Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Moncao, Viana Do Castelo, 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+

August Air Quality Analysis

Moncao, Viana Do Castelo, Portugal

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
9th Aug 2023
61AQI
Lowest AQI recorded on
18th Aug 2024
18AQI

Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 25 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 15th Aug - 16th Aug 2026

Moncao, Viana Do Castelo, Portugal

AQI
Day
Night
.

7 AM15th Aug 2026

9 PM

6 AM16th Aug 2026

Day time
Avg. Highest Time
9PM15th Aug

29AQI

Avg. Lowest Time
12PM15th Aug

21AQI

Night time
Avg. Highest Time
10PM15th Aug

29AQI

Avg. Lowest Time
6AM16th Aug

23AQI

In the last 24 hours,

Moncao's AQI reached its highest point of 29 at 9 PM during the Day, while the lowest point, 21, was recorded at 12 PM during the Day between 15th Aug and 16th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Moncao, Viana Do Castelo, Portugal

JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026217 AMAQI
18th Jul 2026218 AMAQI
18th Jul 2026219 AMAQI
18th Jul 20262110 AMAQI
18th Jul 20262311 AMAQI
18th Jul 20262312 PMAQI
18th Jul 2026231 PMAQI
18th Jul 2026272 PMAQI
18th Jul 2026293 PMAQI
18th Jul 2026294 PMAQI
18th Jul 2026275 PMAQI
18th Jul 2026276 PMAQI
18th Jul 2026297 PMAQI
18th Jul 2026278 PMAQI
18th Jul 2026309 PMAQI
18th Jul 20263610 PMAQI
18th Jul 20264011 PMAQI
19th Jul 20263812 AMAQI
19th Jul 2026401 AMAQI
19th Jul 2026402 AMAQI
19th Jul 2026423 AMAQI
19th Jul 2026444 AMAQI
19th Jul 2026445 AMAQI
19th Jul 2026386 AMAQI

20°C15/24°C

19th Jul 2026407 AMAQI
19th Jul 2026408 AMAQI
19th Jul 2026449 AMAQI
19th Jul 20265010 AMAQI
19th Jul 20264811 AMAQI
19th Jul 20264412 PMAQI
19th Jul 2026421 PMAQI
19th Jul 2026422 PMAQI
19th Jul 2026423 PMAQI
19th Jul 2026444 PMAQI
19th Jul 2026465 PMAQI
19th Jul 2026486 PMAQI
19th Jul 2026427 PMAQI
19th Jul 2026428 PMAQI
19th Jul 2026409 PMAQI
19th Jul 20264210 PMAQI
19th Jul 20264011 PMAQI
20th Jul 20264812 AMAQI
20th Jul 2026461 AMAQI
20th Jul 2026422 AMAQI
20th Jul 2026403 AMAQI
20th Jul 2026424 AMAQI
20th Jul 2026425 AMAQI
20th Jul 2026426 AMAQI

19°C16/22°C

20th Jul 2026407 AMAQI
20th Jul 2026428 AMAQI
20th Jul 2026429 AMAQI
20th Jul 20264410 AMAQI
20th Jul 20264211 AMAQI
20th Jul 20264012 PMAQI
20th Jul 2026381 PMAQI
20th Jul 2026382 PMAQI
20th Jul 2026423 PMAQI
20th Jul 2026444 PMAQI
20th Jul 2026425 PMAQI
20th Jul 2026406 PMAQI
20th Jul 2026407 PMAQI
20th Jul 2026448 PMAQI
20th Jul 2026429 PMAQI
20th Jul 20264410 PMAQI
20th Jul 20264611 PMAQI
21st Jul 20264612 AMAQI
21st Jul 2026421 AMAQI
21st Jul 2026462 AMAQI
21st Jul 2026443 AMAQI
21st Jul 2026444 AMAQI
21st Jul 2026536 AMAQI

19°C16/22°C

21st Jul 2026517 AMAQI
21st Jul 2026508 AMAQI
21st Jul 2026519 AMAQI
21st Jul 20265010 AMAQI
21st Jul 20264811 AMAQI
21st Jul 20264612 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026422 PMAQI
21st Jul 2026463 PMAQI
21st Jul 2026484 PMAQI
21st Jul 2026485 PMAQI
21st Jul 2026466 PMAQI
21st Jul 2026387 PMAQI
21st Jul 2026518 PMAQI
21st Jul 2026509 PMAQI
21st Jul 20264010 PMAQI
21st Jul 20264011 PMAQI
22nd Jul 20264012 AMAQI
22nd Jul 2026481 AMAQI
22nd Jul 2026402 AMAQI
22nd Jul 2026363 AMAQI
22nd Jul 2026294 AMAQI
22nd Jul 2026365 AMAQI
22nd Jul 2026426 AMAQI

19°C16/23°C

22nd Jul 2026427 AMAQI
22nd Jul 2026448 AMAQI
22nd Jul 2026469 AMAQI
22nd Jul 20265110 AMAQI
22nd Jul 20264811 AMAQI
22nd Jul 20265212 PMAQI
22nd Jul 2026481 PMAQI
22nd Jul 2026422 PMAQI
22nd Jul 2026523 PMAQI
22nd Jul 2026534 PMAQI
22nd Jul 2026405 PMAQI
22nd Jul 2026316 PMAQI
22nd Jul 2026317 PMAQI
22nd Jul 2026338 PMAQI
22nd Jul 2026299 PMAQI
22nd Jul 20262910 PMAQI
22nd Jul 20262911 PMAQI
23rd Jul 20263412 AMAQI
23rd Jul 2026381 AMAQI
23rd Jul 2026382 AMAQI
23rd Jul 2026383 AMAQI
23rd Jul 2026404 AMAQI
23rd Jul 2026365 AMAQI
23rd Jul 2026366 AMAQI

19°C16/22°C

23rd Jul 2026367 AMAQI
23rd Jul 2026388 AMAQI
23rd Jul 2026339 AMAQI
23rd Jul 20263310 AMAQI
23rd Jul 20263311 AMAQI
23rd Jul 20263812 PMAQI
23rd Jul 2026321 PMAQI
23rd Jul 2026232 PMAQI
23rd Jul 2026273 PMAQI
23rd Jul 2026294 PMAQI
23rd Jul 2026265 PMAQI
23rd Jul 2026276 PMAQI
23rd Jul 2026337 PMAQI
23rd Jul 2026318 PMAQI
23rd Jul 2026299 PMAQI
23rd Jul 20262910 PMAQI
23rd Jul 20263111 PMAQI
24th Jul 20263112 AMAQI
24th Jul 2026311 AMAQI
24th Jul 2026312 AMAQI
24th Jul 2026293 AMAQI
24th Jul 2026294 AMAQI
24th Jul 2026295 AMAQI
24th Jul 2026276 AMAQI

19°C15/23°C

24th Jul 2026277 AMAQI
24th Jul 2026258 AMAQI
24th Jul 2026279 AMAQI
24th Jul 20263110 AMAQI
24th Jul 20263311 AMAQI
24th Jul 20263312 PMAQI
24th Jul 2026291 PMAQI
24th Jul 2026272 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026364 PMAQI
24th Jul 2026295 PMAQI
24th Jul 2026236 PMAQI
24th Jul 2026257 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026259 PMAQI
24th Jul 20263210 PMAQI
24th Jul 20263811 PMAQI
25th Jul 20264412 AMAQI
25th Jul 2026401 AMAQI
25th Jul 2026402 AMAQI
25th Jul 2026333 AMAQI
25th Jul 2026314 AMAQI
25th Jul 2026275 AMAQI
25th Jul 2026256 AMAQI

18°C15/21°C

25th Jul 2026277 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026279 AMAQI
25th Jul 20262310 AMAQI
25th Jul 20262311 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026211 PMAQI
25th Jul 2026232 PMAQI
25th Jul 2026233 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026425 PMAQI
25th Jul 2026406 PMAQI
25th Jul 2026407 PMAQI
25th Jul 2026388 PMAQI
25th Jul 2026389 PMAQI
25th Jul 20263810 PMAQI
25th Jul 20264411 PMAQI
26th Jul 20264812 AMAQI
26th Jul 2026381 AMAQI
26th Jul 2026272 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026274 AMAQI
26th Jul 2026255 AMAQI
26th Jul 2026256 AMAQI

18°C15/22°C

26th Jul 2026237 AMAQI
26th Jul 2026258 AMAQI
26th Jul 2026239 AMAQI
26th Jul 20262110 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262512 PMAQI
26th Jul 2026251 PMAQI
26th Jul 2026292 PMAQI
26th Jul 2026293 PMAQI
26th Jul 2026274 PMAQI
26th Jul 2026295 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026297 PMAQI
26th Jul 2026298 PMAQI
26th Jul 2026299 PMAQI
26th Jul 20262910 PMAQI
26th Jul 20262911 PMAQI
27th Jul 20262912 AMAQI
27th Jul 2026341 AMAQI
27th Jul 2026342 AMAQI
27th Jul 2026293 AMAQI
27th Jul 2026294 AMAQI
27th Jul 2026295 AMAQI
27th Jul 2026296 AMAQI

19°C13/23°C

27th Jul 2026297 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026319 AMAQI
27th Jul 20263110 AMAQI
27th Jul 20263111 AMAQI
27th Jul 20263112 PMAQI
27th Jul 2026271 PMAQI
27th Jul 2026252 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026335 PMAQI
27th Jul 2026336 PMAQI
27th Jul 2026317 PMAQI
27th Jul 2026278 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20262910 PMAQI
27th Jul 20262911 PMAQI
28th Jul 20263612 AMAQI
28th Jul 2026401 AMAQI
28th Jul 2026402 AMAQI
28th Jul 2026443 AMAQI
28th Jul 2026424 AMAQI
28th Jul 2026385 AMAQI
28th Jul 2026346 AMAQI

22°C16/28°C

28th Jul 2026317 AMAQI
28th Jul 2026448 AMAQI
28th Jul 2026549 AMAQI
28th Jul 20265010 AMAQI
28th Jul 20265411 AMAQI
28th Jul 20264912 PMAQI
28th Jul 2026421 PMAQI
28th Jul 2026312 PMAQI
28th Jul 2026313 PMAQI
28th Jul 2026294 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026276 PMAQI
28th Jul 2026297 PMAQI
28th Jul 2026318 PMAQI
28th Jul 2026279 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20262912 AMAQI
29th Jul 2026271 AMAQI
29th Jul 2026292 AMAQI
29th Jul 2026313 AMAQI
29th Jul 2026384 AMAQI
29th Jul 2026295 AMAQI
29th Jul 2026296 AMAQI

22°C17/25°C

29th Jul 2026297 AMAQI
29th Jul 2026258 AMAQI
29th Jul 2026219 AMAQI
29th Jul 20262110 AMAQI
29th Jul 20262111 AMAQI
29th Jul 20262112 PMAQI
29th Jul 2026251 PMAQI
29th Jul 2026212 PMAQI
29th Jul 2026213 PMAQI
29th Jul 2026234 PMAQI
29th Jul 2026215 PMAQI
29th Jul 2026236 PMAQI
29th Jul 2026297 PMAQI
29th Jul 2026268 PMAQI
29th Jul 2026279 PMAQI
29th Jul 20262910 PMAQI
29th Jul 20262711 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026231 AMAQI
30th Jul 2026212 AMAQI
30th Jul 2026213 AMAQI
30th Jul 2026214 AMAQI
30th Jul 2026255 AMAQI
30th Jul 2026256 AMAQI

18°C15/22°C

30th Jul 2026257 AMAQI
30th Jul 2026218 AMAQI
30th Jul 2026219 AMAQI
30th Jul 20262110 AMAQI
30th Jul 20262111 AMAQI
30th Jul 20262512 PMAQI
30th Jul 2026231 PMAQI
30th Jul 2026212 PMAQI
30th Jul 2026213 PMAQI
30th Jul 2026234 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026277 PMAQI
30th Jul 2026238 PMAQI
30th Jul 2026219 PMAQI
30th Jul 20262110 PMAQI
30th Jul 20262111 PMAQI
31st Jul 20262112 AMAQI
31st Jul 2026211 AMAQI
31st Jul 2026252 AMAQI
31st Jul 2026253 AMAQI
31st Jul 2026254 AMAQI
31st Jul 2026295 AMAQI
31st Jul 2026216 AMAQI

18°C14/21°C

31st Jul 2026217 AMAQI
31st Jul 2026278 AMAQI
31st Jul 2026219 AMAQI
31st Jul 20262110 AMAQI
31st Jul 20262111 AMAQI
31st Jul 20262112 PMAQI
31st Jul 2026211 PMAQI
31st Jul 2026212 PMAQI
31st Jul 2026233 PMAQI
31st Jul 2026324 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026256 PMAQI
31st Jul 2026217 PMAQI
31st Jul 2026258 PMAQI
31st Jul 2026259 PMAQI
31st Jul 20262310 PMAQI
31st Jul 20262511 PMAQI
1st Aug 20262712 AMAQI
1st Aug 2026311 AMAQI
1st Aug 2026212 AMAQI
1st Aug 2026293 AMAQI
1st Aug 2026274 AMAQI
1st Aug 2026255 AMAQI
1st Aug 2026236 AMAQI

19°C14/23°C

1st Aug 2026297 AMAQI
1st Aug 2026298 AMAQI
1st Aug 2026299 AMAQI
1st Aug 20262110 AMAQI
1st Aug 20263311 AMAQI
1st Aug 20263112 PMAQI
1st Aug 2026231 PMAQI
1st Aug 2026272 PMAQI
1st Aug 2026313 PMAQI
1st Aug 2026314 PMAQI
1st Aug 2026315 PMAQI
1st Aug 2026316 PMAQI
1st Aug 2026317 PMAQI
1st Aug 2026338 PMAQI
1st Aug 2026279 PMAQI
1st Aug 20262310 PMAQI
1st Aug 20262111 PMAQI
2nd Aug 20262512 AMAQI
2nd Aug 2026231 AMAQI
2nd Aug 2026302 AMAQI
2nd Aug 2026383 AMAQI
2nd Aug 2026314 AMAQI
2nd Aug 2026335 AMAQI
2nd Aug 2026296 AMAQI

20°C16/23°C

2nd Aug 2026367 AMAQI
2nd Aug 2026368 AMAQI
2nd Aug 2026369 AMAQI
2nd Aug 20263610 AMAQI
2nd Aug 20263111 AMAQI
2nd Aug 20262912 PMAQI
2nd Aug 2026291 PMAQI
2nd Aug 2026292 PMAQI
2nd Aug 2026253 PMAQI
2nd Aug 2026214 PMAQI
2nd Aug 2026215 PMAQI
2nd Aug 2026216 PMAQI
2nd Aug 2026217 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026219 PMAQI
2nd Aug 20262510 PMAQI
2nd Aug 20262511 PMAQI
3rd Aug 20262912 AMAQI
3rd Aug 2026291 AMAQI
3rd Aug 2026292 AMAQI
3rd Aug 2026293 AMAQI
3rd Aug 2026294 AMAQI
3rd Aug 2026295 AMAQI
3rd Aug 2026296 AMAQI

18°C15/21°C

3rd Aug 2026297 AMAQI
3rd Aug 2026298 AMAQI
3rd Aug 2026299 AMAQI
3rd Aug 20262910 AMAQI
3rd Aug 20262911 AMAQI
3rd Aug 20262912 PMAQI
3rd Aug 2026291 PMAQI
3rd Aug 2026292 PMAQI
3rd Aug 2026293 PMAQI
3rd Aug 2026294 PMAQI
3rd Aug 2026295 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026297 PMAQI
3rd Aug 2026278 PMAQI
3rd Aug 2026299 PMAQI
3rd Aug 20262910 PMAQI
3rd Aug 20262911 PMAQI
4th Aug 20262912 AMAQI
4th Aug 2026291 AMAQI
4th Aug 2026292 AMAQI
4th Aug 2026293 AMAQI
4th Aug 2026294 AMAQI
4th Aug 2026295 AMAQI
4th Aug 2026256 AMAQI

19°C15/23°C

4th Aug 2026217 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026219 AMAQI
4th Aug 20262910 AMAQI
4th Aug 20262911 AMAQI
4th Aug 20263312 PMAQI
4th Aug 2026331 PMAQI
4th Aug 2026332 PMAQI
4th Aug 2026333 PMAQI
4th Aug 2026334 PMAQI
4th Aug 2026335 PMAQI
4th Aug 2026296 PMAQI
4th Aug 2026317 PMAQI
4th Aug 2026338 PMAQI
4th Aug 2026319 PMAQI
4th Aug 20262310 PMAQI
4th Aug 20262511 PMAQI
5th Aug 20262912 AMAQI
5th Aug 2026291 AMAQI
5th Aug 2026292 AMAQI
5th Aug 2026293 AMAQI
5th Aug 2026294 AMAQI
5th Aug 2026235 AMAQI
5th Aug 2026256 AMAQI

19°C16/22°C

5th Aug 2026207 AMAQI
5th Aug 2026238 AMAQI
5th Aug 2026259 AMAQI
5th Aug 20262910 AMAQI
5th Aug 20262911 AMAQI
5th Aug 20262912 PMAQI
5th Aug 2026291 PMAQI
5th Aug 2026252 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026294 PMAQI
5th Aug 2026295 PMAQI
5th Aug 2026296 PMAQI
5th Aug 2026297 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026299 PMAQI
5th Aug 20262910 PMAQI
5th Aug 20262911 PMAQI
6th Aug 20262712 AMAQI
6th Aug 2026271 AMAQI
6th Aug 2026272 AMAQI
6th Aug 2026253 AMAQI
6th Aug 2026254 AMAQI
6th Aug 2026255 AMAQI
6th Aug 2026256 AMAQI

19°C15/22°C

6th Aug 2026257 AMAQI
6th Aug 2026278 AMAQI
6th Aug 2026299 AMAQI
6th Aug 20262910 AMAQI
6th Aug 20262911 AMAQI
6th Aug 20262712 PMAQI
6th Aug 2026271 PMAQI
6th Aug 2026292 PMAQI
6th Aug 2026273 PMAQI
6th Aug 2026274 PMAQI
6th Aug 2026255 PMAQI
6th Aug 2026256 PMAQI
6th Aug 2026257 PMAQI
6th Aug 2026238 PMAQI
6th Aug 2026239 PMAQI
6th Aug 20262510 PMAQI
6th Aug 20262111 PMAQI
7th Aug 20262512 AMAQI
7th Aug 2026271 AMAQI
7th Aug 2026232 AMAQI
7th Aug 2026253 AMAQI
7th Aug 2026234 AMAQI
7th Aug 2026235 AMAQI
7th Aug 2026256 AMAQI

19°C15/23°C

7th Aug 2026297 AMAQI
7th Aug 2026258 AMAQI
7th Aug 2026279 AMAQI
7th Aug 20262510 AMAQI
7th Aug 20262111 AMAQI
7th Aug 20262512 PMAQI
7th Aug 2026291 PMAQI
7th Aug 2026342 PMAQI
7th Aug 2026383 PMAQI
7th Aug 2026384 PMAQI
7th Aug 2026275 PMAQI
7th Aug 2026216 PMAQI
7th Aug 2026237 PMAQI
7th Aug 2026258 PMAQI
7th Aug 2026259 PMAQI
7th Aug 20262110 PMAQI
7th Aug 20262311 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026251 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026213 AMAQI
8th Aug 2026214 AMAQI
8th Aug 2026235 AMAQI
8th Aug 2026276 AMAQI

20°C16/23°C

8th Aug 2026257 AMAQI
8th Aug 2026298 AMAQI
8th Aug 2026299 AMAQI
8th Aug 20262910 AMAQI
8th Aug 20262911 AMAQI
8th Aug 20262912 PMAQI
8th Aug 2026291 PMAQI
8th Aug 2026292 PMAQI
8th Aug 2026293 PMAQI
8th Aug 2026314 PMAQI
8th Aug 2026315 PMAQI
8th Aug 2026296 PMAQI
8th Aug 2026297 PMAQI
8th Aug 2026238 PMAQI
8th Aug 2026299 PMAQI
8th Aug 20262910 PMAQI
8th Aug 20262911 PMAQI
9th Aug 20262912 AMAQI
9th Aug 2026291 AMAQI
9th Aug 2026292 AMAQI
9th Aug 2026293 AMAQI
9th Aug 2026294 AMAQI
9th Aug 2026295 AMAQI
9th Aug 2026296 AMAQI

20°C17/23°C

9th Aug 2026297 AMAQI
9th Aug 2026298 AMAQI
9th Aug 2026299 AMAQI
9th Aug 20262910 AMAQI
9th Aug 20262911 AMAQI
9th Aug 20262912 PMAQI
9th Aug 2026291 PMAQI
9th Aug 2026292 PMAQI
9th Aug 2026293 PMAQI
9th Aug 2026294 PMAQI
9th Aug 2026295 PMAQI
9th Aug 2026296 PMAQI
9th Aug 2026297 PMAQI
9th Aug 2026298 PMAQI
9th Aug 2026299 PMAQI
9th Aug 20262910 PMAQI
9th Aug 20262711 PMAQI
10th Aug 20262912 AMAQI
10th Aug 2026291 AMAQI
10th Aug 2026292 AMAQI
10th Aug 2026293 AMAQI
10th Aug 2026294 AMAQI
10th Aug 2026295 AMAQI
10th Aug 2026276 AMAQI

19°C17/22°C

10th Aug 2026257 AMAQI
10th Aug 2026218 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262910 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20262512 PMAQI
10th Aug 2026251 PMAQI
10th Aug 2026272 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026254 PMAQI
10th Aug 2026255 PMAQI
10th Aug 2026296 PMAQI
10th Aug 2026277 PMAQI
10th Aug 2026278 PMAQI
10th Aug 2026259 PMAQI
10th Aug 20262910 PMAQI
10th Aug 20262911 PMAQI
11th Aug 20262512 AMAQI
11th Aug 2026311 AMAQI
11th Aug 2026292 AMAQI
11th Aug 2026293 AMAQI
11th Aug 2026294 AMAQI
11th Aug 2026295 AMAQI
11th Aug 2026296 AMAQI

19°C16/23°C

11th Aug 2026297 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026299 AMAQI
11th Aug 20262910 AMAQI
11th Aug 20263611 AMAQI
11th Aug 20263812 PMAQI
11th Aug 2026311 PMAQI
11th Aug 2026332 PMAQI
11th Aug 2026273 PMAQI
11th Aug 2026214 PMAQI
11th Aug 2026295 PMAQI
11th Aug 2026256 PMAQI
11th Aug 2026217 PMAQI
11th Aug 2026218 PMAQI
11th Aug 2026239 PMAQI
11th Aug 20262510 PMAQI
11th Aug 20262711 PMAQI
12th Aug 20262112 AMAQI
12th Aug 2026251 AMAQI
12th Aug 2026252 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026254 AMAQI
12th Aug 2026335 AMAQI
12th Aug 2026276 AMAQI

20°C17/23°C

12th Aug 2026297 AMAQI
12th Aug 2026318 AMAQI
12th Aug 2026339 AMAQI
12th Aug 20263610 AMAQI
12th Aug 20263611 AMAQI
12th Aug 20264012 PMAQI
12th Aug 2026421 PMAQI
12th Aug 2026462 PMAQI
12th Aug 2026463 PMAQI
12th Aug 2026424 PMAQI
12th Aug 2026445 PMAQI
12th Aug 2026386 PMAQI
12th Aug 2026387 PMAQI
12th Aug 2026368 PMAQI
12th Aug 2026329 PMAQI
12th Aug 20264010 PMAQI
12th Aug 20263611 PMAQI
13th Aug 20264012 AMAQI
13th Aug 2026381 AMAQI
13th Aug 2026362 AMAQI
13th Aug 2026333 AMAQI
13th Aug 2026294 AMAQI
13th Aug 2026295 AMAQI
13th Aug 2026326 AMAQI

21°C18/24°C

13th Aug 2026387 AMAQI
13th Aug 2026388 AMAQI
13th Aug 2026389 AMAQI
13th Aug 20264210 AMAQI
13th Aug 20263811 AMAQI
13th Aug 20264012 PMAQI
13th Aug 2026361 PMAQI
13th Aug 2026382 PMAQI
13th Aug 2026403 PMAQI
13th Aug 2026404 PMAQI
13th Aug 2026425 PMAQI
13th Aug 2026446 PMAQI
13th Aug 2026447 PMAQI
13th Aug 2026428 PMAQI
13th Aug 2026449 PMAQI
13th Aug 20264410 PMAQI
13th Aug 20263811 PMAQI
14th Aug 20263612 AMAQI
14th Aug 2026381 AMAQI
14th Aug 2026382 AMAQI
14th Aug 2026423 AMAQI
14th Aug 2026294 AMAQI
14th Aug 2026275 AMAQI
14th Aug 2026276 AMAQI

21°C18/25°C

14th Aug 2026277 AMAQI
14th Aug 2026298 AMAQI
14th Aug 2026449 AMAQI
14th Aug 20264010 AMAQI
14th Aug 20263811 AMAQI
14th Aug 20263112 PMAQI
14th Aug 2026331 PMAQI
14th Aug 2026462 PMAQI
14th Aug 2026443 PMAQI
14th Aug 2026404 PMAQI
14th Aug 2026385 PMAQI
14th Aug 2026386 PMAQI
14th Aug 2026427 PMAQI
14th Aug 2026388 PMAQI
14th Aug 2026389 PMAQI
14th Aug 20263810 PMAQI
14th Aug 20263611 PMAQI
15th Aug 20263312 AMAQI
15th Aug 2026271 AMAQI
15th Aug 2026292 AMAQI
15th Aug 2026293 AMAQI
15th Aug 2026254 AMAQI
15th Aug 2026275 AMAQI
15th Aug 2026256 AMAQI

22°C17/26°C

15th Aug 2026257 AMAQI
15th Aug 2026218 AMAQI
15th Aug 2026239 AMAQI
15th Aug 20262310 AMAQI
15th Aug 20262111 AMAQI
15th Aug 20262112 PMAQI
15th Aug 2026251 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026253 PMAQI
15th Aug 2026234 PMAQI
15th Aug 2026235 PMAQI
15th Aug 2026236 PMAQI
15th Aug 2026257 PMAQI
15th Aug 2026258 PMAQI
15th Aug 2026299 PMAQI
15th Aug 20262910 PMAQI
15th Aug 20262911 PMAQI
16th Aug 20262912 AMAQI
16th Aug 2026291 AMAQI
16th Aug 2026292 AMAQI
16th Aug 2026293 AMAQI
16th Aug 2026294 AMAQI
16th Aug 2026275 AMAQI
16th Aug 2026236 AMAQI

23°C18/29°C

16th Aug 2026277 AMAQI
7 AM
16th Aug 2026278 AMAQI
16th Aug 2026299 AMAQI
16th Aug 20262910 AMAQI
16th Aug 20262711 AMAQI
16th Aug 20262512 PMAQI
16th Aug 2026291 PMAQI
16th Aug 2026322 PMAQI
2 PM
16th Aug 2026303 PMAQI
16th Aug 2026324 PMAQI
16th Aug 2026235 PMAQI
16th Aug 2026236 PMAQI
16th Aug 2026237 PMAQI
16th Aug 2026218 PMAQI
16th Aug 2026239 PMAQI
9 PM
16th Aug 20262510 PMAQI
16th Aug 20262511 PMAQI
2 AM
6 AM

23°C17/28°C

Day time
Avg. Highest Time
10 AM - 12 PM

32AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
7 AM - 8 AM

30AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 12 PM (Avg. 32), while the lowest AQI was between 7 AM to 8 AM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 1 AM

32AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
5 AM - 6 AM

29AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 32), while the lowest AQI was between 5 AM to 6 AM (Avg. 29).

2026 Days Vs Air Quality

Moncao, Viana Do Castelo, Portugal

2026

94%

210

6%

14

Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)

Good
210 Days
Moderate
14 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 94%

Health Risk Level:

Very Low

In 2026, 94% of 228 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

Moncao, Viana Do Castelo, 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
50AQI (US)
2nd January 2026
17AQI (US)
3rd January 2026
27AQI (US)
4th January 2026
19AQI (US)
5th January 2026
18AQI (US)
6th January 2026
26AQI (US)
7th January 2026
35AQI (US)
8th January 2026
37AQI (US)
9th January 2026
24AQI (US)
10th January 2026
42AQI (US)
11th January 2026
26AQI (US)
12th January 2026
22AQI (US)
13th January 2026
16AQI (US)
14th January 2026
35AQI (US)
15th January 2026
29AQI (US)
16th January 2026
30AQI (US)
17th January 2026
34AQI (US)
18th January 2026
32AQI (US)
19th January 2026
38AQI (US)
20th January 2026
35AQI (US)
21st January 2026
33AQI (US)
22nd January 2026
26AQI (US)
23rd January 2026
32AQI (US)
24th January 2026
54AQI (US)
25th January 2026
59AQI (US)
26th January 2026
40AQI (US)
27th January 2026
29AQI (US)
28th January 2026
42AQI (US)
29th January 2026
50AQI (US)
30th January 2026
43AQI (US)
31st January 2026
38AQI (US)
1st February 2026
33AQI (US)
2nd February 2026
26AQI (US)
3rd February 2026
43AQI (US)
4th February 2026
52AQI (US)
5th February 2026
28AQI (US)
6th February 2026
31AQI (US)
7th February 2026
36AQI (US)
8th February 2026
40AQI (US)
9th February 2026
36AQI (US)
10th February 2026
28AQI (US)
11th February 2026
34AQI (US)
12th February 2026
46AQI (US)
13th February 2026
16AQI (US)
14th February 2026
37AQI (US)
15th February 2026
49AQI (US)
16th February 2026
32AQI (US)
17th February 2026
33AQI (US)
18th February 2026
36AQI (US)
19th February 2026
39AQI (US)
20th February 2026
31AQI (US)
21st February 2026
40AQI (US)
22nd February 2026
48AQI (US)
23rd February 2026
70AQI (US)
24th February 2026
54AQI (US)
25th February 2026
44AQI (US)
26th February 2026
36AQI (US)
27th February 2026
43AQI (US)
28th February 2026
43AQI (US)
1st March 2026
36AQI (US)
2nd March 2026
43AQI (US)
3rd March 2026
48AQI (US)
4th March 2026
71AQI (US)
5th March 2026
46AQI (US)
6th March 2026
17AQI (US)
7th March 2026
33AQI (US)
8th March 2026
28AQI (US)
9th March 2026
27AQI (US)
10th March 2026
27AQI (US)
11th March 2026
37AQI (US)
12th March 2026
31AQI (US)
13th March 2026
21AQI (US)
14th March 2026
14AQI (US)
15th March 2026
23AQI (US)
16th March 2026
32AQI (US)
17th March 2026
33AQI (US)
18th March 2026
37AQI (US)
19th March 2026
36AQI (US)
20th March 2026
49AQI (US)
21st March 2026
59AQI (US)
22nd March 2026
71AQI (US)
23rd March 2026
55AQI (US)
24th March 2026
43AQI (US)
25th March 2026
42AQI (US)
26th March 2026
14AQI (US)
27th March 2026
20AQI (US)
28th March 2026
23AQI (US)
29th March 2026
23AQI (US)
30th March 2026
22AQI (US)
31st March 2026
24AQI (US)
1st April 2026
27AQI (US)
2nd April 2026
23AQI (US)
3rd April 2026
24AQI (US)
4th April 2026
28AQI (US)
5th April 2026
31AQI (US)
6th April 2026
44AQI (US)
7th April 2026
48AQI (US)
8th April 2026
30AQI (US)
9th April 2026
29AQI (US)
10th April 2026
46AQI (US)
11th April 2026
30AQI (US)
12th April 2026
24AQI (US)
13th April 2026
29AQI (US)
14th April 2026
25AQI (US)
15th April 2026
30AQI (US)
16th April 2026
28AQI (US)
17th April 2026
18th April 2026
54AQI (US)
19th April 2026
39AQI (US)
20th April 2026
26AQI (US)
21st April 2026
41AQI (US)
22nd April 2026
23rd April 2026
27AQI (US)
24th April 2026
26AQI (US)
25th April 2026
27AQI (US)
26th April 2026
40AQI (US)
27th April 2026
34AQI (US)
28th April 2026
31AQI (US)
29th April 2026
41AQI (US)
30th April 2026
48AQI (US)
1st May 2026
44AQI (US)
2nd May 2026
30AQI (US)
3rd May 2026
33AQI (US)
4th May 2026
44AQI (US)
5th May 2026
28AQI (US)
6th May 2026
28AQI (US)
7th May 2026
25AQI (US)
8th May 2026
24AQI (US)
9th May 2026
10th May 2026
26AQI (US)
11th May 2026
25AQI (US)
12th May 2026
28AQI (US)
13th May 2026
25AQI (US)
14th May 2026
24AQI (US)
15th May 2026
30AQI (US)
16th May 2026
36AQI (US)
17th May 2026
35AQI (US)
18th May 2026
37AQI (US)
19th May 2026
38AQI (US)
20th May 2026
35AQI (US)
21st May 2026
37AQI (US)
22nd May 2026
44AQI (US)
23rd May 2026
43AQI (US)
24th May 2026
46AQI (US)
25th May 2026
38AQI (US)
26th May 2026
35AQI (US)
27th May 2026
53AQI (US)
28th May 2026
48AQI (US)
29th May 2026
28AQI (US)
30th May 2026
26AQI (US)
31st May 2026
23AQI (US)
1st June 2026
26AQI (US)
2nd June 2026
18AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
22AQI (US)
5th June 2026
20AQI (US)
6th June 2026
20AQI (US)
7th June 2026
20AQI (US)
8th June 2026
18AQI (US)
9th June 2026
18AQI (US)
10th June 2026
22AQI (US)
11th June 2026
20AQI (US)
12th June 2026
21AQI (US)
13th June 2026
25AQI (US)
14th June 2026
32AQI (US)
15th June 2026
22AQI (US)
16th June 2026
25AQI (US)
17th June 2026
23AQI (US)
18th June 2026
25AQI (US)
19th June 2026
15AQI (US)
20th June 2026
16AQI (US)
21st June 2026
19AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
37AQI (US)
24th June 2026
53AQI (US)
25th June 2026
26AQI (US)
26th June 2026
18AQI (US)
27th June 2026
25AQI (US)
28th June 2026
22AQI (US)
29th June 2026
22AQI (US)
30th June 2026
28AQI (US)
1st July 2026
21AQI (US)
2nd July 2026
18AQI (US)
3rd July 2026
16AQI (US)
4th July 2026
16AQI (US)
5th July 2026
48AQI (US)
6th July 2026
45AQI (US)
7th July 2026
51AQI (US)
8th July 2026
52AQI (US)
9th July 2026
46AQI (US)
10th July 2026
34AQI (US)
11th July 2026
31AQI (US)
12th July 2026
24AQI (US)
13th July 2026
18AQI (US)
14th July 2026
20AQI (US)
15th July 2026
15AQI (US)
16th July 2026
14AQI (US)
17th July 2026
21AQI (US)
18th July 2026
25AQI (US)
19th July 2026
43AQI (US)
20th July 2026
42AQI (US)
21st July 2026
46AQI (US)
22nd July 2026
40AQI (US)
23rd July 2026
33AQI (US)
24th July 2026
29AQI (US)
25th July 2026
32AQI (US)
26th July 2026
28AQI (US)
27th July 2026
30AQI (US)
28th July 2026
37AQI (US)
29th July 2026
26AQI (US)
30th July 2026
23AQI (US)
31st July 2026
24AQI (US)
1st August 2026
28AQI (US)
2nd August 2026
28AQI (US)
3rd August 2026
29AQI (US)
4th August 2026
29AQI (US)
5th August 2026
28AQI (US)
6th August 2026
26AQI (US)
7th August 2026
26AQI (US)
8th August 2026
27AQI (US)
9th August 2026
29AQI (US)
10th August 2026
27AQI (US)
11th August 2026
28AQI (US)
12th August 2026
34AQI (US)
13th August 2026
38AQI (US)
14th August 2026
37AQI (US)
15th August 2026
25AQI (US)
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

33AQI (US)

39AQI (US)

35AQI (US)

33AQI (US)

34AQI (US)

23AQI (US)

31AQI (US)

29AQI (US)

No. of days

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

202632AQI (US)

29
2
25
3
27
4
27
1
29
1
29
1
29
2
15
210
14

Highest AQI (US) recorded in

February

39AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202538AQI (US)

22
9
19
9
30
1
29
1
31
27
3
31
24
7
29
1
14
17
27
3
24
7
307
58

Highest AQI (US) recorded in

October

51AQI (US)

Lowest AQI (US) recorded in

September

28AQI (US)

202451AQI (US)

10
20
12
14
3
16
15
16
14
22
9
18
12
17
13
1
26
5
16
11
3
26
5
13
17
13
18
205
153
7

Highest AQI (US) recorded in

February

63AQI (US)

Lowest AQI (US) recorded in

August

39AQI (US)

202346AQI (US)

24
7
15
13
26
5
15
15
20
11
20
9
1
22
9
27
4
26
3
18
13
18
11
11
20
242
120
1

Highest AQI (US) recorded in

December

55AQI (US)

Lowest AQI (US) recorded in

August

37AQI (US)

202238AQI (US)

10
2
12
1
25
6
28
2
13
8
1
1
24
4
27
4
24
6
19
12
183
45
1

Highest AQI (US) recorded in

July

53AQI (US)

Lowest AQI (US) recorded in

August

24AQI (US)

202139AQI (US)

17
12
24
4
20
10
1
21
7
28
3
27
3
30
1
26
5
28
2
23
8
21
9
21
10
286
74
1

Highest AQI (US) recorded in

January

49AQI (US)

Lowest AQI (US) recorded in

September

31AQI (US)

202035AQI (US)

7
6
21
14
4
25
5
26
5
31
24
6
28
3
22
8
29
2
227
39

Highest AQI (US) recorded in

March

48AQI (US)

Lowest AQI (US) recorded in

August

27AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2024(Avg.)
51AQI (US)
Least Polluted Year Recorded
2026(Avg.)
32AQI (US)

Moncao's annual 2026 AQI (US) (32) shows an average percentage change of -20.9% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (39), 2022 (38), 2023 (46), 2024 (51), 2025 (38).