Sakaki, Nagano, 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
Sakaki, Nagano, Japan
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2024
60AQILowest AQI recorded on
31st Aug 2024
14AQISame Day Analysis (4th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 21 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 3rd Aug - 4th Aug 2026
Sakaki, Nagano, Japan
AQI
Day
Night
.
4 AM3rd Aug 2026
7 PM
3 AM4th Aug 2026
Day time
Avg. Highest Time
2PM3rd Aug
36AQI
Avg. Lowest Time
12PM3rd Aug
21AQI
Night time
Avg. Highest Time
10PM3rd Aug
25AQI
Avg. Lowest Time
1AM4th Aug
16AQI
In the last 24 hours,
Sakaki's AQI reached its highest point of 36 at 2 PM during the Day, while the lowest point, 16, was recorded at 1 AM during the Night between 3rd Aug and 4th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Sakaki, Nagano, 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
Day
Night
6th Jul 2026214 AMAQI
6th Jul 2026225 AMAQI
6th Jul 2026206 AMAQI
6th Jul 2026147 AMAQI
6th Jul 2026158 AMAQI
6th Jul 2026139 AMAQI
6th Jul 20263010 AMAQI
6th Jul 20263311 AMAQI
6th Jul 20261812 PMAQI
6th Jul 202681 PMAQI
6th Jul 2026192 PMAQI
6th Jul 202683 PMAQI
6th Jul 202684 PMAQI
6th Jul 202685 PMAQI
6th Jul 202686 PMAQI
6th Jul 202687 PMAQI
6th Jul 202688 PMAQI
6th Jul 202689 PMAQI
6th Jul 2026810 PMAQI
6th Jul 20261611 PMAQI
7th Jul 2026812 AMAQI
7th Jul 202681 AMAQI
7th Jul 202682 AMAQI
7th Jul 202683 AMAQI
19°C16/21°C
7th Jul 202684 AMAQI
7th Jul 2026185 AMAQI
7th Jul 2026166 AMAQI
7th Jul 2026247 AMAQI
7th Jul 2026248 AMAQI
7th Jul 2026229 AMAQI
7th Jul 20262210 AMAQI
7th Jul 20262111 AMAQI
7th Jul 20261912 PMAQI
7th Jul 2026201 PMAQI
7th Jul 2026222 PMAQI
7th Jul 2026253 PMAQI
7th Jul 2026244 PMAQI
7th Jul 2026265 PMAQI
7th Jul 2026286 PMAQI
7th Jul 2026267 PMAQI
7th Jul 2026248 PMAQI
7th Jul 2026289 PMAQI
7th Jul 20262910 PMAQI
7th Jul 20262511 PMAQI
8th Jul 20262812 AMAQI
8th Jul 2026291 AMAQI
8th Jul 2026302 AMAQI
8th Jul 2026283 AMAQI
21°C17/28°C
8th Jul 2026284 AMAQI
8th Jul 2026285 AMAQI
8th Jul 2026266 AMAQI
8th Jul 2026297 AMAQI
8th Jul 2026298 AMAQI
8th Jul 2026269 AMAQI
8th Jul 20262410 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262612 PMAQI
8th Jul 2026241 PMAQI
8th Jul 2026222 PMAQI
8th Jul 2026253 PMAQI
8th Jul 2026254 PMAQI
8th Jul 2026225 PMAQI
8th Jul 2026246 PMAQI
8th Jul 2026207 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026239 PMAQI
8th Jul 20262210 PMAQI
8th Jul 20262811 PMAQI
9th Jul 20263012 AMAQI
9th Jul 2026301 AMAQI
9th Jul 2026282 AMAQI
9th Jul 2026303 AMAQI
22°C14/31°C
9th Jul 2026284 AMAQI
9th Jul 2026285 AMAQI
9th Jul 2026296 AMAQI
9th Jul 2026307 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026249 AMAQI
9th Jul 20262410 AMAQI
9th Jul 20262411 AMAQI
9th Jul 20262412 PMAQI
9th Jul 2026221 PMAQI
9th Jul 2026252 PMAQI
9th Jul 2026263 PMAQI
9th Jul 2026244 PMAQI
9th Jul 2026285 PMAQI
9th Jul 2026256 PMAQI
9th Jul 2026307 PMAQI
9th Jul 2026258 PMAQI
9th Jul 2026229 PMAQI
9th Jul 20262810 PMAQI
9th Jul 20262911 PMAQI
10th Jul 20263112 AMAQI
10th Jul 2026281 AMAQI
10th Jul 2026282 AMAQI
10th Jul 2026283 AMAQI
23°C16/33°C
10th Jul 2026264 AMAQI
10th Jul 2026285 AMAQI
10th Jul 2026286 AMAQI
10th Jul 2026297 AMAQI
10th Jul 2026298 AMAQI
10th Jul 2026289 AMAQI
10th Jul 20263010 AMAQI
10th Jul 20262811 AMAQI
10th Jul 20263012 PMAQI
10th Jul 2026281 PMAQI
10th Jul 2026262 PMAQI
10th Jul 2026223 PMAQI
10th Jul 2026264 PMAQI
10th Jul 2026305 PMAQI
10th Jul 2026316 PMAQI
10th Jul 2026327 PMAQI
10th Jul 2026308 PMAQI
10th Jul 2026319 PMAQI
10th Jul 20263210 PMAQI
10th Jul 20263411 PMAQI
11th Jul 20263312 AMAQI
11th Jul 2026361 AMAQI
11th Jul 2026322 AMAQI
11th Jul 2026303 AMAQI
24°C17/34°C
11th Jul 2026304 AMAQI
11th Jul 2026315 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026287 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263010 AMAQI
11th Jul 20263011 AMAQI
11th Jul 20262812 PMAQI
11th Jul 2026261 PMAQI
11th Jul 2026242 PMAQI
11th Jul 2026783 PMAQI
11th Jul 2026764 PMAQI
11th Jul 2026815 PMAQI
11th Jul 2026686 PMAQI
11th Jul 2026767 PMAQI
11th Jul 2026728 PMAQI
11th Jul 2026659 PMAQI
11th Jul 20266210 PMAQI
11th Jul 20264011 PMAQI
12th Jul 20263212 AMAQI
12th Jul 2026421 AMAQI
12th Jul 2026382 AMAQI
12th Jul 2026383 AMAQI
23°C17/29°C
12th Jul 2026334 AMAQI
12th Jul 2026235 AMAQI
12th Jul 2026336 AMAQI
12th Jul 2026407 AMAQI
12th Jul 2026298 AMAQI
12th Jul 2026229 AMAQI
12th Jul 20262510 AMAQI
12th Jul 20263111 AMAQI
12th Jul 20262512 PMAQI
12th Jul 2026331 PMAQI
12th Jul 2026382 PMAQI
12th Jul 2026333 PMAQI
12th Jul 2026384 PMAQI
12th Jul 2026295 PMAQI
12th Jul 2026306 PMAQI
12th Jul 2026307 PMAQI
12th Jul 2026308 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20263010 PMAQI
12th Jul 20262811 PMAQI
13th Jul 20263312 AMAQI
13th Jul 2026261 AMAQI
13th Jul 2026282 AMAQI
13th Jul 2026313 AMAQI
21°C17/29°C
13th Jul 2026244 AMAQI
13th Jul 2026285 AMAQI
13th Jul 2026296 AMAQI
13th Jul 2026297 AMAQI
13th Jul 2026288 AMAQI
13th Jul 2026289 AMAQI
13th Jul 20262710 AMAQI
13th Jul 20262711 AMAQI
13th Jul 20262812 PMAQI
13th Jul 2026221 PMAQI
13th Jul 2026222 PMAQI
13th Jul 2026223 PMAQI
13th Jul 2026264 PMAQI
13th Jul 2026295 PMAQI
13th Jul 2026306 PMAQI
13th Jul 2026307 PMAQI
13th Jul 2026288 PMAQI
13th Jul 2026319 PMAQI
13th Jul 20263210 PMAQI
13th Jul 20262911 PMAQI
14th Jul 20263212 AMAQI
14th Jul 2026321 AMAQI
14th Jul 2026312 AMAQI
14th Jul 2026303 AMAQI
20°C16/25°C
14th Jul 2026274 AMAQI
14th Jul 2026305 AMAQI
14th Jul 2026296 AMAQI
14th Jul 2026287 AMAQI
14th Jul 2026288 AMAQI
14th Jul 2026319 AMAQI
14th Jul 20263210 AMAQI
14th Jul 20262411 AMAQI
14th Jul 20262712 PMAQI
14th Jul 2026211 PMAQI
14th Jul 2026202 PMAQI
14th Jul 2026183 PMAQI
14th Jul 2026224 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026326 PMAQI
14th Jul 2026307 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026309 PMAQI
14th Jul 20263110 PMAQI
14th Jul 20263411 PMAQI
15th Jul 20263312 AMAQI
15th Jul 2026311 AMAQI
15th Jul 2026312 AMAQI
15th Jul 2026283 AMAQI
24°C16/33°C
15th Jul 2026304 AMAQI
15th Jul 2026285 AMAQI
15th Jul 2026256 AMAQI
15th Jul 2026287 AMAQI
15th Jul 2026328 AMAQI
15th Jul 2026269 AMAQI
15th Jul 20263110 AMAQI
15th Jul 20262411 AMAQI
15th Jul 20262212 PMAQI
15th Jul 2026201 PMAQI
15th Jul 2026202 PMAQI
15th Jul 2026363 PMAQI
15th Jul 2026404 PMAQI
15th Jul 2026335 PMAQI
15th Jul 2026256 PMAQI
15th Jul 2026257 PMAQI
15th Jul 2026228 PMAQI
15th Jul 2026249 PMAQI
15th Jul 20262410 PMAQI
15th Jul 20263111 PMAQI
16th Jul 20263112 AMAQI
16th Jul 2026321 AMAQI
16th Jul 2026362 AMAQI
16th Jul 2026363 AMAQI
25°C17/36°C
16th Jul 2026364 AMAQI
16th Jul 2026385 AMAQI
16th Jul 2026406 AMAQI
16th Jul 2026357 AMAQI
16th Jul 2026368 AMAQI
16th Jul 2026389 AMAQI
16th Jul 20263310 AMAQI
16th Jul 20264211 AMAQI
16th Jul 20265012 PMAQI
16th Jul 2026551 PMAQI
16th Jul 2026342 PMAQI
16th Jul 2026563 PMAQI
16th Jul 2026534 PMAQI
16th Jul 2026605 PMAQI
16th Jul 2026566 PMAQI
16th Jul 2026507 PMAQI
16th Jul 2026468 PMAQI
16th Jul 2026509 PMAQI
16th Jul 20265210 PMAQI
16th Jul 20265411 PMAQI
17th Jul 20263112 AMAQI
17th Jul 2026311 AMAQI
17th Jul 2026282 AMAQI
17th Jul 2026293 AMAQI
25°C18/31°C
17th Jul 2026284 AMAQI
17th Jul 2026265 AMAQI
17th Jul 2026276 AMAQI
17th Jul 2026277 AMAQI
17th Jul 2026298 AMAQI
17th Jul 2026299 AMAQI
17th Jul 20262910 AMAQI
17th Jul 20263311 AMAQI
17th Jul 20263112 PMAQI
17th Jul 2026301 PMAQI
17th Jul 2026262 PMAQI
17th Jul 2026233 PMAQI
17th Jul 2026524 PMAQI
17th Jul 2026505 PMAQI
17th Jul 2026466 PMAQI
17th Jul 2026517 PMAQI
17th Jul 2026528 PMAQI
17th Jul 2026519 PMAQI
17th Jul 20264610 PMAQI
17th Jul 20263611 PMAQI
18th Jul 20263312 AMAQI
18th Jul 2026331 AMAQI
18th Jul 2026312 AMAQI
18th Jul 2026333 AMAQI
24°C19/31°C
18th Jul 2026294 AMAQI
18th Jul 2026295 AMAQI
18th Jul 2026216 AMAQI
18th Jul 2026227 AMAQI
18th Jul 2026218 AMAQI
18th Jul 2026219 AMAQI
18th Jul 20262110 AMAQI
18th Jul 20262511 AMAQI
18th Jul 20263312 PMAQI
18th Jul 2026221 PMAQI
18th Jul 2026252 PMAQI
18th Jul 2026363 PMAQI
18th Jul 2026424 PMAQI
18th Jul 2026445 PMAQI
18th Jul 2026446 PMAQI
18th Jul 2026387 PMAQI
18th Jul 2026318 PMAQI
18th Jul 2026279 PMAQI
18th Jul 20262510 PMAQI
18th Jul 20263211 PMAQI
19th Jul 20263412 AMAQI
19th Jul 2026301 AMAQI
19th Jul 2026232 AMAQI
19th Jul 2026213 AMAQI
23°C19/28°C
19th Jul 2026254 AMAQI
19th Jul 2026275 AMAQI
19th Jul 2026256 AMAQI
19th Jul 2026317 AMAQI
19th Jul 2026318 AMAQI
19th Jul 2026339 AMAQI
19th Jul 20263410 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20262912 PMAQI
19th Jul 2026311 PMAQI
19th Jul 2026462 PMAQI
19th Jul 2026503 PMAQI
19th Jul 2026384 PMAQI
19th Jul 2026405 PMAQI
19th Jul 2026406 PMAQI
19th Jul 2026337 PMAQI
19th Jul 2026318 PMAQI
19th Jul 2026369 PMAQI
19th Jul 20263310 PMAQI
19th Jul 20263311 PMAQI
20th Jul 20262712 AMAQI
20th Jul 2026271 AMAQI
20th Jul 2026312 AMAQI
20th Jul 2026363 AMAQI
24°C18/33°C
20th Jul 2026294 AMAQI
20th Jul 2026295 AMAQI
20th Jul 2026296 AMAQI
20th Jul 2026337 AMAQI
20th Jul 2026298 AMAQI
20th Jul 2026319 AMAQI
20th Jul 20263610 AMAQI
20th Jul 20263811 AMAQI
20th Jul 20264012 PMAQI
20th Jul 2026461 PMAQI
20th Jul 2026422 PMAQI
20th Jul 2026423 PMAQI
20th Jul 2026444 PMAQI
20th Jul 2026445 PMAQI
20th Jul 2026526 PMAQI
20th Jul 2026507 PMAQI
20th Jul 2026468 PMAQI
20th Jul 2026589 PMAQI
20th Jul 20265710 PMAQI
20th Jul 20265411 PMAQI
21st Jul 20265312 AMAQI
21st Jul 2026521 AMAQI
21st Jul 2026522 AMAQI
21st Jul 2026523 AMAQI
25°C19/33°C
21st Jul 2026534 AMAQI
21st Jul 2026525 AMAQI
21st Jul 2026536 AMAQI
21st Jul 2026577 AMAQI
21st Jul 2026558 AMAQI
21st Jul 2026609 AMAQI
21st Jul 20265810 AMAQI
21st Jul 20265711 AMAQI
21st Jul 2026621 PMAQI
21st Jul 2026602 PMAQI
21st Jul 2026603 PMAQI
21st Jul 2026634 PMAQI
21st Jul 2026635 PMAQI
21st Jul 2026606 PMAQI
21st Jul 2026977 PMAQI
21st Jul 2026628 PMAQI
21st Jul 2026629 PMAQI
21st Jul 20266210 PMAQI
21st Jul 20265911 PMAQI
22nd Jul 20265712 AMAQI
22nd Jul 2026581 AMAQI
22nd Jul 2026582 AMAQI
22nd Jul 2026573 AMAQI
25°C18/33°C
22nd Jul 2026564 AMAQI
22nd Jul 2026535 AMAQI
22nd Jul 2026536 AMAQI
22nd Jul 2026527 AMAQI
22nd Jul 2026548 AMAQI
22nd Jul 2026549 AMAQI
22nd Jul 20265410 AMAQI
22nd Jul 20266411 AMAQI
22nd Jul 20266712 PMAQI
22nd Jul 2026691 PMAQI
22nd Jul 2026672 PMAQI
22nd Jul 2026693 PMAQI
22nd Jul 2026764 PMAQI
22nd Jul 2026795 PMAQI
22nd Jul 2026766 PMAQI
22nd Jul 2026747 PMAQI
22nd Jul 2026798 PMAQI
22nd Jul 2026769 PMAQI
22nd Jul 20267810 PMAQI
22nd Jul 20267311 PMAQI
23rd Jul 20266812 AMAQI
23rd Jul 2026751 AMAQI
23rd Jul 2026722 AMAQI
23rd Jul 2026683 AMAQI
25°C18/35°C
23rd Jul 2026644 AMAQI
23rd Jul 2026605 AMAQI
23rd Jul 2026606 AMAQI
23rd Jul 2026627 AMAQI
23rd Jul 2026578 AMAQI
23rd Jul 2026609 AMAQI
23rd Jul 20266210 AMAQI
23rd Jul 20266811 AMAQI
23rd Jul 20266612 PMAQI
23rd Jul 2026621 PMAQI
23rd Jul 2026532 PMAQI
23rd Jul 2026553 PMAQI
23rd Jul 2026424 PMAQI
23rd Jul 2026335 PMAQI
23rd Jul 2026316 PMAQI
23rd Jul 2026317 PMAQI
23rd Jul 2026318 PMAQI
23rd Jul 2026259 PMAQI
23rd Jul 20262910 PMAQI
23rd Jul 20264011 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026332 AMAQI
24th Jul 2026383 AMAQI
25°C18/33°C
24th Jul 2026334 AMAQI
24th Jul 2026345 AMAQI
24th Jul 2026366 AMAQI
24th Jul 2026367 AMAQI
24th Jul 2026318 AMAQI
24th Jul 2026389 AMAQI
24th Jul 20265210 AMAQI
24th Jul 20265611 AMAQI
24th Jul 20265812 PMAQI
24th Jul 2026531 PMAQI
24th Jul 2026502 PMAQI
24th Jul 2026443 PMAQI
24th Jul 2026314 PMAQI
24th Jul 2026425 PMAQI
24th Jul 2026316 PMAQI
24th Jul 2026237 PMAQI
24th Jul 2026278 PMAQI
24th Jul 2026219 PMAQI
24th Jul 20262110 PMAQI
24th Jul 20262911 PMAQI
25th Jul 20262512 AMAQI
25th Jul 2026281 AMAQI
25th Jul 2026362 AMAQI
25th Jul 2026293 AMAQI
24°C17/33°C
25th Jul 2026254 AMAQI
25th Jul 2026425 AMAQI
25th Jul 2026426 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026369 AMAQI
25th Jul 20263610 AMAQI
25th Jul 20264411 AMAQI
25th Jul 20264612 PMAQI
25th Jul 2026461 PMAQI
25th Jul 2026502 PMAQI
25th Jul 2026553 PMAQI
25th Jul 2026514 PMAQI
25th Jul 2026465 PMAQI
25th Jul 2026526 PMAQI
25th Jul 2026447 PMAQI
25th Jul 2026388 PMAQI
25th Jul 2026369 PMAQI
25th Jul 20263310 PMAQI
25th Jul 20264211 PMAQI
26th Jul 20264012 AMAQI
26th Jul 2026381 AMAQI
26th Jul 2026362 AMAQI
26th Jul 2026363 AMAQI
24°C18/32°C
26th Jul 2026334 AMAQI
26th Jul 2026275 AMAQI
26th Jul 2026236 AMAQI
26th Jul 2026277 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026259 AMAQI
26th Jul 20262710 AMAQI
26th Jul 20263611 AMAQI
26th Jul 20263612 PMAQI
26th Jul 2026421 PMAQI
26th Jul 2026482 PMAQI
26th Jul 2026503 PMAQI
26th Jul 2026364 PMAQI
26th Jul 2026385 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026387 PMAQI
26th Jul 2026338 PMAQI
26th Jul 2026319 PMAQI
26th Jul 20262910 PMAQI
26th Jul 20263111 PMAQI
27th Jul 20262312 AMAQI
27th Jul 2026211 AMAQI
27th Jul 2026302 AMAQI
27th Jul 2026333 AMAQI
22°C16/28°C
27th Jul 2026404 AMAQI
27th Jul 2026405 AMAQI
27th Jul 2026406 AMAQI
27th Jul 2026387 AMAQI
27th Jul 2026448 AMAQI
27th Jul 2026429 AMAQI
27th Jul 20264010 AMAQI
27th Jul 20264411 AMAQI
27th Jul 20262312 PMAQI
27th Jul 2026211 PMAQI
27th Jul 2026212 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026274 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026216 PMAQI
27th Jul 2026217 PMAQI
27th Jul 2026218 PMAQI
27th Jul 2026239 PMAQI
27th Jul 20262110 PMAQI
27th Jul 20262111 PMAQI
28th Jul 20263112 AMAQI
28th Jul 2026331 AMAQI
28th Jul 2026312 AMAQI
28th Jul 2026313 AMAQI
22°C15/30°C
28th Jul 2026364 AMAQI
28th Jul 2026215 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026297 AMAQI
28th Jul 2026258 AMAQI
28th Jul 2026299 AMAQI
28th Jul 20262710 AMAQI
28th Jul 20262911 AMAQI
28th Jul 20263312 PMAQI
28th Jul 2026291 PMAQI
28th Jul 2026362 PMAQI
28th Jul 2026403 PMAQI
28th Jul 2026364 PMAQI
28th Jul 2026295 PMAQI
28th Jul 2026296 PMAQI
28th Jul 2026257 PMAQI
28th Jul 2026428 PMAQI
28th Jul 2026519 PMAQI
28th Jul 20264410 PMAQI
28th Jul 20264211 PMAQI
29th Jul 20264612 AMAQI
29th Jul 2026211 AMAQI
29th Jul 2026332 AMAQI
29th Jul 2026333 AMAQI
21°C15/28°C
29th Jul 2026314 AMAQI
29th Jul 2026275 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026277 AMAQI
29th Jul 2026278 AMAQI
29th Jul 2026349 AMAQI
29th Jul 20262710 AMAQI
29th Jul 20263811 AMAQI
29th Jul 20262512 PMAQI
29th Jul 2026231 PMAQI
29th Jul 2026302 PMAQI
29th Jul 2026363 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026298 PMAQI
29th Jul 2026279 PMAQI
29th Jul 20262710 PMAQI
29th Jul 20262911 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026213 AMAQI
21°C15/30°C
30th Jul 2026214 AMAQI
30th Jul 2026255 AMAQI
30th Jul 2026236 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026271 PMAQI
30th Jul 2026292 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026345 PMAQI
30th Jul 2026296 PMAQI
30th Jul 2026297 PMAQI
30th Jul 2026318 PMAQI
30th Jul 2026389 PMAQI
30th Jul 20263610 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20262912 AMAQI
31st Jul 2026291 AMAQI
31st Jul 2026312 AMAQI
31st Jul 2026313 AMAQI
23°C16/31°C
31st Jul 2026294 AMAQI
31st Jul 2026235 AMAQI
31st Jul 2026256 AMAQI
31st Jul 2026257 AMAQI
31st Jul 2026258 AMAQI
31st Jul 2026279 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20264011 AMAQI
31st Jul 20265012 PMAQI
31st Jul 2026571 PMAQI
31st Jul 2026502 PMAQI
31st Jul 2026573 PMAQI
31st Jul 2026554 PMAQI
31st Jul 2026575 PMAQI
31st Jul 2026546 PMAQI
31st Jul 2026567 PMAQI
31st Jul 2026388 PMAQI
31st Jul 2026339 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20263311 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026291 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026383 AMAQI
23°C17/31°C
1st Aug 2026364 AMAQI
1st Aug 2026315 AMAQI
1st Aug 2026336 AMAQI
1st Aug 2026407 AMAQI
1st Aug 2026368 AMAQI
1st Aug 2026369 AMAQI
1st Aug 20263810 AMAQI
1st Aug 20264011 AMAQI
1st Aug 20264012 PMAQI
1st Aug 2026441 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026383 PMAQI
1st Aug 2026404 PMAQI
1st Aug 2026385 PMAQI
1st Aug 2026386 PMAQI
1st Aug 2026387 PMAQI
1st Aug 2026408 PMAQI
1st Aug 2026389 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20263311 PMAQI
2nd Aug 20263312 AMAQI
2nd Aug 2026291 AMAQI
2nd Aug 2026292 AMAQI
2nd Aug 2026333 AMAQI
24°C17/33°C
2nd Aug 2026334 AMAQI
2nd Aug 2026295 AMAQI
2nd Aug 2026256 AMAQI
2nd Aug 2026297 AMAQI
2nd Aug 2026278 AMAQI
2nd Aug 2026299 AMAQI
2nd Aug 20262910 AMAQI
2nd Aug 20262911 AMAQI
2nd Aug 20263312 PMAQI
2nd Aug 2026381 PMAQI
2nd Aug 2026382 PMAQI
2nd Aug 2026403 PMAQI
2nd Aug 2026334 PMAQI
2nd Aug 2026365 PMAQI
2nd Aug 2026386 PMAQI
2nd Aug 2026387 PMAQI
2nd Aug 2026368 PMAQI
2nd Aug 2026369 PMAQI
2nd Aug 20263810 PMAQI
2nd Aug 20263311 PMAQI
3rd Aug 20263312 AMAQI
3rd Aug 2026331 AMAQI
3rd Aug 2026312 AMAQI
3rd Aug 2026333 AMAQI
24°C17/33°C
3rd Aug 2026294 AMAQI
3rd Aug 2026295 AMAQI
3rd Aug 2026256 AMAQI
3rd Aug 2026257 AMAQI
3rd Aug 2026218 AMAQI
3rd Aug 2026239 AMAQI
3rd Aug 20262110 AMAQI
3rd Aug 20262511 AMAQI
3rd Aug 20262112 PMAQI
3rd Aug 2026271 PMAQI
3rd Aug 2026362 PMAQI
3rd Aug 2026273 PMAQI
3rd Aug 2026294 PMAQI
3rd Aug 2026295 PMAQI
3rd Aug 2026276 PMAQI
3rd Aug 2026237 PMAQI
3rd Aug 2026238 PMAQI
3rd Aug 2026219 PMAQI
3rd Aug 20262510 PMAQI
3rd Aug 20262111 PMAQI
4th Aug 20261912 AMAQI
4th Aug 2026161 AMAQI
4th Aug 2026232 AMAQI
4th Aug 2026173 AMAQI
24°C19/29°C
4th Aug 2026144 AMAQI
4 AM4th Aug 2026175 AMAQI
4th Aug 2026146 AMAQI
4th Aug 2026237 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026219 AMAQI
4th Aug 20262110 AMAQI
4th Aug 20262511 AMAQI
11 AM4th Aug 20262112 PMAQI
4th Aug 2026231 PMAQI
4th Aug 2026272 PMAQI
4th Aug 2026213 PMAQI
4th Aug 2026214 PMAQI
4th Aug 2026235 PMAQI
4th Aug 2026236 PMAQI
4th Aug 2026217 PMAQI
7 PM4th Aug 2026218 PMAQI
4th Aug 2026239 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20262311 PMAQI
11 PM3 AM
23°C15/31°C
Day time
Avg. Highest Time
3 PM - 7 PM
38AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
4 AM - 6 AM
31AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 PM to 7 PM (Avg. 38), while the lowest AQI was between 4 AM to 6 AM (Avg. 31).
Night time
Avg. Highest Time
8 PM - 11 PM
35AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
1 AM - 2 AM
32AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 35), while the lowest AQI was between 1 AM to 2 AM (Avg. 32).
2026 Days Vs Air Quality
Sakaki, Nagano, Japan
2026
82%
178
18%
38
Total number of days with different AQI categories in last 216 days in 2026 (149 days remaining)
Good
178 DaysModerate
38 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2026, 82% of 216 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
Sakaki, Nagano, 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
16AQI (US)
16AQI (US)
2nd January 2026
12AQI (US)
12AQI (US)
3rd January 2026
16AQI (US)
16AQI (US)
4th January 2026
21AQI (US)
21AQI (US)
5th January 2026
32AQI (US)
32AQI (US)
6th January 2026
22AQI (US)
22AQI (US)
7th January 2026
22AQI (US)
22AQI (US)
8th January 2026
29AQI (US)
29AQI (US)
9th January 2026
23AQI (US)
23AQI (US)
10th January 2026
22AQI (US)
22AQI (US)
11th January 2026
18AQI (US)
18AQI (US)
12th January 2026
16AQI (US)
16AQI (US)
13th January 2026
32AQI (US)
32AQI (US)
14th January 2026
12AQI (US)
12AQI (US)
15th January 2026
28AQI (US)
28AQI (US)
16th January 2026
46AQI (US)
46AQI (US)
17th January 2026
42AQI (US)
42AQI (US)
18th January 2026
22AQI (US)
22AQI (US)
19th January 2026
44AQI (US)
44AQI (US)
20th January 2026
27AQI (US)
27AQI (US)
21st January 2026
13AQI (US)
13AQI (US)
22nd January 2026
19AQI (US)
19AQI (US)
23rd January 2026
41AQI (US)
41AQI (US)
24th January 2026
54AQI (US)
54AQI (US)
25th January 2026
42AQI (US)
42AQI (US)
26th January 2026
28AQI (US)
28AQI (US)
27th January 2026
48AQI (US)
48AQI (US)
28th January 2026
26AQI (US)
26AQI (US)
29th January 2026
28AQI (US)
28AQI (US)
30th January 2026
39AQI (US)
39AQI (US)
31st January 2026
26AQI (US)
26AQI (US)
1st February 2026
42AQI (US)
42AQI (US)
2nd February 2026
46AQI (US)
46AQI (US)
3rd February 2026
30AQI (US)
30AQI (US)
4th February 2026
33AQI (US)
33AQI (US)
5th February 2026
48AQI (US)
48AQI (US)
6th February 2026
48AQI (US)
48AQI (US)
7th February 2026
14AQI (US)
14AQI (US)
8th February 2026
13AQI (US)
13AQI (US)
9th February 2026
38AQI (US)
38AQI (US)
10th February 2026
48AQI (US)
48AQI (US)
11th February 2026
46AQI (US)
46AQI (US)
12th February 2026
43AQI (US)
43AQI (US)
13th February 2026
63AQI (US)
63AQI (US)
14th February 2026
68AQI (US)
68AQI (US)
15th February 2026
57AQI (US)
57AQI (US)
16th February 2026
52AQI (US)
52AQI (US)
17th February 2026
22AQI (US)
22AQI (US)
18th February 2026
23AQI (US)
23AQI (US)
19th February 2026
31AQI (US)
31AQI (US)
20th February 2026
30AQI (US)
30AQI (US)
21st February 2026
52AQI (US)
52AQI (US)
22nd February 2026
40AQI (US)
40AQI (US)
23rd February 2026
46AQI (US)
46AQI (US)
24th February 2026
48AQI (US)
48AQI (US)
25th February 2026
23AQI (US)
23AQI (US)
26th February 2026
12AQI (US)
12AQI (US)
27th February 2026
26AQI (US)
26AQI (US)
28th February 2026
15AQI (US)
15AQI (US)
1st March 2026
31AQI (US)
31AQI (US)
2nd March 2026
91AQI (US)
91AQI (US)
3rd March 2026
52AQI (US)
52AQI (US)
4th March 2026
48AQI (US)
48AQI (US)
5th March 2026
64AQI (US)
64AQI (US)
6th March 2026
55AQI (US)
55AQI (US)
7th March 2026
48AQI (US)
48AQI (US)
8th March 2026
46AQI (US)
46AQI (US)
9th March 2026
54AQI (US)
54AQI (US)
10th March 2026
57AQI (US)
57AQI (US)
11th March 2026
60AQI (US)
60AQI (US)
12th March 2026
73AQI (US)
73AQI (US)
13th March 2026
45AQI (US)
45AQI (US)
14th March 2026
50AQI (US)
50AQI (US)
15th March 2026
62AQI (US)
62AQI (US)
16th March 2026
65AQI (US)
65AQI (US)
17th March 2026
60AQI (US)
60AQI (US)
18th March 2026
61AQI (US)
61AQI (US)
19th March 2026
30AQI (US)
30AQI (US)
20th March 2026
55AQI (US)
55AQI (US)
21st March 2026
49AQI (US)
49AQI (US)
22nd March 2026
53AQI (US)
53AQI (US)
23rd March 2026
58AQI (US)
58AQI (US)
24th March 2026
71AQI (US)
71AQI (US)
25th March 2026
61AQI (US)
61AQI (US)
26th March 2026
22AQI (US)
22AQI (US)
27th March 2026
22AQI (US)
22AQI (US)
28th March 2026
55AQI (US)
55AQI (US)
29th March 2026
66AQI (US)
66AQI (US)
30th March 2026
52AQI (US)
52AQI (US)
31st March 2026
24AQI (US)
24AQI (US)
1st April 2026
12AQI (US)
12AQI (US)
2nd April 2026
32AQI (US)
32AQI (US)
3rd April 2026
51AQI (US)
51AQI (US)
4th April 2026
41AQI (US)
41AQI (US)
5th April 2026
19AQI (US)
19AQI (US)
6th April 2026
33AQI (US)
33AQI (US)
7th April 2026
35AQI (US)
35AQI (US)
8th April 2026
32AQI (US)
32AQI (US)
9th April 2026
30AQI (US)
30AQI (US)
10th April 2026
45AQI (US)
45AQI (US)
11th April 2026
35AQI (US)
35AQI (US)
12th April 2026
35AQI (US)
35AQI (US)
13th April 2026
36AQI (US)
36AQI (US)
14th April 2026
45AQI (US)
45AQI (US)
15th April 2026
48AQI (US)
48AQI (US)
16th April 2026
28AQI (US)
28AQI (US)
17th April 2026
29AQI (US)
29AQI (US)
18th April 2026
38AQI (US)
38AQI (US)
19th April 2026
39AQI (US)
39AQI (US)
20th April 2026
38AQI (US)
38AQI (US)
21st April 2026
42AQI (US)
42AQI (US)
22nd April 2026
26AQI (US)
26AQI (US)
23rd April 2026
22AQI (US)
22AQI (US)
24th April 2026
26AQI (US)
26AQI (US)
25th April 2026
38AQI (US)
38AQI (US)
26th April 2026
50AQI (US)
50AQI (US)
27th April 2026
49AQI (US)
49AQI (US)
28th April 2026
42AQI (US)
42AQI (US)
29th April 2026
38AQI (US)
38AQI (US)
30th April 2026
34AQI (US)
34AQI (US)
1st May 2026
35AQI (US)
35AQI (US)
2nd May 2026
50AQI (US)
50AQI (US)
3rd May 2026
46AQI (US)
46AQI (US)
4th May 2026
21AQI (US)
21AQI (US)
5th May 2026
28AQI (US)
28AQI (US)
6th May 2026
35AQI (US)
35AQI (US)
7th May 2026
36AQI (US)
36AQI (US)
8th May 2026
27AQI (US)
27AQI (US)
9th May 2026
28AQI (US)
28AQI (US)
10th May 2026
36AQI (US)
36AQI (US)
11th May 2026
37AQI (US)
37AQI (US)
12th May 2026
44AQI (US)
44AQI (US)
13th May 2026
45AQI (US)
45AQI (US)
14th May 2026
39AQI (US)
39AQI (US)
15th May 2026
38AQI (US)
38AQI (US)
16th May 2026
85AQI (US)
85AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
54AQI (US)
54AQI (US)
19th May 2026
48AQI (US)
48AQI (US)
20th May 2026
62AQI (US)
62AQI (US)
21st May 2026
61AQI (US)
61AQI (US)
22nd May 2026
63AQI (US)
63AQI (US)
23rd May 2026
55AQI (US)
55AQI (US)
24th May 2026
60AQI (US)
60AQI (US)
25th May 2026
50AQI (US)
50AQI (US)
26th May 2026
41AQI (US)
41AQI (US)
27th May 2026
28AQI (US)
28AQI (US)
28th May 2026
27AQI (US)
27AQI (US)
29th May 2026
17AQI (US)
17AQI (US)
30th May 2026
24AQI (US)
24AQI (US)
31st May 2026
26AQI (US)
26AQI (US)
1st June 2026
28AQI (US)
28AQI (US)
2nd June 2026
35AQI (US)
35AQI (US)
3rd June 2026
13AQI (US)
13AQI (US)
4th June 2026
19AQI (US)
19AQI (US)
5th June 2026
22AQI (US)
22AQI (US)
6th June 2026
24AQI (US)
24AQI (US)
7th June 2026
21AQI (US)
21AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
22AQI (US)
22AQI (US)
10th June 2026
22AQI (US)
22AQI (US)
11th June 2026
24AQI (US)
24AQI (US)
12th June 2026
25AQI (US)
25AQI (US)
13th June 2026
26AQI (US)
26AQI (US)
14th June 2026
24AQI (US)
24AQI (US)
15th June 2026
22AQI (US)
22AQI (US)
16th June 2026
27AQI (US)
27AQI (US)
17th June 2026
24AQI (US)
24AQI (US)
18th June 2026
26AQI (US)
26AQI (US)
19th June 2026
32AQI (US)
32AQI (US)
20th June 2026
23AQI (US)
23AQI (US)
21st June 2026
17AQI (US)
17AQI (US)
22nd June 2026
17AQI (US)
17AQI (US)
23rd June 2026
21AQI (US)
21AQI (US)
24th June 2026
20AQI (US)
20AQI (US)
25th June 2026
26AQI (US)
26AQI (US)
26th June 2026
28AQI (US)
28AQI (US)
27th June 2026
27AQI (US)
27AQI (US)
28th June 2026
28AQI (US)
28AQI (US)
29th June 2026
27AQI (US)
27AQI (US)
30th June 2026
24AQI (US)
24AQI (US)
1st July 2026
25AQI (US)
25AQI (US)
2nd July 2026
20AQI (US)
20AQI (US)
3rd July 2026
17AQI (US)
17AQI (US)
4th July 2026
25AQI (US)
25AQI (US)
5th July 2026
22AQI (US)
22AQI (US)
6th July 2026
16AQI (US)
16AQI (US)
7th July 2026
20AQI (US)
20AQI (US)
8th July 2026
25AQI (US)
25AQI (US)
9th July 2026
27AQI (US)
27AQI (US)
10th July 2026
29AQI (US)
29AQI (US)
11th July 2026
45AQI (US)
45AQI (US)
12th July 2026
32AQI (US)
32AQI (US)
13th July 2026
28AQI (US)
28AQI (US)
14th July 2026
28AQI (US)
28AQI (US)
15th July 2026
28AQI (US)
28AQI (US)
16th July 2026
44AQI (US)
44AQI (US)
17th July 2026
35AQI (US)
35AQI (US)
18th July 2026
30AQI (US)
30AQI (US)
19th July 2026
32AQI (US)
32AQI (US)
20th July 2026
40AQI (US)
40AQI (US)
21st July 2026
59AQI (US)
59AQI (US)
22nd July 2026
65AQI (US)
65AQI (US)
23rd July 2026
53AQI (US)
53AQI (US)
24th July 2026
37AQI (US)
37AQI (US)
25th July 2026
40AQI (US)
40AQI (US)
26th July 2026
34AQI (US)
34AQI (US)
27th July 2026
29AQI (US)
29AQI (US)
28th July 2026
33AQI (US)
33AQI (US)
29th July 2026
29AQI (US)
29AQI (US)
30th July 2026
26AQI (US)
26AQI (US)
31st July 2026
38AQI (US)
38AQI (US)
1st August 2026
36AQI (US)
36AQI (US)
2nd August 2026
33AQI (US)
33AQI (US)
3rd August 2026
27AQI (US)
27AQI (US)
4th August 2026
21AQI (US)
21AQI (US)
5th August 2026
6th August 2026
7th August 2026
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
28AQI (US)
38AQI (US)
53AQI (US)
36AQI (US)
42AQI (US)
24AQI (US)
33AQI (US)
29AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202636AQI (US)
30
1
23
5
11
20
29
1
23
8
30
28
3
4
178
38
Highest AQI (US) recorded in
March53AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202539AQI (US)
30
1
28
25
6
25
5
27
4
23
7
22
9
22
9
30
24
7
28
2
27
4
311
54
Highest AQI (US) recorded in
July46AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202436AQI (US)
28
2
28
1
25
6
18
12
28
3
23
7
28
3
29
2
27
3
31
28
2
31
324
41
Highest AQI (US) recorded in
April51AQI (US)
Lowest AQI (US) recorded in
December31AQI (US)
202338AQI (US)
20
10
26
2
21
10
22
8
27
4
28
2
24
7
31
30
31
23
6
26
5
309
54
Highest AQI (US) recorded in
April48AQI (US)
Lowest AQI (US) recorded in
October31AQI (US)
202237AQI (US)
28
2
20
1
23
8
20
10
21
10
21
9
21
3
1
27
1
26
5
25
5
31
264
54
Highest AQI (US) recorded in
April45AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202135AQI (US)
28
2
21
7
25
4
19
2
27
4
22
8
25
6
31
30
28
3
26
4
26
5
308
45
Highest AQI (US) recorded in
June44AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202034AQI (US)
12
1
18
3
18
27
3
29
2
18
11
2
19
29
2
21
9
28
3
219
34
2
Highest AQI (US) recorded in
August55AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
39AQI (US)Least Polluted Year Recorded
2020(Avg.)
34AQI (US)Sakaki's annual 2026 AQI (US) (36) shows an average percentage change of -1.1% (improved AQI (US)) compared to previous years: 2020 (34), 2021 (35), 2022 (37), 2023 (38), 2024 (36), 2025 (39).
