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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Cacem, Lisboa, Portugal 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+

September Air Quality Analysis

Cacem, Lisboa, Portugal

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
22nd Sep 2024
74AQI
Lowest AQI recorded on
22nd Sep 2025
18AQI

Same Day Analysis (28th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.

Day & Night AQI Trend: 28th Sep - 29th Sep 2026

Cacem, Lisboa, Portugal

AQI
Day
Night
.

7 AM28th Sep 2026

7 PM

6 AM29th Sep 2026

Day time
Avg. Highest Time
7AM28th Sep

29AQI

Avg. Lowest Time
4PM28th Sep

21AQI

Night time
Avg. Highest Time
3AM29th Sep

28AQI

Avg. Lowest Time
12AM29th Sep

22AQI

In the last 24 hours,

Cacem's AQI reached its highest point of 29 at 7 AM during the Day, while the lowest point, 21, was recorded at 4 PM during the Day between 28th Sep and 29th Sep 2026.

Day & Night AQI Trend : Aug - Sep 2026

Cacem, Lisboa, Portugal

AugSep
31st - 01st01st - 02nd02nd - 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
Day
Night
31st Aug 2026297 AMAQI
31st Aug 2026278 AMAQI
31st Aug 2026259 AMAQI
31st Aug 20262310 AMAQI
31st Aug 20262311 AMAQI
31st Aug 20262512 PMAQI
31st Aug 2026271 PMAQI
31st Aug 2026362 PMAQI
31st Aug 2026403 PMAQI
31st Aug 2026384 PMAQI
31st Aug 2026365 PMAQI
31st Aug 2026406 PMAQI
31st Aug 2026327 PMAQI
31st Aug 2026258 PMAQI
31st Aug 2026259 PMAQI
31st Aug 20262510 PMAQI
31st Aug 20262911 PMAQI
1st Sep 20262512 AMAQI
1st Sep 2026251 AMAQI
1st Sep 2026272 AMAQI
1st Sep 2026463 AMAQI
1st Sep 2026424 AMAQI
1st Sep 2026255 AMAQI
1st Sep 2026406 AMAQI

19°C18/19°C

1st Sep 2026347 AMAQI
1st Sep 2026298 AMAQI
1st Sep 2026299 AMAQI
1st Sep 20262910 AMAQI
1st Sep 20263611 AMAQI
1st Sep 20264212 PMAQI
1st Sep 2026421 PMAQI
1st Sep 2026462 PMAQI
1st Sep 2026403 PMAQI
1st Sep 2026324 PMAQI
1st Sep 2026295 PMAQI
1st Sep 2026256 PMAQI
1st Sep 2026257 PMAQI
1st Sep 2026298 PMAQI
1st Sep 2026299 PMAQI
1st Sep 20263410 PMAQI
1st Sep 20262911 PMAQI
2nd Sep 20263312 AMAQI
2nd Sep 2026381 AMAQI
2nd Sep 2026422 AMAQI
2nd Sep 2026253 AMAQI
2nd Sep 2026274 AMAQI
2nd Sep 2026295 AMAQI
2nd Sep 2026296 AMAQI

19°C18/19°C

2nd Sep 2026277 AMAQI
2nd Sep 2026298 AMAQI
2nd Sep 2026259 AMAQI
2nd Sep 20262310 AMAQI
2nd Sep 20262511 AMAQI
2nd Sep 20262712 PMAQI
2nd Sep 2026331 PMAQI
2nd Sep 2026292 PMAQI
2nd Sep 2026333 PMAQI
2nd Sep 2026334 PMAQI
2nd Sep 2026335 PMAQI
2nd Sep 2026316 PMAQI
2nd Sep 2026337 PMAQI
2nd Sep 2026368 PMAQI
2nd Sep 2026389 PMAQI
2nd Sep 20262910 PMAQI
2nd Sep 20262911 PMAQI
3rd Sep 20262912 AMAQI
3rd Sep 2026291 AMAQI
3rd Sep 2026332 AMAQI
3rd Sep 2026363 AMAQI
3rd Sep 2026364 AMAQI
3rd Sep 2026335 AMAQI
3rd Sep 2026386 AMAQI

19°C18/21°C

3rd Sep 2026347 AMAQI
3rd Sep 2026278 AMAQI
3rd Sep 2026309 AMAQI
3rd Sep 20262110 AMAQI
3rd Sep 20263011 AMAQI
3rd Sep 20263012 PMAQI
3rd Sep 2026211 PMAQI
3rd Sep 2026272 PMAQI
3rd Sep 2026213 PMAQI
3rd Sep 2026214 PMAQI
3rd Sep 2026215 PMAQI
3rd Sep 2026216 PMAQI
3rd Sep 2026237 PMAQI
3rd Sep 2026218 PMAQI
3rd Sep 2026259 PMAQI
3rd Sep 20262510 PMAQI
3rd Sep 20262511 PMAQI
4th Sep 20262512 AMAQI
4th Sep 2026211 AMAQI
4th Sep 2026212 AMAQI
4th Sep 2026213 AMAQI
4th Sep 2026214 AMAQI
4th Sep 2026215 AMAQI
4th Sep 2026216 AMAQI

23°C21/28°C

4th Sep 2026327 AMAQI
4th Sep 2026408 AMAQI
4th Sep 2026349 AMAQI
4th Sep 20264210 AMAQI
4th Sep 20266011 AMAQI
4th Sep 20264212 PMAQI
4th Sep 2026291 PMAQI
4th Sep 2026312 PMAQI
4th Sep 2026313 PMAQI
4th Sep 2026294 PMAQI
4th Sep 2026315 PMAQI
4th Sep 2026296 PMAQI
4th Sep 2026337 PMAQI
4th Sep 2026338 PMAQI
4th Sep 2026389 PMAQI
4th Sep 20263610 PMAQI
4th Sep 20263611 PMAQI
5th Sep 20263812 AMAQI
5th Sep 2026361 AMAQI
5th Sep 2026402 AMAQI
5th Sep 2026383 AMAQI
5th Sep 2026364 AMAQI
5th Sep 2026425 AMAQI
5th Sep 2026466 AMAQI

24°C22/28°C

5th Sep 2026447 AMAQI
5th Sep 2026448 AMAQI
5th Sep 2026469 AMAQI
5th Sep 20264410 AMAQI
5th Sep 20264411 AMAQI
5th Sep 20264412 PMAQI
5th Sep 2026401 PMAQI
5th Sep 2026382 PMAQI
5th Sep 2026423 PMAQI
5th Sep 2026464 PMAQI
5th Sep 2026515 PMAQI
5th Sep 2026446 PMAQI
5th Sep 2026407 PMAQI
5th Sep 2026388 PMAQI
5th Sep 2026409 PMAQI
5th Sep 20264410 PMAQI
5th Sep 20264011 PMAQI
6th Sep 20264012 AMAQI
6th Sep 2026401 AMAQI
6th Sep 2026382 AMAQI
6th Sep 2026363 AMAQI
6th Sep 2026424 AMAQI
6th Sep 2026335 AMAQI
6th Sep 2026336 AMAQI

22°C21/24°C

6th Sep 2026367 AMAQI
6th Sep 2026318 AMAQI
6th Sep 2026319 AMAQI
6th Sep 20263310 AMAQI
6th Sep 20262911 AMAQI
6th Sep 20262912 PMAQI
6th Sep 2026401 PMAQI
6th Sep 2026502 PMAQI
6th Sep 2026403 PMAQI
6th Sep 2026294 PMAQI
6th Sep 2026295 PMAQI
6th Sep 2026296 PMAQI
6th Sep 2026297 PMAQI
6th Sep 2026218 PMAQI
6th Sep 2026219 PMAQI
6th Sep 20263810 PMAQI
6th Sep 20263811 PMAQI
7th Sep 20262712 AMAQI
7th Sep 2026311 AMAQI
7th Sep 2026312 AMAQI
7th Sep 2026313 AMAQI
7th Sep 2026294 AMAQI
7th Sep 2026255 AMAQI
7th Sep 2026216 AMAQI

21°C19/22°C

7th Sep 2026257 AMAQI
7th Sep 2026278 AMAQI
7th Sep 2026299 AMAQI
7th Sep 20262710 AMAQI
7th Sep 20262911 AMAQI
7th Sep 20263812 PMAQI
7th Sep 2026401 PMAQI
7th Sep 2026292 PMAQI
7th Sep 2026213 PMAQI
7th Sep 2026254 PMAQI
7th Sep 2026255 PMAQI
7th Sep 2026256 PMAQI
7th Sep 2026217 PMAQI
7th Sep 2026258 PMAQI
7th Sep 2026259 PMAQI
7th Sep 20262510 PMAQI
7th Sep 20262511 PMAQI
8th Sep 20262512 AMAQI
8th Sep 2026251 AMAQI
8th Sep 2026332 AMAQI
8th Sep 2026383 AMAQI
8th Sep 2026314 AMAQI
8th Sep 2026335 AMAQI
8th Sep 2026296 AMAQI

19°C19/21°C

8th Sep 2026257 AMAQI
8th Sep 2026298 AMAQI
8th Sep 2026299 AMAQI
8th Sep 20263110 AMAQI
8th Sep 20262911 AMAQI
8th Sep 20262912 PMAQI
8th Sep 2026291 PMAQI
8th Sep 2026292 PMAQI
8th Sep 2026293 PMAQI
8th Sep 2026294 PMAQI
8th Sep 2026295 PMAQI
8th Sep 2026296 PMAQI
8th Sep 2026257 PMAQI
8th Sep 2026258 PMAQI
8th Sep 2026259 PMAQI
8th Sep 20262510 PMAQI
8th Sep 20262511 PMAQI
9th Sep 20262512 AMAQI
9th Sep 2026251 AMAQI
9th Sep 2026252 AMAQI
9th Sep 2026273 AMAQI
9th Sep 2026334 AMAQI
9th Sep 2026335 AMAQI
9th Sep 2026336 AMAQI

19°C18/20°C

9th Sep 2026327 AMAQI
9th Sep 2026298 AMAQI
9th Sep 2026299 AMAQI
9th Sep 20262910 AMAQI
9th Sep 20262911 AMAQI
9th Sep 20262712 PMAQI
9th Sep 2026251 PMAQI
9th Sep 2026272 PMAQI
9th Sep 2026273 PMAQI
9th Sep 2026314 PMAQI
9th Sep 2026315 PMAQI
9th Sep 2026296 PMAQI
9th Sep 2026297 PMAQI
9th Sep 2026298 PMAQI
9th Sep 2026299 PMAQI
9th Sep 20262910 PMAQI
9th Sep 20262911 PMAQI
10th Sep 20262912 AMAQI
10th Sep 2026311 AMAQI
10th Sep 2026332 AMAQI
10th Sep 2026253 AMAQI
10th Sep 2026254 AMAQI
10th Sep 2026295 AMAQI
10th Sep 2026256 AMAQI

19°C18/20°C

10th Sep 2026277 AMAQI
10th Sep 2026258 AMAQI
10th Sep 2026259 AMAQI
10th Sep 20262510 AMAQI
10th Sep 20262611 AMAQI
10th Sep 20262212 PMAQI
10th Sep 2026251 PMAQI
10th Sep 2026262 PMAQI
10th Sep 2026253 PMAQI
10th Sep 2026254 PMAQI
10th Sep 2026275 PMAQI
10th Sep 2026296 PMAQI
10th Sep 2026317 PMAQI
10th Sep 2026318 PMAQI
10th Sep 2026409 PMAQI
10th Sep 20262910 PMAQI
10th Sep 20262711 PMAQI
11th Sep 20262512 AMAQI
11th Sep 2026271 AMAQI
11th Sep 2026252 AMAQI
11th Sep 2026253 AMAQI
11th Sep 2026254 AMAQI
11th Sep 2026255 AMAQI
11th Sep 2026256 AMAQI

18°C18/19°C

11th Sep 2026427 AMAQI
11th Sep 2026338 AMAQI
11th Sep 2026299 AMAQI
11th Sep 20262910 AMAQI
11th Sep 20263311 AMAQI
11th Sep 20262912 PMAQI
11th Sep 2026331 PMAQI
11th Sep 2026272 PMAQI
11th Sep 2026273 PMAQI
11th Sep 2026294 PMAQI
11th Sep 2026255 PMAQI
11th Sep 2026296 PMAQI
11th Sep 2026297 PMAQI
11th Sep 2026298 PMAQI
11th Sep 2026259 PMAQI
11th Sep 20263210 PMAQI
11th Sep 20262511 PMAQI
12th Sep 20262512 AMAQI
12th Sep 2026321 AMAQI
12th Sep 2026292 AMAQI
12th Sep 2026233 AMAQI
12th Sep 2026294 AMAQI
12th Sep 2026295 AMAQI
12th Sep 2026256 AMAQI

19°C18/20°C

12th Sep 2026297 AMAQI
12th Sep 2026298 AMAQI
12th Sep 2026299 AMAQI
12th Sep 20262910 AMAQI
12th Sep 20262711 AMAQI
12th Sep 20262512 PMAQI
12th Sep 2026231 PMAQI
12th Sep 2026252 PMAQI
12th Sep 2026253 PMAQI
12th Sep 2026254 PMAQI
12th Sep 2026255 PMAQI
12th Sep 2026256 PMAQI
12th Sep 2026257 PMAQI
12th Sep 2026258 PMAQI
12th Sep 20262710 PMAQI
12th Sep 20262311 PMAQI
13th Sep 20262512 AMAQI
13th Sep 2026321 AMAQI
13th Sep 2026382 AMAQI
13th Sep 2026323 AMAQI
13th Sep 2026464 AMAQI
13th Sep 2026275 AMAQI
13th Sep 2026256 AMAQI

22°C20/24°C

13th Sep 2026257 AMAQI
13th Sep 2026298 AMAQI
13th Sep 2026299 AMAQI
13th Sep 20262910 AMAQI
13th Sep 20262511 AMAQI
13th Sep 20262912 PMAQI
13th Sep 2026331 PMAQI
13th Sep 2026292 PMAQI
13th Sep 2026333 PMAQI
13th Sep 2026334 PMAQI
13th Sep 2026335 PMAQI
13th Sep 2026386 PMAQI
13th Sep 2026297 PMAQI
13th Sep 2026258 PMAQI
13th Sep 2026279 PMAQI
13th Sep 20262510 PMAQI
13th Sep 20262511 PMAQI
14th Sep 20262912 AMAQI
14th Sep 2026291 AMAQI
14th Sep 2026212 AMAQI
14th Sep 2026323 AMAQI
14th Sep 2026334 AMAQI
14th Sep 2026335 AMAQI
14th Sep 2026296 AMAQI

22°C21/24°C

14th Sep 2026337 AMAQI
14th Sep 2026338 AMAQI
14th Sep 2026309 AMAQI
14th Sep 20263210 AMAQI
14th Sep 20263111 AMAQI
14th Sep 20263112 PMAQI
14th Sep 2026401 PMAQI
14th Sep 2026212 PMAQI
14th Sep 2026223 PMAQI
14th Sep 2026254 PMAQI
14th Sep 2026255 PMAQI
14th Sep 2026276 PMAQI
14th Sep 2026257 PMAQI
14th Sep 2026258 PMAQI
14th Sep 2026219 PMAQI
14th Sep 20262510 PMAQI
14th Sep 20262311 PMAQI
15th Sep 20262312 AMAQI
15th Sep 2026211 AMAQI
15th Sep 2026212 AMAQI
15th Sep 2026253 AMAQI
15th Sep 2026234 AMAQI
15th Sep 2026215 AMAQI
15th Sep 2026236 AMAQI

22°C21/23°C

15th Sep 2026217 AMAQI
15th Sep 2026218 AMAQI
15th Sep 2026279 AMAQI
15th Sep 20262710 AMAQI
15th Sep 20262511 AMAQI
15th Sep 20262512 PMAQI
15th Sep 2026251 PMAQI
15th Sep 2026252 PMAQI
15th Sep 2026273 PMAQI
15th Sep 2026254 PMAQI
15th Sep 2026255 PMAQI
15th Sep 2026256 PMAQI
15th Sep 2026277 PMAQI
15th Sep 2026298 PMAQI
15th Sep 2026299 PMAQI
15th Sep 20262510 PMAQI
15th Sep 20262511 PMAQI
16th Sep 20262512 AMAQI
16th Sep 2026211 AMAQI
16th Sep 2026212 AMAQI
16th Sep 2026213 AMAQI
16th Sep 2026254 AMAQI
16th Sep 2026275 AMAQI
16th Sep 2026386 AMAQI

19°C18/21°C

16th Sep 2026387 AMAQI
16th Sep 2026548 AMAQI
16th Sep 2026559 AMAQI
16th Sep 20266010 AMAQI
16th Sep 20265911 AMAQI
16th Sep 20265912 PMAQI
16th Sep 2026251 PMAQI
16th Sep 2026252 PMAQI
16th Sep 2026423 PMAQI
16th Sep 2026254 PMAQI
16th Sep 2026605 PMAQI
16th Sep 2026296 PMAQI
16th Sep 2026257 PMAQI
16th Sep 2026368 PMAQI
16th Sep 2026219 PMAQI
16th Sep 20262510 PMAQI
16th Sep 20262511 PMAQI
17th Sep 20262512 AMAQI
17th Sep 2026251 AMAQI
17th Sep 2026252 AMAQI
17th Sep 2026273 AMAQI
17th Sep 2026214 AMAQI
17th Sep 2026295 AMAQI
17th Sep 2026216 AMAQI

18°C18/19°C

17th Sep 2026237 AMAQI
17th Sep 2026258 AMAQI
17th Sep 2026229 AMAQI
17th Sep 20262210 AMAQI
17th Sep 20262511 AMAQI
17th Sep 20262512 PMAQI
17th Sep 2026241 PMAQI
17th Sep 2026272 PMAQI
17th Sep 2026253 PMAQI
17th Sep 2026214 PMAQI
17th Sep 2026215 PMAQI
17th Sep 2026216 PMAQI
17th Sep 2026257 PMAQI
17th Sep 2026248 PMAQI
17th Sep 2026239 PMAQI
17th Sep 20263810 PMAQI
17th Sep 20262911 PMAQI
18th Sep 20264212 AMAQI
18th Sep 2026271 AMAQI
18th Sep 2026332 AMAQI
18th Sep 2026403 AMAQI
18th Sep 2026314 AMAQI
18th Sep 2026295 AMAQI
18th Sep 2026236 AMAQI

18°C18/19°C

18th Sep 2026317 AMAQI
18th Sep 2026578 AMAQI
18th Sep 2026389 AMAQI
18th Sep 20263310 AMAQI
18th Sep 20263611 AMAQI
18th Sep 20264212 PMAQI
18th Sep 2026401 PMAQI
18th Sep 2026382 PMAQI
18th Sep 2026253 PMAQI
18th Sep 2026294 PMAQI
18th Sep 2026295 PMAQI
18th Sep 2026296 PMAQI
18th Sep 2026297 PMAQI
18th Sep 2026278 PMAQI
18th Sep 2026279 PMAQI
18th Sep 20262710 PMAQI
18th Sep 20262511 PMAQI
19th Sep 20262912 AMAQI
19th Sep 2026291 AMAQI
19th Sep 2026252 AMAQI
19th Sep 2026233 AMAQI
19th Sep 2026254 AMAQI
19th Sep 2026295 AMAQI
19th Sep 2026296 AMAQI

18°C17/18°C

19th Sep 2026297 AMAQI
19th Sep 2026278 AMAQI
19th Sep 2026469 AMAQI
19th Sep 20262910 AMAQI
19th Sep 20263111 AMAQI
19th Sep 20264212 PMAQI
19th Sep 2026381 PMAQI
19th Sep 2026402 PMAQI
19th Sep 2026343 PMAQI
19th Sep 2026464 PMAQI
19th Sep 2026565 PMAQI
19th Sep 2026466 PMAQI
19th Sep 2026427 PMAQI
19th Sep 2026518 PMAQI
19th Sep 2026219 PMAQI
19th Sep 20262310 PMAQI
19th Sep 20262711 PMAQI
20th Sep 20262112 AMAQI
20th Sep 2026291 AMAQI
20th Sep 2026232 AMAQI
20th Sep 2026213 AMAQI
20th Sep 2026234 AMAQI
20th Sep 2026295 AMAQI
20th Sep 2026316 AMAQI

21°C19/23°C

20th Sep 2026347 AMAQI
20th Sep 2026448 AMAQI
20th Sep 2026389 AMAQI
20th Sep 20262910 AMAQI
20th Sep 20262111 AMAQI
20th Sep 20262712 PMAQI
20th Sep 2026271 PMAQI
20th Sep 2026252 PMAQI
20th Sep 2026383 PMAQI
20th Sep 2026384 PMAQI
20th Sep 2026215 PMAQI
20th Sep 2026276 PMAQI
20th Sep 2026217 PMAQI
20th Sep 2026258 PMAQI
20th Sep 2026299 PMAQI
20th Sep 20263110 PMAQI
20th Sep 20262711 PMAQI
21st Sep 20262112 AMAQI
21st Sep 2026211 AMAQI
21st Sep 2026252 AMAQI
21st Sep 2026253 AMAQI
21st Sep 2026314 AMAQI
21st Sep 2026365 AMAQI
21st Sep 2026456 AMAQI

22°C20/24°C

21st Sep 2026547 AMAQI
21st Sep 2026368 AMAQI
21st Sep 2026239 AMAQI
21st Sep 20262110 AMAQI
21st Sep 20262511 AMAQI
21st Sep 20263112 PMAQI
21st Sep 2026251 PMAQI
21st Sep 2026272 PMAQI
21st Sep 2026343 PMAQI
21st Sep 2026404 PMAQI
21st Sep 2026265 PMAQI
21st Sep 2026406 PMAQI
21st Sep 2026427 PMAQI
21st Sep 2026408 PMAQI
21st Sep 2026429 PMAQI
21st Sep 20262110 PMAQI
21st Sep 20262111 PMAQI
22nd Sep 20262112 AMAQI
22nd Sep 2026211 AMAQI
22nd Sep 2026212 AMAQI
22nd Sep 2026213 AMAQI
22nd Sep 2026234 AMAQI
22nd Sep 2026215 AMAQI
22nd Sep 2026216 AMAQI

22°C21/24°C

22nd Sep 2026237 AMAQI
22nd Sep 2026218 AMAQI
22nd Sep 2026239 AMAQI
22nd Sep 20262110 AMAQI
22nd Sep 20262311 AMAQI
22nd Sep 20262112 PMAQI
22nd Sep 2026251 PMAQI
22nd Sep 2026212 PMAQI
22nd Sep 2026233 PMAQI
22nd Sep 2026254 PMAQI
22nd Sep 2026275 PMAQI
22nd Sep 2026276 PMAQI
22nd Sep 2026297 PMAQI
22nd Sep 2026318 PMAQI
22nd Sep 2026319 PMAQI
22nd Sep 20263110 PMAQI
22nd Sep 20262911 PMAQI
23rd Sep 20262912 AMAQI
23rd Sep 2026271 AMAQI
23rd Sep 2026272 AMAQI
23rd Sep 2026283 AMAQI
23rd Sep 2026334 AMAQI
23rd Sep 2026385 AMAQI
23rd Sep 2026326 AMAQI

21°C20/22°C

23rd Sep 2026277 AMAQI
23rd Sep 2026278 AMAQI
23rd Sep 2026299 AMAQI
23rd Sep 20262710 AMAQI
23rd Sep 20262811 AMAQI
23rd Sep 20262912 PMAQI
23rd Sep 2026271 PMAQI
23rd Sep 2026292 PMAQI
23rd Sep 2026333 PMAQI
23rd Sep 2026334 PMAQI
23rd Sep 2026565 PMAQI
23rd Sep 2026516 PMAQI
23rd Sep 2026537 PMAQI
23rd Sep 2026508 PMAQI
23rd Sep 2026279 PMAQI
23rd Sep 20262110 PMAQI
23rd Sep 20262111 PMAQI
24th Sep 20262512 AMAQI
24th Sep 2026251 AMAQI
24th Sep 2026252 AMAQI
24th Sep 2026293 AMAQI
24th Sep 2026294 AMAQI
24th Sep 2026275 AMAQI
24th Sep 2026316 AMAQI

20°C19/22°C

24th Sep 2026297 AMAQI
24th Sep 2026218 AMAQI
24th Sep 2026319 AMAQI
24th Sep 20262910 AMAQI
24th Sep 20262711 AMAQI
24th Sep 20262112 PMAQI
24th Sep 2026231 PMAQI
24th Sep 2026232 PMAQI
24th Sep 2026213 PMAQI
24th Sep 2026214 PMAQI
24th Sep 2026215 PMAQI
24th Sep 2026386 PMAQI
24th Sep 2026307 PMAQI
24th Sep 2026428 PMAQI
24th Sep 2026219 PMAQI
24th Sep 20262110 PMAQI
24th Sep 20262511 PMAQI
25th Sep 20262512 AMAQI
25th Sep 2026231 AMAQI
25th Sep 2026252 AMAQI
25th Sep 2026253 AMAQI
25th Sep 2026274 AMAQI
25th Sep 2026315 AMAQI
25th Sep 2026336 AMAQI

20°C19/22°C

25th Sep 2026237 AMAQI
25th Sep 2026238 AMAQI
25th Sep 2026279 AMAQI
25th Sep 20262910 AMAQI
25th Sep 20262911 AMAQI
25th Sep 20262912 PMAQI
25th Sep 2026291 PMAQI
25th Sep 2026292 PMAQI
25th Sep 2026293 PMAQI
25th Sep 2026254 PMAQI
25th Sep 2026275 PMAQI
25th Sep 2026256 PMAQI
25th Sep 2026257 PMAQI
25th Sep 2026278 PMAQI
25th Sep 2026279 PMAQI
25th Sep 20262510 PMAQI
25th Sep 20262511 PMAQI
26th Sep 20262512 AMAQI
26th Sep 2026271 AMAQI
26th Sep 2026292 AMAQI
26th Sep 2026293 AMAQI
26th Sep 2026384 AMAQI
26th Sep 2026315 AMAQI
26th Sep 2026496 AMAQI

18°C17/20°C

26th Sep 2026347 AMAQI
26th Sep 2026258 AMAQI
26th Sep 2026409 AMAQI
26th Sep 20262510 AMAQI
26th Sep 20262511 AMAQI
26th Sep 20262912 PMAQI
26th Sep 2026381 PMAQI
26th Sep 2026332 PMAQI
26th Sep 2026333 PMAQI
26th Sep 2026334 PMAQI
26th Sep 2026275 PMAQI
26th Sep 2026336 PMAQI
26th Sep 2026277 PMAQI
26th Sep 2026248 PMAQI
26th Sep 2026249 PMAQI
26th Sep 20263110 PMAQI
26th Sep 20262711 PMAQI
27th Sep 20262312 AMAQI
27th Sep 2026211 AMAQI
27th Sep 2026222 AMAQI
27th Sep 2026223 AMAQI
27th Sep 2026214 AMAQI
27th Sep 2026225 AMAQI
27th Sep 2026226 AMAQI

19°C17/22°C

27th Sep 2026227 AMAQI
27th Sep 2026218 AMAQI
27th Sep 2026219 AMAQI
27th Sep 20262110 AMAQI
27th Sep 20262911 AMAQI
27th Sep 20262712 PMAQI
27th Sep 2026291 PMAQI
27th Sep 2026272 PMAQI
27th Sep 2026293 PMAQI
27th Sep 2026294 PMAQI
27th Sep 2026295 PMAQI
27th Sep 2026316 PMAQI
27th Sep 2026347 PMAQI
27th Sep 2026388 PMAQI
27th Sep 2026339 PMAQI
27th Sep 20263110 PMAQI
27th Sep 20262711 PMAQI
28th Sep 20262512 AMAQI
28th Sep 2026271 AMAQI
28th Sep 2026292 AMAQI
28th Sep 2026253 AMAQI
28th Sep 2026254 AMAQI
28th Sep 2026295 AMAQI
28th Sep 2026296 AMAQI

20°C18/22°C

28th Sep 2026297 AMAQI
28th Sep 2026298 AMAQI
28th Sep 2026279 AMAQI
28th Sep 20262510 AMAQI
28th Sep 20262111 AMAQI
28th Sep 20262112 PMAQI
28th Sep 2026211 PMAQI
28th Sep 2026212 PMAQI
28th Sep 2026213 PMAQI
28th Sep 2026214 PMAQI
28th Sep 2026225 PMAQI
28th Sep 2026266 PMAQI
28th Sep 2026267 PMAQI
28th Sep 2026248 PMAQI
28th Sep 2026229 PMAQI
28th Sep 20262510 PMAQI
28th Sep 20262411 PMAQI
29th Sep 20262212 AMAQI
29th Sep 2026241 AMAQI
29th Sep 2026252 AMAQI
29th Sep 2026283 AMAQI
29th Sep 2026284 AMAQI
29th Sep 2026265 AMAQI
29th Sep 2026286 AMAQI

20°C19/22°C

29th Sep 2026267 AMAQI
7 AM
29th Sep 2026268 AMAQI
29th Sep 2026279 AMAQI
29th Sep 20262910 AMAQI
29th Sep 20262811 AMAQI
29th Sep 20262812 PMAQI
29th Sep 2026261 PMAQI
1 PM
29th Sep 2026302 PMAQI
29th Sep 2026283 PMAQI
29th Sep 2026234 PMAQI
29th Sep 2026305 PMAQI
29th Sep 2026266 PMAQI
29th Sep 2026287 PMAQI
7 PM
29th Sep 2026278 PMAQI
29th Sep 2026299 PMAQI
29th Sep 20262610 PMAQI
29th Sep 20262711 PMAQI
1 AM
6 AM

20°C20/21°C

Day time
Avg. Highest Time
7 AM - 9 AM

31AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
10 AM

29AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 9 AM (Avg. 31), while the lowest AQI was between 10 AM to 10 AM (Avg. 29).
Night time
Avg. Highest Time
6 AM - 8 PM

30AQI

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

27AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 PM (Avg. 30), while the lowest AQI was between 12 AM to 1 AM (Avg. 27).

2026 Days Vs Air Quality

Cacem, Lisboa, Portugal

2026

96%

257

4%

11

Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)

Good
257 Days
Moderate
11 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 96%

Health Risk Level:

Very Low

In 2026, 96% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Cacem, Lisboa, Portugal

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
46AQI (US)
2nd January 2026
22AQI (US)
3rd January 2026
19AQI (US)
4th January 2026
24AQI (US)
5th January 2026
21AQI (US)
6th January 2026
23AQI (US)
7th January 2026
26AQI (US)
8th January 2026
34AQI (US)
9th January 2026
20AQI (US)
10th January 2026
27AQI (US)
11th January 2026
36AQI (US)
12th January 2026
20AQI (US)
13th January 2026
12AQI (US)
14th January 2026
20AQI (US)
15th January 2026
24AQI (US)
16th January 2026
26AQI (US)
17th January 2026
24AQI (US)
18th January 2026
33AQI (US)
19th January 2026
29AQI (US)
20th January 2026
26AQI (US)
21st January 2026
27AQI (US)
22nd January 2026
36AQI (US)
23rd January 2026
51AQI (US)
24th January 2026
46AQI (US)
25th January 2026
53AQI (US)
26th January 2026
49AQI (US)
27th January 2026
40AQI (US)
28th January 2026
42AQI (US)
29th January 2026
48AQI (US)
30th January 2026
64AQI (US)
31st January 2026
48AQI (US)
1st February 2026
49AQI (US)
2nd February 2026
52AQI (US)
3rd February 2026
51AQI (US)
4th February 2026
46AQI (US)
5th February 2026
52AQI (US)
6th February 2026
47AQI (US)
7th February 2026
43AQI (US)
8th February 2026
47AQI (US)
9th February 2026
51AQI (US)
10th February 2026
31AQI (US)
11th February 2026
25AQI (US)
12th February 2026
44AQI (US)
13th February 2026
14AQI (US)
14th February 2026
37AQI (US)
15th February 2026
35AQI (US)
16th February 2026
29AQI (US)
17th February 2026
39AQI (US)
18th February 2026
37AQI (US)
19th February 2026
38AQI (US)
20th February 2026
31AQI (US)
21st February 2026
44AQI (US)
22nd February 2026
44AQI (US)
23rd February 2026
29AQI (US)
24th February 2026
63AQI (US)
25th February 2026
46AQI (US)
26th February 2026
52AQI (US)
27th February 2026
13AQI (US)
28th February 2026
12AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
45AQI (US)
3rd March 2026
47AQI (US)
4th March 2026
55AQI (US)
5th March 2026
34AQI (US)
6th March 2026
15AQI (US)
7th March 2026
35AQI (US)
8th March 2026
34AQI (US)
9th March 2026
37AQI (US)
10th March 2026
30AQI (US)
11th March 2026
43AQI (US)
12th March 2026
42AQI (US)
13th March 2026
43AQI (US)
14th March 2026
34AQI (US)
15th March 2026
29AQI (US)
16th March 2026
38AQI (US)
17th March 2026
37AQI (US)
18th March 2026
29AQI (US)
19th March 2026
26AQI (US)
20th March 2026
33AQI (US)
21st March 2026
36AQI (US)
22nd March 2026
35AQI (US)
23rd March 2026
42AQI (US)
24th March 2026
36AQI (US)
25th March 2026
37AQI (US)
26th March 2026
24AQI (US)
27th March 2026
19AQI (US)
28th March 2026
26AQI (US)
29th March 2026
24AQI (US)
30th March 2026
22AQI (US)
31st March 2026
27AQI (US)
1st April 2026
29AQI (US)
2nd April 2026
29AQI (US)
3rd April 2026
27AQI (US)
4th April 2026
27AQI (US)
5th April 2026
42AQI (US)
6th April 2026
18AQI (US)
7th April 2026
24AQI (US)
8th April 2026
34AQI (US)
9th April 2026
30AQI (US)
10th April 2026
65AQI (US)
11th April 2026
17AQI (US)
12th April 2026
10AQI (US)
13th April 2026
26AQI (US)
14th April 2026
23AQI (US)
15th April 2026
29AQI (US)
16th April 2026
28AQI (US)
17th April 2026
18th April 2026
29AQI (US)
19th April 2026
43AQI (US)
20th April 2026
19AQI (US)
21st April 2026
25AQI (US)
22nd April 2026
23rd April 2026
22AQI (US)
24th April 2026
19AQI (US)
25th April 2026
24AQI (US)
26th April 2026
27AQI (US)
27th April 2026
29AQI (US)
28th April 2026
27AQI (US)
29th April 2026
22AQI (US)
30th April 2026
22AQI (US)
1st May 2026
26AQI (US)
2nd May 2026
20AQI (US)
3rd May 2026
18AQI (US)
4th May 2026
30AQI (US)
5th May 2026
37AQI (US)
6th May 2026
33AQI (US)
7th May 2026
28AQI (US)
8th May 2026
22AQI (US)
9th May 2026
10th May 2026
27AQI (US)
11th May 2026
25AQI (US)
12th May 2026
31AQI (US)
13th May 2026
28AQI (US)
14th May 2026
26AQI (US)
15th May 2026
34AQI (US)
16th May 2026
35AQI (US)
17th May 2026
36AQI (US)
18th May 2026
37AQI (US)
19th May 2026
37AQI (US)
20th May 2026
36AQI (US)
21st May 2026
38AQI (US)
22nd May 2026
43AQI (US)
23rd May 2026
40AQI (US)
24th May 2026
45AQI (US)
25th May 2026
37AQI (US)
26th May 2026
29AQI (US)
27th May 2026
25AQI (US)
28th May 2026
25AQI (US)
29th May 2026
24AQI (US)
30th May 2026
25AQI (US)
31st May 2026
25AQI (US)
1st June 2026
23AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
19AQI (US)
5th June 2026
21AQI (US)
6th June 2026
22AQI (US)
7th June 2026
19AQI (US)
8th June 2026
22AQI (US)
9th June 2026
18AQI (US)
10th June 2026
23AQI (US)
11th June 2026
23AQI (US)
12th June 2026
24AQI (US)
13th June 2026
22AQI (US)
14th June 2026
22AQI (US)
15th June 2026
23AQI (US)
16th June 2026
24AQI (US)
17th June 2026
24AQI (US)
18th June 2026
24AQI (US)
19th June 2026
21AQI (US)
20th June 2026
18AQI (US)
21st June 2026
17AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
22AQI (US)
24th June 2026
22AQI (US)
25th June 2026
19AQI (US)
26th June 2026
19AQI (US)
27th June 2026
24AQI (US)
28th June 2026
21AQI (US)
29th June 2026
19AQI (US)
30th June 2026
22AQI (US)
1st July 2026
25AQI (US)
2nd July 2026
26AQI (US)
3rd July 2026
27AQI (US)
4th July 2026
25AQI (US)
5th July 2026
24AQI (US)
6th July 2026
25AQI (US)
7th July 2026
28AQI (US)
8th July 2026
26AQI (US)
9th July 2026
25AQI (US)
10th July 2026
28AQI (US)
11th July 2026
28AQI (US)
12th July 2026
27AQI (US)
13th July 2026
27AQI (US)
14th July 2026
26AQI (US)
15th July 2026
23AQI (US)
16th July 2026
23AQI (US)
17th July 2026
29AQI (US)
18th July 2026
34AQI (US)
19th July 2026
25AQI (US)
20th July 2026
26AQI (US)
21st July 2026
23AQI (US)
22nd July 2026
27AQI (US)
23rd July 2026
34AQI (US)
24th July 2026
25AQI (US)
25th July 2026
24AQI (US)
26th July 2026
28AQI (US)
27th July 2026
26AQI (US)
28th July 2026
31AQI (US)
29th July 2026
22AQI (US)
30th July 2026
28AQI (US)
31st July 2026
26AQI (US)
1st August 2026
26AQI (US)
2nd August 2026
24AQI (US)
3rd August 2026
29AQI (US)
4th August 2026
32AQI (US)
5th August 2026
31AQI (US)
6th August 2026
30AQI (US)
7th August 2026
38AQI (US)
8th August 2026
32AQI (US)
9th August 2026
30AQI (US)
10th August 2026
37AQI (US)
11th August 2026
30AQI (US)
12th August 2026
31AQI (US)
13th August 2026
28AQI (US)
14th August 2026
28AQI (US)
15th August 2026
28AQI (US)
16th August 2026
28AQI (US)
17th August 2026
45AQI (US)
18th August 2026
47AQI (US)
19th August 2026
40AQI (US)
20th August 2026
29AQI (US)
21st August 2026
30AQI (US)
22nd August 2026
29AQI (US)
23rd August 2026
30AQI (US)
24th August 2026
28AQI (US)
25th August 2026
26AQI (US)
26th August 2026
30AQI (US)
27th August 2026
34AQI (US)
28th August 2026
37AQI (US)
29th August 2026
27AQI (US)
30th August 2026
33AQI (US)
31st August 2026
29AQI (US)
1st September 2026
33AQI (US)
2nd September 2026
31AQI (US)
3rd September 2026
27AQI (US)
4th September 2026
32AQI (US)
5th September 2026
42AQI (US)
6th September 2026
34AQI (US)
7th September 2026
27AQI (US)
8th September 2026
29AQI (US)
9th September 2026
29AQI (US)
10th September 2026
28AQI (US)
11th September 2026
28AQI (US)
12th September 2026
26AQI (US)
13th September 2026
30AQI (US)
14th September 2026
28AQI (US)
15th September 2026
25AQI (US)
16th September 2026
35AQI (US)
17th September 2026
25AQI (US)
18th September 2026
33AQI (US)
19th September 2026
34AQI (US)
20th September 2026
28AQI (US)
21st September 2026
31AQI (US)
22nd September 2026
24AQI (US)
23rd September 2026
33AQI (US)
24th September 2026
26AQI (US)
25th September 2026
27AQI (US)
26th September 2026
31AQI (US)
27th September 2026
26AQI (US)
28th September 2026
25AQI (US)
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

33AQI (US)

39AQI (US)

34AQI (US)

27AQI (US)

31AQI (US)

21AQI (US)

26AQI (US)

31AQI (US)

30AQI (US)

No. of days

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

202630AQI (US)

28
3
22
6
30
1
27
1
30
30
31
31
28
257
11

Highest AQI (US) recorded in

February

39AQI (US)

Lowest AQI (US) recorded in

June

21AQI (US)

202533AQI (US)

31
28
31
30
31
27
3
30
1
26
5
29
1
18
13
29
1
24
7
334
31

Highest AQI (US) recorded in

October

43AQI (US)

Lowest AQI (US) recorded in

April

21AQI (US)

202439AQI (US)

18
13
21
5
18
3
27
3
29
2
28
2
31
30
23
4
31
26
4
28
3
310
39

Highest AQI (US) recorded in

January

48AQI (US)

Lowest AQI (US) recorded in

October

32AQI (US)

202337AQI (US)

18
6
10
2
18
1
26
29
1
25
2
31
28
3
30
24
6
25
4
19
12
283
37

Highest AQI (US) recorded in

December

48AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

202239AQI (US)

23
7
15
8
20
9
1
1
28
21
10
28
2
15
9
1
27
26
5
25
26
5
255
55
1
1

Highest AQI (US) recorded in

March

51AQI (US)

Lowest AQI (US) recorded in

August

31AQI (US)

202134AQI (US)

30
26
31
29
31
23
4
30
1
29
2
28
2
27
4
12
7
26
5
322
25

Highest AQI (US) recorded in

November

43AQI (US)

Lowest AQI (US) recorded in

January

25AQI (US)

202027AQI (US)

13
21
17
1
27
28
1
27
20
1
31
28
27
239
3

Highest AQI (US) recorded in

May

37AQI (US)

Lowest AQI (US) recorded in

November

20AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2024(Avg.)
39AQI (US)
Least Polluted Year Recorded
2020(Avg.)
27AQI (US)

Cacem's annual 2026 AQI (US) (30) shows an average percentage change of -12.4% (improved AQI (US)) compared to previous years: 2020 (27), 2021 (34), 2022 (39), 2023 (37), 2024 (39), 2025 (33).