Country Background

West, 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

West, Haarlem, Noord Holland, Netherlands

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
28th Aug 2024
57AQI
Lowest AQI recorded on
3rd Aug 2023
11AQI


Same Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 26 of Good air quality, showing improvement over 2024 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 6th Aug - 7th Aug 2025

West, Haarlem, Noord Holland, Netherlands

AQI
Day
Night
.

5 AM6th Aug 2025

9 PM

4 AM7th Aug 2025

Day time
Avg. Highest Time
11AM6th Aug

33AQI

Avg. Lowest Time
8AM6th Aug

23AQI

Night time
Avg. Highest Time
5AM6th Aug

28AQI

Avg. Lowest Time
1AM7th Aug

24AQI

In the last 24 hours,

West's AQI reached its highest point of 33 at 11 AM during the Day, while the lowest point, 23, was recorded at 8 AM during the Day between 6th Aug and 7th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

West, 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 - 07th07th
Day
Night
8th Jul 2025195 AMAQI
8th Jul 2025236 AMAQI
8th Jul 2025187 AMAQI
8th Jul 2025248 AMAQI
8th Jul 2025249 AMAQI
8th Jul 20252110 AMAQI
8th Jul 20252211 AMAQI
8th Jul 20252812 PMAQI
8th Jul 2025311 PMAQI
8th Jul 2025252 PMAQI
8th Jul 2025213 PMAQI
8th Jul 2025184 PMAQI
8th Jul 2025185 PMAQI
8th Jul 2025186 PMAQI
8th Jul 2025207 PMAQI
8th Jul 2025218 PMAQI
8th Jul 2025209 PMAQI
8th Jul 20252010 PMAQI
8th Jul 20252011 PMAQI
9th Jul 20252212 AMAQI
9th Jul 2025211 AMAQI
9th Jul 2025222 AMAQI
9th Jul 2025223 AMAQI
9th Jul 2025204 AMAQI

15°C14/17°C

9th Jul 2025225 AMAQI
9th Jul 2025206 AMAQI
9th Jul 2025187 AMAQI
9th Jul 2025208 AMAQI
9th Jul 2025269 AMAQI
9th Jul 20252810 AMAQI
9th Jul 20252911 AMAQI
9th Jul 20252812 PMAQI
9th Jul 2025241 PMAQI
9th Jul 2025202 PMAQI
9th Jul 2025193 PMAQI
9th Jul 2025204 PMAQI
9th Jul 2025205 PMAQI
9th Jul 2025226 PMAQI
9th Jul 2025237 PMAQI
9th Jul 2025208 PMAQI
9th Jul 2025219 PMAQI
9th Jul 20252210 PMAQI
9th Jul 20252211 PMAQI
10th Jul 20252212 AMAQI
10th Jul 2025221 AMAQI
10th Jul 2025252 AMAQI
10th Jul 2025273 AMAQI
10th Jul 2025274 AMAQI

17°C15/18°C

10th Jul 2025265 AMAQI
10th Jul 2025286 AMAQI
10th Jul 2025327 AMAQI
10th Jul 2025328 AMAQI
10th Jul 2025329 AMAQI
10th Jul 20254310 AMAQI
10th Jul 20254011 AMAQI
10th Jul 20253412 PMAQI
10th Jul 2025301 PMAQI
10th Jul 2025242 PMAQI
10th Jul 2025223 PMAQI
10th Jul 2025214 PMAQI
10th Jul 2025205 PMAQI
10th Jul 2025206 PMAQI
10th Jul 2025207 PMAQI
10th Jul 2025248 PMAQI
10th Jul 2025269 PMAQI
10th Jul 20252610 PMAQI
10th Jul 20252611 PMAQI
11th Jul 20252612 AMAQI
11th Jul 2025271 AMAQI
11th Jul 2025222 AMAQI
11th Jul 2025193 AMAQI
11th Jul 2025224 AMAQI

18°C16/19°C

11th Jul 2025225 AMAQI
11th Jul 2025226 AMAQI
11th Jul 2025227 AMAQI
11th Jul 2025248 AMAQI
11th Jul 2025229 AMAQI
11th Jul 20252010 AMAQI
11th Jul 20251811 AMAQI
11th Jul 20251912 PMAQI
11th Jul 2025171 PMAQI
11th Jul 2025192 PMAQI
11th Jul 2025203 PMAQI
11th Jul 2025194 PMAQI
11th Jul 2025195 PMAQI
11th Jul 2025186 PMAQI
11th Jul 2025197 PMAQI
11th Jul 2025198 PMAQI
11th Jul 2025219 PMAQI
11th Jul 20252310 PMAQI
11th Jul 20252211 PMAQI
12th Jul 20252412 AMAQI
12th Jul 2025221 AMAQI
12th Jul 2025212 AMAQI
12th Jul 2025173 AMAQI
12th Jul 2025184 AMAQI

18°C16/20°C

12th Jul 2025175 AMAQI
12th Jul 2025226 AMAQI
12th Jul 2025177 AMAQI
12th Jul 2025178 AMAQI
12th Jul 2025229 AMAQI
12th Jul 20251810 AMAQI
12th Jul 20251811 AMAQI
12th Jul 20251612 PMAQI
12th Jul 2025171 PMAQI
12th Jul 2025192 PMAQI
12th Jul 2025203 PMAQI
12th Jul 2025204 PMAQI
12th Jul 2025215 PMAQI
12th Jul 2025206 PMAQI
12th Jul 2025207 PMAQI
12th Jul 2025208 PMAQI
12th Jul 2025209 PMAQI
12th Jul 20252110 PMAQI
12th Jul 20252211 PMAQI
13th Jul 20252112 AMAQI
13th Jul 2025211 AMAQI
13th Jul 2025222 AMAQI
13th Jul 2025213 AMAQI
13th Jul 2025234 AMAQI

18°C16/20°C

13th Jul 2025245 AMAQI
13th Jul 2025246 AMAQI
13th Jul 2025257 AMAQI
13th Jul 2025248 AMAQI
13th Jul 2025269 AMAQI
13th Jul 20252810 AMAQI
13th Jul 20252811 AMAQI
13th Jul 20252812 PMAQI
13th Jul 2025261 PMAQI
13th Jul 2025262 PMAQI
13th Jul 2025243 PMAQI
13th Jul 2025234 PMAQI
13th Jul 2025245 PMAQI
13th Jul 2025236 PMAQI
13th Jul 2025227 PMAQI
13th Jul 2025198 PMAQI
13th Jul 2025229 PMAQI
13th Jul 20252510 PMAQI
13th Jul 20252611 PMAQI
14th Jul 20252612 AMAQI
14th Jul 2025261 AMAQI
14th Jul 2025252 AMAQI
14th Jul 2025263 AMAQI
14th Jul 2025254 AMAQI

19°C17/20°C

14th Jul 2025225 AMAQI
14th Jul 2025266 AMAQI
14th Jul 2025267 AMAQI
14th Jul 2025258 AMAQI
14th Jul 2025239 AMAQI
14th Jul 20252010 AMAQI
14th Jul 20252411 AMAQI
14th Jul 20252612 PMAQI
14th Jul 2025281 PMAQI
14th Jul 2025272 PMAQI
14th Jul 2025263 PMAQI
14th Jul 2025294 PMAQI
14th Jul 2025365 PMAQI
14th Jul 2025366 PMAQI
14th Jul 2025347 PMAQI
14th Jul 2025328 PMAQI
14th Jul 2025309 PMAQI
14th Jul 20252710 PMAQI
14th Jul 20252811 PMAQI
15th Jul 20252712 AMAQI
15th Jul 2025261 AMAQI
15th Jul 2025242 AMAQI
15th Jul 2025223 AMAQI
15th Jul 2025224 AMAQI

19°C17/21°C

15th Jul 2025295 AMAQI
15th Jul 2025386 AMAQI
15th Jul 2025327 AMAQI
15th Jul 2025308 AMAQI
15th Jul 2025259 AMAQI
15th Jul 20251810 AMAQI
15th Jul 20251611 AMAQI
15th Jul 20251812 PMAQI
15th Jul 2025211 PMAQI
15th Jul 2025242 PMAQI
15th Jul 2025283 PMAQI
15th Jul 2025264 PMAQI
15th Jul 2025255 PMAQI
15th Jul 2025256 PMAQI
15th Jul 2025287 PMAQI
15th Jul 2025278 PMAQI
15th Jul 2025269 PMAQI
15th Jul 20252710 PMAQI
15th Jul 20252711 PMAQI
16th Jul 20252812 AMAQI
16th Jul 2025271 AMAQI
16th Jul 2025292 AMAQI
16th Jul 2025343 AMAQI
16th Jul 2025414 AMAQI

19°C18/19°C

16th Jul 2025245 AMAQI
16th Jul 2025176 AMAQI
16th Jul 2025207 AMAQI
16th Jul 2025188 AMAQI
16th Jul 2025229 AMAQI
16th Jul 20251910 AMAQI
16th Jul 20251911 AMAQI
16th Jul 20252212 PMAQI
16th Jul 2025211 PMAQI
16th Jul 2025232 PMAQI
16th Jul 2025243 PMAQI
16th Jul 2025244 PMAQI
16th Jul 2025205 PMAQI
16th Jul 2025226 PMAQI
16th Jul 2025227 PMAQI
16th Jul 2025228 PMAQI
16th Jul 2025229 PMAQI
16th Jul 20252510 PMAQI
16th Jul 20252511 PMAQI
17th Jul 20252512 AMAQI
17th Jul 2025251 AMAQI
17th Jul 2025202 AMAQI
17th Jul 2025173 AMAQI
17th Jul 2025164 AMAQI

17°C15/18°C

17th Jul 2025155 AMAQI
17th Jul 2025186 AMAQI
17th Jul 2025187 AMAQI
17th Jul 2025188 AMAQI
17th Jul 2025189 AMAQI
17th Jul 20251710 AMAQI
17th Jul 20251811 AMAQI
17th Jul 20252212 PMAQI
17th Jul 2025241 PMAQI
17th Jul 2025222 PMAQI
17th Jul 2025223 PMAQI
17th Jul 2025224 PMAQI
17th Jul 2025235 PMAQI
17th Jul 2025226 PMAQI
17th Jul 2025217 PMAQI
17th Jul 2025218 PMAQI
17th Jul 2025219 PMAQI
17th Jul 20252210 PMAQI
17th Jul 20252111 PMAQI
18th Jul 20252212 AMAQI
18th Jul 2025221 AMAQI
18th Jul 2025242 AMAQI
18th Jul 2025243 AMAQI
18th Jul 2025234 AMAQI

18°C17/19°C

18th Jul 2025195 AMAQI
18th Jul 2025196 AMAQI
18th Jul 2025197 AMAQI
18th Jul 2025178 AMAQI
18th Jul 2025239 AMAQI
18th Jul 20252610 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025241 PMAQI
18th Jul 2025222 PMAQI
18th Jul 2025243 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025246 PMAQI
18th Jul 2025237 PMAQI
18th Jul 2025218 PMAQI
18th Jul 2025209 PMAQI
18th Jul 20252310 PMAQI
18th Jul 20252411 PMAQI
19th Jul 20252312 AMAQI
19th Jul 2025231 AMAQI
19th Jul 2025362 AMAQI
19th Jul 2025393 AMAQI
19th Jul 2025324 AMAQI

19°C16/22°C

19th Jul 2025325 AMAQI
19th Jul 2025376 AMAQI
19th Jul 2025397 AMAQI
19th Jul 2025408 AMAQI
19th Jul 2025399 AMAQI
19th Jul 20254310 AMAQI
19th Jul 20254211 AMAQI
19th Jul 20253612 PMAQI
19th Jul 2025331 PMAQI
19th Jul 2025332 PMAQI
19th Jul 2025343 PMAQI
19th Jul 2025364 PMAQI
19th Jul 2025355 PMAQI
19th Jul 2025326 PMAQI
19th Jul 2025357 PMAQI
19th Jul 2025368 PMAQI
19th Jul 2025369 PMAQI
19th Jul 20253510 PMAQI
19th Jul 20253511 PMAQI
20th Jul 20253412 AMAQI
20th Jul 2025351 AMAQI
20th Jul 2025492 AMAQI
20th Jul 2025593 AMAQI
20th Jul 2025524 AMAQI

22°C18/27°C

20th Jul 2025315 AMAQI
20th Jul 2025266 AMAQI
20th Jul 2025307 AMAQI
20th Jul 2025398 AMAQI
20th Jul 2025389 AMAQI
20th Jul 20254310 AMAQI
20th Jul 20255111 AMAQI
20th Jul 20254312 PMAQI
20th Jul 2025401 PMAQI
20th Jul 2025412 PMAQI
20th Jul 2025403 PMAQI
20th Jul 2025384 PMAQI
20th Jul 2025375 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025347 PMAQI
20th Jul 2025348 PMAQI
20th Jul 2025409 PMAQI
20th Jul 20254210 PMAQI
20th Jul 20254211 PMAQI
21st Jul 20254212 AMAQI
21st Jul 2025421 AMAQI
21st Jul 2025272 AMAQI
21st Jul 2025193 AMAQI
21st Jul 2025184 AMAQI

19°C17/22°C

21st Jul 2025215 AMAQI
21st Jul 2025176 AMAQI
21st Jul 2025167 AMAQI
21st Jul 2025188 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20252010 AMAQI
21st Jul 20252111 AMAQI
21st Jul 20252012 PMAQI
21st Jul 2025211 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025235 PMAQI
21st Jul 2025206 PMAQI
21st Jul 2025197 PMAQI
21st Jul 2025208 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252310 PMAQI
21st Jul 20252411 PMAQI
22nd Jul 20252312 AMAQI
22nd Jul 2025241 AMAQI
22nd Jul 2025172 AMAQI
22nd Jul 2025183 AMAQI
22nd Jul 2025184 AMAQI

19°C17/21°C

22nd Jul 2025185 AMAQI
22nd Jul 2025176 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025188 AMAQI
22nd Jul 2025209 AMAQI
22nd Jul 20251910 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20252212 PMAQI
22nd Jul 2025221 PMAQI
22nd Jul 2025182 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025204 PMAQI
22nd Jul 2025245 PMAQI
22nd Jul 2025246 PMAQI
22nd Jul 2025237 PMAQI
22nd Jul 2025208 PMAQI
22nd Jul 2025209 PMAQI
22nd Jul 20252010 PMAQI
22nd Jul 20252011 PMAQI
23rd Jul 20251812 AMAQI
23rd Jul 2025191 AMAQI
23rd Jul 2025172 AMAQI
23rd Jul 2025143 AMAQI
23rd Jul 2025164 AMAQI

18°C18/19°C

23rd Jul 2025175 AMAQI
23rd Jul 2025176 AMAQI
23rd Jul 2025187 AMAQI
23rd Jul 2025218 AMAQI
23rd Jul 2025209 AMAQI
23rd Jul 20251810 AMAQI
23rd Jul 20251711 AMAQI
23rd Jul 20251612 PMAQI
23rd Jul 2025171 PMAQI
23rd Jul 2025172 PMAQI
23rd Jul 2025173 PMAQI
23rd Jul 2025174 PMAQI
23rd Jul 2025175 PMAQI
23rd Jul 2025176 PMAQI
23rd Jul 2025187 PMAQI
23rd Jul 2025188 PMAQI
23rd Jul 2025199 PMAQI
23rd Jul 20251810 PMAQI
23rd Jul 20251811 PMAQI
24th Jul 20252012 AMAQI
24th Jul 2025161 AMAQI
24th Jul 2025262 AMAQI
24th Jul 2025313 AMAQI
24th Jul 2025344 AMAQI

19°C18/19°C

24th Jul 2025325 AMAQI
24th Jul 2025276 AMAQI
24th Jul 2025247 AMAQI
24th Jul 2025248 AMAQI
24th Jul 2025269 AMAQI
24th Jul 20252110 AMAQI
24th Jul 20251911 AMAQI
24th Jul 20252212 PMAQI
24th Jul 2025191 PMAQI
24th Jul 2025222 PMAQI
24th Jul 2025263 PMAQI
24th Jul 2025264 PMAQI
24th Jul 2025275 PMAQI
24th Jul 2025276 PMAQI
24th Jul 2025267 PMAQI
24th Jul 2025248 PMAQI
24th Jul 2025269 PMAQI
24th Jul 20252510 PMAQI
24th Jul 20252411 PMAQI
25th Jul 20252512 AMAQI
25th Jul 2025261 AMAQI
25th Jul 2025202 AMAQI
25th Jul 2025223 AMAQI
25th Jul 2025224 AMAQI

19°C17/20°C

25th Jul 2025205 AMAQI
25th Jul 2025196 AMAQI
25th Jul 2025197 AMAQI
25th Jul 2025188 AMAQI
25th Jul 2025189 AMAQI
25th Jul 20252010 AMAQI
25th Jul 20251811 AMAQI
25th Jul 20251812 PMAQI
25th Jul 2025181 PMAQI
25th Jul 2025192 PMAQI
25th Jul 2025193 PMAQI
25th Jul 2025204 PMAQI
25th Jul 2025185 PMAQI
25th Jul 2025206 PMAQI
25th Jul 2025207 PMAQI
25th Jul 2025228 PMAQI
25th Jul 2025239 PMAQI
25th Jul 20252210 PMAQI
25th Jul 20252211 PMAQI
26th Jul 20252112 AMAQI
26th Jul 2025211 AMAQI
26th Jul 2025212 AMAQI
26th Jul 2025223 AMAQI
26th Jul 2025214 AMAQI

19°C18/20°C

26th Jul 2025195 AMAQI
26th Jul 2025226 AMAQI
26th Jul 2025247 AMAQI
26th Jul 2025338 AMAQI
26th Jul 2025399 AMAQI
26th Jul 20254010 AMAQI
26th Jul 20254711 AMAQI
26th Jul 20254812 PMAQI
26th Jul 2025441 PMAQI
26th Jul 2025382 PMAQI
26th Jul 2025423 PMAQI
26th Jul 2025394 PMAQI
26th Jul 2025405 PMAQI
26th Jul 2025426 PMAQI
26th Jul 2025507 PMAQI
26th Jul 2025448 PMAQI
26th Jul 2025379 PMAQI
26th Jul 20253310 PMAQI
26th Jul 20253211 PMAQI
27th Jul 20253112 AMAQI
27th Jul 2025281 AMAQI
27th Jul 2025282 AMAQI
27th Jul 2025183 AMAQI
27th Jul 2025174 AMAQI

19°C18/21°C

27th Jul 2025155 AMAQI
27th Jul 2025156 AMAQI
27th Jul 2025147 AMAQI
27th Jul 2025188 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252310 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20251912 PMAQI
27th Jul 2025211 PMAQI
27th Jul 2025222 PMAQI
27th Jul 2025213 PMAQI
27th Jul 2025204 PMAQI
27th Jul 2025205 PMAQI
27th Jul 2025216 PMAQI
27th Jul 2025237 PMAQI
27th Jul 2025248 PMAQI
27th Jul 2025249 PMAQI
27th Jul 20252210 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025221 AMAQI
28th Jul 2025302 AMAQI
28th Jul 2025313 AMAQI
28th Jul 2025344 AMAQI

18°C17/19°C

28th Jul 2025325 AMAQI
28th Jul 2025316 AMAQI
28th Jul 2025317 AMAQI
28th Jul 2025318 AMAQI
28th Jul 2025319 AMAQI
28th Jul 20253010 AMAQI
28th Jul 20252911 AMAQI
28th Jul 20252612 PMAQI
28th Jul 2025231 PMAQI
28th Jul 2025262 PMAQI
28th Jul 2025263 PMAQI
28th Jul 2025254 PMAQI
28th Jul 2025235 PMAQI
28th Jul 2025226 PMAQI
28th Jul 2025237 PMAQI
28th Jul 2025238 PMAQI
28th Jul 2025259 PMAQI
28th Jul 20252810 PMAQI
28th Jul 20252711 PMAQI
29th Jul 20252712 AMAQI
29th Jul 2025281 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025223 AMAQI
29th Jul 2025194 AMAQI

18°C17/19°C

29th Jul 2025205 AMAQI
29th Jul 2025186 AMAQI
29th Jul 2025167 AMAQI
29th Jul 2025168 AMAQI
29th Jul 2025179 AMAQI
29th Jul 20251710 AMAQI
29th Jul 20251711 AMAQI
29th Jul 20251612 PMAQI
29th Jul 2025171 PMAQI
29th Jul 2025182 PMAQI
29th Jul 2025193 PMAQI
29th Jul 2025204 PMAQI
29th Jul 2025205 PMAQI
29th Jul 2025196 PMAQI
29th Jul 2025197 PMAQI
29th Jul 2025208 PMAQI
29th Jul 2025219 PMAQI
29th Jul 20252110 PMAQI
29th Jul 20252111 PMAQI
30th Jul 20252112 AMAQI
30th Jul 2025211 AMAQI
30th Jul 2025162 AMAQI
30th Jul 2025163 AMAQI
30th Jul 2025224 AMAQI

18°C16/19°C

30th Jul 2025245 AMAQI
30th Jul 2025216 AMAQI
30th Jul 2025227 AMAQI
30th Jul 2025188 AMAQI
30th Jul 2025159 AMAQI
30th Jul 20251510 AMAQI
30th Jul 20252111 AMAQI
30th Jul 20251612 PMAQI
30th Jul 2025181 PMAQI
30th Jul 2025202 PMAQI
30th Jul 2025203 PMAQI
30th Jul 2025214 PMAQI
30th Jul 2025205 PMAQI
30th Jul 2025216 PMAQI
30th Jul 2025227 PMAQI
30th Jul 2025218 PMAQI
30th Jul 2025209 PMAQI
30th Jul 20252010 PMAQI
30th Jul 20252011 PMAQI
31st Jul 20252012 AMAQI
31st Jul 2025201 AMAQI
31st Jul 2025202 AMAQI
31st Jul 2025203 AMAQI
31st Jul 2025254 AMAQI

17°C16/18°C

31st Jul 2025255 AMAQI
31st Jul 2025246 AMAQI
31st Jul 2025207 AMAQI
31st Jul 2025218 AMAQI
31st Jul 2025229 AMAQI
31st Jul 20252010 AMAQI
31st Jul 20251611 AMAQI
31st Jul 20251612 PMAQI
31st Jul 2025201 PMAQI
31st Jul 2025212 PMAQI
31st Jul 2025193 PMAQI
31st Jul 2025224 PMAQI
31st Jul 2025175 PMAQI
31st Jul 2025186 PMAQI
31st Jul 2025167 PMAQI
31st Jul 2025188 PMAQI
31st Jul 2025219 PMAQI
31st Jul 20252210 PMAQI
31st Jul 20252011 PMAQI
1st Aug 20252112 AMAQI
1st Aug 2025211 AMAQI
1st Aug 2025192 AMAQI
1st Aug 2025193 AMAQI
1st Aug 2025204 AMAQI

18°C17/19°C

1st Aug 2025205 AMAQI
1st Aug 2025186 AMAQI
1st Aug 2025207 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025229 AMAQI
1st Aug 20251810 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20251612 PMAQI
1st Aug 2025181 PMAQI
1st Aug 2025182 PMAQI
1st Aug 2025223 PMAQI
1st Aug 2025194 PMAQI
1st Aug 2025205 PMAQI
1st Aug 2025186 PMAQI
1st Aug 2025197 PMAQI
1st Aug 2025178 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 2025183 AMAQI
2nd Aug 2025184 AMAQI

17°C17/18°C

2nd Aug 2025185 AMAQI
2nd Aug 2025186 AMAQI
2nd Aug 2025207 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025199 AMAQI
2nd Aug 20252010 AMAQI
2nd Aug 20251711 AMAQI
2nd Aug 20252012 PMAQI
2nd Aug 2025201 PMAQI
2nd Aug 2025192 PMAQI
2nd Aug 2025183 PMAQI
2nd Aug 2025204 PMAQI
2nd Aug 2025205 PMAQI
2nd Aug 2025196 PMAQI
2nd Aug 2025197 PMAQI
2nd Aug 2025188 PMAQI
2nd Aug 2025209 PMAQI
2nd Aug 20252110 PMAQI
2nd Aug 20252011 PMAQI
3rd Aug 20252112 AMAQI
3rd Aug 2025191 AMAQI
3rd Aug 2025192 AMAQI
3rd Aug 2025203 AMAQI
3rd Aug 2025174 AMAQI

17°C17/18°C

3rd Aug 2025205 AMAQI
3rd Aug 2025186 AMAQI
3rd Aug 2025187 AMAQI
3rd Aug 2025198 AMAQI
3rd Aug 2025219 AMAQI
3rd Aug 20252210 AMAQI
3rd Aug 20252111 AMAQI
3rd Aug 20252112 PMAQI
3rd Aug 2025201 PMAQI
3rd Aug 2025192 PMAQI
3rd Aug 2025203 PMAQI
3rd Aug 2025214 PMAQI
3rd Aug 2025215 PMAQI
3rd Aug 2025206 PMAQI
3rd Aug 2025197 PMAQI
3rd Aug 2025238 PMAQI
3rd Aug 2025219 PMAQI
3rd Aug 20252210 PMAQI
3rd Aug 20252211 PMAQI
4th Aug 20252112 AMAQI
4th Aug 2025221 AMAQI
4th Aug 2025192 AMAQI
4th Aug 2025303 AMAQI
4th Aug 2025174 AMAQI

18°C17/19°C

4th Aug 2025205 AMAQI
4th Aug 2025196 AMAQI
4th Aug 2025227 AMAQI
4th Aug 2025228 AMAQI
4th Aug 2025259 AMAQI
4th Aug 20252110 AMAQI
4th Aug 20252211 AMAQI
4th Aug 20252112 PMAQI
4th Aug 2025221 PMAQI
4th Aug 2025212 PMAQI
4th Aug 2025213 PMAQI
4th Aug 2025244 PMAQI
4th Aug 2025225 PMAQI
4th Aug 2025226 PMAQI
4th Aug 2025227 PMAQI
4th Aug 2025298 PMAQI
4th Aug 2025229 PMAQI
4th Aug 20252310 PMAQI
4th Aug 20252311 PMAQI
5th Aug 20252312 AMAQI
5th Aug 2025231 AMAQI
5th Aug 2025212 AMAQI
5th Aug 2025183 AMAQI
5th Aug 2025184 AMAQI

19°C18/20°C

5th Aug 2025195 AMAQI
5th Aug 2025186 AMAQI
5th Aug 2025227 AMAQI
5th Aug 2025228 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20253110 AMAQI
5th Aug 20253311 AMAQI
5th Aug 20252912 PMAQI
5th Aug 2025281 PMAQI
5th Aug 2025222 PMAQI
5th Aug 2025223 PMAQI
5th Aug 2025214 PMAQI
5th Aug 2025225 PMAQI
5th Aug 2025226 PMAQI
5th Aug 2025227 PMAQI
5th Aug 2025228 PMAQI
5th Aug 2025239 PMAQI
5th Aug 20252310 PMAQI
5th Aug 20252411 PMAQI
6th Aug 20252312 AMAQI
6th Aug 2025241 AMAQI
6th Aug 2025222 AMAQI
6th Aug 2025243 AMAQI
6th Aug 2025234 AMAQI

17°C17/18°C

6th Aug 2025285 AMAQI
6th Aug 2025236 AMAQI
6th Aug 2025247 AMAQI
6th Aug 2025238 AMAQI
6th Aug 2025319 AMAQI
6th Aug 20253110 AMAQI
6th Aug 20253311 AMAQI
6th Aug 20253312 PMAQI
6th Aug 2025271 PMAQI
6th Aug 2025302 PMAQI
6th Aug 2025303 PMAQI
6th Aug 2025274 PMAQI
6th Aug 2025325 PMAQI
6th Aug 2025246 PMAQI
6th Aug 2025287 PMAQI
6th Aug 2025268 PMAQI
6th Aug 2025249 PMAQI
6th Aug 20252410 PMAQI
6th Aug 20252411 PMAQI
7th Aug 20252512 AMAQI
7th Aug 2025241 AMAQI
7th Aug 2025262 AMAQI
7th Aug 2025273 AMAQI
7th Aug 2025264 AMAQI

17°C17/18°C

7th Aug 2025265 AMAQI
5 AM
7th Aug 2025336 AMAQI
7th Aug 2025297 AMAQI
1 PM
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

West, Haarlem, Noord Holland, Netherlands

2025

71%

155

26%

56

3%

7

Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)

Good
155 Days
Moderate
56 Days
Poor
7 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 71%

Health Risk Level:

Low

In 2025, 71% of 219 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

West, 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
52AQI
2nd January 2025
32AQI
3rd January 2025
34AQI
4th January 2025
41AQI
5th January 2025
44AQI
6th January 2025
31AQI
7th January 2025
34AQI
8th January 2025
33AQI
9th January 2025
39AQI
10th January 2025
35AQI
11th January 2025
39AQI
12th January 2025
33AQI
13th January 2025
54AQI
14th January 2025
77AQI
15th January 2025
50AQI
16th January 2025
60AQI
17th January 2025
68AQI
18th January 2025
58AQI
19th January 2025
94AQI
20th January 2025
122AQI
21st January 2025
88AQI
22nd January 2025
76AQI
23rd January 2025
54AQI
24th January 2025
44AQI
25th January 2025
46AQI
26th January 2025
46AQI
27th January 2025
30AQI
28th January 2025
30AQI
29th January 2025
32AQI
30th January 2025
32AQI
31st January 2025
40AQI
1st February 2025
45AQI
2nd February 2025
50AQI
3rd February 2025
54AQI
4th February 2025
78AQI
5th February 2025
59AQI
6th February 2025
41AQI
7th February 2025
48AQI
8th February 2025
75AQI
9th February 2025
102AQI
10th February 2025
109AQI
11th February 2025
94AQI
12th February 2025
88AQI
13th February 2025
105AQI
14th February 2025
65AQI
15th February 2025
63AQI
16th February 2025
73AQI
17th February 2025
58AQI
18th February 2025
68AQI
19th February 2025
70AQI
20th February 2025
82AQI
21st February 2025
57AQI
22nd February 2025
56AQI
23rd February 2025
55AQI
24th February 2025
45AQI
25th February 2025
55AQI
26th February 2025
39AQI
27th February 2025
33AQI
28th February 2025
38AQI
1st March 2025
33AQI
2nd March 2025
61AQI
3rd March 2025
82AQI
4th March 2025
82AQI
5th March 2025
125AQI
6th March 2025
102AQI
7th March 2025
77AQI
8th March 2025
72AQI
9th March 2025
95AQI
10th March 2025
115AQI
11th March 2025
61AQI
12th March 2025
36AQI
13th March 2025
31AQI
14th March 2025
26AQI
15th March 2025
35AQI
16th March 2025
32AQI
17th March 2025
29AQI
18th March 2025
43AQI
19th March 2025
57AQI
20th March 2025
72AQI
21st March 2025
77AQI
22nd March 2025
58AQI
23rd March 2025
55AQI
24th March 2025
83AQI
25th March 2025
81AQI
26th March 2025
38AQI
27th March 2025
59AQI
28th March 2025
61AQI
29th March 2025
42AQI
30th March 2025
53AQI
31st March 2025
37AQI
1st April 2025
38AQI
2nd April 2025
39AQI
3rd April 2025
51AQI
4th April 2025
52AQI
5th April 2025
37AQI
6th April 2025
25AQI
7th April 2025
34AQI
8th April 2025
31AQI
9th April 2025
34AQI
10th April 2025
37AQI
11th April 2025
55AQI
12th April 2025
61AQI
13th April 2025
54AQI
14th April 2025
47AQI
15th April 2025
53AQI
16th April 2025
42AQI
17th April 2025
38AQI
18th April 2025
29AQI
19th April 2025
26AQI
20th April 2025
25AQI
21st April 2025
37AQI
22nd April 2025
57AQI
23rd April 2025
55AQI
24th April 2025
46AQI
25th April 2025
36AQI
26th April 2025
47AQI
27th April 2025
45AQI
28th April 2025
48AQI
29th April 2025
49AQI
30th April 2025
37AQI
1st May 2025
51AQI
2nd May 2025
66AQI
3rd May 2025
29AQI
4th May 2025
27AQI
5th May 2025
26AQI
6th May 2025
25AQI
7th May 2025
30AQI
8th May 2025
30AQI
9th May 2025
30AQI
10th May 2025
31AQI
11th May 2025
30AQI
12th May 2025
29AQI
13th May 2025
29AQI
14th May 2025
30AQI
15th May 2025
30AQI
16th May 2025
31AQI
17th May 2025
28AQI
18th May 2025
37AQI
19th May 2025
26AQI
20th May 2025
32AQI
21st May 2025
36AQI
22nd May 2025
29AQI
23rd May 2025
20AQI
24th May 2025
33AQI
25th May 2025
31AQI
26th May 2025
30AQI
27th May 2025
26AQI
28th May 2025
20AQI
29th May 2025
33AQI
30th May 2025
27AQI
31st May 2025
29AQI
1st June 2025
31AQI
2nd June 2025
25AQI
3rd June 2025
27AQI
4th June 2025
22AQI
5th June 2025
20AQI
6th June 2025
19AQI
7th June 2025
19AQI
8th June 2025
21AQI
9th June 2025
36AQI
10th June 2025
48AQI
11th June 2025
29AQI
12th June 2025
36AQI
13th June 2025
53AQI
14th June 2025
47AQI
15th June 2025
36AQI
16th June 2025
31AQI
17th June 2025
35AQI
18th June 2025
36AQI
19th June 2025
30AQI
20th June 2025
24AQI
21st June 2025
34AQI
22nd June 2025
37AQI
23rd June 2025
26AQI
24th June 2025
30AQI
25th June 2025
25AQI
26th June 2025
27AQI
27th June 2025
25AQI
28th June 2025
22AQI
29th June 2025
20AQI
30th June 2025
25AQI
1st July 2025
33AQI
2nd July 2025
59AQI
3rd July 2025
25AQI
4th July 2025
24AQI
5th July 2025
23AQI
6th July 2025
21AQI
7th July 2025
17AQI
8th July 2025
21AQI
9th July 2025
22AQI
10th July 2025
27AQI
11th July 2025
21AQI
12th July 2025
20AQI
13th July 2025
24AQI
14th July 2025
27AQI
15th July 2025
26AQI
16th July 2025
24AQI
17th July 2025
20AQI
18th July 2025
23AQI
19th July 2025
35AQI
20th July 2025
40AQI
21st July 2025
23AQI
22nd July 2025
20AQI
23rd July 2025
18AQI
24th July 2025
25AQI
25th July 2025
20AQI
26th July 2025
34AQI
27th July 2025
21AQI
28th July 2025
27AQI
29th July 2025
20AQI
30th July 2025
20AQI
31st July 2025
20AQI
1st August 2025
20AQI
2nd August 2025
19AQI
3rd August 2025
20AQI
4th August 2025
22AQI
5th August 2025
23AQI
6th August 2025
26AQI

50AQI

64AQI

62AQI

42AQI

31AQI

30AQI

25AQI

22AQI


No. of days

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

202543AQI

20
10
1
8
17
3
11
17
3
22
8
29
2
29
1
30
1
6
155
56
7

Highest AQI recorded in

February

64AQI


Lowest AQI recorded in

August

22AQI


202440AQI

24
7
27
2
23
8
23
7
23
8
26
4
30
1
26
5
24
6
28
3
21
9
20
11
295
71

Highest AQI recorded in

December

47AQI


Lowest AQI recorded in

July

33AQI


202338AQI

26
5
14
13
1
27
4
17
12
1
24
7
27
3
30
1
31
24
6
30
1
27
2
22
9
299
63
2

Highest AQI recorded in

February

54AQI


Lowest AQI recorded in

August

23AQI


202243AQI

22
9
20
1
14
15
2
26
4
27
4
26
4
20
4
1
26
2
26
5
24
6
16
14
1
248
68
3

Highest AQI recorded in

March

61AQI


Lowest AQI recorded in

August

29AQI


202137AQI

25
5
18
10
21
10
26
4
30
1
21
9
25
6
30
1
25
5
31
30
27
4
309
55

Highest AQI recorded in

March

47AQI


Lowest AQI recorded in

November

21AQI


202038AQI

8
5
14
7
16
2
27
3
30
1
21
10
24
6
31
19
11
24
7
214
52

Highest AQI recorded in

November

47AQI


Lowest AQI recorded in

July

28AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
43AQI
Least Polluted Year Recorded
2021(Avg.)
37AQI


West's annual 2025 AQI (43) shows an average percentage change of 9.7% (worsened AQI) compared to previous years: 2020 (38), 2021 (37), 2022 (43), 2023 (38), 2024 (40).