Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
16th Aug 2023
58AQI
Lowest AQI recorded on
26th Aug 2023
13AQI

Same Day Analysis (12th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 25 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 11th Aug - 12th Aug 2026

Hitachi, Ibaraki, Japan

AQI
Day
Night
.

4 AM11th Aug 2026

6 PM

3 AM12th Aug 2026

Day time
Avg. Highest Time
5AM11th Aug

48AQI

Avg. Lowest Time
1PM11th Aug

21AQI

Night time
Avg. Highest Time
7PM11th Aug

42AQI

Avg. Lowest Time
3AM12th Aug

21AQI

In the last 24 hours,

Hitachi's AQI reached its highest point of 48 at 5 AM during the Day, while the lowest point, 21, was recorded at 3 AM during the Night between 11th Aug and 12th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Hitachi, Ibaraki, Japan

JulAug
14th - 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 - 10th10th - 11th11th - 12th12th
Day
Night
14th Jul 2026264 AMAQI
14th Jul 2026305 AMAQI
14th Jul 2026296 AMAQI
14th Jul 2026307 AMAQI
14th Jul 2026258 AMAQI
14th Jul 2026309 AMAQI
14th Jul 20263110 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262012 PMAQI
14th Jul 2026201 PMAQI
14th Jul 2026202 PMAQI
14th Jul 2026223 PMAQI
14th Jul 2026234 PMAQI
14th Jul 2026305 PMAQI
14th Jul 2026296 PMAQI
14th Jul 2026317 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026319 PMAQI
14th Jul 20263410 PMAQI
14th Jul 20263211 PMAQI
15th Jul 20263612 AMAQI
15th Jul 2026311 AMAQI
15th Jul 2026602 AMAQI
15th Jul 2026593 AMAQI

24°C21/28°C

15th Jul 2026584 AMAQI
15th Jul 2026565 AMAQI
15th Jul 2026636 AMAQI
15th Jul 2026567 AMAQI
15th Jul 2026538 AMAQI
15th Jul 2026549 AMAQI
15th Jul 20265310 AMAQI
15th Jul 20266011 AMAQI
15th Jul 20265512 PMAQI
15th Jul 2026581 PMAQI
15th Jul 2026562 PMAQI
15th Jul 2026583 PMAQI
15th Jul 2026514 PMAQI
15th Jul 2026335 PMAQI
15th Jul 2026336 PMAQI
15th Jul 2026637 PMAQI
15th Jul 2026608 PMAQI
15th Jul 2026579 PMAQI
15th Jul 20266410 PMAQI
15th Jul 20263211 PMAQI
16th Jul 20266812 AMAQI
16th Jul 2026491 AMAQI
16th Jul 2026462 AMAQI
16th Jul 2026403 AMAQI

26°C23/29°C

16th Jul 2026464 AMAQI
16th Jul 2026335 AMAQI
16th Jul 2026306 AMAQI
16th Jul 2026327 AMAQI
16th Jul 2026308 AMAQI
16th Jul 2026349 AMAQI
16th Jul 20263210 AMAQI
16th Jul 20262911 AMAQI
16th Jul 20263112 PMAQI
16th Jul 2026291 PMAQI
16th Jul 2026322 PMAQI
16th Jul 2026893 PMAQI
16th Jul 2026944 PMAQI
16th Jul 2026955 PMAQI
16th Jul 2026786 PMAQI
16th Jul 2026737 PMAQI
16th Jul 2026698 PMAQI
16th Jul 2026689 PMAQI
16th Jul 20266410 PMAQI
16th Jul 20266611 PMAQI
17th Jul 20266712 AMAQI
17th Jul 2026661 AMAQI
17th Jul 2026672 AMAQI
17th Jul 2026623 AMAQI

25°C23/28°C

17th Jul 2026664 AMAQI
17th Jul 2026605 AMAQI
17th Jul 2026496 AMAQI
17th Jul 2026407 AMAQI
17th Jul 2026408 AMAQI
17th Jul 2026369 AMAQI
17th Jul 20262510 AMAQI
17th Jul 20262711 AMAQI
17th Jul 20263612 PMAQI
17th Jul 2026291 PMAQI
17th Jul 2026272 PMAQI
17th Jul 2026273 PMAQI
17th Jul 2026274 PMAQI
17th Jul 2026255 PMAQI
17th Jul 2026276 PMAQI
17th Jul 2026217 PMAQI
17th Jul 2026178 PMAQI
17th Jul 2026109 PMAQI
17th Jul 2026810 PMAQI
17th Jul 20261211 PMAQI
18th Jul 20261012 AMAQI
18th Jul 202691 AMAQI
18th Jul 202682 AMAQI
18th Jul 2026103 AMAQI

24°C23/26°C

18th Jul 2026124 AMAQI
18th Jul 202695 AMAQI
18th Jul 2026116 AMAQI
18th Jul 202697 AMAQI
18th Jul 2026108 AMAQI
18th Jul 202689 AMAQI
18th Jul 2026810 AMAQI
18th Jul 2026811 AMAQI
18th Jul 2026812 PMAQI
18th Jul 202671 PMAQI
18th Jul 202682 PMAQI
18th Jul 202683 PMAQI
18th Jul 202684 PMAQI
18th Jul 2026105 PMAQI
18th Jul 202686 PMAQI
18th Jul 202667 PMAQI
18th Jul 202688 PMAQI
18th Jul 202689 PMAQI
18th Jul 2026810 PMAQI
18th Jul 2026611 PMAQI
19th Jul 2026812 AMAQI
19th Jul 2026161 AMAQI
19th Jul 2026252 AMAQI
19th Jul 2026253 AMAQI

24°C22/26°C

19th Jul 2026314 AMAQI
19th Jul 2026255 AMAQI
19th Jul 2026236 AMAQI
19th Jul 2026277 AMAQI
19th Jul 2026258 AMAQI
19th Jul 2026319 AMAQI
19th Jul 20262710 AMAQI
19th Jul 20262511 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026251 PMAQI
19th Jul 2026272 PMAQI
19th Jul 2026293 PMAQI
19th Jul 2026254 PMAQI
19th Jul 2026255 PMAQI
19th Jul 2026256 PMAQI
19th Jul 2026277 PMAQI
19th Jul 2026258 PMAQI
19th Jul 2026279 PMAQI
19th Jul 20263810 PMAQI
19th Jul 20264211 PMAQI
20th Jul 20263312 AMAQI
20th Jul 2026401 AMAQI
20th Jul 2026422 AMAQI
20th Jul 2026343 AMAQI

25°C22/27°C

20th Jul 2026274 AMAQI
20th Jul 2026275 AMAQI
20th Jul 2026296 AMAQI
20th Jul 2026317 AMAQI
20th Jul 2026258 AMAQI
20th Jul 2026219 AMAQI
20th Jul 20262310 AMAQI
20th Jul 20262911 AMAQI
20th Jul 20262912 PMAQI
20th Jul 2026551 PMAQI
20th Jul 2026382 PMAQI
20th Jul 2026403 PMAQI
20th Jul 2026404 PMAQI
20th Jul 2026405 PMAQI
20th Jul 2026426 PMAQI
20th Jul 2026447 PMAQI
20th Jul 2026488 PMAQI
20th Jul 2026489 PMAQI
20th Jul 20264610 PMAQI
20th Jul 20264411 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026441 AMAQI
21st Jul 2026422 AMAQI
21st Jul 2026403 AMAQI

26°C23/30°C

21st Jul 2026364 AMAQI
21st Jul 2026385 AMAQI
21st Jul 2026386 AMAQI
21st Jul 2026387 AMAQI
21st Jul 2026408 AMAQI
21st Jul 2026369 AMAQI
21st Jul 20265210 AMAQI
21st Jul 20265511 AMAQI
21st Jul 2026621 PMAQI
21st Jul 2026622 PMAQI
21st Jul 2026693 PMAQI
21st Jul 2026604 PMAQI
21st Jul 2026515 PMAQI
21st Jul 2026626 PMAQI
21st Jul 20261037 PMAQI
21st Jul 2026668 PMAQI
21st Jul 2026709 PMAQI
21st Jul 20265610 PMAQI
21st Jul 20265511 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026551 AMAQI
22nd Jul 2026542 AMAQI
22nd Jul 2026533 AMAQI

26°C24/28°C

22nd Jul 2026504 AMAQI
22nd Jul 2026505 AMAQI
22nd Jul 2026486 AMAQI
22nd Jul 2026467 AMAQI
22nd Jul 2026448 AMAQI
22nd Jul 2026549 AMAQI
22nd Jul 20265710 AMAQI
22nd Jul 20266511 AMAQI
22nd Jul 20267612 PMAQI
22nd Jul 2026721 PMAQI
22nd Jul 2026722 PMAQI
22nd Jul 2026733 PMAQI
22nd Jul 2026794 PMAQI
22nd Jul 2026925 PMAQI
22nd Jul 2026896 PMAQI
22nd Jul 2026727 PMAQI
22nd Jul 2026748 PMAQI
22nd Jul 2026669 PMAQI
22nd Jul 20266610 PMAQI
22nd Jul 20266411 PMAQI
23rd Jul 20266612 AMAQI
23rd Jul 2026701 AMAQI
23rd Jul 2026812 AMAQI
23rd Jul 2026903 AMAQI

26°C24/31°C

23rd Jul 2026764 AMAQI
23rd Jul 2026725 AMAQI
23rd Jul 2026826 AMAQI
23rd Jul 2026667 AMAQI
23rd Jul 2026818 AMAQI
23rd Jul 2026849 AMAQI
23rd Jul 20266910 AMAQI
23rd Jul 20267611 AMAQI
23rd Jul 20265212 PMAQI
23rd Jul 2026361 PMAQI
23rd Jul 2026382 PMAQI
23rd Jul 2026213 PMAQI
23rd Jul 2026214 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026196 PMAQI
23rd Jul 2026257 PMAQI
23rd Jul 2026318 PMAQI
23rd Jul 2026339 PMAQI
23rd Jul 20262910 PMAQI
23rd Jul 20262911 PMAQI
24th Jul 20262312 AMAQI
24th Jul 2026121 AMAQI
24th Jul 2026122 AMAQI
24th Jul 2026193 AMAQI

25°C23/30°C

24th Jul 2026124 AMAQI
24th Jul 2026125 AMAQI
24th Jul 2026126 AMAQI
24th Jul 202687 AMAQI
24th Jul 2026128 AMAQI
24th Jul 202689 AMAQI
24th Jul 20261210 AMAQI
24th Jul 20262511 AMAQI
24th Jul 20261912 PMAQI
24th Jul 2026271 PMAQI
24th Jul 2026272 PMAQI
24th Jul 2026213 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026215 PMAQI
24th Jul 2026196 PMAQI
24th Jul 2026177 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026129 PMAQI
24th Jul 2026610 PMAQI
24th Jul 2026811 PMAQI
25th Jul 2026612 AMAQI
25th Jul 2026121 AMAQI
25th Jul 202672 AMAQI
25th Jul 202683 AMAQI

23°C22/25°C

25th Jul 202684 AMAQI
25th Jul 2026125 AMAQI
25th Jul 2026196 AMAQI
25th Jul 2026217 AMAQI
25th Jul 2026168 AMAQI
25th Jul 2026169 AMAQI
25th Jul 20262510 AMAQI
25th Jul 20262511 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026251 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026253 PMAQI
25th Jul 2026294 PMAQI
25th Jul 2026255 PMAQI
25th Jul 2026256 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026299 PMAQI
25th Jul 20262710 PMAQI
25th Jul 20263111 PMAQI
26th Jul 20262912 AMAQI
26th Jul 2026271 AMAQI
26th Jul 2026292 AMAQI
26th Jul 2026253 AMAQI

24°C22/25°C

26th Jul 2026384 AMAQI
26th Jul 2026295 AMAQI
26th Jul 2026256 AMAQI
26th Jul 2026337 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026469 AMAQI
26th Jul 20262910 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026214 PMAQI
26th Jul 2026215 PMAQI
26th Jul 2026216 PMAQI
26th Jul 2026217 PMAQI
26th Jul 2026238 PMAQI
26th Jul 2026219 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262111 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026211 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026233 AMAQI

24°C23/27°C

27th Jul 2026294 AMAQI
27th Jul 2026255 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026447 AMAQI
27th Jul 2026258 AMAQI
27th Jul 2026429 AMAQI
27th Jul 20264210 AMAQI
27th Jul 20264211 AMAQI
27th Jul 20262512 PMAQI
27th Jul 2026291 PMAQI
27th Jul 2026272 PMAQI
27th Jul 2026293 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026296 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026298 PMAQI
27th Jul 2026259 PMAQI
27th Jul 20262510 PMAQI
27th Jul 20262311 PMAQI
28th Jul 20262312 AMAQI
28th Jul 2026211 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026213 AMAQI

23°C21/25°C

28th Jul 2026234 AMAQI
28th Jul 2026215 AMAQI
28th Jul 2026216 AMAQI
28th Jul 2026237 AMAQI
28th Jul 2026258 AMAQI
28th Jul 2026259 AMAQI
28th Jul 20262110 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026231 PMAQI
28th Jul 2026212 PMAQI
28th Jul 2026213 PMAQI
28th Jul 2026234 PMAQI
28th Jul 2026215 PMAQI
28th Jul 2026216 PMAQI
28th Jul 2026217 PMAQI
28th Jul 2026218 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20262110 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20262112 AMAQI
29th Jul 2026231 AMAQI
29th Jul 2026212 AMAQI
29th Jul 2026213 AMAQI

23°C21/25°C

29th Jul 2026214 AMAQI
29th Jul 2026215 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026239 AMAQI
29th Jul 20262510 AMAQI
29th Jul 20262311 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026252 PMAQI
29th Jul 2026233 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026237 PMAQI
29th Jul 2026218 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262111 PMAQI
30th Jul 20262312 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026253 AMAQI

24°C22/28°C

30th Jul 2026254 AMAQI
30th Jul 2026255 AMAQI
30th Jul 2026216 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262311 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026251 PMAQI
30th Jul 2026272 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026275 PMAQI
30th Jul 2026296 PMAQI
30th Jul 2026317 PMAQI
30th Jul 2026388 PMAQI
30th Jul 2026319 PMAQI
30th Jul 20263310 PMAQI
30th Jul 20263111 PMAQI
31st Jul 20263112 AMAQI
31st Jul 2026311 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026273 AMAQI

26°C23/30°C

31st Jul 2026294 AMAQI
31st Jul 2026255 AMAQI
31st Jul 2026276 AMAQI
31st Jul 2026277 AMAQI
31st Jul 2026298 AMAQI
31st Jul 2026279 AMAQI
31st Jul 20262510 AMAQI
31st Jul 20262911 AMAQI
31st Jul 20263312 PMAQI
31st Jul 2026291 PMAQI
31st Jul 2026312 PMAQI
31st Jul 2026333 PMAQI
31st Jul 2026334 PMAQI
31st Jul 2026365 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026337 PMAQI
31st Jul 2026338 PMAQI
31st Jul 2026369 PMAQI
31st Jul 20263810 PMAQI
31st Jul 20263611 PMAQI
1st Aug 20263612 AMAQI
1st Aug 2026381 AMAQI
1st Aug 2026362 AMAQI
1st Aug 2026363 AMAQI

24°C23/28°C

1st Aug 2026334 AMAQI
1st Aug 2026365 AMAQI
1st Aug 2026316 AMAQI
1st Aug 2026337 AMAQI
1st Aug 2026368 AMAQI
1st Aug 2026339 AMAQI
1st Aug 20263610 AMAQI
1st Aug 20264211 AMAQI
1st Aug 20264212 PMAQI
1st Aug 2026441 PMAQI
1st Aug 2026462 PMAQI
1st Aug 2026523 PMAQI
1st Aug 2026534 PMAQI
1st Aug 2026535 PMAQI
1st Aug 2026676 PMAQI
1st Aug 2026657 PMAQI
1st Aug 2026628 PMAQI
1st Aug 2026659 PMAQI
1st Aug 20266310 PMAQI
1st Aug 20265711 PMAQI
2nd Aug 20266012 AMAQI
2nd Aug 2026571 AMAQI
2nd Aug 2026572 AMAQI
2nd Aug 2026533 AMAQI

25°C22/29°C

2nd Aug 2026544 AMAQI
2nd Aug 2026385 AMAQI
2nd Aug 2026276 AMAQI
2nd Aug 2026277 AMAQI
2nd Aug 2026218 AMAQI
2nd Aug 2026149 AMAQI
2nd Aug 2026810 AMAQI
2nd Aug 20261011 AMAQI
2nd Aug 20261912 PMAQI
2nd Aug 2026141 PMAQI
2nd Aug 2026212 PMAQI
2nd Aug 202683 PMAQI
2nd Aug 2026124 PMAQI
2nd Aug 2026125 PMAQI
2nd Aug 2026126 PMAQI
2nd Aug 2026127 PMAQI
2nd Aug 2026108 PMAQI
2nd Aug 202689 PMAQI
2nd Aug 20261010 PMAQI
2nd Aug 2026811 PMAQI
3rd Aug 2026812 AMAQI
3rd Aug 202661 AMAQI
3rd Aug 202682 AMAQI
3rd Aug 202683 AMAQI

24°C22/26°C

3rd Aug 202684 AMAQI
3rd Aug 202685 AMAQI
3rd Aug 2026106 AMAQI
3rd Aug 2026147 AMAQI
3rd Aug 2026178 AMAQI
3rd Aug 2026219 AMAQI
3rd Aug 20261910 AMAQI
3rd Aug 20261411 AMAQI
3rd Aug 20261912 PMAQI
3rd Aug 2026231 PMAQI
3rd Aug 2026122 PMAQI
3rd Aug 2026273 PMAQI
3rd Aug 2026274 PMAQI
3rd Aug 2026295 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026257 PMAQI
3rd Aug 2026218 PMAQI
3rd Aug 2026239 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262111 PMAQI
4th Aug 20262112 AMAQI
4th Aug 2026231 AMAQI
4th Aug 2026212 AMAQI
4th Aug 2026213 AMAQI

22°C21/23°C

4th Aug 2026234 AMAQI
4th Aug 2026215 AMAQI
4th Aug 2026216 AMAQI
4th Aug 2026237 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026239 AMAQI
4th Aug 20262310 AMAQI
4th Aug 20262311 AMAQI
4th Aug 20262312 PMAQI
4th Aug 2026251 PMAQI
4th Aug 2026252 PMAQI
4th Aug 2026253 PMAQI
4th Aug 2026214 PMAQI
4th Aug 2026255 PMAQI
4th Aug 2026256 PMAQI
4th Aug 2026257 PMAQI
4th Aug 2026258 PMAQI
4th Aug 2026259 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20262311 PMAQI
5th Aug 20262312 AMAQI
5th Aug 2026251 AMAQI
5th Aug 2026252 AMAQI
5th Aug 2026253 AMAQI

22°C19/24°C

5th Aug 2026254 AMAQI
5th Aug 2026255 AMAQI
5th Aug 2026236 AMAQI
5th Aug 2026237 AMAQI
5th Aug 2026218 AMAQI
5th Aug 2026259 AMAQI
5th Aug 20262510 AMAQI
5th Aug 20262511 AMAQI
5th Aug 20262512 PMAQI
5th Aug 2026251 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026233 PMAQI
5th Aug 2026234 PMAQI
5th Aug 2026235 PMAQI
5th Aug 2026256 PMAQI
5th Aug 2026257 PMAQI
5th Aug 2026258 PMAQI
5th Aug 2026219 PMAQI
5th Aug 20262110 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262112 AMAQI
6th Aug 2026211 AMAQI
6th Aug 2026212 AMAQI
6th Aug 2026233 AMAQI

23°C20/25°C

6th Aug 2026214 AMAQI
6th Aug 2026235 AMAQI
6th Aug 2026236 AMAQI
6th Aug 2026257 AMAQI
6th Aug 2026238 AMAQI
6th Aug 2026259 AMAQI
6th Aug 20262510 AMAQI
6th Aug 20262511 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026271 PMAQI
6th Aug 2026312 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026274 PMAQI
6th Aug 2026295 PMAQI
6th Aug 2026296 PMAQI
6th Aug 2026257 PMAQI
6th Aug 2026278 PMAQI
6th Aug 2026349 PMAQI
6th Aug 20263610 PMAQI
6th Aug 20263111 PMAQI
7th Aug 20262912 AMAQI
7th Aug 2026271 AMAQI
7th Aug 2026272 AMAQI
7th Aug 2026273 AMAQI

25°C23/28°C

7th Aug 2026254 AMAQI
7th Aug 2026275 AMAQI
7th Aug 2026296 AMAQI
7th Aug 2026297 AMAQI
7th Aug 2026298 AMAQI
7th Aug 2026299 AMAQI
7th Aug 20262910 AMAQI
7th Aug 20262911 AMAQI
7th Aug 20263112 PMAQI
7th Aug 2026331 PMAQI
7th Aug 2026252 PMAQI
7th Aug 2026213 PMAQI
7th Aug 2026214 PMAQI
7th Aug 2026255 PMAQI
7th Aug 2026256 PMAQI
7th Aug 2026257 PMAQI
7th Aug 2026258 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20262110 PMAQI
7th Aug 20262311 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026231 AMAQI
8th Aug 2026252 AMAQI
8th Aug 2026213 AMAQI

26°C23/28°C

8th Aug 2026214 AMAQI
8th Aug 2026235 AMAQI
8th Aug 2026236 AMAQI
8th Aug 2026237 AMAQI
8th Aug 2026218 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262310 AMAQI
8th Aug 20262311 AMAQI
8th Aug 20262112 PMAQI
8th Aug 2026231 PMAQI
8th Aug 2026212 PMAQI
8th Aug 2026233 PMAQI
8th Aug 2026234 PMAQI
8th Aug 2026215 PMAQI
8th Aug 2026216 PMAQI
8th Aug 2026277 PMAQI
8th Aug 2026278 PMAQI
8th Aug 2026339 PMAQI
8th Aug 20262110 PMAQI
8th Aug 20264011 PMAQI
9th Aug 20262912 AMAQI
9th Aug 2026271 AMAQI
9th Aug 2026252 AMAQI
9th Aug 2026363 AMAQI

25°C23/28°C

9th Aug 2026234 AMAQI
9th Aug 2026235 AMAQI
9th Aug 2026236 AMAQI
9th Aug 2026237 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026219 AMAQI
9th Aug 20262710 AMAQI
9th Aug 20262911 AMAQI
9th Aug 20263312 PMAQI
9th Aug 2026331 PMAQI
9th Aug 2026382 PMAQI
9th Aug 2026333 PMAQI
9th Aug 2026334 PMAQI
9th Aug 2026335 PMAQI
9th Aug 2026316 PMAQI
9th Aug 2026317 PMAQI
9th Aug 2026298 PMAQI
9th Aug 2026299 PMAQI
9th Aug 20263610 PMAQI
9th Aug 20263111 PMAQI
10th Aug 20263112 AMAQI
10th Aug 2026361 AMAQI
10th Aug 2026362 AMAQI
10th Aug 2026383 AMAQI

25°C23/27°C

10th Aug 2026424 AMAQI
10th Aug 2026445 AMAQI
10th Aug 2026596 AMAQI
10th Aug 2026387 AMAQI
10th Aug 2026238 AMAQI
10th Aug 2026219 AMAQI
10th Aug 20262110 AMAQI
10th Aug 20262111 AMAQI
10th Aug 20262312 PMAQI
10th Aug 2026291 PMAQI
10th Aug 2026292 PMAQI
10th Aug 2026333 PMAQI
10th Aug 2026294 PMAQI
10th Aug 2026385 PMAQI
10th Aug 2026336 PMAQI
10th Aug 2026367 PMAQI
10th Aug 2026368 PMAQI
10th Aug 2026339 PMAQI
10th Aug 20263110 PMAQI
10th Aug 20263611 PMAQI
11th Aug 20263112 AMAQI
11th Aug 2026311 AMAQI
11th Aug 2026402 AMAQI
11th Aug 2026483 AMAQI

23°C21/26°C

11th Aug 2026444 AMAQI
11th Aug 2026485 AMAQI
11th Aug 2026316 AMAQI
11th Aug 2026297 AMAQI
11th Aug 2026258 AMAQI
11th Aug 2026299 AMAQI
11th Aug 20262110 AMAQI
11th Aug 20262111 AMAQI
11th Aug 20262512 PMAQI
11th Aug 2026211 PMAQI
11th Aug 2026272 PMAQI
11th Aug 2026273 PMAQI
11th Aug 2026254 PMAQI
11th Aug 2026255 PMAQI
11th Aug 2026386 PMAQI
11th Aug 2026427 PMAQI
11th Aug 2026218 PMAQI
11th Aug 2026339 PMAQI
11th Aug 20263310 PMAQI
11th Aug 20263811 PMAQI
12th Aug 20263312 AMAQI
12th Aug 2026291 AMAQI
12th Aug 2026272 AMAQI
12th Aug 2026213 AMAQI

20°C19/23°C

12th Aug 2026234 AMAQI
4 AM
12th Aug 2026215 AMAQI
12th Aug 2026236 AMAQI
12th Aug 2026217 AMAQI
12th Aug 2026218 AMAQI
12th Aug 2026239 AMAQI
12th Aug 20264010 AMAQI
12th Aug 20263211 AMAQI
11 AM
12th Aug 20262712 PMAQI
12th Aug 2026291 PMAQI
12th Aug 2026212 PMAQI
12th Aug 2026213 PMAQI
12th Aug 2026234 PMAQI
12th Aug 2026235 PMAQI
12th Aug 2026216 PMAQI
6 PM
12th Aug 2026217 PMAQI
12th Aug 2026218 PMAQI
12th Aug 2026219 PMAQI
12th Aug 20262910 PMAQI
12th Aug 20262111 PMAQI
11 PM
3 AM

23°C20/24°C

Day time
Avg. Highest Time
4 AM

32AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
8 AM

28AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 32), while the lowest AQI was between 8 AM to 8 AM (Avg. 28).
Night time
Avg. Highest Time
7 PM - 8 PM

34AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
12 AM - 1 AM

31AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 PM to 8 PM (Avg. 34), while the lowest AQI was between 12 AM to 1 AM (Avg. 31).

2026 Days Vs Air Quality

Hitachi, Ibaraki, Japan

2026

86%

193

14%

31

Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)

Good
193 Days
Moderate
31 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2026, 86% of 224 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

Hitachi, 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
17AQI (US)
2nd January 2026
14AQI (US)
3rd January 2026
15AQI (US)
4th January 2026
22AQI (US)
5th January 2026
28AQI (US)
6th January 2026
24AQI (US)
7th January 2026
24AQI (US)
8th January 2026
31AQI (US)
9th January 2026
24AQI (US)
10th January 2026
26AQI (US)
11th January 2026
21AQI (US)
12th January 2026
15AQI (US)
13th January 2026
30AQI (US)
14th January 2026
13AQI (US)
15th January 2026
27AQI (US)
16th January 2026
39AQI (US)
17th January 2026
36AQI (US)
18th January 2026
20AQI (US)
19th January 2026
34AQI (US)
20th January 2026
32AQI (US)
21st January 2026
13AQI (US)
22nd January 2026
18AQI (US)
23rd January 2026
33AQI (US)
24th January 2026
33AQI (US)
25th January 2026
42AQI (US)
26th January 2026
30AQI (US)
27th January 2026
36AQI (US)
28th January 2026
27AQI (US)
29th January 2026
23AQI (US)
30th January 2026
33AQI (US)
31st January 2026
39AQI (US)
1st February 2026
34AQI (US)
2nd February 2026
11AQI (US)
3rd February 2026
17AQI (US)
4th February 2026
21AQI (US)
5th February 2026
37AQI (US)
6th February 2026
47AQI (US)
7th February 2026
11AQI (US)
8th February 2026
10AQI (US)
9th February 2026
32AQI (US)
10th February 2026
25AQI (US)
11th February 2026
38AQI (US)
12th February 2026
28AQI (US)
13th February 2026
34AQI (US)
14th February 2026
66AQI (US)
15th February 2026
66AQI (US)
16th February 2026
42AQI (US)
17th February 2026
15AQI (US)
18th February 2026
31AQI (US)
19th February 2026
30AQI (US)
20th February 2026
32AQI (US)
21st February 2026
45AQI (US)
22nd February 2026
42AQI (US)
23rd February 2026
41AQI (US)
24th February 2026
40AQI (US)
25th February 2026
35AQI (US)
26th February 2026
24AQI (US)
27th February 2026
43AQI (US)
28th February 2026
45AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
90AQI (US)
3rd March 2026
44AQI (US)
4th March 2026
67AQI (US)
5th March 2026
63AQI (US)
6th March 2026
52AQI (US)
7th March 2026
47AQI (US)
8th March 2026
49AQI (US)
9th March 2026
46AQI (US)
10th March 2026
56AQI (US)
11th March 2026
59AQI (US)
12th March 2026
69AQI (US)
13th March 2026
43AQI (US)
14th March 2026
48AQI (US)
15th March 2026
60AQI (US)
16th March 2026
62AQI (US)
17th March 2026
56AQI (US)
18th March 2026
61AQI (US)
19th March 2026
35AQI (US)
20th March 2026
35AQI (US)
21st March 2026
54AQI (US)
22nd March 2026
40AQI (US)
23rd March 2026
52AQI (US)
24th March 2026
57AQI (US)
25th March 2026
32AQI (US)
26th March 2026
19AQI (US)
27th March 2026
27AQI (US)
28th March 2026
47AQI (US)
29th March 2026
48AQI (US)
30th March 2026
53AQI (US)
31st March 2026
33AQI (US)
1st April 2026
17AQI (US)
2nd April 2026
29AQI (US)
3rd April 2026
47AQI (US)
4th April 2026
45AQI (US)
5th April 2026
36AQI (US)
6th April 2026
15AQI (US)
7th April 2026
32AQI (US)
8th April 2026
22AQI (US)
9th April 2026
32AQI (US)
10th April 2026
45AQI (US)
11th April 2026
21AQI (US)
12th April 2026
24AQI (US)
13th April 2026
33AQI (US)
14th April 2026
36AQI (US)
15th April 2026
41AQI (US)
16th April 2026
32AQI (US)
17th April 2026
37AQI (US)
18th April 2026
35AQI (US)
19th April 2026
40AQI (US)
20th April 2026
36AQI (US)
21st April 2026
40AQI (US)
22nd April 2026
46AQI (US)
23rd April 2026
36AQI (US)
24th April 2026
31AQI (US)
25th April 2026
44AQI (US)
26th April 2026
49AQI (US)
27th April 2026
47AQI (US)
28th April 2026
41AQI (US)
29th April 2026
36AQI (US)
30th April 2026
40AQI (US)
1st May 2026
48AQI (US)
2nd May 2026
51AQI (US)
3rd May 2026
43AQI (US)
4th May 2026
29AQI (US)
5th May 2026
26AQI (US)
6th May 2026
33AQI (US)
7th May 2026
34AQI (US)
8th May 2026
26AQI (US)
9th May 2026
25AQI (US)
10th May 2026
27AQI (US)
11th May 2026
30AQI (US)
12th May 2026
36AQI (US)
13th May 2026
44AQI (US)
14th May 2026
40AQI (US)
15th May 2026
33AQI (US)
16th May 2026
85AQI (US)
17th May 2026
69AQI (US)
18th May 2026
53AQI (US)
19th May 2026
49AQI (US)
20th May 2026
62AQI (US)
21st May 2026
59AQI (US)
22nd May 2026
61AQI (US)
23rd May 2026
54AQI (US)
24th May 2026
58AQI (US)
25th May 2026
47AQI (US)
26th May 2026
39AQI (US)
27th May 2026
25AQI (US)
28th May 2026
21AQI (US)
29th May 2026
17AQI (US)
30th May 2026
22AQI (US)
31st May 2026
27AQI (US)
1st June 2026
28AQI (US)
2nd June 2026
32AQI (US)
3rd June 2026
12AQI (US)
4th June 2026
12AQI (US)
5th June 2026
22AQI (US)
6th June 2026
23AQI (US)
7th June 2026
22AQI (US)
8th June 2026
27AQI (US)
9th June 2026
26AQI (US)
10th June 2026
11AQI (US)
11th June 2026
24AQI (US)
12th June 2026
24AQI (US)
13th June 2026
26AQI (US)
14th June 2026
29AQI (US)
15th June 2026
14AQI (US)
16th June 2026
16AQI (US)
17th June 2026
24AQI (US)
18th June 2026
25AQI (US)
19th June 2026
29AQI (US)
20th June 2026
22AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
19AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
21AQI (US)
25th June 2026
26AQI (US)
26th June 2026
29AQI (US)
27th June 2026
26AQI (US)
28th June 2026
29AQI (US)
29th June 2026
28AQI (US)
30th June 2026
24AQI (US)
1st July 2026
24AQI (US)
2nd July 2026
22AQI (US)
3rd July 2026
24AQI (US)
4th July 2026
25AQI (US)
5th July 2026
23AQI (US)
6th July 2026
24AQI (US)
7th July 2026
26AQI (US)
8th July 2026
19AQI (US)
9th July 2026
21AQI (US)
10th July 2026
25AQI (US)
11th July 2026
28AQI (US)
12th July 2026
28AQI (US)
13th July 2026
32AQI (US)
14th July 2026
27AQI (US)
15th July 2026
52AQI (US)
16th July 2026
52AQI (US)
17th July 2026
36AQI (US)
18th July 2026
9AQI (US)
19th July 2026
26AQI (US)
20th July 2026
36AQI (US)
21st July 2026
53AQI (US)
22nd July 2026
64AQI (US)
23rd July 2026
53AQI (US)
24th July 2026
16AQI (US)
25th July 2026
20AQI (US)
26th July 2026
26AQI (US)
27th July 2026
28AQI (US)
28th July 2026
22AQI (US)
29th July 2026
22AQI (US)
30th July 2026
26AQI (US)
31st July 2026
31AQI (US)
1st August 2026
46AQI (US)
2nd August 2026
24AQI (US)
3rd August 2026
17AQI (US)
4th August 2026
23AQI (US)
5th August 2026
24AQI (US)
6th August 2026
26AQI (US)
7th August 2026
26AQI (US)
8th August 2026
24AQI (US)
9th August 2026
29AQI (US)
10th August 2026
33AQI (US)
11th August 2026
31AQI (US)
12th August 2026
25AQI (US)
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

26AQI (US)

34AQI (US)

50AQI (US)

36AQI (US)

41AQI (US)

23AQI (US)

30AQI (US)

27AQI (US)

No. of days

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

202634AQI (US)

31
26
2
16
15
30
22
9
30
26
5
12
193
31

Highest AQI (US) recorded in

March

50AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202537AQI (US)

31
28
28
3
27
3
29
2
28
2
25
6
28
3
30
19
12
24
6
24
7
321
44

Highest AQI (US) recorded in

July

48AQI (US)

Lowest AQI (US) recorded in

January

28AQI (US)

202432AQI (US)

31
29
27
4
25
4
1
30
1
28
2
20
11
31
28
2
31
30
31
341
24
1

Highest AQI (US) recorded in

July

42AQI (US)

Lowest AQI (US) recorded in

December

25AQI (US)

202333AQI (US)

31
27
1
27
4
26
4
30
1
28
2
29
2
29
2
30
31
27
2
31
346
18

Highest AQI (US) recorded in

April

42AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

202232AQI (US)

30
21
29
2
26
4
30
1
26
4
17
4
1
28
31
30
31
300
15

Highest AQI (US) recorded in

April

39AQI (US)

Lowest AQI (US) recorded in

December

23AQI (US)

202130AQI (US)

29
2
12
19
2
28
2
30
1
26
4
31
31
30
31
30
31
328
11

Highest AQI (US) recorded in

March

40AQI (US)

Lowest AQI (US) recorded in

July

26AQI (US)

202032AQI (US)

11
1
21
16
2
26
4
31
25
6
19
30
1
28
2
15
222
16

Highest AQI (US) recorded in

June

39AQI (US)

Lowest AQI (US) recorded in

December

24AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
37AQI (US)
Least Polluted Year Recorded
2021(Avg.)
30AQI (US)

Hitachi's annual 2026 AQI (US) (34) shows an average percentage change of 4.5% (worsened AQI (US)) compared to previous years: 2020 (32), 2021 (30), 2022 (32), 2023 (33), 2024 (32), 2025 (37).