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

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
28th Aug 2024
53AQI
Lowest AQI recorded on
6th Aug 2023
15AQI

Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 19 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025

Haarlem, Noord Holland, Netherlands

AQI
Day
Night
.

5 AM1st Aug 2025

9 PM

4 AM2nd Aug 2025

Day time
Avg. Highest Time
11AM1st Aug

20AQI

Avg. Lowest Time
12PM1st Aug

16AQI

Night time
Avg. Highest Time
10PM1st Aug

22AQI

Avg. Lowest Time
4AM2nd Aug

19AQI

In the last 24 hours,

Haarlem's AQI reached its highest point of 22 at 10 PM during the Night, while the lowest point, 16, was recorded at 12 PM during the Day between 1st Aug and 2nd Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Haarlem, Noord Holland, Netherlands

JulAug
03rd - 04th04th - 05th05th - 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 - 31st31st - 01st01st - 02nd02nd
Day
Night
3rd Jul 2025245 AMAQI
3rd Jul 2025246 AMAQI
3rd Jul 2025247 AMAQI
3rd Jul 2025248 AMAQI
3rd Jul 2025249 AMAQI
3rd Jul 20252410 AMAQI
3rd Jul 20252111 AMAQI
3rd Jul 20252212 PMAQI
3rd Jul 2025221 PMAQI
3rd Jul 2025232 PMAQI
3rd Jul 2025233 PMAQI
3rd Jul 2025244 PMAQI
3rd Jul 2025255 PMAQI
3rd Jul 2025246 PMAQI
3rd Jul 2025237 PMAQI
3rd Jul 2025238 PMAQI
3rd Jul 2025249 PMAQI
3rd Jul 20252610 PMAQI
3rd Jul 20252611 PMAQI
4th Jul 20252612 AMAQI
4th Jul 2025271 AMAQI
4th Jul 2025202 AMAQI
4th Jul 2025183 AMAQI
4th Jul 2025214 AMAQI

16°C15/17°C

4th Jul 2025205 AMAQI
4th Jul 2025196 AMAQI
4th Jul 2025207 AMAQI
4th Jul 2025228 AMAQI
4th Jul 2025239 AMAQI
4th Jul 20252510 AMAQI
4th Jul 20252411 AMAQI
4th Jul 20252212 PMAQI
4th Jul 2025231 PMAQI
4th Jul 2025232 PMAQI
4th Jul 2025233 PMAQI
4th Jul 2025224 PMAQI
4th Jul 2025225 PMAQI
4th Jul 2025226 PMAQI
4th Jul 2025227 PMAQI
4th Jul 2025228 PMAQI
4th Jul 2025229 PMAQI
4th Jul 20252110 PMAQI
4th Jul 20252211 PMAQI
5th Jul 20252212 AMAQI
5th Jul 2025221 AMAQI
5th Jul 2025202 AMAQI
5th Jul 2025203 AMAQI
5th Jul 2025214 AMAQI

18°C15/19°C

5th Jul 2025225 AMAQI
5th Jul 2025236 AMAQI
5th Jul 2025247 AMAQI
5th Jul 2025268 AMAQI
5th Jul 2025259 AMAQI
5th Jul 20252410 AMAQI
5th Jul 20252311 AMAQI
5th Jul 20252112 PMAQI
5th Jul 2025201 PMAQI
5th Jul 2025212 PMAQI
5th Jul 2025213 PMAQI
5th Jul 2025214 PMAQI
5th Jul 2025215 PMAQI
5th Jul 2025216 PMAQI
5th Jul 2025217 PMAQI
5th Jul 2025238 PMAQI
5th Jul 2025249 PMAQI
5th Jul 20252210 PMAQI
5th Jul 20252211 PMAQI
6th Jul 20252212 AMAQI
6th Jul 2025221 AMAQI
6th Jul 2025232 AMAQI
6th Jul 2025243 AMAQI
6th Jul 2025234 AMAQI

18°C17/18°C

6th Jul 2025235 AMAQI
6th Jul 2025216 AMAQI
6th Jul 2025237 AMAQI
6th Jul 2025258 AMAQI
6th Jul 2025239 AMAQI
6th Jul 20252010 AMAQI
6th Jul 20251911 AMAQI
6th Jul 20251912 PMAQI
6th Jul 2025181 PMAQI
6th Jul 2025202 PMAQI
6th Jul 2025193 PMAQI
6th Jul 2025184 PMAQI
6th Jul 2025185 PMAQI
6th Jul 2025196 PMAQI
6th Jul 2025197 PMAQI
6th Jul 2025198 PMAQI
6th Jul 2025209 PMAQI
6th Jul 20252010 PMAQI
6th Jul 20252011 PMAQI
7th Jul 20252112 AMAQI
7th Jul 2025211 AMAQI
7th Jul 2025182 AMAQI
7th Jul 2025153 AMAQI
7th Jul 2025154 AMAQI

17°C15/18°C

7th Jul 2025165 AMAQI
7th Jul 2025186 AMAQI
7th Jul 2025177 AMAQI
7th Jul 2025178 AMAQI
7th Jul 2025179 AMAQI
7th Jul 20251710 AMAQI
7th Jul 20251811 AMAQI
7th Jul 20251812 PMAQI
7th Jul 2025191 PMAQI
7th Jul 2025182 PMAQI
7th Jul 2025183 PMAQI
7th Jul 2025194 PMAQI
7th Jul 2025195 PMAQI
7th Jul 2025196 PMAQI
7th Jul 2025197 PMAQI
7th Jul 2025208 PMAQI
7th Jul 2025199 PMAQI
7th Jul 20251810 PMAQI
7th Jul 20251811 PMAQI
8th Jul 20251812 AMAQI
8th Jul 2025191 AMAQI
8th Jul 2025192 AMAQI
8th Jul 2025223 AMAQI
8th Jul 2025234 AMAQI

16°C15/17°C

8th Jul 2025205 AMAQI
8th Jul 2025226 AMAQI
8th Jul 2025207 AMAQI
8th Jul 2025198 AMAQI
8th Jul 2025239 AMAQI
8th Jul 20252310 AMAQI
8th Jul 20252811 AMAQI
8th Jul 20252912 PMAQI
8th Jul 2025291 PMAQI
8th Jul 2025252 PMAQI
8th Jul 2025223 PMAQI
8th Jul 2025194 PMAQI
8th Jul 2025185 PMAQI
8th Jul 2025186 PMAQI
8th Jul 2025207 PMAQI
8th Jul 2025208 PMAQI
8th Jul 2025209 PMAQI
8th Jul 20252110 PMAQI
8th Jul 20252111 PMAQI
9th Jul 20252212 AMAQI
9th Jul 2025231 AMAQI
9th Jul 2025222 AMAQI
9th Jul 2025233 AMAQI
9th Jul 2025224 AMAQI

15°C14/17°C

9th Jul 2025225 AMAQI
9th Jul 2025226 AMAQI
9th Jul 2025217 AMAQI
9th Jul 2025208 AMAQI
9th Jul 2025229 AMAQI
9th Jul 20252510 AMAQI
9th Jul 20252411 AMAQI
9th Jul 20252312 PMAQI
9th Jul 2025241 PMAQI
9th Jul 2025222 PMAQI
9th Jul 2025213 PMAQI
9th Jul 2025214 PMAQI
9th Jul 2025235 PMAQI
9th Jul 2025226 PMAQI
9th Jul 2025247 PMAQI
9th Jul 2025238 PMAQI
9th Jul 2025229 PMAQI
9th Jul 20252210 PMAQI
9th Jul 20252211 PMAQI
10th Jul 20252212 AMAQI
10th Jul 2025231 AMAQI
10th Jul 2025242 AMAQI
10th Jul 2025263 AMAQI
10th Jul 2025264 AMAQI

17°C15/18°C

10th Jul 2025265 AMAQI
10th Jul 2025266 AMAQI
10th Jul 2025307 AMAQI
10th Jul 2025338 AMAQI
10th Jul 2025359 AMAQI
10th Jul 20253910 AMAQI
10th Jul 20253611 AMAQI
10th Jul 20253612 PMAQI
10th Jul 2025291 PMAQI
10th Jul 2025252 PMAQI
10th Jul 2025233 PMAQI
10th Jul 2025224 PMAQI
10th Jul 2025215 PMAQI
10th Jul 2025216 PMAQI
10th Jul 2025207 PMAQI
10th Jul 2025238 PMAQI
10th Jul 2025249 PMAQI
10th Jul 20252510 PMAQI
10th Jul 20252511 PMAQI
11th Jul 20252512 AMAQI
11th Jul 2025261 AMAQI
11th Jul 2025232 AMAQI
11th Jul 2025203 AMAQI
11th Jul 2025214 AMAQI

18°C16/19°C

11th Jul 2025215 AMAQI
11th Jul 2025246 AMAQI
11th Jul 2025247 AMAQI
11th Jul 2025238 AMAQI
11th Jul 2025239 AMAQI
11th Jul 20252210 AMAQI
11th Jul 20252011 AMAQI
11th Jul 20252012 PMAQI
11th Jul 2025201 PMAQI
11th Jul 2025212 PMAQI
11th Jul 2025213 PMAQI
11th Jul 2025214 PMAQI
11th Jul 2025215 PMAQI
11th Jul 2025206 PMAQI
11th Jul 2025217 PMAQI
11th Jul 2025218 PMAQI
11th Jul 2025229 PMAQI
11th Jul 20252310 PMAQI
11th Jul 20252211 PMAQI
12th Jul 20252312 AMAQI
12th Jul 2025231 AMAQI
12th Jul 2025202 AMAQI
12th Jul 2025183 AMAQI
12th Jul 2025194 AMAQI

18°C16/20°C

12th Jul 2025195 AMAQI
12th Jul 2025226 AMAQI
12th Jul 2025207 AMAQI
12th Jul 2025218 AMAQI
12th Jul 2025259 AMAQI
12th Jul 20252010 AMAQI
12th Jul 20252011 AMAQI
12th Jul 20251912 PMAQI
12th Jul 2025191 PMAQI
12th Jul 2025202 PMAQI
12th Jul 2025203 PMAQI
12th Jul 2025204 PMAQI
12th Jul 2025205 PMAQI
12th Jul 2025216 PMAQI
12th Jul 2025207 PMAQI
12th Jul 2025208 PMAQI
12th Jul 2025209 PMAQI
12th Jul 20252110 PMAQI
12th Jul 20252111 PMAQI
13th Jul 20252112 AMAQI
13th Jul 2025211 AMAQI
13th Jul 2025232 AMAQI
13th Jul 2025273 AMAQI
13th Jul 2025284 AMAQI

18°C16/20°C

13th Jul 2025295 AMAQI
13th Jul 2025286 AMAQI
13th Jul 2025297 AMAQI
13th Jul 2025308 AMAQI
13th Jul 2025309 AMAQI
13th Jul 20252910 AMAQI
13th Jul 20252811 AMAQI
13th Jul 20252812 PMAQI
13th Jul 2025281 PMAQI
13th Jul 2025282 PMAQI
13th Jul 2025283 PMAQI
13th Jul 2025294 PMAQI
13th Jul 2025285 PMAQI
13th Jul 2025276 PMAQI
13th Jul 2025277 PMAQI
13th Jul 2025248 PMAQI
13th Jul 2025249 PMAQI
13th Jul 20252610 PMAQI
13th Jul 20252611 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025271 AMAQI
14th Jul 2025242 AMAQI
14th Jul 2025253 AMAQI
14th Jul 2025264 AMAQI

19°C17/20°C

14th Jul 2025265 AMAQI
14th Jul 2025286 AMAQI
14th Jul 2025267 AMAQI
14th Jul 2025248 AMAQI
14th Jul 2025249 AMAQI
14th Jul 20252410 AMAQI
14th Jul 20252511 AMAQI
14th Jul 20252412 PMAQI
14th Jul 2025241 PMAQI
14th Jul 2025262 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025355 PMAQI
14th Jul 2025356 PMAQI
14th Jul 2025307 PMAQI
14th Jul 2025288 PMAQI
14th Jul 2025289 PMAQI
14th Jul 20252710 PMAQI
14th Jul 20252711 PMAQI
15th Jul 20252712 AMAQI
15th Jul 2025261 AMAQI
15th Jul 2025282 AMAQI
15th Jul 2025263 AMAQI
15th Jul 2025264 AMAQI

19°C17/21°C

15th Jul 2025295 AMAQI
15th Jul 2025286 AMAQI
15th Jul 2025287 AMAQI
15th Jul 2025278 AMAQI
15th Jul 2025299 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252311 AMAQI
15th Jul 20252312 PMAQI
15th Jul 2025241 PMAQI
15th Jul 2025252 PMAQI
15th Jul 2025263 PMAQI
15th Jul 2025254 PMAQI
15th Jul 2025245 PMAQI
15th Jul 2025266 PMAQI
15th Jul 2025297 PMAQI
15th Jul 2025288 PMAQI
15th Jul 2025279 PMAQI
15th Jul 20252710 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252712 AMAQI
16th Jul 2025271 AMAQI
16th Jul 2025282 AMAQI
16th Jul 2025303 AMAQI
16th Jul 2025314 AMAQI

19°C18/19°C

16th Jul 2025235 AMAQI
16th Jul 2025186 AMAQI
16th Jul 2025207 AMAQI
16th Jul 2025198 AMAQI
16th Jul 2025219 AMAQI
16th Jul 20252010 AMAQI
16th Jul 20252311 AMAQI
16th Jul 20252312 PMAQI
16th Jul 2025241 PMAQI
16th Jul 2025242 PMAQI
16th Jul 2025273 PMAQI
16th Jul 2025244 PMAQI
16th Jul 2025235 PMAQI
16th Jul 2025246 PMAQI
16th Jul 2025267 PMAQI
16th Jul 2025268 PMAQI
16th Jul 2025249 PMAQI
16th Jul 20252410 PMAQI
16th Jul 20252411 PMAQI
17th Jul 20252412 AMAQI
17th Jul 2025241 AMAQI
17th Jul 2025232 AMAQI
17th Jul 2025223 AMAQI
17th Jul 2025204 AMAQI

17°C15/18°C

17th Jul 2025195 AMAQI
17th Jul 2025216 AMAQI
17th Jul 2025217 AMAQI
17th Jul 2025218 AMAQI
17th Jul 2025239 AMAQI
17th Jul 20252210 AMAQI
17th Jul 20252111 AMAQI
17th Jul 20252112 PMAQI
17th Jul 2025211 PMAQI
17th Jul 2025212 PMAQI
17th Jul 2025213 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025225 PMAQI
17th Jul 2025226 PMAQI
17th Jul 2025217 PMAQI
17th Jul 2025228 PMAQI
17th Jul 2025219 PMAQI
17th Jul 20252210 PMAQI
17th Jul 20252211 PMAQI
18th Jul 20252212 AMAQI
18th Jul 2025221 AMAQI
18th Jul 2025212 AMAQI
18th Jul 2025203 AMAQI
18th Jul 2025214 AMAQI

18°C17/19°C

18th Jul 2025205 AMAQI
18th Jul 2025216 AMAQI
18th Jul 2025237 AMAQI
18th Jul 2025238 AMAQI
18th Jul 2025269 AMAQI
18th Jul 20252710 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252812 PMAQI
18th Jul 2025261 PMAQI
18th Jul 2025252 PMAQI
18th Jul 2025253 PMAQI
18th Jul 2025244 PMAQI
18th Jul 2025235 PMAQI
18th Jul 2025236 PMAQI
18th Jul 2025227 PMAQI
18th Jul 2025228 PMAQI
18th Jul 2025229 PMAQI
18th Jul 20252310 PMAQI
18th Jul 20252411 PMAQI
19th Jul 20252312 AMAQI
19th Jul 2025231 AMAQI
19th Jul 2025342 AMAQI
19th Jul 2025383 AMAQI
19th Jul 2025384 AMAQI

19°C16/22°C

19th Jul 2025375 AMAQI
19th Jul 2025406 AMAQI
19th Jul 2025427 AMAQI
19th Jul 2025438 AMAQI
19th Jul 2025429 AMAQI
19th Jul 20254110 AMAQI
19th Jul 20254011 AMAQI
19th Jul 20253812 PMAQI
19th Jul 2025351 PMAQI
19th Jul 2025362 PMAQI
19th Jul 2025363 PMAQI
19th Jul 2025384 PMAQI
19th Jul 2025375 PMAQI
19th Jul 2025366 PMAQI
19th Jul 2025377 PMAQI
19th Jul 2025378 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253612 AMAQI
20th Jul 2025361 AMAQI
20th Jul 2025472 AMAQI
20th Jul 2025543 AMAQI
20th Jul 2025454 AMAQI

22°C18/27°C

20th Jul 2025375 AMAQI
20th Jul 2025396 AMAQI
20th Jul 2025417 AMAQI
20th Jul 2025438 AMAQI
20th Jul 2025449 AMAQI
20th Jul 20254810 AMAQI
20th Jul 20255411 AMAQI
20th Jul 20254812 PMAQI
20th Jul 2025431 PMAQI
20th Jul 2025402 PMAQI
20th Jul 2025393 PMAQI
20th Jul 2025374 PMAQI
20th Jul 2025375 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025389 PMAQI
20th Jul 20254310 PMAQI
20th Jul 20254311 PMAQI
21st Jul 20254312 AMAQI
21st Jul 2025441 AMAQI
21st Jul 2025282 AMAQI
21st Jul 2025233 AMAQI
21st Jul 2025224 AMAQI

19°C17/22°C

21st Jul 2025225 AMAQI
21st Jul 2025226 AMAQI
21st Jul 2025197 AMAQI
21st Jul 2025198 AMAQI
21st Jul 2025199 AMAQI
21st Jul 20252210 AMAQI
21st Jul 20252311 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025231 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025245 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025237 PMAQI
21st Jul 2025238 PMAQI
21st Jul 2025249 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20252511 PMAQI
22nd Jul 20252412 AMAQI
22nd Jul 2025261 AMAQI
22nd Jul 2025202 AMAQI
22nd Jul 2025193 AMAQI
22nd Jul 2025204 AMAQI

19°C17/21°C

22nd Jul 2025195 AMAQI
22nd Jul 2025196 AMAQI
22nd Jul 2025217 AMAQI
22nd Jul 2025198 AMAQI
22nd Jul 2025189 AMAQI
22nd Jul 20251810 AMAQI
22nd Jul 20251711 AMAQI
22nd Jul 20251812 PMAQI
22nd Jul 2025191 PMAQI
22nd Jul 2025202 PMAQI
22nd Jul 2025213 PMAQI
22nd Jul 2025224 PMAQI
22nd Jul 2025255 PMAQI
22nd Jul 2025256 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025218 PMAQI
22nd Jul 2025209 PMAQI
22nd Jul 20252110 PMAQI
22nd Jul 20252111 PMAQI
23rd Jul 20252012 AMAQI
23rd Jul 2025211 AMAQI
23rd Jul 2025192 AMAQI
23rd Jul 2025183 AMAQI
23rd Jul 2025184 AMAQI

18°C18/19°C

23rd Jul 2025195 AMAQI
23rd Jul 2025196 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025188 AMAQI
23rd Jul 2025189 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20251911 AMAQI
23rd Jul 20251812 PMAQI
23rd Jul 2025191 PMAQI
23rd Jul 2025182 PMAQI
23rd Jul 2025183 PMAQI
23rd Jul 2025184 PMAQI
23rd Jul 2025185 PMAQI
23rd Jul 2025186 PMAQI
23rd Jul 2025197 PMAQI
23rd Jul 2025198 PMAQI
23rd Jul 2025199 PMAQI
23rd Jul 20252010 PMAQI
23rd Jul 20252011 PMAQI
24th Jul 20252012 AMAQI
24th Jul 2025191 AMAQI
24th Jul 2025262 AMAQI
24th Jul 2025283 AMAQI
24th Jul 2025294 AMAQI

19°C18/19°C

24th Jul 2025285 AMAQI
24th Jul 2025286 AMAQI
24th Jul 2025247 AMAQI
24th Jul 2025238 AMAQI
24th Jul 2025249 AMAQI
24th Jul 20252310 AMAQI
24th Jul 20252011 AMAQI
24th Jul 20252012 PMAQI
24th Jul 2025211 PMAQI
24th Jul 2025232 PMAQI
24th Jul 2025253 PMAQI
24th Jul 2025244 PMAQI
24th Jul 2025245 PMAQI
24th Jul 2025276 PMAQI
24th Jul 2025277 PMAQI
24th Jul 2025258 PMAQI
24th Jul 2025259 PMAQI
24th Jul 20252410 PMAQI
24th Jul 20252411 PMAQI
25th Jul 20252412 AMAQI
25th Jul 2025251 AMAQI
25th Jul 2025212 AMAQI
25th Jul 2025223 AMAQI
25th Jul 2025224 AMAQI

19°C17/20°C

25th Jul 2025215 AMAQI
25th Jul 2025226 AMAQI
25th Jul 2025217 AMAQI
25th Jul 2025198 AMAQI
25th Jul 2025209 AMAQI
25th Jul 20251910 AMAQI
25th Jul 20251911 AMAQI
25th Jul 20251912 PMAQI
25th Jul 2025181 PMAQI
25th Jul 2025192 PMAQI
25th Jul 2025203 PMAQI
25th Jul 2025204 PMAQI
25th Jul 2025215 PMAQI
25th Jul 2025226 PMAQI
25th Jul 2025227 PMAQI
25th Jul 2025228 PMAQI
25th Jul 2025229 PMAQI
25th Jul 20252210 PMAQI
25th Jul 20252311 PMAQI
26th Jul 20252212 AMAQI
26th Jul 2025221 AMAQI
26th Jul 2025212 AMAQI
26th Jul 2025213 AMAQI
26th Jul 2025234 AMAQI

19°C18/20°C

26th Jul 2025275 AMAQI
26th Jul 2025296 AMAQI
26th Jul 2025337 AMAQI
26th Jul 2025368 AMAQI
26th Jul 2025419 AMAQI
26th Jul 20254310 AMAQI
26th Jul 20254611 AMAQI
26th Jul 20254512 PMAQI
26th Jul 2025411 PMAQI
26th Jul 2025362 PMAQI
26th Jul 2025393 PMAQI
26th Jul 2025384 PMAQI
26th Jul 2025395 PMAQI
26th Jul 2025396 PMAQI
26th Jul 2025437 PMAQI
26th Jul 2025408 PMAQI
26th Jul 2025369 PMAQI
26th Jul 20253510 PMAQI
26th Jul 20253511 PMAQI
27th Jul 20253212 AMAQI
27th Jul 2025301 AMAQI
27th Jul 2025272 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025194 AMAQI

19°C18/21°C

27th Jul 2025175 AMAQI
27th Jul 2025176 AMAQI
27th Jul 2025187 AMAQI
27th Jul 2025198 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20251912 PMAQI
27th Jul 2025201 PMAQI
27th Jul 2025222 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025215 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252310 PMAQI
27th Jul 20252311 PMAQI
28th Jul 20252312 AMAQI
28th Jul 2025231 AMAQI
28th Jul 2025262 AMAQI
28th Jul 2025283 AMAQI
28th Jul 2025334 AMAQI

18°C17/19°C

28th Jul 2025295 AMAQI
28th Jul 2025286 AMAQI
28th Jul 2025277 AMAQI
28th Jul 2025258 AMAQI
28th Jul 2025259 AMAQI
28th Jul 20252410 AMAQI
28th Jul 20252411 AMAQI
28th Jul 20252412 PMAQI
28th Jul 2025221 PMAQI
28th Jul 2025242 PMAQI
28th Jul 2025253 PMAQI
28th Jul 2025254 PMAQI
28th Jul 2025235 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025227 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025259 PMAQI
28th Jul 20252510 PMAQI
28th Jul 20252611 PMAQI
29th Jul 20252512 AMAQI
29th Jul 2025261 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025263 AMAQI
29th Jul 2025204 AMAQI

18°C17/19°C

29th Jul 2025195 AMAQI
29th Jul 2025186 AMAQI
29th Jul 2025177 AMAQI
29th Jul 2025178 AMAQI
29th Jul 2025199 AMAQI
29th Jul 20251810 AMAQI
29th Jul 20251811 AMAQI
29th Jul 20251812 PMAQI
29th Jul 2025181 PMAQI
29th Jul 2025192 PMAQI
29th Jul 2025193 PMAQI
29th Jul 2025204 PMAQI
29th Jul 2025195 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025198 PMAQI
29th Jul 2025209 PMAQI
29th Jul 20252110 PMAQI
29th Jul 20252111 PMAQI
30th Jul 20252112 AMAQI
30th Jul 2025221 AMAQI
30th Jul 2025192 AMAQI
30th Jul 2025193 AMAQI
30th Jul 2025204 AMAQI

18°C16/19°C

30th Jul 2025185 AMAQI
30th Jul 2025186 AMAQI
30th Jul 2025197 AMAQI
30th Jul 2025198 AMAQI
30th Jul 2025189 AMAQI
30th Jul 20251810 AMAQI
30th Jul 20252111 AMAQI
30th Jul 20251912 PMAQI
30th Jul 2025211 PMAQI
30th Jul 2025212 PMAQI
30th Jul 2025213 PMAQI
30th Jul 2025214 PMAQI
30th Jul 2025205 PMAQI
30th Jul 2025206 PMAQI
30th Jul 2025207 PMAQI
30th Jul 2025208 PMAQI
30th Jul 2025199 PMAQI
30th Jul 20251910 PMAQI
30th Jul 20251911 PMAQI
31st Jul 20251912 AMAQI
31st Jul 2025191 AMAQI
31st Jul 2025192 AMAQI
31st Jul 2025193 AMAQI
31st Jul 2025234 AMAQI

17°C16/18°C

31st Jul 2025235 AMAQI
31st Jul 2025226 AMAQI
31st Jul 2025217 AMAQI
31st Jul 2025208 AMAQI
31st Jul 2025219 AMAQI
31st Jul 20252310 AMAQI
31st Jul 20252111 AMAQI
31st Jul 20252012 PMAQI
31st Jul 2025201 PMAQI
31st Jul 2025202 PMAQI
31st Jul 2025193 PMAQI
31st Jul 2025214 PMAQI
31st Jul 2025185 PMAQI
31st Jul 2025186 PMAQI
31st Jul 2025187 PMAQI
31st Jul 2025188 PMAQI
31st Jul 2025219 PMAQI
31st Jul 20252110 PMAQI
31st Jul 20252011 PMAQI
1st Aug 20252012 AMAQI
1st Aug 2025211 AMAQI
1st Aug 2025202 AMAQI
1st Aug 2025203 AMAQI
1st Aug 2025194 AMAQI

18°C17/19°C

1st Aug 2025215 AMAQI
1st Aug 2025196 AMAQI
1st Aug 2025197 AMAQI
1st Aug 2025198 AMAQI
1st Aug 2025199 AMAQI
1st Aug 20251910 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20251612 PMAQI
1st Aug 2025181 PMAQI
1st Aug 2025182 PMAQI
1st Aug 2025203 PMAQI
1st Aug 2025194 PMAQI
1st Aug 2025195 PMAQI
1st Aug 2025196 PMAQI
1st Aug 2025187 PMAQI
1st Aug 2025188 PMAQI
1st Aug 2025209 PMAQI
1st Aug 20252210 PMAQI
1st Aug 20252211 PMAQI
2nd Aug 20252112 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025192 AMAQI
2nd Aug 2025203 AMAQI
2nd Aug 2025194 AMAQI

17°C17/18°C

2nd Aug 2025185 AMAQI
5 AM
2nd Aug 2025196 AMAQI
2nd Aug 2025197 AMAQI
2nd Aug 2025178 AMAQI
2nd Aug 2025219 AMAQI
2nd Aug 20251910 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20252012 PMAQI
2nd Aug 2025191 PMAQI
1 PM
2nd Aug 2025202 PMAQI
2nd Aug 2025183 PMAQI
2nd Aug 2025194 PMAQI
9 PM
1 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 AM - 9 PM

24AQI

17 hours / Day
510 hours / Month
Avg. Lowest Time
5 AM - 9 PM

24AQI

17 hours / Day
510 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 PM (Avg. 24), while the lowest AQI was between 5 AM to 9 PM (Avg. 24).
Night time
Avg. Highest Time
12 AM - 11 PM

24AQI

7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM

24AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 24), while the lowest AQI was between 12 AM to 11 PM (Avg. 24).

2025 Days Vs Air Quality

Haarlem, Noord Holland, Netherlands

2025

76%

161

23%

48

2%

4

Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)

Good
161 Days
Moderate
48 Days
Poor
4 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 76%

Health Risk Level:

Low

In 2025, 76% of 214 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 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 January 2025
47AQI
2nd January 2025
31AQI
3rd January 2025
33AQI
4th January 2025
39AQI
5th January 2025
41AQI
6th January 2025
29AQI
7th January 2025
28AQI
8th January 2025
32AQI
9th January 2025
33AQI
10th January 2025
31AQI
11th January 2025
34AQI
12th January 2025
29AQI
13th January 2025
50AQI
14th January 2025
70AQI
15th January 2025
47AQI
16th January 2025
56AQI
17th January 2025
62AQI
18th January 2025
53AQI
19th January 2025
84AQI
20th January 2025
110AQI
21st January 2025
84AQI
22nd January 2025
73AQI
23rd January 2025
52AQI
24th January 2025
41AQI
25th January 2025
42AQI
26th January 2025
42AQI
27th January 2025
29AQI
28th January 2025
27AQI
29th January 2025
26AQI
30th January 2025
27AQI
31st January 2025
35AQI
1st February 2025
41AQI
2nd February 2025
45AQI
3rd February 2025
52AQI
4th February 2025
73AQI
5th February 2025
56AQI
6th February 2025
41AQI
7th February 2025
46AQI
8th February 2025
71AQI
9th February 2025
96AQI
10th February 2025
104AQI
11th February 2025
90AQI
12th February 2025
83AQI
13th February 2025
100AQI
14th February 2025
65AQI
15th February 2025
66AQI
16th February 2025
69AQI
17th February 2025
58AQI
18th February 2025
67AQI
19th February 2025
69AQI
20th February 2025
77AQI
21st February 2025
54AQI
22nd February 2025
50AQI
23rd February 2025
48AQI
24th February 2025
37AQI
25th February 2025
52AQI
26th February 2025
34AQI
27th February 2025
29AQI
28th February 2025
35AQI
1st March 2025
32AQI
2nd March 2025
53AQI
3rd March 2025
71AQI
4th March 2025
75AQI
5th March 2025
114AQI
6th March 2025
93AQI
7th March 2025
70AQI
8th March 2025
66AQI
9th March 2025
91AQI
10th March 2025
109AQI
11th March 2025
61AQI
12th March 2025
36AQI
13th March 2025
31AQI
14th March 2025
27AQI
15th March 2025
31AQI
16th March 2025
28AQI
17th March 2025
28AQI
18th March 2025
37AQI
19th March 2025
53AQI
20th March 2025
68AQI
21st March 2025
73AQI
22nd March 2025
58AQI
23rd March 2025
53AQI
24th March 2025
80AQI
25th March 2025
77AQI
26th March 2025
41AQI
27th March 2025
56AQI
28th March 2025
56AQI
29th March 2025
39AQI
30th March 2025
48AQI
31st March 2025
37AQI
1st April 2025
34AQI
2nd April 2025
38AQI
3rd April 2025
50AQI
4th April 2025
51AQI
5th April 2025
35AQI
6th April 2025
23AQI
7th April 2025
27AQI
8th April 2025
26AQI
9th April 2025
31AQI
10th April 2025
33AQI
11th April 2025
48AQI
12th April 2025
57AQI
13th April 2025
49AQI
14th April 2025
41AQI
15th April 2025
50AQI
16th April 2025
36AQI
17th April 2025
37AQI
18th April 2025
29AQI
19th April 2025
24AQI
20th April 2025
26AQI
21st April 2025
34AQI
22nd April 2025
50AQI
23rd April 2025
53AQI
24th April 2025
45AQI
25th April 2025
33AQI
26th April 2025
44AQI
27th April 2025
43AQI
28th April 2025
45AQI
29th April 2025
46AQI
30th April 2025
38AQI
1st May 2025
49AQI
2nd May 2025
66AQI
3rd May 2025
26AQI
4th May 2025
24AQI
5th May 2025
22AQI
6th May 2025
21AQI
7th May 2025
27AQI
8th May 2025
27AQI
9th May 2025
25AQI
10th May 2025
27AQI
11th May 2025
27AQI
12th May 2025
25AQI
13th May 2025
28AQI
14th May 2025
31AQI
15th May 2025
33AQI
16th May 2025
33AQI
17th May 2025
31AQI
18th May 2025
36AQI
19th May 2025
31AQI
20th May 2025
32AQI
21st May 2025
34AQI
22nd May 2025
28AQI
23rd May 2025
20AQI
24th May 2025
30AQI
25th May 2025
26AQI
26th May 2025
26AQI
27th May 2025
24AQI
28th May 2025
21AQI
29th May 2025
31AQI
30th May 2025
25AQI
31st May 2025
28AQI
1st June 2025
29AQI
2nd June 2025
26AQI
3rd June 2025
27AQI
4th June 2025
22AQI
5th June 2025
19AQI
6th June 2025
19AQI
7th June 2025
18AQI
8th June 2025
19AQI
9th June 2025
37AQI
10th June 2025
48AQI
11th June 2025
34AQI
12th June 2025
39AQI
13th June 2025
54AQI
14th June 2025
48AQI
15th June 2025
35AQI
16th June 2025
33AQI
17th June 2025
35AQI
18th June 2025
35AQI
19th June 2025
31AQI
20th June 2025
26AQI
21st June 2025
32AQI
22nd June 2025
33AQI
23rd June 2025
26AQI
24th June 2025
29AQI
25th June 2025
25AQI
26th June 2025
27AQI
27th June 2025
25AQI
28th June 2025
21AQI
29th June 2025
21AQI
30th June 2025
27AQI
1st July 2025
31AQI
2nd July 2025
52AQI
3rd July 2025
25AQI
4th July 2025
22AQI
5th July 2025
22AQI
6th July 2025
21AQI
7th July 2025
18AQI
8th July 2025
21AQI
9th July 2025
22AQI
10th July 2025
26AQI
11th July 2025
22AQI
12th July 2025
20AQI
13th July 2025
27AQI
14th July 2025
27AQI
15th July 2025
26AQI
16th July 2025
24AQI
17th July 2025
22AQI
18th July 2025
23AQI
19th July 2025
36AQI
20th July 2025
41AQI
21st July 2025
25AQI
22nd July 2025
21AQI
23rd July 2025
19AQI
24th July 2025
24AQI
25th July 2025
21AQI
26th July 2025
34AQI
27th July 2025
22AQI
28th July 2025
25AQI
29th July 2025
20AQI
30th July 2025
20AQI
31st July 2025
20AQI
1st August 2025
19AQI

46AQI

61AQI

58AQI

39AQI

29AQI

30AQI

25AQI

19AQI

No. of days

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

202541AQI

22
8
1
10
17
1
12
17
2
27
3
30
1
29
1
30
1
1
161
48
4

Highest AQI recorded in

February

61AQI

Lowest AQI recorded in

August

19AQI

202436AQI

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 recorded in

March

42AQI

Lowest AQI recorded in

July

29AQI

202334AQI

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 recorded in

February

47AQI

Lowest AQI recorded in

August

23AQI

202239AQI

24
7
21
13
17
1
29
1
29
2
29
1
22
2
1
27
1
31
26
4
19
12
271
47
1

Highest AQI recorded in

March

58AQI

Lowest AQI recorded in

August

28AQI

202134AQI

29
1
20
8
22
9
28
2
31
22
8
28
3
31
25
5
31
30
28
3
325
39

Highest AQI recorded in

March

44AQI

Lowest AQI recorded in

November

20AQI

202035AQI

9
4
16
5
18
28
2
30
1
21
10
26
4
31
21
9
27
4
227
39

Highest AQI recorded in

November

41AQI

Lowest AQI recorded in

July

26AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
41AQI
Least Polluted Year Recorded
2023(Avg.)
34AQI

Haarlem's annual 2025 AQI (41) shows an average percentage change of 15.5% (worsened AQI) compared to previous years: 2020 (35), 2021 (34), 2022 (39), 2023 (34), 2024 (36).