Suwa, 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
Suwa, Nagano, Japan
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
3rd Aug 2024
62AQILowest AQI recorded on
28th Aug 2024
14AQISame Day Analysis (1st August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 35 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 31st Jul - 1st Aug 2026
Suwa, Nagano, Japan
AQI
Day
Night
.
4 AM31st Jul 2026
7 PM
3 AM1st Aug 2026
Day time
Avg. Highest Time
6PM31st Jul
56AQI
Avg. Lowest Time
8AM31st Jul
21AQI
Night time
Avg. Highest Time
7PM31st Jul
57AQI
Avg. Lowest Time
2AM1st Aug
25AQI
In the last 24 hours,
Suwa's AQI reached its highest point of 57 at 7 PM during the Night, while the lowest point, 21, was recorded at 8 AM during the Day between 31st Jul and 1st Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Suwa, Nagano, Japan
JulAug
03rd - 04th04th - 05th05th - 06th06th - 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
Day
Night
3rd Jul 202664 AMAQI
3rd Jul 202665 AMAQI
3rd Jul 202666 AMAQI
3rd Jul 202687 AMAQI
3rd Jul 202688 AMAQI
3rd Jul 202669 AMAQI
3rd Jul 2026610 AMAQI
3rd Jul 2026811 AMAQI
3rd Jul 2026812 PMAQI
3rd Jul 2026101 PMAQI
3rd Jul 2026252 PMAQI
3rd Jul 2026253 PMAQI
3rd Jul 2026214 PMAQI
3rd Jul 2026315 PMAQI
3rd Jul 2026196 PMAQI
3rd Jul 2026237 PMAQI
3rd Jul 2026208 PMAQI
3rd Jul 2026179 PMAQI
3rd Jul 20262210 PMAQI
3rd Jul 20262211 PMAQI
4th Jul 20262612 AMAQI
4th Jul 2026271 AMAQI
4th Jul 2026282 AMAQI
4th Jul 2026253 AMAQI
18°C13/24°C
4th Jul 2026244 AMAQI
4th Jul 2026285 AMAQI
4th Jul 2026266 AMAQI
4th Jul 2026247 AMAQI
4th Jul 2026248 AMAQI
4th Jul 2026259 AMAQI
4th Jul 20262410 AMAQI
4th Jul 20262211 AMAQI
4th Jul 20262312 PMAQI
4th Jul 2026211 PMAQI
4th Jul 2026242 PMAQI
4th Jul 2026253 PMAQI
4th Jul 2026244 PMAQI
4th Jul 2026235 PMAQI
4th Jul 2026226 PMAQI
4th Jul 2026237 PMAQI
4th Jul 2026228 PMAQI
4th Jul 2026289 PMAQI
4th Jul 20262510 PMAQI
4th Jul 20262511 PMAQI
5th Jul 20262312 AMAQI
5th Jul 2026241 AMAQI
5th Jul 2026202 AMAQI
5th Jul 2026223 AMAQI
18°C13/22°C
5th Jul 2026204 AMAQI
5th Jul 2026225 AMAQI
5th Jul 2026226 AMAQI
5th Jul 2026227 AMAQI
5th Jul 2026208 AMAQI
5th Jul 2026189 AMAQI
5th Jul 20261910 AMAQI
5th Jul 2026811 AMAQI
5th Jul 20261312 PMAQI
5th Jul 2026191 PMAQI
5th Jul 2026212 PMAQI
5th Jul 2026263 PMAQI
5th Jul 2026234 PMAQI
5th Jul 202685 PMAQI
5th Jul 2026226 PMAQI
5th Jul 202687 PMAQI
5th Jul 2026208 PMAQI
5th Jul 202689 PMAQI
5th Jul 2026810 PMAQI
5th Jul 2026811 PMAQI
6th Jul 2026812 AMAQI
6th Jul 2026161 AMAQI
6th Jul 2026222 AMAQI
6th Jul 2026143 AMAQI
19°C14/23°C
6th Jul 2026154 AMAQI
6th Jul 2026175 AMAQI
6th Jul 2026126 AMAQI
6th Jul 2026187 AMAQI
6th Jul 202688 AMAQI
6th Jul 2026149 AMAQI
6th Jul 20262310 AMAQI
6th Jul 20262511 AMAQI
6th Jul 20261412 PMAQI
6th Jul 202681 PMAQI
6th Jul 202682 PMAQI
6th Jul 2026223 PMAQI
6th Jul 202684 PMAQI
6th Jul 2026175 PMAQI
6th Jul 2026196 PMAQI
6th Jul 2026197 PMAQI
6th Jul 2026228 PMAQI
6th Jul 2026249 PMAQI
6th Jul 20262510 PMAQI
6th Jul 20261811 PMAQI
7th Jul 2026812 AMAQI
7th Jul 2026281 AMAQI
7th Jul 2026212 AMAQI
7th Jul 2026283 AMAQI
18°C17/19°C
7th Jul 2026244 AMAQI
7th Jul 2026285 AMAQI
7th Jul 2026256 AMAQI
7th Jul 2026247 AMAQI
7th Jul 2026258 AMAQI
7th Jul 2026239 AMAQI
7th Jul 20262210 AMAQI
7th Jul 20262111 AMAQI
7th Jul 20262212 PMAQI
7th Jul 202681 PMAQI
7th Jul 2026222 PMAQI
7th Jul 2026273 PMAQI
7th Jul 2026244 PMAQI
7th Jul 2026285 PMAQI
7th Jul 2026266 PMAQI
7th Jul 2026267 PMAQI
7th Jul 2026248 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262710 PMAQI
7th Jul 20262511 PMAQI
8th Jul 20262912 AMAQI
8th Jul 2026281 AMAQI
8th Jul 2026282 AMAQI
8th Jul 2026263 AMAQI
19°C16/25°C
8th Jul 2026254 AMAQI
8th Jul 2026265 AMAQI
8th Jul 2026236 AMAQI
8th Jul 2026277 AMAQI
8th Jul 2026258 AMAQI
8th Jul 2026269 AMAQI
8th Jul 20262610 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262012 PMAQI
8th Jul 2026241 PMAQI
8th Jul 2026222 PMAQI
8th Jul 2026253 PMAQI
8th Jul 2026244 PMAQI
8th Jul 2026245 PMAQI
8th Jul 2026226 PMAQI
8th Jul 2026197 PMAQI
8th Jul 2026208 PMAQI
8th Jul 2026229 PMAQI
8th Jul 20262210 PMAQI
8th Jul 20262611 PMAQI
9th Jul 20263012 AMAQI
9th Jul 2026281 AMAQI
9th Jul 2026302 AMAQI
9th Jul 2026283 AMAQI
21°C18/29°C
9th Jul 2026304 AMAQI
9th Jul 2026265 AMAQI
9th Jul 2026286 AMAQI
9th Jul 2026287 AMAQI
9th Jul 2026268 AMAQI
9th Jul 2026249 AMAQI
9th Jul 20262610 AMAQI
9th Jul 20262411 AMAQI
9th Jul 20262412 PMAQI
9th Jul 2026231 PMAQI
9th Jul 2026242 PMAQI
9th Jul 2026273 PMAQI
9th Jul 2026254 PMAQI
9th Jul 2026245 PMAQI
9th Jul 2026246 PMAQI
9th Jul 2026267 PMAQI
9th Jul 2026268 PMAQI
9th Jul 2026269 PMAQI
9th Jul 20262710 PMAQI
9th Jul 20263111 PMAQI
10th Jul 20262912 AMAQI
10th Jul 2026321 AMAQI
10th Jul 2026282 AMAQI
10th Jul 2026303 AMAQI
22°C17/30°C
10th Jul 2026274 AMAQI
10th Jul 2026285 AMAQI
10th Jul 2026306 AMAQI
10th Jul 2026307 AMAQI
10th Jul 2026288 AMAQI
10th Jul 2026309 AMAQI
10th Jul 20263010 AMAQI
10th Jul 20262811 AMAQI
10th Jul 20262812 PMAQI
10th Jul 2026251 PMAQI
10th Jul 2026242 PMAQI
10th Jul 2026243 PMAQI
10th Jul 2026264 PMAQI
10th Jul 2026305 PMAQI
10th Jul 2026306 PMAQI
10th Jul 2026327 PMAQI
10th Jul 2026328 PMAQI
10th Jul 2026309 PMAQI
10th Jul 20263210 PMAQI
10th Jul 20263211 PMAQI
11th Jul 20263212 AMAQI
11th Jul 2026331 AMAQI
11th Jul 2026332 AMAQI
11th Jul 2026333 AMAQI
23°C15/32°C
11th Jul 2026284 AMAQI
11th Jul 2026325 AMAQI
11th Jul 2026326 AMAQI
11th Jul 2026327 AMAQI
11th Jul 2026328 AMAQI
11th Jul 2026329 AMAQI
11th Jul 20263410 AMAQI
11th Jul 20262811 AMAQI
11th Jul 20262612 PMAQI
11th Jul 2026261 PMAQI
11th Jul 2026252 PMAQI
11th Jul 2026233 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026295 PMAQI
11th Jul 2026266 PMAQI
11th Jul 2026267 PMAQI
11th Jul 2026268 PMAQI
11th Jul 2026309 PMAQI
11th Jul 20262910 PMAQI
11th Jul 20262911 PMAQI
12th Jul 20263212 AMAQI
12th Jul 2026321 AMAQI
12th Jul 2026322 AMAQI
12th Jul 2026303 AMAQI
22°C16/29°C
12th Jul 2026284 AMAQI
12th Jul 2026305 AMAQI
12th Jul 2026326 AMAQI
12th Jul 2026297 AMAQI
12th Jul 2026298 AMAQI
12th Jul 2026299 AMAQI
12th Jul 20263110 AMAQI
12th Jul 20262611 AMAQI
12th Jul 20262612 PMAQI
12th Jul 2026231 PMAQI
12th Jul 2026222 PMAQI
12th Jul 2026213 PMAQI
12th Jul 2026244 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026286 PMAQI
12th Jul 2026267 PMAQI
12th Jul 2026278 PMAQI
12th Jul 2026309 PMAQI
12th Jul 20262810 PMAQI
12th Jul 20262811 PMAQI
13th Jul 20262912 AMAQI
13th Jul 2026291 AMAQI
13th Jul 2026282 AMAQI
13th Jul 2026293 AMAQI
20°C16/27°C
13th Jul 2026264 AMAQI
13th Jul 2026275 AMAQI
13th Jul 2026266 AMAQI
13th Jul 2026267 AMAQI
13th Jul 2026268 AMAQI
13th Jul 2026289 AMAQI
13th Jul 20262910 AMAQI
13th Jul 20262411 AMAQI
13th Jul 20262412 PMAQI
13th Jul 2026221 PMAQI
13th Jul 2026202 PMAQI
13th Jul 2026213 PMAQI
13th Jul 2026434 PMAQI
13th Jul 2026625 PMAQI
13th Jul 2026626 PMAQI
13th Jul 2026607 PMAQI
13th Jul 2026658 PMAQI
13th Jul 2026699 PMAQI
13th Jul 20264810 PMAQI
13th Jul 20265511 PMAQI
14th Jul 20263412 AMAQI
14th Jul 2026291 AMAQI
14th Jul 2026292 AMAQI
14th Jul 2026253 AMAQI
20°C16/26°C
14th Jul 2026244 AMAQI
14th Jul 2026135 AMAQI
14th Jul 2026146 AMAQI
14th Jul 2026197 AMAQI
14th Jul 2026178 AMAQI
14th Jul 2026259 AMAQI
14th Jul 20261710 AMAQI
14th Jul 20262211 AMAQI
14th Jul 20262512 PMAQI
14th Jul 2026261 PMAQI
14th Jul 2026342 PMAQI
14th Jul 2026403 PMAQI
14th Jul 2026384 PMAQI
14th Jul 2026595 PMAQI
14th Jul 2026546 PMAQI
14th Jul 2026377 PMAQI
14th Jul 2026578 PMAQI
14th Jul 2026429 PMAQI
14th Jul 20264310 PMAQI
14th Jul 20266911 PMAQI
15th Jul 20265212 AMAQI
15th Jul 2026561 AMAQI
15th Jul 2026552 AMAQI
15th Jul 2026313 AMAQI
22°C14/32°C
15th Jul 2026544 AMAQI
15th Jul 2026515 AMAQI
15th Jul 2026466 AMAQI
15th Jul 2026467 AMAQI
15th Jul 2026548 AMAQI
15th Jul 2026459 AMAQI
15th Jul 20266610 AMAQI
15th Jul 20266011 AMAQI
15th Jul 20265312 PMAQI
15th Jul 2026521 PMAQI
15th Jul 2026382 PMAQI
15th Jul 2026303 PMAQI
15th Jul 2026364 PMAQI
15th Jul 2026335 PMAQI
15th Jul 2026466 PMAQI
15th Jul 2026367 PMAQI
15th Jul 2026488 PMAQI
15th Jul 2026409 PMAQI
15th Jul 20264410 PMAQI
15th Jul 20265211 PMAQI
16th Jul 20265212 AMAQI
16th Jul 2026551 AMAQI
16th Jul 2026602 AMAQI
16th Jul 2026653 AMAQI
23°C16/33°C
16th Jul 2026674 AMAQI
16th Jul 2026595 AMAQI
16th Jul 2026606 AMAQI
16th Jul 2026607 AMAQI
16th Jul 2026558 AMAQI
16th Jul 2026559 AMAQI
16th Jul 20265410 AMAQI
16th Jul 20265611 AMAQI
16th Jul 20265612 PMAQI
16th Jul 2026591 PMAQI
16th Jul 2026462 PMAQI
16th Jul 2026623 PMAQI
16th Jul 2026594 PMAQI
16th Jul 2026555 PMAQI
16th Jul 2026486 PMAQI
16th Jul 2026517 PMAQI
16th Jul 2026608 PMAQI
16th Jul 2026559 PMAQI
16th Jul 20265210 PMAQI
16th Jul 20265511 PMAQI
17th Jul 20265712 AMAQI
17th Jul 2026361 AMAQI
17th Jul 2026542 AMAQI
17th Jul 2026513 AMAQI
23°C17/31°C
17th Jul 2026464 AMAQI
17th Jul 2026515 AMAQI
17th Jul 2026446 AMAQI
17th Jul 2026407 AMAQI
17th Jul 2026428 AMAQI
17th Jul 2026369 AMAQI
17th Jul 20263310 AMAQI
17th Jul 20262711 AMAQI
17th Jul 20263412 PMAQI
17th Jul 2026421 PMAQI
17th Jul 2026242 PMAQI
17th Jul 2026543 PMAQI
17th Jul 2026564 PMAQI
17th Jul 2026595 PMAQI
17th Jul 2026546 PMAQI
17th Jul 2026567 PMAQI
17th Jul 2026588 PMAQI
17th Jul 2026609 PMAQI
17th Jul 20265610 PMAQI
17th Jul 20264411 PMAQI
18th Jul 20263812 AMAQI
18th Jul 2026381 AMAQI
18th Jul 2026292 AMAQI
18th Jul 2026313 AMAQI
22°C18/28°C
18th Jul 2026334 AMAQI
18th Jul 2026315 AMAQI
18th Jul 2026296 AMAQI
18th Jul 2026297 AMAQI
18th Jul 2026318 AMAQI
18th Jul 2026279 AMAQI
18th Jul 20262710 AMAQI
18th Jul 20262511 AMAQI
18th Jul 20262312 PMAQI
18th Jul 2026171 PMAQI
18th Jul 2026172 PMAQI
18th Jul 2026193 PMAQI
18th Jul 2026254 PMAQI
18th Jul 2026295 PMAQI
18th Jul 2026326 PMAQI
18th Jul 2026367 PMAQI
18th Jul 2026318 PMAQI
18th Jul 2026319 PMAQI
18th Jul 20263410 PMAQI
18th Jul 20263111 PMAQI
19th Jul 20263112 AMAQI
19th Jul 2026311 AMAQI
19th Jul 2026292 AMAQI
19th Jul 2026253 AMAQI
22°C18/26°C
19th Jul 2026254 AMAQI
19th Jul 2026275 AMAQI
19th Jul 2026256 AMAQI
19th Jul 2026217 AMAQI
19th Jul 2026218 AMAQI
19th Jul 2026259 AMAQI
19th Jul 20262110 AMAQI
19th Jul 20262111 AMAQI
19th Jul 20262512 PMAQI
19th Jul 2026231 PMAQI
19th Jul 2026252 PMAQI
19th Jul 2026273 PMAQI
19th Jul 2026234 PMAQI
19th Jul 2026295 PMAQI
19th Jul 2026296 PMAQI
19th Jul 2026257 PMAQI
19th Jul 2026348 PMAQI
19th Jul 2026369 PMAQI
19th Jul 20263110 PMAQI
19th Jul 20263111 PMAQI
20th Jul 20262912 AMAQI
20th Jul 2026271 AMAQI
20th Jul 2026252 AMAQI
20th Jul 2026253 AMAQI
23°C17/31°C
20th Jul 2026254 AMAQI
20th Jul 2026255 AMAQI
20th Jul 2026296 AMAQI
20th Jul 2026297 AMAQI
20th Jul 2026298 AMAQI
20th Jul 2026259 AMAQI
20th Jul 20262710 AMAQI
20th Jul 20262711 AMAQI
20th Jul 20262912 PMAQI
20th Jul 2026401 PMAQI
20th Jul 2026272 PMAQI
20th Jul 2026313 PMAQI
20th Jul 2026314 PMAQI
20th Jul 2026365 PMAQI
20th Jul 2026316 PMAQI
20th Jul 2026337 PMAQI
20th Jul 2026318 PMAQI
20th Jul 2026339 PMAQI
20th Jul 20263610 PMAQI
20th Jul 20263111 PMAQI
21st Jul 20262712 AMAQI
21st Jul 2026271 AMAQI
21st Jul 2026332 AMAQI
21st Jul 2026333 AMAQI
23°C18/32°C
21st Jul 2026334 AMAQI
21st Jul 2026405 AMAQI
21st Jul 2026446 AMAQI
21st Jul 2026567 AMAQI
21st Jul 2026578 AMAQI
21st Jul 2026549 AMAQI
21st Jul 20265510 AMAQI
21st Jul 20265011 AMAQI
21st Jul 2026541 PMAQI
21st Jul 2026642 PMAQI
21st Jul 2026593 PMAQI
21st Jul 2026604 PMAQI
21st Jul 2026645 PMAQI
21st Jul 2026586 PMAQI
21st Jul 2026987 PMAQI
21st Jul 2026598 PMAQI
21st Jul 2026629 PMAQI
21st Jul 20265310 PMAQI
21st Jul 20265511 PMAQI
22nd Jul 20265412 AMAQI
22nd Jul 2026481 AMAQI
22nd Jul 2026522 AMAQI
22nd Jul 2026503 AMAQI
23°C17/32°C
22nd Jul 2026504 AMAQI
22nd Jul 2026425 AMAQI
22nd Jul 2026406 AMAQI
22nd Jul 2026387 AMAQI
22nd Jul 2026388 AMAQI
22nd Jul 2026409 AMAQI
22nd Jul 20264410 AMAQI
22nd Jul 20265311 AMAQI
22nd Jul 20266012 PMAQI
22nd Jul 2026691 PMAQI
22nd Jul 2026732 PMAQI
22nd Jul 2026703 PMAQI
22nd Jul 2026704 PMAQI
22nd Jul 2026725 PMAQI
22nd Jul 2026726 PMAQI
22nd Jul 2026667 PMAQI
22nd Jul 2026698 PMAQI
22nd Jul 2026689 PMAQI
22nd Jul 20267410 PMAQI
22nd Jul 20268611 PMAQI
23rd Jul 20268612 AMAQI
23rd Jul 2026881 AMAQI
23rd Jul 2026812 AMAQI
23rd Jul 2026723 AMAQI
24°C17/34°C
23rd Jul 2026714 AMAQI
23rd Jul 2026785 AMAQI
23rd Jul 2026646 AMAQI
23rd Jul 2026607 AMAQI
23rd Jul 2026668 AMAQI
23rd Jul 2026689 AMAQI
23rd Jul 20265810 AMAQI
23rd Jul 20265011 AMAQI
23rd Jul 20262312 PMAQI
23rd Jul 2026211 PMAQI
23rd Jul 2026252 PMAQI
23rd Jul 2026383 PMAQI
23rd Jul 2026334 PMAQI
23rd Jul 2026405 PMAQI
23rd Jul 2026506 PMAQI
23rd Jul 2026387 PMAQI
23rd Jul 2026388 PMAQI
23rd Jul 2026449 PMAQI
23rd Jul 20264610 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20263812 AMAQI
24th Jul 2026361 AMAQI
24th Jul 2026382 AMAQI
24th Jul 2026403 AMAQI
24°C16/34°C
24th Jul 2026404 AMAQI
24th Jul 2026465 AMAQI
24th Jul 2026596 AMAQI
24th Jul 2026717 AMAQI
24th Jul 2026748 AMAQI
24th Jul 2026729 AMAQI
24th Jul 20267110 AMAQI
24th Jul 20266011 AMAQI
24th Jul 20265312 PMAQI
24th Jul 2026521 PMAQI
24th Jul 2026292 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026364 PMAQI
24th Jul 2026275 PMAQI
24th Jul 2026426 PMAQI
24th Jul 2026337 PMAQI
24th Jul 2026338 PMAQI
24th Jul 2026369 PMAQI
24th Jul 20263610 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20262712 AMAQI
25th Jul 2026291 AMAQI
25th Jul 2026292 AMAQI
25th Jul 2026383 AMAQI
23°C16/33°C
25th Jul 2026364 AMAQI
25th Jul 2026365 AMAQI
25th Jul 2026256 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026388 AMAQI
25th Jul 2026409 AMAQI
25th Jul 20264010 AMAQI
25th Jul 20264211 AMAQI
25th Jul 20264912 PMAQI
25th Jul 2026481 PMAQI
25th Jul 2026482 PMAQI
25th Jul 2026573 PMAQI
25th Jul 2026534 PMAQI
25th Jul 2026515 PMAQI
25th Jul 2026546 PMAQI
25th Jul 2026517 PMAQI
25th Jul 2026468 PMAQI
25th Jul 2026449 PMAQI
25th Jul 20264210 PMAQI
25th Jul 20264611 PMAQI
26th Jul 20264812 AMAQI
26th Jul 2026421 AMAQI
26th Jul 2026402 AMAQI
26th Jul 2026383 AMAQI
22°C16/33°C
26th Jul 2026364 AMAQI
26th Jul 2026385 AMAQI
26th Jul 2026236 AMAQI
26th Jul 2026317 AMAQI
26th Jul 2026368 AMAQI
26th Jul 2026299 AMAQI
26th Jul 20263610 AMAQI
26th Jul 20263611 AMAQI
26th Jul 20264412 PMAQI
26th Jul 2026511 PMAQI
26th Jul 2026562 PMAQI
26th Jul 2026553 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026425 PMAQI
26th Jul 2026386 PMAQI
26th Jul 2026447 PMAQI
26th Jul 2026448 PMAQI
26th Jul 2026409 PMAQI
26th Jul 20263810 PMAQI
26th Jul 20263811 PMAQI
27th Jul 20262712 AMAQI
27th Jul 2026251 AMAQI
27th Jul 2026212 AMAQI
27th Jul 2026423 AMAQI
21°C15/28°C
27th Jul 2026324 AMAQI
27th Jul 2026405 AMAQI
27th Jul 2026466 AMAQI
27th Jul 2026467 AMAQI
27th Jul 2026428 AMAQI
27th Jul 2026469 AMAQI
27th Jul 20263610 AMAQI
27th Jul 20262311 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026272 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026214 PMAQI
27th Jul 2026235 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026278 PMAQI
27th Jul 2026319 PMAQI
27th Jul 20262710 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262112 AMAQI
28th Jul 2026291 AMAQI
28th Jul 2026212 AMAQI
28th Jul 2026213 AMAQI
20°C14/28°C
28th Jul 2026274 AMAQI
28th Jul 2026335 AMAQI
28th Jul 2026346 AMAQI
28th Jul 2026307 AMAQI
28th Jul 2026318 AMAQI
28th Jul 2026369 AMAQI
28th Jul 20262510 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026211 PMAQI
28th Jul 2026492 PMAQI
28th Jul 2026523 PMAQI
28th Jul 2026444 PMAQI
28th Jul 2026315 PMAQI
28th Jul 2026256 PMAQI
28th Jul 2026217 PMAQI
28th Jul 2026278 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20265212 AMAQI
29th Jul 2026291 AMAQI
29th Jul 2026332 AMAQI
29th Jul 2026333 AMAQI
18°C14/26°C
29th Jul 2026294 AMAQI
29th Jul 2026215 AMAQI
29th Jul 2026216 AMAQI
29th Jul 2026217 AMAQI
29th Jul 2026218 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262711 AMAQI
29th Jul 20262312 PMAQI
29th Jul 2026271 PMAQI
29th Jul 2026272 PMAQI
29th Jul 2026273 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026335 PMAQI
29th Jul 2026336 PMAQI
29th Jul 2026317 PMAQI
29th Jul 2026338 PMAQI
29th Jul 2026369 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20263611 PMAQI
30th Jul 20263112 AMAQI
30th Jul 2026311 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026233 AMAQI
20°C13/29°C
30th Jul 2026234 AMAQI
30th Jul 2026255 AMAQI
30th Jul 2026236 AMAQI
30th Jul 2026217 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262311 AMAQI
30th Jul 20262712 PMAQI
30th Jul 2026291 PMAQI
30th Jul 2026312 PMAQI
30th Jul 2026293 PMAQI
30th Jul 2026274 PMAQI
30th Jul 2026315 PMAQI
30th Jul 2026296 PMAQI
30th Jul 2026277 PMAQI
30th Jul 2026298 PMAQI
30th Jul 2026389 PMAQI
30th Jul 20264210 PMAQI
30th Jul 20262711 PMAQI
31st Jul 20262912 AMAQI
31st Jul 2026311 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026273 AMAQI
22°C15/31°C
31st Jul 2026294 AMAQI
31st Jul 2026235 AMAQI
31st Jul 2026216 AMAQI
31st Jul 2026217 AMAQI
31st Jul 2026218 AMAQI
31st Jul 2026259 AMAQI
31st Jul 20262510 AMAQI
31st Jul 20263311 AMAQI
31st Jul 20265012 PMAQI
31st Jul 2026551 PMAQI
31st Jul 2026532 PMAQI
31st Jul 2026543 PMAQI
31st Jul 2026524 PMAQI
31st Jul 2026545 PMAQI
31st Jul 2026566 PMAQI
31st Jul 2026577 PMAQI
31st Jul 2026408 PMAQI
31st Jul 2026369 PMAQI
31st Jul 20263310 PMAQI
31st Jul 20263311 PMAQI
1st Aug 20262512 AMAQI
1st Aug 2026291 AMAQI
1st Aug 2026252 AMAQI
1st Aug 2026443 AMAQI
22°C15/31°C
1st Aug 2026384 AMAQI
4 AM1st Aug 2026335 AMAQI
1st Aug 2026336 AMAQI
1st Aug 2026407 AMAQI
1st Aug 2026388 AMAQI
1st Aug 2026369 AMAQI
1st Aug 20263610 AMAQI
1st Aug 20263811 AMAQI
11 AM1st Aug 20264412 PMAQI
1st Aug 2026401 PMAQI
1st Aug 2026402 PMAQI
1st Aug 2026383 PMAQI
1st Aug 2026334 PMAQI
1st Aug 2026345 PMAQI
1st Aug 2026336 PMAQI
1st Aug 2026367 PMAQI
7 PM1st Aug 2026338 PMAQI
1st Aug 2026369 PMAQI
1st Aug 20262910 PMAQI
1st Aug 20263111 PMAQI
11 PM3 AM
22°C16/31°C
Day time
Avg. Highest Time
5 PM - 7 PM
37AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
6 AM
31AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 PM to 7 PM (Avg. 37), while the lowest AQI was between 6 AM to 6 AM (Avg. 31).
Night time
Avg. Highest Time
8 PM - 11 PM
37AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
2 AM - 3 AM
33AQI
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. 37), while the lowest AQI was between 2 AM to 3 AM (Avg. 33).
2026 Days Vs Air Quality
Suwa, Nagano, Japan
2026
87%
185
13%
28
Total number of days with different AQI categories in last 213 days in 2026 (152 days remaining)
Good
185 DaysModerate
28 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 213 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
Suwa, 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
13AQI (US)
13AQI (US)
2nd January 2026
11AQI (US)
11AQI (US)
3rd January 2026
12AQI (US)
12AQI (US)
4th January 2026
19AQI (US)
19AQI (US)
5th January 2026
27AQI (US)
27AQI (US)
6th January 2026
17AQI (US)
17AQI (US)
7th January 2026
26AQI (US)
26AQI (US)
8th January 2026
23AQI (US)
23AQI (US)
9th January 2026
17AQI (US)
17AQI (US)
10th January 2026
36AQI (US)
36AQI (US)
11th January 2026
26AQI (US)
26AQI (US)
12th January 2026
12AQI (US)
12AQI (US)
13th January 2026
21AQI (US)
21AQI (US)
14th January 2026
12AQI (US)
12AQI (US)
15th January 2026
34AQI (US)
34AQI (US)
16th January 2026
46AQI (US)
46AQI (US)
17th January 2026
51AQI (US)
51AQI (US)
18th January 2026
40AQI (US)
40AQI (US)
19th January 2026
50AQI (US)
50AQI (US)
20th January 2026
30AQI (US)
30AQI (US)
21st January 2026
15AQI (US)
15AQI (US)
22nd January 2026
17AQI (US)
17AQI (US)
23rd January 2026
25AQI (US)
25AQI (US)
24th January 2026
39AQI (US)
39AQI (US)
25th January 2026
43AQI (US)
43AQI (US)
26th January 2026
21AQI (US)
21AQI (US)
27th January 2026
39AQI (US)
39AQI (US)
28th January 2026
27AQI (US)
27AQI (US)
29th January 2026
31AQI (US)
31AQI (US)
30th January 2026
40AQI (US)
40AQI (US)
31st January 2026
17AQI (US)
17AQI (US)
1st February 2026
33AQI (US)
33AQI (US)
2nd February 2026
41AQI (US)
41AQI (US)
3rd February 2026
29AQI (US)
29AQI (US)
4th February 2026
26AQI (US)
26AQI (US)
5th February 2026
51AQI (US)
51AQI (US)
6th February 2026
53AQI (US)
53AQI (US)
7th February 2026
13AQI (US)
13AQI (US)
8th February 2026
10AQI (US)
10AQI (US)
9th February 2026
31AQI (US)
31AQI (US)
10th February 2026
35AQI (US)
35AQI (US)
11th February 2026
40AQI (US)
40AQI (US)
12th February 2026
50AQI (US)
50AQI (US)
13th February 2026
66AQI (US)
66AQI (US)
14th February 2026
55AQI (US)
55AQI (US)
15th February 2026
58AQI (US)
58AQI (US)
16th February 2026
55AQI (US)
55AQI (US)
17th February 2026
24AQI (US)
24AQI (US)
18th February 2026
23AQI (US)
23AQI (US)
19th February 2026
42AQI (US)
42AQI (US)
20th February 2026
33AQI (US)
33AQI (US)
21st February 2026
52AQI (US)
52AQI (US)
22nd February 2026
40AQI (US)
40AQI (US)
23rd February 2026
48AQI (US)
48AQI (US)
24th February 2026
50AQI (US)
50AQI (US)
25th February 2026
20AQI (US)
20AQI (US)
26th February 2026
12AQI (US)
12AQI (US)
27th February 2026
18AQI (US)
18AQI (US)
28th February 2026
15AQI (US)
15AQI (US)
1st March 2026
21AQI (US)
21AQI (US)
2nd March 2026
56AQI (US)
56AQI (US)
3rd March 2026
36AQI (US)
36AQI (US)
4th March 2026
44AQI (US)
44AQI (US)
5th March 2026
49AQI (US)
49AQI (US)
6th March 2026
41AQI (US)
41AQI (US)
7th March 2026
35AQI (US)
35AQI (US)
8th March 2026
35AQI (US)
35AQI (US)
9th March 2026
40AQI (US)
40AQI (US)
10th March 2026
52AQI (US)
52AQI (US)
11th March 2026
50AQI (US)
50AQI (US)
12th March 2026
54AQI (US)
54AQI (US)
13th March 2026
33AQI (US)
33AQI (US)
14th March 2026
39AQI (US)
39AQI (US)
15th March 2026
45AQI (US)
45AQI (US)
16th March 2026
44AQI (US)
44AQI (US)
17th March 2026
44AQI (US)
44AQI (US)
18th March 2026
46AQI (US)
46AQI (US)
19th March 2026
23AQI (US)
23AQI (US)
20th March 2026
55AQI (US)
55AQI (US)
21st March 2026
50AQI (US)
50AQI (US)
22nd March 2026
48AQI (US)
48AQI (US)
23rd March 2026
48AQI (US)
48AQI (US)
24th March 2026
44AQI (US)
44AQI (US)
25th March 2026
46AQI (US)
46AQI (US)
26th March 2026
10AQI (US)
10AQI (US)
27th March 2026
21AQI (US)
21AQI (US)
28th March 2026
56AQI (US)
56AQI (US)
29th March 2026
61AQI (US)
61AQI (US)
30th March 2026
51AQI (US)
51AQI (US)
31st March 2026
16AQI (US)
16AQI (US)
1st April 2026
17AQI (US)
17AQI (US)
2nd April 2026
28AQI (US)
28AQI (US)
3rd April 2026
45AQI (US)
45AQI (US)
4th April 2026
34AQI (US)
34AQI (US)
5th April 2026
16AQI (US)
16AQI (US)
6th April 2026
39AQI (US)
39AQI (US)
7th April 2026
36AQI (US)
36AQI (US)
8th April 2026
26AQI (US)
26AQI (US)
9th April 2026
21AQI (US)
21AQI (US)
10th April 2026
28AQI (US)
28AQI (US)
11th April 2026
30AQI (US)
30AQI (US)
12th April 2026
30AQI (US)
30AQI (US)
13th April 2026
31AQI (US)
31AQI (US)
14th April 2026
42AQI (US)
42AQI (US)
15th April 2026
21AQI (US)
21AQI (US)
16th April 2026
23AQI (US)
23AQI (US)
17th April 2026
32AQI (US)
32AQI (US)
18th April 2026
33AQI (US)
33AQI (US)
19th April 2026
32AQI (US)
32AQI (US)
20th April 2026
31AQI (US)
31AQI (US)
21st April 2026
31AQI (US)
31AQI (US)
22nd April 2026
30AQI (US)
30AQI (US)
23rd April 2026
26AQI (US)
26AQI (US)
24th April 2026
17AQI (US)
17AQI (US)
25th April 2026
26AQI (US)
26AQI (US)
26th April 2026
39AQI (US)
39AQI (US)
27th April 2026
38AQI (US)
38AQI (US)
28th April 2026
34AQI (US)
34AQI (US)
29th April 2026
30AQI (US)
30AQI (US)
30th April 2026
24AQI (US)
24AQI (US)
1st May 2026
21AQI (US)
21AQI (US)
2nd May 2026
43AQI (US)
43AQI (US)
3rd May 2026
52AQI (US)
52AQI (US)
4th May 2026
22AQI (US)
22AQI (US)
5th May 2026
21AQI (US)
21AQI (US)
6th May 2026
28AQI (US)
28AQI (US)
7th May 2026
28AQI (US)
28AQI (US)
8th May 2026
27AQI (US)
27AQI (US)
9th May 2026
24AQI (US)
24AQI (US)
10th May 2026
27AQI (US)
27AQI (US)
11th May 2026
29AQI (US)
29AQI (US)
12th May 2026
34AQI (US)
34AQI (US)
13th May 2026
39AQI (US)
39AQI (US)
14th May 2026
30AQI (US)
30AQI (US)
15th May 2026
32AQI (US)
32AQI (US)
16th May 2026
84AQI (US)
84AQI (US)
17th May 2026
68AQI (US)
68AQI (US)
18th May 2026
53AQI (US)
53AQI (US)
19th May 2026
48AQI (US)
48AQI (US)
20th May 2026
62AQI (US)
62AQI (US)
21st May 2026
60AQI (US)
60AQI (US)
22nd May 2026
63AQI (US)
63AQI (US)
23rd May 2026
55AQI (US)
55AQI (US)
24th May 2026
59AQI (US)
59AQI (US)
25th May 2026
49AQI (US)
49AQI (US)
26th May 2026
39AQI (US)
39AQI (US)
27th May 2026
19AQI (US)
19AQI (US)
28th May 2026
27AQI (US)
27AQI (US)
29th May 2026
22AQI (US)
22AQI (US)
30th May 2026
21AQI (US)
21AQI (US)
31st May 2026
36AQI (US)
36AQI (US)
1st June 2026
37AQI (US)
37AQI (US)
2nd June 2026
21AQI (US)
21AQI (US)
3rd June 2026
18AQI (US)
18AQI (US)
4th June 2026
18AQI (US)
18AQI (US)
5th June 2026
20AQI (US)
20AQI (US)
6th June 2026
23AQI (US)
23AQI (US)
7th June 2026
20AQI (US)
20AQI (US)
8th June 2026
15AQI (US)
15AQI (US)
9th June 2026
20AQI (US)
20AQI (US)
10th June 2026
21AQI (US)
21AQI (US)
11th June 2026
23AQI (US)
23AQI (US)
12th June 2026
24AQI (US)
24AQI (US)
13th June 2026
23AQI (US)
23AQI (US)
14th June 2026
23AQI (US)
23AQI (US)
15th June 2026
19AQI (US)
19AQI (US)
16th June 2026
24AQI (US)
24AQI (US)
17th June 2026
24AQI (US)
24AQI (US)
18th June 2026
24AQI (US)
24AQI (US)
19th June 2026
26AQI (US)
26AQI (US)
20th June 2026
26AQI (US)
26AQI (US)
21st June 2026
13AQI (US)
13AQI (US)
22nd June 2026
15AQI (US)
15AQI (US)
23rd June 2026
17AQI (US)
17AQI (US)
24th June 2026
20AQI (US)
20AQI (US)
25th June 2026
21AQI (US)
21AQI (US)
26th June 2026
22AQI (US)
22AQI (US)
27th June 2026
22AQI (US)
22AQI (US)
28th June 2026
22AQI (US)
22AQI (US)
29th June 2026
30AQI (US)
30AQI (US)
30th June 2026
40AQI (US)
40AQI (US)
1st July 2026
43AQI (US)
43AQI (US)
2nd July 2026
18AQI (US)
18AQI (US)
3rd July 2026
14AQI (US)
14AQI (US)
4th July 2026
24AQI (US)
24AQI (US)
5th July 2026
18AQI (US)
18AQI (US)
6th July 2026
16AQI (US)
16AQI (US)
7th July 2026
23AQI (US)
23AQI (US)
8th July 2026
24AQI (US)
24AQI (US)
9th July 2026
26AQI (US)
26AQI (US)
10th July 2026
29AQI (US)
29AQI (US)
11th July 2026
29AQI (US)
29AQI (US)
12th July 2026
28AQI (US)
28AQI (US)
13th July 2026
37AQI (US)
37AQI (US)
14th July 2026
33AQI (US)
33AQI (US)
15th July 2026
47AQI (US)
47AQI (US)
16th July 2026
56AQI (US)
56AQI (US)
17th July 2026
46AQI (US)
46AQI (US)
18th July 2026
29AQI (US)
29AQI (US)
19th July 2026
27AQI (US)
27AQI (US)
20th July 2026
30AQI (US)
30AQI (US)
21st July 2026
52AQI (US)
52AQI (US)
22nd July 2026
58AQI (US)
58AQI (US)
23rd July 2026
53AQI (US)
53AQI (US)
24th July 2026
45AQI (US)
45AQI (US)
25th July 2026
42AQI (US)
42AQI (US)
26th July 2026
40AQI (US)
40AQI (US)
27th July 2026
31AQI (US)
31AQI (US)
28th July 2026
29AQI (US)
29AQI (US)
29th July 2026
29AQI (US)
29AQI (US)
30th July 2026
27AQI (US)
27AQI (US)
31st July 2026
37AQI (US)
37AQI (US)
1st August 2026
35AQI (US)
35AQI (US)
2nd August 2026
3rd August 2026
4th August 2026
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
27AQI (US)
37AQI (US)
42AQI (US)
30AQI (US)
39AQI (US)
22AQI (US)
34AQI (US)
35AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202633AQI (US)
30
1
21
7
24
7
30
22
9
30
27
4
1
185
28
Highest AQI (US) recorded in
March42AQI (US)
Lowest AQI (US) recorded in
June22AQI (US)
202538AQI (US)
30
1
28
26
5
26
4
27
4
27
3
23
8
24
7
30
31
25
5
29
2
326
39
Highest AQI (US) recorded in
July46AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202434AQI (US)
30
29
30
1
23
7
31
22
8
31
29
2
27
3
31
30
31
344
21
Highest AQI (US) recorded in
April46AQI (US)
Lowest AQI (US) recorded in
January27AQI (US)
202337AQI (US)
30
28
27
4
22
8
27
4
28
2
22
9
31
29
1
31
28
1
31
334
29
Highest AQI (US) recorded in
April45AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
202236AQI (US)
29
21
29
2
23
6
25
6
26
4
18
3
1
26
2
31
30
31
290
23
Highest AQI (US) recorded in
May44AQI (US)
Lowest AQI (US) recorded in
August21AQI (US)
202132AQI (US)
29
2
26
2
28
1
21
29
2
26
4
28
3
31
29
1
31
28
2
29
2
335
17
2
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
January25AQI (US)
202031AQI (US)
13
19
2
18
24
6
30
1
17
13
1
19
30
1
28
2
31
229
25
1
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
December23AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2025(Avg.)
38AQI (US)Least Polluted Year Recorded
2020(Avg.)
31AQI (US)Suwa's annual 2026 AQI (US) (33) shows an average percentage change of -4.2% (improved AQI (US)) compared to previous years: 2020 (31), 2021 (32), 2022 (36), 2023 (37), 2024 (34), 2025 (38).
