El Cajon, California, 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
El Cajon, California, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
1st Jul 2022
279AQILowest AQI recorded on
26th Jul 2025
21AQISame Day Analysis (29th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 32 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 29th Jul - 30th Jul 2025
El Cajon, California, United States
AQI
Day
Night
.
5 AM29th Jul 2025
7 PM
4 AM30th Jul 2025
Day time
Avg. Highest Time
12PM29th Jul
43AQI
Avg. Lowest Time
6AM29th Jul
30AQI
Night time
Avg. Highest Time
4AM30th Jul
40AQI
Avg. Lowest Time
5AM29th Jul
30AQI
In the last 24 hours,
El Cajon's AQI reached its highest point of 43 at 12 PM during the Day, while the lowest point, 30, was recorded at 6 AM during the Day between 29th Jul and 30th Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
El Cajon, California, United States
JunJul
30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th
Day
Night
30th Jun 2025305 AMAQI
30th Jun 2025296 AMAQI
30th Jun 2025317 AMAQI
30th Jun 2025318 AMAQI
30th Jun 2025339 AMAQI
30th Jun 20253710 AMAQI
30th Jun 20254111 AMAQI
30th Jun 20254412 PMAQI
30th Jun 2025441 PMAQI
30th Jun 2025432 PMAQI
30th Jun 2025433 PMAQI
30th Jun 2025434 PMAQI
30th Jun 2025455 PMAQI
30th Jun 2025406 PMAQI
30th Jun 2025367 PMAQI
30th Jun 2025358 PMAQI
30th Jun 2025339 PMAQI
30th Jun 20253110 PMAQI
30th Jun 20253111 PMAQI
1st Jul 20253412 AMAQI
1st Jul 2025341 AMAQI
1st Jul 2025362 AMAQI
1st Jul 2025363 AMAQI
1st Jul 2025294 AMAQI
23°C16/32°C
1st Jul 2025325 AMAQI
1st Jul 2025356 AMAQI
1st Jul 2025377 AMAQI
1st Jul 2025398 AMAQI
1st Jul 2025419 AMAQI
1st Jul 20254310 AMAQI
1st Jul 20254611 AMAQI
1st Jul 20254912 PMAQI
1st Jul 2025531 PMAQI
1st Jul 2025532 PMAQI
1st Jul 2025473 PMAQI
1st Jul 2025464 PMAQI
1st Jul 2025435 PMAQI
1st Jul 2025416 PMAQI
1st Jul 2025367 PMAQI
1st Jul 2025348 PMAQI
1st Jul 2025349 PMAQI
1st Jul 20253310 PMAQI
1st Jul 20253511 PMAQI
2nd Jul 20253212 AMAQI
2nd Jul 2025321 AMAQI
2nd Jul 2025322 AMAQI
2nd Jul 2025353 AMAQI
2nd Jul 2025324 AMAQI
22°C17/31°C
2nd Jul 2025335 AMAQI
2nd Jul 2025356 AMAQI
2nd Jul 2025357 AMAQI
2nd Jul 2025358 AMAQI
2nd Jul 2025359 AMAQI
2nd Jul 20253510 AMAQI
2nd Jul 20253511 AMAQI
2nd Jul 20254412 PMAQI
2nd Jul 2025491 PMAQI
2nd Jul 2025482 PMAQI
2nd Jul 2025483 PMAQI
2nd Jul 2025484 PMAQI
2nd Jul 2025485 PMAQI
2nd Jul 2025486 PMAQI
2nd Jul 2025437 PMAQI
2nd Jul 2025368 PMAQI
2nd Jul 2025369 PMAQI
2nd Jul 20253610 PMAQI
2nd Jul 20253611 PMAQI
3rd Jul 20253612 AMAQI
3rd Jul 2025361 AMAQI
3rd Jul 2025362 AMAQI
3rd Jul 2025363 AMAQI
3rd Jul 2025314 AMAQI
21°C16/29°C
3rd Jul 2025325 AMAQI
3rd Jul 2025356 AMAQI
3rd Jul 2025367 AMAQI
3rd Jul 2025368 AMAQI
3rd Jul 2025379 AMAQI
3rd Jul 20253710 AMAQI
3rd Jul 20253811 AMAQI
3rd Jul 20254212 PMAQI
3rd Jul 2025441 PMAQI
3rd Jul 2025482 PMAQI
3rd Jul 2025483 PMAQI
3rd Jul 2025444 PMAQI
3rd Jul 2025415 PMAQI
3rd Jul 2025416 PMAQI
3rd Jul 2025387 PMAQI
3rd Jul 2025388 PMAQI
3rd Jul 2025389 PMAQI
3rd Jul 20253910 PMAQI
3rd Jul 20253711 PMAQI
4th Jul 20253712 AMAQI
4th Jul 2025351 AMAQI
4th Jul 2025362 AMAQI
4th Jul 2025363 AMAQI
4th Jul 2025354 AMAQI
21°C15/29°C
4th Jul 2025365 AMAQI
4th Jul 2025356 AMAQI
4th Jul 2025377 AMAQI
4th Jul 2025398 AMAQI
4th Jul 2025419 AMAQI
4th Jul 20254410 AMAQI
4th Jul 20254311 AMAQI
4th Jul 20254512 PMAQI
4th Jul 2025481 PMAQI
4th Jul 2025472 PMAQI
4th Jul 2025463 PMAQI
4th Jul 2025464 PMAQI
4th Jul 2025465 PMAQI
4th Jul 2025456 PMAQI
4th Jul 2025427 PMAQI
4th Jul 2025418 PMAQI
4th Jul 2025419 PMAQI
4th Jul 20253810 PMAQI
4th Jul 20254011 PMAQI
5th Jul 20254312 AMAQI
5th Jul 2025531 AMAQI
5th Jul 2025572 AMAQI
5th Jul 2025583 AMAQI
5th Jul 2025594 AMAQI
22°C16/31°C
5th Jul 2025585 AMAQI
5th Jul 2025596 AMAQI
5th Jul 2025587 AMAQI
5th Jul 2025588 AMAQI
5th Jul 2025639 AMAQI
5th Jul 20256310 AMAQI
5th Jul 20256111 AMAQI
5th Jul 20256112 PMAQI
5th Jul 2025611 PMAQI
5th Jul 2025612 PMAQI
5th Jul 2025623 PMAQI
5th Jul 2025624 PMAQI
5th Jul 2025605 PMAQI
5th Jul 2025606 PMAQI
5th Jul 2025597 PMAQI
5th Jul 2025588 PMAQI
5th Jul 2025569 PMAQI
5th Jul 20255810 PMAQI
5th Jul 20255711 PMAQI
6th Jul 20255612 AMAQI
6th Jul 2025541 AMAQI
6th Jul 2025532 AMAQI
6th Jul 2025543 AMAQI
6th Jul 2025474 AMAQI
23°C16/32°C
6th Jul 2025495 AMAQI
6th Jul 2025506 AMAQI
6th Jul 2025537 AMAQI
6th Jul 2025548 AMAQI
6th Jul 2025549 AMAQI
6th Jul 20255510 AMAQI
6th Jul 20255511 AMAQI
6th Jul 20255412 PMAQI
6th Jul 2025561 PMAQI
6th Jul 2025542 PMAQI
6th Jul 2025553 PMAQI
6th Jul 2025544 PMAQI
6th Jul 2025545 PMAQI
6th Jul 2025546 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025538 PMAQI
6th Jul 2025539 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255411 PMAQI
7th Jul 20255412 AMAQI
7th Jul 2025541 AMAQI
7th Jul 2025542 AMAQI
7th Jul 2025533 AMAQI
7th Jul 2025524 AMAQI
23°C17/32°C
7th Jul 2025545 AMAQI
7th Jul 2025546 AMAQI
7th Jul 2025557 AMAQI
7th Jul 2025558 AMAQI
7th Jul 2025559 AMAQI
7th Jul 20255610 AMAQI
7th Jul 20255711 AMAQI
7th Jul 20255812 PMAQI
7th Jul 2025601 PMAQI
7th Jul 2025602 PMAQI
7th Jul 2025583 PMAQI
7th Jul 2025584 PMAQI
7th Jul 2025575 PMAQI
7th Jul 2025586 PMAQI
7th Jul 2025557 PMAQI
7th Jul 2025558 PMAQI
7th Jul 2025559 PMAQI
7th Jul 20255410 PMAQI
7th Jul 20255411 PMAQI
8th Jul 20255512 AMAQI
8th Jul 2025541 AMAQI
8th Jul 2025552 AMAQI
8th Jul 2025543 AMAQI
8th Jul 2025544 AMAQI
22°C17/30°C
8th Jul 2025545 AMAQI
8th Jul 2025546 AMAQI
8th Jul 2025557 AMAQI
8th Jul 2025558 AMAQI
8th Jul 2025569 AMAQI
8th Jul 20255710 AMAQI
8th Jul 20255811 AMAQI
8th Jul 20256012 PMAQI
8th Jul 2025611 PMAQI
8th Jul 2025602 PMAQI
8th Jul 2025583 PMAQI
8th Jul 2025574 PMAQI
8th Jul 2025565 PMAQI
8th Jul 2025556 PMAQI
8th Jul 2025547 PMAQI
8th Jul 2025538 PMAQI
8th Jul 2025519 PMAQI
8th Jul 20254910 PMAQI
8th Jul 20254811 PMAQI
9th Jul 20254812 AMAQI
9th Jul 2025481 AMAQI
9th Jul 2025492 AMAQI
9th Jul 2025473 AMAQI
9th Jul 2025414 AMAQI
23°C17/32°C
9th Jul 2025425 AMAQI
9th Jul 2025416 AMAQI
9th Jul 2025447 AMAQI
9th Jul 2025428 AMAQI
9th Jul 2025439 AMAQI
9th Jul 20254710 AMAQI
9th Jul 20255011 AMAQI
9th Jul 20255112 PMAQI
9th Jul 2025501 PMAQI
9th Jul 2025502 PMAQI
9th Jul 2025503 PMAQI
9th Jul 2025494 PMAQI
9th Jul 2025485 PMAQI
9th Jul 2025466 PMAQI
9th Jul 2025447 PMAQI
9th Jul 2025458 PMAQI
9th Jul 2025439 PMAQI
9th Jul 20254410 PMAQI
9th Jul 20254211 PMAQI
10th Jul 20254212 AMAQI
10th Jul 2025421 AMAQI
10th Jul 2025422 AMAQI
10th Jul 2025413 AMAQI
10th Jul 2025374 AMAQI
25°C18/35°C
10th Jul 2025355 AMAQI
10th Jul 2025376 AMAQI
10th Jul 2025367 AMAQI
10th Jul 2025368 AMAQI
10th Jul 2025379 AMAQI
10th Jul 20253710 AMAQI
10th Jul 20253911 AMAQI
10th Jul 20254212 PMAQI
10th Jul 2025451 PMAQI
10th Jul 2025452 PMAQI
10th Jul 2025493 PMAQI
10th Jul 2025484 PMAQI
10th Jul 2025505 PMAQI
10th Jul 2025516 PMAQI
10th Jul 2025437 PMAQI
10th Jul 2025448 PMAQI
10th Jul 2025509 PMAQI
10th Jul 20254910 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255212 AMAQI
11th Jul 2025511 AMAQI
11th Jul 2025512 AMAQI
11th Jul 2025523 AMAQI
11th Jul 2025564 AMAQI
25°C19/35°C
11th Jul 2025565 AMAQI
11th Jul 2025566 AMAQI
11th Jul 2025577 AMAQI
11th Jul 2025588 AMAQI
11th Jul 2025589 AMAQI
11th Jul 20255810 AMAQI
11th Jul 20255911 AMAQI
11th Jul 20256012 PMAQI
11th Jul 2025601 PMAQI
11th Jul 2025592 PMAQI
11th Jul 2025573 PMAQI
11th Jul 2025574 PMAQI
11th Jul 2025565 PMAQI
11th Jul 2025556 PMAQI
11th Jul 2025557 PMAQI
11th Jul 2025548 PMAQI
11th Jul 2025529 PMAQI
11th Jul 20255210 PMAQI
11th Jul 20255211 PMAQI
12th Jul 20255112 AMAQI
12th Jul 2025511 AMAQI
12th Jul 2025522 AMAQI
12th Jul 2025513 AMAQI
12th Jul 2025484 AMAQI
23°C18/30°C
12th Jul 2025485 AMAQI
12th Jul 2025506 AMAQI
12th Jul 2025527 AMAQI
12th Jul 2025538 AMAQI
12th Jul 2025549 AMAQI
12th Jul 20255510 AMAQI
12th Jul 20255611 AMAQI
12th Jul 20255812 PMAQI
12th Jul 2025611 PMAQI
12th Jul 2025602 PMAQI
12th Jul 2025593 PMAQI
12th Jul 2025574 PMAQI
12th Jul 2025555 PMAQI
12th Jul 2025536 PMAQI
12th Jul 2025527 PMAQI
12th Jul 2025518 PMAQI
12th Jul 2025489 PMAQI
12th Jul 20255010 PMAQI
12th Jul 20255011 PMAQI
13th Jul 20254912 AMAQI
13th Jul 2025501 AMAQI
13th Jul 2025502 AMAQI
13th Jul 2025463 AMAQI
13th Jul 2025384 AMAQI
21°C15/30°C
13th Jul 2025375 AMAQI
13th Jul 2025406 AMAQI
13th Jul 2025417 AMAQI
13th Jul 2025428 AMAQI
13th Jul 2025449 AMAQI
13th Jul 20254710 AMAQI
13th Jul 20254811 AMAQI
13th Jul 20254812 PMAQI
13th Jul 2025501 PMAQI
13th Jul 2025532 PMAQI
13th Jul 2025523 PMAQI
13th Jul 2025524 PMAQI
13th Jul 2025525 PMAQI
13th Jul 2025516 PMAQI
13th Jul 2025467 PMAQI
13th Jul 2025448 PMAQI
13th Jul 2025409 PMAQI
13th Jul 20254210 PMAQI
13th Jul 20254111 PMAQI
14th Jul 20254212 AMAQI
14th Jul 2025411 AMAQI
14th Jul 2025412 AMAQI
14th Jul 2025383 AMAQI
14th Jul 2025334 AMAQI
23°C17/30°C
14th Jul 2025345 AMAQI
14th Jul 2025356 AMAQI
14th Jul 2025387 AMAQI
14th Jul 2025408 AMAQI
14th Jul 2025439 AMAQI
14th Jul 20254410 AMAQI
14th Jul 20254611 AMAQI
14th Jul 20254912 PMAQI
14th Jul 2025521 PMAQI
14th Jul 2025512 PMAQI
14th Jul 2025493 PMAQI
14th Jul 2025464 PMAQI
14th Jul 2025425 PMAQI
14th Jul 2025406 PMAQI
14th Jul 2025397 PMAQI
14th Jul 2025388 PMAQI
14th Jul 2025339 PMAQI
14th Jul 20253210 PMAQI
14th Jul 20253211 PMAQI
15th Jul 20253112 AMAQI
15th Jul 2025331 AMAQI
15th Jul 2025322 AMAQI
15th Jul 2025323 AMAQI
15th Jul 2025314 AMAQI
22°C16/30°C
15th Jul 2025275 AMAQI
15th Jul 2025306 AMAQI
15th Jul 2025337 AMAQI
15th Jul 2025338 AMAQI
15th Jul 2025349 AMAQI
15th Jul 20253610 AMAQI
15th Jul 20253811 AMAQI
15th Jul 20254112 PMAQI
15th Jul 2025441 PMAQI
15th Jul 2025512 PMAQI
15th Jul 2025483 PMAQI
15th Jul 2025484 PMAQI
15th Jul 2025455 PMAQI
15th Jul 2025406 PMAQI
15th Jul 2025357 PMAQI
15th Jul 2025338 PMAQI
15th Jul 2025319 PMAQI
15th Jul 20253010 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252912 AMAQI
16th Jul 2025291 AMAQI
16th Jul 2025302 AMAQI
16th Jul 2025293 AMAQI
16th Jul 2025254 AMAQI
22°C17/30°C
16th Jul 2025275 AMAQI
16th Jul 2025296 AMAQI
16th Jul 2025307 AMAQI
16th Jul 2025318 AMAQI
16th Jul 2025329 AMAQI
16th Jul 20253410 AMAQI
16th Jul 20253611 AMAQI
16th Jul 20253912 PMAQI
16th Jul 2025391 PMAQI
16th Jul 2025382 PMAQI
16th Jul 2025393 PMAQI
16th Jul 2025374 PMAQI
16th Jul 2025365 PMAQI
16th Jul 2025346 PMAQI
16th Jul 2025307 PMAQI
16th Jul 2025288 PMAQI
16th Jul 2025259 PMAQI
16th Jul 20252510 PMAQI
16th Jul 20252411 PMAQI
17th Jul 20252512 AMAQI
17th Jul 2025261 AMAQI
17th Jul 2025252 AMAQI
17th Jul 2025263 AMAQI
17th Jul 2025204 AMAQI
22°C18/29°C
17th Jul 2025205 AMAQI
17th Jul 2025206 AMAQI
17th Jul 2025217 AMAQI
17th Jul 2025218 AMAQI
17th Jul 2025219 AMAQI
17th Jul 20252310 AMAQI
17th Jul 20252411 AMAQI
17th Jul 20252412 PMAQI
17th Jul 2025261 PMAQI
17th Jul 2025282 PMAQI
17th Jul 2025293 PMAQI
17th Jul 2025304 PMAQI
17th Jul 2025295 PMAQI
17th Jul 2025286 PMAQI
17th Jul 2025247 PMAQI
17th Jul 2025248 PMAQI
17th Jul 2025269 PMAQI
17th Jul 20252510 PMAQI
17th Jul 20252511 PMAQI
18th Jul 20252412 AMAQI
18th Jul 2025241 AMAQI
18th Jul 2025232 AMAQI
18th Jul 2025223 AMAQI
18th Jul 2025184 AMAQI
23°C18/31°C
18th Jul 2025185 AMAQI
18th Jul 2025196 AMAQI
18th Jul 2025207 AMAQI
18th Jul 2025208 AMAQI
18th Jul 2025229 AMAQI
18th Jul 20252310 AMAQI
18th Jul 20252311 AMAQI
18th Jul 20252512 PMAQI
18th Jul 2025251 PMAQI
18th Jul 2025282 PMAQI
18th Jul 2025293 PMAQI
18th Jul 2025294 PMAQI
18th Jul 2025295 PMAQI
18th Jul 2025296 PMAQI
18th Jul 2025267 PMAQI
18th Jul 2025258 PMAQI
18th Jul 2025299 PMAQI
18th Jul 20252910 PMAQI
18th Jul 20252711 PMAQI
19th Jul 20252612 AMAQI
19th Jul 2025291 AMAQI
19th Jul 2025292 AMAQI
19th Jul 2025293 AMAQI
19th Jul 2025334 AMAQI
21°C17/26°C
19th Jul 2025345 AMAQI
19th Jul 2025336 AMAQI
19th Jul 2025337 AMAQI
19th Jul 2025348 AMAQI
19th Jul 2025359 AMAQI
19th Jul 20253710 AMAQI
19th Jul 20253911 AMAQI
19th Jul 20254012 PMAQI
19th Jul 2025401 PMAQI
19th Jul 2025402 PMAQI
19th Jul 2025413 PMAQI
19th Jul 2025414 PMAQI
19th Jul 2025405 PMAQI
19th Jul 2025396 PMAQI
19th Jul 2025367 PMAQI
19th Jul 2025378 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20253810 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025361 AMAQI
20th Jul 2025362 AMAQI
20th Jul 2025373 AMAQI
20th Jul 2025404 AMAQI
22°C17/30°C
20th Jul 2025395 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025447 AMAQI
20th Jul 2025458 AMAQI
20th Jul 2025479 AMAQI
20th Jul 20254710 AMAQI
20th Jul 20254911 AMAQI
20th Jul 20255012 PMAQI
20th Jul 2025501 PMAQI
20th Jul 2025502 PMAQI
20th Jul 2025473 PMAQI
20th Jul 2025464 PMAQI
20th Jul 2025465 PMAQI
20th Jul 2025436 PMAQI
20th Jul 2025447 PMAQI
20th Jul 2025438 PMAQI
20th Jul 2025409 PMAQI
20th Jul 20253810 PMAQI
20th Jul 20253811 PMAQI
21st Jul 20253812 AMAQI
21st Jul 2025371 AMAQI
21st Jul 2025372 AMAQI
21st Jul 2025363 AMAQI
21st Jul 2025334 AMAQI
21°C16/28°C
21st Jul 2025325 AMAQI
21st Jul 2025326 AMAQI
21st Jul 2025347 AMAQI
21st Jul 2025348 AMAQI
21st Jul 2025349 AMAQI
21st Jul 20253510 AMAQI
21st Jul 20253711 AMAQI
21st Jul 20253812 PMAQI
21st Jul 2025411 PMAQI
21st Jul 2025402 PMAQI
21st Jul 2025393 PMAQI
21st Jul 2025384 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025376 PMAQI
21st Jul 2025377 PMAQI
21st Jul 2025358 PMAQI
21st Jul 2025349 PMAQI
21st Jul 20253110 PMAQI
21st Jul 20253111 PMAQI
22nd Jul 20253012 AMAQI
22nd Jul 2025281 AMAQI
22nd Jul 2025282 AMAQI
22nd Jul 2025273 AMAQI
22nd Jul 2025234 AMAQI
20°C16/26°C
22nd Jul 2025225 AMAQI
22nd Jul 2025246 AMAQI
22nd Jul 2025267 AMAQI
22nd Jul 2025258 AMAQI
22nd Jul 2025269 AMAQI
22nd Jul 20252410 AMAQI
22nd Jul 20252511 AMAQI
22nd Jul 20252612 PMAQI
22nd Jul 2025251 PMAQI
22nd Jul 2025272 PMAQI
22nd Jul 2025273 PMAQI
22nd Jul 2025284 PMAQI
22nd Jul 2025285 PMAQI
22nd Jul 2025276 PMAQI
22nd Jul 2025257 PMAQI
22nd Jul 2025258 PMAQI
22nd Jul 2025249 PMAQI
22nd Jul 20252410 PMAQI
22nd Jul 20252311 PMAQI
23rd Jul 20252312 AMAQI
23rd Jul 2025231 AMAQI
23rd Jul 2025222 AMAQI
23rd Jul 2025233 AMAQI
23rd Jul 2025214 AMAQI
20°C18/26°C
23rd Jul 2025225 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025227 AMAQI
23rd Jul 2025238 AMAQI
23rd Jul 2025239 AMAQI
23rd Jul 20252410 AMAQI
23rd Jul 20252411 AMAQI
23rd Jul 20252412 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025262 PMAQI
23rd Jul 2025253 PMAQI
23rd Jul 2025254 PMAQI
23rd Jul 2025265 PMAQI
23rd Jul 2025266 PMAQI
23rd Jul 2025247 PMAQI
23rd Jul 2025238 PMAQI
23rd Jul 2025249 PMAQI
23rd Jul 20252510 PMAQI
23rd Jul 20252511 PMAQI
24th Jul 20252612 AMAQI
24th Jul 2025251 AMAQI
24th Jul 2025252 AMAQI
24th Jul 2025253 AMAQI
24th Jul 2025254 AMAQI
23°C17/31°C
24th Jul 2025255 AMAQI
24th Jul 2025266 AMAQI
24th Jul 2025267 AMAQI
24th Jul 2025278 AMAQI
24th Jul 2025289 AMAQI
24th Jul 20253010 AMAQI
24th Jul 20253111 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025331 PMAQI
24th Jul 2025302 PMAQI
24th Jul 2025353 PMAQI
24th Jul 2025384 PMAQI
24th Jul 2025365 PMAQI
24th Jul 2025316 PMAQI
24th Jul 2025277 PMAQI
24th Jul 2025268 PMAQI
24th Jul 2025249 PMAQI
24th Jul 20252310 PMAQI
24th Jul 20252311 PMAQI
25th Jul 20252312 AMAQI
25th Jul 2025231 AMAQI
25th Jul 2025232 AMAQI
25th Jul 2025223 AMAQI
25th Jul 2025204 AMAQI
22°C16/30°C
25th Jul 2025215 AMAQI
25th Jul 2025226 AMAQI
25th Jul 2025237 AMAQI
25th Jul 2025238 AMAQI
25th Jul 2025239 AMAQI
25th Jul 20252410 AMAQI
25th Jul 20252411 AMAQI
25th Jul 20252412 PMAQI
25th Jul 2025251 PMAQI
25th Jul 2025252 PMAQI
25th Jul 2025243 PMAQI
25th Jul 2025234 PMAQI
25th Jul 2025245 PMAQI
25th Jul 2025226 PMAQI
25th Jul 2025227 PMAQI
25th Jul 2025238 PMAQI
25th Jul 2025229 PMAQI
25th Jul 20252110 PMAQI
25th Jul 20252111 PMAQI
26th Jul 20252012 AMAQI
26th Jul 2025211 AMAQI
26th Jul 2025212 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025204 AMAQI
20°C15/28°C
26th Jul 2025205 AMAQI
26th Jul 2025206 AMAQI
26th Jul 2025207 AMAQI
26th Jul 2025228 AMAQI
26th Jul 2025229 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252211 AMAQI
26th Jul 20252112 PMAQI
26th Jul 2025221 PMAQI
26th Jul 2025222 PMAQI
26th Jul 2025233 PMAQI
26th Jul 2025224 PMAQI
26th Jul 2025215 PMAQI
26th Jul 2025216 PMAQI
26th Jul 2025227 PMAQI
26th Jul 2025228 PMAQI
26th Jul 2025219 PMAQI
26th Jul 20252110 PMAQI
26th Jul 20252311 PMAQI
27th Jul 20252212 AMAQI
27th Jul 2025201 AMAQI
27th Jul 2025212 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025184 AMAQI
21°C15/29°C
27th Jul 2025195 AMAQI
27th Jul 2025206 AMAQI
27th Jul 2025227 AMAQI
27th Jul 2025228 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252310 AMAQI
27th Jul 20252511 AMAQI
27th Jul 20252512 PMAQI
27th Jul 2025261 PMAQI
27th Jul 2025272 PMAQI
27th Jul 2025273 PMAQI
27th Jul 2025264 PMAQI
27th Jul 2025275 PMAQI
27th Jul 2025266 PMAQI
27th Jul 2025247 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025239 PMAQI
27th Jul 20252210 PMAQI
27th Jul 20252311 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025243 AMAQI
28th Jul 2025234 AMAQI
21°C15/29°C
28th Jul 2025245 AMAQI
28th Jul 2025256 AMAQI
28th Jul 2025267 AMAQI
28th Jul 2025268 AMAQI
28th Jul 2025279 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20252911 AMAQI
28th Jul 20253112 PMAQI
28th Jul 2025331 PMAQI
28th Jul 2025322 PMAQI
28th Jul 2025303 PMAQI
28th Jul 2025304 PMAQI
28th Jul 2025305 PMAQI
28th Jul 2025296 PMAQI
28th Jul 2025277 PMAQI
28th Jul 2025278 PMAQI
28th Jul 2025279 PMAQI
28th Jul 20252610 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20252612 AMAQI
29th Jul 2025261 AMAQI
29th Jul 2025262 AMAQI
29th Jul 2025273 AMAQI
29th Jul 2025284 AMAQI
21°C16/29°C
29th Jul 2025305 AMAQI
29th Jul 2025306 AMAQI
29th Jul 2025337 AMAQI
29th Jul 2025368 AMAQI
29th Jul 2025389 AMAQI
29th Jul 20253910 AMAQI
29th Jul 20254111 AMAQI
29th Jul 20254312 PMAQI
29th Jul 2025431 PMAQI
29th Jul 2025432 PMAQI
29th Jul 2025413 PMAQI
29th Jul 2025404 PMAQI
29th Jul 2025395 PMAQI
29th Jul 2025396 PMAQI
29th Jul 2025357 PMAQI
29th Jul 2025348 PMAQI
29th Jul 2025339 PMAQI
29th Jul 20253510 PMAQI
29th Jul 20253411 PMAQI
30th Jul 20253412 AMAQI
30th Jul 2025341 AMAQI
30th Jul 2025362 AMAQI
30th Jul 2025363 AMAQI
30th Jul 2025404 AMAQI
23°C16/32°C
30th Jul 2025395 AMAQI
5 AM30th Jul 2025386 AMAQI
30th Jul 2025407 AMAQI
30th Jul 2025418 AMAQI
30th Jul 2025409 AMAQI
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
39AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
39AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 39), while the lowest AQI was between 5 AM to 7 PM (Avg. 39).
Night time
Avg. Highest Time
8 PM - 11 PM
36AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM
34AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 36), while the lowest AQI was between 4 AM to 4 AM (Avg. 34).
2025 Days Vs Air Quality
El Cajon, California, United States
2025
79%
165
21%
45
Total number of days with different AQI categories in last 211 days in 2025 (154 days remaining)
Good
165 DaysModerate
45 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2025, 79% of 211 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
El Cajon, California, United States
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
90AQI
90AQI
2nd January 2025
68AQI
68AQI
3rd January 2025
64AQI
64AQI
4th January 2025
62AQI
62AQI
5th January 2025
54AQI
54AQI
6th January 2025
46AQI
46AQI
7th January 2025
47AQI
47AQI
8th January 2025
49AQI
49AQI
9th January 2025
43AQI
43AQI
10th January 2025
36AQI
36AQI
11th January 2025
48AQI
48AQI
12th January 2025
50AQI
50AQI
13th January 2025
40AQI
40AQI
14th January 2025
36AQI
36AQI
15th January 2025
37AQI
37AQI
16th January 2025
42AQI
42AQI
17th January 2025
40AQI
40AQI
18th January 2025
48AQI
48AQI
19th January 2025
60AQI
60AQI
20th January 2025
55AQI
55AQI
21st January 2025
43AQI
43AQI
22nd January 2025
43AQI
43AQI
23rd January 2025
39AQI
39AQI
24th January 2025
52AQI
52AQI
25th January 2025
71AQI
71AQI
26th January 2025
31AQI
31AQI
27th January 2025
31AQI
31AQI
28th January 2025
39AQI
39AQI
29th January 2025
39AQI
39AQI
30th January 2025
45AQI
45AQI
31st January 2025
54AQI
54AQI
1st February 2025
66AQI
66AQI
2nd February 2025
58AQI
58AQI
3rd February 2025
48AQI
48AQI
4th February 2025
58AQI
58AQI
5th February 2025
35AQI
35AQI
6th February 2025
28AQI
28AQI
7th February 2025
26AQI
26AQI
8th February 2025
28AQI
28AQI
9th February 2025
42AQI
42AQI
10th February 2025
45AQI
45AQI
11th February 2025
33AQI
33AQI
12th February 2025
36AQI
36AQI
13th February 2025
25AQI
25AQI
14th February 2025
32AQI
32AQI
15th February 2025
31AQI
31AQI
16th February 2025
38AQI
38AQI
17th February 2025
44AQI
44AQI
18th February 2025
50AQI
50AQI
19th February 2025
46AQI
46AQI
20th February 2025
49AQI
49AQI
21st February 2025
45AQI
45AQI
22nd February 2025
46AQI
46AQI
23rd February 2025
42AQI
42AQI
24th February 2025
39AQI
39AQI
25th February 2025
48AQI
48AQI
26th February 2025
55AQI
55AQI
27th February 2025
49AQI
49AQI
28th February 2025
34AQI
34AQI
1st March 2025
34AQI
34AQI
2nd March 2025
37AQI
37AQI
3rd March 2025
32AQI
32AQI
4th March 2025
32AQI
32AQI
5th March 2025
40AQI
40AQI
6th March 2025
33AQI
33AQI
7th March 2025
31AQI
31AQI
8th March 2025
31AQI
31AQI
9th March 2025
37AQI
37AQI
10th March 2025
35AQI
35AQI
11th March 2025
33AQI
33AQI
12th March 2025
28AQI
28AQI
13th March 2025
22AQI
22AQI
14th March 2025
19AQI
19AQI
15th March 2025
26AQI
26AQI
16th March 2025
36AQI
36AQI
17th March 2025
50AQI
50AQI
18th March 2025
28AQI
28AQI
19th March 2025
24AQI
24AQI
20th March 2025
23AQI
23AQI
21st March 2025
33AQI
33AQI
22nd March 2025
42AQI
42AQI
23rd March 2025
56AQI
56AQI
24th March 2025
54AQI
54AQI
25th March 2025
57AQI
57AQI
26th March 2025
31AQI
31AQI
27th March 2025
20AQI
20AQI
28th March 2025
27AQI
27AQI
29th March 2025
39AQI
39AQI
30th March 2025
39AQI
39AQI
31st March 2025
22AQI
22AQI
1st April 2025
24AQI
24AQI
2nd April 2025
31AQI
31AQI
3rd April 2025
29AQI
29AQI
4th April 2025
21AQI
21AQI
5th April 2025
23AQI
23AQI
6th April 2025
25AQI
25AQI
7th April 2025
25AQI
25AQI
8th April 2025
37AQI
37AQI
9th April 2025
39AQI
39AQI
10th April 2025
40AQI
40AQI
11th April 2025
48AQI
48AQI
12th April 2025
53AQI
53AQI
13th April 2025
53AQI
53AQI
14th April 2025
53AQI
53AQI
15th April 2025
41AQI
41AQI
16th April 2025
33AQI
33AQI
17th April 2025
23AQI
23AQI
18th April 2025
23AQI
23AQI
19th April 2025
28AQI
28AQI
20th April 2025
36AQI
36AQI
21st April 2025
47AQI
47AQI
22nd April 2025
50AQI
50AQI
23rd April 2025
41AQI
41AQI
24th April 2025
38AQI
38AQI
25th April 2025
35AQI
35AQI
26th April 2025
21AQI
21AQI
27th April 2025
23AQI
23AQI
28th April 2025
21AQI
21AQI
29th April 2025
37AQI
37AQI
30th April 2025
49AQI
49AQI
1st May 2025
45AQI
45AQI
2nd May 2025
28AQI
28AQI
3rd May 2025
35AQI
35AQI
4th May 2025
27AQI
27AQI
5th May 2025
26AQI
26AQI
6th May 2025
36AQI
36AQI
7th May 2025
42AQI
42AQI
8th May 2025
45AQI
45AQI
9th May 2025
48AQI
48AQI
10th May 2025
45AQI
45AQI
11th May 2025
49AQI
49AQI
12th May 2025
52AQI
52AQI
13th May 2025
28AQI
28AQI
14th May 2025
30AQI
30AQI
15th May 2025
47AQI
47AQI
16th May 2025
52AQI
52AQI
17th May 2025
42AQI
42AQI
18th May 2025
26AQI
26AQI
19th May 2025
38AQI
38AQI
20th May 2025
46AQI
46AQI
21st May 2025
49AQI
49AQI
22nd May 2025
56AQI
56AQI
23rd May 2025
59AQI
59AQI
24th May 2025
56AQI
56AQI
25th May 2025
49AQI
49AQI
26th May 2025
47AQI
47AQI
27th May 2025
45AQI
45AQI
28th May 2025
40AQI
40AQI
29th May 2025
38AQI
38AQI
30th May 2025
45AQI
45AQI
31st May 2025
54AQI
54AQI
1st June 2025
47AQI
47AQI
2nd June 2025
41AQI
41AQI
3rd June 2025
31AQI
31AQI
4th June 2025
26AQI
26AQI
5th June 2025
26AQI
26AQI
6th June 2025
24AQI
24AQI
7th June 2025
28AQI
28AQI
8th June 2025
32AQI
32AQI
9th June 2025
42AQI
42AQI
10th June 2025
45AQI
45AQI
11th June 2025
46AQI
46AQI
12th June 2025
50AQI
50AQI
13th June 2025
58AQI
58AQI
14th June 2025
54AQI
54AQI
15th June 2025
53AQI
53AQI
16th June 2025
57AQI
57AQI
17th June 2025
60AQI
60AQI
18th June 2025
62AQI
62AQI
19th June 2025
59AQI
59AQI
20th June 2025
55AQI
55AQI
21st June 2025
61AQI
61AQI
22nd June 2025
61AQI
61AQI
23rd June 2025
57AQI
57AQI
24th June 2025
59AQI
59AQI
25th June 2025
53AQI
53AQI
26th June 2025
49AQI
49AQI
27th June 2025
49AQI
49AQI
28th June 2025
46AQI
46AQI
29th June 2025
45AQI
45AQI
30th June 2025
36AQI
36AQI
1st July 2025
38AQI
38AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
38AQI
38AQI
4th July 2025
40AQI
40AQI
5th July 2025
58AQI
58AQI
6th July 2025
53AQI
53AQI
7th July 2025
55AQI
55AQI
8th July 2025
55AQI
55AQI
9th July 2025
46AQI
46AQI
10th July 2025
43AQI
43AQI
11th July 2025
55AQI
55AQI
12th July 2025
53AQI
53AQI
13th July 2025
46AQI
46AQI
14th July 2025
40AQI
40AQI
15th July 2025
35AQI
35AQI
16th July 2025
31AQI
31AQI
17th July 2025
24AQI
24AQI
18th July 2025
24AQI
24AQI
19th July 2025
35AQI
35AQI
20th July 2025
42AQI
42AQI
21st July 2025
36AQI
36AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
24AQI
24AQI
24th July 2025
28AQI
28AQI
25th July 2025
23AQI
23AQI
26th July 2025
21AQI
21AQI
27th July 2025
23AQI
23AQI
28th July 2025
27AQI
27AQI
29th July 2025
32AQI
32AQI
48AQI
42AQI
34AQI
35AQI
43AQI
47AQI
38AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202541AQI
21
10
24
4
28
3
27
3
25
6
17
13
23
6
165
45
Highest AQI recorded in
January48AQI
Lowest AQI recorded in
March34AQI
202441AQI
27
4
28
1
31
28
2
25
6
24
5
29
2
25
6
20
10
19
12
28
2
14
17
298
67
Highest AQI recorded in
December53AQI
Lowest AQI recorded in
March31AQI
202348AQI
22
3
1
5
23
2
3
28
1
2
16
14
28
3
30
20
11
27
4
23
7
27
4
25
4
21
10
290
62
2
10
Highest AQI recorded in
January82AQI
Lowest AQI recorded in
May37AQI
202278AQI
20
10
20
2
28
3
16
7
1
6
13
11
2
5
3
10
1
2
14
17
5
1
1
2
17
5
1
1
5
19
5
2
5
24
6
16
8
1
1
5
195
72
8
5
41
Highest AQI recorded in
June169AQI
Lowest AQI recorded in
March40AQI
202144AQI
16
12
21
7
30
1
23
7
29
2
30
28
3
18
13
24
6
27
4
19
11
15
16
280
82
Highest AQI recorded in
December51AQI
Lowest AQI recorded in
March35AQI
202047AQI
13
20
18
27
3
17
14
19
12
6
20
4
8
22
1
11
19
14
17
153
107
5
Highest AQI recorded in
September63AQI
Lowest AQI recorded in
May27AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
78AQILeast Polluted Year Recorded
2025(Avg.)
41AQIEl Cajon's annual 2025 AQI (41) shows an average percentage change of -16.6% (improved AQI) compared to previous years: 2020 (47), 2021 (44), 2022 (78), 2023 (48), 2024 (41).
