Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Honcho, Joetsu, Niigata, 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

Honcho, Joetsu, Niigata, Japan

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
4th Aug 2023
57AQI
Lowest AQI recorded on
30th Aug 2024
18AQI

Same Day Analysis (7th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 51 of Moderate air quality on the same day.

Day & Night AQI Trend: 5th Aug - 6th Aug 2026

Honcho, Joetsu, Niigata, Japan

AQI
Day
Night
.

4 AM5th Aug 2026

7 PM

3 AM6th Aug 2026

Day time
Avg. Highest Time
3PM5th Aug

40AQI

Avg. Lowest Time
9AM5th Aug

27AQI

Night time
Avg. Highest Time
1AM6th Aug

40AQI

Avg. Lowest Time
11PM5th Aug

33AQI

In the last 24 hours,

Honcho's AQI reached its highest point of 40 at 3 PM during the Day, while the lowest point, 27, was recorded at 9 AM during the Day between 5th Aug and 6th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Honcho, Joetsu, Niigata, Japan

JulAug
08th - 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
8th Jul 2026264 AMAQI
8th Jul 2026275 AMAQI
8th Jul 2026276 AMAQI
8th Jul 2026287 AMAQI
8th Jul 2026288 AMAQI
8th Jul 2026239 AMAQI
8th Jul 20262410 AMAQI
8th Jul 20262211 AMAQI
8th Jul 20262212 PMAQI
8th Jul 2026241 PMAQI
8th Jul 2026222 PMAQI
8th Jul 2026243 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026225 PMAQI
8th Jul 2026216 PMAQI
8th Jul 2026187 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026229 PMAQI
8th Jul 20262210 PMAQI
8th Jul 20262411 PMAQI
9th Jul 20262612 AMAQI
9th Jul 2026281 AMAQI
9th Jul 2026262 AMAQI
9th Jul 2026273 AMAQI

23°C19/27°C

9th Jul 2026244 AMAQI
9th Jul 2026245 AMAQI
9th Jul 2026246 AMAQI
9th Jul 2026247 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026229 AMAQI
9th Jul 20262410 AMAQI
9th Jul 20262211 AMAQI
9th Jul 20262212 PMAQI
9th Jul 2026201 PMAQI
9th Jul 2026222 PMAQI
9th Jul 2026233 PMAQI
9th Jul 2026244 PMAQI
9th Jul 2026245 PMAQI
9th Jul 2026236 PMAQI
9th Jul 2026247 PMAQI
9th Jul 2026248 PMAQI
9th Jul 2026249 PMAQI
9th Jul 20262410 PMAQI
9th Jul 20262811 PMAQI
10th Jul 20263012 AMAQI
10th Jul 2026271 AMAQI
10th Jul 2026282 AMAQI
10th Jul 2026263 AMAQI

25°C21/29°C

10th Jul 2026244 AMAQI
10th Jul 2026265 AMAQI
10th Jul 2026276 AMAQI
10th Jul 2026257 AMAQI
10th Jul 2026278 AMAQI
10th Jul 2026279 AMAQI
10th Jul 20262910 AMAQI
10th Jul 20262611 AMAQI
10th Jul 20262812 PMAQI
10th Jul 2026241 PMAQI
10th Jul 2026242 PMAQI
10th Jul 2026223 PMAQI
10th Jul 2026244 PMAQI
10th Jul 2026275 PMAQI
10th Jul 2026286 PMAQI
10th Jul 2026297 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026279 PMAQI
10th Jul 20263010 PMAQI
10th Jul 20263211 PMAQI
11th Jul 20263212 AMAQI
11th Jul 2026321 AMAQI
11th Jul 2026322 AMAQI
11th Jul 2026303 AMAQI

25°C21/29°C

11th Jul 2026294 AMAQI
11th Jul 2026305 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026307 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263210 AMAQI
11th Jul 20262711 AMAQI
11th Jul 20263012 PMAQI
11th Jul 2026261 PMAQI
11th Jul 2026242 PMAQI
11th Jul 2026223 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026305 PMAQI
11th Jul 2026286 PMAQI
11th Jul 2026287 PMAQI
11th Jul 2026268 PMAQI
11th Jul 2026299 PMAQI
11th Jul 20262910 PMAQI
11th Jul 20263111 PMAQI
12th Jul 20263012 AMAQI
12th Jul 2026301 AMAQI
12th Jul 2026322 AMAQI
12th Jul 2026303 AMAQI

24°C21/27°C

12th Jul 2026264 AMAQI
12th Jul 2026305 AMAQI
12th Jul 2026306 AMAQI
12th Jul 2026307 AMAQI
12th Jul 2026308 AMAQI
12th Jul 2026249 AMAQI
12th Jul 20262910 AMAQI
12th Jul 20262611 AMAQI
12th Jul 20262512 PMAQI
12th Jul 2026231 PMAQI
12th Jul 2026202 PMAQI
12th Jul 2026223 PMAQI
12th Jul 2026244 PMAQI
12th Jul 2026275 PMAQI
12th Jul 2026266 PMAQI
12th Jul 2026307 PMAQI
12th Jul 2026278 PMAQI
12th Jul 2026289 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20262611 PMAQI
13th Jul 20263012 AMAQI
13th Jul 2026281 AMAQI
13th Jul 2026272 AMAQI
13th Jul 2026263 AMAQI

23°C21/28°C

13th Jul 2026264 AMAQI
13th Jul 2026275 AMAQI
13th Jul 2026266 AMAQI
13th Jul 2026267 AMAQI
13th Jul 2026258 AMAQI
13th Jul 2026299 AMAQI
13th Jul 20262510 AMAQI
13th Jul 20262611 AMAQI
13th Jul 20262412 PMAQI
13th Jul 2026211 PMAQI
13th Jul 2026202 PMAQI
13th Jul 2026223 PMAQI
13th Jul 2026254 PMAQI
13th Jul 2026285 PMAQI
13th Jul 2026306 PMAQI
13th Jul 2026307 PMAQI
13th Jul 2026318 PMAQI
13th Jul 2026309 PMAQI
13th Jul 20263010 PMAQI
13th Jul 20263111 PMAQI
14th Jul 20263112 AMAQI
14th Jul 2026321 AMAQI
14th Jul 2026312 AMAQI
14th Jul 2026303 AMAQI

23°C21/25°C

14th Jul 2026274 AMAQI
14th Jul 2026285 AMAQI
14th Jul 2026306 AMAQI
14th Jul 2026287 AMAQI
14th Jul 2026278 AMAQI
14th Jul 2026319 AMAQI
14th Jul 20262910 AMAQI
14th Jul 20262411 AMAQI
14th Jul 20262212 PMAQI
14th Jul 2026201 PMAQI
14th Jul 2026202 PMAQI
14th Jul 2026203 PMAQI
14th Jul 2026234 PMAQI
14th Jul 2026285 PMAQI
14th Jul 2026296 PMAQI
14th Jul 2026267 PMAQI
14th Jul 2026288 PMAQI
14th Jul 2026309 PMAQI
14th Jul 20263010 PMAQI
14th Jul 20263211 PMAQI
15th Jul 20263212 AMAQI
15th Jul 2026311 AMAQI
15th Jul 2026312 AMAQI
15th Jul 2026283 AMAQI

25°C21/29°C

15th Jul 2026264 AMAQI
15th Jul 2026295 AMAQI
15th Jul 2026216 AMAQI
15th Jul 2026287 AMAQI
15th Jul 2026308 AMAQI
15th Jul 2026289 AMAQI
15th Jul 20263010 AMAQI
15th Jul 20262411 AMAQI
15th Jul 20262212 PMAQI
15th Jul 2026191 PMAQI
15th Jul 2026192 PMAQI
15th Jul 2026183 PMAQI
15th Jul 2026204 PMAQI
15th Jul 2026235 PMAQI
15th Jul 2026246 PMAQI
15th Jul 2026227 PMAQI
15th Jul 2026258 PMAQI
15th Jul 2026249 PMAQI
15th Jul 20262410 PMAQI
15th Jul 20262411 PMAQI
16th Jul 20262412 AMAQI
16th Jul 2026241 AMAQI
16th Jul 2026292 AMAQI
16th Jul 2026263 AMAQI

26°C21/32°C

16th Jul 2026274 AMAQI
16th Jul 2026285 AMAQI
16th Jul 2026276 AMAQI
16th Jul 2026267 AMAQI
16th Jul 2026278 AMAQI
16th Jul 2026279 AMAQI
16th Jul 20263010 AMAQI
16th Jul 20262811 AMAQI
16th Jul 20262812 PMAQI
16th Jul 2026261 PMAQI
16th Jul 2026252 PMAQI
16th Jul 2026243 PMAQI
16th Jul 2026244 PMAQI
16th Jul 2026265 PMAQI
16th Jul 2026296 PMAQI
16th Jul 2026287 PMAQI
16th Jul 2026288 PMAQI
16th Jul 2026289 PMAQI
16th Jul 20262610 PMAQI
16th Jul 20262811 PMAQI
17th Jul 20262612 AMAQI
17th Jul 2026271 AMAQI
17th Jul 2026282 AMAQI
17th Jul 2026273 AMAQI

25°C22/27°C

17th Jul 2026264 AMAQI
17th Jul 2026285 AMAQI
17th Jul 2026286 AMAQI
17th Jul 2026277 AMAQI
17th Jul 2026268 AMAQI
17th Jul 2026269 AMAQI
17th Jul 20262610 AMAQI
17th Jul 20262411 AMAQI
17th Jul 20262812 PMAQI
17th Jul 2026231 PMAQI
17th Jul 2026222 PMAQI
17th Jul 2026223 PMAQI
17th Jul 2026464 PMAQI
17th Jul 2026485 PMAQI
17th Jul 2026446 PMAQI
17th Jul 2026467 PMAQI
17th Jul 2026428 PMAQI
17th Jul 2026429 PMAQI
17th Jul 20264210 PMAQI
17th Jul 20264211 PMAQI
18th Jul 20264212 AMAQI
18th Jul 2026401 AMAQI
18th Jul 2026382 AMAQI
18th Jul 2026403 AMAQI

25°C22/28°C

18th Jul 2026404 AMAQI
18th Jul 2026335 AMAQI
18th Jul 2026386 AMAQI
18th Jul 2026387 AMAQI
18th Jul 2026388 AMAQI
18th Jul 2026389 AMAQI
18th Jul 20263610 AMAQI
18th Jul 20263811 AMAQI
18th Jul 20263812 PMAQI
18th Jul 2026381 PMAQI
18th Jul 2026402 PMAQI
18th Jul 2026443 PMAQI
18th Jul 2026504 PMAQI
18th Jul 2026485 PMAQI
18th Jul 2026486 PMAQI
18th Jul 2026507 PMAQI
18th Jul 2026428 PMAQI
18th Jul 2026449 PMAQI
18th Jul 20264410 PMAQI
18th Jul 20264211 PMAQI
19th Jul 20263812 AMAQI
19th Jul 2026381 AMAQI
19th Jul 2026362 AMAQI
19th Jul 2026363 AMAQI

25°C22/29°C

19th Jul 2026314 AMAQI
19th Jul 2026315 AMAQI
19th Jul 2026336 AMAQI
19th Jul 2026337 AMAQI
19th Jul 2026338 AMAQI
19th Jul 2026319 AMAQI
19th Jul 20263110 AMAQI
19th Jul 20262911 AMAQI
19th Jul 20263112 PMAQI
19th Jul 2026311 PMAQI
19th Jul 2026312 PMAQI
19th Jul 2026383 PMAQI
19th Jul 2026334 PMAQI
19th Jul 2026295 PMAQI
19th Jul 2026386 PMAQI
19th Jul 2026387 PMAQI
19th Jul 2026408 PMAQI
19th Jul 2026429 PMAQI
19th Jul 20264210 PMAQI
19th Jul 20264411 PMAQI
20th Jul 20264412 AMAQI
20th Jul 2026461 AMAQI
20th Jul 2026482 AMAQI
20th Jul 2026503 AMAQI

26°C22/30°C

20th Jul 2026464 AMAQI
20th Jul 2026485 AMAQI
20th Jul 2026466 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026488 AMAQI
20th Jul 2026509 AMAQI
20th Jul 20265210 AMAQI
20th Jul 20265311 AMAQI
20th Jul 20265512 PMAQI
20th Jul 2026551 PMAQI
20th Jul 2026692 PMAQI
20th Jul 2026653 PMAQI
20th Jul 2026654 PMAQI
20th Jul 2026645 PMAQI
20th Jul 2026586 PMAQI
20th Jul 2026587 PMAQI
20th Jul 2026598 PMAQI
20th Jul 2026589 PMAQI
20th Jul 20265910 PMAQI
20th Jul 20265811 PMAQI
21st Jul 20265912 AMAQI
21st Jul 2026601 AMAQI
21st Jul 2026602 AMAQI
21st Jul 2026603 AMAQI

26°C23/30°C

21st Jul 2026624 AMAQI
21st Jul 2026605 AMAQI
21st Jul 2026626 AMAQI
21st Jul 2026627 AMAQI
21st Jul 2026608 AMAQI
21st Jul 2026629 AMAQI
21st Jul 20266010 AMAQI
21st Jul 20266211 AMAQI
21st Jul 2026661 PMAQI
21st Jul 2026642 PMAQI
21st Jul 2026653 PMAQI
21st Jul 2026664 PMAQI
21st Jul 2026625 PMAQI
21st Jul 2026656 PMAQI
21st Jul 2026977 PMAQI
21st Jul 2026628 PMAQI
21st Jul 2026609 PMAQI
21st Jul 20265910 PMAQI
21st Jul 20266211 PMAQI
22nd Jul 20265812 AMAQI
22nd Jul 2026571 AMAQI
22nd Jul 2026572 AMAQI
22nd Jul 2026563 AMAQI

26°C23/28°C

22nd Jul 2026584 AMAQI
22nd Jul 2026575 AMAQI
22nd Jul 2026596 AMAQI
22nd Jul 2026627 AMAQI
22nd Jul 2026578 AMAQI
22nd Jul 2026609 AMAQI
22nd Jul 20266210 AMAQI
22nd Jul 20266211 AMAQI
22nd Jul 20266712 PMAQI
22nd Jul 2026671 PMAQI
22nd Jul 2026652 PMAQI
22nd Jul 2026703 PMAQI
22nd Jul 2026794 PMAQI
22nd Jul 2026715 PMAQI
22nd Jul 2026786 PMAQI
22nd Jul 2026727 PMAQI
22nd Jul 2026768 PMAQI
22nd Jul 2026629 PMAQI
22nd Jul 20265710 PMAQI
22nd Jul 20265111 PMAQI
23rd Jul 20265212 AMAQI
23rd Jul 2026601 AMAQI
23rd Jul 2026602 AMAQI
23rd Jul 2026583 AMAQI

27°C23/30°C

23rd Jul 2026694 AMAQI
23rd Jul 2026665 AMAQI
23rd Jul 2026586 AMAQI
23rd Jul 2026647 AMAQI
23rd Jul 2026588 AMAQI
23rd Jul 2026629 AMAQI
23rd Jul 20264910 AMAQI
23rd Jul 20265511 AMAQI
23rd Jul 20265812 PMAQI
23rd Jul 2026561 PMAQI
23rd Jul 2026532 PMAQI
23rd Jul 2026573 PMAQI
23rd Jul 2026594 PMAQI
23rd Jul 2026545 PMAQI
23rd Jul 2026576 PMAQI
23rd Jul 2026627 PMAQI
23rd Jul 2026628 PMAQI
23rd Jul 2026579 PMAQI
23rd Jul 20265410 PMAQI
23rd Jul 20263811 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026421 AMAQI
24th Jul 2026482 AMAQI
24th Jul 2026463 AMAQI

26°C23/29°C

24th Jul 2026504 AMAQI
24th Jul 2026515 AMAQI
24th Jul 2026506 AMAQI
24th Jul 2026407 AMAQI
24th Jul 2026368 AMAQI
24th Jul 2026319 AMAQI
24th Jul 20264210 AMAQI
24th Jul 20263811 AMAQI
24th Jul 20263812 PMAQI
24th Jul 2026381 PMAQI
24th Jul 2026442 PMAQI
24th Jul 2026313 PMAQI
24th Jul 2026424 PMAQI
24th Jul 2026385 PMAQI
24th Jul 2026406 PMAQI
24th Jul 2026367 PMAQI
24th Jul 2026388 PMAQI
24th Jul 2026409 PMAQI
24th Jul 20264010 PMAQI
24th Jul 20264211 PMAQI
25th Jul 20264012 AMAQI
25th Jul 2026421 AMAQI
25th Jul 2026462 AMAQI
25th Jul 2026423 AMAQI

25°C22/28°C

25th Jul 2026464 AMAQI
25th Jul 2026445 AMAQI
25th Jul 2026466 AMAQI
25th Jul 2026487 AMAQI
25th Jul 2026468 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20264610 AMAQI
25th Jul 20264611 AMAQI
25th Jul 20264412 PMAQI
25th Jul 2026401 PMAQI
25th Jul 2026422 PMAQI
25th Jul 2026383 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026365 PMAQI
25th Jul 2026316 PMAQI
25th Jul 2026317 PMAQI
25th Jul 2026278 PMAQI
25th Jul 2026279 PMAQI
25th Jul 20262710 PMAQI
25th Jul 20262311 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026231 AMAQI
26th Jul 2026232 AMAQI
26th Jul 2026233 AMAQI

25°C22/28°C

26th Jul 2026234 AMAQI
26th Jul 2026215 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026257 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262710 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026292 PMAQI
26th Jul 2026293 PMAQI
26th Jul 2026294 PMAQI
26th Jul 2026235 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026219 PMAQI
26th Jul 20262510 PMAQI
26th Jul 20262111 PMAQI
27th Jul 20262712 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026252 AMAQI
27th Jul 2026213 AMAQI

24°C21/25°C

27th Jul 2026254 AMAQI
27th Jul 2026255 AMAQI
27th Jul 2026256 AMAQI
27th Jul 2026277 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026239 AMAQI
27th Jul 20262710 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262112 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026232 PMAQI
27th Jul 2026213 PMAQI
27th Jul 2026214 PMAQI
27th Jul 2026235 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026237 PMAQI
27th Jul 2026238 PMAQI
27th Jul 2026239 PMAQI
27th Jul 20262310 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026252 AMAQI
28th Jul 2026233 AMAQI

24°C20/26°C

28th Jul 2026234 AMAQI
28th Jul 2026255 AMAQI
28th Jul 2026236 AMAQI
28th Jul 2026217 AMAQI
28th Jul 2026218 AMAQI
28th Jul 2026219 AMAQI
28th Jul 20262110 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262312 PMAQI
28th Jul 2026251 PMAQI
28th Jul 2026212 PMAQI
28th Jul 2026253 PMAQI
28th Jul 2026294 PMAQI
28th Jul 2026235 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026237 PMAQI
28th Jul 2026258 PMAQI
28th Jul 2026299 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20263411 PMAQI
29th Jul 20263212 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026332 AMAQI
29th Jul 2026333 AMAQI

23°C21/28°C

29th Jul 2026344 AMAQI
29th Jul 2026275 AMAQI
29th Jul 2026296 AMAQI
29th Jul 2026387 AMAQI
29th Jul 2026348 AMAQI
29th Jul 2026409 AMAQI
29th Jul 20262710 AMAQI
29th Jul 20262311 AMAQI
29th Jul 20262112 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026214 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026259 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262511 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026252 AMAQI
30th Jul 2026253 AMAQI

24°C21/27°C

30th Jul 2026234 AMAQI
30th Jul 2026255 AMAQI
30th Jul 2026256 AMAQI
30th Jul 2026297 AMAQI
30th Jul 2026298 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20263110 AMAQI
30th Jul 20263111 AMAQI
30th Jul 20263612 PMAQI
30th Jul 2026361 PMAQI
30th Jul 2026382 PMAQI
30th Jul 2026363 PMAQI
30th Jul 2026384 PMAQI
30th Jul 2026405 PMAQI
30th Jul 2026406 PMAQI
30th Jul 2026407 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026519 PMAQI
30th Jul 20264410 PMAQI
30th Jul 20264011 PMAQI
31st Jul 20264612 AMAQI
31st Jul 2026521 AMAQI
31st Jul 2026362 AMAQI
31st Jul 2026423 AMAQI

24°C20/29°C

31st Jul 2026424 AMAQI
31st Jul 2026425 AMAQI
31st Jul 2026386 AMAQI
31st Jul 2026427 AMAQI
31st Jul 2026428 AMAQI
31st Jul 2026409 AMAQI
31st Jul 20263610 AMAQI
31st Jul 20264011 AMAQI
31st Jul 20264012 PMAQI
31st Jul 2026381 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026403 PMAQI
31st Jul 2026404 PMAQI
31st Jul 2026365 PMAQI
31st Jul 2026406 PMAQI
31st Jul 2026387 PMAQI
31st Jul 2026368 PMAQI
31st Jul 2026389 PMAQI
31st Jul 20264010 PMAQI
31st Jul 20263811 PMAQI
1st Aug 20264212 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026422 AMAQI
1st Aug 2026423 AMAQI

25°C22/28°C

1st Aug 2026384 AMAQI
1st Aug 2026425 AMAQI
1st Aug 2026366 AMAQI
1st Aug 2026387 AMAQI
1st Aug 2026408 AMAQI
1st Aug 2026409 AMAQI
1st Aug 20264210 AMAQI
1st Aug 20263811 AMAQI
1st Aug 20264212 PMAQI
1st Aug 2026441 PMAQI
1st Aug 2026382 PMAQI
1st Aug 2026403 PMAQI
1st Aug 2026424 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026426 PMAQI
1st Aug 2026407 PMAQI
1st Aug 2026408 PMAQI
1st Aug 2026429 PMAQI
1st Aug 20264010 PMAQI
1st Aug 20264411 PMAQI
2nd Aug 20264212 AMAQI
2nd Aug 2026441 AMAQI
2nd Aug 2026422 AMAQI
2nd Aug 2026443 AMAQI

25°C22/30°C

2nd Aug 2026424 AMAQI
2nd Aug 2026425 AMAQI
2nd Aug 2026426 AMAQI
2nd Aug 2026427 AMAQI
2nd Aug 2026408 AMAQI
2nd Aug 2026409 AMAQI
2nd Aug 20264210 AMAQI
2nd Aug 20264211 AMAQI
2nd Aug 20264212 PMAQI
2nd Aug 2026461 PMAQI
2nd Aug 2026512 PMAQI
2nd Aug 2026503 PMAQI
2nd Aug 2026484 PMAQI
2nd Aug 2026505 PMAQI
2nd Aug 2026466 PMAQI
2nd Aug 2026447 PMAQI
2nd Aug 2026488 PMAQI
2nd Aug 2026469 PMAQI
2nd Aug 20264410 PMAQI
2nd Aug 20264211 PMAQI
3rd Aug 20264012 AMAQI
3rd Aug 2026381 AMAQI
3rd Aug 2026382 AMAQI
3rd Aug 2026403 AMAQI

25°C22/29°C

3rd Aug 2026364 AMAQI
3rd Aug 2026335 AMAQI
3rd Aug 2026366 AMAQI
3rd Aug 2026367 AMAQI
3rd Aug 2026368 AMAQI
3rd Aug 2026369 AMAQI
3rd Aug 20263810 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20263812 PMAQI
3rd Aug 2026401 PMAQI
3rd Aug 2026402 PMAQI
3rd Aug 2026403 PMAQI
3rd Aug 2026424 PMAQI
3rd Aug 2026425 PMAQI
3rd Aug 2026426 PMAQI
3rd Aug 2026407 PMAQI
3rd Aug 2026428 PMAQI
3rd Aug 2026449 PMAQI
3rd Aug 20263610 PMAQI
3rd Aug 20263811 PMAQI
4th Aug 20263812 AMAQI
4th Aug 2026381 AMAQI
4th Aug 2026332 AMAQI
4th Aug 2026383 AMAQI

25°C22/28°C

4th Aug 2026384 AMAQI
4th Aug 2026365 AMAQI
4th Aug 2026316 AMAQI
4th Aug 2026337 AMAQI
4th Aug 2026318 AMAQI
4th Aug 2026319 AMAQI
4th Aug 20262710 AMAQI
4th Aug 20262511 AMAQI
4th Aug 20262312 PMAQI
4th Aug 2026251 PMAQI
4th Aug 2026252 PMAQI
4th Aug 2026293 PMAQI
4th Aug 2026334 PMAQI
4th Aug 2026295 PMAQI
4th Aug 2026316 PMAQI
4th Aug 2026317 PMAQI
4th Aug 2026318 PMAQI
4th Aug 2026319 PMAQI
4th Aug 20263310 PMAQI
4th Aug 20262911 PMAQI
5th Aug 20262912 AMAQI
5th Aug 2026291 AMAQI
5th Aug 2026312 AMAQI
5th Aug 2026313 AMAQI

25°C21/29°C

5th Aug 2026294 AMAQI
5th Aug 2026295 AMAQI
5th Aug 2026296 AMAQI
5th Aug 2026297 AMAQI
5th Aug 2026318 AMAQI
5th Aug 2026279 AMAQI
5th Aug 20262910 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20263112 PMAQI
5th Aug 2026331 PMAQI
5th Aug 2026362 PMAQI
5th Aug 2026403 PMAQI
5th Aug 2026384 PMAQI
5th Aug 2026365 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026367 PMAQI
5th Aug 2026368 PMAQI
5th Aug 2026389 PMAQI
5th Aug 20263810 PMAQI
5th Aug 20263311 PMAQI
6th Aug 20263612 AMAQI
6th Aug 2026401 AMAQI
6th Aug 2026362 AMAQI
6th Aug 2026403 AMAQI

25°C20/30°C

6th Aug 2026384 AMAQI
4 AM
6th Aug 2026405 AMAQI
6th Aug 2026426 AMAQI
6th Aug 2026407 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026389 AMAQI
6th Aug 20263810 AMAQI
6th Aug 20264211 AMAQI
11 AM
6th Aug 20264212 PMAQI
6th Aug 2026441 PMAQI
6th Aug 2026462 PMAQI
6th Aug 2026483 PMAQI
6th Aug 2026504 PMAQI
6th Aug 2026505 PMAQI
6th Aug 2026486 PMAQI
6th Aug 2026487 PMAQI
7 PM
6th Aug 2026468 PMAQI
6th Aug 2026429 PMAQI
6th Aug 20264610 PMAQI
6th Aug 20264811 PMAQI
11 PM
3 AM

26°C22/31°C

Day time
Avg. Highest Time
4 PM - 7 PM

38AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
12 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 PM to 7 PM (Avg. 38), while the lowest AQI was between 12 PM to 12 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 11 PM

36AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM

36AQI

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

2026 Days Vs Air Quality

Honcho, Joetsu, Niigata, Japan

2026

83%

182

17%

37

Total number of days with different AQI categories in last 219 days in 2026 (146 days remaining)

Good
182 Days
Moderate
37 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 83%

Health Risk Level:

Low

In 2026, 83% of 219 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

Honcho, Joetsu, Niigata, 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
19AQI (US)
2nd January 2026
23AQI (US)
3rd January 2026
27AQI (US)
4th January 2026
34AQI (US)
5th January 2026
28AQI (US)
6th January 2026
26AQI (US)
7th January 2026
26AQI (US)
8th January 2026
29AQI (US)
9th January 2026
28AQI (US)
10th January 2026
31AQI (US)
11th January 2026
27AQI (US)
12th January 2026
28AQI (US)
13th January 2026
29AQI (US)
14th January 2026
21AQI (US)
15th January 2026
32AQI (US)
16th January 2026
52AQI (US)
17th January 2026
45AQI (US)
18th January 2026
33AQI (US)
19th January 2026
47AQI (US)
20th January 2026
30AQI (US)
21st January 2026
21AQI (US)
22nd January 2026
23AQI (US)
23rd January 2026
34AQI (US)
24th January 2026
33AQI (US)
25th January 2026
43AQI (US)
26th January 2026
27AQI (US)
27th January 2026
35AQI (US)
28th January 2026
31AQI (US)
29th January 2026
27AQI (US)
30th January 2026
38AQI (US)
31st January 2026
41AQI (US)
1st February 2026
32AQI (US)
2nd February 2026
35AQI (US)
3rd February 2026
31AQI (US)
4th February 2026
35AQI (US)
5th February 2026
41AQI (US)
6th February 2026
42AQI (US)
7th February 2026
23AQI (US)
8th February 2026
13AQI (US)
9th February 2026
35AQI (US)
10th February 2026
41AQI (US)
11th February 2026
48AQI (US)
12th February 2026
40AQI (US)
13th February 2026
45AQI (US)
14th February 2026
61AQI (US)
15th February 2026
55AQI (US)
16th February 2026
50AQI (US)
17th February 2026
19AQI (US)
18th February 2026
31AQI (US)
19th February 2026
31AQI (US)
20th February 2026
33AQI (US)
21st February 2026
44AQI (US)
22nd February 2026
43AQI (US)
23rd February 2026
54AQI (US)
24th February 2026
44AQI (US)
25th February 2026
24AQI (US)
26th February 2026
11AQI (US)
27th February 2026
43AQI (US)
28th February 2026
37AQI (US)
1st March 2026
38AQI (US)
2nd March 2026
71AQI (US)
3rd March 2026
41AQI (US)
4th March 2026
14AQI (US)
5th March 2026
62AQI (US)
6th March 2026
54AQI (US)
7th March 2026
46AQI (US)
8th March 2026
45AQI (US)
9th March 2026
50AQI (US)
10th March 2026
56AQI (US)
11th March 2026
56AQI (US)
12th March 2026
63AQI (US)
13th March 2026
34AQI (US)
14th March 2026
48AQI (US)
15th March 2026
59AQI (US)
16th March 2026
56AQI (US)
17th March 2026
56AQI (US)
18th March 2026
43AQI (US)
19th March 2026
34AQI (US)
20th March 2026
39AQI (US)
21st March 2026
59AQI (US)
22nd March 2026
47AQI (US)
23rd March 2026
51AQI (US)
24th March 2026
72AQI (US)
25th March 2026
51AQI (US)
26th March 2026
22AQI (US)
27th March 2026
22AQI (US)
28th March 2026
54AQI (US)
29th March 2026
59AQI (US)
30th March 2026
63AQI (US)
31st March 2026
42AQI (US)
1st April 2026
44AQI (US)
2nd April 2026
19AQI (US)
3rd April 2026
40AQI (US)
4th April 2026
46AQI (US)
5th April 2026
33AQI (US)
6th April 2026
26AQI (US)
7th April 2026
31AQI (US)
8th April 2026
29AQI (US)
9th April 2026
30AQI (US)
10th April 2026
43AQI (US)
11th April 2026
41AQI (US)
12th April 2026
30AQI (US)
13th April 2026
30AQI (US)
14th April 2026
38AQI (US)
15th April 2026
51AQI (US)
16th April 2026
29AQI (US)
17th April 2026
30AQI (US)
18th April 2026
36AQI (US)
19th April 2026
33AQI (US)
20th April 2026
36AQI (US)
21st April 2026
44AQI (US)
22nd April 2026
27AQI (US)
23rd April 2026
21AQI (US)
24th April 2026
32AQI (US)
25th April 2026
45AQI (US)
26th April 2026
51AQI (US)
27th April 2026
50AQI (US)
28th April 2026
41AQI (US)
29th April 2026
40AQI (US)
30th April 2026
39AQI (US)
1st May 2026
47AQI (US)
2nd May 2026
54AQI (US)
3rd May 2026
45AQI (US)
4th May 2026
25AQI (US)
5th May 2026
29AQI (US)
6th May 2026
29AQI (US)
7th May 2026
31AQI (US)
8th May 2026
26AQI (US)
9th May 2026
26AQI (US)
10th May 2026
28AQI (US)
11th May 2026
31AQI (US)
12th May 2026
36AQI (US)
13th May 2026
39AQI (US)
14th May 2026
33AQI (US)
15th May 2026
34AQI (US)
16th May 2026
82AQI (US)
17th May 2026
67AQI (US)
18th May 2026
53AQI (US)
19th May 2026
48AQI (US)
20th May 2026
61AQI (US)
21st May 2026
61AQI (US)
22nd May 2026
61AQI (US)
23rd May 2026
55AQI (US)
24th May 2026
59AQI (US)
25th May 2026
50AQI (US)
26th May 2026
41AQI (US)
27th May 2026
52AQI (US)
28th May 2026
28AQI (US)
29th May 2026
19AQI (US)
30th May 2026
24AQI (US)
31st May 2026
29AQI (US)
1st June 2026
45AQI (US)
2nd June 2026
46AQI (US)
3rd June 2026
21AQI (US)
4th June 2026
17AQI (US)
5th June 2026
21AQI (US)
6th June 2026
24AQI (US)
7th June 2026
22AQI (US)
8th June 2026
21AQI (US)
9th June 2026
22AQI (US)
10th June 2026
21AQI (US)
11th June 2026
24AQI (US)
12th June 2026
24AQI (US)
13th June 2026
26AQI (US)
14th June 2026
23AQI (US)
15th June 2026
22AQI (US)
16th June 2026
26AQI (US)
17th June 2026
25AQI (US)
18th June 2026
26AQI (US)
19th June 2026
29AQI (US)
20th June 2026
22AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
18AQI (US)
23rd June 2026
20AQI (US)
24th June 2026
20AQI (US)
25th June 2026
26AQI (US)
26th June 2026
29AQI (US)
27th June 2026
26AQI (US)
28th June 2026
27AQI (US)
29th June 2026
25AQI (US)
30th June 2026
23AQI (US)
1st July 2026
23AQI (US)
2nd July 2026
21AQI (US)
3rd July 2026
22AQI (US)
4th July 2026
25AQI (US)
5th July 2026
22AQI (US)
6th July 2026
19AQI (US)
7th July 2026
16AQI (US)
8th July 2026
24AQI (US)
9th July 2026
24AQI (US)
10th July 2026
27AQI (US)
11th July 2026
29AQI (US)
12th July 2026
27AQI (US)
13th July 2026
27AQI (US)
14th July 2026
27AQI (US)
15th July 2026
25AQI (US)
16th July 2026
27AQI (US)
17th July 2026
32AQI (US)
18th July 2026
41AQI (US)
19th July 2026
35AQI (US)
20th July 2026
54AQI (US)
21st July 2026
63AQI (US)
22nd July 2026
63AQI (US)
23rd July 2026
57AQI (US)
24th July 2026
41AQI (US)
25th July 2026
39AQI (US)
26th July 2026
24AQI (US)
27th July 2026
24AQI (US)
28th July 2026
24AQI (US)
29th July 2026
28AQI (US)
30th July 2026
33AQI (US)
31st July 2026
40AQI (US)
1st August 2026
41AQI (US)
2nd August 2026
44AQI (US)
3rd August 2026
39AQI (US)
4th August 2026
31AQI (US)
5th August 2026
33AQI (US)
6th August 2026
43AQI (US)
7th August 2026
51AQI (US)
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

31AQI (US)

37AQI (US)

49AQI (US)

36AQI (US)

42AQI (US)

25AQI (US)

32AQI (US)

40AQI (US)

No. of days

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

202636AQI (US)

30
1
25
3
15
16
28
2
21
10
30
27
4
6
1
182
37

Highest AQI (US) recorded in

March

49AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202541AQI (US)

31
26
2
21
10
28
2
25
6
19
11
22
9
23
8
30
14
17
17
13
25
6
281
84

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

September

30AQI (US)

202439AQI (US)

29
29
25
6
16
14
25
6
12
18
26
5
27
4
30
30
1
28
2
31
308
56

Highest AQI (US) recorded in

April

52AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

202341AQI (US)

31
27
1
17
14
17
13
19
12
23
7
21
10
28
3
28
2
31
24
4
31
297
66

Highest AQI (US) recorded in

April

50AQI (US)

Lowest AQI (US) recorded in

December

32AQI (US)

202239AQI (US)

29
2
20
1
24
7
19
11
17
14
19
11
20
4
1
25
3
30
1
28
2
31
263
56

Highest AQI (US) recorded in

May

50AQI (US)

Lowest AQI (US) recorded in

December

30AQI (US)

202137AQI (US)

28
2
23
5
25
4
16
5
24
5
2
20
10
27
4
23
8
30
30
1
30
23
299
44
2

Highest AQI (US) recorded in

June

48AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

202034AQI (US)

12
1
21
15
3
23
7
28
1
13
16
2
18
1
29
2
26
4
31
216
35
2

Highest AQI (US) recorded in

August

54AQI (US)

Lowest AQI (US) recorded in

December

21AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
41AQI (US)
Least Polluted Year Recorded
2020(Avg.)
34AQI (US)

Honcho's annual 2026 AQI (US) (36) shows an average percentage change of -6.09% (improved AQI (US)) compared to previous years: 2020 (34), 2021 (37), 2022 (39), 2023 (41), 2024 (39), 2025 (41).