Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Siena, Tuscany, Italy 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+

July Air Quality Analysis

Siena, Tuscany, Italy

2022
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
27th Jul 2026
64AQI
Lowest AQI recorded on
3rd Jul 2026
8AQI

Same Day Analysis (30th July):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 58 of Moderate air quality on the same day.

Day & Night AQI Trend: 30th Jul - 31st Jul 2026

Siena, Tuscany, Italy

AQI
Day
Night
.

5 AM30th Jul 2026

8 PM

4 AM31st Jul 2026

Day time
Avg. Highest Time
8AM30th Jul

64AQI

Avg. Lowest Time
7PM30th Jul

52AQI

Night time
Avg. Highest Time
4AM31st Jul

68AQI

Avg. Lowest Time
9PM30th Jul

54AQI

In the last 24 hours,

Siena's AQI reached its highest point of 68 at 4 AM during the Night, while the lowest point, 52, was recorded at 7 PM during the Day between 30th Jul and 31st Jul 2026.

Day & Night AQI Trend : Jul 2026

Siena, Tuscany, Italy

Jul
02nd - 03rd03rd - 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
Day
Night
2nd Jul 2026165 AMAQI
2nd Jul 2026186 AMAQI
2nd Jul 202687 AMAQI
2nd Jul 202688 AMAQI
2nd Jul 2026119 AMAQI
2nd Jul 20261010 AMAQI
2nd Jul 20261011 AMAQI
2nd Jul 2026812 PMAQI
2nd Jul 202681 PMAQI
2nd Jul 202682 PMAQI
2nd Jul 2026103 PMAQI
2nd Jul 2026194 PMAQI
2nd Jul 2026145 PMAQI
2nd Jul 2026166 PMAQI
2nd Jul 202647 PMAQI
2nd Jul 202698 PMAQI
2nd Jul 202669 PMAQI
2nd Jul 2026810 PMAQI
2nd Jul 2026811 PMAQI
3rd Jul 20261212 AMAQI
3rd Jul 202671 AMAQI
3rd Jul 202662 AMAQI
3rd Jul 2026123 AMAQI
3rd Jul 2026104 AMAQI

25°C20/31°C

3rd Jul 202675 AMAQI
3rd Jul 202686 AMAQI
3rd Jul 2026107 AMAQI
3rd Jul 202668 AMAQI
3rd Jul 202679 AMAQI
3rd Jul 2026710 AMAQI
3rd Jul 20261111 AMAQI
3rd Jul 20261212 PMAQI
3rd Jul 202681 PMAQI
3rd Jul 202682 PMAQI
3rd Jul 2026113 PMAQI
3rd Jul 202664 PMAQI
3rd Jul 202685 PMAQI
3rd Jul 202666 PMAQI
3rd Jul 202677 PMAQI
3rd Jul 202678 PMAQI
3rd Jul 202669 PMAQI
3rd Jul 20261010 PMAQI
3rd Jul 2026811 PMAQI
4th Jul 2026812 AMAQI
4th Jul 2026181 AMAQI
4th Jul 2026242 AMAQI
4th Jul 2026233 AMAQI
4th Jul 2026224 AMAQI

28°C22/35°C

4th Jul 2026185 AMAQI
4th Jul 2026226 AMAQI
4th Jul 2026257 AMAQI
4th Jul 2026268 AMAQI
4th Jul 2026259 AMAQI
4th Jul 20262610 AMAQI
4th Jul 20262211 AMAQI
4th Jul 20262512 PMAQI
4th Jul 2026231 PMAQI
4th Jul 2026262 PMAQI
4th Jul 2026263 PMAQI
4th Jul 2026234 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026196 PMAQI
4th Jul 2026187 PMAQI
4th Jul 2026228 PMAQI
4th Jul 2026229 PMAQI
4th Jul 20262110 PMAQI
4th Jul 20262211 PMAQI
5th Jul 20262212 AMAQI
5th Jul 2026231 AMAQI
5th Jul 2026192 AMAQI
5th Jul 2026203 AMAQI
5th Jul 2026194 AMAQI

27°C21/33°C

5th Jul 2026195 AMAQI
5th Jul 2026196 AMAQI
5th Jul 2026237 AMAQI
5th Jul 2026288 AMAQI
5th Jul 2026329 AMAQI
5th Jul 20262610 AMAQI
5th Jul 20264011 AMAQI
5th Jul 20262712 PMAQI
5th Jul 2026241 PMAQI
5th Jul 2026262 PMAQI
5th Jul 2026223 PMAQI
5th Jul 2026244 PMAQI
5th Jul 2026265 PMAQI
5th Jul 2026256 PMAQI
5th Jul 2026257 PMAQI
5th Jul 2026228 PMAQI
5th Jul 2026199 PMAQI
5th Jul 20262210 PMAQI
5th Jul 20262211 PMAQI
6th Jul 20262412 AMAQI
6th Jul 2026241 AMAQI
6th Jul 2026202 AMAQI
6th Jul 2026183 AMAQI
6th Jul 2026184 AMAQI

26°C22/30°C

6th Jul 2026195 AMAQI
6th Jul 2026186 AMAQI
6th Jul 2026207 AMAQI
6th Jul 2026308 AMAQI
6th Jul 2026229 AMAQI
6th Jul 20261910 AMAQI
6th Jul 20261811 AMAQI
6th Jul 20262112 PMAQI
6th Jul 2026251 PMAQI
6th Jul 2026262 PMAQI
6th Jul 2026263 PMAQI
6th Jul 2026264 PMAQI
6th Jul 2026285 PMAQI
6th Jul 2026226 PMAQI
6th Jul 2026277 PMAQI
6th Jul 2026238 PMAQI
6th Jul 2026179 PMAQI
6th Jul 20262410 PMAQI
6th Jul 20262611 PMAQI
7th Jul 20262612 AMAQI
7th Jul 2026281 AMAQI
7th Jul 2026202 AMAQI
7th Jul 2026193 AMAQI
7th Jul 2026224 AMAQI

26°C21/30°C

7th Jul 2026245 AMAQI
7th Jul 2026226 AMAQI
7th Jul 2026227 AMAQI
7th Jul 2026288 AMAQI
7th Jul 2026249 AMAQI
7th Jul 20263210 AMAQI
7th Jul 20262611 AMAQI
7th Jul 20263012 PMAQI
7th Jul 2026251 PMAQI
7th Jul 2026262 PMAQI
7th Jul 2026263 PMAQI
7th Jul 2026184 PMAQI
7th Jul 2026285 PMAQI
7th Jul 2026286 PMAQI
7th Jul 2026277 PMAQI
7th Jul 2026288 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262810 PMAQI
7th Jul 20262511 PMAQI
8th Jul 20262612 AMAQI
8th Jul 2026181 AMAQI
8th Jul 2026202 AMAQI
8th Jul 2026203 AMAQI
8th Jul 2026244 AMAQI

25°C21/30°C

8th Jul 2026235 AMAQI
8th Jul 2026176 AMAQI
8th Jul 2026167 AMAQI
8th Jul 2026248 AMAQI
8th Jul 2026269 AMAQI
8th Jul 20262510 AMAQI
8th Jul 20262211 AMAQI
8th Jul 20262012 PMAQI
8th Jul 2026201 PMAQI
8th Jul 2026202 PMAQI
8th Jul 2026173 PMAQI
8th Jul 2026264 PMAQI
8th Jul 2026295 PMAQI
8th Jul 2026286 PMAQI
8th Jul 2026287 PMAQI
8th Jul 2026308 PMAQI
8th Jul 2026289 PMAQI
8th Jul 20262610 PMAQI
8th Jul 20262411 PMAQI
9th Jul 20262612 AMAQI
9th Jul 2026381 AMAQI
9th Jul 2026422 AMAQI
9th Jul 2026393 AMAQI
9th Jul 2026384 AMAQI

26°C21/30°C

9th Jul 2026425 AMAQI
9th Jul 2026226 AMAQI
9th Jul 2026487 AMAQI
9th Jul 2026568 AMAQI
9th Jul 2026569 AMAQI
9th Jul 20264310 AMAQI
9th Jul 20263411 AMAQI
9th Jul 20263812 PMAQI
9th Jul 2026241 PMAQI
9th Jul 2026222 PMAQI
9th Jul 2026133 PMAQI
9th Jul 2026154 PMAQI
9th Jul 2026185 PMAQI
9th Jul 2026196 PMAQI
9th Jul 2026187 PMAQI
9th Jul 2026128 PMAQI
9th Jul 2026129 PMAQI
9th Jul 20261510 PMAQI
9th Jul 20261711 PMAQI
10th Jul 20262012 AMAQI
10th Jul 2026151 AMAQI
10th Jul 2026142 AMAQI
10th Jul 2026163 AMAQI
10th Jul 2026224 AMAQI

26°C21/30°C

10th Jul 2026185 AMAQI
10th Jul 2026206 AMAQI
10th Jul 2026207 AMAQI
10th Jul 2026208 AMAQI
10th Jul 2026249 AMAQI
10th Jul 20262510 AMAQI
10th Jul 20262611 AMAQI
10th Jul 20262212 PMAQI
10th Jul 2026211 PMAQI
10th Jul 2026242 PMAQI
10th Jul 2026243 PMAQI
10th Jul 2026254 PMAQI
10th Jul 2026225 PMAQI
10th Jul 2026206 PMAQI
10th Jul 2026207 PMAQI
10th Jul 2026238 PMAQI
10th Jul 2026209 PMAQI
10th Jul 20262210 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20262612 AMAQI
11th Jul 2026261 AMAQI
11th Jul 2026342 AMAQI
11th Jul 2026263 AMAQI
11th Jul 2026264 AMAQI

26°C21/30°C

11th Jul 2026245 AMAQI
11th Jul 2026366 AMAQI
11th Jul 2026457 AMAQI
11th Jul 2026258 AMAQI
11th Jul 2026469 AMAQI
11th Jul 20264710 AMAQI
11th Jul 20264611 AMAQI
11th Jul 20264012 PMAQI
11th Jul 2026471 PMAQI
11th Jul 2026402 PMAQI
11th Jul 2026363 PMAQI
11th Jul 2026384 PMAQI
11th Jul 2026485 PMAQI
11th Jul 2026386 PMAQI
11th Jul 2026437 PMAQI
11th Jul 2026308 PMAQI
11th Jul 2026329 PMAQI
11th Jul 20262810 PMAQI
11th Jul 20262811 PMAQI
12th Jul 20262812 AMAQI
12th Jul 2026241 AMAQI
12th Jul 2026202 AMAQI
12th Jul 2026163 AMAQI
12th Jul 2026144 AMAQI

26°C22/30°C

12th Jul 2026125 AMAQI
12th Jul 2026126 AMAQI
12th Jul 2026167 AMAQI
12th Jul 2026208 AMAQI
12th Jul 2026229 AMAQI
12th Jul 20262410 AMAQI
12th Jul 20262011 AMAQI
12th Jul 20261412 PMAQI
12th Jul 2026141 PMAQI
12th Jul 2026122 PMAQI
12th Jul 2026163 PMAQI
12th Jul 2026244 PMAQI
12th Jul 2026155 PMAQI
12th Jul 2026186 PMAQI
12th Jul 2026167 PMAQI
12th Jul 2026158 PMAQI
12th Jul 2026169 PMAQI
12th Jul 20261610 PMAQI
12th Jul 20261211 PMAQI
13th Jul 20261512 AMAQI
13th Jul 2026121 AMAQI
13th Jul 2026132 AMAQI
13th Jul 2026163 AMAQI
13th Jul 2026164 AMAQI

26°C21/30°C

13th Jul 2026175 AMAQI
13th Jul 2026206 AMAQI
13th Jul 2026207 AMAQI
13th Jul 2026248 AMAQI
13th Jul 2026229 AMAQI
13th Jul 20262810 AMAQI
13th Jul 20263011 AMAQI
13th Jul 20263012 PMAQI
13th Jul 2026311 PMAQI
13th Jul 2026292 PMAQI
13th Jul 2026313 PMAQI
13th Jul 2026314 PMAQI
13th Jul 2026325 PMAQI
13th Jul 2026316 PMAQI
13th Jul 2026307 PMAQI
13th Jul 2026288 PMAQI
13th Jul 2026289 PMAQI
13th Jul 20262810 PMAQI
13th Jul 20262811 PMAQI
14th Jul 20262912 AMAQI
14th Jul 2026241 AMAQI
14th Jul 2026302 AMAQI
14th Jul 2026553 AMAQI
14th Jul 2026504 AMAQI

27°C23/31°C

14th Jul 2026365 AMAQI
14th Jul 2026446 AMAQI
14th Jul 2026317 AMAQI
14th Jul 2026278 AMAQI
14th Jul 2026289 AMAQI
14th Jul 20262510 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20262512 PMAQI
14th Jul 2026271 PMAQI
14th Jul 2026262 PMAQI
14th Jul 2026263 PMAQI
14th Jul 2026404 PMAQI
14th Jul 2026385 PMAQI
14th Jul 2026386 PMAQI
14th Jul 2026347 PMAQI
14th Jul 2026308 PMAQI
14th Jul 2026369 PMAQI
14th Jul 20263210 PMAQI
14th Jul 20263811 PMAQI
15th Jul 20263612 AMAQI
15th Jul 2026361 AMAQI
15th Jul 2026312 AMAQI
15th Jul 2026313 AMAQI
15th Jul 2026324 AMAQI

27°C22/31°C

15th Jul 2026315 AMAQI
15th Jul 2026366 AMAQI
15th Jul 2026347 AMAQI
15th Jul 2026368 AMAQI
15th Jul 2026469 AMAQI
15th Jul 20264910 AMAQI
15th Jul 20265411 AMAQI
15th Jul 20264712 PMAQI
15th Jul 2026501 PMAQI
15th Jul 2026542 PMAQI
15th Jul 2026443 PMAQI
15th Jul 2026444 PMAQI
15th Jul 2026525 PMAQI
15th Jul 2026466 PMAQI
15th Jul 2026427 PMAQI
15th Jul 2026288 PMAQI
15th Jul 2026289 PMAQI
15th Jul 20263010 PMAQI
15th Jul 20263711 PMAQI
16th Jul 20262812 AMAQI
16th Jul 2026261 AMAQI
16th Jul 2026442 AMAQI
16th Jul 2026493 AMAQI
16th Jul 2026484 AMAQI

27°C22/31°C

16th Jul 2026425 AMAQI
16th Jul 2026406 AMAQI
16th Jul 2026307 AMAQI
16th Jul 2026328 AMAQI
16th Jul 2026429 AMAQI
16th Jul 20265110 AMAQI
16th Jul 20265211 AMAQI
16th Jul 20264912 PMAQI
16th Jul 2026501 PMAQI
16th Jul 2026502 PMAQI
16th Jul 2026483 PMAQI
16th Jul 2026394 PMAQI
16th Jul 2026365 PMAQI
16th Jul 2026476 PMAQI
16th Jul 2026417 PMAQI
16th Jul 2026398 PMAQI
16th Jul 2026499 PMAQI
16th Jul 20264610 PMAQI
16th Jul 20264811 PMAQI
17th Jul 20265012 AMAQI
17th Jul 2026491 AMAQI
17th Jul 2026582 AMAQI
17th Jul 2026563 AMAQI
17th Jul 2026564 AMAQI

28°C23/33°C

17th Jul 2026495 AMAQI
17th Jul 2026546 AMAQI
17th Jul 2026597 AMAQI
17th Jul 2026608 AMAQI
17th Jul 2026869 AMAQI
17th Jul 20269010 AMAQI
17th Jul 20266711 AMAQI
17th Jul 20266412 PMAQI
17th Jul 2026601 PMAQI
17th Jul 2026562 PMAQI
17th Jul 2026583 PMAQI
17th Jul 2026604 PMAQI
17th Jul 2026555 PMAQI
17th Jul 2026536 PMAQI
17th Jul 2026507 PMAQI
17th Jul 2026498 PMAQI
17th Jul 2026509 PMAQI
17th Jul 20265310 PMAQI
17th Jul 20266111 PMAQI
18th Jul 20265312 AMAQI
18th Jul 2026601 AMAQI
18th Jul 2026592 AMAQI
18th Jul 2026653 AMAQI
18th Jul 2026624 AMAQI

27°C23/31°C

18th Jul 2026595 AMAQI
18th Jul 2026606 AMAQI
18th Jul 2026667 AMAQI
18th Jul 2026668 AMAQI
18th Jul 2026609 AMAQI
18th Jul 20266010 AMAQI
18th Jul 20266011 AMAQI
18th Jul 20265412 PMAQI
18th Jul 2026551 PMAQI
18th Jul 2026542 PMAQI
18th Jul 2026563 PMAQI
18th Jul 2026564 PMAQI
18th Jul 2026545 PMAQI
18th Jul 2026556 PMAQI
18th Jul 2026547 PMAQI
18th Jul 2026568 PMAQI
18th Jul 2026589 PMAQI
18th Jul 20266110 PMAQI
18th Jul 20265411 PMAQI
19th Jul 20265012 AMAQI
19th Jul 2026541 AMAQI
19th Jul 2026522 AMAQI
19th Jul 2026603 AMAQI
19th Jul 2026474 AMAQI

27°C23/32°C

19th Jul 2026485 AMAQI
19th Jul 2026526 AMAQI
19th Jul 2026427 AMAQI
19th Jul 2026398 AMAQI
19th Jul 2026459 AMAQI
19th Jul 20262610 AMAQI
19th Jul 20262411 AMAQI
19th Jul 20263212 PMAQI
19th Jul 2026341 PMAQI
19th Jul 2026432 PMAQI
19th Jul 2026463 PMAQI
19th Jul 2026454 PMAQI
19th Jul 2026465 PMAQI
19th Jul 2026286 PMAQI
19th Jul 2026287 PMAQI
19th Jul 2026298 PMAQI
19th Jul 2026389 PMAQI
19th Jul 20264210 PMAQI
19th Jul 20265111 PMAQI
20th Jul 20264412 AMAQI
20th Jul 2026431 AMAQI
20th Jul 2026522 AMAQI
20th Jul 2026443 AMAQI
20th Jul 2026514 AMAQI

28°C23/32°C

20th Jul 2026505 AMAQI
20th Jul 2026486 AMAQI
20th Jul 2026437 AMAQI
20th Jul 2026328 AMAQI
20th Jul 2026369 AMAQI
20th Jul 20264410 AMAQI
20th Jul 20264811 AMAQI
20th Jul 20264212 PMAQI
20th Jul 2026331 PMAQI
20th Jul 2026422 PMAQI
20th Jul 2026443 PMAQI
20th Jul 2026364 PMAQI
20th Jul 2026325 PMAQI
20th Jul 2026326 PMAQI
20th Jul 2026347 PMAQI
20th Jul 2026308 PMAQI
20th Jul 2026309 PMAQI
20th Jul 20262910 PMAQI
20th Jul 20262811 PMAQI
21st Jul 20263012 AMAQI
21st Jul 2026321 AMAQI
21st Jul 2026302 AMAQI
21st Jul 2026323 AMAQI
21st Jul 2026304 AMAQI

28°C23/33°C

21st Jul 2026396 AMAQI
21st Jul 2026387 AMAQI
21st Jul 2026348 AMAQI
21st Jul 2026319 AMAQI
21st Jul 20262510 AMAQI
21st Jul 20262911 AMAQI
21st Jul 20263312 PMAQI
21st Jul 2026341 PMAQI
21st Jul 2026342 PMAQI
21st Jul 2026283 PMAQI
21st Jul 2026344 PMAQI
21st Jul 2026365 PMAQI
21st Jul 2026366 PMAQI
21st Jul 2026347 PMAQI
21st Jul 2026348 PMAQI
21st Jul 2026369 PMAQI
21st Jul 20263210 PMAQI
21st Jul 20264711 PMAQI
22nd Jul 20264912 AMAQI
22nd Jul 2026491 AMAQI
22nd Jul 2026482 AMAQI
22nd Jul 2026453 AMAQI
22nd Jul 2026534 AMAQI

27°C23/32°C

22nd Jul 2026505 AMAQI
22nd Jul 2026506 AMAQI
22nd Jul 2026467 AMAQI
22nd Jul 2026418 AMAQI
22nd Jul 2026429 AMAQI
22nd Jul 20264210 AMAQI
22nd Jul 20264411 AMAQI
22nd Jul 20262512 PMAQI
22nd Jul 2026361 PMAQI
22nd Jul 2026322 PMAQI
22nd Jul 2026403 PMAQI
22nd Jul 2026344 PMAQI
22nd Jul 2026365 PMAQI
22nd Jul 2026346 PMAQI
22nd Jul 2026267 PMAQI
22nd Jul 2026408 PMAQI
22nd Jul 2026429 PMAQI
22nd Jul 20263210 PMAQI
22nd Jul 20263211 PMAQI
23rd Jul 20263612 AMAQI
23rd Jul 2026341 AMAQI
23rd Jul 2026342 AMAQI
23rd Jul 2026273 AMAQI
23rd Jul 2026344 AMAQI

27°C22/33°C

23rd Jul 2026385 AMAQI
23rd Jul 2026386 AMAQI
23rd Jul 2026347 AMAQI
23rd Jul 2026288 AMAQI
23rd Jul 2026369 AMAQI
23rd Jul 20262610 AMAQI
23rd Jul 20262411 AMAQI
23rd Jul 20263012 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026442 PMAQI
23rd Jul 2026343 PMAQI
23rd Jul 2026284 PMAQI
23rd Jul 2026325 PMAQI
23rd Jul 2026326 PMAQI
23rd Jul 2026307 PMAQI
23rd Jul 2026398 PMAQI
23rd Jul 2026349 PMAQI
23rd Jul 20263410 PMAQI
23rd Jul 20263611 PMAQI
24th Jul 20264012 AMAQI
24th Jul 2026241 AMAQI
24th Jul 2026262 AMAQI
24th Jul 2026303 AMAQI
24th Jul 2026304 AMAQI

26°C21/31°C

24th Jul 2026345 AMAQI
24th Jul 2026276 AMAQI
24th Jul 2026277 AMAQI
24th Jul 2026308 AMAQI
24th Jul 2026369 AMAQI
24th Jul 20263410 AMAQI
24th Jul 20264211 AMAQI
24th Jul 20263612 PMAQI
24th Jul 2026361 PMAQI
24th Jul 2026302 PMAQI
24th Jul 2026283 PMAQI
24th Jul 2026244 PMAQI
24th Jul 2026335 PMAQI
24th Jul 2026326 PMAQI
24th Jul 2026267 PMAQI
24th Jul 2026418 PMAQI
24th Jul 2026389 PMAQI
24th Jul 20262810 PMAQI
24th Jul 20262311 PMAQI
25th Jul 20263012 AMAQI
25th Jul 2026281 AMAQI
25th Jul 2026382 AMAQI
25th Jul 2026553 AMAQI
25th Jul 2026554 AMAQI

26°C20/33°C

25th Jul 2026355 AMAQI
25th Jul 2026366 AMAQI
25th Jul 2026287 AMAQI
25th Jul 2026258 AMAQI
25th Jul 2026249 AMAQI
25th Jul 20263010 AMAQI
25th Jul 20263911 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026301 PMAQI
25th Jul 2026362 PMAQI
25th Jul 2026323 PMAQI
25th Jul 2026424 PMAQI
25th Jul 2026525 PMAQI
25th Jul 2026466 PMAQI
25th Jul 2026497 PMAQI
25th Jul 2026608 PMAQI
25th Jul 2026409 PMAQI
25th Jul 20263610 PMAQI
25th Jul 20264511 PMAQI
26th Jul 20265012 AMAQI
26th Jul 2026361 AMAQI
26th Jul 2026282 AMAQI
26th Jul 2026243 AMAQI
26th Jul 2026284 AMAQI

26°C20/30°C

26th Jul 2026305 AMAQI
26th Jul 2026376 AMAQI
26th Jul 2026297 AMAQI
26th Jul 2026378 AMAQI
26th Jul 2026349 AMAQI
26th Jul 20264510 AMAQI
26th Jul 20264911 AMAQI
26th Jul 20263912 PMAQI
26th Jul 2026501 PMAQI
26th Jul 2026452 PMAQI
26th Jul 2026453 PMAQI
26th Jul 2026404 PMAQI
26th Jul 2026565 PMAQI
26th Jul 2026776 PMAQI
26th Jul 2026727 PMAQI
26th Jul 2026648 PMAQI
26th Jul 2026629 PMAQI
26th Jul 20266010 PMAQI
26th Jul 20266011 PMAQI
27th Jul 20266612 AMAQI
27th Jul 2026641 AMAQI
27th Jul 2026622 AMAQI
27th Jul 2026623 AMAQI
27th Jul 2026624 AMAQI

27°C22/30°C

27th Jul 2026675 AMAQI
27th Jul 2026706 AMAQI
27th Jul 2026667 AMAQI
27th Jul 2026708 AMAQI
27th Jul 2026709 AMAQI
27th Jul 20266910 AMAQI
27th Jul 20266411 AMAQI
27th Jul 20265912 PMAQI
27th Jul 2026641 PMAQI
27th Jul 2026642 PMAQI
27th Jul 2026623 PMAQI
27th Jul 2026644 PMAQI
27th Jul 2026665 PMAQI
27th Jul 2026666 PMAQI
27th Jul 2026627 PMAQI
27th Jul 2026628 PMAQI
27th Jul 2026619 PMAQI
27th Jul 20266210 PMAQI
27th Jul 20266411 PMAQI
28th Jul 20266212 AMAQI
28th Jul 2026641 AMAQI
28th Jul 2026662 AMAQI
28th Jul 2026683 AMAQI
28th Jul 2026684 AMAQI

25°C21/30°C

28th Jul 2026685 AMAQI
28th Jul 2026706 AMAQI
28th Jul 2026707 AMAQI
28th Jul 2026728 AMAQI
28th Jul 2026689 AMAQI
28th Jul 20266710 AMAQI
28th Jul 20266511 AMAQI
28th Jul 20265812 PMAQI
28th Jul 2026561 PMAQI
28th Jul 2026562 PMAQI
28th Jul 2026523 PMAQI
28th Jul 2026514 PMAQI
28th Jul 2026485 PMAQI
28th Jul 2026466 PMAQI
28th Jul 2026467 PMAQI
28th Jul 2026448 PMAQI
28th Jul 2026469 PMAQI
28th Jul 20264310 PMAQI
28th Jul 20264811 PMAQI
29th Jul 20264812 AMAQI
29th Jul 2026511 AMAQI
29th Jul 2026522 AMAQI
29th Jul 2026543 AMAQI
29th Jul 2026614 AMAQI

27°C22/32°C

29th Jul 2026605 AMAQI
29th Jul 2026626 AMAQI
29th Jul 2026647 AMAQI
29th Jul 2026668 AMAQI
29th Jul 2026619 AMAQI
29th Jul 20266710 AMAQI
29th Jul 20266011 AMAQI
29th Jul 20265912 PMAQI
29th Jul 2026521 PMAQI
29th Jul 2026482 PMAQI
29th Jul 2026523 PMAQI
29th Jul 2026484 PMAQI
29th Jul 2026495 PMAQI
29th Jul 2026526 PMAQI
29th Jul 2026497 PMAQI
29th Jul 2026488 PMAQI
29th Jul 2026509 PMAQI
29th Jul 20264910 PMAQI
29th Jul 20265211 PMAQI
30th Jul 20265512 AMAQI
30th Jul 2026541 AMAQI
30th Jul 2026582 AMAQI
30th Jul 2026563 AMAQI
30th Jul 2026624 AMAQI

29°C24/33°C

30th Jul 2026575 AMAQI
30th Jul 2026606 AMAQI
30th Jul 2026607 AMAQI
30th Jul 2026648 AMAQI
30th Jul 2026609 AMAQI
30th Jul 20265810 AMAQI
30th Jul 20266011 AMAQI
30th Jul 20266012 PMAQI
30th Jul 2026581 PMAQI
30th Jul 2026602 PMAQI
30th Jul 2026563 PMAQI
30th Jul 2026584 PMAQI
30th Jul 2026585 PMAQI
30th Jul 2026556 PMAQI
30th Jul 2026527 PMAQI
30th Jul 2026568 PMAQI
30th Jul 2026549 PMAQI
30th Jul 20265810 PMAQI
30th Jul 20265711 PMAQI
31st Jul 20265812 AMAQI
31st Jul 2026641 AMAQI
31st Jul 2026642 AMAQI
31st Jul 2026673 AMAQI
31st Jul 2026684 AMAQI

29°C24/33°C

31st Jul 2026605 AMAQI
5 AM
31st Jul 2026566 AMAQI
31st Jul 2026607 AMAQI
31st Jul 2026628 AMAQI
31st Jul 2026689 AMAQI
31st Jul 20266810 AMAQI
31st Jul 20266611 AMAQI
31st Jul 20266012 PMAQI
12 PM
31st Jul 2026601 PMAQI
31st Jul 2026532 PMAQI
31st Jul 2026533 PMAQI
31st Jul 2026494 PMAQI
31st Jul 2026445 PMAQI
31st Jul 2026416 PMAQI
31st Jul 2026487 PMAQI
31st Jul 2026558 PMAQI
8 PM
31st Jul 2026869 PMAQI
31st Jul 20267810 PMAQI
31st Jul 20265411 PMAQI
12 AM
4 AM

29°C24/34°C

Day time
Avg. Highest Time
9 AM - 11 AM

40AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
12 PM - 8 PM

36AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 AM to 11 AM (Avg. 40), while the lowest AQI was between 12 PM to 8 PM (Avg. 36).
Night time
Avg. Highest Time
3 AM - 4 AM

38AQI

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

36AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 4 AM (Avg. 38), while the lowest AQI was between 12 AM to 2 AM (Avg. 36).

2026 Days Vs Air Quality

Siena, Tuscany, Italy

2026

61%

127

33%

68

6%

13

Total number of days with different AQI categories in last 212 days in 2026 (153 days remaining)

Good
127 Days
Moderate
68 Days
Poor
13 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 61%

Health Risk Level:

Moderate

In 2026, 61% of 212 days were within WHO’s safe air quality limits, and 39% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights

Siena, Tuscany, Italy

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
74AQI (US)
2nd January 2026
66AQI (US)
3rd January 2026
64AQI (US)
4th January 2026
72AQI (US)
5th January 2026
49AQI (US)
6th January 2026
63AQI (US)
7th January 2026
62AQI (US)
8th January 2026
57AQI (US)
9th January 2026
84AQI (US)
10th January 2026
76AQI (US)
11th January 2026
49AQI (US)
12th January 2026
50AQI (US)
13th January 2026
72AQI (US)
14th January 2026
76AQI (US)
15th January 2026
86AQI (US)
16th January 2026
90AQI (US)
17th January 2026
86AQI (US)
18th January 2026
77AQI (US)
19th January 2026
59AQI (US)
20th January 2026
62AQI (US)
21st January 2026
81AQI (US)
22nd January 2026
104AQI (US)
23rd January 2026
124AQI (US)
24th January 2026
82AQI (US)
25th January 2026
88AQI (US)
26th January 2026
90AQI (US)
27th January 2026
65AQI (US)
28th January 2026
48AQI (US)
29th January 2026
75AQI (US)
30th January 2026
95AQI (US)
31st January 2026
92AQI (US)
1st February 2026
87AQI (US)
2nd February 2026
90AQI (US)
3rd February 2026
74AQI (US)
4th February 2026
53AQI (US)
5th February 2026
28AQI (US)
6th February 2026
46AQI (US)
7th February 2026
78AQI (US)
8th February 2026
90AQI (US)
9th February 2026
95AQI (US)
10th February 2026
88AQI (US)
11th February 2026
68AQI (US)
12th February 2026
68AQI (US)
13th February 2026
64AQI (US)
14th February 2026
42AQI (US)
15th February 2026
24AQI (US)
16th February 2026
58AQI (US)
17th February 2026
53AQI (US)
18th February 2026
36AQI (US)
19th February 2026
39AQI (US)
20th February 2026
56AQI (US)
21st February 2026
38AQI (US)
22nd February 2026
70AQI (US)
23rd February 2026
96AQI (US)
24th February 2026
108AQI (US)
25th February 2026
116AQI (US)
26th February 2026
124AQI (US)
27th February 2026
118AQI (US)
28th February 2026
117AQI (US)
1st March 2026
110AQI (US)
2nd March 2026
106AQI (US)
3rd March 2026
106AQI (US)
4th March 2026
106AQI (US)
5th March 2026
106AQI (US)
6th March 2026
100AQI (US)
7th March 2026
100AQI (US)
8th March 2026
108AQI (US)
9th March 2026
92AQI (US)
10th March 2026
96AQI (US)
11th March 2026
98AQI (US)
12th March 2026
76AQI (US)
13th March 2026
76AQI (US)
14th March 2026
44AQI (US)
15th March 2026
30AQI (US)
16th March 2026
56AQI (US)
17th March 2026
47AQI (US)
18th March 2026
34AQI (US)
19th March 2026
62AQI (US)
20th March 2026
60AQI (US)
21st March 2026
68AQI (US)
22nd March 2026
70AQI (US)
23rd March 2026
78AQI (US)
24th March 2026
74AQI (US)
25th March 2026
49AQI (US)
26th March 2026
20AQI (US)
27th March 2026
30AQI (US)
28th March 2026
34AQI (US)
29th March 2026
46AQI (US)
30th March 2026
48AQI (US)
31st March 2026
46AQI (US)
1st April 2026
16AQI (US)
2nd April 2026
24AQI (US)
3rd April 2026
34AQI (US)
4th April 2026
24AQI (US)
5th April 2026
44AQI (US)
6th April 2026
46AQI (US)
7th April 2026
46AQI (US)
8th April 2026
43AQI (US)
9th April 2026
26AQI (US)
10th April 2026
25AQI (US)
11th April 2026
52AQI (US)
12th April 2026
74AQI (US)
13th April 2026
49AQI (US)
14th April 2026
49AQI (US)
15th April 2026
62AQI (US)
16th April 2026
58AQI (US)
17th April 2026
18th April 2026
42AQI (US)
19th April 2026
44AQI (US)
20th April 2026
64AQI (US)
21st April 2026
20AQI (US)
22nd April 2026
23rd April 2026
26AQI (US)
24th April 2026
27AQI (US)
25th April 2026
30AQI (US)
26th April 2026
38AQI (US)
27th April 2026
42AQI (US)
28th April 2026
30AQI (US)
29th April 2026
39AQI (US)
30th April 2026
12AQI (US)
1st May 2026
14AQI (US)
2nd May 2026
16AQI (US)
3rd May 2026
14AQI (US)
4th May 2026
22AQI (US)
5th May 2026
38AQI (US)
6th May 2026
36AQI (US)
7th May 2026
27AQI (US)
8th May 2026
33AQI (US)
9th May 2026
10th May 2026
52AQI (US)
11th May 2026
46AQI (US)
12th May 2026
18AQI (US)
13th May 2026
44AQI (US)
14th May 2026
18AQI (US)
15th May 2026
26AQI (US)
16th May 2026
36AQI (US)
17th May 2026
41AQI (US)
18th May 2026
32AQI (US)
19th May 2026
36AQI (US)
20th May 2026
36AQI (US)
21st May 2026
42AQI (US)
22nd May 2026
37AQI (US)
23rd May 2026
39AQI (US)
24th May 2026
50AQI (US)
25th May 2026
48AQI (US)
26th May 2026
38AQI (US)
27th May 2026
26AQI (US)
28th May 2026
52AQI (US)
29th May 2026
21AQI (US)
30th May 2026
22AQI (US)
31st May 2026
22AQI (US)
1st June 2026
34AQI (US)
2nd June 2026
30AQI (US)
3rd June 2026
17AQI (US)
4th June 2026
26AQI (US)
5th June 2026
22AQI (US)
6th June 2026
24AQI (US)
7th June 2026
16AQI (US)
8th June 2026
22AQI (US)
9th June 2026
22AQI (US)
10th June 2026
26AQI (US)
11th June 2026
20AQI (US)
12th June 2026
24AQI (US)
13th June 2026
14AQI (US)
14th June 2026
26AQI (US)
15th June 2026
22AQI (US)
16th June 2026
28AQI (US)
17th June 2026
20AQI (US)
18th June 2026
24AQI (US)
19th June 2026
26AQI (US)
20th June 2026
24AQI (US)
21st June 2026
30AQI (US)
22nd June 2026
31AQI (US)
23rd June 2026
26AQI (US)
24th June 2026
28AQI (US)
25th June 2026
30AQI (US)
26th June 2026
32AQI (US)
27th June 2026
26AQI (US)
28th June 2026
34AQI (US)
29th June 2026
30AQI (US)
30th June 2026
22AQI (US)
1st July 2026
29AQI (US)
2nd July 2026
12AQI (US)
3rd July 2026
8AQI (US)
4th July 2026
22AQI (US)
5th July 2026
24AQI (US)
6th July 2026
22AQI (US)
7th July 2026
25AQI (US)
8th July 2026
23AQI (US)
9th July 2026
30AQI (US)
10th July 2026
21AQI (US)
11th July 2026
36AQI (US)
12th July 2026
17AQI (US)
13th July 2026
24AQI (US)
14th July 2026
34AQI (US)
15th July 2026
40AQI (US)
16th July 2026
42AQI (US)
17th July 2026
58AQI (US)
18th July 2026
58AQI (US)
19th July 2026
42AQI (US)
20th July 2026
39AQI (US)
21st July 2026
34AQI (US)
22nd July 2026
40AQI (US)
23rd July 2026
34AQI (US)
24th July 2026
32AQI (US)
25th July 2026
39AQI (US)
26th July 2026
46AQI (US)
27th July 2026
64AQI (US)
28th July 2026
58AQI (US)
29th July 2026
54AQI (US)
30th July 2026
58AQI (US)
31st July 2026
1st August 2026
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

75AQI (US)

72AQI (US)

70AQI (US)

39AQI (US)

33AQI (US)

25AQI (US)

36AQI (US)

No. of days

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

202650AQI (US)

4
25
2
7
16
5
11
14
6
23
5
28
2
30
24
6
127
68
13

Highest AQI (US) recorded in

January

75AQI (US)

Lowest AQI (US) recorded in

June

25AQI (US)

202550AQI (US)

14
17
8
16
4
24
7
30
31
19
11
31
22
9
28
2
2
29
3
27
2
28
1
214
146
5

Highest AQI (US) recorded in

December

83AQI (US)

Lowest AQI (US) recorded in

September

28AQI (US)

202441AQI (US)

6
5
2
2
4
2
4
1
15
30
31
29
21
7
30
1
19
11
13
18
204
47

Highest AQI (US) recorded in

February

56AQI (US)

Lowest AQI (US) recorded in

May

30AQI (US)

202350AQI (US)

1
8
4
1
9
4
1

Highest AQI (US) recorded in

December

52AQI (US)

Lowest AQI (US) recorded in

March

31AQI (US)

202246AQI (US)

9
11
15
2
3
19
10
21
3
16
5
13
3
2
89
43

Highest AQI (US) recorded in

March

58AQI (US)

Lowest AQI (US) recorded in

April

32AQI (US)

202140AQI (US)

12
8
10
10
13
9
21
23
18
3
18
4
16
7
18
5
19
1
24
11
10
203
57

Highest AQI (US) recorded in

February

50AQI (US)

Lowest AQI (US) recorded in

May

25AQI (US)

202039AQI (US)

5
5
8
5
13
1
20
20
2
18
5
15
7
23
10
12
11
9
143
46

Highest AQI (US) recorded in

November

54AQI (US)

Lowest AQI (US) recorded in

June

28AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2026(Avg.)
50AQI (US)
Least Polluted Year Recorded
2020(Avg.)
39AQI (US)

Siena's annual 2026 AQI (US) (50) shows an average percentage change of 13.9% (worsened AQI (US)) compared to previous years: 2020 (39), 2021 (40), 2022 (46), 2023 (50), 2024 (41), 2025 (50).