Country Background

UPRA, Arecibo, Puerto Rico, Puerto Rico 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

UPRA, Arecibo, Puerto Rico, Puerto Rico

2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
19th Aug 2024
62AQI
Lowest AQI recorded on
22nd Aug 2024
24AQI


Same Day Analysis (12th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2024 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 12th Aug - 13th Aug 2025

UPRA, Arecibo, Puerto Rico, Puerto Rico

AQI
Day
Night
.

6 AM12th Aug 2025

7 PM

5 AM13th Aug 2025

Day time
Avg. Highest Time
1PM12th Aug

53AQI

Avg. Lowest Time
2PM12th Aug

44AQI

Night time
Avg. Highest Time
8PM12th Aug

49AQI

Avg. Lowest Time
12AM13th Aug

37AQI

In the last 24 hours,

UPRA's AQI reached its highest point of 53 at 1 PM during the Day, while the lowest point, 37, was recorded at 12 AM during the Night between 12th Aug and 13th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

UPRA, Arecibo, Puerto Rico, Puerto Rico

JulAug
14th - 15th15th - 16th16th - 17th17th - 18th18th - 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
Day
Night
14th Jul 2025536 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025548 AMAQI
14th Jul 2025549 AMAQI
14th Jul 20255510 AMAQI
14th Jul 20255411 AMAQI
14th Jul 20254112 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025322 PMAQI
14th Jul 2025363 PMAQI
14th Jul 2025434 PMAQI
14th Jul 2025395 PMAQI
14th Jul 2025386 PMAQI
14th Jul 2025367 PMAQI
14th Jul 2025438 PMAQI
14th Jul 2025419 PMAQI
14th Jul 20254210 PMAQI
14th Jul 20254511 PMAQI
15th Jul 20254012 AMAQI
15th Jul 2025361 AMAQI
15th Jul 2025342 AMAQI
15th Jul 2025313 AMAQI
15th Jul 2025264 AMAQI
15th Jul 2025275 AMAQI

26°C23/31°C

15th Jul 2025286 AMAQI
15th Jul 2025377 AMAQI
15th Jul 2025288 AMAQI
15th Jul 2025289 AMAQI
15th Jul 20252910 AMAQI
15th Jul 20253411 AMAQI
15th Jul 20253112 PMAQI
15th Jul 2025341 PMAQI
15th Jul 2025342 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025334 PMAQI
15th Jul 2025345 PMAQI
15th Jul 2025336 PMAQI
15th Jul 2025357 PMAQI
15th Jul 2025368 PMAQI
15th Jul 2025399 PMAQI
15th Jul 20254010 PMAQI
15th Jul 20254311 PMAQI
16th Jul 20254212 AMAQI
16th Jul 2025381 AMAQI
16th Jul 2025472 AMAQI
16th Jul 2025443 AMAQI
16th Jul 2025404 AMAQI
16th Jul 2025385 AMAQI

27°C23/31°C

16th Jul 2025336 AMAQI
16th Jul 2025287 AMAQI
16th Jul 2025418 AMAQI
16th Jul 2025409 AMAQI
16th Jul 20253810 AMAQI
16th Jul 20253811 AMAQI
16th Jul 20254012 PMAQI
16th Jul 2025421 PMAQI
16th Jul 2025422 PMAQI
16th Jul 2025523 PMAQI
16th Jul 2025444 PMAQI
16th Jul 2025455 PMAQI
16th Jul 2025446 PMAQI
16th Jul 2025457 PMAQI
16th Jul 2025418 PMAQI
16th Jul 2025479 PMAQI
16th Jul 20254410 PMAQI
16th Jul 20254611 PMAQI
17th Jul 20254312 AMAQI
17th Jul 2025411 AMAQI
17th Jul 2025492 AMAQI
17th Jul 2025563 AMAQI
17th Jul 2025574 AMAQI
17th Jul 2025465 AMAQI

27°C25/32°C

17th Jul 2025516 AMAQI
17th Jul 2025457 AMAQI
17th Jul 2025378 AMAQI
17th Jul 2025409 AMAQI
17th Jul 20254110 AMAQI
17th Jul 20254111 AMAQI
17th Jul 20253412 PMAQI
17th Jul 2025371 PMAQI
17th Jul 2025352 PMAQI
17th Jul 2025403 PMAQI
17th Jul 2025424 PMAQI
17th Jul 2025385 PMAQI
17th Jul 2025406 PMAQI
17th Jul 2025407 PMAQI
17th Jul 2025488 PMAQI
17th Jul 2025489 PMAQI
17th Jul 20254810 PMAQI
17th Jul 20254611 PMAQI
18th Jul 20255012 AMAQI
18th Jul 2025431 AMAQI
18th Jul 2025422 AMAQI
18th Jul 2025353 AMAQI
18th Jul 2025384 AMAQI
18th Jul 2025465 AMAQI

28°C25/31°C

18th Jul 2025426 AMAQI
18th Jul 2025477 AMAQI
18th Jul 2025388 AMAQI
18th Jul 2025519 AMAQI
18th Jul 20254410 AMAQI
18th Jul 20254311 AMAQI
18th Jul 20254012 PMAQI
18th Jul 2025471 PMAQI
18th Jul 2025412 PMAQI
18th Jul 2025393 PMAQI
18th Jul 2025374 PMAQI
18th Jul 2025355 PMAQI
18th Jul 2025366 PMAQI
18th Jul 2025367 PMAQI
18th Jul 2025428 PMAQI
18th Jul 2025449 PMAQI
18th Jul 20253810 PMAQI
18th Jul 20253811 PMAQI
19th Jul 20254012 AMAQI
19th Jul 2025401 AMAQI
19th Jul 2025362 AMAQI
19th Jul 2025363 AMAQI
19th Jul 2025354 AMAQI
19th Jul 2025405 AMAQI

28°C26/31°C

19th Jul 2025386 AMAQI
19th Jul 2025487 AMAQI
19th Jul 2025408 AMAQI
19th Jul 2025509 AMAQI
19th Jul 20254710 AMAQI
19th Jul 20253811 AMAQI
19th Jul 20255012 PMAQI
19th Jul 2025391 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025443 PMAQI
19th Jul 2025364 PMAQI
19th Jul 2025365 PMAQI
19th Jul 2025366 PMAQI
19th Jul 2025367 PMAQI
19th Jul 2025368 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253211 PMAQI
20th Jul 20253412 AMAQI
20th Jul 2025361 AMAQI
20th Jul 2025322 AMAQI
20th Jul 2025353 AMAQI
20th Jul 2025334 AMAQI
20th Jul 2025345 AMAQI

27°C24/32°C

20th Jul 2025386 AMAQI
20th Jul 2025437 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025329 AMAQI
20th Jul 20253810 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20253612 PMAQI
20th Jul 2025221 PMAQI
20th Jul 2025392 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025324 PMAQI
20th Jul 2025315 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025337 PMAQI
20th Jul 2025368 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253910 PMAQI
20th Jul 20253911 PMAQI
21st Jul 20253812 AMAQI
21st Jul 2025441 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025413 AMAQI
21st Jul 2025414 AMAQI
21st Jul 2025445 AMAQI

27°C23/32°C

21st Jul 2025436 AMAQI
21st Jul 2025387 AMAQI
21st Jul 2025478 AMAQI
21st Jul 2025289 AMAQI
21st Jul 20253510 AMAQI
21st Jul 20253611 AMAQI
21st Jul 20254012 PMAQI
21st Jul 2025431 PMAQI
21st Jul 2025392 PMAQI
21st Jul 2025393 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025325 PMAQI
21st Jul 2025336 PMAQI
21st Jul 2025367 PMAQI
21st Jul 2025398 PMAQI
21st Jul 2025419 PMAQI
21st Jul 20253410 PMAQI
21st Jul 20253311 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025311 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025233 AMAQI
22nd Jul 2025324 AMAQI
22nd Jul 2025325 AMAQI

27°C24/32°C

22nd Jul 2025266 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025388 AMAQI
22nd Jul 2025469 AMAQI
22nd Jul 20253510 AMAQI
22nd Jul 20256011 AMAQI
22nd Jul 20255212 PMAQI
22nd Jul 2025471 PMAQI
22nd Jul 2025502 PMAQI
22nd Jul 2025503 PMAQI
22nd Jul 2025484 PMAQI
22nd Jul 2025415 PMAQI
22nd Jul 2025396 PMAQI
22nd Jul 2025367 PMAQI
22nd Jul 2025348 PMAQI
22nd Jul 2025289 PMAQI
22nd Jul 20253010 PMAQI
22nd Jul 20252911 PMAQI
23rd Jul 20253112 AMAQI
23rd Jul 2025281 AMAQI
23rd Jul 2025262 AMAQI
23rd Jul 2025263 AMAQI
23rd Jul 2025274 AMAQI
23rd Jul 2025295 AMAQI

28°C25/33°C

23rd Jul 2025346 AMAQI
23rd Jul 2025287 AMAQI
23rd Jul 2025288 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20252710 AMAQI
23rd Jul 20252611 AMAQI
23rd Jul 20253012 PMAQI
23rd Jul 2025281 PMAQI
23rd Jul 2025312 PMAQI
23rd Jul 2025323 PMAQI
23rd Jul 2025304 PMAQI
23rd Jul 2025335 PMAQI
23rd Jul 2025356 PMAQI
23rd Jul 2025447 PMAQI
23rd Jul 2025478 PMAQI
23rd Jul 2025449 PMAQI
23rd Jul 20254210 PMAQI
23rd Jul 20254611 PMAQI
24th Jul 20254312 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025322 AMAQI
24th Jul 2025283 AMAQI
24th Jul 2025294 AMAQI
24th Jul 2025365 AMAQI

28°C26/31°C

24th Jul 2025366 AMAQI
24th Jul 2025367 AMAQI
24th Jul 2025328 AMAQI
24th Jul 2025389 AMAQI
24th Jul 20253410 AMAQI
24th Jul 20253411 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025471 PMAQI
24th Jul 2025442 PMAQI
24th Jul 2025493 PMAQI
24th Jul 2025524 PMAQI
24th Jul 2025495 PMAQI
24th Jul 2025476 PMAQI
24th Jul 2025497 PMAQI
24th Jul 2025508 PMAQI
24th Jul 2025539 PMAQI
24th Jul 20255410 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20255312 AMAQI
25th Jul 2025491 AMAQI
25th Jul 2025422 AMAQI
25th Jul 2025363 AMAQI
25th Jul 2025404 AMAQI
25th Jul 2025505 AMAQI

28°C25/31°C

25th Jul 2025486 AMAQI
25th Jul 2025367 AMAQI
25th Jul 2025448 AMAQI
25th Jul 2025529 AMAQI
25th Jul 20254710 AMAQI
25th Jul 20254411 AMAQI
25th Jul 20254812 PMAQI
25th Jul 2025291 PMAQI
25th Jul 2025422 PMAQI
25th Jul 2025463 PMAQI
25th Jul 2025464 PMAQI
25th Jul 2025455 PMAQI
25th Jul 2025476 PMAQI
25th Jul 2025467 PMAQI
25th Jul 2025488 PMAQI
25th Jul 2025509 PMAQI
25th Jul 20254410 PMAQI
25th Jul 20253911 PMAQI
26th Jul 20253512 AMAQI
26th Jul 2025371 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025343 AMAQI
26th Jul 2025484 AMAQI
26th Jul 2025425 AMAQI

27°C24/31°C

26th Jul 2025446 AMAQI
26th Jul 2025387 AMAQI
26th Jul 2025448 AMAQI
26th Jul 2025439 AMAQI
26th Jul 20254610 AMAQI
26th Jul 20254711 AMAQI
26th Jul 20254212 PMAQI
26th Jul 2025461 PMAQI
26th Jul 2025452 PMAQI
26th Jul 2025483 PMAQI
26th Jul 2025484 PMAQI
26th Jul 2025485 PMAQI
26th Jul 2025516 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025458 PMAQI
26th Jul 2025459 PMAQI
26th Jul 20255010 PMAQI
26th Jul 20254611 PMAQI
27th Jul 20254812 AMAQI
27th Jul 2025431 AMAQI
27th Jul 2025492 AMAQI
27th Jul 2025283 AMAQI
27th Jul 2025364 AMAQI
27th Jul 2025335 AMAQI

28°C23/31°C

27th Jul 2025466 AMAQI
27th Jul 2025357 AMAQI
27th Jul 2025508 AMAQI
27th Jul 2025459 AMAQI
27th Jul 20255110 AMAQI
27th Jul 20254011 AMAQI
27th Jul 20255112 PMAQI
27th Jul 2025511 PMAQI
27th Jul 2025492 PMAQI
27th Jul 2025483 PMAQI
27th Jul 2025484 PMAQI
27th Jul 2025495 PMAQI
27th Jul 2025476 PMAQI
27th Jul 2025467 PMAQI
27th Jul 2025508 PMAQI
27th Jul 2025499 PMAQI
27th Jul 20254110 PMAQI
27th Jul 20254411 PMAQI
28th Jul 20253912 AMAQI
28th Jul 2025421 AMAQI
28th Jul 2025462 AMAQI
28th Jul 2025483 AMAQI
28th Jul 2025424 AMAQI
28th Jul 2025395 AMAQI

28°C25/32°C

28th Jul 2025426 AMAQI
28th Jul 2025447 AMAQI
28th Jul 2025518 AMAQI
28th Jul 2025529 AMAQI
28th Jul 20254510 AMAQI
28th Jul 20255411 AMAQI
28th Jul 20255312 PMAQI
28th Jul 2025461 PMAQI
28th Jul 2025402 PMAQI
28th Jul 2025503 PMAQI
28th Jul 2025504 PMAQI
28th Jul 2025495 PMAQI
28th Jul 2025466 PMAQI
28th Jul 2025467 PMAQI
28th Jul 2025478 PMAQI
28th Jul 2025519 PMAQI
28th Jul 20255410 PMAQI
28th Jul 20254911 PMAQI
29th Jul 20254512 AMAQI
29th Jul 2025381 AMAQI
29th Jul 2025422 AMAQI
29th Jul 2025453 AMAQI
29th Jul 2025384 AMAQI
29th Jul 2025465 AMAQI

28°C24/35°C

29th Jul 2025396 AMAQI
29th Jul 2025417 AMAQI
29th Jul 2025488 AMAQI
29th Jul 2025459 AMAQI
29th Jul 20252810 AMAQI
29th Jul 20254211 AMAQI
29th Jul 20255212 PMAQI
29th Jul 2025421 PMAQI
29th Jul 2025472 PMAQI
29th Jul 2025473 PMAQI
29th Jul 2025434 PMAQI
29th Jul 2025405 PMAQI
29th Jul 2025406 PMAQI
29th Jul 2025397 PMAQI
29th Jul 2025448 PMAQI
29th Jul 2025409 PMAQI
29th Jul 20254210 PMAQI
29th Jul 20254711 PMAQI
30th Jul 20254812 AMAQI
30th Jul 2025481 AMAQI
30th Jul 2025462 AMAQI
30th Jul 2025423 AMAQI
30th Jul 2025484 AMAQI
30th Jul 2025505 AMAQI

28°C24/33°C

30th Jul 2025496 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025468 AMAQI
30th Jul 2025539 AMAQI
30th Jul 20254110 AMAQI
30th Jul 20254411 AMAQI
30th Jul 20255112 PMAQI
30th Jul 2025461 PMAQI
30th Jul 2025382 PMAQI
30th Jul 2025423 PMAQI
30th Jul 2025414 PMAQI
30th Jul 2025415 PMAQI
30th Jul 2025416 PMAQI
30th Jul 2025417 PMAQI
30th Jul 2025418 PMAQI
30th Jul 2025419 PMAQI
30th Jul 20254110 PMAQI
30th Jul 20254011 PMAQI
31st Jul 20253812 AMAQI
31st Jul 2025381 AMAQI
31st Jul 2025362 AMAQI
31st Jul 2025343 AMAQI
31st Jul 2025404 AMAQI
31st Jul 2025325 AMAQI

27°C23/32°C

31st Jul 2025336 AMAQI
31st Jul 2025367 AMAQI
31st Jul 2025508 AMAQI
31st Jul 2025469 AMAQI
31st Jul 20254110 AMAQI
31st Jul 20254211 AMAQI
31st Jul 20254112 PMAQI
31st Jul 2025411 PMAQI
31st Jul 2025392 PMAQI
31st Jul 2025403 PMAQI
31st Jul 2025464 PMAQI
31st Jul 2025445 PMAQI
31st Jul 2025436 PMAQI
31st Jul 2025457 PMAQI
31st Jul 2025458 PMAQI
31st Jul 2025419 PMAQI
31st Jul 20254110 PMAQI
31st Jul 20254011 PMAQI
1st Aug 20253812 AMAQI
1st Aug 2025371 AMAQI
1st Aug 2025402 AMAQI
1st Aug 2025393 AMAQI
1st Aug 2025404 AMAQI
1st Aug 2025435 AMAQI

28°C24/32°C

1st Aug 2025436 AMAQI
1st Aug 2025407 AMAQI
1st Aug 2025398 AMAQI
1st Aug 2025429 AMAQI
1st Aug 20254510 AMAQI
1st Aug 20254111 AMAQI
1st Aug 20254612 PMAQI
1st Aug 2025501 PMAQI
1st Aug 2025532 PMAQI
1st Aug 2025513 PMAQI
1st Aug 2025534 PMAQI
1st Aug 2025555 PMAQI
1st Aug 2025576 PMAQI
1st Aug 2025577 PMAQI
1st Aug 2025428 PMAQI
1st Aug 2025409 PMAQI
1st Aug 20255010 PMAQI
1st Aug 20255811 PMAQI
2nd Aug 20255412 AMAQI
2nd Aug 2025531 AMAQI
2nd Aug 2025522 AMAQI
2nd Aug 2025543 AMAQI
2nd Aug 2025524 AMAQI
2nd Aug 2025525 AMAQI

28°C25/32°C

2nd Aug 2025536 AMAQI
2nd Aug 2025537 AMAQI
2nd Aug 2025528 AMAQI
2nd Aug 2025549 AMAQI
2nd Aug 20255010 AMAQI
2nd Aug 20255311 AMAQI
2nd Aug 20255312 PMAQI
2nd Aug 2025521 PMAQI
2nd Aug 2025542 PMAQI
2nd Aug 2025563 PMAQI
2nd Aug 2025614 PMAQI
2nd Aug 2025585 PMAQI
2nd Aug 2025566 PMAQI
2nd Aug 2025467 PMAQI
2nd Aug 2025508 PMAQI
2nd Aug 2025459 PMAQI
2nd Aug 20254410 PMAQI
2nd Aug 20254211 PMAQI
3rd Aug 20254212 AMAQI
3rd Aug 2025451 AMAQI
3rd Aug 2025432 AMAQI
3rd Aug 2025443 AMAQI
3rd Aug 2025414 AMAQI
3rd Aug 2025455 AMAQI

27°C25/29°C

3rd Aug 2025446 AMAQI
3rd Aug 2025417 AMAQI
3rd Aug 2025408 AMAQI
3rd Aug 2025449 AMAQI
3rd Aug 20254410 AMAQI
3rd Aug 20254511 AMAQI
3rd Aug 20254912 PMAQI
3rd Aug 2025471 PMAQI
3rd Aug 2025482 PMAQI
3rd Aug 2025523 PMAQI
3rd Aug 2025504 PMAQI
3rd Aug 2025435 PMAQI
3rd Aug 2025476 PMAQI
3rd Aug 2025467 PMAQI
3rd Aug 2025428 PMAQI
3rd Aug 2025449 PMAQI
3rd Aug 20254210 PMAQI
3rd Aug 20254611 PMAQI
4th Aug 20254612 AMAQI
4th Aug 2025381 AMAQI
4th Aug 2025342 AMAQI
4th Aug 2025293 AMAQI
4th Aug 2025344 AMAQI
4th Aug 2025385 AMAQI

28°C25/33°C

4th Aug 2025466 AMAQI
4th Aug 2025427 AMAQI
4th Aug 2025518 AMAQI
4th Aug 2025539 AMAQI
4th Aug 20255910 AMAQI
4th Aug 20255611 AMAQI
4th Aug 20255712 PMAQI
4th Aug 2025571 PMAQI
4th Aug 2025562 PMAQI
4th Aug 2025573 PMAQI
4th Aug 2025584 PMAQI
4th Aug 2025565 PMAQI
4th Aug 2025566 PMAQI
4th Aug 2025587 PMAQI
4th Aug 2025488 PMAQI
4th Aug 2025529 PMAQI
4th Aug 20255210 PMAQI
4th Aug 20255311 PMAQI
5th Aug 20254812 AMAQI
5th Aug 2025551 AMAQI
5th Aug 2025542 AMAQI
5th Aug 2025513 AMAQI
5th Aug 2025534 AMAQI
5th Aug 2025495 AMAQI

28°C24/33°C

5th Aug 2025506 AMAQI
5th Aug 2025557 AMAQI
5th Aug 2025478 AMAQI
5th Aug 2025559 AMAQI
5th Aug 20255510 AMAQI
5th Aug 20255611 AMAQI
5th Aug 20256012 PMAQI
5th Aug 2025561 PMAQI
5th Aug 2025562 PMAQI
5th Aug 2025553 PMAQI
5th Aug 2025534 PMAQI
5th Aug 2025545 PMAQI
5th Aug 2025526 PMAQI
5th Aug 2025507 PMAQI
5th Aug 2025538 PMAQI
5th Aug 2025549 PMAQI
5th Aug 20254810 PMAQI
5th Aug 20254611 PMAQI
6th Aug 20254412 AMAQI
6th Aug 2025441 AMAQI
6th Aug 2025542 AMAQI
6th Aug 2025503 AMAQI
6th Aug 2025504 AMAQI
6th Aug 2025525 AMAQI

28°C24/32°C

6th Aug 2025606 AMAQI
6th Aug 2025507 AMAQI
6th Aug 2025508 AMAQI
6th Aug 2025489 AMAQI
6th Aug 20255410 AMAQI
6th Aug 20255211 AMAQI
6th Aug 20255412 PMAQI
6th Aug 2025511 PMAQI
6th Aug 2025472 PMAQI
6th Aug 2025503 PMAQI
6th Aug 2025524 PMAQI
6th Aug 2025485 PMAQI
6th Aug 2025426 PMAQI
6th Aug 2025447 PMAQI
6th Aug 2025528 PMAQI
6th Aug 2025529 PMAQI
6th Aug 20255110 PMAQI
6th Aug 20255311 PMAQI
7th Aug 20255212 AMAQI
7th Aug 2025521 AMAQI
7th Aug 2025502 AMAQI
7th Aug 2025483 AMAQI
7th Aug 2025484 AMAQI
7th Aug 2025475 AMAQI

28°C25/32°C

7th Aug 2025466 AMAQI
7th Aug 2025457 AMAQI
7th Aug 2025528 AMAQI
7th Aug 2025519 AMAQI
7th Aug 20256010 AMAQI
7th Aug 20254611 AMAQI
7th Aug 20253012 PMAQI
7th Aug 2025501 PMAQI
7th Aug 2025432 PMAQI
7th Aug 2025483 PMAQI
7th Aug 2025404 PMAQI
7th Aug 2025405 PMAQI
7th Aug 2025446 PMAQI
7th Aug 2025497 PMAQI
7th Aug 2025408 PMAQI
7th Aug 2025419 PMAQI
7th Aug 20254610 PMAQI
7th Aug 20254011 PMAQI
8th Aug 20253512 AMAQI
8th Aug 2025341 AMAQI
8th Aug 2025342 AMAQI
8th Aug 2025383 AMAQI
8th Aug 2025454 AMAQI
8th Aug 2025485 AMAQI

28°C24/32°C

8th Aug 2025476 AMAQI
8th Aug 2025507 AMAQI
8th Aug 2025538 AMAQI
8th Aug 2025529 AMAQI
8th Aug 20255110 AMAQI
8th Aug 20255211 AMAQI
8th Aug 20255212 PMAQI
8th Aug 2025521 PMAQI
8th Aug 2025482 PMAQI
8th Aug 2025503 PMAQI
8th Aug 2025484 PMAQI
8th Aug 2025515 PMAQI
8th Aug 2025426 PMAQI
8th Aug 2025447 PMAQI
8th Aug 2025458 PMAQI
8th Aug 2025409 PMAQI
8th Aug 20253610 PMAQI
8th Aug 20253511 PMAQI
9th Aug 20254012 AMAQI
9th Aug 2025371 AMAQI
9th Aug 2025402 AMAQI
9th Aug 2025303 AMAQI
9th Aug 2025304 AMAQI
9th Aug 2025295 AMAQI

28°C25/34°C

9th Aug 2025326 AMAQI
9th Aug 2025347 AMAQI
9th Aug 2025348 AMAQI
9th Aug 2025359 AMAQI
9th Aug 20253710 AMAQI
9th Aug 20253411 AMAQI
9th Aug 20254012 PMAQI
9th Aug 2025381 PMAQI
9th Aug 2025402 PMAQI
9th Aug 2025353 PMAQI
9th Aug 2025414 PMAQI
9th Aug 2025365 PMAQI
9th Aug 2025346 PMAQI
9th Aug 2025377 PMAQI
9th Aug 2025358 PMAQI
9th Aug 2025349 PMAQI
9th Aug 20253810 PMAQI
9th Aug 20253711 PMAQI
10th Aug 20253412 AMAQI
10th Aug 2025341 AMAQI
10th Aug 2025322 AMAQI
10th Aug 2025383 AMAQI
10th Aug 2025344 AMAQI
10th Aug 2025315 AMAQI

27°C24/31°C

10th Aug 2025296 AMAQI
10th Aug 2025287 AMAQI
10th Aug 2025338 AMAQI
10th Aug 2025389 AMAQI
10th Aug 20255210 AMAQI
10th Aug 20253711 AMAQI
10th Aug 20253812 PMAQI
10th Aug 2025511 PMAQI
10th Aug 2025472 PMAQI
10th Aug 2025493 PMAQI
10th Aug 2025434 PMAQI
10th Aug 2025435 PMAQI
10th Aug 2025426 PMAQI
10th Aug 2025437 PMAQI
10th Aug 2025418 PMAQI
10th Aug 2025399 PMAQI
10th Aug 20254110 PMAQI
10th Aug 20254611 PMAQI
11th Aug 20254712 AMAQI
11th Aug 2025451 AMAQI
11th Aug 2025522 AMAQI
11th Aug 2025503 AMAQI
11th Aug 2025544 AMAQI
11th Aug 2025465 AMAQI

27°C23/32°C

11th Aug 2025466 AMAQI
11th Aug 2025527 AMAQI
11th Aug 2025548 AMAQI
11th Aug 2025549 AMAQI
11th Aug 20255210 AMAQI
11th Aug 20254211 AMAQI
11th Aug 20253912 PMAQI
11th Aug 2025461 PMAQI
11th Aug 2025402 PMAQI
11th Aug 2025333 PMAQI
11th Aug 2025384 PMAQI
11th Aug 2025365 PMAQI
11th Aug 2025376 PMAQI
11th Aug 2025397 PMAQI
11th Aug 2025428 PMAQI
11th Aug 2025459 PMAQI
11th Aug 20254910 PMAQI
11th Aug 20254811 PMAQI
12th Aug 20254212 AMAQI
12th Aug 2025401 AMAQI
12th Aug 2025412 AMAQI
12th Aug 2025463 AMAQI
12th Aug 2025474 AMAQI
12th Aug 2025425 AMAQI

28°C24/34°C

12th Aug 2025486 AMAQI
12th Aug 2025477 AMAQI
12th Aug 2025488 AMAQI
12th Aug 2025489 AMAQI
12th Aug 20254610 AMAQI
12th Aug 20254811 AMAQI
12th Aug 20254712 PMAQI
12th Aug 2025531 PMAQI
12th Aug 2025442 PMAQI
12th Aug 2025483 PMAQI
12th Aug 2025534 PMAQI
12th Aug 2025535 PMAQI
12th Aug 2025456 PMAQI
12th Aug 2025457 PMAQI
12th Aug 2025498 PMAQI
12th Aug 2025419 PMAQI
12th Aug 20253910 PMAQI
12th Aug 20254011 PMAQI
13th Aug 20253712 AMAQI
13th Aug 2025401 AMAQI
13th Aug 2025442 AMAQI
13th Aug 2025403 AMAQI
13th Aug 2025454 AMAQI
13th Aug 2025485 AMAQI

28°C25/31°C

13th Aug 2025506 AMAQI
6 AM
13th Aug 2025487 AMAQI
13th Aug 2025488 AMAQI
13th Aug 2025509 AMAQI
13th Aug 20255010 AMAQI
13th Aug 20255611 AMAQI
12 PM
7 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 PM

44AQI

14 hours / Day
420 hours / Month
Avg. Lowest Time
6 AM - 7 PM

44AQI

14 hours / Day
420 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 PM (Avg. 44), while the lowest AQI was between 6 AM to 7 PM (Avg. 44).
Night time
Avg. Highest Time
12 AM - 11 PM

42AQI

10 hours / Day
300 hours / Month
Avg. Lowest Time
12 AM - 11 PM

42AQI

10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).

2025 Days Vs Air Quality

UPRA, Arecibo, Puerto Rico, Puerto Rico

2025

91%

204

8%

19

0.4%

1

Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)

Good
204 Days
Moderate
19 Days
Poor
1 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 91%

Health Risk Level:

Very Low

In 2025, 91% of 225 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

UPRA, Arecibo, Puerto Rico, Puerto Rico

AQI levels in 2025

AQI
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.

1st January 2025
52AQI
2nd January 2025
49AQI
3rd January 2025
46AQI
4th January 2025
35AQI
5th January 2025
37AQI
6th January 2025
35AQI
7th January 2025
31AQI
8th January 2025
32AQI
9th January 2025
32AQI
10th January 2025
32AQI
11th January 2025
29AQI
12th January 2025
30AQI
13th January 2025
32AQI
14th January 2025
30AQI
15th January 2025
30AQI
16th January 2025
29AQI
17th January 2025
40AQI
18th January 2025
47AQI
19th January 2025
40AQI
20th January 2025
32AQI
21st January 2025
36AQI
22nd January 2025
30AQI
23rd January 2025
30AQI
24th January 2025
30AQI
25th January 2025
32AQI
26th January 2025
34AQI
27th January 2025
38AQI
28th January 2025
35AQI
29th January 2025
32AQI
30th January 2025
29AQI
31st January 2025
31AQI
1st February 2025
29AQI
2nd February 2025
30AQI
3rd February 2025
27AQI
4th February 2025
29AQI
5th February 2025
31AQI
6th February 2025
30AQI
7th February 2025
30AQI
8th February 2025
33AQI
9th February 2025
33AQI
10th February 2025
35AQI
11th February 2025
36AQI
12th February 2025
35AQI
13th February 2025
30AQI
14th February 2025
31AQI
15th February 2025
21AQI
16th February 2025
37AQI
17th February 2025
38AQI
18th February 2025
43AQI
19th February 2025
36AQI
20th February 2025
36AQI
21st February 2025
33AQI
22nd February 2025
32AQI
23rd February 2025
33AQI
24th February 2025
32AQI
25th February 2025
31AQI
26th February 2025
36AQI
27th February 2025
35AQI
28th February 2025
37AQI
1st March 2025
44AQI
2nd March 2025
41AQI
3rd March 2025
42AQI
4th March 2025
36AQI
5th March 2025
33AQI
6th March 2025
31AQI
7th March 2025
32AQI
8th March 2025
33AQI
9th March 2025
31AQI
10th March 2025
34AQI
11th March 2025
43AQI
12th March 2025
42AQI
13th March 2025
40AQI
14th March 2025
42AQI
15th March 2025
41AQI
16th March 2025
42AQI
17th March 2025
51AQI
18th March 2025
45AQI
19th March 2025
42AQI
20th March 2025
43AQI
21st March 2025
37AQI
22nd March 2025
42AQI
23rd March 2025
43AQI
24th March 2025
43AQI
25th March 2025
39AQI
26th March 2025
35AQI
27th March 2025
34AQI
28th March 2025
40AQI
29th March 2025
41AQI
30th March 2025
38AQI
31st March 2025
37AQI
1st April 2025
37AQI
2nd April 2025
41AQI
3rd April 2025
42AQI
4th April 2025
36AQI
5th April 2025
34AQI
6th April 2025
29AQI
7th April 2025
25AQI
8th April 2025
29AQI
9th April 2025
29AQI
10th April 2025
44AQI
11th April 2025
44AQI
12th April 2025
57AQI
13th April 2025
54AQI
14th April 2025
41AQI
15th April 2025
38AQI
16th April 2025
35AQI
17th April 2025
38AQI
18th April 2025
51AQI
19th April 2025
49AQI
20th April 2025
34AQI
21st April 2025
36AQI
22nd April 2025
25AQI
23rd April 2025
24AQI
24th April 2025
27AQI
25th April 2025
23AQI
26th April 2025
28AQI
27th April 2025
33AQI
28th April 2025
29AQI
29th April 2025
27AQI
30th April 2025
26AQI
1st May 2025
25AQI
2nd May 2025
26AQI
3rd May 2025
26AQI
4th May 2025
26AQI
5th May 2025
29AQI
6th May 2025
32AQI
7th May 2025
29AQI
8th May 2025
28AQI
9th May 2025
25AQI
10th May 2025
22AQI
11th May 2025
20AQI
12th May 2025
22AQI
13th May 2025
22AQI
14th May 2025
21AQI
15th May 2025
23AQI
16th May 2025
28AQI
17th May 2025
27AQI
18th May 2025
23AQI
19th May 2025
25AQI
20th May 2025
25AQI
21st May 2025
26AQI
22nd May 2025
24AQI
23rd May 2025
24AQI
24th May 2025
27AQI
25th May 2025
31AQI
26th May 2025
35AQI
27th May 2025
31AQI
28th May 2025
27AQI
29th May 2025
25AQI
30th May 2025
28AQI
31st May 2025
36AQI
1st June 2025
42AQI
2nd June 2025
48AQI
3rd June 2025
42AQI
4th June 2025
32AQI
5th June 2025
27AQI
6th June 2025
25AQI
7th June 2025
24AQI
8th June 2025
30AQI
9th June 2025
37AQI
10th June 2025
44AQI
11th June 2025
47AQI
12th June 2025
37AQI
13th June 2025
34AQI
14th June 2025
31AQI
15th June 2025
30AQI
16th June 2025
32AQI
17th June 2025
34AQI
18th June 2025
38AQI
19th June 2025
42AQI
20th June 2025
37AQI
21st June 2025
33AQI
22nd June 2025
34AQI
23rd June 2025
38AQI
24th June 2025
42AQI
25th June 2025
42AQI
26th June 2025
45AQI
27th June 2025
46AQI
28th June 2025
45AQI
29th June 2025
48AQI
30th June 2025
50AQI
1st July 2025
51AQI
2nd July 2025
51AQI
3rd July 2025
63AQI
4th July 2025
72AQI
5th July 2025
80AQI
6th July 2025
89AQI
7th July 2025
100AQI
8th July 2025
103AQI
9th July 2025
83AQI
10th July 2025
69AQI
11th July 2025
65AQI
12th July 2025
58AQI
13th July 2025
57AQI
14th July 2025
46AQI
15th July 2025
34AQI
16th July 2025
42AQI
17th July 2025
44AQI
18th July 2025
41AQI
19th July 2025
38AQI
20th July 2025
35AQI
21st July 2025
38AQI
22nd July 2025
36AQI
23rd July 2025
33AQI
24th July 2025
43AQI
25th July 2025
45AQI
26th July 2025
44AQI
27th July 2025
45AQI
28th July 2025
47AQI
29th July 2025
42AQI
30th July 2025
44AQI
31st July 2025
40AQI
1st August 2025
46AQI
2nd August 2025
52AQI
3rd August 2025
44AQI
4th August 2025
49AQI
5th August 2025
53AQI
6th August 2025
50AQI
7th August 2025
46AQI
8th August 2025
44AQI
9th August 2025
35AQI
10th August 2025
39AQI
11th August 2025
45AQI
12th August 2025
46AQI

35AQI

33AQI

39AQI

36AQI

26AQI

38AQI

54AQI

46AQI


No. of days

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

202538AQI

30
1
28
30
1
27
3
31
30
18
12
1
10
2
204
19
1

Highest AQI recorded in

July

54AQI


Lowest AQI recorded in

May

26AQI


202433AQI

16
1
1
1
9
3
29
1
29
2
28
1
3
12
1
30
30
1
188
10

Highest AQI recorded in

May

45AQI


Lowest AQI recorded in

January

21AQI


20233AQI

31
28
31
30
31
30
5
3
31
220

Highest AQI recorded in

November

12AQI


Lowest AQI recorded in

January

0AQI


20220AQI

3
30
30
63

Highest AQI recorded in

December

1AQI


Lowest AQI recorded in

October

0AQI


Most & Least Polluted Years Over the Last 4 Years

Most Polluted Year Recorded
2025(Avg.)
38AQI
Least Polluted Year Recorded
2022(Avg.)
0AQI


UPRA's annual 2025 AQI (38) shows an average percentage change of 3575.9% (worsened AQI) compared to previous years: 2022 (0), 2023 (3), 2024 (33).