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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Hagerstown, Halfway, 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

Hagerstown, Halfway, Maryland, United States

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
7th Aug 2025
72AQI
Lowest AQI recorded on
8th Aug 2024
13AQI

Same Day Analysis (16th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 40 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 16th Aug - 17th Aug 2026

Hagerstown, Halfway, Maryland, United States

AQI
Day
Night
.

6 AM16th Aug 2026

8 PM

5 AM17th Aug 2026

Day time
Avg. Highest Time
8AM16th Aug

54AQI

Avg. Lowest Time
8PM16th Aug

29AQI

Night time
Avg. Highest Time
9PM16th Aug

33AQI

Avg. Lowest Time
3AM17th Aug

21AQI

In the last 24 hours,

Hagerstown's AQI reached its highest point of 54 at 8 AM during the Day, while the lowest point, 21, was recorded at 3 AM during the Night between 16th Aug and 17th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Hagerstown, Halfway, Maryland, United States

JulAug
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th
Day
Night
19th Jul 2026536 AMAQI
19th Jul 2026517 AMAQI
19th Jul 2026558 AMAQI
19th Jul 2026549 AMAQI
19th Jul 20265410 AMAQI
19th Jul 20267611 AMAQI
19th Jul 20268112 PMAQI
19th Jul 2026921 PMAQI
19th Jul 2026842 PMAQI
19th Jul 2026833 PMAQI
19th Jul 2026854 PMAQI
19th Jul 2026735 PMAQI
19th Jul 2026806 PMAQI
19th Jul 2026627 PMAQI
19th Jul 2026698 PMAQI
19th Jul 2026629 PMAQI
19th Jul 20266610 PMAQI
19th Jul 20265911 PMAQI
20th Jul 20266512 AMAQI
20th Jul 2026631 AMAQI
20th Jul 2026412 AMAQI
20th Jul 2026543 AMAQI
20th Jul 2026554 AMAQI
20th Jul 2026555 AMAQI

26°C21/32°C

20th Jul 2026606 AMAQI
20th Jul 2026507 AMAQI
20th Jul 2026588 AMAQI
20th Jul 2026659 AMAQI
20th Jul 20266210 AMAQI
20th Jul 20266711 AMAQI
20th Jul 20266412 PMAQI
20th Jul 2026551 PMAQI
20th Jul 2026602 PMAQI
20th Jul 2026533 PMAQI
20th Jul 2026594 PMAQI
20th Jul 2026575 PMAQI
20th Jul 2026626 PMAQI
20th Jul 2026517 PMAQI
20th Jul 2026598 PMAQI
20th Jul 2026589 PMAQI
20th Jul 20265910 PMAQI
21st Jul 20266012 AMAQI
21st Jul 2026641 AMAQI
21st Jul 2026622 AMAQI
21st Jul 2026653 AMAQI
21st Jul 2026674 AMAQI
21st Jul 2026665 AMAQI

24°C16/32°C

21st Jul 2026656 AMAQI
21st Jul 2026637 AMAQI
21st Jul 2026668 AMAQI
21st Jul 2026649 AMAQI
21st Jul 20266010 AMAQI
21st Jul 20264811 AMAQI
21st Jul 20264412 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026442 PMAQI
21st Jul 2026533 PMAQI
21st Jul 2026504 PMAQI
21st Jul 2026505 PMAQI
21st Jul 2026466 PMAQI
21st Jul 2026407 PMAQI
21st Jul 2026488 PMAQI
21st Jul 2026429 PMAQI
21st Jul 20264010 PMAQI
21st Jul 20264211 PMAQI
22nd Jul 20263612 AMAQI
22nd Jul 2026121 AMAQI
22nd Jul 2026332 AMAQI
22nd Jul 2026403 AMAQI
22nd Jul 2026124 AMAQI
22nd Jul 2026155 AMAQI

27°C23/37°C

22nd Jul 2026146 AMAQI
22nd Jul 2026147 AMAQI
22nd Jul 2026158 AMAQI
22nd Jul 2026149 AMAQI
22nd Jul 20261510 AMAQI
22nd Jul 20261611 AMAQI
22nd Jul 20262112 PMAQI
22nd Jul 2026211 PMAQI
22nd Jul 2026162 PMAQI
22nd Jul 2026173 PMAQI
22nd Jul 2026194 PMAQI
22nd Jul 2026145 PMAQI
22nd Jul 2026146 PMAQI
22nd Jul 2026167 PMAQI
22nd Jul 2026148 PMAQI
22nd Jul 2026179 PMAQI
22nd Jul 20262510 PMAQI
22nd Jul 20262511 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026292 AMAQI
23rd Jul 2026423 AMAQI
23rd Jul 2026214 AMAQI
23rd Jul 2026295 AMAQI

25°C20/32°C

23rd Jul 2026256 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026298 AMAQI
23rd Jul 2026259 AMAQI
23rd Jul 20262910 AMAQI
23rd Jul 20264211 AMAQI
23rd Jul 20263812 PMAQI
23rd Jul 2026101 PMAQI
23rd Jul 2026122 PMAQI
23rd Jul 2026123 PMAQI
23rd Jul 2026204 PMAQI
23rd Jul 2026295 PMAQI
23rd Jul 2026256 PMAQI
23rd Jul 2026107 PMAQI
23rd Jul 2026258 PMAQI
23rd Jul 2026219 PMAQI
23rd Jul 20262410 PMAQI
23rd Jul 20262911 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026422 AMAQI
24th Jul 2026333 AMAQI
24th Jul 2026274 AMAQI
24th Jul 2026325 AMAQI

22°C16/30°C

24th Jul 2026426 AMAQI
24th Jul 2026387 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026339 AMAQI
24th Jul 20262910 AMAQI
24th Jul 20264211 AMAQI
24th Jul 20263812 PMAQI
24th Jul 2026331 PMAQI
24th Jul 2026422 PMAQI
24th Jul 2026213 PMAQI
24th Jul 2026294 PMAQI
24th Jul 2026255 PMAQI
24th Jul 2026216 PMAQI
24th Jul 2026387 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026219 PMAQI
24th Jul 20262510 PMAQI
24th Jul 20263211 PMAQI
25th Jul 20263812 AMAQI
25th Jul 2026331 AMAQI
25th Jul 2026212 AMAQI
25th Jul 2026173 AMAQI
25th Jul 2026174 AMAQI
25th Jul 2026205 AMAQI

22°C14/30°C

25th Jul 2026226 AMAQI
25th Jul 2026207 AMAQI
25th Jul 2026208 AMAQI
25th Jul 2026209 AMAQI
25th Jul 20262010 AMAQI
25th Jul 20262911 AMAQI
25th Jul 20262112 PMAQI
25th Jul 2026301 PMAQI
25th Jul 2026382 PMAQI
25th Jul 2026293 PMAQI
25th Jul 2026464 PMAQI
25th Jul 2026365 PMAQI
25th Jul 2026466 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026298 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20262911 PMAQI
26th Jul 20262912 AMAQI
26th Jul 2026231 AMAQI
26th Jul 2026382 AMAQI
26th Jul 2026333 AMAQI
26th Jul 2026404 AMAQI
26th Jul 2026385 AMAQI

24°C18/30°C

26th Jul 2026316 AMAQI
26th Jul 2026347 AMAQI
26th Jul 2026298 AMAQI
26th Jul 2026369 AMAQI
26th Jul 20262910 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20263212 PMAQI
26th Jul 2026271 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026216 PMAQI
26th Jul 2026217 PMAQI
26th Jul 2026238 PMAQI
26th Jul 2026429 PMAQI
26th Jul 20264010 PMAQI
26th Jul 20264411 PMAQI
27th Jul 20263812 AMAQI
27th Jul 2026461 AMAQI
27th Jul 2026422 AMAQI
27th Jul 2026403 AMAQI
27th Jul 2026364 AMAQI
27th Jul 2026365 AMAQI

25°C19/33°C

27th Jul 2026346 AMAQI
27th Jul 2026407 AMAQI
27th Jul 2026408 AMAQI
27th Jul 2026409 AMAQI
27th Jul 20263410 AMAQI
27th Jul 20263611 AMAQI
27th Jul 20263612 PMAQI
27th Jul 2026381 PMAQI
27th Jul 2026382 PMAQI
27th Jul 2026403 PMAQI
27th Jul 2026444 PMAQI
27th Jul 2026495 PMAQI
27th Jul 2026426 PMAQI
27th Jul 2026467 PMAQI
27th Jul 2026488 PMAQI
27th Jul 2026469 PMAQI
27th Jul 20264610 PMAQI
27th Jul 20264411 PMAQI
28th Jul 20264212 AMAQI
28th Jul 2026511 AMAQI
28th Jul 2026532 AMAQI
28th Jul 2026523 AMAQI
28th Jul 2026544 AMAQI
28th Jul 2026495 AMAQI

26°C20/32°C

28th Jul 2026466 AMAQI
28th Jul 2026427 AMAQI
28th Jul 2026488 AMAQI
28th Jul 2026529 AMAQI
28th Jul 20265310 AMAQI
28th Jul 20265111 AMAQI
28th Jul 20265312 PMAQI
28th Jul 2026511 PMAQI
28th Jul 2026542 PMAQI
28th Jul 2026533 PMAQI
28th Jul 2026584 PMAQI
28th Jul 2026525 PMAQI
28th Jul 2026466 PMAQI
28th Jul 2026407 PMAQI
28th Jul 2026368 PMAQI
28th Jul 2026429 PMAQI
28th Jul 20262510 PMAQI
28th Jul 20262711 PMAQI
29th Jul 20262512 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026273 AMAQI
29th Jul 2026384 AMAQI
29th Jul 2026365 AMAQI

25°C22/31°C

29th Jul 2026386 AMAQI
29th Jul 2026407 AMAQI
29th Jul 2026488 AMAQI
29th Jul 2026469 AMAQI
29th Jul 20264610 AMAQI
29th Jul 20264811 AMAQI
29th Jul 20264012 PMAQI
29th Jul 2026341 PMAQI
29th Jul 2026232 PMAQI
29th Jul 2026503 PMAQI
29th Jul 2026254 PMAQI
29th Jul 2026235 PMAQI
29th Jul 2026216 PMAQI
29th Jul 2026317 PMAQI
29th Jul 2026258 PMAQI
29th Jul 2026239 PMAQI
29th Jul 20263610 PMAQI
29th Jul 20262711 PMAQI
30th Jul 20261712 AMAQI
30th Jul 2026211 AMAQI
30th Jul 2026272 AMAQI
30th Jul 2026233 AMAQI
30th Jul 2026274 AMAQI
30th Jul 2026215 AMAQI

24°C19/28°C

30th Jul 2026166 AMAQI
30th Jul 2026257 AMAQI
30th Jul 2026178 AMAQI
30th Jul 2026259 AMAQI
30th Jul 20262510 AMAQI
30th Jul 20262511 AMAQI
30th Jul 20261212 PMAQI
30th Jul 2026121 PMAQI
30th Jul 2026142 PMAQI
30th Jul 2026123 PMAQI
30th Jul 2026164 PMAQI
30th Jul 2026145 PMAQI
30th Jul 2026116 PMAQI
30th Jul 2026147 PMAQI
30th Jul 2026148 PMAQI
30th Jul 2026259 PMAQI
30th Jul 20263310 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20262512 AMAQI
31st Jul 2026181 AMAQI
31st Jul 2026212 AMAQI
31st Jul 2026383 AMAQI
31st Jul 2026294 AMAQI
31st Jul 2026385 AMAQI

24°C17/31°C

31st Jul 2026426 AMAQI
31st Jul 2026387 AMAQI
31st Jul 2026318 AMAQI
31st Jul 2026509 AMAQI
31st Jul 20264910 AMAQI
31st Jul 20265611 AMAQI
31st Jul 20263212 PMAQI
31st Jul 2026251 PMAQI
31st Jul 2026232 PMAQI
31st Jul 2026213 PMAQI
31st Jul 2026274 PMAQI
31st Jul 2026305 PMAQI
31st Jul 2026366 PMAQI
31st Jul 2026327 PMAQI
31st Jul 2026258 PMAQI
31st Jul 2026219 PMAQI
31st Jul 20262510 PMAQI
31st Jul 20264011 PMAQI
1st Aug 20264012 AMAQI
1st Aug 2026321 AMAQI
1st Aug 2026342 AMAQI
1st Aug 2026363 AMAQI
1st Aug 2026254 AMAQI
1st Aug 2026255 AMAQI

25°C18/34°C

1st Aug 2026366 AMAQI
1st Aug 2026347 AMAQI
1st Aug 2026218 AMAQI
1st Aug 2026349 AMAQI
1st Aug 20262710 AMAQI
1st Aug 20264211 AMAQI
1st Aug 20263212 PMAQI
1st Aug 2026361 PMAQI
1st Aug 2026232 PMAQI
1st Aug 2026213 PMAQI
1st Aug 2026214 PMAQI
1st Aug 2026345 PMAQI
1st Aug 2026366 PMAQI
1st Aug 2026327 PMAQI
1st Aug 2026348 PMAQI
1st Aug 2026349 PMAQI
1st Aug 20263610 PMAQI
1st Aug 20264411 PMAQI
2nd Aug 20264712 AMAQI
2nd Aug 2026461 AMAQI
2nd Aug 2026462 AMAQI
2nd Aug 2026383 AMAQI
2nd Aug 2026444 AMAQI
2nd Aug 2026405 AMAQI

26°C18/33°C

2nd Aug 2026406 AMAQI
2nd Aug 2026257 AMAQI
2nd Aug 2026368 AMAQI
2nd Aug 2026259 AMAQI
2nd Aug 20262510 AMAQI
2nd Aug 20263811 AMAQI
2nd Aug 20263612 PMAQI
2nd Aug 2026361 PMAQI
2nd Aug 2026462 PMAQI
2nd Aug 2026423 PMAQI
2nd Aug 2026154 PMAQI
2nd Aug 2026325 PMAQI
2nd Aug 2026386 PMAQI
2nd Aug 2026347 PMAQI
2nd Aug 2026348 PMAQI
2nd Aug 2026219 PMAQI
2nd Aug 20263410 PMAQI
2nd Aug 20262211 PMAQI
3rd Aug 20262912 AMAQI
3rd Aug 2026321 AMAQI
3rd Aug 2026312 AMAQI
3rd Aug 2026253 AMAQI
3rd Aug 2026274 AMAQI
3rd Aug 2026385 AMAQI

26°C23/30°C

3rd Aug 2026176 AMAQI
3rd Aug 2026197 AMAQI
3rd Aug 2026368 AMAQI
3rd Aug 2026369 AMAQI
3rd Aug 20263410 AMAQI
3rd Aug 20263611 AMAQI
3rd Aug 20264012 PMAQI
3rd Aug 2026401 PMAQI
3rd Aug 2026402 PMAQI
3rd Aug 2026323 PMAQI
3rd Aug 2026384 PMAQI
3rd Aug 2026245 PMAQI
3rd Aug 2026206 PMAQI
3rd Aug 2026227 PMAQI
3rd Aug 2026228 PMAQI
3rd Aug 2026259 PMAQI
3rd Aug 20261710 PMAQI
3rd Aug 20261811 PMAQI
4th Aug 20261812 AMAQI
4th Aug 2026181 AMAQI
4th Aug 2026232 AMAQI
4th Aug 2026323 AMAQI
4th Aug 2026254 AMAQI
4th Aug 2026215 AMAQI

27°C23/33°C

4th Aug 2026256 AMAQI
4th Aug 2026257 AMAQI
4th Aug 2026278 AMAQI
4th Aug 2026259 AMAQI
4th Aug 20263810 AMAQI
4th Aug 20262711 AMAQI
4th Aug 20261812 PMAQI
4th Aug 2026101 PMAQI
4th Aug 2026232 PMAQI
4th Aug 2026173 PMAQI
4th Aug 2026134 PMAQI
4th Aug 2026175 PMAQI
4th Aug 2026176 PMAQI
4th Aug 2026167 PMAQI
4th Aug 2026188 PMAQI
4th Aug 2026239 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20263611 PMAQI
5th Aug 20264212 AMAQI
5th Aug 2026331 AMAQI
5th Aug 2026342 AMAQI
5th Aug 2026253 AMAQI
5th Aug 2026214 AMAQI
5th Aug 2026235 AMAQI

25°C18/33°C

5th Aug 2026136 AMAQI
5th Aug 2026427 AMAQI
5th Aug 2026298 AMAQI
5th Aug 2026279 AMAQI
5th Aug 20262210 AMAQI
5th Aug 20263111 AMAQI
5th Aug 2026912 PMAQI
5th Aug 2026461 PMAQI
5th Aug 2026202 PMAQI
5th Aug 2026183 PMAQI
5th Aug 2026254 PMAQI
5th Aug 2026265 PMAQI
5th Aug 2026316 PMAQI
5th Aug 2026267 PMAQI
5th Aug 2026248 PMAQI
5th Aug 2026269 PMAQI
5th Aug 20262410 PMAQI
5th Aug 20262211 PMAQI
6th Aug 20261612 AMAQI
6th Aug 2026381 AMAQI
6th Aug 2026462 AMAQI
6th Aug 2026333 AMAQI
6th Aug 2026504 AMAQI
6th Aug 2026405 AMAQI

26°C23/30°C

6th Aug 2026276 AMAQI
6th Aug 2026387 AMAQI
6th Aug 2026428 AMAQI
6th Aug 2026389 AMAQI
6th Aug 20262910 AMAQI
6th Aug 20264211 AMAQI
6th Aug 20263112 PMAQI
6th Aug 2026401 PMAQI
6th Aug 2026272 PMAQI
6th Aug 2026363 PMAQI
6th Aug 2026464 PMAQI
6th Aug 2026335 PMAQI
6th Aug 2026236 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026348 PMAQI
6th Aug 2026429 PMAQI
6th Aug 20264410 PMAQI
6th Aug 20265011 PMAQI
7th Aug 20263612 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026252 AMAQI
7th Aug 2026253 AMAQI
7th Aug 2026334 AMAQI
7th Aug 2026295 AMAQI

27°C22/36°C

7th Aug 2026296 AMAQI
7th Aug 2026337 AMAQI
7th Aug 2026338 AMAQI
7th Aug 2026339 AMAQI
7th Aug 20263310 AMAQI
7th Aug 20263811 AMAQI
7th Aug 20263312 PMAQI
7th Aug 2026381 PMAQI
7th Aug 2026382 PMAQI
7th Aug 2026423 PMAQI
7th Aug 2026384 PMAQI
7th Aug 2026335 PMAQI
7th Aug 2026336 PMAQI
7th Aug 2026337 PMAQI
7th Aug 2026388 PMAQI
7th Aug 2026389 PMAQI
7th Aug 20263310 PMAQI
7th Aug 20262111 PMAQI
8th Aug 20262112 AMAQI
8th Aug 2026161 AMAQI
8th Aug 2026212 AMAQI
8th Aug 2026253 AMAQI
8th Aug 2026274 AMAQI
8th Aug 2026295 AMAQI

27°C22/35°C

8th Aug 2026256 AMAQI
8th Aug 2026257 AMAQI
8th Aug 2026258 AMAQI
8th Aug 2026299 AMAQI
8th Aug 20262110 AMAQI
8th Aug 20262911 AMAQI
8th Aug 20262512 PMAQI
8th Aug 2026291 PMAQI
8th Aug 2026292 PMAQI
8th Aug 2026383 PMAQI
8th Aug 2026294 PMAQI
8th Aug 2026335 PMAQI
8th Aug 2026296 PMAQI
8th Aug 2026257 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026259 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262511 PMAQI
9th Aug 20263412 AMAQI
9th Aug 2026421 AMAQI
9th Aug 2026382 AMAQI
9th Aug 2026303 AMAQI
9th Aug 2026444 AMAQI
9th Aug 2026345 AMAQI

26°C21/32°C

9th Aug 2026346 AMAQI
9th Aug 2026237 AMAQI
9th Aug 2026218 AMAQI
9th Aug 2026239 AMAQI
9th Aug 20263410 AMAQI
9th Aug 20263611 AMAQI
9th Aug 20264212 PMAQI
9th Aug 2026251 PMAQI
9th Aug 2026252 PMAQI
9th Aug 2026253 PMAQI
9th Aug 2026404 PMAQI
9th Aug 2026295 PMAQI
9th Aug 2026296 PMAQI
9th Aug 2026297 PMAQI
9th Aug 2026428 PMAQI
9th Aug 2026449 PMAQI
9th Aug 20265010 PMAQI
9th Aug 20264411 PMAQI
10th Aug 20264212 AMAQI
10th Aug 2026481 AMAQI
10th Aug 2026482 AMAQI
10th Aug 2026463 AMAQI
10th Aug 2026464 AMAQI
10th Aug 2026465 AMAQI

28°C22/36°C

10th Aug 2026446 AMAQI
10th Aug 2026387 AMAQI
10th Aug 2026488 AMAQI
10th Aug 2026469 AMAQI
10th Aug 20264810 AMAQI
10th Aug 20265111 AMAQI
10th Aug 20265412 PMAQI
10th Aug 2026541 PMAQI
10th Aug 2026572 PMAQI
10th Aug 2026483 PMAQI
10th Aug 2026384 PMAQI
10th Aug 2026315 PMAQI
10th Aug 2026296 PMAQI
10th Aug 2026317 PMAQI
10th Aug 2026258 PMAQI
10th Aug 2026259 PMAQI
10th Aug 20262710 PMAQI
10th Aug 20262511 PMAQI
11th Aug 20262512 AMAQI
11th Aug 2026261 AMAQI
11th Aug 2026252 AMAQI
11th Aug 2026273 AMAQI
11th Aug 2026324 AMAQI
11th Aug 2026255 AMAQI

25°C20/36°C

11th Aug 2026276 AMAQI
11th Aug 2026467 AMAQI
11th Aug 2026518 AMAQI
11th Aug 2026579 AMAQI
11th Aug 20265210 AMAQI
11th Aug 20265011 AMAQI
11th Aug 20264412 PMAQI
11th Aug 2026461 PMAQI
11th Aug 2026422 PMAQI
11th Aug 2026463 PMAQI
11th Aug 2026404 PMAQI
11th Aug 2026335 PMAQI
11th Aug 2026336 PMAQI
11th Aug 2026407 PMAQI
11th Aug 2026338 PMAQI
11th Aug 2026339 PMAQI
11th Aug 20263310 PMAQI
11th Aug 20263311 PMAQI
12th Aug 20263312 AMAQI
12th Aug 2026401 AMAQI
12th Aug 2026422 AMAQI
12th Aug 2026383 AMAQI
12th Aug 2026314 AMAQI
12th Aug 2026315 AMAQI

25°C20/33°C

12th Aug 2026316 AMAQI
12th Aug 2026297 AMAQI
12th Aug 2026258 AMAQI
12th Aug 2026259 AMAQI
12th Aug 20262710 AMAQI
12th Aug 20264011 AMAQI
12th Aug 20264212 PMAQI
12th Aug 2026401 PMAQI
12th Aug 2026402 PMAQI
12th Aug 2026383 PMAQI
12th Aug 2026404 PMAQI
12th Aug 2026445 PMAQI
12th Aug 2026486 PMAQI
12th Aug 2026427 PMAQI
12th Aug 2026408 PMAQI
12th Aug 2026449 PMAQI
12th Aug 20264010 PMAQI
12th Aug 20263311 PMAQI
13th Aug 20262912 AMAQI
13th Aug 2026381 AMAQI
13th Aug 2026402 AMAQI
13th Aug 2026463 AMAQI
13th Aug 2026424 AMAQI
13th Aug 2026315 AMAQI

26°C21/33°C

13th Aug 2026276 AMAQI
13th Aug 2026277 AMAQI
13th Aug 2026318 AMAQI
13th Aug 2026299 AMAQI
13th Aug 20262910 AMAQI
13th Aug 20262511 AMAQI
13th Aug 20262912 PMAQI
13th Aug 2026251 PMAQI
13th Aug 2026252 PMAQI
13th Aug 2026253 PMAQI
13th Aug 2026254 PMAQI
13th Aug 2026215 PMAQI
13th Aug 2026256 PMAQI
13th Aug 2026217 PMAQI
13th Aug 2026218 PMAQI
13th Aug 2026219 PMAQI
13th Aug 20262310 PMAQI
13th Aug 20262511 PMAQI
14th Aug 20263412 AMAQI
14th Aug 2026441 AMAQI
14th Aug 2026382 AMAQI
14th Aug 2026463 AMAQI
14th Aug 2026424 AMAQI
14th Aug 2026385 AMAQI

27°C21/35°C

14th Aug 2026406 AMAQI
14th Aug 2026467 AMAQI
14th Aug 2026468 AMAQI
14th Aug 2026529 AMAQI
14th Aug 20265710 AMAQI
14th Aug 20265211 AMAQI
14th Aug 20265012 PMAQI
14th Aug 2026511 PMAQI
14th Aug 2026512 PMAQI
14th Aug 2026513 PMAQI
14th Aug 2026484 PMAQI
14th Aug 2026445 PMAQI
14th Aug 2026466 PMAQI
14th Aug 2026447 PMAQI
14th Aug 2026448 PMAQI
14th Aug 2026489 PMAQI
14th Aug 20264610 PMAQI
14th Aug 20264211 PMAQI
15th Aug 20264912 AMAQI
15th Aug 2026441 AMAQI
15th Aug 2026402 AMAQI
15th Aug 2026463 AMAQI
15th Aug 2026444 AMAQI
15th Aug 2026335 AMAQI

26°C21/30°C

15th Aug 2026446 AMAQI
15th Aug 2026507 AMAQI
15th Aug 2026518 AMAQI
15th Aug 2026409 AMAQI
15th Aug 20264810 AMAQI
15th Aug 20264611 AMAQI
15th Aug 20264212 PMAQI
15th Aug 2026331 PMAQI
15th Aug 2026312 PMAQI
15th Aug 2026293 PMAQI
15th Aug 2026294 PMAQI
15th Aug 2026335 PMAQI
15th Aug 2026316 PMAQI
15th Aug 2026317 PMAQI
15th Aug 2026298 PMAQI
15th Aug 2026469 PMAQI
15th Aug 20263110 PMAQI
15th Aug 20263311 PMAQI
16th Aug 20264012 AMAQI
16th Aug 2026401 AMAQI
16th Aug 2026402 AMAQI
16th Aug 2026383 AMAQI
16th Aug 2026424 AMAQI
16th Aug 2026485 AMAQI

24°C19/33°C

16th Aug 2026466 AMAQI
16th Aug 2026507 AMAQI
16th Aug 2026548 AMAQI
16th Aug 2026529 AMAQI
16th Aug 20264910 AMAQI
16th Aug 20264811 AMAQI
16th Aug 20265112 PMAQI
16th Aug 2026421 PMAQI
16th Aug 2026402 PMAQI
16th Aug 2026333 PMAQI
16th Aug 2026294 PMAQI
16th Aug 2026295 PMAQI
16th Aug 2026386 PMAQI
16th Aug 2026317 PMAQI
16th Aug 2026298 PMAQI
16th Aug 2026339 PMAQI
16th Aug 20262910 PMAQI
16th Aug 20262711 PMAQI
17th Aug 20262312 AMAQI
17th Aug 2026211 AMAQI
17th Aug 2026232 AMAQI
17th Aug 2026213 AMAQI
17th Aug 2026254 AMAQI
17th Aug 2026255 AMAQI

23°C20/26°C

17th Aug 2026246 AMAQI
6 AM
17th Aug 2026237 AMAQI
17th Aug 2026388 AMAQI
17th Aug 2026219 AMAQI
17th Aug 20264410 AMAQI
17th Aug 20265011 AMAQI
17th Aug 20265012 PMAQI
17th Aug 2026421 PMAQI
1 PM
17th Aug 2026422 PMAQI
17th Aug 2026403 PMAQI
17th Aug 2026364 PMAQI
17th Aug 2026385 PMAQI
17th Aug 2026336 PMAQI
17th Aug 2026387 PMAQI
17th Aug 2026428 PMAQI
8 PM
1 AM
5 AM

26°C22/33°C

Day time
Avg. Highest Time
11 AM

41AQI

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

32AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 11 AM (Avg. 41), while the lowest AQI was between 7 PM to 8 PM (Avg. 32).
Night time
Avg. Highest Time
12 AM - 11 PM

35AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
11 PM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 35), while the lowest AQI was between 11 PM to 11 PM (Avg. 33).

2026 Days Vs Air Quality

Hagerstown, Halfway, Maryland, United States

2026

94%

211

5%

12

0.4%

1

0.4%

1

Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)

Good
211 Days
Moderate
12 Days
Poor
1 Days
Unhealthy
1 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 94%

Health Risk Level:

Very Low

In 2026, 94% of 229 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

Hagerstown, Halfway, Maryland, 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
13AQI (US)
2nd January 2026
18AQI (US)
3rd January 2026
41AQI (US)
4th January 2026
51AQI (US)
5th January 2026
50AQI (US)
6th January 2026
65AQI (US)
7th January 2026
48AQI (US)
8th January 2026
24AQI (US)
9th January 2026
36AQI (US)
10th January 2026
35AQI (US)
11th January 2026
17AQI (US)
12th January 2026
15AQI (US)
13th January 2026
20AQI (US)
14th January 2026
20AQI (US)
15th January 2026
18AQI (US)
16th January 2026
15AQI (US)
17th January 2026
21AQI (US)
18th January 2026
35AQI (US)
19th January 2026
22AQI (US)
20th January 2026
15AQI (US)
21st January 2026
27AQI (US)
22nd January 2026
42AQI (US)
23rd January 2026
40AQI (US)
24th January 2026
46AQI (US)
25th January 2026
37AQI (US)
26th January 2026
41AQI (US)
27th January 2026
28AQI (US)
28th January 2026
25AQI (US)
29th January 2026
42AQI (US)
30th January 2026
51AQI (US)
31st January 2026
39AQI (US)
1st February 2026
38AQI (US)
2nd February 2026
41AQI (US)
3rd February 2026
41AQI (US)
4th February 2026
32AQI (US)
5th February 2026
42AQI (US)
6th February 2026
44AQI (US)
7th February 2026
30AQI (US)
8th February 2026
42AQI (US)
9th February 2026
41AQI (US)
10th February 2026
40AQI (US)
11th February 2026
31AQI (US)
12th February 2026
25AQI (US)
13th February 2026
28AQI (US)
14th February 2026
29AQI (US)
15th February 2026
33AQI (US)
16th February 2026
36AQI (US)
17th February 2026
36AQI (US)
18th February 2026
42AQI (US)
19th February 2026
45AQI (US)
20th February 2026
35AQI (US)
21st February 2026
35AQI (US)
22nd February 2026
26AQI (US)
23rd February 2026
38AQI (US)
24th February 2026
44AQI (US)
25th February 2026
40AQI (US)
26th February 2026
23AQI (US)
27th February 2026
25AQI (US)
28th February 2026
24AQI (US)
1st March 2026
28AQI (US)
2nd March 2026
49AQI (US)
3rd March 2026
34AQI (US)
4th March 2026
37AQI (US)
5th March 2026
29AQI (US)
6th March 2026
21AQI (US)
7th March 2026
29AQI (US)
8th March 2026
29AQI (US)
9th March 2026
31AQI (US)
10th March 2026
27AQI (US)
11th March 2026
34AQI (US)
12th March 2026
34AQI (US)
13th March 2026
33AQI (US)
14th March 2026
33AQI (US)
15th March 2026
22AQI (US)
16th March 2026
31AQI (US)
17th March 2026
34AQI (US)
18th March 2026
29AQI (US)
19th March 2026
29AQI (US)
20th March 2026
35AQI (US)
21st March 2026
29AQI (US)
22nd March 2026
26AQI (US)
23rd March 2026
35AQI (US)
24th March 2026
32AQI (US)
25th March 2026
24AQI (US)
26th March 2026
28AQI (US)
27th March 2026
29AQI (US)
28th March 2026
28AQI (US)
29th March 2026
18AQI (US)
30th March 2026
21AQI (US)
31st March 2026
21AQI (US)
1st April 2026
24AQI (US)
2nd April 2026
17AQI (US)
3rd April 2026
22AQI (US)
4th April 2026
29AQI (US)
5th April 2026
26AQI (US)
6th April 2026
29AQI (US)
7th April 2026
29AQI (US)
8th April 2026
31AQI (US)
9th April 2026
19AQI (US)
10th April 2026
25AQI (US)
11th April 2026
25AQI (US)
12th April 2026
20AQI (US)
13th April 2026
22AQI (US)
14th April 2026
28AQI (US)
15th April 2026
63AQI (US)
16th April 2026
74AQI (US)
17th April 2026
18th April 2026
25AQI (US)
19th April 2026
30AQI (US)
20th April 2026
27AQI (US)
21st April 2026
19AQI (US)
22nd April 2026
23rd April 2026
18AQI (US)
24th April 2026
17AQI (US)
25th April 2026
17AQI (US)
26th April 2026
30AQI (US)
27th April 2026
23AQI (US)
28th April 2026
24AQI (US)
29th April 2026
20AQI (US)
30th April 2026
26AQI (US)
1st May 2026
22AQI (US)
2nd May 2026
22AQI (US)
3rd May 2026
20AQI (US)
4th May 2026
33AQI (US)
5th May 2026
34AQI (US)
6th May 2026
24AQI (US)
7th May 2026
24AQI (US)
8th May 2026
27AQI (US)
9th May 2026
10th May 2026
22AQI (US)
11th May 2026
22AQI (US)
12th May 2026
24AQI (US)
13th May 2026
22AQI (US)
14th May 2026
20AQI (US)
15th May 2026
42AQI (US)
16th May 2026
41AQI (US)
17th May 2026
41AQI (US)
18th May 2026
54AQI (US)
19th May 2026
51AQI (US)
20th May 2026
48AQI (US)
21st May 2026
42AQI (US)
22nd May 2026
40AQI (US)
23rd May 2026
51AQI (US)
24th May 2026
46AQI (US)
25th May 2026
43AQI (US)
26th May 2026
23AQI (US)
27th May 2026
13AQI (US)
28th May 2026
13AQI (US)
29th May 2026
14AQI (US)
30th May 2026
16AQI (US)
31st May 2026
24AQI (US)
1st June 2026
17AQI (US)
2nd June 2026
14AQI (US)
3rd June 2026
14AQI (US)
4th June 2026
17AQI (US)
5th June 2026
19AQI (US)
6th June 2026
20AQI (US)
7th June 2026
13AQI (US)
8th June 2026
13AQI (US)
9th June 2026
18AQI (US)
10th June 2026
15AQI (US)
11th June 2026
18AQI (US)
12th June 2026
14AQI (US)
13th June 2026
14AQI (US)
14th June 2026
14AQI (US)
15th June 2026
20AQI (US)
16th June 2026
22AQI (US)
17th June 2026
16AQI (US)
18th June 2026
20AQI (US)
19th June 2026
15AQI (US)
20th June 2026
20AQI (US)
21st June 2026
14AQI (US)
22nd June 2026
20AQI (US)
23rd June 2026
14AQI (US)
24th June 2026
19AQI (US)
25th June 2026
17AQI (US)
26th June 2026
13AQI (US)
27th June 2026
17AQI (US)
28th June 2026
17AQI (US)
29th June 2026
17AQI (US)
30th June 2026
19AQI (US)
1st July 2026
33AQI (US)
2nd July 2026
63AQI (US)
3rd July 2026
50AQI (US)
4th July 2026
29AQI (US)
5th July 2026
28AQI (US)
6th July 2026
15AQI (US)
7th July 2026
16AQI (US)
8th July 2026
16AQI (US)
9th July 2026
20AQI (US)
10th July 2026
17AQI (US)
11th July 2026
12AQI (US)
12th July 2026
16AQI (US)
13th July 2026
19AQI (US)
14th July 2026
15AQI (US)
15th July 2026
19AQI (US)
16th July 2026
22AQI (US)
17th July 2026
182AQI (US)
18th July 2026
136AQI (US)
19th July 2026
63AQI (US)
20th July 2026
58AQI (US)
21st July 2026
54AQI (US)
22nd July 2026
19AQI (US)
23rd July 2026
25AQI (US)
24th July 2026
31AQI (US)
25th July 2026
28AQI (US)
26th July 2026
31AQI (US)
27th July 2026
41AQI (US)
28th July 2026
47AQI (US)
29th July 2026
34AQI (US)
30th July 2026
20AQI (US)
31st July 2026
32AQI (US)
1st August 2026
32AQI (US)
2nd August 2026
35AQI (US)
3rd August 2026
29AQI (US)
4th August 2026
22AQI (US)
5th August 2026
27AQI (US)
6th August 2026
36AQI (US)
7th August 2026
33AQI (US)
8th August 2026
26AQI (US)
9th August 2026
34AQI (US)
10th August 2026
41AQI (US)
11th August 2026
37AQI (US)
12th August 2026
37AQI (US)
13th August 2026
28AQI (US)
14th August 2026
46AQI (US)
15th August 2026
39AQI (US)
16th August 2026
40AQI (US)
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

32AQI (US)

35AQI (US)

30AQI (US)

27AQI (US)

31AQI (US)

17AQI (US)

38AQI (US)

34AQI (US)

No. of days

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

202630AQI (US)

28
3
28
31
26
2
27
3
30
25
4
1
1
16
211
12
1
1

Highest AQI (US) recorded in

July

38AQI (US)

Lowest AQI (US) recorded in

June

17AQI (US)

202532AQI (US)

29
2
27
1
29
2
29
1
31
20
10
26
5
27
4
30
31
27
3
30
1
336
29

Highest AQI (US) recorded in

June

41AQI (US)

Lowest AQI (US) recorded in

May

24AQI (US)

202430AQI (US)

26
4
27
2
31
30
31
29
1
31
31
30
31
30
28
3
355
10

Highest AQI (US) recorded in

June

33AQI (US)

Lowest AQI (US) recorded in

November

23AQI (US)

202333AQI (US)

29
2
27
1
31
29
1
28
3
14
11
4
1
28
3
30
1
30
31
26
2
27
4
330
28
4
1

Highest AQI (US) recorded in

June

56AQI (US)

Lowest AQI (US) recorded in

October

25AQI (US)

202231AQI (US)

24
5
21
31
16
1
31
29
22
2
29
31
26
1
27
2
289
9

Highest AQI (US) recorded in

June

38AQI (US)

Lowest AQI (US) recorded in

November

24AQI (US)

202136AQI (US)

22
7
15
13
27
4
30
30
1
29
1
21
10
31
28
2
30
29
1
27
2
319
41

Highest AQI (US) recorded in

February

47AQI (US)

Lowest AQI (US) recorded in

October

30AQI (US)

202032AQI (US)

13
19
2
16
28
30
1
30
1
30
31
28
2
23
8
248
14

Highest AQI (US) recorded in

December

38AQI (US)

Lowest AQI (US) recorded in

October

25AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2021(Avg.)
36AQI (US)
Least Polluted Year Recorded
2024(Avg.)
30AQI (US)

Hagerstown's annual 2026 AQI (US) (30) shows an average percentage change of -6.9% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (36), 2022 (31), 2023 (33), 2024 (30), 2025 (32).