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+

September Air Quality Analysis

Haarlem, Noord Holland, Netherlands

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
9th Sep 2023
83AQI
Lowest AQI recorded on
28th Sep 2022
17AQI

Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 25 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 16th Sep - 17th Sep 2025

Haarlem, Noord Holland, Netherlands

AQI
Day
Night
.

6 AM16th Sep 2025

8 PM

5 AM17th Sep 2025

Day time
Avg. Highest Time
7PM16th Sep

28AQI

Avg. Lowest Time
10AM16th Sep

22AQI

Night time
Avg. Highest Time
6AM16th Sep

27AQI

Avg. Lowest Time
4AM17th Sep

22AQI

In the last 24 hours,

Haarlem's AQI reached its highest point of 28 at 7 PM during the Day, while the lowest point, 22, was recorded at 4 AM during the Night between 16th Sep and 17th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025

Haarlem, Noord Holland, Netherlands

AugSep
18th - 19th19th - 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
18th Aug 2025196 AMAQI
18th Aug 2025177 AMAQI
18th Aug 2025178 AMAQI
18th Aug 2025189 AMAQI
18th Aug 20252410 AMAQI
18th Aug 20252611 AMAQI
18th Aug 20252612 PMAQI
18th Aug 2025291 PMAQI
18th Aug 2025242 PMAQI
18th Aug 2025223 PMAQI
18th Aug 2025204 PMAQI
18th Aug 2025215 PMAQI
18th Aug 2025216 PMAQI
18th Aug 2025197 PMAQI
18th Aug 2025208 PMAQI
18th Aug 2025229 PMAQI
18th Aug 20252210 PMAQI
18th Aug 20252311 PMAQI
19th Aug 20252312 AMAQI
19th Aug 2025231 AMAQI
19th Aug 2025202 AMAQI
19th Aug 2025193 AMAQI
19th Aug 2025204 AMAQI
19th Aug 2025195 AMAQI

19°C17/22°C

19th Aug 2025166 AMAQI
19th Aug 2025217 AMAQI
19th Aug 2025278 AMAQI
19th Aug 2025309 AMAQI
19th Aug 20252910 AMAQI
19th Aug 20252411 AMAQI
19th Aug 20252312 PMAQI
19th Aug 2025241 PMAQI
19th Aug 2025222 PMAQI
19th Aug 2025203 PMAQI
19th Aug 2025204 PMAQI
19th Aug 2025215 PMAQI
19th Aug 2025216 PMAQI
19th Aug 2025207 PMAQI
19th Aug 2025208 PMAQI
19th Aug 2025229 PMAQI
19th Aug 20252210 PMAQI
19th Aug 20252211 PMAQI
20th Aug 20252212 AMAQI
20th Aug 2025231 AMAQI
20th Aug 2025202 AMAQI
20th Aug 2025193 AMAQI
20th Aug 2025204 AMAQI
20th Aug 2025205 AMAQI

19°C16/22°C

20th Aug 2025266 AMAQI
20th Aug 2025277 AMAQI
20th Aug 2025248 AMAQI
20th Aug 2025299 AMAQI
20th Aug 20253110 AMAQI
20th Aug 20253311 AMAQI
20th Aug 20253212 PMAQI
20th Aug 2025301 PMAQI
20th Aug 2025242 PMAQI
20th Aug 2025243 PMAQI
20th Aug 2025294 PMAQI
20th Aug 2025275 PMAQI
20th Aug 2025266 PMAQI
20th Aug 2025247 PMAQI
20th Aug 2025228 PMAQI
20th Aug 2025249 PMAQI
20th Aug 20252610 PMAQI
20th Aug 20252611 PMAQI
21st Aug 20252412 AMAQI
21st Aug 2025261 AMAQI
21st Aug 2025172 AMAQI
21st Aug 2025173 AMAQI
21st Aug 2025144 AMAQI
21st Aug 2025155 AMAQI

18°C16/21°C

21st Aug 2025146 AMAQI
21st Aug 2025147 AMAQI
21st Aug 2025138 AMAQI
21st Aug 2025159 AMAQI
21st Aug 20252110 AMAQI
21st Aug 20252111 AMAQI
21st Aug 20252012 PMAQI
21st Aug 2025181 PMAQI
21st Aug 2025182 PMAQI
21st Aug 2025173 PMAQI
21st Aug 2025184 PMAQI
21st Aug 2025185 PMAQI
21st Aug 2025186 PMAQI
21st Aug 2025187 PMAQI
21st Aug 2025178 PMAQI
21st Aug 2025179 PMAQI
21st Aug 20251810 PMAQI
21st Aug 20251811 PMAQI
22nd Aug 20251812 AMAQI
22nd Aug 2025181 AMAQI
22nd Aug 2025172 AMAQI
22nd Aug 2025143 AMAQI
22nd Aug 2025164 AMAQI
22nd Aug 2025165 AMAQI

17°C16/19°C

22nd Aug 2025146 AMAQI
22nd Aug 2025177 AMAQI
22nd Aug 2025168 AMAQI
22nd Aug 2025179 AMAQI
22nd Aug 20251810 AMAQI
22nd Aug 20252111 AMAQI
22nd Aug 20252112 PMAQI
22nd Aug 2025201 PMAQI
22nd Aug 2025192 PMAQI
22nd Aug 2025173 PMAQI
22nd Aug 2025184 PMAQI
22nd Aug 2025185 PMAQI
22nd Aug 2025196 PMAQI
22nd Aug 2025177 PMAQI
22nd Aug 2025178 PMAQI
22nd Aug 2025189 PMAQI
22nd Aug 20251810 PMAQI
22nd Aug 20251811 PMAQI
23rd Aug 20251812 AMAQI
23rd Aug 2025181 AMAQI
23rd Aug 2025202 AMAQI
23rd Aug 2025203 AMAQI
23rd Aug 2025164 AMAQI
23rd Aug 2025165 AMAQI

16°C16/17°C

23rd Aug 2025176 AMAQI
23rd Aug 2025177 AMAQI
23rd Aug 2025178 AMAQI
23rd Aug 2025179 AMAQI
23rd Aug 20251810 AMAQI
23rd Aug 20251911 AMAQI
23rd Aug 20251812 PMAQI
23rd Aug 2025201 PMAQI
23rd Aug 2025202 PMAQI
23rd Aug 2025203 PMAQI
23rd Aug 2025184 PMAQI
23rd Aug 2025165 PMAQI
23rd Aug 2025166 PMAQI
23rd Aug 2025167 PMAQI
23rd Aug 2025168 PMAQI
23rd Aug 2025199 PMAQI
23rd Aug 20251910 PMAQI
23rd Aug 20251911 PMAQI
24th Aug 20251912 AMAQI
24th Aug 2025191 AMAQI
24th Aug 2025172 AMAQI
24th Aug 2025183 AMAQI
24th Aug 2025164 AMAQI
24th Aug 2025175 AMAQI

16°C15/16°C

24th Aug 2025186 AMAQI
24th Aug 2025177 AMAQI
24th Aug 2025218 AMAQI
24th Aug 2025229 AMAQI
24th Aug 20252110 AMAQI
24th Aug 20251711 AMAQI
24th Aug 20251812 PMAQI
24th Aug 2025171 PMAQI
24th Aug 2025202 PMAQI
24th Aug 2025183 PMAQI
24th Aug 2025184 PMAQI
24th Aug 2025185 PMAQI
24th Aug 2025176 PMAQI
24th Aug 2025187 PMAQI
24th Aug 2025178 PMAQI
24th Aug 2025189 PMAQI
24th Aug 20251810 PMAQI
24th Aug 20251911 PMAQI
25th Aug 20252112 AMAQI
25th Aug 2025181 AMAQI
25th Aug 2025152 AMAQI
25th Aug 2025183 AMAQI
25th Aug 2025224 AMAQI
25th Aug 2025205 AMAQI

16°C15/17°C

25th Aug 2025236 AMAQI
25th Aug 2025287 AMAQI
25th Aug 2025228 AMAQI
25th Aug 2025269 AMAQI
25th Aug 20252710 AMAQI
25th Aug 20252911 AMAQI
25th Aug 20252712 PMAQI
25th Aug 2025221 PMAQI
25th Aug 2025222 PMAQI
25th Aug 2025223 PMAQI
25th Aug 2025204 PMAQI
25th Aug 2025205 PMAQI
25th Aug 2025186 PMAQI
25th Aug 2025187 PMAQI
25th Aug 2025188 PMAQI
25th Aug 2025199 PMAQI
25th Aug 20252010 PMAQI
25th Aug 20251911 PMAQI
26th Aug 20252012 AMAQI
26th Aug 2025211 AMAQI
26th Aug 2025242 AMAQI
26th Aug 2025283 AMAQI
26th Aug 2025264 AMAQI
26th Aug 2025315 AMAQI

17°C15/20°C

26th Aug 2025276 AMAQI
26th Aug 2025287 AMAQI
26th Aug 2025298 AMAQI
26th Aug 2025529 AMAQI
26th Aug 20254110 AMAQI
26th Aug 20254111 AMAQI
26th Aug 20253412 PMAQI
26th Aug 2025291 PMAQI
26th Aug 2025272 PMAQI
26th Aug 2025283 PMAQI
26th Aug 2025284 PMAQI
26th Aug 2025275 PMAQI
26th Aug 2025266 PMAQI
26th Aug 2025277 PMAQI
26th Aug 2025268 PMAQI
26th Aug 2025279 PMAQI
26th Aug 20252710 PMAQI
26th Aug 20252711 PMAQI
27th Aug 20252812 AMAQI
27th Aug 2025291 AMAQI
27th Aug 2025262 AMAQI
27th Aug 2025243 AMAQI
27th Aug 2025244 AMAQI
27th Aug 2025295 AMAQI

19°C16/24°C

27th Aug 2025306 AMAQI
27th Aug 2025307 AMAQI
27th Aug 2025278 AMAQI
27th Aug 2025339 AMAQI
27th Aug 20253310 AMAQI
27th Aug 20253511 AMAQI
27th Aug 20253312 PMAQI
27th Aug 2025291 PMAQI
27th Aug 2025262 PMAQI
27th Aug 2025263 PMAQI
27th Aug 2025254 PMAQI
27th Aug 2025275 PMAQI
27th Aug 2025276 PMAQI
27th Aug 2025267 PMAQI
27th Aug 2025278 PMAQI
27th Aug 2025289 PMAQI
27th Aug 20252810 PMAQI
27th Aug 20252811 PMAQI
28th Aug 20252812 AMAQI
28th Aug 2025291 AMAQI
28th Aug 2025302 AMAQI
28th Aug 2025323 AMAQI
28th Aug 2025334 AMAQI
28th Aug 2025315 AMAQI

19°C18/20°C

28th Aug 2025316 AMAQI
28th Aug 2025347 AMAQI
28th Aug 2025358 AMAQI
28th Aug 2025389 AMAQI
28th Aug 20253710 AMAQI
28th Aug 20253811 AMAQI
28th Aug 20253412 PMAQI
28th Aug 2025341 PMAQI
28th Aug 2025292 PMAQI
28th Aug 2025313 PMAQI
28th Aug 2025284 PMAQI
28th Aug 2025255 PMAQI
28th Aug 2025226 PMAQI
28th Aug 2025227 PMAQI
28th Aug 2025238 PMAQI
28th Aug 2025299 PMAQI
28th Aug 20253110 PMAQI
28th Aug 20253111 PMAQI
29th Aug 20253212 AMAQI
29th Aug 2025321 AMAQI
29th Aug 2025212 AMAQI
29th Aug 2025233 AMAQI
29th Aug 2025204 AMAQI
29th Aug 2025205 AMAQI

18°C17/19°C

29th Aug 2025226 AMAQI
29th Aug 2025247 AMAQI
29th Aug 2025268 AMAQI
29th Aug 2025269 AMAQI
29th Aug 20252510 AMAQI
29th Aug 20252211 AMAQI
29th Aug 20252012 PMAQI
29th Aug 2025211 PMAQI
29th Aug 2025222 PMAQI
29th Aug 2025213 PMAQI
29th Aug 2025204 PMAQI
29th Aug 2025205 PMAQI
29th Aug 2025206 PMAQI
29th Aug 2025197 PMAQI
29th Aug 2025198 PMAQI
29th Aug 2025229 PMAQI
29th Aug 20252310 PMAQI
29th Aug 20252411 PMAQI
30th Aug 20252412 AMAQI
30th Aug 2025241 AMAQI
30th Aug 2025182 AMAQI
30th Aug 2025193 AMAQI
30th Aug 2025154 AMAQI
30th Aug 2025155 AMAQI

18°C15/21°C

30th Aug 2025176 AMAQI
30th Aug 2025207 AMAQI
30th Aug 2025188 AMAQI
30th Aug 2025189 AMAQI
30th Aug 20252110 AMAQI
30th Aug 20252311 AMAQI
30th Aug 20252512 PMAQI
30th Aug 2025231 PMAQI
30th Aug 2025212 PMAQI
30th Aug 2025203 PMAQI
30th Aug 2025204 PMAQI
30th Aug 2025205 PMAQI
30th Aug 2025186 PMAQI
30th Aug 2025207 PMAQI
30th Aug 2025188 PMAQI
30th Aug 2025199 PMAQI
30th Aug 20252010 PMAQI
30th Aug 20252011 PMAQI
31st Aug 20252012 AMAQI
31st Aug 2025201 AMAQI
31st Aug 2025192 AMAQI
31st Aug 2025173 AMAQI
31st Aug 2025184 AMAQI
31st Aug 2025165 AMAQI

18°C17/19°C

31st Aug 2025166 AMAQI
31st Aug 2025187 AMAQI
31st Aug 2025188 AMAQI
31st Aug 2025189 AMAQI
31st Aug 20251910 AMAQI
31st Aug 20251811 AMAQI
31st Aug 20251712 PMAQI
31st Aug 2025191 PMAQI
31st Aug 2025182 PMAQI
31st Aug 2025193 PMAQI
31st Aug 2025194 PMAQI
31st Aug 2025185 PMAQI
31st Aug 2025196 PMAQI
31st Aug 2025187 PMAQI
31st Aug 2025188 PMAQI
31st Aug 2025209 PMAQI
31st Aug 20251910 PMAQI
31st Aug 20251911 PMAQI
1st Sep 20251912 AMAQI
1st Sep 2025191 AMAQI
1st Sep 2025182 AMAQI
1st Sep 2025193 AMAQI
1st Sep 2025184 AMAQI
1st Sep 2025175 AMAQI

19°C18/20°C

1st Sep 2025166 AMAQI
1st Sep 2025207 AMAQI
1st Sep 2025178 AMAQI
1st Sep 2025229 AMAQI
1st Sep 20252210 AMAQI
1st Sep 20252411 AMAQI
1st Sep 20252612 PMAQI
1st Sep 2025241 PMAQI
1st Sep 2025212 PMAQI
1st Sep 2025223 PMAQI
1st Sep 2025214 PMAQI
1st Sep 2025205 PMAQI
1st Sep 2025196 PMAQI
1st Sep 2025197 PMAQI
1st Sep 2025198 PMAQI
1st Sep 2025199 PMAQI
1st Sep 20251910 PMAQI
1st Sep 20251911 PMAQI
2nd Sep 20251912 AMAQI
2nd Sep 2025191 AMAQI
2nd Sep 2025172 AMAQI
2nd Sep 2025183 AMAQI
2nd Sep 2025174 AMAQI
2nd Sep 2025175 AMAQI

18°C17/20°C

2nd Sep 2025156 AMAQI
2nd Sep 2025177 AMAQI
2nd Sep 2025178 AMAQI
2nd Sep 2025199 AMAQI
2nd Sep 20251910 AMAQI
2nd Sep 20252011 AMAQI
2nd Sep 20251912 PMAQI
2nd Sep 2025211 PMAQI
2nd Sep 2025192 PMAQI
2nd Sep 2025193 PMAQI
2nd Sep 2025184 PMAQI
2nd Sep 2025195 PMAQI
2nd Sep 2025186 PMAQI
2nd Sep 2025187 PMAQI
2nd Sep 2025188 PMAQI
2nd Sep 2025189 PMAQI
2nd Sep 20251910 PMAQI
2nd Sep 20252111 PMAQI
3rd Sep 20251912 AMAQI
3rd Sep 2025191 AMAQI
3rd Sep 2025162 AMAQI
3rd Sep 2025153 AMAQI
3rd Sep 2025164 AMAQI
3rd Sep 2025165 AMAQI

18°C16/19°C

3rd Sep 2025156 AMAQI
3rd Sep 2025167 AMAQI
3rd Sep 2025178 AMAQI
3rd Sep 2025169 AMAQI
3rd Sep 20251710 AMAQI
3rd Sep 20251711 AMAQI
3rd Sep 20251812 PMAQI
3rd Sep 2025171 PMAQI
3rd Sep 2025172 PMAQI
3rd Sep 2025183 PMAQI
3rd Sep 2025184 PMAQI
3rd Sep 2025185 PMAQI
3rd Sep 2025176 PMAQI
3rd Sep 2025197 PMAQI
3rd Sep 2025188 PMAQI
3rd Sep 2025189 PMAQI
3rd Sep 20251810 PMAQI
3rd Sep 20251811 PMAQI
4th Sep 20251812 AMAQI
4th Sep 2025181 AMAQI
4th Sep 2025182 AMAQI
4th Sep 2025173 AMAQI
4th Sep 2025174 AMAQI
4th Sep 2025195 AMAQI

19°C17/22°C

4th Sep 2025166 AMAQI
4th Sep 2025197 AMAQI
4th Sep 2025208 AMAQI
4th Sep 2025209 AMAQI
4th Sep 20252810 AMAQI
4th Sep 20252711 AMAQI
4th Sep 20252812 PMAQI
4th Sep 2025261 PMAQI
4th Sep 2025262 PMAQI
4th Sep 2025263 PMAQI
4th Sep 2025204 PMAQI
4th Sep 2025195 PMAQI
4th Sep 2025216 PMAQI
4th Sep 2025187 PMAQI
4th Sep 2025178 PMAQI
4th Sep 2025189 PMAQI
4th Sep 20251810 PMAQI
4th Sep 20252011 PMAQI
5th Sep 20251912 AMAQI
5th Sep 2025191 AMAQI
5th Sep 2025192 AMAQI
5th Sep 2025183 AMAQI
5th Sep 2025164 AMAQI
5th Sep 2025165 AMAQI

18°C17/20°C

5th Sep 2025166 AMAQI
5th Sep 2025187 AMAQI
5th Sep 2025188 AMAQI
5th Sep 2025189 AMAQI
5th Sep 20252010 AMAQI
5th Sep 20251911 AMAQI
5th Sep 20252412 PMAQI
5th Sep 2025191 PMAQI
5th Sep 2025172 PMAQI
5th Sep 2025183 PMAQI
5th Sep 2025184 PMAQI
5th Sep 2025185 PMAQI
5th Sep 2025176 PMAQI
5th Sep 2025177 PMAQI
5th Sep 2025178 PMAQI
5th Sep 2025189 PMAQI
5th Sep 20251810 PMAQI
5th Sep 20251811 PMAQI
6th Sep 20251812 AMAQI
6th Sep 2025181 AMAQI
6th Sep 2025182 AMAQI
6th Sep 2025203 AMAQI
6th Sep 2025184 AMAQI
6th Sep 2025205 AMAQI

17°C16/18°C

6th Sep 2025196 AMAQI
6th Sep 2025197 AMAQI
6th Sep 2025248 AMAQI
6th Sep 2025249 AMAQI
6th Sep 20252410 AMAQI
6th Sep 20252211 AMAQI
6th Sep 20251712 PMAQI
6th Sep 2025181 PMAQI
6th Sep 2025182 PMAQI
6th Sep 2025183 PMAQI
6th Sep 2025194 PMAQI
6th Sep 2025185 PMAQI
6th Sep 2025186 PMAQI
6th Sep 2025197 PMAQI
6th Sep 2025208 PMAQI
6th Sep 2025209 PMAQI
6th Sep 20251910 PMAQI
6th Sep 20251911 PMAQI
7th Sep 20251912 AMAQI
7th Sep 2025191 AMAQI
7th Sep 2025242 AMAQI
7th Sep 2025253 AMAQI
7th Sep 2025264 AMAQI
7th Sep 2025275 AMAQI

18°C14/21°C

7th Sep 2025236 AMAQI
7th Sep 2025237 AMAQI
7th Sep 2025238 AMAQI
7th Sep 2025249 AMAQI
7th Sep 20252310 AMAQI
7th Sep 20252211 AMAQI
7th Sep 20252412 PMAQI
7th Sep 2025221 PMAQI
7th Sep 2025222 PMAQI
7th Sep 2025213 PMAQI
7th Sep 2025204 PMAQI
7th Sep 2025205 PMAQI
7th Sep 2025196 PMAQI
7th Sep 2025187 PMAQI
7th Sep 2025208 PMAQI
7th Sep 2025229 PMAQI
7th Sep 20252410 PMAQI
7th Sep 20252311 PMAQI
8th Sep 20252312 AMAQI
8th Sep 2025231 AMAQI
8th Sep 2025222 AMAQI
8th Sep 2025203 AMAQI
8th Sep 2025214 AMAQI
8th Sep 2025215 AMAQI

21°C16/26°C

8th Sep 2025226 AMAQI
8th Sep 2025237 AMAQI
8th Sep 2025238 AMAQI
8th Sep 2025229 AMAQI
8th Sep 20252310 AMAQI
8th Sep 20252111 AMAQI
8th Sep 20252212 PMAQI
8th Sep 2025231 PMAQI
8th Sep 2025222 PMAQI
8th Sep 2025223 PMAQI
8th Sep 2025244 PMAQI
8th Sep 2025245 PMAQI
8th Sep 2025236 PMAQI
8th Sep 2025217 PMAQI
8th Sep 2025228 PMAQI
8th Sep 2025239 PMAQI
8th Sep 20252310 PMAQI
8th Sep 20252211 PMAQI
9th Sep 20252412 AMAQI
9th Sep 2025231 AMAQI
9th Sep 2025212 AMAQI
9th Sep 2025213 AMAQI
9th Sep 2025224 AMAQI
9th Sep 2025185 AMAQI

19°C17/19°C

9th Sep 2025186 AMAQI
9th Sep 2025197 AMAQI
9th Sep 2025198 AMAQI
9th Sep 2025199 AMAQI
9th Sep 20252210 AMAQI
9th Sep 20252111 AMAQI
9th Sep 20252112 PMAQI
9th Sep 2025191 PMAQI
9th Sep 2025192 PMAQI
9th Sep 2025183 PMAQI
9th Sep 2025184 PMAQI
9th Sep 2025205 PMAQI
9th Sep 2025216 PMAQI
9th Sep 2025207 PMAQI
9th Sep 2025198 PMAQI
9th Sep 2025219 PMAQI
9th Sep 20252110 PMAQI
9th Sep 20252211 PMAQI
10th Sep 20252112 AMAQI
10th Sep 2025221 AMAQI
10th Sep 2025172 AMAQI
10th Sep 2025183 AMAQI
10th Sep 2025184 AMAQI
10th Sep 2025205 AMAQI

15°C13/17°C

10th Sep 2025206 AMAQI
10th Sep 2025227 AMAQI
10th Sep 2025228 AMAQI
10th Sep 2025229 AMAQI
10th Sep 20252410 AMAQI
10th Sep 20252611 AMAQI
10th Sep 20252012 PMAQI
10th Sep 2025221 PMAQI
10th Sep 2025212 PMAQI
10th Sep 2025193 PMAQI
10th Sep 2025194 PMAQI
10th Sep 2025205 PMAQI
10th Sep 2025206 PMAQI
10th Sep 2025207 PMAQI
10th Sep 2025208 PMAQI
10th Sep 2025219 PMAQI
10th Sep 20252110 PMAQI
10th Sep 20252111 PMAQI
11th Sep 20252112 AMAQI
11th Sep 2025221 AMAQI
11th Sep 2025192 AMAQI
11th Sep 2025193 AMAQI
11th Sep 2025174 AMAQI
11th Sep 2025175 AMAQI

16°C12/21°C

11th Sep 2025186 AMAQI
11th Sep 2025187 AMAQI
11th Sep 2025208 AMAQI
11th Sep 2025209 AMAQI
11th Sep 20251910 AMAQI
11th Sep 20251911 AMAQI
11th Sep 20251912 PMAQI
11th Sep 2025211 PMAQI
11th Sep 2025222 PMAQI
11th Sep 2025213 PMAQI
11th Sep 2025194 PMAQI
11th Sep 2025195 PMAQI
11th Sep 2025186 PMAQI
11th Sep 2025187 PMAQI
11th Sep 2025198 PMAQI
11th Sep 2025209 PMAQI
11th Sep 20252010 PMAQI
11th Sep 20252111 PMAQI
12th Sep 20252012 AMAQI
12th Sep 2025201 AMAQI
12th Sep 2025202 AMAQI
12th Sep 2025183 AMAQI
12th Sep 2025174 AMAQI
12th Sep 2025165 AMAQI

17°C16/18°C

12th Sep 2025176 AMAQI
12th Sep 2025157 AMAQI
12th Sep 2025168 AMAQI
12th Sep 2025169 AMAQI
12th Sep 20251610 AMAQI
12th Sep 20251911 AMAQI
12th Sep 20251912 PMAQI
12th Sep 2025201 PMAQI
12th Sep 2025192 PMAQI
12th Sep 2025183 PMAQI
12th Sep 2025184 PMAQI
12th Sep 2025195 PMAQI
12th Sep 2025186 PMAQI
12th Sep 2025177 PMAQI
12th Sep 2025178 PMAQI
12th Sep 2025189 PMAQI
12th Sep 20251910 PMAQI
12th Sep 20251911 PMAQI
13th Sep 20251912 AMAQI
13th Sep 2025181 AMAQI
13th Sep 2025182 AMAQI
13th Sep 2025173 AMAQI
13th Sep 2025154 AMAQI
13th Sep 2025145 AMAQI

16°C15/17°C

13th Sep 2025146 AMAQI
13th Sep 2025167 AMAQI
13th Sep 2025188 AMAQI
13th Sep 2025169 AMAQI
13th Sep 20251510 AMAQI
13th Sep 20251811 AMAQI
13th Sep 20252412 PMAQI
13th Sep 2025211 PMAQI
13th Sep 2025192 PMAQI
13th Sep 2025183 PMAQI
13th Sep 2025164 PMAQI
13th Sep 2025165 PMAQI
13th Sep 2025166 PMAQI
13th Sep 2025167 PMAQI
13th Sep 2025168 PMAQI
13th Sep 2025169 PMAQI
13th Sep 20251710 PMAQI
13th Sep 20251711 PMAQI
14th Sep 20251712 AMAQI
14th Sep 2025171 AMAQI
14th Sep 2025172 AMAQI
14th Sep 2025173 AMAQI
14th Sep 2025174 AMAQI
14th Sep 2025175 AMAQI

15°C14/17°C

14th Sep 2025166 AMAQI
14th Sep 2025187 AMAQI
14th Sep 2025188 AMAQI
14th Sep 2025189 AMAQI
14th Sep 20252510 AMAQI
14th Sep 20252511 AMAQI
14th Sep 20252612 PMAQI
14th Sep 2025231 PMAQI
14th Sep 2025192 PMAQI
14th Sep 2025193 PMAQI
14th Sep 2025184 PMAQI
14th Sep 2025185 PMAQI
14th Sep 2025176 PMAQI
14th Sep 2025177 PMAQI
14th Sep 2025178 PMAQI
14th Sep 2025189 PMAQI
14th Sep 20251810 PMAQI
14th Sep 20251711 PMAQI
15th Sep 20251812 AMAQI
15th Sep 2025181 AMAQI
15th Sep 2025142 AMAQI
15th Sep 2025183 AMAQI
15th Sep 2025134 AMAQI
15th Sep 2025165 AMAQI

16°C15/17°C

15th Sep 2025206 AMAQI
15th Sep 2025307 AMAQI
15th Sep 2025378 AMAQI
15th Sep 2025329 AMAQI
15th Sep 20253010 AMAQI
15th Sep 20253411 AMAQI
15th Sep 20253112 PMAQI
15th Sep 2025261 PMAQI
15th Sep 2025292 PMAQI
15th Sep 2025273 PMAQI
15th Sep 2025254 PMAQI
15th Sep 2025275 PMAQI
15th Sep 2025256 PMAQI
15th Sep 2025327 PMAQI
15th Sep 2025338 PMAQI
15th Sep 2025279 PMAQI
15th Sep 20252210 PMAQI
15th Sep 20252211 PMAQI
16th Sep 20252312 AMAQI
16th Sep 2025211 AMAQI
16th Sep 2025272 AMAQI
16th Sep 2025283 AMAQI
16th Sep 2025254 AMAQI
16th Sep 2025285 AMAQI

17°C16/17°C

16th Sep 2025276 AMAQI
16th Sep 2025267 AMAQI
16th Sep 2025238 AMAQI
16th Sep 2025259 AMAQI
16th Sep 20252210 AMAQI
16th Sep 20252411 AMAQI
16th Sep 20252612 PMAQI
16th Sep 2025231 PMAQI
16th Sep 2025242 PMAQI
16th Sep 2025263 PMAQI
16th Sep 2025264 PMAQI
16th Sep 2025255 PMAQI
16th Sep 2025256 PMAQI
16th Sep 2025287 PMAQI
16th Sep 2025268 PMAQI
16th Sep 2025249 PMAQI
16th Sep 20252510 PMAQI
16th Sep 20252411 PMAQI
17th Sep 20252412 AMAQI
17th Sep 2025251 AMAQI
17th Sep 2025242 AMAQI
17th Sep 2025223 AMAQI
17th Sep 2025224 AMAQI
17th Sep 2025245 AMAQI

16°C15/16°C

17th Sep 2025236 AMAQI
6 AM
17th Sep 2025197 AMAQI
1 PM
8 PM
1 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
10 AM - 12 PM

24AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
6 AM

20AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 12 PM (Avg. 24), while the lowest AQI was between 6 AM to 6 AM (Avg. 20).
Night time
Avg. Highest Time
1 AM

22AQI

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

19AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 22), while the lowest AQI was between 4 AM to 5 AM (Avg. 19).

2025 Days Vs Air Quality

Haarlem, Noord Holland, Netherlands

2025

79%

205

19%

50

2%

4

Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)

Good
205 Days
Moderate
50 Days
Poor
4 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 79%

Health Risk Level:

Low

In 2025, 79% of 260 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
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
2nd August 2025
20AQI
3rd August 2025
21AQI
4th August 2025
22AQI
5th August 2025
23AQI
6th August 2025
26AQI
7th August 2025
29AQI
8th August 2025
30AQI
9th August 2025
42AQI
10th August 2025
31AQI
11th August 2025
30AQI
12th August 2025
43AQI
13th August 2025
53AQI
14th August 2025
57AQI
15th August 2025
44AQI
16th August 2025
43AQI
17th August 2025
28AQI
18th August 2025
22AQI
19th August 2025
22AQI
20th August 2025
25AQI
21st August 2025
18AQI
22nd August 2025
17AQI
23rd August 2025
18AQI
24th August 2025
18AQI
25th August 2025
21AQI
26th August 2025
29AQI
27th August 2025
28AQI
28th August 2025
30AQI
29th August 2025
23AQI
30th August 2025
20AQI
31st August 2025
18AQI
1st September 2025
20AQI
2nd September 2025
18AQI
3rd September 2025
17AQI
4th September 2025
21AQI
5th September 2025
18AQI
6th September 2025
19AQI
7th September 2025
22AQI
8th September 2025
22AQI
9th September 2025
20AQI
10th September 2025
20AQI
11th September 2025
19AQI
12th September 2025
18AQI
13th September 2025
17AQI
14th September 2025
18AQI
15th September 2025
25AQI
16th September 2025
25AQI
17th September 2025
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

46AQI

61AQI

58AQI

39AQI

29AQI

30AQI

25AQI

28AQI

20AQI

No. of days

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

202538AQI

22
8
1
10
17
1
12
17
2
27
3
30
1
29
1
30
1
29
2
16
205
50
4

Highest AQI recorded in

February

61AQI

Lowest AQI recorded in

September

20AQI

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
2022(Avg.)
39AQI
Least Polluted Year Recorded
2023(Avg.)
34AQI

Haarlem's annual 2025 AQI (38) shows an average percentage change of 7.8% (worsened AQI) compared to previous years: 2020 (35), 2021 (34), 2022 (39), 2023 (34), 2024 (36).