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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil 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

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil

2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
22nd Aug 2025
76AQI
Lowest AQI recorded on
30th Aug 2024
26AQI

Same Day Analysis (17th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 35 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 16th Aug - 17th Aug 2026

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil

AQI
Day
Night
.

6 AM16th Aug 2026

5 PM

5 AM17th Aug 2026

Day time
Avg. Highest Time
4PM16th Aug

42AQI

Avg. Lowest Time
9AM16th Aug

27AQI

Night time
Avg. Highest Time
7PM16th Aug

53AQI

Avg. Lowest Time
5AM17th Aug

19AQI

In the last 24 hours,

Porto das Caixas's AQI reached its highest point of 53 at 7 PM during the Night, while the lowest point, 19, was recorded at 5 AM during the Night between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil

JulAug
19th - 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 - 17th17th
Day
Night
19th Jul 2026526 AMAQI
19th Jul 2026577 AMAQI
19th Jul 2026588 AMAQI
19th Jul 2026569 AMAQI
19th Jul 20265410 AMAQI
19th Jul 20263211 AMAQI
19th Jul 20263212 PMAQI
19th Jul 2026381 PMAQI
19th Jul 2026252 PMAQI
19th Jul 2026233 PMAQI
19th Jul 2026294 PMAQI
19th Jul 2026275 PMAQI
19th Jul 2026256 PMAQI
19th Jul 2026277 PMAQI
19th Jul 2026338 PMAQI
19th Jul 2026429 PMAQI
19th Jul 20263610 PMAQI
19th Jul 20264211 PMAQI
20th Jul 20265812 AMAQI
20th Jul 2026591 AMAQI
20th Jul 2026562 AMAQI
20th Jul 2026443 AMAQI
20th Jul 2026424 AMAQI
20th Jul 2026425 AMAQI

21°C16/30°C

20th Jul 2026386 AMAQI
20th Jul 2026297 AMAQI
20th Jul 2026388 AMAQI
20th Jul 2026369 AMAQI
20th Jul 20262510 AMAQI
20th Jul 20262511 AMAQI
20th Jul 20263212 PMAQI
20th Jul 2026321 PMAQI
20th Jul 2026212 PMAQI
20th Jul 2026273 PMAQI
20th Jul 2026294 PMAQI
20th Jul 2026465 PMAQI
20th Jul 2026256 PMAQI
20th Jul 2026297 PMAQI
20th Jul 2026318 PMAQI
20th Jul 2026279 PMAQI
20th Jul 20262710 PMAQI
20th Jul 20263211 PMAQI
21st Jul 2026421 AMAQI
21st Jul 2026482 AMAQI
21st Jul 2026553 AMAQI
21st Jul 2026424 AMAQI
21st Jul 2026315 AMAQI

22°C16/30°C

21st Jul 2026406 AMAQI
21st Jul 2026447 AMAQI
21st Jul 2026488 AMAQI
21st Jul 2026389 AMAQI
21st Jul 20264010 AMAQI
21st Jul 20264411 AMAQI
21st Jul 20264512 PMAQI
21st Jul 2026441 PMAQI
21st Jul 2026822 PMAQI
21st Jul 2026313 PMAQI
21st Jul 2026314 PMAQI
21st Jul 2026295 PMAQI
21st Jul 2026266 PMAQI
21st Jul 2026277 PMAQI
21st Jul 2026298 PMAQI
21st Jul 2026349 PMAQI
21st Jul 20264010 PMAQI
21st Jul 20263611 PMAQI
22nd Jul 20262812 AMAQI
22nd Jul 2026341 AMAQI
22nd Jul 2026622 AMAQI
22nd Jul 2026633 AMAQI
22nd Jul 2026384 AMAQI
22nd Jul 2026335 AMAQI

22°C17/31°C

22nd Jul 2026406 AMAQI
22nd Jul 2026337 AMAQI
22nd Jul 2026408 AMAQI
22nd Jul 2026599 AMAQI
22nd Jul 20266710 AMAQI
22nd Jul 20266911 AMAQI
22nd Jul 20265912 PMAQI
22nd Jul 2026511 PMAQI
22nd Jul 2026562 PMAQI
22nd Jul 2026503 PMAQI
22nd Jul 2026324 PMAQI
22nd Jul 2026485 PMAQI
22nd Jul 2026326 PMAQI
22nd Jul 2026657 PMAQI
22nd Jul 2026428 PMAQI
22nd Jul 2026279 PMAQI
22nd Jul 20262510 PMAQI
22nd Jul 20262111 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026381 AMAQI
23rd Jul 2026292 AMAQI
23rd Jul 2026293 AMAQI
23rd Jul 2026444 AMAQI
23rd Jul 2026535 AMAQI

23°C18/31°C

23rd Jul 2026296 AMAQI
23rd Jul 2026277 AMAQI
23rd Jul 2026518 AMAQI
23rd Jul 2026339 AMAQI
23rd Jul 20263810 AMAQI
23rd Jul 20263211 AMAQI
23rd Jul 20265212 PMAQI
23rd Jul 2026401 PMAQI
23rd Jul 2026312 PMAQI
23rd Jul 2026513 PMAQI
23rd Jul 2026524 PMAQI
23rd Jul 2026485 PMAQI
23rd Jul 2026546 PMAQI
23rd Jul 2026447 PMAQI
23rd Jul 2026218 PMAQI
23rd Jul 2026369 PMAQI
23rd Jul 20262110 PMAQI
23rd Jul 20263011 PMAQI
24th Jul 20262312 AMAQI
24th Jul 2026251 AMAQI
24th Jul 2026332 AMAQI
24th Jul 2026333 AMAQI
24th Jul 2026364 AMAQI
24th Jul 2026215 AMAQI

21°C17/28°C

24th Jul 2026216 AMAQI
24th Jul 2026277 AMAQI
24th Jul 2026338 AMAQI
24th Jul 2026219 AMAQI
24th Jul 20262510 AMAQI
24th Jul 20263311 AMAQI
24th Jul 20262712 PMAQI
24th Jul 2026331 PMAQI
24th Jul 2026352 PMAQI
24th Jul 2026363 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026425 PMAQI
24th Jul 2026326 PMAQI
24th Jul 2026407 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026389 PMAQI
24th Jul 20264610 PMAQI
24th Jul 20264511 PMAQI
25th Jul 20263612 AMAQI
25th Jul 2026381 AMAQI
25th Jul 2026362 AMAQI
25th Jul 2026363 AMAQI
25th Jul 2026254 AMAQI
25th Jul 2026305 AMAQI

20°C18/25°C

25th Jul 2026386 AMAQI
25th Jul 2026347 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20262310 AMAQI
25th Jul 20263311 AMAQI
25th Jul 20263812 PMAQI
25th Jul 2026211 PMAQI
25th Jul 2026322 PMAQI
25th Jul 2026443 PMAQI
25th Jul 2026364 PMAQI
25th Jul 2026365 PMAQI
25th Jul 2026236 PMAQI
25th Jul 2026317 PMAQI
25th Jul 2026258 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262710 PMAQI
25th Jul 20261811 PMAQI
26th Jul 20263012 AMAQI
26th Jul 2026271 AMAQI
26th Jul 2026342 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026404 AMAQI
26th Jul 2026365 AMAQI

20°C17/26°C

26th Jul 2026216 AMAQI
26th Jul 2026337 AMAQI
26th Jul 2026348 AMAQI
26th Jul 2026219 AMAQI
26th Jul 20262510 AMAQI
26th Jul 20262111 AMAQI
26th Jul 20263412 PMAQI
26th Jul 2026401 PMAQI
26th Jul 2026342 PMAQI
26th Jul 2026223 PMAQI
26th Jul 2026214 PMAQI
26th Jul 2026365 PMAQI
26th Jul 2026466 PMAQI
26th Jul 2026477 PMAQI
26th Jul 2026388 PMAQI
26th Jul 2026489 PMAQI
26th Jul 20264010 PMAQI
26th Jul 20265211 PMAQI
27th Jul 20264712 AMAQI
27th Jul 2026571 AMAQI
27th Jul 2026582 AMAQI
27th Jul 2026483 AMAQI
27th Jul 2026574 AMAQI
27th Jul 2026595 AMAQI

20°C16/25°C

27th Jul 2026486 AMAQI
27th Jul 2026497 AMAQI
27th Jul 2026498 AMAQI
27th Jul 2026559 AMAQI
27th Jul 20265610 AMAQI
27th Jul 20264911 AMAQI
27th Jul 20264512 PMAQI
27th Jul 2026521 PMAQI
27th Jul 2026502 PMAQI
27th Jul 2026403 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026255 PMAQI
27th Jul 2026296 PMAQI
27th Jul 2026477 PMAQI
27th Jul 2026638 PMAQI
27th Jul 2026389 PMAQI
27th Jul 20264210 PMAQI
27th Jul 20266511 PMAQI
28th Jul 20265912 AMAQI
28th Jul 2026621 AMAQI
28th Jul 2026622 AMAQI
28th Jul 2026553 AMAQI
28th Jul 2026754 AMAQI
28th Jul 2026465 AMAQI

20°C15/28°C

28th Jul 2026466 AMAQI
28th Jul 2026537 AMAQI
28th Jul 2026488 AMAQI
28th Jul 2026389 AMAQI
28th Jul 20264010 AMAQI
28th Jul 20263611 AMAQI
28th Jul 20263412 PMAQI
28th Jul 2026341 PMAQI
28th Jul 2026302 PMAQI
28th Jul 2026443 PMAQI
28th Jul 2026224 PMAQI
28th Jul 2026265 PMAQI
28th Jul 2026256 PMAQI
28th Jul 2026327 PMAQI
28th Jul 2026568 PMAQI
28th Jul 2026609 PMAQI
28th Jul 20264110 PMAQI
28th Jul 20266611 PMAQI
29th Jul 20266212 AMAQI
29th Jul 2026761 AMAQI
29th Jul 2026782 AMAQI
29th Jul 2026713 AMAQI
29th Jul 2026624 AMAQI
29th Jul 2026625 AMAQI

22°C16/31°C

29th Jul 2026626 AMAQI
29th Jul 2026687 AMAQI
29th Jul 2026648 AMAQI
29th Jul 2026659 AMAQI
29th Jul 20265410 AMAQI
29th Jul 20265111 AMAQI
29th Jul 20265012 PMAQI
29th Jul 2026401 PMAQI
29th Jul 2026362 PMAQI
29th Jul 2026313 PMAQI
29th Jul 2026294 PMAQI
29th Jul 2026285 PMAQI
29th Jul 2026306 PMAQI
29th Jul 2026277 PMAQI
29th Jul 2026448 PMAQI
29th Jul 2026449 PMAQI
29th Jul 20263210 PMAQI
29th Jul 20262111 PMAQI
30th Jul 20262512 AMAQI
30th Jul 2026251 AMAQI
30th Jul 2026292 AMAQI
30th Jul 2026333 AMAQI
30th Jul 2026514 AMAQI
30th Jul 2026425 AMAQI

24°C19/33°C

30th Jul 2026406 AMAQI
30th Jul 2026427 AMAQI
30th Jul 2026538 AMAQI
30th Jul 2026549 AMAQI
30th Jul 20263810 AMAQI
30th Jul 20262511 AMAQI
30th Jul 20262612 PMAQI
30th Jul 2026281 PMAQI
30th Jul 2026312 PMAQI
30th Jul 2026273 PMAQI
30th Jul 2026294 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026446 PMAQI
30th Jul 2026447 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026559 PMAQI
30th Jul 20264410 PMAQI
30th Jul 20262511 PMAQI
31st Jul 20262112 AMAQI
31st Jul 2026231 AMAQI
31st Jul 2026272 AMAQI
31st Jul 2026253 AMAQI
31st Jul 2026254 AMAQI
31st Jul 2026345 AMAQI

21°C18/27°C

31st Jul 2026256 AMAQI
31st Jul 2026237 AMAQI
31st Jul 2026368 AMAQI
31st Jul 2026539 AMAQI
31st Jul 20263810 AMAQI
31st Jul 20263811 AMAQI
31st Jul 20263812 PMAQI
31st Jul 2026341 PMAQI
31st Jul 2026272 PMAQI
31st Jul 2026253 PMAQI
31st Jul 2026234 PMAQI
31st Jul 2026275 PMAQI
31st Jul 2026226 PMAQI
31st Jul 2026457 PMAQI
31st Jul 2026528 PMAQI
31st Jul 2026489 PMAQI
31st Jul 20262910 PMAQI
31st Jul 20263311 PMAQI
1st Aug 20263112 AMAQI
1st Aug 2026421 AMAQI
1st Aug 2026542 AMAQI
1st Aug 2026533 AMAQI
1st Aug 2026294 AMAQI
1st Aug 2026315 AMAQI

21°C16/26°C

1st Aug 2026406 AMAQI
1st Aug 2026557 AMAQI
1st Aug 2026528 AMAQI
1st Aug 2026499 AMAQI
1st Aug 20263410 AMAQI
1st Aug 20264411 AMAQI
1st Aug 20264612 PMAQI
1st Aug 2026381 PMAQI
1st Aug 2026312 PMAQI
1st Aug 2026343 PMAQI
1st Aug 2026294 PMAQI
1st Aug 2026295 PMAQI
1st Aug 2026426 PMAQI
1st Aug 2026647 PMAQI
1st Aug 2026608 PMAQI
1st Aug 2026499 PMAQI
1st Aug 20266510 PMAQI
1st Aug 20265811 PMAQI
2nd Aug 20266412 AMAQI
2nd Aug 2026691 AMAQI
2nd Aug 2026702 AMAQI
2nd Aug 2026603 AMAQI
2nd Aug 2026534 AMAQI
2nd Aug 2026545 AMAQI

20°C14/28°C

2nd Aug 2026426 AMAQI
2nd Aug 2026317 AMAQI
2nd Aug 2026448 AMAQI
2nd Aug 2026409 AMAQI
2nd Aug 20262710 AMAQI
2nd Aug 20262611 AMAQI
2nd Aug 20263012 PMAQI
2nd Aug 2026331 PMAQI
2nd Aug 2026302 PMAQI
2nd Aug 2026403 PMAQI
2nd Aug 2026264 PMAQI
2nd Aug 2026425 PMAQI
2nd Aug 2026256 PMAQI
2nd Aug 2026497 PMAQI
2nd Aug 2026648 PMAQI
2nd Aug 2026649 PMAQI
2nd Aug 20266210 PMAQI
2nd Aug 20264211 PMAQI
3rd Aug 20263312 AMAQI
3rd Aug 2026461 AMAQI
3rd Aug 2026532 AMAQI
3rd Aug 2026623 AMAQI
3rd Aug 2026524 AMAQI
3rd Aug 2026445 AMAQI

21°C15/31°C

3rd Aug 2026466 AMAQI
3rd Aug 2026407 AMAQI
3rd Aug 2026348 AMAQI
3rd Aug 2026409 AMAQI
3rd Aug 20263610 AMAQI
3rd Aug 20263811 AMAQI
3rd Aug 20264812 PMAQI
3rd Aug 2026521 PMAQI
3rd Aug 2026552 PMAQI
3rd Aug 2026563 PMAQI
3rd Aug 2026404 PMAQI
3rd Aug 2026305 PMAQI
3rd Aug 2026406 PMAQI
3rd Aug 2026427 PMAQI
3rd Aug 2026588 PMAQI
3rd Aug 2026559 PMAQI
3rd Aug 20264410 PMAQI
3rd Aug 20263811 PMAQI
4th Aug 20263612 AMAQI
4th Aug 2026421 AMAQI
4th Aug 2026532 AMAQI
4th Aug 2026533 AMAQI
4th Aug 2026524 AMAQI
4th Aug 2026565 AMAQI

21°C16/28°C

4th Aug 2026526 AMAQI
4th Aug 2026477 AMAQI
4th Aug 2026538 AMAQI
4th Aug 2026549 AMAQI
4th Aug 20266510 AMAQI
4th Aug 20266411 AMAQI
4th Aug 20266312 PMAQI
4th Aug 2026621 PMAQI
4th Aug 2026562 PMAQI
4th Aug 2026583 PMAQI
4th Aug 2026474 PMAQI
4th Aug 2026505 PMAQI
4th Aug 2026506 PMAQI
4th Aug 2026537 PMAQI
4th Aug 2026548 PMAQI
4th Aug 2026529 PMAQI
4th Aug 20263810 PMAQI
4th Aug 20266011 PMAQI
5th Aug 20266812 AMAQI
5th Aug 2026761 AMAQI
5th Aug 2026642 AMAQI
5th Aug 2026643 AMAQI
5th Aug 2026684 AMAQI
5th Aug 2026665 AMAQI

22°C16/30°C

5th Aug 2026576 AMAQI
5th Aug 2026587 AMAQI
5th Aug 2026528 AMAQI
5th Aug 2026579 AMAQI
5th Aug 20265310 AMAQI
5th Aug 20264011 AMAQI
5th Aug 20265012 PMAQI
5th Aug 2026581 PMAQI
5th Aug 2026442 PMAQI
5th Aug 2026353 PMAQI
5th Aug 2026344 PMAQI
5th Aug 2026325 PMAQI
5th Aug 2026356 PMAQI
5th Aug 2026387 PMAQI
5th Aug 2026578 PMAQI
5th Aug 2026579 PMAQI
5th Aug 20265410 PMAQI
5th Aug 20266711 PMAQI
6th Aug 20267812 AMAQI
6th Aug 2026591 AMAQI
6th Aug 2026582 AMAQI
6th Aug 2026553 AMAQI
6th Aug 2026504 AMAQI
6th Aug 2026515 AMAQI

24°C19/33°C

6th Aug 2026506 AMAQI
6th Aug 2026537 AMAQI
6th Aug 2026588 AMAQI
6th Aug 2026589 AMAQI
6th Aug 20265310 AMAQI
6th Aug 20264911 AMAQI
6th Aug 20264812 PMAQI
6th Aug 2026461 PMAQI
6th Aug 2026392 PMAQI
6th Aug 2026383 PMAQI
6th Aug 2026384 PMAQI
6th Aug 2026295 PMAQI
6th Aug 2026306 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026318 PMAQI
6th Aug 2026279 PMAQI
6th Aug 20262410 PMAQI
6th Aug 20262711 PMAQI
7th Aug 20263112 AMAQI
7th Aug 2026361 AMAQI
7th Aug 2026312 AMAQI
7th Aug 2026333 AMAQI
7th Aug 2026294 AMAQI
7th Aug 2026425 AMAQI

25°C19/34°C

7th Aug 2026386 AMAQI
7th Aug 2026337 AMAQI
7th Aug 2026338 AMAQI
7th Aug 2026369 AMAQI
7th Aug 20264010 AMAQI
7th Aug 20263211 AMAQI
7th Aug 20265312 PMAQI
7th Aug 2026321 PMAQI
7th Aug 2026672 PMAQI
7th Aug 2026363 PMAQI
7th Aug 2026344 PMAQI
7th Aug 2026385 PMAQI
7th Aug 2026516 PMAQI
7th Aug 2026567 PMAQI
7th Aug 2026558 PMAQI
7th Aug 2026389 PMAQI
7th Aug 20262910 PMAQI
7th Aug 20264611 PMAQI
8th Aug 20263312 AMAQI
8th Aug 2026361 AMAQI
8th Aug 2026312 AMAQI
8th Aug 2026313 AMAQI
8th Aug 2026384 AMAQI
8th Aug 2026255 AMAQI

25°C21/36°C

8th Aug 2026256 AMAQI
8th Aug 2026297 AMAQI
8th Aug 2026318 AMAQI
8th Aug 2026219 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20263111 AMAQI
8th Aug 20262912 PMAQI
8th Aug 2026331 PMAQI
8th Aug 2026332 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026405 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026357 PMAQI
8th Aug 2026518 PMAQI
8th Aug 2026369 PMAQI
8th Aug 20265110 PMAQI
8th Aug 20266311 PMAQI
9th Aug 20265312 AMAQI
9th Aug 2026461 AMAQI
9th Aug 2026572 AMAQI
9th Aug 2026543 AMAQI
9th Aug 2026534 AMAQI
9th Aug 2026575 AMAQI

24°C18/33°C

9th Aug 2026506 AMAQI
9th Aug 2026507 AMAQI
9th Aug 2026488 AMAQI
9th Aug 2026319 AMAQI
9th Aug 20264210 AMAQI
9th Aug 20264011 AMAQI
9th Aug 20263412 PMAQI
9th Aug 2026271 PMAQI
9th Aug 2026272 PMAQI
9th Aug 2026443 PMAQI
9th Aug 2026474 PMAQI
9th Aug 2026535 PMAQI
9th Aug 2026486 PMAQI
9th Aug 2026387 PMAQI
9th Aug 2026258 PMAQI
9th Aug 2026339 PMAQI
9th Aug 20263310 PMAQI
9th Aug 20263311 PMAQI
10th Aug 20262512 AMAQI
10th Aug 2026211 AMAQI
10th Aug 2026332 AMAQI
10th Aug 2026333 AMAQI
10th Aug 2026334 AMAQI
10th Aug 2026335 AMAQI

25°C21/34°C

10th Aug 2026336 AMAQI
10th Aug 2026337 AMAQI
10th Aug 2026338 AMAQI
10th Aug 2026339 AMAQI
10th Aug 20263310 AMAQI
10th Aug 20263311 AMAQI
10th Aug 20263312 PMAQI
10th Aug 2026291 PMAQI
10th Aug 2026332 PMAQI
10th Aug 2026293 PMAQI
10th Aug 2026334 PMAQI
10th Aug 2026335 PMAQI
10th Aug 2026296 PMAQI
10th Aug 2026337 PMAQI
10th Aug 2026238 PMAQI
10th Aug 2026279 PMAQI
10th Aug 20262910 PMAQI
10th Aug 20262911 PMAQI
11th Aug 20262912 AMAQI
11th Aug 2026291 AMAQI
11th Aug 2026272 AMAQI
11th Aug 2026293 AMAQI
11th Aug 2026294 AMAQI
11th Aug 2026295 AMAQI

20°C18/22°C

11th Aug 2026256 AMAQI
11th Aug 2026237 AMAQI
11th Aug 2026298 AMAQI
11th Aug 2026219 AMAQI
11th Aug 20263410 AMAQI
11th Aug 20262911 AMAQI
11th Aug 20262512 PMAQI
11th Aug 2026291 PMAQI
11th Aug 2026252 PMAQI
11th Aug 2026253 PMAQI
11th Aug 2026364 PMAQI
11th Aug 2026235 PMAQI
11th Aug 2026256 PMAQI
11th Aug 2026297 PMAQI
11th Aug 2026298 PMAQI
11th Aug 2026299 PMAQI
11th Aug 20262510 PMAQI
11th Aug 20262511 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026291 AMAQI
12th Aug 2026272 AMAQI
12th Aug 2026253 AMAQI
12th Aug 2026234 AMAQI
12th Aug 2026215 AMAQI

18°C17/18°C

12th Aug 2026306 AMAQI
12th Aug 2026277 AMAQI
12th Aug 2026348 AMAQI
12th Aug 2026339 AMAQI
12th Aug 20263110 AMAQI
12th Aug 20262911 AMAQI
12th Aug 20263112 PMAQI
12th Aug 2026311 PMAQI
12th Aug 2026282 PMAQI
12th Aug 2026263 PMAQI
12th Aug 2026314 PMAQI
12th Aug 2026245 PMAQI
12th Aug 2026306 PMAQI
12th Aug 2026337 PMAQI
12th Aug 2026378 PMAQI
12th Aug 2026429 PMAQI
12th Aug 20262710 PMAQI
12th Aug 20266411 PMAQI
13th Aug 20265212 AMAQI
13th Aug 2026401 AMAQI
13th Aug 2026382 AMAQI
13th Aug 2026383 AMAQI
13th Aug 2026234 AMAQI
13th Aug 2026365 AMAQI

18°C15/23°C

13th Aug 2026366 AMAQI
13th Aug 2026447 AMAQI
13th Aug 2026388 AMAQI
13th Aug 2026279 AMAQI
13th Aug 20264210 AMAQI
13th Aug 20264311 AMAQI
13th Aug 20265012 PMAQI
13th Aug 2026621 PMAQI
13th Aug 2026402 PMAQI
13th Aug 2026483 PMAQI
13th Aug 2026494 PMAQI
13th Aug 2026645 PMAQI
13th Aug 2026536 PMAQI
13th Aug 2026467 PMAQI
13th Aug 2026588 PMAQI
13th Aug 2026659 PMAQI
13th Aug 20266410 PMAQI
13th Aug 20265211 PMAQI
14th Aug 20265212 AMAQI
14th Aug 2026401 AMAQI
14th Aug 2026542 AMAQI
14th Aug 2026463 AMAQI
14th Aug 2026584 AMAQI
14th Aug 2026425 AMAQI

22°C17/31°C

14th Aug 2026386 AMAQI
14th Aug 2026447 AMAQI
14th Aug 2026488 AMAQI
14th Aug 2026609 AMAQI
14th Aug 20264410 AMAQI
14th Aug 20264011 AMAQI
14th Aug 20265312 PMAQI
14th Aug 2026541 PMAQI
14th Aug 2026362 PMAQI
14th Aug 2026293 PMAQI
14th Aug 2026234 PMAQI
14th Aug 2026295 PMAQI
14th Aug 2026296 PMAQI
14th Aug 2026427 PMAQI
14th Aug 2026388 PMAQI
14th Aug 2026299 PMAQI
14th Aug 20262110 PMAQI
14th Aug 20262711 PMAQI
15th Aug 20262512 AMAQI
15th Aug 2026251 AMAQI
15th Aug 2026312 AMAQI
15th Aug 2026253 AMAQI
15th Aug 2026404 AMAQI
15th Aug 2026445 AMAQI

22°C19/25°C

15th Aug 2026256 AMAQI
15th Aug 2026367 AMAQI
15th Aug 2026298 AMAQI
15th Aug 2026219 AMAQI
15th Aug 20264010 AMAQI
15th Aug 20264211 AMAQI
15th Aug 20265012 PMAQI
15th Aug 2026311 PMAQI
15th Aug 2026382 PMAQI
15th Aug 2026273 PMAQI
15th Aug 2026214 PMAQI
15th Aug 2026385 PMAQI
15th Aug 2026386 PMAQI
15th Aug 2026257 PMAQI
15th Aug 2026238 PMAQI
15th Aug 2026239 PMAQI
15th Aug 20262110 PMAQI
15th Aug 20264211 PMAQI
16th Aug 20264212 AMAQI
16th Aug 2026341 AMAQI
16th Aug 2026342 AMAQI
16th Aug 2026233 AMAQI
16th Aug 2026364 AMAQI
16th Aug 2026335 AMAQI

20°C18/23°C

16th Aug 2026406 AMAQI
16th Aug 2026297 AMAQI
16th Aug 2026278 AMAQI
16th Aug 2026279 AMAQI
16th Aug 20262910 AMAQI
16th Aug 20262911 AMAQI
16th Aug 20263812 PMAQI
16th Aug 2026361 PMAQI
16th Aug 2026362 PMAQI
16th Aug 2026403 PMAQI
16th Aug 2026424 PMAQI
16th Aug 2026425 PMAQI
16th Aug 2026456 PMAQI
16th Aug 2026537 PMAQI
16th Aug 2026448 PMAQI
16th Aug 2026409 PMAQI
16th Aug 20263610 PMAQI
16th Aug 20262111 PMAQI
17th Aug 20263112 AMAQI
17th Aug 2026311 AMAQI
17th Aug 2026382 AMAQI
17th Aug 2026193 AMAQI
17th Aug 2026294 AMAQI
17th Aug 2026195 AMAQI

21°C17/28°C

17th Aug 2026326 AMAQI
6 AM
17th Aug 2026327 AMAQI
17th Aug 2026258 AMAQI
17th Aug 2026259 AMAQI
17th Aug 20262710 AMAQI
17th Aug 20262411 AMAQI
11 AM
17th Aug 20262712 PMAQI
17th Aug 2026401 PMAQI
17th Aug 2026522 PMAQI
17th Aug 2026423 PMAQI
17th Aug 2026344 PMAQI
17th Aug 2026425 PMAQI
5 PM
17th Aug 2026406 PMAQI
17th Aug 2026497 PMAQI
17th Aug 2026368 PMAQI
17th Aug 2026349 PMAQI
17th Aug 20266010 PMAQI
17th Aug 20265211 PMAQI
11 PM
5 AM

21°C17/28°C

Day time
Avg. Highest Time
8 AM

42AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
4 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 8 AM (Avg. 42), while the lowest AQI was between 4 PM to 4 PM (Avg. 33).
Night time
Avg. Highest Time
2 AM

46AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
6 PM

35AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 AM to 2 AM (Avg. 46), while the lowest AQI was between 6 PM to 6 PM (Avg. 35).

2026 Days Vs Air Quality

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil

2026

81%

183

18%

41

0.8%

2

Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)

Good
183 Days
Moderate
41 Days
Poor
2 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 81%

Health Risk Level:

Low

In 2026, 81% of 229 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

Porto das Caixas, Niteroi, Rio de Janeiro, Brazil

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
57AQI (US)
2nd January 2026
54AQI (US)
3rd January 2026
46AQI (US)
4th January 2026
45AQI (US)
5th January 2026
39AQI (US)
6th January 2026
45AQI (US)
7th January 2026
55AQI (US)
8th January 2026
53AQI (US)
9th January 2026
70AQI (US)
10th January 2026
71AQI (US)
11th January 2026
72AQI (US)
12th January 2026
66AQI (US)
13th January 2026
60AQI (US)
14th January 2026
53AQI (US)
15th January 2026
56AQI (US)
16th January 2026
59AQI (US)
17th January 2026
56AQI (US)
18th January 2026
55AQI (US)
19th January 2026
52AQI (US)
20th January 2026
51AQI (US)
21st January 2026
43AQI (US)
22nd January 2026
51AQI (US)
23rd January 2026
53AQI (US)
24th January 2026
46AQI (US)
25th January 2026
50AQI (US)
26th January 2026
47AQI (US)
27th January 2026
52AQI (US)
28th January 2026
52AQI (US)
29th January 2026
46AQI (US)
30th January 2026
48AQI (US)
31st January 2026
46AQI (US)
1st February 2026
46AQI (US)
2nd February 2026
54AQI (US)
3rd February 2026
52AQI (US)
4th February 2026
52AQI (US)
5th February 2026
49AQI (US)
6th February 2026
46AQI (US)
7th February 2026
46AQI (US)
8th February 2026
49AQI (US)
9th February 2026
47AQI (US)
10th February 2026
42AQI (US)
11th February 2026
45AQI (US)
12th February 2026
46AQI (US)
13th February 2026
53AQI (US)
14th February 2026
53AQI (US)
15th February 2026
45AQI (US)
16th February 2026
49AQI (US)
17th February 2026
53AQI (US)
18th February 2026
50AQI (US)
19th February 2026
49AQI (US)
20th February 2026
50AQI (US)
21st February 2026
46AQI (US)
22nd February 2026
35AQI (US)
23rd February 2026
40AQI (US)
24th February 2026
47AQI (US)
25th February 2026
44AQI (US)
26th February 2026
39AQI (US)
27th February 2026
32AQI (US)
28th February 2026
32AQI (US)
1st March 2026
39AQI (US)
2nd March 2026
46AQI (US)
3rd March 2026
45AQI (US)
4th March 2026
47AQI (US)
5th March 2026
42AQI (US)
6th March 2026
40AQI (US)
7th March 2026
37AQI (US)
8th March 2026
35AQI (US)
9th March 2026
39AQI (US)
10th March 2026
40AQI (US)
11th March 2026
43AQI (US)
12th March 2026
42AQI (US)
13th March 2026
38AQI (US)
14th March 2026
38AQI (US)
15th March 2026
48AQI (US)
16th March 2026
44AQI (US)
17th March 2026
38AQI (US)
18th March 2026
56AQI (US)
19th March 2026
53AQI (US)
20th March 2026
44AQI (US)
21st March 2026
49AQI (US)
22nd March 2026
46AQI (US)
23rd March 2026
43AQI (US)
24th March 2026
35AQI (US)
25th March 2026
38AQI (US)
26th March 2026
40AQI (US)
27th March 2026
43AQI (US)
28th March 2026
37AQI (US)
29th March 2026
43AQI (US)
30th March 2026
50AQI (US)
31st March 2026
33AQI (US)
1st April 2026
35AQI (US)
2nd April 2026
35AQI (US)
3rd April 2026
30AQI (US)
4th April 2026
31AQI (US)
5th April 2026
35AQI (US)
6th April 2026
40AQI (US)
7th April 2026
38AQI (US)
8th April 2026
37AQI (US)
9th April 2026
30AQI (US)
10th April 2026
35AQI (US)
11th April 2026
35AQI (US)
12th April 2026
34AQI (US)
13th April 2026
43AQI (US)
14th April 2026
46AQI (US)
15th April 2026
38AQI (US)
16th April 2026
36AQI (US)
17th April 2026
18th April 2026
114AQI (US)
19th April 2026
101AQI (US)
20th April 2026
54AQI (US)
21st April 2026
36AQI (US)
22nd April 2026
23rd April 2026
37AQI (US)
24th April 2026
41AQI (US)
25th April 2026
47AQI (US)
26th April 2026
45AQI (US)
27th April 2026
36AQI (US)
28th April 2026
33AQI (US)
29th April 2026
31AQI (US)
30th April 2026
29AQI (US)
1st May 2026
33AQI (US)
2nd May 2026
34AQI (US)
3rd May 2026
25AQI (US)
4th May 2026
29AQI (US)
5th May 2026
41AQI (US)
6th May 2026
46AQI (US)
7th May 2026
42AQI (US)
8th May 2026
30AQI (US)
9th May 2026
10th May 2026
34AQI (US)
11th May 2026
42AQI (US)
12th May 2026
42AQI (US)
13th May 2026
54AQI (US)
14th May 2026
53AQI (US)
15th May 2026
61AQI (US)
16th May 2026
55AQI (US)
17th May 2026
42AQI (US)
18th May 2026
39AQI (US)
19th May 2026
48AQI (US)
20th May 2026
48AQI (US)
21st May 2026
40AQI (US)
22nd May 2026
51AQI (US)
23rd May 2026
62AQI (US)
24th May 2026
59AQI (US)
25th May 2026
75AQI (US)
26th May 2026
44AQI (US)
27th May 2026
26AQI (US)
28th May 2026
20AQI (US)
29th May 2026
32AQI (US)
30th May 2026
31AQI (US)
31st May 2026
21AQI (US)
1st June 2026
23AQI (US)
2nd June 2026
25AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
13AQI (US)
5th June 2026
17AQI (US)
6th June 2026
23AQI (US)
7th June 2026
40AQI (US)
8th June 2026
39AQI (US)
9th June 2026
44AQI (US)
10th June 2026
54AQI (US)
11th June 2026
34AQI (US)
12th June 2026
30AQI (US)
13th June 2026
24AQI (US)
14th June 2026
23AQI (US)
15th June 2026
22AQI (US)
16th June 2026
18AQI (US)
17th June 2026
25AQI (US)
18th June 2026
25AQI (US)
19th June 2026
25AQI (US)
20th June 2026
37AQI (US)
21st June 2026
27AQI (US)
22nd June 2026
32AQI (US)
23rd June 2026
35AQI (US)
24th June 2026
20AQI (US)
25th June 2026
44AQI (US)
26th June 2026
36AQI (US)
27th June 2026
28AQI (US)
28th June 2026
35AQI (US)
29th June 2026
30AQI (US)
30th June 2026
26AQI (US)
1st July 2026
26AQI (US)
2nd July 2026
45AQI (US)
3rd July 2026
42AQI (US)
4th July 2026
33AQI (US)
5th July 2026
25AQI (US)
6th July 2026
25AQI (US)
7th July 2026
45AQI (US)
8th July 2026
26AQI (US)
9th July 2026
33AQI (US)
10th July 2026
46AQI (US)
11th July 2026
51AQI (US)
12th July 2026
27AQI (US)
13th July 2026
19AQI (US)
14th July 2026
29AQI (US)
15th July 2026
27AQI (US)
16th July 2026
34AQI (US)
17th July 2026
43AQI (US)
18th July 2026
42AQI (US)
19th July 2026
42AQI (US)
20th July 2026
35AQI (US)
21st July 2026
40AQI (US)
22nd July 2026
45AQI (US)
23rd July 2026
38AQI (US)
24th July 2026
32AQI (US)
25th July 2026
32AQI (US)
26th July 2026
34AQI (US)
27th July 2026
48AQI (US)
28th July 2026
45AQI (US)
29th July 2026
49AQI (US)
30th July 2026
37AQI (US)
31st July 2026
32AQI (US)
1st August 2026
44AQI (US)
2nd August 2026
45AQI (US)
3rd August 2026
45AQI (US)
4th August 2026
53AQI (US)
5th August 2026
54AQI (US)
6th August 2026
45AQI (US)
7th August 2026
40AQI (US)
8th August 2026
33AQI (US)
9th August 2026
43AQI (US)
10th August 2026
31AQI (US)
11th August 2026
27AQI (US)
12th August 2026
31AQI (US)
13th August 2026
46AQI (US)
14th August 2026
41AQI (US)
15th August 2026
32AQI (US)
16th August 2026
36AQI (US)
17th August 2026
35AQI (US)
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

53AQI (US)

46AQI (US)

42AQI (US)

42AQI (US)

42AQI (US)

29AQI (US)

36AQI (US)

40AQI (US)

No. of days

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

202641AQI (US)

11
20
22
6
29
2
25
1
2
22
8
29
1
30
1
15
2
183
41
2

Highest AQI (US) recorded in

January

53AQI (US)

Lowest AQI (US) recorded in

June

29AQI (US)

202552AQI (US)

31
28
19
12
30
31
30
17
14
10
21
22
8
31
30
1
30
160
205

Highest AQI (US) recorded in

October

68AQI (US)

Lowest AQI (US) recorded in

May

30AQI (US)

202445AQI (US)

16
1
1
1
10
2
9
21
11
20
24
7
14
11
4
27
4
28
2
4
27
145
95
4

Highest AQI (US) recorded in

September

65AQI (US)

Lowest AQI (US) recorded in

October

25AQI (US)

202329AQI (US)

2
1
31
33
1

Highest AQI (US) recorded in

November

35AQI (US)

Lowest AQI (US) recorded in

December

28AQI (US)

202232AQI (US)

5
16
8
29

Highest AQI (US) recorded in

October

39AQI (US)

Lowest AQI (US) recorded in

December

28AQI (US)

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded
2025(Avg.)
52AQI (US)
Least Polluted Year Recorded
2023(Avg.)
29AQI (US)

Porto das Caixas's annual 2026 AQI (US) (41) shows an average percentage change of 9.8% (worsened AQI (US)) compared to previous years: 2022 (32), 2023 (29), 2024 (45), 2025 (52).