Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Haarlem, Noord Holland, Netherlands 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

Haarlem, Noord Holland, Netherlands

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
14th Aug 2025
57AQI
Lowest AQI recorded on
6th Aug 2023
15AQI

Same Day Analysis (5th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 22 of Good air quality, showing improvement over 2025 and 2024 on the same day.

Day & Night AQI Trend: 5th Aug - 6th Aug 2026

Haarlem, Noord Holland, Netherlands

AQI
Day
Night
.

5 AM5th Aug 2026

9 PM

4 AM6th Aug 2026

Day time
Avg. Highest Time
2PM5th Aug

36AQI

Avg. Lowest Time
10AM5th Aug

14AQI

Night time
Avg. Highest Time
2AM6th Aug

27AQI

Avg. Lowest Time
11PM5th Aug

21AQI

In the last 24 hours,

Haarlem's AQI reached its highest point of 36 at 2 PM during the Day, while the lowest point, 14, was recorded at 10 AM during the Day between 5th Aug and 6th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Haarlem, Noord Holland, Netherlands

JulAug
08th - 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 - 06th06th
Day
Night
8th Jul 202675 AMAQI
8th Jul 202676 AMAQI
8th Jul 202687 AMAQI
8th Jul 2026108 AMAQI
8th Jul 2026129 AMAQI
8th Jul 20261210 AMAQI
8th Jul 20261111 AMAQI
8th Jul 20261312 PMAQI
8th Jul 2026131 PMAQI
8th Jul 2026132 PMAQI
8th Jul 2026113 PMAQI
8th Jul 2026114 PMAQI
8th Jul 2026115 PMAQI
8th Jul 2026126 PMAQI
8th Jul 2026127 PMAQI
8th Jul 2026108 PMAQI
8th Jul 2026109 PMAQI
8th Jul 20261010 PMAQI
8th Jul 20261011 PMAQI
9th Jul 20261612 AMAQI
9th Jul 2026151 AMAQI
9th Jul 2026142 AMAQI
9th Jul 2026153 AMAQI
9th Jul 2026134 AMAQI

18°C17/19°C

9th Jul 2026125 AMAQI
9th Jul 2026126 AMAQI
9th Jul 2026117 AMAQI
9th Jul 2026118 AMAQI
9th Jul 2026159 AMAQI
9th Jul 20261610 AMAQI
9th Jul 20261411 AMAQI
9th Jul 20261212 PMAQI
9th Jul 2026121 PMAQI
9th Jul 2026122 PMAQI
9th Jul 2026113 PMAQI
9th Jul 2026134 PMAQI
9th Jul 2026165 PMAQI
9th Jul 2026186 PMAQI
9th Jul 2026227 PMAQI
9th Jul 2026198 PMAQI
9th Jul 2026209 PMAQI
9th Jul 20262210 PMAQI
9th Jul 20262311 PMAQI
10th Jul 20262312 AMAQI
10th Jul 2026221 AMAQI
10th Jul 2026242 AMAQI
10th Jul 2026253 AMAQI
10th Jul 2026234 AMAQI

19°C17/22°C

10th Jul 2026235 AMAQI
10th Jul 2026216 AMAQI
10th Jul 2026217 AMAQI
10th Jul 2026208 AMAQI
10th Jul 2026209 AMAQI
10th Jul 20262410 AMAQI
10th Jul 20262411 AMAQI
10th Jul 20262212 PMAQI
10th Jul 2026211 PMAQI
10th Jul 2026182 PMAQI
10th Jul 2026183 PMAQI
10th Jul 2026224 PMAQI
10th Jul 2026235 PMAQI
10th Jul 2026226 PMAQI
10th Jul 2026257 PMAQI
10th Jul 2026168 PMAQI
10th Jul 2026249 PMAQI
10th Jul 20262610 PMAQI
10th Jul 20262411 PMAQI
11th Jul 20262012 AMAQI
11th Jul 2026201 AMAQI
11th Jul 2026232 AMAQI
11th Jul 2026243 AMAQI
11th Jul 2026224 AMAQI

20°C16/24°C

11th Jul 2026235 AMAQI
11th Jul 2026246 AMAQI
11th Jul 2026237 AMAQI
11th Jul 2026218 AMAQI
11th Jul 2026279 AMAQI
11th Jul 20262910 AMAQI
11th Jul 20262911 AMAQI
11th Jul 20262612 PMAQI
11th Jul 2026251 PMAQI
11th Jul 2026232 PMAQI
11th Jul 2026273 PMAQI
11th Jul 2026264 PMAQI
11th Jul 2026275 PMAQI
11th Jul 2026276 PMAQI
11th Jul 2026267 PMAQI
11th Jul 2026288 PMAQI
11th Jul 2026249 PMAQI
11th Jul 20262710 PMAQI
11th Jul 20262611 PMAQI
12th Jul 20262612 AMAQI
12th Jul 2026261 AMAQI
12th Jul 2026272 AMAQI
12th Jul 2026293 AMAQI
12th Jul 2026264 AMAQI

20°C17/24°C

12th Jul 2026265 AMAQI
12th Jul 2026226 AMAQI
12th Jul 2026247 AMAQI
12th Jul 2026238 AMAQI
12th Jul 2026249 AMAQI
12th Jul 20262610 AMAQI
12th Jul 20262611 AMAQI
12th Jul 20262812 PMAQI
12th Jul 2026261 PMAQI
12th Jul 2026292 PMAQI
12th Jul 2026293 PMAQI
12th Jul 2026274 PMAQI
12th Jul 2026285 PMAQI
12th Jul 2026266 PMAQI
12th Jul 2026257 PMAQI
12th Jul 2026278 PMAQI
12th Jul 2026279 PMAQI
12th Jul 20262710 PMAQI
12th Jul 20262411 PMAQI
13th Jul 20262512 AMAQI
13th Jul 2026251 AMAQI
13th Jul 2026252 AMAQI
13th Jul 2026263 AMAQI
13th Jul 2026234 AMAQI

20°C16/23°C

13th Jul 2026225 AMAQI
13th Jul 2026226 AMAQI
13th Jul 2026207 AMAQI
13th Jul 2026218 AMAQI
13th Jul 2026249 AMAQI
13th Jul 20262610 AMAQI
13th Jul 20262711 AMAQI
13th Jul 20262912 PMAQI
13th Jul 2026271 PMAQI
13th Jul 2026282 PMAQI
13th Jul 2026283 PMAQI
13th Jul 2026304 PMAQI
13th Jul 2026315 PMAQI
13th Jul 2026316 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026278 PMAQI
13th Jul 2026239 PMAQI
13th Jul 20262410 PMAQI
13th Jul 20262411 PMAQI
14th Jul 20262212 AMAQI
14th Jul 2026211 AMAQI
14th Jul 2026252 AMAQI
14th Jul 2026253 AMAQI
14th Jul 2026264 AMAQI

19°C16/23°C

14th Jul 2026255 AMAQI
14th Jul 2026226 AMAQI
14th Jul 2026237 AMAQI
14th Jul 2026198 AMAQI
14th Jul 2026219 AMAQI
14th Jul 20262110 AMAQI
14th Jul 20262011 AMAQI
14th Jul 20262212 PMAQI
14th Jul 2026231 PMAQI
14th Jul 2026232 PMAQI
14th Jul 2026193 PMAQI
14th Jul 2026244 PMAQI
14th Jul 2026235 PMAQI
14th Jul 2026246 PMAQI
14th Jul 2026237 PMAQI
14th Jul 2026248 PMAQI
14th Jul 2026229 PMAQI
14th Jul 20262210 PMAQI
14th Jul 20262011 PMAQI
15th Jul 20261912 AMAQI
15th Jul 2026161 AMAQI
15th Jul 2026232 AMAQI
15th Jul 2026243 AMAQI
15th Jul 2026214 AMAQI

22°C18/26°C

15th Jul 2026215 AMAQI
15th Jul 2026216 AMAQI
15th Jul 2026207 AMAQI
15th Jul 2026208 AMAQI
15th Jul 2026209 AMAQI
15th Jul 20261810 AMAQI
15th Jul 20261911 AMAQI
15th Jul 20261812 PMAQI
15th Jul 2026201 PMAQI
15th Jul 2026202 PMAQI
15th Jul 2026223 PMAQI
15th Jul 2026234 PMAQI
15th Jul 2026255 PMAQI
15th Jul 2026266 PMAQI
15th Jul 2026267 PMAQI
15th Jul 2026248 PMAQI
15th Jul 2026249 PMAQI
15th Jul 20262310 PMAQI
15th Jul 20262111 PMAQI
16th Jul 20262012 AMAQI
16th Jul 2026191 AMAQI
16th Jul 2026182 AMAQI
16th Jul 2026173 AMAQI
16th Jul 2026154 AMAQI

22°C17/26°C

16th Jul 2026165 AMAQI
16th Jul 2026156 AMAQI
16th Jul 2026167 AMAQI
16th Jul 2026168 AMAQI
16th Jul 2026189 AMAQI
16th Jul 20262010 AMAQI
16th Jul 20262211 AMAQI
16th Jul 20262112 PMAQI
16th Jul 2026191 PMAQI
16th Jul 2026202 PMAQI
16th Jul 2026203 PMAQI
16th Jul 2026234 PMAQI
16th Jul 2026255 PMAQI
16th Jul 2026246 PMAQI
16th Jul 2026327 PMAQI
16th Jul 2026248 PMAQI
16th Jul 2026189 PMAQI
16th Jul 20261610 PMAQI
16th Jul 20262211 PMAQI
17th Jul 20262912 AMAQI
17th Jul 2026261 AMAQI
17th Jul 2026352 AMAQI
17th Jul 2026333 AMAQI
17th Jul 2026344 AMAQI

20°C18/23°C

17th Jul 2026365 AMAQI
17th Jul 2026316 AMAQI
17th Jul 2026337 AMAQI
17th Jul 2026348 AMAQI
17th Jul 2026489 AMAQI
17th Jul 20264810 AMAQI
17th Jul 20264711 AMAQI
17th Jul 20264412 PMAQI
17th Jul 2026401 PMAQI
17th Jul 2026392 PMAQI
17th Jul 2026383 PMAQI
17th Jul 2026374 PMAQI
17th Jul 2026385 PMAQI
17th Jul 2026386 PMAQI
17th Jul 2026377 PMAQI
17th Jul 2026368 PMAQI
17th Jul 2026389 PMAQI
17th Jul 20263710 PMAQI
17th Jul 20263811 PMAQI
18th Jul 20263812 AMAQI
18th Jul 2026351 AMAQI
18th Jul 2026392 AMAQI
18th Jul 2026413 AMAQI
18th Jul 2026404 AMAQI

18°C17/20°C

18th Jul 2026435 AMAQI
18th Jul 2026466 AMAQI
18th Jul 2026497 AMAQI
18th Jul 2026528 AMAQI
18th Jul 2026559 AMAQI
18th Jul 20265410 AMAQI
18th Jul 20264711 AMAQI
18th Jul 20264212 PMAQI
18th Jul 2026371 PMAQI
18th Jul 2026352 PMAQI
18th Jul 2026473 PMAQI
18th Jul 2026574 PMAQI
18th Jul 2026565 PMAQI
18th Jul 2026406 PMAQI
18th Jul 2026267 PMAQI
18th Jul 2026328 PMAQI
18th Jul 2026259 PMAQI
18th Jul 20263310 PMAQI
18th Jul 20263311 PMAQI
19th Jul 20262512 AMAQI
19th Jul 2026281 AMAQI
19th Jul 2026282 AMAQI
19th Jul 2026323 AMAQI
19th Jul 2026364 AMAQI

17°C16/18°C

19th Jul 2026335 AMAQI
19th Jul 2026376 AMAQI
19th Jul 2026387 AMAQI
19th Jul 2026358 AMAQI
19th Jul 2026289 AMAQI
19th Jul 20262410 AMAQI
19th Jul 20262511 AMAQI
19th Jul 20263012 PMAQI
19th Jul 2026291 PMAQI
19th Jul 2026282 PMAQI
19th Jul 2026343 PMAQI
19th Jul 2026304 PMAQI
19th Jul 2026325 PMAQI
19th Jul 2026366 PMAQI
19th Jul 2026367 PMAQI
19th Jul 2026308 PMAQI
19th Jul 2026279 PMAQI
19th Jul 20262710 PMAQI
19th Jul 20262711 PMAQI
20th Jul 20262312 AMAQI
20th Jul 2026241 AMAQI
20th Jul 2026262 AMAQI
20th Jul 2026233 AMAQI
20th Jul 2026224 AMAQI

16°C15/18°C

20th Jul 2026295 AMAQI
20th Jul 2026266 AMAQI
20th Jul 2026277 AMAQI
20th Jul 2026278 AMAQI
20th Jul 2026279 AMAQI
20th Jul 20262210 AMAQI
20th Jul 20262611 AMAQI
20th Jul 20263112 PMAQI
20th Jul 2026311 PMAQI
20th Jul 2026272 PMAQI
20th Jul 2026263 PMAQI
20th Jul 2026254 PMAQI
20th Jul 2026295 PMAQI
20th Jul 2026256 PMAQI
20th Jul 2026257 PMAQI
20th Jul 2026238 PMAQI
20th Jul 2026259 PMAQI
20th Jul 20263310 PMAQI
20th Jul 20262711 PMAQI
21st Jul 20262512 AMAQI
21st Jul 2026251 AMAQI
21st Jul 2026192 AMAQI
21st Jul 2026253 AMAQI
21st Jul 2026264 AMAQI

17°C15/18°C

21st Jul 2026316 AMAQI
21st Jul 2026357 AMAQI
21st Jul 2026388 AMAQI
21st Jul 2026399 AMAQI
21st Jul 20263610 AMAQI
21st Jul 20263211 AMAQI
21st Jul 20263812 PMAQI
21st Jul 2026251 PMAQI
21st Jul 2026352 PMAQI
21st Jul 2026313 PMAQI
21st Jul 2026404 PMAQI
21st Jul 2026205 PMAQI
21st Jul 2026376 PMAQI
21st Jul 2026307 PMAQI
21st Jul 2026298 PMAQI
21st Jul 2026269 PMAQI
21st Jul 20261610 PMAQI
21st Jul 20261211 PMAQI
22nd Jul 20261212 AMAQI
22nd Jul 2026111 AMAQI
22nd Jul 2026182 AMAQI
22nd Jul 2026183 AMAQI
22nd Jul 2026254 AMAQI

17°C15/18°C

22nd Jul 2026225 AMAQI
22nd Jul 2026236 AMAQI
22nd Jul 2026137 AMAQI
22nd Jul 2026198 AMAQI
22nd Jul 2026229 AMAQI
22nd Jul 20262710 AMAQI
22nd Jul 20263411 AMAQI
22nd Jul 20262812 PMAQI
22nd Jul 2026261 PMAQI
22nd Jul 2026252 PMAQI
22nd Jul 2026323 PMAQI
22nd Jul 2026314 PMAQI
22nd Jul 2026295 PMAQI
22nd Jul 2026276 PMAQI
22nd Jul 2026267 PMAQI
22nd Jul 2026288 PMAQI
22nd Jul 2026509 PMAQI
22nd Jul 20263710 PMAQI
22nd Jul 20263711 PMAQI
23rd Jul 20263612 AMAQI
23rd Jul 2026281 AMAQI
23rd Jul 2026242 AMAQI
23rd Jul 2026253 AMAQI
23rd Jul 2026194 AMAQI

17°C16/18°C

23rd Jul 2026125 AMAQI
23rd Jul 2026126 AMAQI
23rd Jul 2026127 AMAQI
23rd Jul 2026188 AMAQI
23rd Jul 2026259 AMAQI
23rd Jul 20262410 AMAQI
23rd Jul 20262511 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026231 PMAQI
23rd Jul 2026262 PMAQI
23rd Jul 2026443 PMAQI
23rd Jul 2026454 PMAQI
23rd Jul 2026455 PMAQI
23rd Jul 2026376 PMAQI
23rd Jul 2026447 PMAQI
23rd Jul 2026128 PMAQI
23rd Jul 2026119 PMAQI
23rd Jul 20263010 PMAQI
23rd Jul 20263811 PMAQI
24th Jul 20262612 AMAQI
24th Jul 2026291 AMAQI
24th Jul 2026202 AMAQI
24th Jul 2026103 AMAQI
24th Jul 2026154 AMAQI

17°C16/18°C

24th Jul 2026215 AMAQI
24th Jul 2026156 AMAQI
24th Jul 202697 AMAQI
24th Jul 202698 AMAQI
24th Jul 2026129 AMAQI
24th Jul 20261810 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20262012 PMAQI
24th Jul 2026211 PMAQI
24th Jul 2026212 PMAQI
24th Jul 2026253 PMAQI
24th Jul 2026254 PMAQI
24th Jul 2026295 PMAQI
24th Jul 2026266 PMAQI
24th Jul 2026287 PMAQI
24th Jul 2026258 PMAQI
24th Jul 2026269 PMAQI
24th Jul 20263410 PMAQI
24th Jul 20263311 PMAQI
25th Jul 20263412 AMAQI
25th Jul 2026361 AMAQI
25th Jul 2026372 AMAQI
25th Jul 2026383 AMAQI
25th Jul 2026384 AMAQI

18°C16/20°C

25th Jul 2026435 AMAQI
25th Jul 2026526 AMAQI
25th Jul 2026557 AMAQI
25th Jul 2026578 AMAQI
25th Jul 2026559 AMAQI
25th Jul 20265310 AMAQI
25th Jul 20264711 AMAQI
25th Jul 20264012 PMAQI
25th Jul 2026341 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026273 PMAQI
25th Jul 2026264 PMAQI
25th Jul 2026285 PMAQI
25th Jul 2026236 PMAQI
25th Jul 2026237 PMAQI
25th Jul 2026238 PMAQI
25th Jul 2026249 PMAQI
25th Jul 20262510 PMAQI
25th Jul 20262711 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026321 AMAQI
26th Jul 2026312 AMAQI
26th Jul 2026343 AMAQI
26th Jul 2026364 AMAQI

20°C18/20°C

26th Jul 2026415 AMAQI
26th Jul 2026396 AMAQI
26th Jul 2026377 AMAQI
26th Jul 2026308 AMAQI
26th Jul 2026279 AMAQI
26th Jul 20262610 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20262312 PMAQI
26th Jul 2026241 PMAQI
26th Jul 2026262 PMAQI
26th Jul 2026253 PMAQI
26th Jul 2026264 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026277 PMAQI
26th Jul 2026278 PMAQI
26th Jul 2026279 PMAQI
26th Jul 20262710 PMAQI
26th Jul 20262611 PMAQI
27th Jul 20262512 AMAQI
27th Jul 2026231 AMAQI
27th Jul 2026162 AMAQI
27th Jul 2026103 AMAQI
27th Jul 2026164 AMAQI

19°C18/20°C

27th Jul 2026215 AMAQI
27th Jul 2026236 AMAQI
27th Jul 2026247 AMAQI
27th Jul 2026268 AMAQI
27th Jul 2026249 AMAQI
27th Jul 20262410 AMAQI
27th Jul 20268011 AMAQI
27th Jul 20266712 PMAQI
27th Jul 2026551 PMAQI
27th Jul 2026502 PMAQI
27th Jul 2026343 PMAQI
27th Jul 2026354 PMAQI
27th Jul 2026325 PMAQI
27th Jul 2026326 PMAQI
27th Jul 2026247 PMAQI
27th Jul 2026198 PMAQI
27th Jul 2026219 PMAQI
27th Jul 20262710 PMAQI
27th Jul 20262311 PMAQI
28th Jul 20262212 AMAQI
28th Jul 2026201 AMAQI
28th Jul 2026222 AMAQI
28th Jul 2026313 AMAQI
28th Jul 2026304 AMAQI

18°C17/19°C

28th Jul 2026395 AMAQI
28th Jul 2026386 AMAQI
28th Jul 2026517 AMAQI
28th Jul 2026508 AMAQI
28th Jul 2026289 AMAQI
28th Jul 20263810 AMAQI
28th Jul 20263511 AMAQI
28th Jul 20263512 PMAQI
28th Jul 2026361 PMAQI
28th Jul 2026332 PMAQI
28th Jul 2026383 PMAQI
28th Jul 2026444 PMAQI
28th Jul 2026385 PMAQI
28th Jul 2026356 PMAQI
28th Jul 2026417 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026399 PMAQI
28th Jul 20263810 PMAQI
28th Jul 20263311 PMAQI
29th Jul 20263312 AMAQI
29th Jul 2026351 AMAQI
29th Jul 2026362 AMAQI
29th Jul 2026363 AMAQI
29th Jul 2026364 AMAQI

20°C18/22°C

29th Jul 2026355 AMAQI
29th Jul 2026296 AMAQI
29th Jul 2026377 AMAQI
29th Jul 2026418 AMAQI
29th Jul 2026449 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20264611 AMAQI
29th Jul 20264612 PMAQI
29th Jul 2026361 PMAQI
29th Jul 2026402 PMAQI
29th Jul 2026423 PMAQI
29th Jul 2026464 PMAQI
29th Jul 2026365 PMAQI
29th Jul 2026276 PMAQI
29th Jul 2026297 PMAQI
29th Jul 2026338 PMAQI
29th Jul 2026269 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262411 PMAQI
30th Jul 20263412 AMAQI
30th Jul 2026351 AMAQI
30th Jul 2026442 AMAQI
30th Jul 2026443 AMAQI
30th Jul 2026454 AMAQI

23°C20/26°C

30th Jul 2026405 AMAQI
30th Jul 2026396 AMAQI
30th Jul 2026377 AMAQI
30th Jul 2026378 AMAQI
30th Jul 2026409 AMAQI
30th Jul 20264010 AMAQI
30th Jul 20263111 AMAQI
30th Jul 20263912 PMAQI
30th Jul 2026381 PMAQI
30th Jul 2026372 PMAQI
30th Jul 2026453 PMAQI
30th Jul 2026344 PMAQI
30th Jul 2026395 PMAQI
30th Jul 2026316 PMAQI
30th Jul 2026267 PMAQI
30th Jul 2026358 PMAQI
30th Jul 2026409 PMAQI
30th Jul 20263810 PMAQI
30th Jul 20263211 PMAQI
31st Jul 20263312 AMAQI
31st Jul 2026531 AMAQI
31st Jul 2026392 AMAQI
31st Jul 2026403 AMAQI
31st Jul 2026404 AMAQI

21°C19/23°C

31st Jul 2026365 AMAQI
31st Jul 2026386 AMAQI
31st Jul 2026497 AMAQI
31st Jul 2026508 AMAQI
31st Jul 2026549 AMAQI
31st Jul 20265410 AMAQI
31st Jul 20265111 AMAQI
31st Jul 20264912 PMAQI
31st Jul 2026281 PMAQI
31st Jul 2026262 PMAQI
31st Jul 2026283 PMAQI
31st Jul 2026264 PMAQI
31st Jul 2026215 PMAQI
31st Jul 2026126 PMAQI
31st Jul 2026117 PMAQI
31st Jul 2026178 PMAQI
31st Jul 2026169 PMAQI
31st Jul 20261610 PMAQI
31st Jul 20262311 PMAQI
1st Aug 20261612 AMAQI
1st Aug 2026221 AMAQI
1st Aug 2026222 AMAQI
1st Aug 2026263 AMAQI
1st Aug 2026254 AMAQI

19°C16/20°C

1st Aug 2026235 AMAQI
1st Aug 2026266 AMAQI
1st Aug 2026227 AMAQI
1st Aug 2026238 AMAQI
1st Aug 2026239 AMAQI
1st Aug 20262010 AMAQI
1st Aug 20262611 AMAQI
1st Aug 20262712 PMAQI
1st Aug 2026291 PMAQI
1st Aug 2026262 PMAQI
1st Aug 2026283 PMAQI
1st Aug 2026264 PMAQI
1st Aug 2026285 PMAQI
1st Aug 2026256 PMAQI
1st Aug 2026277 PMAQI
1st Aug 2026288 PMAQI
1st Aug 2026319 PMAQI
1st Aug 20262810 PMAQI
1st Aug 20262211 PMAQI
2nd Aug 20261912 AMAQI
2nd Aug 2026321 AMAQI
2nd Aug 2026282 AMAQI
2nd Aug 2026253 AMAQI
2nd Aug 2026304 AMAQI

18°C15/20°C

2nd Aug 2026255 AMAQI
2nd Aug 2026306 AMAQI
2nd Aug 2026257 AMAQI
2nd Aug 2026228 AMAQI
2nd Aug 2026249 AMAQI
2nd Aug 20262910 AMAQI
2nd Aug 20265211 AMAQI
2nd Aug 20263112 PMAQI
2nd Aug 2026491 PMAQI
2nd Aug 2026282 PMAQI
2nd Aug 2026273 PMAQI
2nd Aug 2026324 PMAQI
2nd Aug 2026485 PMAQI
2nd Aug 2026386 PMAQI
2nd Aug 2026317 PMAQI
2nd Aug 2026278 PMAQI
2nd Aug 2026359 PMAQI
2nd Aug 20262310 PMAQI
2nd Aug 20262511 PMAQI
3rd Aug 20262012 AMAQI
3rd Aug 2026221 AMAQI
3rd Aug 2026222 AMAQI
3rd Aug 2026223 AMAQI
3rd Aug 2026184 AMAQI

20°C16/23°C

3rd Aug 2026205 AMAQI
3rd Aug 2026256 AMAQI
3rd Aug 2026287 AMAQI
3rd Aug 2026288 AMAQI
3rd Aug 2026259 AMAQI
3rd Aug 20262510 AMAQI
3rd Aug 20262611 AMAQI
3rd Aug 20263312 PMAQI
3rd Aug 2026341 PMAQI
3rd Aug 2026372 PMAQI
3rd Aug 2026413 PMAQI
3rd Aug 2026524 PMAQI
3rd Aug 2026405 PMAQI
3rd Aug 2026486 PMAQI
3rd Aug 2026527 PMAQI
3rd Aug 2026438 PMAQI
3rd Aug 2026409 PMAQI
3rd Aug 20264510 PMAQI
3rd Aug 20263911 PMAQI
4th Aug 20263912 AMAQI
4th Aug 2026411 AMAQI
4th Aug 2026382 AMAQI
4th Aug 2026443 AMAQI
4th Aug 2026464 AMAQI

22°C19/28°C

4th Aug 2026475 AMAQI
4th Aug 2026486 AMAQI
4th Aug 2026477 AMAQI
4th Aug 2026488 AMAQI
4th Aug 2026479 AMAQI
4th Aug 20265110 AMAQI
4th Aug 20265211 AMAQI
4th Aug 20265112 PMAQI
4th Aug 2026441 PMAQI
4th Aug 2026442 PMAQI
4th Aug 2026453 PMAQI
4th Aug 2026444 PMAQI
4th Aug 2026455 PMAQI
4th Aug 2026496 PMAQI
4th Aug 2026457 PMAQI
4th Aug 2026428 PMAQI
4th Aug 2026409 PMAQI
4th Aug 20264010 PMAQI
4th Aug 20263811 PMAQI
5th Aug 20263412 AMAQI
5th Aug 2026301 AMAQI
5th Aug 2026222 AMAQI
5th Aug 2026163 AMAQI
5th Aug 2026244 AMAQI

23°C21/26°C

5th Aug 2026245 AMAQI
5th Aug 2026246 AMAQI
5th Aug 2026157 AMAQI
5th Aug 2026148 AMAQI
5th Aug 2026179 AMAQI
5th Aug 20261410 AMAQI
5th Aug 20261511 AMAQI
5th Aug 20262012 PMAQI
5th Aug 2026241 PMAQI
5th Aug 2026362 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026224 PMAQI
5th Aug 2026225 PMAQI
5th Aug 2026226 PMAQI
5th Aug 2026197 PMAQI
5th Aug 2026238 PMAQI
5th Aug 2026249 PMAQI
5th Aug 20262210 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262612 AMAQI
6th Aug 2026261 AMAQI
6th Aug 2026272 AMAQI
6th Aug 2026263 AMAQI
6th Aug 2026264 AMAQI

21°C20/22°C

6th Aug 2026255 AMAQI
5 AM
6th Aug 2026246 AMAQI
6th Aug 2026217 AMAQI
6th Aug 2026228 AMAQI
6th Aug 2026279 AMAQI
6th Aug 20263310 AMAQI
6th Aug 20263211 AMAQI
6th Aug 20262712 PMAQI
6th Aug 2026281 PMAQI
1 PM
6th Aug 2026342 PMAQI
6th Aug 2026353 PMAQI
6th Aug 2026314 PMAQI
6th Aug 2026325 PMAQI
6th Aug 2026336 PMAQI
6th Aug 2026217 PMAQI
6th Aug 2026258 PMAQI
6th Aug 2026259 PMAQI
9 PM
6th Aug 20263010 PMAQI
6th Aug 20262111 PMAQI
1 AM
4 AM

18°C17/20°C

Day time
Avg. Highest Time
11 AM

32AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
5 AM - 6 AM

27AQI

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. 32), while the lowest AQI was between 5 AM to 6 AM (Avg. 27).
Night time
Avg. Highest Time
10 PM

28AQI

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

25AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 PM to 10 PM (Avg. 28), while the lowest AQI was between 12 AM to 12 AM (Avg. 25).

2026 Days Vs Air Quality

Haarlem, Noord Holland, Netherlands

2026

80%

172

17%

37

2%

5

Total number of days with different AQI categories in last 218 days in 2026 (147 days remaining)

Good
172 Days
Moderate
37 Days
Poor
5 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 80%

Health Risk Level:

Low

In 2026, 80% of 218 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

Haarlem, Noord Holland, Netherlands

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
33AQI (US)
2nd January 2026
24AQI (US)
3rd January 2026
21AQI (US)
4th January 2026
19AQI (US)
5th January 2026
33AQI (US)
6th January 2026
22AQI (US)
7th January 2026
55AQI (US)
8th January 2026
41AQI (US)
9th January 2026
40AQI (US)
10th January 2026
38AQI (US)
11th January 2026
54AQI (US)
12th January 2026
44AQI (US)
13th January 2026
41AQI (US)
14th January 2026
29AQI (US)
15th January 2026
40AQI (US)
16th January 2026
26AQI (US)
17th January 2026
53AQI (US)
18th January 2026
73AQI (US)
19th January 2026
80AQI (US)
20th January 2026
74AQI (US)
21st January 2026
53AQI (US)
22nd January 2026
78AQI (US)
23rd January 2026
95AQI (US)
24th January 2026
107AQI (US)
25th January 2026
142AQI (US)
26th January 2026
86AQI (US)
27th January 2026
58AQI (US)
28th January 2026
88AQI (US)
29th January 2026
88AQI (US)
30th January 2026
88AQI (US)
31st January 2026
73AQI (US)
1st February 2026
65AQI (US)
2nd February 2026
93AQI (US)
3rd February 2026
103AQI (US)
4th February 2026
81AQI (US)
5th February 2026
125AQI (US)
6th February 2026
102AQI (US)
7th February 2026
44AQI (US)
8th February 2026
51AQI (US)
9th February 2026
73AQI (US)
10th February 2026
69AQI (US)
11th February 2026
46AQI (US)
12th February 2026
35AQI (US)
13th February 2026
27AQI (US)
14th February 2026
27AQI (US)
15th February 2026
58AQI (US)
16th February 2026
29AQI (US)
17th February 2026
25AQI (US)
18th February 2026
52AQI (US)
19th February 2026
59AQI (US)
20th February 2026
56AQI (US)
21st February 2026
32AQI (US)
22nd February 2026
23AQI (US)
23rd February 2026
31AQI (US)
24th February 2026
46AQI (US)
25th February 2026
38AQI (US)
26th February 2026
41AQI (US)
27th February 2026
50AQI (US)
28th February 2026
29AQI (US)
1st March 2026
30AQI (US)
2nd March 2026
26AQI (US)
3rd March 2026
48AQI (US)
4th March 2026
43AQI (US)
5th March 2026
66AQI (US)
6th March 2026
65AQI (US)
7th March 2026
76AQI (US)
8th March 2026
81AQI (US)
9th March 2026
88AQI (US)
10th March 2026
100AQI (US)
11th March 2026
41AQI (US)
12th March 2026
27AQI (US)
13th March 2026
25AQI (US)
14th March 2026
24AQI (US)
15th March 2026
23AQI (US)
16th March 2026
21AQI (US)
17th March 2026
38AQI (US)
18th March 2026
34AQI (US)
19th March 2026
57AQI (US)
20th March 2026
36AQI (US)
21st March 2026
35AQI (US)
22nd March 2026
69AQI (US)
23rd March 2026
81AQI (US)
24th March 2026
90AQI (US)
25th March 2026
28AQI (US)
26th March 2026
20AQI (US)
27th March 2026
25AQI (US)
28th March 2026
27AQI (US)
29th March 2026
18AQI (US)
30th March 2026
21AQI (US)
31st March 2026
23AQI (US)
1st April 2026
34AQI (US)
2nd April 2026
42AQI (US)
3rd April 2026
28AQI (US)
4th April 2026
20AQI (US)
5th April 2026
28AQI (US)
6th April 2026
17AQI (US)
7th April 2026
18AQI (US)
8th April 2026
20AQI (US)
9th April 2026
33AQI (US)
10th April 2026
26AQI (US)
11th April 2026
25AQI (US)
12th April 2026
22AQI (US)
13th April 2026
23AQI (US)
14th April 2026
35AQI (US)
15th April 2026
38AQI (US)
16th April 2026
29AQI (US)
17th April 2026
18th April 2026
19AQI (US)
19th April 2026
17AQI (US)
20th April 2026
14AQI (US)
21st April 2026
18AQI (US)
22nd April 2026
23rd April 2026
20AQI (US)
24th April 2026
24AQI (US)
25th April 2026
26AQI (US)
26th April 2026
17AQI (US)
27th April 2026
16AQI (US)
28th April 2026
20AQI (US)
29th April 2026
17AQI (US)
30th April 2026
17AQI (US)
1st May 2026
20AQI (US)
2nd May 2026
36AQI (US)
3rd May 2026
47AQI (US)
4th May 2026
55AQI (US)
5th May 2026
19AQI (US)
6th May 2026
20AQI (US)
7th May 2026
20AQI (US)
8th May 2026
29AQI (US)
9th May 2026
10th May 2026
27AQI (US)
11th May 2026
19AQI (US)
12th May 2026
23AQI (US)
13th May 2026
20AQI (US)
14th May 2026
19AQI (US)
15th May 2026
26AQI (US)
16th May 2026
34AQI (US)
17th May 2026
38AQI (US)
18th May 2026
36AQI (US)
19th May 2026
32AQI (US)
20th May 2026
32AQI (US)
21st May 2026
31AQI (US)
22nd May 2026
35AQI (US)
23rd May 2026
41AQI (US)
24th May 2026
49AQI (US)
25th May 2026
38AQI (US)
26th May 2026
30AQI (US)
27th May 2026
24AQI (US)
28th May 2026
18AQI (US)
29th May 2026
32AQI (US)
30th May 2026
36AQI (US)
31st May 2026
34AQI (US)
1st June 2026
25AQI (US)
2nd June 2026
24AQI (US)
3rd June 2026
20AQI (US)
4th June 2026
20AQI (US)
5th June 2026
19AQI (US)
6th June 2026
20AQI (US)
7th June 2026
20AQI (US)
8th June 2026
22AQI (US)
9th June 2026
15AQI (US)
10th June 2026
18AQI (US)
11th June 2026
13AQI (US)
12th June 2026
20AQI (US)
13th June 2026
22AQI (US)
14th June 2026
20AQI (US)
15th June 2026
18AQI (US)
16th June 2026
25AQI (US)
17th June 2026
21AQI (US)
18th June 2026
16AQI (US)
19th June 2026
22AQI (US)
20th June 2026
20AQI (US)
21st June 2026
16AQI (US)
22nd June 2026
17AQI (US)
23rd June 2026
19AQI (US)
24th June 2026
27AQI (US)
25th June 2026
57AQI (US)
26th June 2026
41AQI (US)
27th June 2026
41AQI (US)
28th June 2026
23AQI (US)
29th June 2026
18AQI (US)
30th June 2026
17AQI (US)
1st July 2026
19AQI (US)
2nd July 2026
22AQI (US)
3rd July 2026
16AQI (US)
4th July 2026
18AQI (US)
5th July 2026
12AQI (US)
6th July 2026
16AQI (US)
7th July 2026
19AQI (US)
8th July 2026
11AQI (US)
9th July 2026
15AQI (US)
10th July 2026
22AQI (US)
11th July 2026
25AQI (US)
12th July 2026
26AQI (US)
13th July 2026
26AQI (US)
14th July 2026
23AQI (US)
15th July 2026
22AQI (US)
16th July 2026
20AQI (US)
17th July 2026
37AQI (US)
18th July 2026
42AQI (US)
19th July 2026
30AQI (US)
20th July 2026
26AQI (US)
21st July 2026
29AQI (US)
22nd July 2026
26AQI (US)
23rd July 2026
27AQI (US)
24th July 2026
22AQI (US)
25th July 2026
36AQI (US)
26th July 2026
29AQI (US)
27th July 2026
30AQI (US)
28th July 2026
36AQI (US)
29th July 2026
36AQI (US)
30th July 2026
38AQI (US)
31st July 2026
34AQI (US)
1st August 2026
25AQI (US)
2nd August 2026
31AQI (US)
3rd August 2026
33AQI (US)
4th August 2026
45AQI (US)
5th August 2026
22AQI (US)
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

58AQI (US)

54AQI (US)

45AQI (US)

24AQI (US)

31AQI (US)

23AQI (US)

25AQI (US)

31AQI (US)

No. of days

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

202637AQI (US)

14
15
2
15
10
3
21
10
28
29
1
29
1
31
5
172
37
5

Highest AQI (US) recorded in

January

58AQI (US)

Lowest AQI (US) recorded in

June

23AQI (US)

202539AQI (US)

22
8
1
10
17
1
12
17
2
27
3
30
1
29
1
30
1
29
2
29
1
22
9
24
6
17
14
281
80
4

Highest AQI (US) recorded in

February

61AQI (US)

Lowest AQI (US) recorded in

September

24AQI (US)

202436AQI (US)

28
3
28
1
23
8
30
27
4
29
1
31
30
1
25
5
30
1
22
8
23
8
326
40

Highest AQI (US) recorded in

March

42AQI (US)

Lowest AQI (US) recorded in

July

29AQI (US)

202334AQI (US)

28
3
20
7
1
29
2
23
7
28
3
30
31
31
26
4
31
29
29
2
335
28
1

Highest AQI (US) recorded in

February

47AQI (US)

Lowest AQI (US) recorded in

August

23AQI (US)

202239AQI (US)

23
8
21
13
17
1
29
1
29
2
29
1
22
2
1
27
1
31
26
4
19
12
270
48
1

Highest AQI (US) recorded in

March

58AQI (US)

Lowest AQI (US) recorded in

August

28AQI (US)

202134AQI (US)

29
1
21
7
22
9
28
2
31
22
8
28
3
31
24
6
31
30
28
3
325
39

Highest AQI (US) recorded in

March

44AQI (US)

Lowest AQI (US) recorded in

November

20AQI (US)

202035AQI (US)

9
4
17
4
18
28
2
30
1
21
10
26
4
31
21
9
27
4
228
38

Highest AQI (US) recorded in

March

41AQI (US)

Lowest AQI (US) recorded in

October

27AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
39AQI (US)
Least Polluted Year Recorded
2021(Avg.)
34AQI (US)

Haarlem's annual 2026 AQI (US) (37) shows an average percentage change of 2.6% (worsened AQI (US)) compared to previous years: 2020 (35), 2021 (34), 2022 (39), 2023 (34), 2024 (36), 2025 (39).