19th February 2025
32AQI
20th February 2025
30AQI
21st February 2025
32AQI
22nd February 2025
32AQI
23rd February 2025
32AQI
24th February 2025
33AQI
25th February 2025
36AQI
26th February 2025
38AQI
27th February 2025
41AQI
28th February 2025
48AQI
1st March 2025
45AQI
2nd March 2025
53AQI
3rd March 2025
36AQI
4th March 2025
37AQI
5th March 2025
27AQI
6th March 2025
32AQI
7th March 2025
33AQI
8th March 2025
34AQI
9th March 2025
33AQI
10th March 2025
38AQI
11th March 2025
40AQI
12th March 2025
42AQI
13th March 2025
44AQI
14th March 2025
37AQI
15th March 2025
36AQI
16th March 2025
23AQI
17th March 2025
20AQI
18th March 2025
24AQI
19th March 2025
18AQI
20th March 2025
25AQI
21st March 2025
34AQI
22nd March 2025
47AQI
23rd March 2025
48AQI
24th March 2025
49AQI
25th March 2025
64AQI
26th March 2025
63AQI
27th March 2025
69AQI
28th March 2025
46AQI
29th March 2025
39AQI
30th March 2025
35AQI
31st March 2025
33AQI
1st April 2025
26AQI
2nd April 2025
22AQI
3rd April 2025
21AQI
4th April 2025
19AQI
5th April 2025
26AQI
6th April 2025
26AQI
7th April 2025
33AQI
8th April 2025
37AQI
9th April 2025
28AQI
10th April 2025
46AQI
11th April 2025
41AQI
12th April 2025
37AQI
13th April 2025
28AQI
14th April 2025
29AQI
15th April 2025
27AQI
16th April 2025
24AQI
17th April 2025
42AQI
18th April 2025
51AQI
19th April 2025
63AQI
20th April 2025
57AQI
21st April 2025
45AQI
22nd April 2025
51AQI
23rd April 2025
28AQI
24th April 2025
39AQI
25th April 2025
37AQI
26th April 2025
48AQI
27th April 2025
47AQI
28th April 2025
52AQI
29th April 2025
33AQI
30th April 2025
43AQI
1st May 2025
37AQI
2nd May 2025
29AQI
3rd May 2025
34AQI
4th May 2025
33AQI
5th May 2025
35AQI
6th May 2025
29AQI
7th May 2025
27AQI
8th May 2025
29AQI
9th May 2025
32AQI
10th May 2025
20AQI
11th May 2025
22AQI
12th May 2025
19AQI
13th May 2025
36AQI
14th May 2025
34AQI
15th May 2025
41AQI
16th May 2025
46AQI
17th May 2025
27AQI
18th May 2025
42AQI
19th May 2025
36AQI
20th May 2025
61AQI
21st May 2025
56AQI
22nd May 2025
52AQI
23rd May 2025
46AQI
24th May 2025
40AQI
25th May 2025
28AQI
26th May 2025
29AQI
27th May 2025
25AQI
28th May 2025
25AQI
29th May 2025
28AQI
30th May 2025
22AQI
31st May 2025
17AQI
1st June 2025
20AQI
2nd June 2025
31AQI
3rd June 2025
34AQI
4th June 2025
26AQI
5th June 2025
41AQI
6th June 2025
46AQI
7th June 2025
53AQI
8th June 2025
61AQI
9th June 2025
52AQI
10th June 2025
41AQI
11th June 2025
32AQI
12th June 2025
39AQI
13th June 2025
35AQI
14th June 2025
36AQI
15th June 2025
28AQI
16th June 2025
29AQI
17th June 2025
36AQI
18th June 2025
36AQI
19th June 2025
38AQI
20th June 2025
36AQI
21st June 2025
35AQI
22nd June 2025
31AQI
23rd June 2025
31AQI
24th June 2025
31AQI
25th June 2025
29AQI
26th June 2025
27AQI
27th June 2025
32AQI
28th June 2025
32AQI
29th June 2025
37AQI
30th June 2025
41AQI
1st July 2025
40AQI
2nd July 2025
42AQI
3rd July 2025
46AQI
4th July 2025
44AQI
5th July 2025
49AQI
6th July 2025
55AQI
7th July 2025
67AQI
8th July 2025
68AQI
9th July 2025
70AQI
10th July 2025
57AQI
11th July 2025
48AQI
12th July 2025
50AQI
13th July 2025
50AQI
14th July 2025
43AQI
15th July 2025
41AQI
16th July 2025
44AQI
17th July 2025
42AQI
18th July 2025
41AQI
19th July 2025
36AQI
20th July 2025
38AQI
21st July 2025
44AQI
22nd July 2025
42AQI
23rd July 2025
46AQI
24th July 2025
48AQI
25th July 2025
50AQI
26th July 2025
49AQI
27th July 2025
45AQI
28th July 2025
46AQI
29th July 2025
39AQI
30th July 2025
39AQI
31st July 2025
36AQI
1st August 2025
36AQI
2nd August 2025
40AQI
3rd August 2025
42AQI
4th August 2025
53AQI
5th August 2025
47AQI
6th August 2025
44AQI
7th August 2025
35AQI
8th August 2025
36AQI
9th August 2025
33AQI
10th August 2025
33AQI
11th August 2025
33AQI
12th August 2025
30AQI
13th August 2025
30AQI
14th August 2025
31AQI
15th August 2025
30AQI
16th August 2025
33AQI
17th August 2025
37AQI
18th August 2025
40AQI
19th August 2025
40AQI

32AQI

33AQI

39AQI

37AQI

33AQI

36AQI

47AQI

37AQI

No. of days

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

202537AQI

31
28
27
4
25
5
28
3
27
3
26
5
18
1
210
21

Highest AQI recorded in

July

47AQI

Lowest AQI recorded in

January

32AQI

202433AQI

31
29
27
4
24
6
29
2
28
2
21
10
31
27
3
31
29
1
31
338
28

Highest AQI recorded in

April

44AQI

Lowest AQI recorded in

August

26AQI

202337AQI

30
1
26
2
26
5
23
7
24
7
25
5
26
4
29
2
28
2
31
24
5
30
1
322
41

Highest AQI recorded in

April

45AQI

Lowest AQI recorded in

January

31AQI

202235AQI

30
21
29
2
24
6
27
4
20
10
18
5
1
28
30
1
30
31
289
28

Highest AQI recorded in

June

41AQI

Lowest AQI recorded in

December

27AQI

202132AQI

31
26
2
26
3
28
2
29
2
26
4
31
30
1
30
30
1
30
31
348
15

Highest AQI recorded in

June

38AQI

Lowest AQI recorded in

January

25AQI

202031AQI

11
21
18
24
6
31
23
8
19
29
2
28
2
10
1
214
19

Highest AQI recorded in

August

42AQI

Lowest AQI recorded in

September

25AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
37AQI
Least Polluted Year Recorded
2020(Avg.)
31AQI

Hitachiomiya's annual 2025 AQI (37) shows an average percentage change of 9.7% (worsened AQI) compared to previous years: 2020 (31), 2021 (32), 2022 (35), 2023 (37), 2024 (33).