Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

San Diego, 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

San Diego, California, United States

2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Jul 2025
58AQI
Lowest AQI recorded on
1st Jul 2026
21AQI

Same Day Analysis (12th July):
On this day, AQI across the 2 years varied significantly: 2026 ranks 2nd highest AQI at 26 of Good air quality, showing improvement over 2025 on the same day.

Day & Night AQI Trend: 12th Jul - 13th Jul 2026

San Diego, California, United States

AQI
Day
Night
.

5 AM12th Jul 2026

7 PM

4 AM13th Jul 2026

Day time
Avg. Highest Time
1PM12th Jul

40AQI

Avg. Lowest Time
7AM12th Jul

17AQI

Night time
Avg. Highest Time
1AM13th Jul

42AQI

Avg. Lowest Time
10PM12th Jul

23AQI

In the last 24 hours,

San Diego's AQI reached its highest point of 42 at 1 AM during the Night, while the lowest point, 17, was recorded at 7 AM during the Day between 12th Jul and 13th Jul 2026.

Day & Night AQI Trend : Jun - Jul 2026

San Diego, California, United States

JunJul
14th - 15th15th - 16th16th - 17th17th - 18th18th - 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
Day
Night
14th Jun 2026125 AMAQI
14th Jun 2026126 AMAQI
14th Jun 2026187 AMAQI
14th Jun 2026258 AMAQI
14th Jun 2026319 AMAQI
14th Jun 20261710 AMAQI
14th Jun 20261811 AMAQI
14th Jun 20261812 PMAQI
14th Jun 2026171 PMAQI
14th Jun 2026172 PMAQI
14th Jun 2026173 PMAQI
14th Jun 2026164 PMAQI
14th Jun 2026175 PMAQI
14th Jun 2026176 PMAQI
14th Jun 2026217 PMAQI
14th Jun 2026278 PMAQI
14th Jun 2026229 PMAQI
14th Jun 20262010 PMAQI
14th Jun 20262011 PMAQI
15th Jun 20262012 AMAQI
15th Jun 2026211 AMAQI
15th Jun 2026212 AMAQI
15th Jun 2026183 AMAQI
15th Jun 2026274 AMAQI

21°C18/29°C

15th Jun 2026185 AMAQI
15th Jun 2026206 AMAQI
15th Jun 2026177 AMAQI
15th Jun 2026178 AMAQI
15th Jun 2026199 AMAQI
15th Jun 20262010 AMAQI
15th Jun 20262211 AMAQI
15th Jun 20262412 PMAQI
15th Jun 2026271 PMAQI
15th Jun 2026272 PMAQI
15th Jun 2026253 PMAQI
15th Jun 2026294 PMAQI
15th Jun 2026235 PMAQI
15th Jun 2026216 PMAQI
15th Jun 2026217 PMAQI
15th Jun 2026198 PMAQI
15th Jun 2026209 PMAQI
15th Jun 20261810 PMAQI
15th Jun 20261911 PMAQI
16th Jun 20261812 AMAQI
16th Jun 2026221 AMAQI
16th Jun 2026182 AMAQI
16th Jun 2026183 AMAQI
16th Jun 2026184 AMAQI

21°C18/25°C

16th Jun 2026185 AMAQI
16th Jun 2026196 AMAQI
16th Jun 2026197 AMAQI
16th Jun 2026228 AMAQI
16th Jun 2026209 AMAQI
16th Jun 20262110 AMAQI
16th Jun 20262611 AMAQI
16th Jun 20262912 PMAQI
16th Jun 2026331 PMAQI
16th Jun 2026322 PMAQI
16th Jun 2026313 PMAQI
16th Jun 2026314 PMAQI
16th Jun 2026315 PMAQI
16th Jun 2026216 PMAQI
16th Jun 2026197 PMAQI
16th Jun 2026208 PMAQI
16th Jun 2026329 PMAQI
16th Jun 20261710 PMAQI
16th Jun 20261911 PMAQI
17th Jun 20261612 AMAQI
17th Jun 2026161 AMAQI
17th Jun 2026162 AMAQI
17th Jun 2026353 AMAQI
17th Jun 2026544 AMAQI

20°C18/24°C

17th Jun 2026365 AMAQI
17th Jun 2026406 AMAQI
17th Jun 2026367 AMAQI
17th Jun 2026208 AMAQI
17th Jun 2026169 AMAQI
17th Jun 20261910 AMAQI
17th Jun 20262311 AMAQI
17th Jun 20262312 PMAQI
17th Jun 2026211 PMAQI
17th Jun 2026262 PMAQI
17th Jun 2026243 PMAQI
17th Jun 2026204 PMAQI
17th Jun 2026205 PMAQI
17th Jun 2026186 PMAQI
17th Jun 2026167 PMAQI
17th Jun 2026158 PMAQI
17th Jun 2026179 PMAQI
17th Jun 20261910 PMAQI
17th Jun 20262911 PMAQI
18th Jun 20261512 AMAQI
18th Jun 2026121 AMAQI
18th Jun 2026252 AMAQI
18th Jun 2026333 AMAQI
18th Jun 2026274 AMAQI

20°C18/24°C

18th Jun 2026155 AMAQI
18th Jun 2026146 AMAQI
18th Jun 2026277 AMAQI
18th Jun 2026168 AMAQI
18th Jun 2026319 AMAQI
18th Jun 20262910 AMAQI
18th Jun 20261711 AMAQI
18th Jun 20261512 PMAQI
18th Jun 2026151 PMAQI
18th Jun 2026172 PMAQI
18th Jun 2026173 PMAQI
18th Jun 2026154 PMAQI
18th Jun 2026175 PMAQI
18th Jun 2026156 PMAQI
18th Jun 2026147 PMAQI
18th Jun 2026188 PMAQI
18th Jun 2026249 PMAQI
18th Jun 20264410 PMAQI
18th Jun 2026911 PMAQI
19th Jun 20263112 AMAQI
19th Jun 2026241 AMAQI
19th Jun 2026602 AMAQI
19th Jun 2026363 AMAQI
19th Jun 2026444 AMAQI

19°C17/23°C

19th Jun 2026455 AMAQI
19th Jun 2026106 AMAQI
19th Jun 2026137 AMAQI
19th Jun 202698 AMAQI
19th Jun 2026159 AMAQI
19th Jun 20262010 AMAQI
19th Jun 20261011 AMAQI
19th Jun 20261112 PMAQI
19th Jun 2026131 PMAQI
19th Jun 2026142 PMAQI
19th Jun 2026143 PMAQI
19th Jun 2026134 PMAQI
19th Jun 2026395 PMAQI
19th Jun 2026466 PMAQI
19th Jun 2026447 PMAQI
19th Jun 2026178 PMAQI
19th Jun 202699 PMAQI
19th Jun 20261010 PMAQI
19th Jun 20263211 PMAQI
20th Jun 2026912 AMAQI
20th Jun 2026101 AMAQI
20th Jun 2026112 AMAQI
20th Jun 2026113 AMAQI
20th Jun 2026444 AMAQI

19°C17/23°C

20th Jun 2026465 AMAQI
20th Jun 2026106 AMAQI
20th Jun 2026107 AMAQI
20th Jun 2026388 AMAQI
20th Jun 2026119 AMAQI
20th Jun 20261110 AMAQI
20th Jun 20261111 AMAQI
20th Jun 20261112 PMAQI
20th Jun 2026132 PMAQI
20th Jun 2026133 PMAQI
20th Jun 2026134 PMAQI
20th Jun 2026175 PMAQI
20th Jun 2026236 PMAQI
20th Jun 2026337 PMAQI
20th Jun 2026108 PMAQI
20th Jun 2026339 PMAQI
20th Jun 20262910 PMAQI
20th Jun 20263111 PMAQI
21st Jun 20263112 AMAQI
21st Jun 2026421 AMAQI
21st Jun 2026242 AMAQI
21st Jun 2026113 AMAQI
21st Jun 2026544 AMAQI

19°C17/23°C

21st Jun 2026115 AMAQI
21st Jun 2026106 AMAQI
21st Jun 2026187 AMAQI
21st Jun 2026418 AMAQI
21st Jun 2026289 AMAQI
21st Jun 20265610 AMAQI
21st Jun 20264611 AMAQI
21st Jun 20261212 PMAQI
21st Jun 2026341 PMAQI
21st Jun 2026352 PMAQI
21st Jun 2026293 PMAQI
21st Jun 2026324 PMAQI
21st Jun 2026115 PMAQI
21st Jun 2026316 PMAQI
21st Jun 2026317 PMAQI
21st Jun 2026338 PMAQI
21st Jun 2026149 PMAQI
21st Jun 20261710 PMAQI
21st Jun 2026911 PMAQI
22nd Jun 20262012 AMAQI
22nd Jun 2026381 AMAQI
22nd Jun 2026262 AMAQI
22nd Jun 2026173 AMAQI
22nd Jun 2026294 AMAQI

19°C15/23°C

22nd Jun 2026115 AMAQI
22nd Jun 2026306 AMAQI
22nd Jun 2026157 AMAQI
22nd Jun 2026408 AMAQI
22nd Jun 2026219 AMAQI
22nd Jun 20261410 AMAQI
22nd Jun 20261511 AMAQI
22nd Jun 20261612 PMAQI
22nd Jun 2026191 PMAQI
22nd Jun 2026212 PMAQI
22nd Jun 2026173 PMAQI
22nd Jun 2026174 PMAQI
22nd Jun 2026275 PMAQI
22nd Jun 2026366 PMAQI
22nd Jun 2026157 PMAQI
22nd Jun 2026218 PMAQI
22nd Jun 2026239 PMAQI
22nd Jun 20261410 PMAQI
22nd Jun 20261311 PMAQI
23rd Jun 20261612 AMAQI
23rd Jun 2026211 AMAQI
23rd Jun 2026402 AMAQI
23rd Jun 2026303 AMAQI
23rd Jun 2026344 AMAQI

19°C17/24°C

23rd Jun 2026265 AMAQI
23rd Jun 2026396 AMAQI
23rd Jun 2026547 AMAQI
23rd Jun 2026228 AMAQI
23rd Jun 2026189 AMAQI
23rd Jun 20262210 AMAQI
23rd Jun 20262511 AMAQI
23rd Jun 20263812 PMAQI
23rd Jun 2026281 PMAQI
23rd Jun 2026522 PMAQI
23rd Jun 2026513 PMAQI
23rd Jun 2026214 PMAQI
23rd Jun 2026295 PMAQI
23rd Jun 2026326 PMAQI
23rd Jun 2026447 PMAQI
23rd Jun 2026528 PMAQI
23rd Jun 2026349 PMAQI
23rd Jun 20263310 PMAQI
23rd Jun 20263311 PMAQI
24th Jun 20261412 AMAQI
24th Jun 2026321 AMAQI
24th Jun 2026272 AMAQI
24th Jun 2026353 AMAQI
24th Jun 2026384 AMAQI

20°C17/25°C

24th Jun 2026395 AMAQI
24th Jun 2026406 AMAQI
24th Jun 2026347 AMAQI
24th Jun 2026158 AMAQI
24th Jun 2026299 AMAQI
24th Jun 20261910 AMAQI
24th Jun 20262111 AMAQI
24th Jun 20262112 PMAQI
24th Jun 2026241 PMAQI
24th Jun 2026232 PMAQI
24th Jun 2026223 PMAQI
24th Jun 2026244 PMAQI
24th Jun 2026235 PMAQI
24th Jun 2026206 PMAQI
24th Jun 2026227 PMAQI
24th Jun 2026198 PMAQI
24th Jun 2026229 PMAQI
24th Jun 20263310 PMAQI
24th Jun 20261911 PMAQI
25th Jun 20261712 AMAQI
25th Jun 2026221 AMAQI
25th Jun 2026412 AMAQI
25th Jun 2026153 AMAQI
25th Jun 2026184 AMAQI

20°C17/26°C

25th Jun 2026375 AMAQI
25th Jun 2026156 AMAQI
25th Jun 2026157 AMAQI
25th Jun 2026178 AMAQI
25th Jun 2026179 AMAQI
25th Jun 20262010 AMAQI
25th Jun 20261911 AMAQI
25th Jun 20262712 PMAQI
25th Jun 2026191 PMAQI
25th Jun 2026192 PMAQI
25th Jun 2026193 PMAQI
25th Jun 2026194 PMAQI
25th Jun 2026175 PMAQI
25th Jun 2026316 PMAQI
25th Jun 2026177 PMAQI
25th Jun 2026158 PMAQI
25th Jun 2026229 PMAQI
25th Jun 20262610 PMAQI
25th Jun 20261211 PMAQI
26th Jun 20261212 AMAQI
26th Jun 2026121 AMAQI
26th Jun 2026122 AMAQI
26th Jun 2026123 AMAQI
26th Jun 2026424 AMAQI

20°C17/25°C

26th Jun 2026805 AMAQI
26th Jun 2026196 AMAQI
26th Jun 2026127 AMAQI
26th Jun 2026148 AMAQI
26th Jun 2026349 AMAQI
26th Jun 20262010 AMAQI
26th Jun 20261711 AMAQI
26th Jun 20261712 PMAQI
26th Jun 2026221 PMAQI
26th Jun 2026202 PMAQI
26th Jun 2026183 PMAQI
26th Jun 2026244 PMAQI
26th Jun 2026165 PMAQI
26th Jun 2026166 PMAQI
26th Jun 2026197 PMAQI
26th Jun 2026208 PMAQI
26th Jun 2026229 PMAQI
26th Jun 20263610 PMAQI
26th Jun 20262711 PMAQI
27th Jun 20261312 AMAQI
27th Jun 2026501 AMAQI
27th Jun 2026102 AMAQI
27th Jun 2026173 AMAQI
27th Jun 2026274 AMAQI

19°C17/23°C

27th Jun 2026165 AMAQI
27th Jun 2026246 AMAQI
27th Jun 2026307 AMAQI
27th Jun 2026188 AMAQI
27th Jun 2026369 AMAQI
27th Jun 20262110 AMAQI
27th Jun 20261511 AMAQI
27th Jun 20262012 PMAQI
27th Jun 2026181 PMAQI
27th Jun 2026282 PMAQI
27th Jun 2026193 PMAQI
27th Jun 2026124 PMAQI
27th Jun 2026515 PMAQI
27th Jun 2026126 PMAQI
27th Jun 2026177 PMAQI
27th Jun 2026148 PMAQI
27th Jun 2026149 PMAQI
27th Jun 20261710 PMAQI
27th Jun 20263211 PMAQI
28th Jun 20261612 AMAQI
28th Jun 2026121 AMAQI
28th Jun 2026172 AMAQI
28th Jun 2026193 AMAQI
28th Jun 2026234 AMAQI

19°C17/21°C

28th Jun 2026105 AMAQI
28th Jun 2026136 AMAQI
28th Jun 2026137 AMAQI
28th Jun 2026168 AMAQI
28th Jun 202699 AMAQI
28th Jun 20261010 AMAQI
28th Jun 20261411 AMAQI
28th Jun 20261212 PMAQI
28th Jun 2026181 PMAQI
28th Jun 2026152 PMAQI
28th Jun 2026153 PMAQI
28th Jun 2026224 PMAQI
28th Jun 2026245 PMAQI
28th Jun 2026186 PMAQI
28th Jun 2026197 PMAQI
28th Jun 2026208 PMAQI
28th Jun 2026209 PMAQI
28th Jun 20261810 PMAQI
28th Jun 20261711 PMAQI
29th Jun 20261712 AMAQI
29th Jun 2026271 AMAQI
29th Jun 2026182 AMAQI
29th Jun 2026223 AMAQI
29th Jun 2026174 AMAQI

19°C17/22°C

29th Jun 2026305 AMAQI
29th Jun 2026156 AMAQI
29th Jun 2026167 AMAQI
29th Jun 2026178 AMAQI
29th Jun 2026209 AMAQI
29th Jun 20262010 AMAQI
29th Jun 20262511 AMAQI
29th Jun 20262412 PMAQI
29th Jun 2026231 PMAQI
29th Jun 2026202 PMAQI
29th Jun 2026223 PMAQI
29th Jun 2026214 PMAQI
29th Jun 2026205 PMAQI
29th Jun 2026216 PMAQI
29th Jun 2026217 PMAQI
29th Jun 2026218 PMAQI
29th Jun 2026249 PMAQI
29th Jun 20262410 PMAQI
29th Jun 20263211 PMAQI
30th Jun 20263912 AMAQI
30th Jun 2026341 AMAQI
30th Jun 2026222 AMAQI
30th Jun 2026333 AMAQI
30th Jun 2026424 AMAQI

19°C17/22°C

30th Jun 2026245 AMAQI
30th Jun 2026226 AMAQI
30th Jun 2026217 AMAQI
30th Jun 2026178 AMAQI
30th Jun 2026239 AMAQI
30th Jun 20262310 AMAQI
30th Jun 20263911 AMAQI
30th Jun 20262712 PMAQI
30th Jun 2026311 PMAQI
30th Jun 2026342 PMAQI
30th Jun 2026283 PMAQI
30th Jun 2026284 PMAQI
30th Jun 2026255 PMAQI
30th Jun 2026216 PMAQI
30th Jun 2026227 PMAQI
30th Jun 2026308 PMAQI
30th Jun 2026299 PMAQI
30th Jun 20261310 PMAQI
30th Jun 20261611 PMAQI
1st Jul 20262012 AMAQI
1st Jul 2026221 AMAQI
1st Jul 2026222 AMAQI
1st Jul 2026133 AMAQI
1st Jul 2026224 AMAQI

20°C17/24°C

1st Jul 2026125 AMAQI
1st Jul 2026176 AMAQI
1st Jul 2026157 AMAQI
1st Jul 2026178 AMAQI
1st Jul 2026159 AMAQI
1st Jul 20261510 AMAQI
1st Jul 20263511 AMAQI
1st Jul 20261912 PMAQI
1st Jul 2026231 PMAQI
1st Jul 2026272 PMAQI
1st Jul 2026233 PMAQI
1st Jul 2026224 PMAQI
1st Jul 2026185 PMAQI
1st Jul 2026266 PMAQI
1st Jul 2026397 PMAQI
1st Jul 2026238 PMAQI
1st Jul 2026219 PMAQI
1st Jul 20262210 PMAQI
1st Jul 20261511 PMAQI
2nd Jul 20261512 AMAQI
2nd Jul 2026161 AMAQI
2nd Jul 2026312 AMAQI
2nd Jul 2026453 AMAQI
2nd Jul 2026764 AMAQI

20°C17/24°C

2nd Jul 2026575 AMAQI
2nd Jul 2026776 AMAQI
2nd Jul 2026417 AMAQI
2nd Jul 2026398 AMAQI
2nd Jul 2026879 AMAQI
2nd Jul 20264410 AMAQI
2nd Jul 20263611 AMAQI
2nd Jul 20262212 PMAQI
2nd Jul 2026251 PMAQI
2nd Jul 2026262 PMAQI
2nd Jul 2026243 PMAQI
2nd Jul 2026224 PMAQI
2nd Jul 2026255 PMAQI
2nd Jul 2026296 PMAQI
2nd Jul 2026257 PMAQI
2nd Jul 2026198 PMAQI
2nd Jul 2026179 PMAQI
2nd Jul 20261410 PMAQI
2nd Jul 20262211 PMAQI
3rd Jul 20261912 AMAQI
3rd Jul 2026171 AMAQI
3rd Jul 2026192 AMAQI
3rd Jul 2026243 AMAQI
3rd Jul 2026414 AMAQI

20°C18/24°C

3rd Jul 2026225 AMAQI
3rd Jul 2026186 AMAQI
3rd Jul 2026277 AMAQI
3rd Jul 2026308 AMAQI
3rd Jul 2026219 AMAQI
3rd Jul 20262310 AMAQI
3rd Jul 20261911 AMAQI
3rd Jul 20262212 PMAQI
3rd Jul 2026221 PMAQI
3rd Jul 2026222 PMAQI
3rd Jul 2026223 PMAQI
3rd Jul 2026224 PMAQI
3rd Jul 2026255 PMAQI
3rd Jul 2026226 PMAQI
3rd Jul 2026227 PMAQI
3rd Jul 2026258 PMAQI
3rd Jul 2026199 PMAQI
3rd Jul 20261910 PMAQI
3rd Jul 20261911 PMAQI
4th Jul 20262012 AMAQI
4th Jul 2026181 AMAQI
4th Jul 2026192 AMAQI
4th Jul 2026243 AMAQI
4th Jul 2026184 AMAQI

21°C17/26°C

4th Jul 2026215 AMAQI
4th Jul 2026496 AMAQI
4th Jul 2026287 AMAQI
4th Jul 2026228 AMAQI
4th Jul 2026249 AMAQI
4th Jul 20262710 AMAQI
4th Jul 20262611 AMAQI
4th Jul 20262612 PMAQI
4th Jul 2026271 PMAQI
4th Jul 2026222 PMAQI
4th Jul 2026223 PMAQI
4th Jul 2026204 PMAQI
4th Jul 2026195 PMAQI
4th Jul 2026186 PMAQI
4th Jul 2026187 PMAQI
4th Jul 2026238 PMAQI
4th Jul 2026239 PMAQI
4th Jul 20262110 PMAQI
4th Jul 20262711 PMAQI
5th Jul 20265612 AMAQI
5th Jul 2026821 AMAQI
5th Jul 2026942 AMAQI
5th Jul 2026923 AMAQI
5th Jul 2026464 AMAQI

21°C16/30°C

5th Jul 2026245 AMAQI
5th Jul 2026266 AMAQI
5th Jul 2026177 AMAQI
5th Jul 2026218 AMAQI
5th Jul 2026159 AMAQI
5th Jul 20261610 AMAQI
5th Jul 20261611 AMAQI
5th Jul 20261612 PMAQI
5th Jul 2026421 PMAQI
5th Jul 2026482 PMAQI
5th Jul 2026533 PMAQI
5th Jul 2026514 PMAQI
5th Jul 2026475 PMAQI
5th Jul 2026346 PMAQI
5th Jul 2026227 PMAQI
5th Jul 2026188 PMAQI
5th Jul 2026169 PMAQI
5th Jul 20262510 PMAQI
5th Jul 20263111 PMAQI
6th Jul 20263612 AMAQI
6th Jul 2026381 AMAQI
6th Jul 2026292 AMAQI
6th Jul 2026293 AMAQI
6th Jul 2026234 AMAQI

21°C17/25°C

6th Jul 2026295 AMAQI
6th Jul 2026256 AMAQI
6th Jul 2026277 AMAQI
6th Jul 2026228 AMAQI
6th Jul 2026199 AMAQI
6th Jul 20261810 AMAQI
6th Jul 20261911 AMAQI
6th Jul 20262112 PMAQI
6th Jul 2026221 PMAQI
6th Jul 2026252 PMAQI
6th Jul 2026243 PMAQI
6th Jul 2026234 PMAQI
6th Jul 2026235 PMAQI
6th Jul 2026236 PMAQI
6th Jul 2026257 PMAQI
6th Jul 2026298 PMAQI
6th Jul 2026239 PMAQI
6th Jul 20262310 PMAQI
6th Jul 20262511 PMAQI
7th Jul 20264312 AMAQI
7th Jul 2026551 AMAQI
7th Jul 2026642 AMAQI
7th Jul 20261263 AMAQI
7th Jul 20261434 AMAQI

21°C17/28°C

7th Jul 20261495 AMAQI
7th Jul 20261406 AMAQI
7th Jul 2026977 AMAQI
7th Jul 2026658 AMAQI
7th Jul 2026509 AMAQI
7th Jul 20263210 AMAQI
7th Jul 20263411 AMAQI
7th Jul 20262912 PMAQI
7th Jul 2026281 PMAQI
7th Jul 2026282 PMAQI
7th Jul 2026293 PMAQI
7th Jul 2026284 PMAQI
7th Jul 2026275 PMAQI
7th Jul 2026306 PMAQI
7th Jul 2026317 PMAQI
7th Jul 2026318 PMAQI
7th Jul 2026269 PMAQI
7th Jul 20262910 PMAQI
7th Jul 20263111 PMAQI
8th Jul 20263112 AMAQI
8th Jul 2026301 AMAQI
8th Jul 2026312 AMAQI
8th Jul 2026403 AMAQI
8th Jul 2026274 AMAQI

21°C16/25°C

8th Jul 2026225 AMAQI
8th Jul 2026196 AMAQI
8th Jul 2026207 AMAQI
8th Jul 2026208 AMAQI
8th Jul 2026199 AMAQI
8th Jul 20262110 AMAQI
8th Jul 20262411 AMAQI
8th Jul 20262812 PMAQI
8th Jul 2026291 PMAQI
8th Jul 2026282 PMAQI
8th Jul 2026283 PMAQI
8th Jul 2026374 PMAQI
8th Jul 2026315 PMAQI
8th Jul 2026316 PMAQI
8th Jul 2026317 PMAQI
8th Jul 2026348 PMAQI
8th Jul 2026349 PMAQI
8th Jul 20263610 PMAQI
8th Jul 20264211 PMAQI
9th Jul 20264812 AMAQI
9th Jul 2026341 AMAQI
9th Jul 2026482 AMAQI
9th Jul 2026483 AMAQI
9th Jul 2026484 AMAQI

21°C18/29°C

9th Jul 2026375 AMAQI
9th Jul 2026256 AMAQI
9th Jul 2026297 AMAQI
9th Jul 2026288 AMAQI
9th Jul 2026289 AMAQI
9th Jul 20262910 AMAQI
9th Jul 20263111 AMAQI
9th Jul 20263412 PMAQI
9th Jul 2026371 PMAQI
9th Jul 2026382 PMAQI
9th Jul 2026403 PMAQI
9th Jul 2026384 PMAQI
9th Jul 2026345 PMAQI
9th Jul 2026326 PMAQI
9th Jul 2026287 PMAQI
9th Jul 2026268 PMAQI
9th Jul 2026299 PMAQI
9th Jul 20263010 PMAQI
9th Jul 20262611 PMAQI
10th Jul 20265012 AMAQI
10th Jul 2026381 AMAQI
10th Jul 2026372 AMAQI
10th Jul 2026333 AMAQI
10th Jul 2026304 AMAQI

20°C17/24°C

10th Jul 2026365 AMAQI
10th Jul 2026336 AMAQI
10th Jul 2026337 AMAQI
10th Jul 2026308 AMAQI
10th Jul 2026309 AMAQI
10th Jul 20263210 AMAQI
10th Jul 20263811 AMAQI
10th Jul 20264012 PMAQI
10th Jul 2026391 PMAQI
10th Jul 2026352 PMAQI
10th Jul 2026323 PMAQI
10th Jul 2026324 PMAQI
10th Jul 2026305 PMAQI
10th Jul 2026286 PMAQI
10th Jul 2026317 PMAQI
10th Jul 2026318 PMAQI
10th Jul 2026279 PMAQI
10th Jul 20262710 PMAQI
10th Jul 20262511 PMAQI
11th Jul 20263512 AMAQI
11th Jul 2026441 AMAQI
11th Jul 2026502 AMAQI
11th Jul 2026463 AMAQI
11th Jul 2026514 AMAQI

19°C17/23°C

11th Jul 2026405 AMAQI
11th Jul 2026366 AMAQI
11th Jul 2026297 AMAQI
11th Jul 2026298 AMAQI
11th Jul 2026299 AMAQI
11th Jul 20263310 AMAQI
11th Jul 20263811 AMAQI
11th Jul 20263612 PMAQI
11th Jul 2026341 PMAQI
11th Jul 2026302 PMAQI
11th Jul 2026313 PMAQI
11th Jul 2026264 PMAQI
11th Jul 2026225 PMAQI
11th Jul 2026206 PMAQI
11th Jul 2026197 PMAQI
11th Jul 2026178 PMAQI
11th Jul 2026179 PMAQI
11th Jul 20261610 PMAQI
11th Jul 20261511 PMAQI
12th Jul 20261512 AMAQI
12th Jul 2026151 AMAQI
12th Jul 2026142 AMAQI
12th Jul 2026153 AMAQI
12th Jul 2026164 AMAQI

20°C17/24°C

12th Jul 2026285 AMAQI
12th Jul 2026206 AMAQI
12th Jul 2026177 AMAQI
12th Jul 2026278 AMAQI
12th Jul 2026389 AMAQI
12th Jul 20262810 AMAQI
12th Jul 20262811 AMAQI
12th Jul 20262312 PMAQI
12th Jul 2026401 PMAQI
12th Jul 2026362 PMAQI
12th Jul 2026243 PMAQI
12th Jul 2026204 PMAQI
12th Jul 2026295 PMAQI
12th Jul 2026386 PMAQI
12th Jul 2026367 PMAQI
12th Jul 2026258 PMAQI
12th Jul 2026279 PMAQI
12th Jul 20262310 PMAQI
12th Jul 20263111 PMAQI
13th Jul 20263812 AMAQI
13th Jul 2026421 AMAQI
13th Jul 2026362 AMAQI
13th Jul 2026383 AMAQI
13th Jul 2026424 AMAQI

22°C17/29°C

13th Jul 2026265 AMAQI
5 AM
13th Jul 2026176 AMAQI
13th Jul 2026297 AMAQI
13th Jul 2026388 AMAQI
13th Jul 2026239 AMAQI
13th Jul 20261710 AMAQI
13th Jul 20261811 AMAQI
13th Jul 20262212 PMAQI
12 PM
13th Jul 2026241 PMAQI
13th Jul 2026262 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026444 PMAQI
13th Jul 2026335 PMAQI
13th Jul 2026326 PMAQI
13th Jul 2026387 PMAQI
7 PM
13th Jul 2026318 PMAQI
13th Jul 2026509 PMAQI
13th Jul 20266210 PMAQI
13th Jul 20266911 PMAQI
12 AM
4 AM

22°C18/28°C

Day time
Avg. Highest Time
5 AM

33AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
10 AM

23AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 5 AM (Avg. 33), while the lowest AQI was between 10 AM to 10 AM (Avg. 23).
Night time
Avg. Highest Time
4 AM

38AQI

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

23AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 38), while the lowest AQI was between 8 PM to 8 PM (Avg. 23).

2026 Days Vs Air Quality

San Diego, California, United States

2026

96%

182

4%

8

Total number of days with different AQI categories in last 194 days in 2026 (171 days remaining)

Good
182 Days
Moderate
8 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 96%

Health Risk Level:

Very Low

In 2026, 96% of 194 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

San Diego, California, 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
24AQI (US)
2nd January 2026
20AQI (US)
3rd January 2026
16AQI (US)
4th January 2026
13AQI (US)
5th January 2026
21AQI (US)
6th January 2026
30AQI (US)
7th January 2026
31AQI (US)
8th January 2026
33AQI (US)
9th January 2026
23AQI (US)
10th January 2026
25AQI (US)
11th January 2026
29AQI (US)
12th January 2026
29AQI (US)
13th January 2026
30AQI (US)
14th January 2026
40AQI (US)
15th January 2026
36AQI (US)
16th January 2026
42AQI (US)
17th January 2026
35AQI (US)
18th January 2026
32AQI (US)
19th January 2026
42AQI (US)
20th January 2026
52AQI (US)
21st January 2026
71AQI (US)
22nd January 2026
49AQI (US)
23rd January 2026
37AQI (US)
24th January 2026
25AQI (US)
25th January 2026
31AQI (US)
26th January 2026
31AQI (US)
27th January 2026
24AQI (US)
28th January 2026
36AQI (US)
29th January 2026
41AQI (US)
30th January 2026
48AQI (US)
31st January 2026
32AQI (US)
1st February 2026
42AQI (US)
2nd February 2026
43AQI (US)
3rd February 2026
44AQI (US)
4th February 2026
38AQI (US)
5th February 2026
42AQI (US)
6th February 2026
42AQI (US)
7th February 2026
36AQI (US)
8th February 2026
34AQI (US)
9th February 2026
38AQI (US)
10th February 2026
42AQI (US)
11th February 2026
23AQI (US)
12th February 2026
22AQI (US)
13th February 2026
31AQI (US)
14th February 2026
39AQI (US)
15th February 2026
38AQI (US)
16th February 2026
38AQI (US)
17th February 2026
27AQI (US)
18th February 2026
29AQI (US)
19th February 2026
26AQI (US)
20th February 2026
22AQI (US)
21st February 2026
22AQI (US)
22nd February 2026
27AQI (US)
23rd February 2026
32AQI (US)
24th February 2026
36AQI (US)
25th February 2026
34AQI (US)
26th February 2026
32AQI (US)
27th February 2026
31AQI (US)
28th February 2026
31AQI (US)
1st March 2026
30AQI (US)
2nd March 2026
43AQI (US)
3rd March 2026
29AQI (US)
4th March 2026
31AQI (US)
5th March 2026
26AQI (US)
6th March 2026
28AQI (US)
7th March 2026
26AQI (US)
8th March 2026
28AQI (US)
9th March 2026
22AQI (US)
10th March 2026
24AQI (US)
11th March 2026
31AQI (US)
12th March 2026
36AQI (US)
13th March 2026
37AQI (US)
14th March 2026
33AQI (US)
15th March 2026
28AQI (US)
16th March 2026
35AQI (US)
17th March 2026
35AQI (US)
18th March 2026
36AQI (US)
19th March 2026
38AQI (US)
20th March 2026
43AQI (US)
21st March 2026
32AQI (US)
22nd March 2026
28AQI (US)
23rd March 2026
37AQI (US)
24th March 2026
41AQI (US)
25th March 2026
28AQI (US)
26th March 2026
28AQI (US)
27th March 2026
31AQI (US)
28th March 2026
30AQI (US)
29th March 2026
28AQI (US)
30th March 2026
34AQI (US)
31st March 2026
28AQI (US)
1st April 2026
24AQI (US)
2nd April 2026
15AQI (US)
3rd April 2026
21AQI (US)
4th April 2026
31AQI (US)
5th April 2026
30AQI (US)
6th April 2026
36AQI (US)
7th April 2026
33AQI (US)
8th April 2026
37AQI (US)
9th April 2026
35AQI (US)
10th April 2026
28AQI (US)
11th April 2026
26AQI (US)
12th April 2026
23AQI (US)
13th April 2026
19AQI (US)
14th April 2026
19AQI (US)
15th April 2026
31AQI (US)
16th April 2026
23AQI (US)
17th April 2026
18th April 2026
33AQI (US)
19th April 2026
31AQI (US)
20th April 2026
27AQI (US)
21st April 2026
19AQI (US)
22nd April 2026
23rd April 2026
20AQI (US)
24th April 2026
23AQI (US)
25th April 2026
24AQI (US)
26th April 2026
28AQI (US)
27th April 2026
15AQI (US)
28th April 2026
20AQI (US)
29th April 2026
25AQI (US)
30th April 2026
28AQI (US)
1st May 2026
39AQI (US)
2nd May 2026
32AQI (US)
3rd May 2026
23AQI (US)
4th May 2026
26AQI (US)
5th May 2026
29AQI (US)
6th May 2026
28AQI (US)
7th May 2026
34AQI (US)
8th May 2026
40AQI (US)
9th May 2026
10th May 2026
35AQI (US)
11th May 2026
38AQI (US)
12th May 2026
33AQI (US)
13th May 2026
32AQI (US)
14th May 2026
28AQI (US)
15th May 2026
47AQI (US)
16th May 2026
48AQI (US)
17th May 2026
61AQI (US)
18th May 2026
57AQI (US)
19th May 2026
56AQI (US)
20th May 2026
59AQI (US)
21st May 2026
48AQI (US)
22nd May 2026
56AQI (US)
23rd May 2026
49AQI (US)
24th May 2026
44AQI (US)
25th May 2026
39AQI (US)
26th May 2026
23AQI (US)
27th May 2026
14AQI (US)
28th May 2026
15AQI (US)
29th May 2026
19AQI (US)
30th May 2026
18AQI (US)
31st May 2026
22AQI (US)
1st June 2026
31AQI (US)
2nd June 2026
40AQI (US)
3rd June 2026
41AQI (US)
4th June 2026
41AQI (US)
5th June 2026
32AQI (US)
6th June 2026
25AQI (US)
7th June 2026
32AQI (US)
8th June 2026
33AQI (US)
9th June 2026
27AQI (US)
10th June 2026
27AQI (US)
11th June 2026
28AQI (US)
12th June 2026
20AQI (US)
13th June 2026
15AQI (US)
14th June 2026
18AQI (US)
15th June 2026
22AQI (US)
16th June 2026
23AQI (US)
17th June 2026
24AQI (US)
18th June 2026
20AQI (US)
19th June 2026
24AQI (US)
20th June 2026
19AQI (US)
21st June 2026
27AQI (US)
22nd June 2026
22AQI (US)
23rd June 2026
33AQI (US)
24th June 2026
26AQI (US)
25th June 2026
21AQI (US)
26th June 2026
23AQI (US)
27th June 2026
22AQI (US)
28th June 2026
16AQI (US)
29th June 2026
22AQI (US)
30th June 2026
27AQI (US)
1st July 2026
21AQI (US)
2nd July 2026
35AQI (US)
3rd July 2026
23AQI (US)
4th July 2026
24AQI (US)
5th July 2026
38AQI (US)
6th July 2026
25AQI (US)
7th July 2026
56AQI (US)
8th July 2026
29AQI (US)
9th July 2026
34AQI (US)
10th July 2026
33AQI (US)
11th July 2026
31AQI (US)
12th July 2026
26AQI (US)
13th July 2026
14th July 2026
15th July 2026
16th July 2026
17th July 2026
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

33AQI (US)

34AQI (US)

32AQI (US)

26AQI (US)

36AQI (US)

26AQI (US)

31AQI (US)

No. of days

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

202631AQI (US)

29
2
28
31
28
25
5
30
11
1
182
8

Highest AQI (US) recorded in

May

36AQI (US)

Lowest AQI (US) recorded in

June

26AQI (US)

202548AQI (US)

6
21
9
18
13
13
17
24
7
9
22
25
5
12
19
15
15
12
19
155
126

Highest AQI (US) recorded in

December

58AQI (US)

Lowest AQI (US) recorded in

March

33AQI (US)

Most & Least Polluted Years Over the Last 2 Years

Most Polluted Year Recorded
2025(Avg.)
48AQI (US)
Least Polluted Year Recorded
2026(Avg.)
31AQI (US)

San Diego's annual 2026 AQI (US) (31) shows an average percentage change of -35.4% (improved AQI (US)) compared to previous years: 2025 (48).