Preston, Maryland, 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+
August Air Quality Analysis
Preston, Maryland, United States
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
2nd Aug 2025
47AQILowest AQI recorded on
1st Aug 2025
33AQISame Day Analysis (4th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Preston, Maryland, United States
AQI
Day
Night
.
5 AM4th Aug 2025
8 PM
4 AM5th Aug 2025
Day time
Avg. Highest Time
5PM4th Aug
43AQI
Avg. Lowest Time
8AM4th Aug
32AQI
Night time
Avg. Highest Time
9PM4th Aug
47AQI
Avg. Lowest Time
5AM4th Aug
32AQI
In the last 24 hours,
Preston's AQI reached its highest point of 47 at 9 PM during the Night, while the lowest point, 32, was recorded at 8 AM during the Day between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Preston, Maryland, United States
JulAug
06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th
Day
Night
6th Jul 2025365 AMAQI
6th Jul 2025356 AMAQI
6th Jul 2025367 AMAQI
6th Jul 2025368 AMAQI
6th Jul 2025349 AMAQI
6th Jul 20253310 AMAQI
6th Jul 20253311 AMAQI
6th Jul 20253112 PMAQI
6th Jul 2025301 PMAQI
6th Jul 2025312 PMAQI
6th Jul 2025323 PMAQI
6th Jul 2025304 PMAQI
6th Jul 2025285 PMAQI
6th Jul 2025296 PMAQI
6th Jul 2025337 PMAQI
6th Jul 2025338 PMAQI
6th Jul 2025289 PMAQI
6th Jul 20252910 PMAQI
6th Jul 20253011 PMAQI
7th Jul 20253112 AMAQI
7th Jul 2025281 AMAQI
7th Jul 2025282 AMAQI
7th Jul 2025263 AMAQI
7th Jul 2025284 AMAQI
25°C17/32°C
7th Jul 2025285 AMAQI
7th Jul 2025286 AMAQI
7th Jul 2025287 AMAQI
7th Jul 2025298 AMAQI
7th Jul 2025289 AMAQI
7th Jul 20252910 AMAQI
7th Jul 20252711 AMAQI
7th Jul 20252812 PMAQI
7th Jul 2025281 PMAQI
7th Jul 2025302 PMAQI
7th Jul 2025343 PMAQI
7th Jul 2025304 PMAQI
7th Jul 2025285 PMAQI
7th Jul 2025276 PMAQI
7th Jul 2025287 PMAQI
7th Jul 2025278 PMAQI
7th Jul 2025229 PMAQI
7th Jul 20252210 PMAQI
7th Jul 20252411 PMAQI
8th Jul 20252712 AMAQI
8th Jul 2025261 AMAQI
8th Jul 2025252 AMAQI
8th Jul 2025263 AMAQI
8th Jul 2025274 AMAQI
27°C23/32°C
8th Jul 2025295 AMAQI
8th Jul 2025306 AMAQI
8th Jul 2025307 AMAQI
8th Jul 2025318 AMAQI
8th Jul 2025349 AMAQI
8th Jul 20253410 AMAQI
8th Jul 20253511 AMAQI
8th Jul 20253912 PMAQI
8th Jul 2025351 PMAQI
8th Jul 2025342 PMAQI
8th Jul 2025323 PMAQI
8th Jul 2025324 PMAQI
8th Jul 2025325 PMAQI
8th Jul 2025316 PMAQI
8th Jul 2025317 PMAQI
8th Jul 2025308 PMAQI
8th Jul 2025269 PMAQI
8th Jul 20252610 PMAQI
8th Jul 20252611 PMAQI
9th Jul 20252712 AMAQI
9th Jul 2025261 AMAQI
9th Jul 2025252 AMAQI
9th Jul 2025263 AMAQI
9th Jul 2025284 AMAQI
30°C25/36°C
9th Jul 2025295 AMAQI
9th Jul 2025296 AMAQI
9th Jul 2025287 AMAQI
9th Jul 2025278 AMAQI
9th Jul 2025299 AMAQI
9th Jul 20253010 AMAQI
9th Jul 20253111 AMAQI
9th Jul 20252912 PMAQI
9th Jul 2025281 PMAQI
9th Jul 2025272 PMAQI
9th Jul 2025263 PMAQI
9th Jul 2025264 PMAQI
9th Jul 2025285 PMAQI
9th Jul 2025316 PMAQI
9th Jul 2025287 PMAQI
9th Jul 2025298 PMAQI
9th Jul 2025319 PMAQI
9th Jul 20252810 PMAQI
9th Jul 20252811 PMAQI
10th Jul 20252712 AMAQI
10th Jul 2025261 AMAQI
10th Jul 2025252 AMAQI
10th Jul 2025243 AMAQI
10th Jul 2025254 AMAQI
28°C24/34°C
10th Jul 2025275 AMAQI
10th Jul 2025306 AMAQI
10th Jul 2025287 AMAQI
10th Jul 2025258 AMAQI
10th Jul 2025279 AMAQI
10th Jul 20252810 AMAQI
10th Jul 20252811 AMAQI
10th Jul 20252712 PMAQI
10th Jul 2025261 PMAQI
10th Jul 2025272 PMAQI
10th Jul 2025273 PMAQI
10th Jul 2025284 PMAQI
10th Jul 2025285 PMAQI
10th Jul 2025286 PMAQI
10th Jul 2025277 PMAQI
10th Jul 2025268 PMAQI
10th Jul 2025289 PMAQI
10th Jul 20252810 PMAQI
10th Jul 20252811 PMAQI
11th Jul 20252712 AMAQI
11th Jul 2025271 AMAQI
11th Jul 2025302 AMAQI
11th Jul 2025293 AMAQI
11th Jul 2025284 AMAQI
25°C23/26°C
11th Jul 2025295 AMAQI
11th Jul 2025296 AMAQI
11th Jul 2025287 AMAQI
11th Jul 2025288 AMAQI
11th Jul 2025299 AMAQI
11th Jul 20252910 AMAQI
11th Jul 20253011 AMAQI
11th Jul 20253212 PMAQI
11th Jul 2025301 PMAQI
11th Jul 2025292 PMAQI
11th Jul 2025303 PMAQI
11th Jul 2025294 PMAQI
11th Jul 2025285 PMAQI
11th Jul 2025286 PMAQI
11th Jul 2025277 PMAQI
11th Jul 2025278 PMAQI
11th Jul 2025289 PMAQI
11th Jul 20252710 PMAQI
11th Jul 20253011 PMAQI
12th Jul 20252912 AMAQI
12th Jul 2025291 AMAQI
12th Jul 2025302 AMAQI
12th Jul 2025273 AMAQI
12th Jul 2025284 AMAQI
26°C21/30°C
12th Jul 2025275 AMAQI
12th Jul 2025286 AMAQI
12th Jul 2025287 AMAQI
12th Jul 2025278 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20252910 AMAQI
12th Jul 20252911 AMAQI
12th Jul 20252812 PMAQI
12th Jul 2025281 PMAQI
12th Jul 2025292 PMAQI
12th Jul 2025293 PMAQI
12th Jul 2025284 PMAQI
12th Jul 2025285 PMAQI
12th Jul 2025286 PMAQI
12th Jul 2025287 PMAQI
12th Jul 2025288 PMAQI
12th Jul 2025279 PMAQI
12th Jul 20252610 PMAQI
12th Jul 20252611 PMAQI
13th Jul 20252812 AMAQI
13th Jul 2025281 AMAQI
13th Jul 2025262 AMAQI
13th Jul 2025263 AMAQI
13th Jul 2025274 AMAQI
27°C22/32°C
13th Jul 2025275 AMAQI
13th Jul 2025286 AMAQI
13th Jul 2025277 AMAQI
13th Jul 2025278 AMAQI
13th Jul 2025269 AMAQI
13th Jul 20252510 AMAQI
13th Jul 20252311 AMAQI
13th Jul 20252412 PMAQI
13th Jul 2025261 PMAQI
13th Jul 2025272 PMAQI
13th Jul 2025283 PMAQI
13th Jul 2025264 PMAQI
13th Jul 2025265 PMAQI
13th Jul 2025266 PMAQI
13th Jul 2025277 PMAQI
13th Jul 2025278 PMAQI
13th Jul 2025249 PMAQI
13th Jul 20252410 PMAQI
13th Jul 20252511 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025281 AMAQI
14th Jul 2025282 AMAQI
14th Jul 2025323 AMAQI
14th Jul 2025294 AMAQI
26°C22/33°C
14th Jul 2025295 AMAQI
14th Jul 2025296 AMAQI
14th Jul 2025307 AMAQI
14th Jul 2025318 AMAQI
14th Jul 2025309 AMAQI
14th Jul 20253110 AMAQI
14th Jul 20253311 AMAQI
14th Jul 20253212 PMAQI
14th Jul 2025321 PMAQI
14th Jul 2025322 PMAQI
14th Jul 2025313 PMAQI
14th Jul 2025304 PMAQI
14th Jul 2025295 PMAQI
14th Jul 2025276 PMAQI
14th Jul 2025287 PMAQI
14th Jul 2025288 PMAQI
14th Jul 2025279 PMAQI
14th Jul 20252510 PMAQI
14th Jul 20252611 PMAQI
15th Jul 20252712 AMAQI
15th Jul 2025291 AMAQI
15th Jul 2025252 AMAQI
15th Jul 2025263 AMAQI
15th Jul 2025254 AMAQI
27°C24/32°C
15th Jul 2025275 AMAQI
15th Jul 2025276 AMAQI
15th Jul 2025287 AMAQI
15th Jul 2025278 AMAQI
15th Jul 2025279 AMAQI
15th Jul 20252810 AMAQI
15th Jul 20253011 AMAQI
15th Jul 20253012 PMAQI
15th Jul 2025301 PMAQI
15th Jul 2025302 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025294 PMAQI
15th Jul 2025285 PMAQI
15th Jul 2025296 PMAQI
15th Jul 2025307 PMAQI
15th Jul 2025308 PMAQI
15th Jul 2025329 PMAQI
15th Jul 20253310 PMAQI
15th Jul 20253411 PMAQI
16th Jul 20253212 AMAQI
16th Jul 2025311 AMAQI
16th Jul 2025312 AMAQI
16th Jul 2025303 AMAQI
16th Jul 2025314 AMAQI
27°C23/32°C
16th Jul 2025305 AMAQI
16th Jul 2025296 AMAQI
16th Jul 2025307 AMAQI
16th Jul 2025308 AMAQI
16th Jul 2025299 AMAQI
16th Jul 20252910 AMAQI
16th Jul 20253011 AMAQI
16th Jul 20253012 PMAQI
16th Jul 2025321 PMAQI
16th Jul 2025302 PMAQI
16th Jul 2025303 PMAQI
16th Jul 2025294 PMAQI
16th Jul 2025315 PMAQI
16th Jul 2025316 PMAQI
16th Jul 2025327 PMAQI
16th Jul 2025318 PMAQI
16th Jul 2025329 PMAQI
16th Jul 20253310 PMAQI
16th Jul 20253311 PMAQI
17th Jul 20253412 AMAQI
17th Jul 2025331 AMAQI
17th Jul 2025322 AMAQI
17th Jul 2025313 AMAQI
17th Jul 2025324 AMAQI
27°C24/30°C
17th Jul 2025315 AMAQI
17th Jul 2025346 AMAQI
17th Jul 2025377 AMAQI
17th Jul 2025368 AMAQI
17th Jul 2025359 AMAQI
17th Jul 20253410 AMAQI
17th Jul 20253511 AMAQI
17th Jul 20253512 PMAQI
17th Jul 2025361 PMAQI
17th Jul 2025362 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025364 PMAQI
17th Jul 2025375 PMAQI
17th Jul 2025366 PMAQI
17th Jul 2025357 PMAQI
17th Jul 2025368 PMAQI
17th Jul 2025349 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253711 PMAQI
18th Jul 20253612 AMAQI
18th Jul 2025351 AMAQI
18th Jul 2025342 AMAQI
18th Jul 2025323 AMAQI
18th Jul 2025314 AMAQI
30°C25/35°C
18th Jul 2025325 AMAQI
18th Jul 2025326 AMAQI
18th Jul 2025347 AMAQI
18th Jul 2025328 AMAQI
18th Jul 2025329 AMAQI
18th Jul 20253210 AMAQI
18th Jul 20253211 AMAQI
18th Jul 20253312 PMAQI
18th Jul 2025321 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025303 PMAQI
18th Jul 2025314 PMAQI
18th Jul 2025315 PMAQI
18th Jul 2025326 PMAQI
18th Jul 2025327 PMAQI
18th Jul 2025338 PMAQI
18th Jul 2025329 PMAQI
18th Jul 20253210 PMAQI
18th Jul 20253211 PMAQI
19th Jul 20253112 AMAQI
19th Jul 2025301 AMAQI
19th Jul 2025282 AMAQI
19th Jul 2025273 AMAQI
19th Jul 2025274 AMAQI
28°C26/32°C
19th Jul 2025285 AMAQI
19th Jul 2025306 AMAQI
19th Jul 2025317 AMAQI
19th Jul 2025308 AMAQI
19th Jul 2025289 AMAQI
19th Jul 20252810 AMAQI
19th Jul 20252911 AMAQI
19th Jul 20252912 PMAQI
19th Jul 2025301 PMAQI
19th Jul 2025312 PMAQI
19th Jul 2025313 PMAQI
19th Jul 2025294 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025296 PMAQI
19th Jul 2025307 PMAQI
19th Jul 2025308 PMAQI
19th Jul 2025299 PMAQI
19th Jul 20252910 PMAQI
19th Jul 20252811 PMAQI
20th Jul 20252612 AMAQI
20th Jul 2025271 AMAQI
20th Jul 2025312 AMAQI
20th Jul 2025343 AMAQI
20th Jul 2025374 AMAQI
27°C23/30°C
20th Jul 2025345 AMAQI
20th Jul 2025376 AMAQI
20th Jul 2025367 AMAQI
20th Jul 2025368 AMAQI
20th Jul 2025339 AMAQI
20th Jul 20253210 AMAQI
20th Jul 20253111 AMAQI
20th Jul 20253212 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025342 PMAQI
20th Jul 2025333 PMAQI
20th Jul 2025314 PMAQI
20th Jul 2025305 PMAQI
20th Jul 2025306 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025328 PMAQI
20th Jul 2025329 PMAQI
20th Jul 20253210 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253312 AMAQI
21st Jul 2025331 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025283 AMAQI
21st Jul 2025284 AMAQI
28°C24/32°C
21st Jul 2025285 AMAQI
21st Jul 2025306 AMAQI
21st Jul 2025317 AMAQI
21st Jul 2025328 AMAQI
21st Jul 2025329 AMAQI
21st Jul 20253210 AMAQI
21st Jul 20253111 AMAQI
21st Jul 20252912 PMAQI
21st Jul 2025301 PMAQI
21st Jul 2025292 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025314 PMAQI
21st Jul 2025305 PMAQI
21st Jul 2025326 PMAQI
21st Jul 2025307 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253410 PMAQI
21st Jul 20253511 PMAQI
22nd Jul 20253612 AMAQI
22nd Jul 2025371 AMAQI
22nd Jul 2025342 AMAQI
22nd Jul 2025333 AMAQI
22nd Jul 2025334 AMAQI
27°C23/30°C
22nd Jul 2025335 AMAQI
22nd Jul 2025336 AMAQI
22nd Jul 2025347 AMAQI
22nd Jul 2025348 AMAQI
22nd Jul 2025339 AMAQI
22nd Jul 20253110 AMAQI
22nd Jul 20253111 AMAQI
22nd Jul 20253212 PMAQI
22nd Jul 2025321 PMAQI
22nd Jul 2025322 PMAQI
22nd Jul 2025343 PMAQI
22nd Jul 2025344 PMAQI
22nd Jul 2025355 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025357 PMAQI
22nd Jul 2025358 PMAQI
22nd Jul 2025349 PMAQI
22nd Jul 20253410 PMAQI
22nd Jul 20253511 PMAQI
23rd Jul 20253412 AMAQI
23rd Jul 2025331 AMAQI
23rd Jul 2025332 AMAQI
23rd Jul 2025333 AMAQI
23rd Jul 2025414 AMAQI
25°C19/32°C
23rd Jul 2025445 AMAQI
23rd Jul 2025466 AMAQI
23rd Jul 2025507 AMAQI
23rd Jul 2025478 AMAQI
23rd Jul 2025499 AMAQI
23rd Jul 20254410 AMAQI
23rd Jul 20254511 AMAQI
23rd Jul 20254312 PMAQI
23rd Jul 2025411 PMAQI
23rd Jul 2025412 PMAQI
23rd Jul 2025413 PMAQI
23rd Jul 2025424 PMAQI
23rd Jul 2025415 PMAQI
23rd Jul 2025416 PMAQI
23rd Jul 2025427 PMAQI
23rd Jul 2025428 PMAQI
23rd Jul 2025399 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253911 PMAQI
24th Jul 20253912 AMAQI
24th Jul 2025351 AMAQI
24th Jul 2025342 AMAQI
24th Jul 2025363 AMAQI
24th Jul 2025384 AMAQI
24°C19/29°C
24th Jul 2025395 AMAQI
24th Jul 2025396 AMAQI
24th Jul 2025417 AMAQI
24th Jul 2025428 AMAQI
24th Jul 2025409 AMAQI
24th Jul 20254210 AMAQI
24th Jul 20254211 AMAQI
24th Jul 20254212 PMAQI
24th Jul 2025411 PMAQI
24th Jul 2025412 PMAQI
24th Jul 2025413 PMAQI
24th Jul 2025414 PMAQI
24th Jul 2025405 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025387 PMAQI
24th Jul 2025398 PMAQI
24th Jul 2025419 PMAQI
24th Jul 20254310 PMAQI
24th Jul 20254511 PMAQI
25th Jul 20254612 AMAQI
25th Jul 2025461 AMAQI
25th Jul 2025472 AMAQI
25th Jul 2025473 AMAQI
25th Jul 2025494 AMAQI
26°C19/33°C
25th Jul 2025505 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025487 AMAQI
25th Jul 2025488 AMAQI
25th Jul 2025509 AMAQI
25th Jul 20255210 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20255212 PMAQI
25th Jul 2025511 PMAQI
25th Jul 2025522 PMAQI
25th Jul 2025513 PMAQI
25th Jul 2025504 PMAQI
25th Jul 2025485 PMAQI
25th Jul 2025476 PMAQI
25th Jul 2025497 PMAQI
25th Jul 2025488 PMAQI
25th Jul 2025459 PMAQI
25th Jul 20254310 PMAQI
25th Jul 20254411 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025431 AMAQI
26th Jul 2025362 AMAQI
26th Jul 2025353 AMAQI
26th Jul 2025394 AMAQI
30°C24/36°C
26th Jul 2025375 AMAQI
26th Jul 2025366 AMAQI
26th Jul 2025357 AMAQI
26th Jul 2025358 AMAQI
26th Jul 2025299 AMAQI
26th Jul 20252910 AMAQI
26th Jul 20252811 AMAQI
26th Jul 20253312 PMAQI
26th Jul 2025361 PMAQI
26th Jul 2025362 PMAQI
26th Jul 2025373 PMAQI
26th Jul 2025364 PMAQI
26th Jul 2025365 PMAQI
26th Jul 2025376 PMAQI
26th Jul 2025367 PMAQI
26th Jul 2025368 PMAQI
26th Jul 2025409 PMAQI
26th Jul 20254010 PMAQI
26th Jul 20253811 PMAQI
27th Jul 20254112 AMAQI
27th Jul 2025421 AMAQI
27th Jul 2025402 AMAQI
27th Jul 2025383 AMAQI
27th Jul 2025394 AMAQI
28°C24/34°C
27th Jul 2025375 AMAQI
27th Jul 2025366 AMAQI
27th Jul 2025397 AMAQI
27th Jul 2025378 AMAQI
27th Jul 2025379 AMAQI
27th Jul 20253510 AMAQI
27th Jul 20253411 AMAQI
27th Jul 20253412 PMAQI
27th Jul 2025331 PMAQI
27th Jul 2025322 PMAQI
27th Jul 2025343 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025357 PMAQI
27th Jul 2025348 PMAQI
27th Jul 2025319 PMAQI
27th Jul 20253210 PMAQI
27th Jul 20253111 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025232 AMAQI
28th Jul 2025233 AMAQI
28th Jul 2025244 AMAQI
28°C22/34°C
28th Jul 2025255 AMAQI
28th Jul 2025256 AMAQI
28th Jul 2025247 AMAQI
28th Jul 2025268 AMAQI
28th Jul 2025289 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20253011 AMAQI
28th Jul 20253412 PMAQI
28th Jul 2025321 PMAQI
28th Jul 2025312 PMAQI
28th Jul 2025323 PMAQI
28th Jul 2025304 PMAQI
28th Jul 2025305 PMAQI
28th Jul 2025306 PMAQI
28th Jul 2025277 PMAQI
28th Jul 2025278 PMAQI
28th Jul 2025279 PMAQI
28th Jul 20252810 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20253012 AMAQI
29th Jul 2025331 AMAQI
29th Jul 2025332 AMAQI
29th Jul 2025323 AMAQI
29th Jul 2025314 AMAQI
30°C24/35°C
29th Jul 2025325 AMAQI
29th Jul 2025346 AMAQI
29th Jul 2025337 AMAQI
29th Jul 2025328 AMAQI
29th Jul 2025359 AMAQI
29th Jul 20253610 AMAQI
29th Jul 20253711 AMAQI
29th Jul 20253912 PMAQI
29th Jul 2025391 PMAQI
29th Jul 2025392 PMAQI
29th Jul 2025383 PMAQI
29th Jul 2025384 PMAQI
29th Jul 2025365 PMAQI
29th Jul 2025356 PMAQI
29th Jul 2025347 PMAQI
29th Jul 2025318 PMAQI
29th Jul 2025409 PMAQI
29th Jul 20253710 PMAQI
29th Jul 20253611 PMAQI
30th Jul 20253612 AMAQI
30th Jul 2025361 AMAQI
30th Jul 2025342 AMAQI
30th Jul 2025343 AMAQI
30th Jul 2025364 AMAQI
30°C25/35°C
30th Jul 2025365 AMAQI
30th Jul 2025356 AMAQI
30th Jul 2025367 AMAQI
30th Jul 2025368 AMAQI
30th Jul 2025369 AMAQI
30th Jul 20253510 AMAQI
30th Jul 20253811 AMAQI
30th Jul 20254012 PMAQI
30th Jul 2025381 PMAQI
30th Jul 2025372 PMAQI
30th Jul 2025373 PMAQI
30th Jul 2025354 PMAQI
30th Jul 2025375 PMAQI
30th Jul 2025376 PMAQI
30th Jul 2025387 PMAQI
30th Jul 2025378 PMAQI
30th Jul 2025349 PMAQI
30th Jul 20253510 PMAQI
30th Jul 20253511 PMAQI
31st Jul 20253712 AMAQI
31st Jul 2025351 AMAQI
31st Jul 2025382 AMAQI
31st Jul 2025393 AMAQI
31st Jul 2025404 AMAQI
30°C26/36°C
31st Jul 2025425 AMAQI
31st Jul 2025436 AMAQI
31st Jul 2025427 AMAQI
31st Jul 2025428 AMAQI
31st Jul 2025429 AMAQI
31st Jul 20254210 AMAQI
31st Jul 20254211 AMAQI
31st Jul 20254212 PMAQI
31st Jul 2025411 PMAQI
31st Jul 2025382 PMAQI
31st Jul 2025363 PMAQI
31st Jul 2025314 PMAQI
31st Jul 2025285 PMAQI
31st Jul 2025286 PMAQI
31st Jul 2025417 PMAQI
31st Jul 2025378 PMAQI
31st Jul 2025339 PMAQI
31st Jul 20252910 PMAQI
31st Jul 20253011 PMAQI
1st Aug 20253212 AMAQI
1st Aug 2025331 AMAQI
1st Aug 2025352 AMAQI
1st Aug 2025383 AMAQI
1st Aug 2025404 AMAQI
28°C24/34°C
1st Aug 2025395 AMAQI
1st Aug 2025386 AMAQI
1st Aug 2025387 AMAQI
1st Aug 2025388 AMAQI
1st Aug 2025329 AMAQI
1st Aug 20253110 AMAQI
1st Aug 20253011 AMAQI
1st Aug 20253212 PMAQI
1st Aug 2025331 PMAQI
1st Aug 2025312 PMAQI
1st Aug 2025313 PMAQI
1st Aug 2025304 PMAQI
1st Aug 2025285 PMAQI
1st Aug 2025286 PMAQI
1st Aug 2025317 PMAQI
1st Aug 2025308 PMAQI
1st Aug 2025299 PMAQI
1st Aug 20252910 PMAQI
1st Aug 20252911 PMAQI
2nd Aug 20253012 AMAQI
2nd Aug 2025301 AMAQI
2nd Aug 2025282 AMAQI
2nd Aug 2025293 AMAQI
2nd Aug 2025304 AMAQI
22°C20/23°C
2nd Aug 2025325 AMAQI
2nd Aug 2025346 AMAQI
2nd Aug 2025347 AMAQI
2nd Aug 2025338 AMAQI
2nd Aug 2025329 AMAQI
2nd Aug 20253310 AMAQI
2nd Aug 20253211 AMAQI
2nd Aug 20253212 PMAQI
2nd Aug 2025331 PMAQI
2nd Aug 2025322 PMAQI
2nd Aug 2025303 PMAQI
2nd Aug 2025294 PMAQI
2nd Aug 2025295 PMAQI
2nd Aug 2025296 PMAQI
2nd Aug 2025337 PMAQI
2nd Aug 2025338 PMAQI
2nd Aug 2025359 PMAQI
2nd Aug 20253810 PMAQI
2nd Aug 20253911 PMAQI
3rd Aug 20253612 AMAQI
3rd Aug 2025331 AMAQI
3rd Aug 2025372 AMAQI
3rd Aug 2025353 AMAQI
3rd Aug 2025344 AMAQI
22°C17/26°C
3rd Aug 2025335 AMAQI
3rd Aug 2025296 AMAQI
3rd Aug 2025307 AMAQI
3rd Aug 2025308 AMAQI
3rd Aug 2025319 AMAQI
3rd Aug 20252910 AMAQI
3rd Aug 20253011 AMAQI
3rd Aug 20252712 PMAQI
3rd Aug 2025271 PMAQI
3rd Aug 2025282 PMAQI
3rd Aug 2025273 PMAQI
3rd Aug 2025284 PMAQI
3rd Aug 2025285 PMAQI
3rd Aug 2025286 PMAQI
3rd Aug 2025297 PMAQI
3rd Aug 2025298 PMAQI
3rd Aug 2025299 PMAQI
3rd Aug 20252910 PMAQI
3rd Aug 20253211 PMAQI
4th Aug 20253412 AMAQI
4th Aug 2025341 AMAQI
4th Aug 2025332 AMAQI
4th Aug 2025343 AMAQI
4th Aug 2025334 AMAQI
22°C15/29°C
4th Aug 2025325 AMAQI
4th Aug 2025326 AMAQI
4th Aug 2025327 AMAQI
4th Aug 2025328 AMAQI
4th Aug 2025339 AMAQI
4th Aug 20253510 AMAQI
4th Aug 20253511 AMAQI
4th Aug 20253512 PMAQI
4th Aug 2025361 PMAQI
4th Aug 2025372 PMAQI
4th Aug 2025393 PMAQI
4th Aug 2025414 PMAQI
4th Aug 2025435 PMAQI
4th Aug 2025436 PMAQI
4th Aug 2025347 PMAQI
4th Aug 2025418 PMAQI
4th Aug 2025479 PMAQI
4th Aug 20254610 PMAQI
4th Aug 20254511 PMAQI
5th Aug 20254512 AMAQI
5th Aug 2025441 AMAQI
5th Aug 2025442 AMAQI
5th Aug 2025443 AMAQI
5th Aug 2025454 AMAQI
24°C15/31°C
5th Aug 2025435 AMAQI
5 AM5th Aug 2025396 AMAQI
5th Aug 2025237 AMAQI
5th Aug 2025248 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20252610 AMAQI
5th Aug 20252411 AMAQI
5th Aug 20252612 PMAQI
12 PM8 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 8 PM
33AQI
16 hours / Day
480 hours / Month
Avg. Lowest Time
5 AM - 8 PM
33AQI
16 hours / Day
480 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 8 PM (Avg. 33), while the lowest AQI was between 5 AM to 8 PM (Avg. 33).
Night time
Avg. Highest Time
12 AM - 11 PM
33AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
33AQI
8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 33), while the lowest AQI was between 12 AM to 11 PM (Avg. 33).
2025 Days Vs Air Quality
Preston, Maryland, United States
2025
89%
117
11%
14
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
117 DaysModerate
14 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 217 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
Preston, Maryland, 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 March 2025
20AQI
20AQI
2nd March 2025
31AQI
31AQI
3rd March 2025
56AQI
56AQI
4th March 2025
37AQI
37AQI
5th March 2025
29AQI
29AQI
1st April 2025
20AQI
20AQI
2nd April 2025
23AQI
23AQI
3rd April 2025
35AQI
35AQI
4th April 2025
32AQI
32AQI
5th April 2025
38AQI
38AQI
6th April 2025
35AQI
35AQI
7th April 2025
21AQI
21AQI
8th April 2025
29AQI
29AQI
9th April 2025
19AQI
19AQI
10th April 2025
24AQI
24AQI
11th April 2025
23AQI
23AQI
12th April 2025
14AQI
14AQI
13th April 2025
19AQI
19AQI
14th April 2025
30AQI
30AQI
15th April 2025
38AQI
38AQI
16th April 2025
14AQI
14AQI
17th April 2025
18AQI
18AQI
18th April 2025
32AQI
32AQI
19th April 2025
50AQI
50AQI
20th April 2025
47AQI
47AQI
21st April 2025
30AQI
30AQI
22nd April 2025
39AQI
39AQI
23rd April 2025
29AQI
29AQI
24th April 2025
37AQI
37AQI
25th April 2025
28AQI
28AQI
26th April 2025
36AQI
36AQI
27th April 2025
14AQI
14AQI
28th April 2025
18AQI
18AQI
29th April 2025
25AQI
25AQI
30th April 2025
38AQI
38AQI
1st May 2025
40AQI
40AQI
2nd May 2025
48AQI
48AQI
3rd May 2025
44AQI
44AQI
4th May 2025
27AQI
27AQI
5th May 2025
26AQI
26AQI
6th May 2025
24AQI
24AQI
7th May 2025
21AQI
21AQI
8th May 2025
28AQI
28AQI
9th May 2025
25AQI
25AQI
10th May 2025
19AQI
19AQI
11th May 2025
28AQI
28AQI
12th May 2025
32AQI
32AQI
13th May 2025
23AQI
23AQI
14th May 2025
35AQI
35AQI
15th May 2025
31AQI
31AQI
16th May 2025
45AQI
45AQI
17th May 2025
32AQI
32AQI
18th May 2025
19AQI
19AQI
19th May 2025
22AQI
22AQI
20th May 2025
19AQI
19AQI
21st May 2025
17AQI
17AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
16AQI
16AQI
24th May 2025
14AQI
14AQI
25th May 2025
16AQI
16AQI
26th May 2025
20AQI
20AQI
27th May 2025
22AQI
22AQI
28th May 2025
16AQI
16AQI
29th May 2025
21AQI
21AQI
30th May 2025
30AQI
30AQI
31st May 2025
31AQI
31AQI
1st June 2025
20AQI
20AQI
2nd June 2025
23AQI
23AQI
3rd June 2025
26AQI
26AQI
4th June 2025
40AQI
40AQI
5th June 2025
44AQI
44AQI
6th June 2025
40AQI
40AQI
7th June 2025
29AQI
29AQI
8th June 2025
33AQI
33AQI
9th June 2025
28AQI
28AQI
10th June 2025
42AQI
42AQI
11th June 2025
53AQI
53AQI
12th June 2025
63AQI
63AQI
13th June 2025
63AQI
63AQI
14th June 2025
56AQI
56AQI
15th June 2025
43AQI
43AQI
16th June 2025
33AQI
33AQI
17th June 2025
26AQI
26AQI
18th June 2025
29AQI
29AQI
19th June 2025
28AQI
28AQI
20th June 2025
27AQI
27AQI
21st June 2025
43AQI
43AQI
22nd June 2025
46AQI
46AQI
23rd June 2025
55AQI
55AQI
24th June 2025
58AQI
58AQI
25th June 2025
58AQI
58AQI
26th June 2025
52AQI
52AQI
27th June 2025
40AQI
40AQI
28th June 2025
32AQI
32AQI
29th June 2025
48AQI
48AQI
30th June 2025
43AQI
43AQI
1st July 2025
43AQI
43AQI
2nd July 2025
24AQI
24AQI
3rd July 2025
36AQI
36AQI
4th July 2025
54AQI
54AQI
5th July 2025
64AQI
64AQI
6th July 2025
49AQI
49AQI
7th July 2025
32AQI
32AQI
8th July 2025
37AQI
37AQI
9th July 2025
31AQI
31AQI
10th July 2025
27AQI
27AQI
11th July 2025
30AQI
30AQI
12th July 2025
27AQI
27AQI
13th July 2025
25AQI
25AQI
14th July 2025
24AQI
24AQI
15th July 2025
22AQI
22AQI
16th July 2025
28AQI
28AQI
17th July 2025
28AQI
28AQI
18th July 2025
30AQI
30AQI
19th July 2025
28AQI
28AQI
20th July 2025
22AQI
22AQI
21st July 2025
30AQI
30AQI
22nd July 2025
56AQI
56AQI
23rd July 2025
48AQI
48AQI
24th July 2025
32AQI
32AQI
25th July 2025
41AQI
41AQI
26th July 2025
42AQI
42AQI
27th July 2025
55AQI
55AQI
28th July 2025
31AQI
31AQI
29th July 2025
49AQI
49AQI
30th July 2025
51AQI
51AQI
31st July 2025
43AQI
43AQI
1st August 2025
33AQI
33AQI
2nd August 2025
47AQI
47AQI
3rd August 2025
40AQI
40AQI
4th August 2025
44AQI
44AQI
35AQI
29AQI
26AQI
41AQI
37AQI
41AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202533AQI
4
1
30
31
22
8
26
5
4
117
14
Highest AQI recorded in
August41AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 1 Years
Most Polluted Year Recorded
2025(Avg.)
33AQILeast Polluted Year Recorded
2025(Avg.)
33AQIPreston's annual 2025 AQI (33) shows an average percentage change of NaN% (improved AQI) compared to previous years: .
