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Charleston, South Carolina, 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+

October Air Quality Analysis

Charleston, South Carolina, United States

2021
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
2nd Oct 2024
59AQI
Lowest AQI recorded on
3rd Oct 2021
17AQI

Same Day Analysis (4th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 33 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: 4th Oct - 5th Oct 2025

Charleston, South Carolina, United States

AQI
Day
Night
.

7 AM4th Oct 2025

7 PM

6 AM5th Oct 2025

Day time
Avg. Highest Time
8AM4th Oct

50AQI

Avg. Lowest Time
7PM4th Oct

27AQI

Night time
Avg. Highest Time
1AM5th Oct

41AQI

Avg. Lowest Time
5AM5th Oct

24AQI

In the last 24 hours,

Charleston's AQI reached its highest point of 50 at 8 AM during the Day, while the lowest point, 24, was recorded at 5 AM during the Night between 4th Oct and 5th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Charleston, South Carolina, United States

SepOct
05th - 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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th
Day
Night
5th Sep 2025397 AMAQI
5th Sep 2025428 AMAQI
5th Sep 2025409 AMAQI
5th Sep 20253710 AMAQI
5th Sep 20253711 AMAQI
5th Sep 20253912 PMAQI
5th Sep 2025461 PMAQI
5th Sep 2025462 PMAQI
5th Sep 2025463 PMAQI
5th Sep 2025444 PMAQI
5th Sep 2025425 PMAQI
5th Sep 2025426 PMAQI
5th Sep 2025377 PMAQI
5th Sep 2025368 PMAQI
5th Sep 2025359 PMAQI
5th Sep 20253610 PMAQI
5th Sep 20253911 PMAQI
6th Sep 20253912 AMAQI
6th Sep 2025471 AMAQI
6th Sep 2025442 AMAQI
6th Sep 2025423 AMAQI
6th Sep 2025404 AMAQI
6th Sep 2025395 AMAQI
6th Sep 2025396 AMAQI

28°C22/34°C

6th Sep 2025387 AMAQI
6th Sep 2025408 AMAQI
6th Sep 2025399 AMAQI
6th Sep 20253710 AMAQI
6th Sep 20253611 AMAQI
6th Sep 20253412 PMAQI
6th Sep 2025321 PMAQI
6th Sep 2025342 PMAQI
6th Sep 2025313 PMAQI
6th Sep 2025304 PMAQI
6th Sep 2025275 PMAQI
6th Sep 2025286 PMAQI
6th Sep 2025337 PMAQI
6th Sep 2025298 PMAQI
6th Sep 2025279 PMAQI
6th Sep 20252610 PMAQI
6th Sep 20252711 PMAQI
7th Sep 20252812 AMAQI
7th Sep 2025291 AMAQI
7th Sep 2025302 AMAQI
7th Sep 2025303 AMAQI
7th Sep 2025304 AMAQI
7th Sep 2025305 AMAQI
7th Sep 2025306 AMAQI

27°C23/32°C

7th Sep 2025307 AMAQI
7th Sep 2025318 AMAQI
7th Sep 2025299 AMAQI
7th Sep 20252910 AMAQI
7th Sep 20252911 AMAQI
7th Sep 20253012 PMAQI
7th Sep 2025291 PMAQI
7th Sep 2025282 PMAQI
7th Sep 2025263 PMAQI
7th Sep 2025304 PMAQI
7th Sep 2025365 PMAQI
7th Sep 2025376 PMAQI
7th Sep 2025277 PMAQI
7th Sep 2025328 PMAQI
7th Sep 2025389 PMAQI
7th Sep 20253710 PMAQI
7th Sep 20253811 PMAQI
8th Sep 20253812 AMAQI
8th Sep 2025391 AMAQI
8th Sep 2025412 AMAQI
8th Sep 2025453 AMAQI
8th Sep 2025444 AMAQI
8th Sep 2025405 AMAQI
8th Sep 2025426 AMAQI

28°C24/35°C

8th Sep 2025437 AMAQI
8th Sep 2025438 AMAQI
8th Sep 2025429 AMAQI
8th Sep 20254210 AMAQI
8th Sep 20254011 AMAQI
8th Sep 20253712 PMAQI
8th Sep 2025351 PMAQI
8th Sep 2025362 PMAQI
8th Sep 2025353 PMAQI
8th Sep 2025354 PMAQI
8th Sep 2025355 PMAQI
8th Sep 2025346 PMAQI
8th Sep 2025377 PMAQI
8th Sep 2025388 PMAQI
8th Sep 2025379 PMAQI
8th Sep 20253710 PMAQI
8th Sep 20253911 PMAQI
9th Sep 20253912 AMAQI
9th Sep 2025411 AMAQI
9th Sep 2025402 AMAQI
9th Sep 2025393 AMAQI
9th Sep 2025374 AMAQI
9th Sep 2025365 AMAQI
9th Sep 2025366 AMAQI

24°C19/28°C

9th Sep 2025367 AMAQI
9th Sep 2025368 AMAQI
9th Sep 2025389 AMAQI
9th Sep 20253610 AMAQI
9th Sep 20253611 AMAQI
9th Sep 20253312 PMAQI
9th Sep 2025321 PMAQI
9th Sep 2025332 PMAQI
9th Sep 2025323 PMAQI
9th Sep 2025314 PMAQI
9th Sep 2025315 PMAQI
9th Sep 2025326 PMAQI
9th Sep 2025367 PMAQI
9th Sep 2025368 PMAQI
9th Sep 2025369 PMAQI
9th Sep 20253810 PMAQI
9th Sep 20253911 PMAQI
10th Sep 20253812 AMAQI
10th Sep 2025371 AMAQI
10th Sep 2025382 AMAQI
10th Sep 2025363 AMAQI
10th Sep 2025364 AMAQI
10th Sep 2025415 AMAQI
10th Sep 2025406 AMAQI

24°C19/29°C

10th Sep 2025427 AMAQI
10th Sep 2025448 AMAQI
10th Sep 2025429 AMAQI
10th Sep 20253910 AMAQI
10th Sep 20253811 AMAQI
10th Sep 20253612 PMAQI
10th Sep 2025351 PMAQI
10th Sep 2025352 PMAQI
10th Sep 2025353 PMAQI
10th Sep 2025344 PMAQI
10th Sep 2025365 PMAQI
10th Sep 2025396 PMAQI
10th Sep 2025387 PMAQI
10th Sep 2025378 PMAQI
10th Sep 2025399 PMAQI
10th Sep 20253910 PMAQI
10th Sep 20254311 PMAQI
11th Sep 20254312 AMAQI
11th Sep 2025481 AMAQI
11th Sep 2025492 AMAQI
11th Sep 2025503 AMAQI
11th Sep 2025494 AMAQI
11th Sep 2025485 AMAQI
11th Sep 2025466 AMAQI

25°C21/31°C

11th Sep 2025507 AMAQI
11th Sep 2025498 AMAQI
11th Sep 2025489 AMAQI
11th Sep 20254410 AMAQI
11th Sep 20254411 AMAQI
11th Sep 20254212 PMAQI
11th Sep 2025401 PMAQI
11th Sep 2025402 PMAQI
11th Sep 2025363 PMAQI
11th Sep 2025344 PMAQI
11th Sep 2025305 PMAQI
11th Sep 2025306 PMAQI
11th Sep 2025417 PMAQI
11th Sep 2025368 PMAQI
11th Sep 2025309 PMAQI
11th Sep 20253210 PMAQI
11th Sep 20253311 PMAQI
12th Sep 20253512 AMAQI
12th Sep 2025361 AMAQI
12th Sep 2025362 AMAQI
12th Sep 2025393 AMAQI
12th Sep 2025454 AMAQI
12th Sep 2025465 AMAQI
12th Sep 2025456 AMAQI

24°C19/31°C

12th Sep 2025447 AMAQI
12th Sep 2025448 AMAQI
12th Sep 2025449 AMAQI
12th Sep 20254110 AMAQI
12th Sep 20254011 AMAQI
12th Sep 20253912 PMAQI
12th Sep 2025371 PMAQI
12th Sep 2025362 PMAQI
12th Sep 2025333 PMAQI
12th Sep 2025324 PMAQI
12th Sep 2025325 PMAQI
12th Sep 2025326 PMAQI
12th Sep 2025357 PMAQI
12th Sep 2025328 PMAQI
12th Sep 2025329 PMAQI
12th Sep 20253510 PMAQI
12th Sep 20253611 PMAQI
13th Sep 20253812 AMAQI
13th Sep 2025391 AMAQI
13th Sep 2025412 AMAQI
13th Sep 2025443 AMAQI
13th Sep 2025444 AMAQI
13th Sep 2025445 AMAQI
13th Sep 2025456 AMAQI

26°C20/32°C

13th Sep 2025437 AMAQI
13th Sep 2025438 AMAQI
13th Sep 2025429 AMAQI
13th Sep 20254010 AMAQI
13th Sep 20254011 AMAQI
13th Sep 20254012 PMAQI
13th Sep 2025401 PMAQI
13th Sep 2025402 PMAQI
13th Sep 2025403 PMAQI
13th Sep 2025404 PMAQI
13th Sep 2025425 PMAQI
13th Sep 2025436 PMAQI
13th Sep 2025407 PMAQI
13th Sep 2025408 PMAQI
13th Sep 2025429 PMAQI
13th Sep 20254310 PMAQI
13th Sep 20254511 PMAQI
14th Sep 20254712 AMAQI
14th Sep 2025491 AMAQI
14th Sep 2025522 AMAQI
14th Sep 2025513 AMAQI
14th Sep 2025494 AMAQI
14th Sep 2025465 AMAQI
14th Sep 2025466 AMAQI

24°C20/29°C

14th Sep 2025467 AMAQI
14th Sep 2025458 AMAQI
14th Sep 2025459 AMAQI
14th Sep 20254510 AMAQI
14th Sep 20254411 AMAQI
14th Sep 20254212 PMAQI
14th Sep 2025401 PMAQI
14th Sep 2025412 PMAQI
14th Sep 2025403 PMAQI
14th Sep 2025394 PMAQI
14th Sep 2025405 PMAQI
14th Sep 2025416 PMAQI
14th Sep 2025427 PMAQI
14th Sep 2025438 PMAQI
14th Sep 2025479 PMAQI
14th Sep 20254510 PMAQI
14th Sep 20254811 PMAQI
15th Sep 20254812 AMAQI
15th Sep 2025531 AMAQI
15th Sep 2025542 AMAQI
15th Sep 2025563 AMAQI
15th Sep 2025534 AMAQI
15th Sep 2025535 AMAQI
15th Sep 2025526 AMAQI

25°C19/32°C

15th Sep 2025507 AMAQI
15th Sep 2025438 AMAQI
15th Sep 2025609 AMAQI
15th Sep 20255510 AMAQI
15th Sep 20255411 AMAQI
15th Sep 20255312 PMAQI
15th Sep 2025531 PMAQI
15th Sep 2025522 PMAQI
15th Sep 2025533 PMAQI
15th Sep 2025524 PMAQI
15th Sep 2025525 PMAQI
15th Sep 2025516 PMAQI
15th Sep 2025527 PMAQI
15th Sep 2025528 PMAQI
15th Sep 2025539 PMAQI
15th Sep 20255310 PMAQI
15th Sep 20255411 PMAQI
16th Sep 20255512 AMAQI
16th Sep 2025541 AMAQI
16th Sep 2025532 AMAQI
16th Sep 2025533 AMAQI
16th Sep 2025534 AMAQI
16th Sep 2025545 AMAQI
16th Sep 2025546 AMAQI

25°C18/32°C

16th Sep 2025547 AMAQI
16th Sep 2025568 AMAQI
16th Sep 2025569 AMAQI
16th Sep 20255510 AMAQI
16th Sep 20255411 AMAQI
16th Sep 20255212 PMAQI
16th Sep 2025491 PMAQI
16th Sep 2025502 PMAQI
16th Sep 2025523 PMAQI
16th Sep 2025494 PMAQI
16th Sep 2025505 PMAQI
16th Sep 2025506 PMAQI
16th Sep 2025537 PMAQI
16th Sep 2025538 PMAQI
16th Sep 2025519 PMAQI
16th Sep 20255310 PMAQI
16th Sep 20255411 PMAQI
17th Sep 20255312 AMAQI
17th Sep 2025541 AMAQI
17th Sep 2025542 AMAQI
17th Sep 2025543 AMAQI
17th Sep 2025544 AMAQI
17th Sep 2025535 AMAQI
17th Sep 2025536 AMAQI

25°C19/32°C

17th Sep 2025547 AMAQI
17th Sep 2025538 AMAQI
17th Sep 2025609 AMAQI
17th Sep 20255210 AMAQI
17th Sep 20255111 AMAQI
17th Sep 20255212 PMAQI
17th Sep 2025521 PMAQI
17th Sep 2025542 PMAQI
17th Sep 2025543 PMAQI
17th Sep 2025544 PMAQI
17th Sep 2025545 PMAQI
17th Sep 2025536 PMAQI
17th Sep 2025537 PMAQI
17th Sep 2025528 PMAQI
17th Sep 2025529 PMAQI
17th Sep 20255210 PMAQI
17th Sep 20255211 PMAQI
18th Sep 20255212 AMAQI
18th Sep 2025481 AMAQI
18th Sep 2025482 AMAQI
18th Sep 2025463 AMAQI
18th Sep 2025494 AMAQI
18th Sep 2025525 AMAQI
18th Sep 2025526 AMAQI

26°C20/33°C

18th Sep 2025517 AMAQI
18th Sep 2025538 AMAQI
18th Sep 2025539 AMAQI
18th Sep 20255210 AMAQI
18th Sep 20255111 AMAQI
18th Sep 20255212 PMAQI
18th Sep 2025541 PMAQI
18th Sep 2025532 PMAQI
18th Sep 2025533 PMAQI
18th Sep 2025534 PMAQI
18th Sep 2025535 PMAQI
18th Sep 2025526 PMAQI
18th Sep 2025527 PMAQI
18th Sep 2025508 PMAQI
18th Sep 2025459 PMAQI
18th Sep 20254610 PMAQI
18th Sep 20254811 PMAQI
19th Sep 20255212 AMAQI
19th Sep 2025491 AMAQI
19th Sep 2025462 AMAQI
19th Sep 2025473 AMAQI
19th Sep 2025474 AMAQI
19th Sep 2025485 AMAQI
19th Sep 2025516 AMAQI

27°C23/34°C

19th Sep 2025527 AMAQI
19th Sep 2025538 AMAQI
19th Sep 2025519 AMAQI
19th Sep 20255110 AMAQI
19th Sep 20255311 AMAQI
19th Sep 20255412 PMAQI
19th Sep 2025541 PMAQI
19th Sep 2025532 PMAQI
19th Sep 2025533 PMAQI
19th Sep 2025544 PMAQI
19th Sep 2025535 PMAQI
19th Sep 2025536 PMAQI
19th Sep 2025517 PMAQI
19th Sep 2025518 PMAQI
19th Sep 2025529 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20255211 PMAQI
20th Sep 20255312 AMAQI
20th Sep 2025521 AMAQI
20th Sep 2025522 AMAQI
20th Sep 2025543 AMAQI
20th Sep 2025544 AMAQI
20th Sep 2025525 AMAQI
20th Sep 2025546 AMAQI

25°C22/32°C

20th Sep 2025567 AMAQI
20th Sep 2025578 AMAQI
20th Sep 2025559 AMAQI
20th Sep 20255610 AMAQI
20th Sep 20255511 AMAQI
20th Sep 20255412 PMAQI
20th Sep 2025541 PMAQI
20th Sep 2025542 PMAQI
20th Sep 2025543 PMAQI
20th Sep 2025534 PMAQI
20th Sep 2025535 PMAQI
20th Sep 2025526 PMAQI
20th Sep 2025547 PMAQI
20th Sep 2025528 PMAQI
20th Sep 2025509 PMAQI
20th Sep 20255110 PMAQI
20th Sep 20255011 PMAQI
21st Sep 20255212 AMAQI
21st Sep 2025481 AMAQI
21st Sep 2025502 AMAQI
21st Sep 2025503 AMAQI
21st Sep 2025504 AMAQI
21st Sep 2025505 AMAQI
21st Sep 2025496 AMAQI

25°C21/33°C

21st Sep 2025497 AMAQI
21st Sep 2025468 AMAQI
21st Sep 2025499 AMAQI
21st Sep 20254810 AMAQI
21st Sep 20254611 AMAQI
21st Sep 20254712 PMAQI
21st Sep 2025451 PMAQI
21st Sep 2025472 PMAQI
21st Sep 2025473 PMAQI
21st Sep 2025474 PMAQI
21st Sep 2025485 PMAQI
21st Sep 2025486 PMAQI
21st Sep 2025487 PMAQI
21st Sep 2025488 PMAQI
21st Sep 2025489 PMAQI
21st Sep 20255010 PMAQI
21st Sep 20254811 PMAQI
22nd Sep 20254612 AMAQI
22nd Sep 2025441 AMAQI
22nd Sep 2025462 AMAQI
22nd Sep 2025453 AMAQI
22nd Sep 2025454 AMAQI
22nd Sep 2025475 AMAQI
22nd Sep 2025486 AMAQI

25°C21/29°C

22nd Sep 2025477 AMAQI
22nd Sep 2025468 AMAQI
22nd Sep 2025489 AMAQI
22nd Sep 20254510 AMAQI
22nd Sep 20254411 AMAQI
22nd Sep 20254512 PMAQI
22nd Sep 2025431 PMAQI
22nd Sep 2025432 PMAQI
22nd Sep 2025463 PMAQI
22nd Sep 2025444 PMAQI
22nd Sep 2025445 PMAQI
22nd Sep 2025436 PMAQI
22nd Sep 2025467 PMAQI
22nd Sep 2025448 PMAQI
22nd Sep 2025419 PMAQI
22nd Sep 20254010 PMAQI
22nd Sep 20254111 PMAQI
23rd Sep 20254012 AMAQI
23rd Sep 2025351 AMAQI
23rd Sep 2025412 AMAQI
23rd Sep 2025423 AMAQI
23rd Sep 2025384 AMAQI
23rd Sep 2025375 AMAQI
23rd Sep 2025426 AMAQI

24°C22/29°C

23rd Sep 2025417 AMAQI
23rd Sep 2025418 AMAQI
23rd Sep 2025399 AMAQI
23rd Sep 20254110 AMAQI
23rd Sep 20254011 AMAQI
23rd Sep 20253812 PMAQI
23rd Sep 2025361 PMAQI
23rd Sep 2025372 PMAQI
23rd Sep 2025393 PMAQI
23rd Sep 2025394 PMAQI
23rd Sep 2025385 PMAQI
23rd Sep 2025356 PMAQI
23rd Sep 2025407 PMAQI
23rd Sep 2025408 PMAQI
23rd Sep 2025349 PMAQI
23rd Sep 20253510 PMAQI
23rd Sep 20253511 PMAQI
24th Sep 20253312 AMAQI
24th Sep 2025281 AMAQI
24th Sep 2025282 AMAQI
24th Sep 2025273 AMAQI
24th Sep 2025264 AMAQI
24th Sep 2025305 AMAQI
24th Sep 2025326 AMAQI

25°C22/29°C

24th Sep 2025307 AMAQI
24th Sep 2025318 AMAQI
24th Sep 2025329 AMAQI
24th Sep 20253310 AMAQI
24th Sep 20253411 AMAQI
24th Sep 20253412 PMAQI
24th Sep 2025311 PMAQI
24th Sep 2025322 PMAQI
24th Sep 2025343 PMAQI
24th Sep 2025344 PMAQI
24th Sep 2025325 PMAQI
24th Sep 2025326 PMAQI
24th Sep 2025317 PMAQI
24th Sep 2025308 PMAQI
24th Sep 2025309 PMAQI
24th Sep 20252910 PMAQI
24th Sep 20252811 PMAQI
25th Sep 20252512 AMAQI
25th Sep 2025221 AMAQI
25th Sep 2025242 AMAQI
25th Sep 2025233 AMAQI
25th Sep 2025224 AMAQI
25th Sep 2025215 AMAQI
25th Sep 2025256 AMAQI

26°C23/29°C

25th Sep 2025287 AMAQI
25th Sep 2025278 AMAQI
25th Sep 2025279 AMAQI
25th Sep 20252510 AMAQI
25th Sep 20252411 AMAQI
25th Sep 20252612 PMAQI
25th Sep 2025271 PMAQI
25th Sep 2025292 PMAQI
25th Sep 2025303 PMAQI
25th Sep 2025304 PMAQI
25th Sep 2025305 PMAQI
25th Sep 2025306 PMAQI
25th Sep 2025297 PMAQI
25th Sep 2025268 PMAQI
25th Sep 2025249 PMAQI
25th Sep 20252410 PMAQI
25th Sep 20252311 PMAQI
26th Sep 20252412 AMAQI
26th Sep 2025291 AMAQI
26th Sep 2025312 AMAQI
26th Sep 2025243 AMAQI
26th Sep 2025244 AMAQI
26th Sep 2025245 AMAQI
26th Sep 2025286 AMAQI

27°C25/31°C

26th Sep 2025277 AMAQI
26th Sep 2025328 AMAQI
26th Sep 2025349 AMAQI
26th Sep 20253010 AMAQI
26th Sep 20252811 AMAQI
26th Sep 20252512 PMAQI
26th Sep 2025281 PMAQI
26th Sep 2025302 PMAQI
26th Sep 2025313 PMAQI
26th Sep 2025314 PMAQI
26th Sep 2025315 PMAQI
26th Sep 2025326 PMAQI
26th Sep 2025357 PMAQI
26th Sep 2025398 PMAQI
26th Sep 2025299 PMAQI
26th Sep 20253410 PMAQI
26th Sep 20254111 PMAQI
27th Sep 20252512 AMAQI
27th Sep 2025211 AMAQI
27th Sep 2025252 AMAQI
27th Sep 2025323 AMAQI
27th Sep 2025264 AMAQI
27th Sep 2025255 AMAQI
27th Sep 2025296 AMAQI

27°C25/30°C

27th Sep 2025357 AMAQI
27th Sep 2025398 AMAQI
27th Sep 2025629 AMAQI
27th Sep 20254910 AMAQI
27th Sep 20253211 AMAQI
27th Sep 20252412 PMAQI
27th Sep 2025221 PMAQI
27th Sep 2025162 PMAQI
27th Sep 2025173 PMAQI
27th Sep 2025154 PMAQI
27th Sep 2025135 PMAQI
27th Sep 2025146 PMAQI
27th Sep 2025167 PMAQI
27th Sep 2025188 PMAQI
27th Sep 2025199 PMAQI
27th Sep 20252010 PMAQI
27th Sep 20252011 PMAQI
28th Sep 20252112 AMAQI
28th Sep 2025241 AMAQI
28th Sep 2025312 AMAQI
28th Sep 2025493 AMAQI
28th Sep 2025304 AMAQI
28th Sep 2025305 AMAQI
28th Sep 2025346 AMAQI

25°C23/28°C

28th Sep 2025357 AMAQI
28th Sep 2025258 AMAQI
28th Sep 2025229 AMAQI
28th Sep 20251910 AMAQI
28th Sep 20251811 AMAQI
28th Sep 20253012 PMAQI
28th Sep 2025461 PMAQI
28th Sep 2025472 PMAQI
28th Sep 2025453 PMAQI
28th Sep 2025474 PMAQI
28th Sep 2025425 PMAQI
28th Sep 2025406 PMAQI
28th Sep 2025427 PMAQI
28th Sep 2025468 PMAQI
28th Sep 2025499 PMAQI
28th Sep 20254710 PMAQI
28th Sep 20254911 PMAQI
29th Sep 20254912 AMAQI
29th Sep 2025471 AMAQI
29th Sep 2025452 AMAQI
29th Sep 2025453 AMAQI
29th Sep 2025424 AMAQI
29th Sep 2025425 AMAQI
29th Sep 2025416 AMAQI

25°C23/29°C

29th Sep 2025447 AMAQI
29th Sep 2025428 AMAQI
29th Sep 2025449 AMAQI
29th Sep 20254210 AMAQI
29th Sep 20253911 AMAQI
29th Sep 20254112 PMAQI
29th Sep 2025381 PMAQI
29th Sep 2025362 PMAQI
29th Sep 2025313 PMAQI
29th Sep 2025324 PMAQI
29th Sep 2025315 PMAQI
29th Sep 2025296 PMAQI
29th Sep 2025257 PMAQI
29th Sep 2025308 PMAQI
29th Sep 2025349 PMAQI
29th Sep 20253410 PMAQI
29th Sep 20253411 PMAQI
30th Sep 20253212 AMAQI
30th Sep 2025361 AMAQI
30th Sep 2025372 AMAQI
30th Sep 2025383 AMAQI
30th Sep 2025434 AMAQI
30th Sep 2025425 AMAQI
30th Sep 2025406 AMAQI

24°C23/29°C

30th Sep 2025417 AMAQI
30th Sep 2025398 AMAQI
30th Sep 2025379 AMAQI
30th Sep 20253910 AMAQI
30th Sep 20254211 AMAQI
30th Sep 20254512 PMAQI
30th Sep 2025421 PMAQI
30th Sep 2025412 PMAQI
30th Sep 2025433 PMAQI
30th Sep 2025424 PMAQI
30th Sep 2025475 PMAQI
30th Sep 2025476 PMAQI
30th Sep 2025517 PMAQI
30th Sep 2025478 PMAQI
30th Sep 2025539 PMAQI
30th Sep 20255410 PMAQI
30th Sep 20255611 PMAQI
1st Oct 20255612 AMAQI
1st Oct 2025551 AMAQI
1st Oct 2025542 AMAQI
1st Oct 2025553 AMAQI
1st Oct 2025544 AMAQI
1st Oct 2025585 AMAQI
1st Oct 2025536 AMAQI

23°C22/25°C

1st Oct 2025517 AMAQI
1st Oct 2025508 AMAQI
1st Oct 2025479 AMAQI
1st Oct 20254610 AMAQI
1st Oct 20254611 AMAQI
1st Oct 20254912 PMAQI
1st Oct 2025501 PMAQI
1st Oct 2025482 PMAQI
1st Oct 2025483 PMAQI
1st Oct 2025514 PMAQI
1st Oct 2025495 PMAQI
1st Oct 2025506 PMAQI
1st Oct 2025497 PMAQI
1st Oct 2025468 PMAQI
1st Oct 2025489 PMAQI
1st Oct 20254910 PMAQI
1st Oct 20255011 PMAQI
2nd Oct 20254912 AMAQI
2nd Oct 2025461 AMAQI
2nd Oct 2025452 AMAQI
2nd Oct 2025463 AMAQI
2nd Oct 2025444 AMAQI
2nd Oct 2025445 AMAQI
2nd Oct 2025436 AMAQI

24°C20/28°C

2nd Oct 2025417 AMAQI
2nd Oct 2025408 AMAQI
2nd Oct 2025409 AMAQI
2nd Oct 20254010 AMAQI
2nd Oct 20254111 AMAQI
2nd Oct 20254212 PMAQI
2nd Oct 2025421 PMAQI
2nd Oct 2025372 PMAQI
2nd Oct 2025363 PMAQI
2nd Oct 2025374 PMAQI
2nd Oct 2025415 PMAQI
2nd Oct 2025476 PMAQI
2nd Oct 2025457 PMAQI
2nd Oct 2025398 PMAQI
2nd Oct 2025379 PMAQI
2nd Oct 20253710 PMAQI
2nd Oct 20253811 PMAQI
3rd Oct 20253812 AMAQI
3rd Oct 2025401 AMAQI
3rd Oct 2025372 AMAQI
3rd Oct 2025383 AMAQI
3rd Oct 2025394 AMAQI
3rd Oct 2025425 AMAQI
3rd Oct 2025476 AMAQI

22°C17/27°C

3rd Oct 2025437 AMAQI
3rd Oct 2025458 AMAQI
3rd Oct 2025419 AMAQI
3rd Oct 20253910 AMAQI
3rd Oct 20253911 AMAQI
3rd Oct 20254312 PMAQI
3rd Oct 2025421 PMAQI
3rd Oct 2025392 PMAQI
3rd Oct 2025343 PMAQI
3rd Oct 2025384 PMAQI
3rd Oct 2025395 PMAQI
3rd Oct 2025416 PMAQI
3rd Oct 2025427 PMAQI
3rd Oct 2025348 PMAQI
3rd Oct 2025369 PMAQI
3rd Oct 20254010 PMAQI
3rd Oct 20253411 PMAQI
4th Oct 20253012 AMAQI
4th Oct 2025291 AMAQI
4th Oct 2025422 AMAQI
4th Oct 2025523 AMAQI
4th Oct 2025584 AMAQI
4th Oct 2025555 AMAQI
4th Oct 2025466 AMAQI

22°C17/28°C

4th Oct 2025457 AMAQI
4th Oct 2025508 AMAQI
4th Oct 2025469 AMAQI
4th Oct 20253310 AMAQI
4th Oct 20254411 AMAQI
4th Oct 20254512 PMAQI
4th Oct 2025431 PMAQI
4th Oct 2025352 PMAQI
4th Oct 2025343 PMAQI
4th Oct 2025354 PMAQI
4th Oct 2025335 PMAQI
4th Oct 2025296 PMAQI
4th Oct 2025277 PMAQI
4th Oct 2025268 PMAQI
4th Oct 2025299 PMAQI
4th Oct 20252410 PMAQI
4th Oct 20252811 PMAQI
5th Oct 20253212 AMAQI
5th Oct 2025411 AMAQI
5th Oct 2025352 AMAQI
5th Oct 2025303 AMAQI
5th Oct 2025274 AMAQI
5th Oct 2025245 AMAQI
5th Oct 2025256 AMAQI

24°C21/28°C

5th Oct 2025227 AMAQI
7 AM
5th Oct 2025228 AMAQI
5th Oct 2025209 AMAQI
5th Oct 20252310 AMAQI
5th Oct 20252511 AMAQI
5th Oct 20252612 PMAQI
1 PM
7 PM
1 AM
6 AM

--°C/°C

Day time
Avg. Highest Time
7 AM - 9 AM

42AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
10 AM - 7 PM

40AQI

10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 9 AM (Avg. 42), while the lowest AQI was between 10 AM to 7 PM (Avg. 40).
Night time
Avg. Highest Time
3 AM - 6 AM

42AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
8 PM - 11 PM

40AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 3 AM to 6 AM (Avg. 42), while the lowest AQI was between 8 PM to 11 PM (Avg. 40).

2025 Days Vs Air Quality

Charleston, South Carolina, United States

2025

89%

246

11%

31

Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)

Good
246 Days
Moderate
31 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 89%

Health Risk Level:

Low

In 2025, 89% of 278 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

Charleston, South Carolina, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
36AQI
2nd January 2025
41AQI
3rd January 2025
39AQI
4th January 2025
27AQI
5th January 2025
36AQI
6th January 2025
37AQI
7th January 2025
29AQI
8th January 2025
34AQI
9th January 2025
36AQI
10th January 2025
43AQI
11th January 2025
25AQI
12th January 2025
32AQI
13th January 2025
39AQI
14th January 2025
33AQI
15th January 2025
32AQI
16th January 2025
44AQI
17th January 2025
41AQI
18th January 2025
33AQI
19th January 2025
27AQI
20th January 2025
22AQI
21st January 2025
26AQI
22nd January 2025
27AQI
23rd January 2025
34AQI
24th January 2025
40AQI
25th January 2025
42AQI
26th January 2025
41AQI
27th January 2025
43AQI
28th January 2025
28AQI
29th January 2025
33AQI
30th January 2025
39AQI
31st January 2025
40AQI
1st February 2025
31AQI
2nd February 2025
36AQI
3rd February 2025
37AQI
4th February 2025
46AQI
5th February 2025
53AQI
6th February 2025
51AQI
7th February 2025
47AQI
8th February 2025
46AQI
9th February 2025
37AQI
10th February 2025
43AQI
11th February 2025
40AQI
12th February 2025
35AQI
13th February 2025
30AQI
14th February 2025
26AQI
15th February 2025
34AQI
16th February 2025
29AQI
17th February 2025
33AQI
18th February 2025
39AQI
19th February 2025
30AQI
20th February 2025
34AQI
21st February 2025
27AQI
22nd February 2025
42AQI
23rd February 2025
55AQI
24th February 2025
57AQI
25th February 2025
64AQI
26th February 2025
81AQI
27th February 2025
70AQI
28th February 2025
42AQI
1st March 2025
57AQI
2nd March 2025
44AQI
3rd March 2025
41AQI
4th March 2025
34AQI
5th March 2025
49AQI
6th March 2025
28AQI
7th March 2025
35AQI
8th March 2025
49AQI
9th March 2025
30AQI
10th March 2025
41AQI
11th March 2025
39AQI
12th March 2025
48AQI
13th March 2025
49AQI
14th March 2025
46AQI
15th March 2025
39AQI
16th March 2025
52AQI
17th March 2025
36AQI
18th March 2025
25AQI
19th March 2025
42AQI
20th March 2025
37AQI
21st March 2025
30AQI
22nd March 2025
52AQI
23rd March 2025
51AQI
24th March 2025
38AQI
25th March 2025
33AQI
26th March 2025
38AQI
27th March 2025
37AQI
28th March 2025
42AQI
29th March 2025
36AQI
30th March 2025
38AQI
31st March 2025
30AQI
1st April 2025
43AQI
2nd April 2025
44AQI
3rd April 2025
44AQI
4th April 2025
46AQI
5th April 2025
39AQI
6th April 2025
39AQI
7th April 2025
46AQI
8th April 2025
29AQI
9th April 2025
42AQI
10th April 2025
40AQI
11th April 2025
34AQI
12th April 2025
28AQI
13th April 2025
34AQI
14th April 2025
41AQI
15th April 2025
52AQI
16th April 2025
44AQI
17th April 2025
52AQI
18th April 2025
38AQI
19th April 2025
29AQI
20th April 2025
28AQI
21st April 2025
38AQI
22nd April 2025
41AQI
23rd April 2025
42AQI
24th April 2025
44AQI
25th April 2025
42AQI
26th April 2025
42AQI
27th April 2025
44AQI
28th April 2025
35AQI
29th April 2025
26AQI
30th April 2025
30AQI
1st May 2025
35AQI
2nd May 2025
41AQI
3rd May 2025
35AQI
4th May 2025
30AQI
5th May 2025
34AQI
6th May 2025
42AQI
7th May 2025
49AQI
8th May 2025
48AQI
9th May 2025
32AQI
10th May 2025
35AQI
11th May 2025
28AQI
12th May 2025
35AQI
13th May 2025
29AQI
14th May 2025
33AQI
15th May 2025
45AQI
16th May 2025
54AQI
17th May 2025
49AQI
18th May 2025
43AQI
19th May 2025
42AQI
20th May 2025
51AQI
21st May 2025
48AQI
22nd May 2025
30AQI
23rd May 2025
42AQI
24th May 2025
34AQI
25th May 2025
38AQI
26th May 2025
40AQI
27th May 2025
34AQI
28th May 2025
33AQI
29th May 2025
36AQI
30th May 2025
30AQI
31st May 2025
34AQI
1st June 2025
56AQI
2nd June 2025
62AQI
3rd June 2025
60AQI
4th June 2025
54AQI
5th June 2025
45AQI
6th June 2025
41AQI
7th June 2025
50AQI
8th June 2025
49AQI
9th June 2025
43AQI
10th June 2025
40AQI
11th June 2025
39AQI
12th June 2025
30AQI
13th June 2025
41AQI
14th June 2025
40AQI
15th June 2025
31AQI
16th June 2025
29AQI
17th June 2025
32AQI
18th June 2025
34AQI
19th June 2025
32AQI
20th June 2025
36AQI
21st June 2025
36AQI
22nd June 2025
36AQI
23rd June 2025
32AQI
24th June 2025
39AQI
25th June 2025
51AQI
26th June 2025
46AQI
27th June 2025
30AQI
28th June 2025
27AQI
29th June 2025
36AQI
30th June 2025
37AQI
1st July 2025
44AQI
2nd July 2025
49AQI
3rd July 2025
42AQI
4th July 2025
43AQI
5th July 2025
37AQI
6th July 2025
29AQI
7th July 2025
34AQI
8th July 2025
37AQI
9th July 2025
36AQI
10th July 2025
32AQI
11th July 2025
32AQI
12th July 2025
35AQI
13th July 2025
36AQI
14th July 2025
35AQI
15th July 2025
34AQI
16th July 2025
42AQI
17th July 2025
36AQI
18th July 2025
33AQI
19th July 2025
36AQI
20th July 2025
40AQI
21st July 2025
40AQI
22nd July 2025
47AQI
23rd July 2025
43AQI
24th July 2025
29AQI
25th July 2025
35AQI
26th July 2025
55AQI
27th July 2025
38AQI
28th July 2025
42AQI
29th July 2025
39AQI
30th July 2025
40AQI
31st July 2025
47AQI
1st August 2025
45AQI
2nd August 2025
33AQI
3rd August 2025
38AQI
4th August 2025
39AQI
5th August 2025
37AQI
6th August 2025
38AQI
7th August 2025
32AQI
8th August 2025
55AQI
9th August 2025
47AQI
10th August 2025
27AQI
11th August 2025
25AQI
12th August 2025
24AQI
13th August 2025
23AQI
14th August 2025
27AQI
15th August 2025
36AQI
16th August 2025
41AQI
17th August 2025
47AQI
18th August 2025
53AQI
19th August 2025
54AQI
20th August 2025
54AQI
21st August 2025
49AQI
22nd August 2025
38AQI
23rd August 2025
26AQI
24th August 2025
30AQI
25th August 2025
34AQI
26th August 2025
46AQI
27th August 2025
47AQI
28th August 2025
42AQI
29th August 2025
49AQI
30th August 2025
44AQI
31st August 2025
40AQI
1st September 2025
28AQI
2nd September 2025
32AQI
3rd September 2025
36AQI
4th September 2025
40AQI
5th September 2025
33AQI
6th September 2025
29AQI
7th September 2025
30AQI
8th September 2025
45AQI
9th September 2025
40AQI
10th September 2025
39AQI
11th September 2025
40AQI
12th September 2025
34AQI
13th September 2025
39AQI
14th September 2025
43AQI
15th September 2025
53AQI
16th September 2025
53AQI
17th September 2025
53AQI
18th September 2025
51AQI
19th September 2025
49AQI
20th September 2025
54AQI
21st September 2025
48AQI
22nd September 2025
44AQI
23rd September 2025
39AQI
24th September 2025
27AQI
25th September 2025
26AQI
26th September 2025
30AQI
27th September 2025
20AQI
28th September 2025
40AQI
29th September 2025
37AQI
30th September 2025
42AQI
1st October 2025
57AQI
2nd October 2025
43AQI
3rd October 2025
38AQI
4th October 2025
33AQI
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

35AQI

43AQI

40AQI

39AQI

38AQI

40AQI

39AQI

39AQI

39AQI

43AQI

No. of days

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

202539AQI

31
21
7
27
4
28
2
29
2
25
5
30
1
27
4
25
5
3
1
246
31

Highest AQI recorded in

October

43AQI

Lowest AQI recorded in

January

35AQI

202435AQI

15
1
1
1
12
29
31
31
25
3
27
4
26
4
30
1
228
13

Highest AQI recorded in

October

41AQI

Lowest AQI recorded in

March

25AQI

202327AQI

3
31
34

Highest AQI recorded in

November

38AQI

Lowest AQI recorded in

December

26AQI

202234AQI

27
4
17
4
26
5
25
31
30
6
162
13

Highest AQI recorded in

February

43AQI

Lowest AQI recorded in

July

25AQI

202135AQI

29
1
25
3
30
1
27
3
28
2
29
1
28
3
25
6
28
2
29
2
28
2
23
8
329
34

Highest AQI recorded in

December

45AQI

Lowest AQI recorded in

June

31AQI

202032AQI

11
28
2
29
1
29
1
26
5
123
9

Highest AQI recorded in

December

38AQI

Lowest AQI recorded in

October

29AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
39AQI
Least Polluted Year Recorded
2023(Avg.)
27AQI

Charleston's annual 2025 AQI (39) shows an average percentage change of 21.7% (worsened AQI) compared to previous years: 2020 (32), 2021 (35), 2022 (34), 2023 (27), 2024 (35).