San Juan Puerto Rico, Catano, Puerto Rico, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
July Air Quality Analysis
San Juan Puerto Rico, Catano, Puerto Rico, United States
2022
2023
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
8th Jul 2025
111AQILowest AQI recorded on
24th Jul 2022
8AQISame Day Analysis (17th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 45 of Good air quality, showing improvement over 2025, 2023 and 2022 on the same day.
Day & Night AQI Trend: 16th Jul - 17th Jul 2026
San Juan Puerto Rico, Catano, Puerto Rico, United States
AQI
Day
Night
.
5 AM16th Jul 2026
7 PM
4 AM17th Jul 2026
Day time
Avg. Highest Time
12PM16th Jul
64AQI
Avg. Lowest Time
3PM16th Jul
19AQI
Night time
Avg. Highest Time
1AM17th Jul
46AQI
Avg. Lowest Time
8PM16th Jul
27AQI
In the last 24 hours,
San Juan Puerto Rico's AQI reached its highest point of 64 at 12 PM during the Day, while the lowest point, 19, was recorded at 3 PM during the Day between 16th Jul and 17th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
San Juan Puerto Rico, Catano, Puerto Rico, United States
JunJul
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th
Day
Night
18th Jun 2026255 AMAQI
18th Jun 2026886 AMAQI
18th Jun 2026267 AMAQI
18th Jun 2026248 AMAQI
18th Jun 2026269 AMAQI
18th Jun 20262610 AMAQI
18th Jun 20262511 AMAQI
18th Jun 20262612 PMAQI
18th Jun 2026261 PMAQI
18th Jun 2026662 PMAQI
18th Jun 2026583 PMAQI
18th Jun 2026524 PMAQI
18th Jun 2026605 PMAQI
18th Jun 2026326 PMAQI
18th Jun 2026367 PMAQI
18th Jun 2026488 PMAQI
18th Jun 2026369 PMAQI
18th Jun 20265010 PMAQI
18th Jun 20265011 PMAQI
19th Jun 20269412 AMAQI
19th Jun 2026961 AMAQI
19th Jun 2026582 AMAQI
19th Jun 2026503 AMAQI
19th Jun 2026244 AMAQI
28°C24/31°C
19th Jun 2026545 AMAQI
19th Jun 2026826 AMAQI
19th Jun 2026217 AMAQI
19th Jun 2026328 AMAQI
19th Jun 2026219 AMAQI
19th Jun 20262410 AMAQI
19th Jun 20265411 AMAQI
19th Jun 20262512 PMAQI
19th Jun 2026281 PMAQI
19th Jun 2026262 PMAQI
19th Jun 2026463 PMAQI
19th Jun 2026644 PMAQI
19th Jun 2026735 PMAQI
19th Jun 2026836 PMAQI
19th Jun 2026507 PMAQI
19th Jun 2026478 PMAQI
19th Jun 20261309 PMAQI
19th Jun 20264710 PMAQI
19th Jun 20263111 PMAQI
20th Jun 20262412 AMAQI
20th Jun 2026441 AMAQI
20th Jun 2026522 AMAQI
20th Jun 2026433 AMAQI
20th Jun 2026404 AMAQI
28°C25/31°C
20th Jun 2026225 AMAQI
20th Jun 2026446 AMAQI
20th Jun 2026507 AMAQI
20th Jun 2026768 AMAQI
20th Jun 2026789 AMAQI
20th Jun 20262810 AMAQI
20th Jun 20265811 AMAQI
20th Jun 20262812 PMAQI
20th Jun 2026541 PMAQI
20th Jun 2026342 PMAQI
20th Jun 2026303 PMAQI
20th Jun 2026244 PMAQI
20th Jun 2026245 PMAQI
20th Jun 2026236 PMAQI
20th Jun 2026227 PMAQI
20th Jun 2026228 PMAQI
20th Jun 2026219 PMAQI
20th Jun 20262010 PMAQI
20th Jun 20262211 PMAQI
21st Jun 20262212 AMAQI
21st Jun 2026251 AMAQI
21st Jun 2026332 AMAQI
21st Jun 2026803 AMAQI
21st Jun 2026844 AMAQI
28°C25/31°C
21st Jun 2026465 AMAQI
21st Jun 2026196 AMAQI
21st Jun 2026457 AMAQI
21st Jun 2026368 AMAQI
21st Jun 2026349 AMAQI
21st Jun 20263810 AMAQI
21st Jun 20264411 AMAQI
21st Jun 20266212 PMAQI
21st Jun 2026461 PMAQI
21st Jun 2026522 PMAQI
21st Jun 2026213 PMAQI
21st Jun 2026204 PMAQI
21st Jun 2026255 PMAQI
21st Jun 2026256 PMAQI
21st Jun 2026257 PMAQI
21st Jun 2026298 PMAQI
21st Jun 2026279 PMAQI
21st Jun 20262910 PMAQI
21st Jun 20263211 PMAQI
22nd Jun 20266312 AMAQI
22nd Jun 2026581 AMAQI
22nd Jun 2026502 AMAQI
22nd Jun 2026213 AMAQI
22nd Jun 2026474 AMAQI
28°C25/31°C
22nd Jun 2026245 AMAQI
22nd Jun 2026206 AMAQI
22nd Jun 2026407 AMAQI
22nd Jun 2026498 AMAQI
22nd Jun 2026469 AMAQI
22nd Jun 20266410 AMAQI
22nd Jun 20264411 AMAQI
22nd Jun 20265412 PMAQI
22nd Jun 2026281 PMAQI
22nd Jun 2026492 PMAQI
22nd Jun 2026363 PMAQI
22nd Jun 2026324 PMAQI
22nd Jun 2026335 PMAQI
22nd Jun 2026276 PMAQI
22nd Jun 2026327 PMAQI
22nd Jun 2026288 PMAQI
22nd Jun 2026299 PMAQI
22nd Jun 20263210 PMAQI
22nd Jun 20262711 PMAQI
23rd Jun 20264212 AMAQI
23rd Jun 2026301 AMAQI
23rd Jun 2026322 AMAQI
23rd Jun 2026423 AMAQI
23rd Jun 2026304 AMAQI
28°C25/31°C
23rd Jun 2026315 AMAQI
23rd Jun 2026386 AMAQI
23rd Jun 2026407 AMAQI
23rd Jun 2026638 AMAQI
23rd Jun 2026509 AMAQI
23rd Jun 20263610 AMAQI
23rd Jun 20264211 AMAQI
23rd Jun 20263112 PMAQI
23rd Jun 2026381 PMAQI
23rd Jun 2026332 PMAQI
23rd Jun 2026483 PMAQI
23rd Jun 2026424 PMAQI
23rd Jun 2026515 PMAQI
23rd Jun 2026256 PMAQI
23rd Jun 2026547 PMAQI
23rd Jun 2026568 PMAQI
23rd Jun 2026469 PMAQI
23rd Jun 20264610 PMAQI
23rd Jun 20266711 PMAQI
24th Jun 20264612 AMAQI
24th Jun 2026471 AMAQI
24th Jun 2026792 AMAQI
24th Jun 2026713 AMAQI
24th Jun 2026644 AMAQI
27°C25/30°C
24th Jun 2026545 AMAQI
24th Jun 2026606 AMAQI
24th Jun 2026467 AMAQI
24th Jun 2026538 AMAQI
24th Jun 2026389 AMAQI
24th Jun 20266210 AMAQI
24th Jun 20264211 AMAQI
24th Jun 20265812 PMAQI
24th Jun 2026261 PMAQI
24th Jun 2026262 PMAQI
24th Jun 2026463 PMAQI
24th Jun 2026654 PMAQI
24th Jun 2026365 PMAQI
24th Jun 2026366 PMAQI
24th Jun 2026367 PMAQI
24th Jun 2026388 PMAQI
24th Jun 2026799 PMAQI
24th Jun 20265810 PMAQI
24th Jun 20264811 PMAQI
25th Jun 20263112 AMAQI
25th Jun 2026341 AMAQI
25th Jun 2026252 AMAQI
25th Jun 2026293 AMAQI
25th Jun 2026284 AMAQI
28°C25/31°C
25th Jun 2026235 AMAQI
25th Jun 2026216 AMAQI
25th Jun 2026247 AMAQI
25th Jun 2026348 AMAQI
25th Jun 2026249 AMAQI
25th Jun 20263510 AMAQI
25th Jun 20262611 AMAQI
25th Jun 20262812 PMAQI
25th Jun 2026271 PMAQI
25th Jun 2026232 PMAQI
25th Jun 2026283 PMAQI
25th Jun 2026214 PMAQI
25th Jun 2026225 PMAQI
25th Jun 2026226 PMAQI
25th Jun 2026227 PMAQI
25th Jun 2026288 PMAQI
25th Jun 2026449 PMAQI
25th Jun 20263410 PMAQI
25th Jun 20263211 PMAQI
26th Jun 20262612 AMAQI
26th Jun 2026261 AMAQI
26th Jun 2026242 AMAQI
26th Jun 2026243 AMAQI
26th Jun 2026224 AMAQI
28°C25/31°C
26th Jun 2026345 AMAQI
26th Jun 2026246 AMAQI
26th Jun 20261197 AMAQI
26th Jun 2026768 AMAQI
26th Jun 2026589 AMAQI
26th Jun 202611110 AMAQI
26th Jun 20267711 AMAQI
26th Jun 20262512 PMAQI
26th Jun 2026191 PMAQI
26th Jun 2026282 PMAQI
26th Jun 2026283 PMAQI
26th Jun 2026304 PMAQI
26th Jun 2026285 PMAQI
26th Jun 2026266 PMAQI
26th Jun 2026317 PMAQI
26th Jun 2026308 PMAQI
26th Jun 2026309 PMAQI
26th Jun 20263010 PMAQI
26th Jun 20263611 PMAQI
27th Jun 20263612 AMAQI
27th Jun 2026381 AMAQI
27th Jun 2026382 AMAQI
27th Jun 2026273 AMAQI
27th Jun 2026424 AMAQI
28°C25/31°C
27th Jun 2026285 AMAQI
27th Jun 2026306 AMAQI
27th Jun 2026427 AMAQI
27th Jun 2026288 AMAQI
27th Jun 2026299 AMAQI
27th Jun 20263210 AMAQI
27th Jun 20263211 AMAQI
27th Jun 20261812 PMAQI
27th Jun 2026221 PMAQI
27th Jun 2026322 PMAQI
27th Jun 2026323 PMAQI
27th Jun 2026204 PMAQI
27th Jun 2026285 PMAQI
27th Jun 2026286 PMAQI
27th Jun 2026277 PMAQI
27th Jun 2026288 PMAQI
27th Jun 2026289 PMAQI
27th Jun 20262910 PMAQI
27th Jun 20263311 PMAQI
28th Jun 20262712 AMAQI
28th Jun 2026231 AMAQI
28th Jun 2026262 AMAQI
28th Jun 2026213 AMAQI
28th Jun 2026244 AMAQI
27°C25/30°C
28th Jun 2026235 AMAQI
28th Jun 2026226 AMAQI
28th Jun 2026257 AMAQI
28th Jun 2026298 AMAQI
28th Jun 2026309 AMAQI
28th Jun 20263010 AMAQI
28th Jun 20263011 AMAQI
28th Jun 20261612 PMAQI
28th Jun 2026281 PMAQI
28th Jun 2026282 PMAQI
28th Jun 2026293 PMAQI
28th Jun 2026284 PMAQI
28th Jun 2026265 PMAQI
28th Jun 2026296 PMAQI
28th Jun 2026277 PMAQI
28th Jun 2026288 PMAQI
28th Jun 2026269 PMAQI
28th Jun 20262210 PMAQI
28th Jun 20262011 PMAQI
29th Jun 20263612 AMAQI
29th Jun 2026341 AMAQI
29th Jun 2026302 AMAQI
29th Jun 2026323 AMAQI
29th Jun 2026274 AMAQI
28°C24/32°C
29th Jun 2026215 AMAQI
29th Jun 2026246 AMAQI
29th Jun 2026297 AMAQI
29th Jun 2026338 AMAQI
29th Jun 2026279 AMAQI
29th Jun 20262510 AMAQI
29th Jun 20262611 AMAQI
29th Jun 20262712 PMAQI
29th Jun 2026281 PMAQI
29th Jun 2026242 PMAQI
29th Jun 2026223 PMAQI
29th Jun 2026164 PMAQI
29th Jun 2026215 PMAQI
29th Jun 202686 PMAQI
29th Jun 2026217 PMAQI
29th Jun 2026268 PMAQI
29th Jun 2026289 PMAQI
29th Jun 20262910 PMAQI
29th Jun 20262611 PMAQI
30th Jun 20263412 AMAQI
30th Jun 2026331 AMAQI
30th Jun 2026332 AMAQI
30th Jun 2026423 AMAQI
30th Jun 2026344 AMAQI
29°C25/33°C
30th Jun 2026305 AMAQI
30th Jun 2026316 AMAQI
30th Jun 2026277 AMAQI
30th Jun 2026298 AMAQI
30th Jun 2026299 AMAQI
30th Jun 20262210 AMAQI
30th Jun 20262711 AMAQI
30th Jun 20261612 PMAQI
30th Jun 2026241 PMAQI
30th Jun 2026232 PMAQI
30th Jun 2026233 PMAQI
30th Jun 2026194 PMAQI
30th Jun 2026195 PMAQI
30th Jun 2026276 PMAQI
30th Jun 2026217 PMAQI
30th Jun 2026238 PMAQI
30th Jun 2026289 PMAQI
30th Jun 20263010 PMAQI
30th Jun 20261911 PMAQI
1st Jul 20262712 AMAQI
1st Jul 2026281 AMAQI
1st Jul 2026302 AMAQI
1st Jul 2026283 AMAQI
1st Jul 2026254 AMAQI
28°C25/32°C
1st Jul 2026255 AMAQI
1st Jul 2026246 AMAQI
1st Jul 2026257 AMAQI
1st Jul 2026288 AMAQI
1st Jul 2026289 AMAQI
1st Jul 20262810 AMAQI
1st Jul 20262811 AMAQI
1st Jul 20263012 PMAQI
1st Jul 2026301 PMAQI
1st Jul 2026262 PMAQI
1st Jul 2026283 PMAQI
1st Jul 2026204 PMAQI
1st Jul 2026305 PMAQI
1st Jul 2026286 PMAQI
1st Jul 2026307 PMAQI
1st Jul 2026278 PMAQI
1st Jul 2026469 PMAQI
1st Jul 20264610 PMAQI
1st Jul 20264811 PMAQI
2nd Jul 20263212 AMAQI
2nd Jul 2026221 AMAQI
2nd Jul 2026322 AMAQI
2nd Jul 2026243 AMAQI
2nd Jul 2026274 AMAQI
28°C25/32°C
2nd Jul 2026295 AMAQI
2nd Jul 2026406 AMAQI
2nd Jul 2026467 AMAQI
2nd Jul 2026368 AMAQI
2nd Jul 2026329 AMAQI
2nd Jul 20263510 AMAQI
2nd Jul 20263111 AMAQI
2nd Jul 20263012 PMAQI
2nd Jul 2026251 PMAQI
2nd Jul 2026292 PMAQI
2nd Jul 2026253 PMAQI
2nd Jul 2026354 PMAQI
2nd Jul 2026295 PMAQI
2nd Jul 2026346 PMAQI
2nd Jul 2026367 PMAQI
2nd Jul 2026318 PMAQI
2nd Jul 2026279 PMAQI
2nd Jul 20263410 PMAQI
2nd Jul 20262611 PMAQI
3rd Jul 20262712 AMAQI
3rd Jul 2026301 AMAQI
3rd Jul 2026322 AMAQI
3rd Jul 2026303 AMAQI
3rd Jul 2026284 AMAQI
28°C25/32°C
3rd Jul 2026295 AMAQI
3rd Jul 2026346 AMAQI
3rd Jul 2026447 AMAQI
3rd Jul 2026388 AMAQI
3rd Jul 2026309 AMAQI
3rd Jul 20262810 AMAQI
3rd Jul 20262611 AMAQI
3rd Jul 20262212 PMAQI
3rd Jul 2026281 PMAQI
3rd Jul 2026242 PMAQI
3rd Jul 2026243 PMAQI
3rd Jul 2026244 PMAQI
3rd Jul 2026245 PMAQI
3rd Jul 2026236 PMAQI
3rd Jul 2026307 PMAQI
3rd Jul 2026268 PMAQI
3rd Jul 2026179 PMAQI
3rd Jul 20262610 PMAQI
3rd Jul 20262511 PMAQI
4th Jul 20261612 AMAQI
4th Jul 2026241 AMAQI
4th Jul 2026212 AMAQI
4th Jul 2026163 AMAQI
4th Jul 2026164 AMAQI
28°C25/31°C
4th Jul 2026225 AMAQI
4th Jul 2026216 AMAQI
4th Jul 2026267 AMAQI
4th Jul 2026388 AMAQI
4th Jul 2026449 AMAQI
4th Jul 20263410 AMAQI
4th Jul 20263011 AMAQI
4th Jul 20264012 PMAQI
4th Jul 2026241 PMAQI
4th Jul 2026232 PMAQI
4th Jul 2026123 PMAQI
4th Jul 2026154 PMAQI
4th Jul 2026245 PMAQI
4th Jul 2026176 PMAQI
4th Jul 2026247 PMAQI
4th Jul 2026328 PMAQI
4th Jul 2026349 PMAQI
4th Jul 20263610 PMAQI
4th Jul 20264211 PMAQI
5th Jul 20263412 AMAQI
5th Jul 2026461 AMAQI
5th Jul 2026422 AMAQI
5th Jul 2026953 AMAQI
5th Jul 2026384 AMAQI
28°C25/32°C
5th Jul 2026535 AMAQI
5th Jul 2026766 AMAQI
5th Jul 2026607 AMAQI
5th Jul 2026548 AMAQI
5th Jul 2026549 AMAQI
5th Jul 20265010 AMAQI
5th Jul 20263611 AMAQI
5th Jul 20263812 PMAQI
5th Jul 2026341 PMAQI
5th Jul 2026402 PMAQI
5th Jul 2026383 PMAQI
5th Jul 2026324 PMAQI
5th Jul 2026315 PMAQI
5th Jul 2026286 PMAQI
5th Jul 2026337 PMAQI
5th Jul 2026368 PMAQI
5th Jul 2026259 PMAQI
5th Jul 20262710 PMAQI
5th Jul 20263411 PMAQI
6th Jul 20263612 AMAQI
6th Jul 2026231 AMAQI
6th Jul 2026322 AMAQI
6th Jul 2026253 AMAQI
6th Jul 2026294 AMAQI
28°C25/31°C
6th Jul 2026295 AMAQI
6th Jul 2026426 AMAQI
6th Jul 2026387 AMAQI
6th Jul 2026328 AMAQI
6th Jul 2026229 AMAQI
6th Jul 20261610 AMAQI
6th Jul 20261211 AMAQI
6th Jul 20261212 PMAQI
6th Jul 202691 PMAQI
6th Jul 2026182 PMAQI
6th Jul 2026103 PMAQI
6th Jul 2026144 PMAQI
6th Jul 2026145 PMAQI
6th Jul 2026146 PMAQI
6th Jul 2026107 PMAQI
6th Jul 2026208 PMAQI
6th Jul 2026149 PMAQI
6th Jul 20262110 PMAQI
6th Jul 20261711 PMAQI
7th Jul 20261712 AMAQI
7th Jul 2026231 AMAQI
7th Jul 2026142 AMAQI
7th Jul 2026253 AMAQI
7th Jul 2026274 AMAQI
28°C25/32°C
7th Jul 2026255 AMAQI
7th Jul 2026216 AMAQI
7th Jul 2026207 AMAQI
7th Jul 2026168 AMAQI
7th Jul 2026179 AMAQI
7th Jul 20261410 AMAQI
7th Jul 20261411 AMAQI
7th Jul 20261712 PMAQI
7th Jul 2026311 PMAQI
7th Jul 2026232 PMAQI
7th Jul 2026203 PMAQI
7th Jul 2026194 PMAQI
7th Jul 2026205 PMAQI
7th Jul 2026146 PMAQI
7th Jul 2026647 PMAQI
7th Jul 2026168 PMAQI
7th Jul 2026339 PMAQI
7th Jul 20261710 PMAQI
7th Jul 20261911 PMAQI
8th Jul 20261612 AMAQI
8th Jul 2026231 AMAQI
8th Jul 2026272 AMAQI
8th Jul 2026173 AMAQI
8th Jul 2026214 AMAQI
28°C26/31°C
8th Jul 2026195 AMAQI
8th Jul 2026236 AMAQI
8th Jul 2026197 AMAQI
8th Jul 2026558 AMAQI
8th Jul 2026369 AMAQI
8th Jul 20262510 AMAQI
8th Jul 20262311 AMAQI
8th Jul 20261512 PMAQI
8th Jul 2026171 PMAQI
8th Jul 2026162 PMAQI
8th Jul 2026253 PMAQI
8th Jul 2026154 PMAQI
8th Jul 2026125 PMAQI
8th Jul 2026176 PMAQI
8th Jul 2026197 PMAQI
8th Jul 2026128 PMAQI
8th Jul 2026179 PMAQI
8th Jul 20261010 PMAQI
8th Jul 20261211 PMAQI
9th Jul 20261312 AMAQI
9th Jul 2026151 AMAQI
9th Jul 2026162 AMAQI
9th Jul 2026203 AMAQI
9th Jul 2026164 AMAQI
28°C26/31°C
9th Jul 2026185 AMAQI
9th Jul 2026196 AMAQI
9th Jul 2026167 AMAQI
9th Jul 2026128 AMAQI
9th Jul 2026129 AMAQI
9th Jul 20261210 AMAQI
9th Jul 20262411 AMAQI
9th Jul 20263012 PMAQI
9th Jul 2026201 PMAQI
9th Jul 2026252 PMAQI
9th Jul 2026203 PMAQI
9th Jul 2026204 PMAQI
9th Jul 2026195 PMAQI
9th Jul 2026246 PMAQI
9th Jul 2026237 PMAQI
9th Jul 2026368 PMAQI
9th Jul 2026339 PMAQI
9th Jul 20263610 PMAQI
9th Jul 20263311 PMAQI
10th Jul 20264212 AMAQI
10th Jul 2026441 AMAQI
10th Jul 2026442 AMAQI
10th Jul 2026443 AMAQI
10th Jul 2026464 AMAQI
29°C26/32°C
10th Jul 2026365 AMAQI
10th Jul 2026506 AMAQI
10th Jul 2026427 AMAQI
10th Jul 2026558 AMAQI
10th Jul 2026569 AMAQI
10th Jul 20264910 AMAQI
10th Jul 20264211 AMAQI
10th Jul 20264612 PMAQI
10th Jul 2026491 PMAQI
10th Jul 2026592 PMAQI
10th Jul 2026403 PMAQI
10th Jul 2026404 PMAQI
10th Jul 2026335 PMAQI
10th Jul 2026366 PMAQI
10th Jul 2026337 PMAQI
10th Jul 2026368 PMAQI
10th Jul 2026459 PMAQI
10th Jul 20264010 PMAQI
10th Jul 20262911 PMAQI
11th Jul 20263112 AMAQI
11th Jul 2026361 AMAQI
11th Jul 2026432 AMAQI
11th Jul 2026313 AMAQI
11th Jul 2026384 AMAQI
29°C27/32°C
11th Jul 2026315 AMAQI
11th Jul 2026276 AMAQI
11th Jul 2026347 AMAQI
11th Jul 2026258 AMAQI
11th Jul 2026259 AMAQI
11th Jul 20261910 AMAQI
11th Jul 20262111 AMAQI
11th Jul 20261912 PMAQI
11th Jul 2026141 PMAQI
11th Jul 2026272 PMAQI
11th Jul 2026263 PMAQI
11th Jul 2026254 PMAQI
11th Jul 2026195 PMAQI
11th Jul 2026216 PMAQI
11th Jul 2026277 PMAQI
11th Jul 2026318 PMAQI
11th Jul 2026309 PMAQI
11th Jul 20262110 PMAQI
11th Jul 20262911 PMAQI
12th Jul 20262012 AMAQI
12th Jul 2026251 AMAQI
12th Jul 2026212 AMAQI
12th Jul 2026253 AMAQI
12th Jul 2026264 AMAQI
29°C26/31°C
12th Jul 2026195 AMAQI
12th Jul 2026146 AMAQI
12th Jul 2026217 AMAQI
12th Jul 2026308 AMAQI
12th Jul 2026309 AMAQI
12th Jul 20262910 AMAQI
12th Jul 20262911 AMAQI
12th Jul 20261912 PMAQI
12th Jul 2026191 PMAQI
12th Jul 2026382 PMAQI
12th Jul 2026183 PMAQI
12th Jul 2026144 PMAQI
12th Jul 2026125 PMAQI
12th Jul 2026126 PMAQI
12th Jul 2026177 PMAQI
12th Jul 2026238 PMAQI
12th Jul 2026179 PMAQI
12th Jul 20261910 PMAQI
12th Jul 20261711 PMAQI
13th Jul 20261712 AMAQI
13th Jul 2026241 AMAQI
13th Jul 2026172 AMAQI
13th Jul 2026193 AMAQI
13th Jul 2026254 AMAQI
28°C27/31°C
13th Jul 2026315 AMAQI
13th Jul 2026256 AMAQI
13th Jul 2026297 AMAQI
13th Jul 2026298 AMAQI
13th Jul 2026309 AMAQI
13th Jul 20262910 AMAQI
13th Jul 20261811 AMAQI
13th Jul 20262212 PMAQI
13th Jul 2026251 PMAQI
13th Jul 2026292 PMAQI
13th Jul 2026293 PMAQI
13th Jul 2026214 PMAQI
13th Jul 2026215 PMAQI
13th Jul 2026246 PMAQI
13th Jul 2026217 PMAQI
13th Jul 2026368 PMAQI
13th Jul 2026279 PMAQI
13th Jul 20262710 PMAQI
13th Jul 20262711 PMAQI
14th Jul 20262712 AMAQI
14th Jul 2026311 AMAQI
14th Jul 2026292 AMAQI
14th Jul 2026343 AMAQI
14th Jul 2026274 AMAQI
28°C25/32°C
14th Jul 2026235 AMAQI
14th Jul 2026196 AMAQI
14th Jul 2026267 AMAQI
14th Jul 2026348 AMAQI
14th Jul 2026259 AMAQI
14th Jul 20262710 AMAQI
14th Jul 20262811 AMAQI
14th Jul 20262012 PMAQI
14th Jul 2026291 PMAQI
14th Jul 2026272 PMAQI
14th Jul 2026243 PMAQI
14th Jul 2026314 PMAQI
14th Jul 2026295 PMAQI
14th Jul 2026326 PMAQI
14th Jul 2026407 PMAQI
14th Jul 2026318 PMAQI
14th Jul 2026329 PMAQI
14th Jul 20262610 PMAQI
14th Jul 20264811 PMAQI
15th Jul 20262212 AMAQI
15th Jul 2026221 AMAQI
15th Jul 2026482 AMAQI
15th Jul 2026483 AMAQI
15th Jul 2026504 AMAQI
28°C25/32°C
15th Jul 2026555 AMAQI
15th Jul 2026626 AMAQI
15th Jul 2026677 AMAQI
15th Jul 2026568 AMAQI
15th Jul 2026629 AMAQI
15th Jul 20265510 AMAQI
15th Jul 20264911 AMAQI
15th Jul 20265512 PMAQI
15th Jul 2026421 PMAQI
15th Jul 2026502 PMAQI
15th Jul 2026473 PMAQI
15th Jul 2026444 PMAQI
15th Jul 2026545 PMAQI
15th Jul 2026446 PMAQI
15th Jul 2026647 PMAQI
15th Jul 2026648 PMAQI
15th Jul 2026789 PMAQI
15th Jul 20266210 PMAQI
15th Jul 20268211 PMAQI
16th Jul 20267312 AMAQI
16th Jul 2026361 AMAQI
16th Jul 2026342 AMAQI
16th Jul 2026223 AMAQI
16th Jul 2026364 AMAQI
28°C24/31°C
16th Jul 2026455 AMAQI
16th Jul 2026386 AMAQI
16th Jul 2026587 AMAQI
16th Jul 2026428 AMAQI
16th Jul 2026549 AMAQI
16th Jul 20263610 AMAQI
16th Jul 20263611 AMAQI
16th Jul 20266412 PMAQI
16th Jul 2026341 PMAQI
16th Jul 2026342 PMAQI
16th Jul 2026193 PMAQI
16th Jul 2026264 PMAQI
16th Jul 2026215 PMAQI
16th Jul 2026286 PMAQI
16th Jul 2026267 PMAQI
16th Jul 2026278 PMAQI
16th Jul 2026459 PMAQI
16th Jul 20264310 PMAQI
16th Jul 20263211 PMAQI
17th Jul 20263812 AMAQI
17th Jul 2026461 AMAQI
17th Jul 2026402 AMAQI
17th Jul 2026463 AMAQI
17th Jul 2026364 AMAQI
28°C24/31°C
17th Jul 2026365 AMAQI
5 AM17th Jul 2026426 AMAQI
17th Jul 2026427 AMAQI
17th Jul 2026428 AMAQI
17th Jul 2026409 AMAQI
17th Jul 20264210 AMAQI
17th Jul 20264611 AMAQI
17th Jul 20264612 PMAQI
12 PM17th Jul 2026441 PMAQI
17th Jul 2026482 PMAQI
17th Jul 2026463 PMAQI
17th Jul 2026484 PMAQI
17th Jul 2026485 PMAQI
17th Jul 2026506 PMAQI
17th Jul 2026507 PMAQI
7 PM17th Jul 2026538 PMAQI
17th Jul 2026529 PMAQI
17th Jul 20265210 PMAQI
17th Jul 20264611 PMAQI
12 AM
4 AM
28°C25/32°C
Day time
Avg. Highest Time
7 AM - 8 AM
39AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 PM
28AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 8 AM (Avg. 39), while the lowest AQI was between 6 PM to 6 PM (Avg. 28).
Night time
Avg. Highest Time
1 AM
37AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
8 PM
32AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 37), while the lowest AQI was between 8 PM to 8 PM (Avg. 32).
2026 Days Vs Air Quality
San Juan Puerto Rico, Catano, Puerto Rico, United States
2026
77%
150
23%
45
Total number of days with different AQI categories in last 198 days in 2026 (167 days remaining)
Good
150 DaysModerate
45 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2026, 77% of 198 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
San Juan Puerto Rico, Catano, Puerto Rico, United States
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
39AQI (US)
39AQI (US)
2nd January 2026
41AQI (US)
41AQI (US)
3rd January 2026
48AQI (US)
48AQI (US)
4th January 2026
49AQI (US)
49AQI (US)
5th January 2026
51AQI (US)
51AQI (US)
6th January 2026
48AQI (US)
48AQI (US)
7th January 2026
55AQI (US)
55AQI (US)
8th January 2026
49AQI (US)
49AQI (US)
9th January 2026
45AQI (US)
45AQI (US)
10th January 2026
45AQI (US)
45AQI (US)
11th January 2026
50AQI (US)
50AQI (US)
12th January 2026
45AQI (US)
45AQI (US)
13th January 2026
41AQI (US)
41AQI (US)
14th January 2026
30AQI (US)
30AQI (US)
15th January 2026
34AQI (US)
34AQI (US)
16th January 2026
33AQI (US)
33AQI (US)
17th January 2026
38AQI (US)
38AQI (US)
18th January 2026
35AQI (US)
35AQI (US)
19th January 2026
35AQI (US)
35AQI (US)
20th January 2026
49AQI (US)
49AQI (US)
21st January 2026
36AQI (US)
36AQI (US)
22nd January 2026
54AQI (US)
54AQI (US)
23rd January 2026
56AQI (US)
56AQI (US)
24th January 2026
51AQI (US)
51AQI (US)
25th January 2026
54AQI (US)
54AQI (US)
26th January 2026
50AQI (US)
50AQI (US)
27th January 2026
44AQI (US)
44AQI (US)
28th January 2026
49AQI (US)
49AQI (US)
29th January 2026
52AQI (US)
52AQI (US)
30th January 2026
57AQI (US)
57AQI (US)
31st January 2026
53AQI (US)
53AQI (US)
1st February 2026
53AQI (US)
53AQI (US)
2nd February 2026
57AQI (US)
57AQI (US)
3rd February 2026
53AQI (US)
53AQI (US)
4th February 2026
53AQI (US)
53AQI (US)
5th February 2026
58AQI (US)
58AQI (US)
6th February 2026
53AQI (US)
53AQI (US)
7th February 2026
48AQI (US)
48AQI (US)
8th February 2026
52AQI (US)
52AQI (US)
9th February 2026
50AQI (US)
50AQI (US)
10th February 2026
52AQI (US)
52AQI (US)
11th February 2026
55AQI (US)
55AQI (US)
12th February 2026
57AQI (US)
57AQI (US)
13th February 2026
60AQI (US)
60AQI (US)
14th February 2026
66AQI (US)
66AQI (US)
15th February 2026
62AQI (US)
62AQI (US)
16th February 2026
63AQI (US)
63AQI (US)
17th February 2026
62AQI (US)
62AQI (US)
18th February 2026
52AQI (US)
52AQI (US)
19th February 2026
59AQI (US)
59AQI (US)
20th February 2026
53AQI (US)
53AQI (US)
21st February 2026
52AQI (US)
52AQI (US)
22nd February 2026
46AQI (US)
46AQI (US)
23rd February 2026
46AQI (US)
46AQI (US)
24th February 2026
49AQI (US)
49AQI (US)
25th February 2026
49AQI (US)
49AQI (US)
26th February 2026
55AQI (US)
55AQI (US)
27th February 2026
43AQI (US)
43AQI (US)
28th February 2026
40AQI (US)
40AQI (US)
1st March 2026
56AQI (US)
56AQI (US)
2nd March 2026
55AQI (US)
55AQI (US)
3rd March 2026
57AQI (US)
57AQI (US)
4th March 2026
56AQI (US)
56AQI (US)
5th March 2026
50AQI (US)
50AQI (US)
6th March 2026
62AQI (US)
62AQI (US)
7th March 2026
48AQI (US)
48AQI (US)
8th March 2026
53AQI (US)
53AQI (US)
9th March 2026
50AQI (US)
50AQI (US)
10th March 2026
48AQI (US)
48AQI (US)
11th March 2026
47AQI (US)
47AQI (US)
12th March 2026
49AQI (US)
49AQI (US)
13th March 2026
56AQI (US)
56AQI (US)
14th March 2026
40AQI (US)
40AQI (US)
15th March 2026
55AQI (US)
55AQI (US)
16th March 2026
46AQI (US)
46AQI (US)
17th March 2026
41AQI (US)
41AQI (US)
18th March 2026
38AQI (US)
38AQI (US)
19th March 2026
52AQI (US)
52AQI (US)
20th March 2026
49AQI (US)
49AQI (US)
21st March 2026
40AQI (US)
40AQI (US)
22nd March 2026
41AQI (US)
41AQI (US)
23rd March 2026
42AQI (US)
42AQI (US)
24th March 2026
43AQI (US)
43AQI (US)
25th March 2026
40AQI (US)
40AQI (US)
26th March 2026
47AQI (US)
47AQI (US)
27th March 2026
44AQI (US)
44AQI (US)
28th March 2026
40AQI (US)
40AQI (US)
29th March 2026
45AQI (US)
45AQI (US)
30th March 2026
42AQI (US)
42AQI (US)
31st March 2026
34AQI (US)
34AQI (US)
1st April 2026
37AQI (US)
37AQI (US)
2nd April 2026
43AQI (US)
43AQI (US)
3rd April 2026
35AQI (US)
35AQI (US)
4th April 2026
39AQI (US)
39AQI (US)
5th April 2026
41AQI (US)
41AQI (US)
6th April 2026
47AQI (US)
47AQI (US)
7th April 2026
39AQI (US)
39AQI (US)
8th April 2026
47AQI (US)
47AQI (US)
9th April 2026
32AQI (US)
32AQI (US)
10th April 2026
43AQI (US)
43AQI (US)
11th April 2026
43AQI (US)
43AQI (US)
12th April 2026
46AQI (US)
46AQI (US)
13th April 2026
47AQI (US)
47AQI (US)
14th April 2026
48AQI (US)
48AQI (US)
15th April 2026
43AQI (US)
43AQI (US)
16th April 2026
40AQI (US)
40AQI (US)
17th April 2026
18th April 2026
46AQI (US)
46AQI (US)
19th April 2026
47AQI (US)
47AQI (US)
20th April 2026
42AQI (US)
42AQI (US)
21st April 2026
35AQI (US)
35AQI (US)
22nd April 2026
23rd April 2026
29AQI (US)
29AQI (US)
24th April 2026
38AQI (US)
38AQI (US)
25th April 2026
37AQI (US)
37AQI (US)
26th April 2026
37AQI (US)
37AQI (US)
27th April 2026
37AQI (US)
37AQI (US)
28th April 2026
31AQI (US)
31AQI (US)
29th April 2026
31AQI (US)
31AQI (US)
30th April 2026
35AQI (US)
35AQI (US)
1st May 2026
34AQI (US)
34AQI (US)
2nd May 2026
30AQI (US)
30AQI (US)
3rd May 2026
43AQI (US)
43AQI (US)
4th May 2026
33AQI (US)
33AQI (US)
5th May 2026
44AQI (US)
44AQI (US)
6th May 2026
49AQI (US)
49AQI (US)
7th May 2026
45AQI (US)
45AQI (US)
8th May 2026
36AQI (US)
36AQI (US)
9th May 2026
10th May 2026
51AQI (US)
51AQI (US)
11th May 2026
44AQI (US)
44AQI (US)
12th May 2026
43AQI (US)
43AQI (US)
13th May 2026
47AQI (US)
47AQI (US)
14th May 2026
39AQI (US)
39AQI (US)
15th May 2026
42AQI (US)
42AQI (US)
16th May 2026
48AQI (US)
48AQI (US)
17th May 2026
45AQI (US)
45AQI (US)
18th May 2026
42AQI (US)
42AQI (US)
19th May 2026
37AQI (US)
37AQI (US)
20th May 2026
45AQI (US)
45AQI (US)
21st May 2026
42AQI (US)
42AQI (US)
22nd May 2026
39AQI (US)
39AQI (US)
23rd May 2026
43AQI (US)
43AQI (US)
24th May 2026
45AQI (US)
45AQI (US)
25th May 2026
46AQI (US)
46AQI (US)
26th May 2026
40AQI (US)
40AQI (US)
27th May 2026
34AQI (US)
34AQI (US)
28th May 2026
46AQI (US)
46AQI (US)
29th May 2026
35AQI (US)
35AQI (US)
30th May 2026
26AQI (US)
26AQI (US)
31st May 2026
33AQI (US)
33AQI (US)
1st June 2026
56AQI (US)
56AQI (US)
2nd June 2026
54AQI (US)
54AQI (US)
3rd June 2026
50AQI (US)
50AQI (US)
4th June 2026
31AQI (US)
31AQI (US)
5th June 2026
34AQI (US)
34AQI (US)
6th June 2026
40AQI (US)
40AQI (US)
7th June 2026
23AQI (US)
23AQI (US)
8th June 2026
34AQI (US)
34AQI (US)
9th June 2026
32AQI (US)
32AQI (US)
10th June 2026
30AQI (US)
30AQI (US)
11th June 2026
48AQI (US)
48AQI (US)
12th June 2026
47AQI (US)
47AQI (US)
13th June 2026
44AQI (US)
44AQI (US)
14th June 2026
35AQI (US)
35AQI (US)
15th June 2026
56AQI (US)
56AQI (US)
16th June 2026
46AQI (US)
46AQI (US)
17th June 2026
44AQI (US)
44AQI (US)
18th June 2026
44AQI (US)
44AQI (US)
19th June 2026
52AQI (US)
52AQI (US)
20th June 2026
37AQI (US)
37AQI (US)
21st June 2026
37AQI (US)
37AQI (US)
22nd June 2026
39AQI (US)
39AQI (US)
23rd June 2026
42AQI (US)
42AQI (US)
24th June 2026
51AQI (US)
51AQI (US)
25th June 2026
28AQI (US)
28AQI (US)
26th June 2026
40AQI (US)
40AQI (US)
27th June 2026
30AQI (US)
30AQI (US)
28th June 2026
26AQI (US)
26AQI (US)
29th June 2026
26AQI (US)
26AQI (US)
30th June 2026
27AQI (US)
27AQI (US)
1st July 2026
30AQI (US)
30AQI (US)
2nd July 2026
31AQI (US)
31AQI (US)
3rd July 2026
28AQI (US)
28AQI (US)
4th July 2026
26AQI (US)
26AQI (US)
5th July 2026
43AQI (US)
43AQI (US)
6th July 2026
21AQI (US)
21AQI (US)
7th July 2026
22AQI (US)
22AQI (US)
8th July 2026
20AQI (US)
20AQI (US)
9th July 2026
21AQI (US)
21AQI (US)
10th July 2026
43AQI (US)
43AQI (US)
11th July 2026
27AQI (US)
27AQI (US)
12th July 2026
21AQI (US)
21AQI (US)
13th July 2026
25AQI (US)
25AQI (US)
14th July 2026
29AQI (US)
29AQI (US)
15th July 2026
53AQI (US)
53AQI (US)
16th July 2026
38AQI (US)
38AQI (US)
17th July 2026
45AQI (US)
45AQI (US)
18th July 2026
19th July 2026
20th July 2026
21st July 2026
22nd July 2026
23rd July 2026
24th July 2026
25th July 2026
26th July 2026
27th July 2026
28th July 2026
29th July 2026
30th July 2026
31st July 2026
1st August 2026
2nd August 2026
3rd August 2026
4th August 2026
5th August 2026
6th August 2026
7th August 2026
8th August 2026
9th August 2026
10th August 2026
11th August 2026
12th August 2026
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
46AQI (US)
54AQI (US)
47AQI (US)
40AQI (US)
41AQI (US)
39AQI (US)
31AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202643AQI (US)
22
9
8
20
22
9
28
29
1
25
5
16
1
150
45
Highest AQI (US) recorded in
February54AQI (US)
Lowest AQI (US) recorded in
July31AQI (US)
202545AQI (US)
29
2
27
1
28
3
29
1
31
15
15
15
13
3
25
6
30
22
9
13
17
6
25
270
92
3
Highest AQI (US) recorded in
July61AQI (US)
Lowest AQI (US) recorded in
May35AQI (US)
202443AQI (US)
15
1
2
4
5
16
5
29
1
28
3
27
4
29
1
25
6
23
7
25
6
205
34
18
5
Highest AQI (US) recorded in
April123AQI (US)
Lowest AQI (US) recorded in
January19AQI (US)
202341AQI (US)
1
16
3
13
1
3
31
38
29
1
Highest AQI (US) recorded in
August73AQI (US)
Lowest AQI (US) recorded in
December9AQI (US)
202233AQI (US)
12
2
25
17
26
5
19
11
21
2
1
24
2
26
5
26
4
5
201
32
Highest AQI (US) recorded in
August60AQI (US)
Lowest AQI (US) recorded in
March23AQI (US)
202149AQI (US)
5
4
21
30
16
12
1
4
4
3
13
15
3
24
2
12
17
1
9
17
2
2
3
117
91
12
Highest AQI (US) recorded in
November95AQI (US)
Lowest AQI (US) recorded in
April19AQI (US)
202022AQI (US)
3
3
4
4
4
5
4
4
5
4
40
Highest AQI (US) recorded in
March22AQI (US)
Lowest AQI (US) recorded in
December22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2021(Avg.)
49AQI (US)Least Polluted Year Recorded
2020(Avg.)
22AQI (US)San Juan Puerto Rico's annual 2026 AQI (US) (43) shows an average percentage change of 18.9% (worsened AQI (US)) compared to previous years: 2020 (22), 2021 (49), 2022 (33), 2023 (41), 2024 (43), 2025 (45).
