Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Helsinki, Uusimaa, Finland 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+

October Air Quality Analysis

Helsinki, Uusimaa, Finland

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
31st Oct 2021
80AQI
Lowest AQI recorded on
9th Oct 2024
12AQI

Same Day Analysis (25th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 50 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 25th Oct - 26th Oct 2025

Helsinki, Uusimaa, Finland

AQI
Day
Night
.

7 AM25th Oct 2025

6 PM

6 AM26th Oct 2025

Day time
Avg. Highest Time
11AM25th Oct

63AQI

Avg. Lowest Time
8AM25th Oct

30AQI

Night time
Avg. Highest Time
7PM25th Oct

53AQI

Avg. Lowest Time
7AM25th Oct

30AQI

In the last 24 hours,

Helsinki's AQI reached its highest point of 63 at 11 AM during the Day, while the lowest point, 30, was recorded at 8 AM during the Day between 25th Oct and 26th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Helsinki, Uusimaa, Finland

SepOct
26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th
Day
Night
26th Sep 2025127 AMAQI
26th Sep 2025118 AMAQI
26th Sep 2025139 AMAQI
26th Sep 20251210 AMAQI
26th Sep 20251211 AMAQI
26th Sep 20251512 PMAQI
26th Sep 2025171 PMAQI
26th Sep 2025182 PMAQI
26th Sep 2025173 PMAQI
26th Sep 2025174 PMAQI
26th Sep 2025185 PMAQI
26th Sep 2025186 PMAQI
26th Sep 2025177 PMAQI
26th Sep 2025168 PMAQI
26th Sep 2025169 PMAQI
26th Sep 20251510 PMAQI
26th Sep 20251511 PMAQI
27th Sep 20251512 AMAQI
27th Sep 2025141 AMAQI
27th Sep 2025132 AMAQI
27th Sep 2025133 AMAQI
27th Sep 2025134 AMAQI
27th Sep 2025135 AMAQI
27th Sep 2025126 AMAQI

11°C8/15°C

27th Sep 2025107 AMAQI
27th Sep 202568 AMAQI
27th Sep 202569 AMAQI
27th Sep 2025610 AMAQI
27th Sep 2025811 AMAQI
27th Sep 2025812 PMAQI
27th Sep 202571 PMAQI
27th Sep 202562 PMAQI
27th Sep 202563 PMAQI
27th Sep 202564 PMAQI
27th Sep 202565 PMAQI
27th Sep 202566 PMAQI
27th Sep 202577 PMAQI
27th Sep 2025108 PMAQI
27th Sep 2025119 PMAQI
27th Sep 20251210 PMAQI
27th Sep 20251311 PMAQI
28th Sep 20251512 AMAQI
28th Sep 2025161 AMAQI
28th Sep 2025122 AMAQI
28th Sep 2025123 AMAQI
28th Sep 2025124 AMAQI
28th Sep 2025135 AMAQI
28th Sep 2025116 AMAQI

11°C9/15°C

28th Sep 2025117 AMAQI
28th Sep 2025118 AMAQI
28th Sep 2025119 AMAQI
28th Sep 20251110 AMAQI
28th Sep 20251111 AMAQI
28th Sep 20251112 PMAQI
28th Sep 2025131 PMAQI
28th Sep 2025112 PMAQI
28th Sep 2025113 PMAQI
28th Sep 2025114 PMAQI
28th Sep 2025105 PMAQI
28th Sep 202596 PMAQI
28th Sep 202597 PMAQI
28th Sep 2025138 PMAQI
28th Sep 2025239 PMAQI
28th Sep 20252310 PMAQI
28th Sep 20252611 PMAQI
29th Sep 20252712 AMAQI
29th Sep 2025251 AMAQI
29th Sep 2025222 AMAQI
29th Sep 2025213 AMAQI
29th Sep 2025204 AMAQI
29th Sep 2025175 AMAQI
29th Sep 2025156 AMAQI

11°C9/13°C

29th Sep 2025177 AMAQI
29th Sep 2025198 AMAQI
29th Sep 2025249 AMAQI
29th Sep 20252610 AMAQI
29th Sep 20253011 AMAQI
29th Sep 20252912 PMAQI
29th Sep 2025231 PMAQI
29th Sep 2025192 PMAQI
29th Sep 2025173 PMAQI
29th Sep 2025154 PMAQI
29th Sep 2025185 PMAQI
29th Sep 2025166 PMAQI
29th Sep 2025147 PMAQI
29th Sep 2025158 PMAQI
29th Sep 2025159 PMAQI
29th Sep 20251710 PMAQI
29th Sep 20251811 PMAQI
30th Sep 20252212 AMAQI
30th Sep 2025241 AMAQI
30th Sep 2025222 AMAQI
30th Sep 2025193 AMAQI
30th Sep 2025194 AMAQI
30th Sep 2025185 AMAQI
30th Sep 2025176 AMAQI

9°C7/10°C

30th Sep 2025187 AMAQI
30th Sep 2025208 AMAQI
30th Sep 2025239 AMAQI
30th Sep 20252910 AMAQI
30th Sep 20253411 AMAQI
30th Sep 20253412 PMAQI
30th Sep 2025301 PMAQI
30th Sep 2025222 PMAQI
30th Sep 2025173 PMAQI
30th Sep 2025184 PMAQI
30th Sep 2025175 PMAQI
30th Sep 2025206 PMAQI
30th Sep 2025197 PMAQI
30th Sep 2025228 PMAQI
30th Sep 2025289 PMAQI
30th Sep 20253210 PMAQI
30th Sep 20253111 PMAQI
1st Oct 20252912 AMAQI
1st Oct 2025311 AMAQI
1st Oct 2025282 AMAQI
1st Oct 2025243 AMAQI
1st Oct 2025224 AMAQI
1st Oct 2025225 AMAQI
1st Oct 2025216 AMAQI

8°C6/10°C

1st Oct 2025237 AMAQI
1st Oct 2025268 AMAQI
1st Oct 2025269 AMAQI
1st Oct 20253110 AMAQI
1st Oct 20253311 AMAQI
1st Oct 20253312 PMAQI
1st Oct 2025351 PMAQI
1st Oct 2025352 PMAQI
1st Oct 2025353 PMAQI
1st Oct 2025324 PMAQI
1st Oct 2025315 PMAQI
1st Oct 2025296 PMAQI
1st Oct 2025367 PMAQI
1st Oct 2025398 PMAQI
1st Oct 2025429 PMAQI
1st Oct 20254410 PMAQI
1st Oct 20254411 PMAQI
2nd Oct 20254912 AMAQI
2nd Oct 2025511 AMAQI
2nd Oct 2025492 AMAQI
2nd Oct 2025443 AMAQI
2nd Oct 2025474 AMAQI
2nd Oct 2025455 AMAQI
2nd Oct 2025436 AMAQI

9°C7/11°C

2nd Oct 2025427 AMAQI
2nd Oct 2025438 AMAQI
2nd Oct 2025459 AMAQI
2nd Oct 20254410 AMAQI
2nd Oct 20255311 AMAQI
2nd Oct 20255312 PMAQI
2nd Oct 2025551 PMAQI
2nd Oct 2025572 PMAQI
2nd Oct 2025553 PMAQI
2nd Oct 2025514 PMAQI
2nd Oct 2025475 PMAQI
2nd Oct 2025456 PMAQI
2nd Oct 2025427 PMAQI
2nd Oct 2025438 PMAQI
2nd Oct 2025429 PMAQI
2nd Oct 20254110 PMAQI
2nd Oct 20254211 PMAQI
3rd Oct 20254112 AMAQI
3rd Oct 2025381 AMAQI
3rd Oct 2025362 AMAQI
3rd Oct 2025383 AMAQI
3rd Oct 2025404 AMAQI
3rd Oct 2025375 AMAQI
3rd Oct 2025366 AMAQI

8°C7/11°C

3rd Oct 2025377 AMAQI
3rd Oct 2025338 AMAQI
3rd Oct 2025329 AMAQI
3rd Oct 20253110 AMAQI
3rd Oct 20253511 AMAQI
3rd Oct 20253712 PMAQI
3rd Oct 2025371 PMAQI
3rd Oct 2025362 PMAQI
3rd Oct 2025483 PMAQI
3rd Oct 2025464 PMAQI
3rd Oct 2025465 PMAQI
3rd Oct 2025476 PMAQI
3rd Oct 2025467 PMAQI
3rd Oct 2025448 PMAQI
3rd Oct 2025449 PMAQI
3rd Oct 20254510 PMAQI
3rd Oct 20254811 PMAQI
4th Oct 20255212 AMAQI
4th Oct 2025521 AMAQI
4th Oct 2025522 AMAQI
4th Oct 2025503 AMAQI
4th Oct 2025494 AMAQI
4th Oct 2025505 AMAQI
4th Oct 2025516 AMAQI

9°C7/10°C

4th Oct 2025487 AMAQI
4th Oct 2025468 AMAQI
4th Oct 2025439 AMAQI
4th Oct 20254210 AMAQI
4th Oct 20254311 AMAQI
4th Oct 20254412 PMAQI
4th Oct 2025431 PMAQI
4th Oct 2025422 PMAQI
4th Oct 2025403 PMAQI
4th Oct 2025414 PMAQI
4th Oct 2025465 PMAQI
4th Oct 2025456 PMAQI
4th Oct 2025467 PMAQI
4th Oct 2025478 PMAQI
4th Oct 2025459 PMAQI
4th Oct 20253910 PMAQI
4th Oct 20254111 PMAQI
5th Oct 20254512 AMAQI
5th Oct 2025471 AMAQI
5th Oct 2025502 AMAQI
5th Oct 2025493 AMAQI
5th Oct 2025474 AMAQI
5th Oct 2025445 AMAQI
5th Oct 2025476 AMAQI

9°C7/11°C

5th Oct 2025517 AMAQI
5th Oct 2025558 AMAQI
5th Oct 2025559 AMAQI
5th Oct 20255410 AMAQI
5th Oct 20255511 AMAQI
5th Oct 20255512 PMAQI
5th Oct 2025551 PMAQI
5th Oct 2025562 PMAQI
5th Oct 2025563 PMAQI
5th Oct 2025564 PMAQI
5th Oct 2025565 PMAQI
5th Oct 2025566 PMAQI
5th Oct 2025567 PMAQI
5th Oct 2025568 PMAQI
5th Oct 2025569 PMAQI
5th Oct 20255610 PMAQI
5th Oct 20255211 PMAQI
6th Oct 20254912 AMAQI
6th Oct 2025431 AMAQI
6th Oct 2025402 AMAQI
6th Oct 2025423 AMAQI
6th Oct 2025434 AMAQI
6th Oct 2025475 AMAQI
6th Oct 2025476 AMAQI

10°C9/11°C

6th Oct 2025467 AMAQI
6th Oct 2025448 AMAQI
6th Oct 2025429 AMAQI
6th Oct 20254210 AMAQI
6th Oct 20254211 AMAQI
6th Oct 20253412 PMAQI
6th Oct 2025231 PMAQI
6th Oct 2025342 PMAQI
6th Oct 2025343 PMAQI
6th Oct 2025254 PMAQI
6th Oct 2025265 PMAQI
6th Oct 2025246 PMAQI
6th Oct 2025167 PMAQI
6th Oct 2025168 PMAQI

11°C10/13°C

7th Oct 2025182 PMAQI
7th Oct 2025383 PMAQI
7th Oct 2025484 PMAQI
7th Oct 2025475 PMAQI
7th Oct 2025426 PMAQI
7th Oct 2025437 PMAQI
7th Oct 2025418 PMAQI
7th Oct 2025289 PMAQI
7th Oct 20254010 PMAQI
7th Oct 20254311 PMAQI
8th Oct 20254412 AMAQI
8th Oct 2025441 AMAQI
8th Oct 2025472 AMAQI
8th Oct 2025473 AMAQI
8th Oct 2025504 AMAQI
8th Oct 2025495 AMAQI
8th Oct 2025486 AMAQI

12°C11/13°C

8th Oct 2025507 AMAQI
8th Oct 2025548 AMAQI
8th Oct 2025519 AMAQI
8th Oct 20254810 AMAQI
8th Oct 20255011 AMAQI
8th Oct 20254712 PMAQI
8th Oct 2025461 PMAQI
8th Oct 2025472 PMAQI
8th Oct 2025513 PMAQI
8th Oct 2025554 PMAQI
8th Oct 2025515 PMAQI
8th Oct 2025506 PMAQI
8th Oct 2025497 PMAQI
8th Oct 2025458 PMAQI
8th Oct 2025459 PMAQI
8th Oct 20254510 PMAQI
8th Oct 20254511 PMAQI
9th Oct 20254912 AMAQI
9th Oct 2025461 AMAQI
9th Oct 2025262 AMAQI
9th Oct 2025253 AMAQI
9th Oct 2025254 AMAQI
9th Oct 2025275 AMAQI
9th Oct 2025296 AMAQI

11°C11/12°C

9th Oct 2025367 AMAQI
9th Oct 2025258 AMAQI
9th Oct 2025269 AMAQI
9th Oct 20253210 AMAQI
9th Oct 20254311 AMAQI
9th Oct 20254612 PMAQI
9th Oct 2025461 PMAQI
9th Oct 2025462 PMAQI
9th Oct 2025423 PMAQI
9th Oct 2025394 PMAQI
9th Oct 2025415 PMAQI
9th Oct 2025396 PMAQI
9th Oct 2025397 PMAQI
9th Oct 2025398 PMAQI
9th Oct 2025419 PMAQI
9th Oct 20254310 PMAQI
9th Oct 20254211 PMAQI
10th Oct 20253812 AMAQI
10th Oct 2025391 AMAQI
10th Oct 2025352 AMAQI
10th Oct 2025213 AMAQI
10th Oct 2025244 AMAQI
10th Oct 2025245 AMAQI
10th Oct 2025256 AMAQI

12°C11/13°C

10th Oct 2025257 AMAQI
10th Oct 2025228 AMAQI
10th Oct 2025249 AMAQI
10th Oct 20252210 AMAQI
10th Oct 20252111 AMAQI
10th Oct 20252312 PMAQI
10th Oct 2025231 PMAQI
10th Oct 2025202 PMAQI
10th Oct 2025133 PMAQI
10th Oct 2025144 PMAQI
10th Oct 2025145 PMAQI
10th Oct 2025136 PMAQI
10th Oct 2025237 PMAQI
10th Oct 2025418 PMAQI
10th Oct 2025479 PMAQI
10th Oct 20254610 PMAQI
10th Oct 20254711 PMAQI
11th Oct 20254512 AMAQI
11th Oct 2025451 AMAQI
11th Oct 2025432 AMAQI
11th Oct 2025343 AMAQI
11th Oct 2025224 AMAQI
11th Oct 2025245 AMAQI
11th Oct 2025286 AMAQI

10°C8/11°C

11th Oct 2025297 AMAQI
11th Oct 2025188 AMAQI
11th Oct 2025259 AMAQI
11th Oct 20252610 AMAQI
11th Oct 20251411 AMAQI
11th Oct 20251412 PMAQI
11th Oct 2025141 PMAQI
11th Oct 2025132 PMAQI
11th Oct 2025123 PMAQI
11th Oct 2025124 PMAQI
11th Oct 2025145 PMAQI
11th Oct 2025156 PMAQI
11th Oct 2025227 PMAQI
11th Oct 2025228 PMAQI
11th Oct 2025199 PMAQI
11th Oct 20251910 PMAQI
11th Oct 20251511 PMAQI
12th Oct 20251512 AMAQI
12th Oct 2025141 AMAQI
12th Oct 2025132 AMAQI
12th Oct 2025133 AMAQI
12th Oct 2025174 AMAQI
12th Oct 2025245 AMAQI
12th Oct 2025276 AMAQI

10°C8/11°C

12th Oct 2025247 AMAQI
12th Oct 2025248 AMAQI
12th Oct 2025279 AMAQI
12th Oct 20252310 AMAQI
12th Oct 20252311 AMAQI
12th Oct 20252212 PMAQI
12th Oct 2025231 PMAQI
12th Oct 2025262 PMAQI
12th Oct 2025233 PMAQI
12th Oct 2025264 PMAQI
12th Oct 2025265 PMAQI
12th Oct 2025246 PMAQI
12th Oct 2025227 PMAQI
12th Oct 2025238 PMAQI
12th Oct 2025299 PMAQI
12th Oct 20252510 PMAQI
12th Oct 20252811 PMAQI
13th Oct 20252612 AMAQI
13th Oct 2025261 AMAQI
13th Oct 2025302 AMAQI
13th Oct 2025273 AMAQI
13th Oct 2025254 AMAQI
13th Oct 2025245 AMAQI
13th Oct 2025256 AMAQI

8°C6/10°C

13th Oct 2025257 AMAQI
13th Oct 2025248 AMAQI
13th Oct 2025249 AMAQI
13th Oct 20251310 AMAQI
13th Oct 20251311 AMAQI
13th Oct 20251312 PMAQI
13th Oct 2025131 PMAQI
13th Oct 2025132 PMAQI
13th Oct 2025133 PMAQI
13th Oct 2025144 PMAQI
13th Oct 2025145 PMAQI
13th Oct 2025136 PMAQI
13th Oct 2025197 PMAQI
13th Oct 2025148 PMAQI
13th Oct 2025239 PMAQI
13th Oct 20252510 PMAQI
13th Oct 20252511 PMAQI
14th Oct 20253212 AMAQI
14th Oct 2025301 AMAQI
14th Oct 2025212 AMAQI
14th Oct 2025133 AMAQI
14th Oct 2025144 AMAQI
14th Oct 2025175 AMAQI
14th Oct 2025296 AMAQI

6°C6/6°C

14th Oct 2025287 AMAQI
14th Oct 2025308 AMAQI
14th Oct 2025269 AMAQI
14th Oct 20252710 AMAQI
14th Oct 20252711 AMAQI
14th Oct 20252712 PMAQI
14th Oct 2025281 PMAQI
14th Oct 2025172 PMAQI
14th Oct 2025123 PMAQI
14th Oct 2025124 PMAQI
14th Oct 2025265 PMAQI
14th Oct 2025396 PMAQI
14th Oct 2025397 PMAQI
14th Oct 2025408 PMAQI
14th Oct 2025399 PMAQI
14th Oct 20254310 PMAQI
14th Oct 20254311 PMAQI
15th Oct 20254312 AMAQI
15th Oct 2025431 AMAQI
15th Oct 2025402 AMAQI
15th Oct 2025403 AMAQI
15th Oct 2025424 AMAQI
15th Oct 2025445 AMAQI
15th Oct 2025416 AMAQI

7°C6/9°C

15th Oct 2025357 AMAQI
15th Oct 2025278 AMAQI
15th Oct 2025239 AMAQI
15th Oct 20253210 AMAQI
15th Oct 20253511 AMAQI
15th Oct 20253012 PMAQI
15th Oct 2025381 PMAQI
15th Oct 2025322 PMAQI
15th Oct 2025143 PMAQI
15th Oct 2025134 PMAQI
15th Oct 2025135 PMAQI
15th Oct 2025246 PMAQI
15th Oct 2025397 PMAQI
15th Oct 2025408 PMAQI
15th Oct 2025399 PMAQI
15th Oct 20254010 PMAQI
15th Oct 20254011 PMAQI
16th Oct 20254112 AMAQI
16th Oct 2025421 AMAQI
16th Oct 2025412 AMAQI
16th Oct 2025403 AMAQI
16th Oct 2025424 AMAQI
16th Oct 2025425 AMAQI
16th Oct 2025426 AMAQI

7°C4/10°C

16th Oct 2025437 AMAQI
16th Oct 2025428 AMAQI
16th Oct 2025439 AMAQI
16th Oct 20253810 AMAQI
16th Oct 20253011 AMAQI
16th Oct 20253012 PMAQI
16th Oct 2025301 PMAQI
16th Oct 2025282 PMAQI
16th Oct 2025273 PMAQI
16th Oct 2025244 PMAQI
16th Oct 2025175 PMAQI
16th Oct 2025156 PMAQI
16th Oct 2025287 PMAQI
16th Oct 2025278 PMAQI
16th Oct 2025239 PMAQI
16th Oct 20253410 PMAQI
16th Oct 20253911 PMAQI
17th Oct 20254012 AMAQI
17th Oct 2025361 AMAQI
17th Oct 2025212 AMAQI
17th Oct 2025173 AMAQI
17th Oct 2025174 AMAQI
17th Oct 2025195 AMAQI
17th Oct 2025266 AMAQI

8°C4/11°C

17th Oct 2025297 AMAQI
17th Oct 2025308 AMAQI
17th Oct 2025399 AMAQI
17th Oct 20253910 AMAQI
17th Oct 20253711 AMAQI
17th Oct 20253112 PMAQI
17th Oct 2025191 PMAQI
17th Oct 2025302 PMAQI
17th Oct 2025403 PMAQI
17th Oct 2025414 PMAQI
17th Oct 2025475 PMAQI
17th Oct 2025496 PMAQI
17th Oct 2025547 PMAQI
17th Oct 2025578 PMAQI
17th Oct 2025579 PMAQI
17th Oct 20255510 PMAQI
17th Oct 20255411 PMAQI
18th Oct 20255312 AMAQI
18th Oct 2025501 AMAQI
18th Oct 2025502 AMAQI
18th Oct 2025493 AMAQI
18th Oct 2025514 AMAQI
18th Oct 2025515 AMAQI
18th Oct 2025486 AMAQI

5°C3/8°C

18th Oct 2025497 AMAQI
18th Oct 2025518 AMAQI
18th Oct 2025499 AMAQI
18th Oct 20255010 AMAQI
18th Oct 20254911 AMAQI
18th Oct 20254612 PMAQI
18th Oct 2025461 PMAQI
18th Oct 2025452 PMAQI
18th Oct 2025503 PMAQI
18th Oct 2025514 PMAQI
18th Oct 2025525 PMAQI
18th Oct 2025536 PMAQI
18th Oct 2025537 PMAQI
18th Oct 2025538 PMAQI
18th Oct 2025659 PMAQI
18th Oct 20255710 PMAQI
18th Oct 20254911 PMAQI
19th Oct 20255112 AMAQI
19th Oct 2025531 AMAQI
19th Oct 2025532 AMAQI
19th Oct 2025513 AMAQI
19th Oct 2025504 AMAQI
19th Oct 2025505 AMAQI
19th Oct 2025496 AMAQI

4°C2/6°C

19th Oct 2025467 AMAQI
19th Oct 2025438 AMAQI
19th Oct 2025479 AMAQI
19th Oct 20253310 AMAQI
19th Oct 20252511 AMAQI
19th Oct 20251312 PMAQI
19th Oct 2025191 PMAQI
19th Oct 2025252 PMAQI
19th Oct 2025283 PMAQI
19th Oct 2025234 PMAQI
19th Oct 2025235 PMAQI
19th Oct 2025266 PMAQI
19th Oct 2025307 PMAQI
19th Oct 2025268 PMAQI
19th Oct 2025299 PMAQI
19th Oct 20253810 PMAQI
19th Oct 20253711 PMAQI
20th Oct 20253012 AMAQI
20th Oct 2025451 AMAQI
20th Oct 2025412 AMAQI
20th Oct 2025383 AMAQI
20th Oct 2025234 AMAQI
20th Oct 2025255 AMAQI
20th Oct 2025236 AMAQI

6°C3/9°C

20th Oct 2025237 AMAQI
20th Oct 2025238 AMAQI
20th Oct 2025259 AMAQI
20th Oct 20252410 AMAQI
20th Oct 20252411 AMAQI
20th Oct 20253012 PMAQI
20th Oct 2025271 PMAQI
20th Oct 2025252 PMAQI
20th Oct 2025213 PMAQI
20th Oct 2025224 PMAQI
20th Oct 2025205 PMAQI
20th Oct 2025226 PMAQI
20th Oct 2025277 PMAQI
20th Oct 2025268 PMAQI
20th Oct 2025419 PMAQI
20th Oct 20255610 PMAQI
20th Oct 20255911 PMAQI
21st Oct 20256012 AMAQI
21st Oct 2025491 AMAQI
21st Oct 2025372 AMAQI
21st Oct 2025353 AMAQI
21st Oct 2025324 AMAQI
21st Oct 2025345 AMAQI
21st Oct 2025346 AMAQI

8°C6/10°C

21st Oct 2025327 AMAQI
21st Oct 2025258 AMAQI
21st Oct 2025279 AMAQI
21st Oct 20254310 AMAQI
21st Oct 20255211 AMAQI
21st Oct 20253112 PMAQI
21st Oct 2025281 PMAQI
21st Oct 2025262 PMAQI
21st Oct 2025243 PMAQI
21st Oct 2025184 PMAQI
21st Oct 2025235 PMAQI
21st Oct 2025246 PMAQI
21st Oct 2025217 PMAQI
21st Oct 2025188 PMAQI
21st Oct 2025179 PMAQI
21st Oct 20251710 PMAQI
21st Oct 20251611 PMAQI
22nd Oct 20251612 AMAQI
22nd Oct 2025181 AMAQI
22nd Oct 2025202 AMAQI
22nd Oct 2025193 AMAQI
22nd Oct 2025184 AMAQI
22nd Oct 2025185 AMAQI
22nd Oct 2025186 AMAQI

7°C7/8°C

22nd Oct 2025207 AMAQI
22nd Oct 2025258 AMAQI
22nd Oct 2025339 AMAQI
22nd Oct 20254010 AMAQI
22nd Oct 20254411 AMAQI
22nd Oct 20254812 PMAQI
22nd Oct 2025501 PMAQI
22nd Oct 2025512 PMAQI
22nd Oct 2025503 PMAQI
22nd Oct 2025494 PMAQI
22nd Oct 2025475 PMAQI
22nd Oct 2025456 PMAQI
22nd Oct 2025467 PMAQI
22nd Oct 2025478 PMAQI
22nd Oct 2025459 PMAQI
22nd Oct 20254410 PMAQI
22nd Oct 20253811 PMAQI
23rd Oct 20253412 AMAQI
23rd Oct 2025321 AMAQI
23rd Oct 2025292 AMAQI
23rd Oct 2025293 AMAQI
23rd Oct 2025324 AMAQI
23rd Oct 2025345 AMAQI
23rd Oct 2025356 AMAQI

7°C6/8°C

23rd Oct 2025387 AMAQI
23rd Oct 2025388 AMAQI
23rd Oct 2025409 AMAQI
23rd Oct 20254110 AMAQI
23rd Oct 20254111 AMAQI
23rd Oct 20254212 PMAQI
23rd Oct 2025491 PMAQI
23rd Oct 2025522 PMAQI
23rd Oct 2025483 PMAQI
23rd Oct 2025494 PMAQI
23rd Oct 2025555 PMAQI
23rd Oct 2025556 PMAQI
23rd Oct 2025497 PMAQI
23rd Oct 2025448 PMAQI
23rd Oct 2025409 PMAQI
23rd Oct 20253510 PMAQI
23rd Oct 20253011 PMAQI
24th Oct 20252912 AMAQI
24th Oct 2025291 AMAQI
24th Oct 2025362 AMAQI
24th Oct 2025493 AMAQI
24th Oct 2025554 AMAQI
24th Oct 2025555 AMAQI
24th Oct 2025536 AMAQI

8°C7/8°C

24th Oct 2025487 AMAQI
24th Oct 2025438 AMAQI
24th Oct 2025409 AMAQI
24th Oct 20253710 AMAQI
24th Oct 20253511 AMAQI
24th Oct 20253212 PMAQI
24th Oct 2025321 PMAQI
24th Oct 2025362 PMAQI
24th Oct 2025393 PMAQI
24th Oct 2025384 PMAQI
24th Oct 2025355 PMAQI
24th Oct 2025356 PMAQI
24th Oct 2025387 PMAQI
24th Oct 2025478 PMAQI
24th Oct 2025529 PMAQI
24th Oct 20255210 PMAQI
24th Oct 20255211 PMAQI
25th Oct 20255412 AMAQI
25th Oct 2025551 AMAQI
25th Oct 2025552 AMAQI
25th Oct 2025553 AMAQI
25th Oct 2025524 AMAQI
25th Oct 2025495 AMAQI
25th Oct 2025376 AMAQI

9°C8/9°C

25th Oct 2025307 AMAQI
25th Oct 2025308 AMAQI
25th Oct 2025379 AMAQI
25th Oct 20255310 AMAQI
25th Oct 20256311 AMAQI
25th Oct 20256212 PMAQI
25th Oct 2025571 PMAQI
25th Oct 2025492 PMAQI
25th Oct 2025473 PMAQI
25th Oct 2025524 PMAQI
25th Oct 2025515 PMAQI
25th Oct 2025506 PMAQI
25th Oct 2025537 PMAQI
25th Oct 2025538 PMAQI
25th Oct 2025529 PMAQI
25th Oct 20254910 PMAQI
25th Oct 20254711 PMAQI
26th Oct 20254612 AMAQI
26th Oct 2025441 AMAQI
26th Oct 2025422 AMAQI
26th Oct 2025373 AMAQI
26th Oct 2025384 AMAQI
26th Oct 2025395 AMAQI
26th Oct 2025386 AMAQI

10°C10/11°C

26th Oct 2025327 AMAQI
7 AM
26th Oct 2025288 AMAQI
26th Oct 2025309 AMAQI
26th Oct 20253410 AMAQI
26th Oct 20253511 AMAQI
26th Oct 20253112 PMAQI
12 PM
26th Oct 2025221 PMAQI
26th Oct 2025232 PMAQI
26th Oct 2025203 PMAQI
26th Oct 2025214 PMAQI
26th Oct 2025195 PMAQI
26th Oct 2025146 PMAQI
6 PM
26th Oct 2025117 PMAQI
26th Oct 2025118 PMAQI
26th Oct 2025119 PMAQI
26th Oct 20251110 PMAQI
26th Oct 20251111 PMAQI
12 AM
6 AM

--°C/°C

Day time
Avg. Highest Time
10 AM - 11 AM

34AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
4 PM

30AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 10 AM to 11 AM (Avg. 34), while the lowest AQI was between 4 PM to 4 PM (Avg. 30).
Night time
Avg. Highest Time
12 AM - 1 AM

37AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
3 AM - 6 AM

32AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 1 AM (Avg. 37), while the lowest AQI was between 3 AM to 6 AM (Avg. 32).

2025 Days Vs Air Quality

Helsinki, Uusimaa, Finland

2025

95%

282

5%

16

Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)

Good
282 Days
Moderate
16 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 95%

Health Risk Level:

Very Low

In 2025, 95% of 299 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.

Annual Air Quality Insights

Helsinki, Uusimaa, Finland

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
25AQI
2nd January 2025
23AQI
3rd January 2025
23AQI
4th January 2025
22AQI
5th January 2025
22AQI
6th January 2025
25AQI
7th January 2025
26AQI
8th January 2025
33AQI
9th January 2025
23AQI
10th January 2025
26AQI
11th January 2025
22AQI
12th January 2025
23AQI
13th January 2025
23AQI
14th January 2025
24AQI
15th January 2025
22AQI
16th January 2025
22AQI
17th January 2025
24AQI
18th January 2025
27AQI
19th January 2025
26AQI
20th January 2025
27AQI
21st January 2025
26AQI
22nd January 2025
27AQI
23rd January 2025
27AQI
24th January 2025
27AQI
25th January 2025
32AQI
26th January 2025
30AQI
27th January 2025
32AQI
28th January 2025
39AQI
29th January 2025
42AQI
30th January 2025
28AQI
31st January 2025
25AQI
1st February 2025
23AQI
2nd February 2025
21AQI
3rd February 2025
28AQI
4th February 2025
32AQI
5th February 2025
33AQI
6th February 2025
33AQI
7th February 2025
35AQI
8th February 2025
34AQI
9th February 2025
43AQI
10th February 2025
41AQI
11th February 2025
31AQI
12th February 2025
26AQI
13th February 2025
24AQI
14th February 2025
26AQI
15th February 2025
28AQI
16th February 2025
31AQI
17th February 2025
30AQI
18th February 2025
28AQI
19th February 2025
29AQI
20th February 2025
29AQI
21st February 2025
32AQI
22nd February 2025
49AQI
23rd February 2025
56AQI
24th February 2025
73AQI
25th February 2025
81AQI
26th February 2025
79AQI
27th February 2025
52AQI
28th February 2025
48AQI
1st March 2025
37AQI
2nd March 2025
30AQI
3rd March 2025
26AQI
4th March 2025
26AQI
5th March 2025
24AQI
6th March 2025
25AQI
7th March 2025
27AQI
8th March 2025
46AQI
9th March 2025
34AQI
10th March 2025
35AQI
11th March 2025
33AQI
12th March 2025
33AQI
13th March 2025
28AQI
14th March 2025
25AQI
15th March 2025
20AQI
16th March 2025
20AQI
17th March 2025
22AQI
18th March 2025
19AQI
19th March 2025
21AQI
20th March 2025
25AQI
21st March 2025
31AQI
22nd March 2025
32AQI
23rd March 2025
31AQI
24th March 2025
38AQI
25th March 2025
54AQI
26th March 2025
45AQI
27th March 2025
35AQI
28th March 2025
41AQI
29th March 2025
52AQI
30th March 2025
52AQI
31st March 2025
52AQI
1st April 2025
46AQI
2nd April 2025
36AQI
3rd April 2025
33AQI
4th April 2025
29AQI
5th April 2025
24AQI
6th April 2025
22AQI
7th April 2025
22AQI
8th April 2025
22AQI
9th April 2025
20AQI
10th April 2025
18AQI
11th April 2025
19AQI
12th April 2025
20AQI
13th April 2025
20AQI
14th April 2025
31AQI
15th April 2025
34AQI
16th April 2025
30AQI
17th April 2025
31AQI
18th April 2025
33AQI
19th April 2025
41AQI
20th April 2025
22AQI
21st April 2025
19AQI
22nd April 2025
20AQI
23rd April 2025
22AQI
24th April 2025
18AQI
25th April 2025
20AQI
26th April 2025
17AQI
27th April 2025
18AQI
28th April 2025
21AQI
29th April 2025
18AQI
30th April 2025
20AQI
1st May 2025
18AQI
2nd May 2025
18AQI
3rd May 2025
15AQI
4th May 2025
15AQI
5th May 2025
15AQI
6th May 2025
15AQI
7th May 2025
16AQI
8th May 2025
16AQI
9th May 2025
19AQI
10th May 2025
19AQI
11th May 2025
19AQI
12th May 2025
20AQI
13th May 2025
26AQI
14th May 2025
19AQI
15th May 2025
18AQI
16th May 2025
20AQI
17th May 2025
17AQI
18th May 2025
20AQI
19th May 2025
21AQI
20th May 2025
20AQI
21st May 2025
15AQI
22nd May 2025
25AQI
23rd May 2025
22AQI
24th May 2025
18AQI
25th May 2025
17AQI
26th May 2025
22AQI
27th May 2025
22AQI
28th May 2025
24AQI
29th May 2025
27AQI
30th May 2025
30AQI
31st May 2025
21AQI
1st June 2025
17AQI
2nd June 2025
21AQI
3rd June 2025
23AQI
4th June 2025
24AQI
5th June 2025
29AQI
6th June 2025
26AQI
7th June 2025
21AQI
8th June 2025
19AQI
9th June 2025
21AQI
10th June 2025
21AQI
11th June 2025
28AQI
12th June 2025
35AQI
13th June 2025
27AQI
14th June 2025
23AQI
15th June 2025
22AQI
16th June 2025
26AQI
17th June 2025
33AQI
18th June 2025
29AQI
19th June 2025
23AQI
20th June 2025
20AQI
21st June 2025
19AQI
22nd June 2025
17AQI
23rd June 2025
21AQI
24th June 2025
22AQI
25th June 2025
19AQI
26th June 2025
17AQI
27th June 2025
19AQI
28th June 2025
20AQI
29th June 2025
19AQI
30th June 2025
17AQI
1st July 2025
17AQI
2nd July 2025
18AQI
3rd July 2025
18AQI
4th July 2025
16AQI
5th July 2025
17AQI
6th July 2025
18AQI
7th July 2025
20AQI
8th July 2025
20AQI
9th July 2025
19AQI
10th July 2025
20AQI
11th July 2025
22AQI
12th July 2025
29AQI
13th July 2025
33AQI
14th July 2025
35AQI
15th July 2025
47AQI
16th July 2025
46AQI
17th July 2025
40AQI
18th July 2025
31AQI
19th July 2025
32AQI
20th July 2025
32AQI
21st July 2025
36AQI
22nd July 2025
38AQI
23rd July 2025
46AQI
24th July 2025
51AQI
25th July 2025
54AQI
26th July 2025
55AQI
27th July 2025
52AQI
28th July 2025
44AQI
29th July 2025
42AQI
30th July 2025
48AQI
31st July 2025
51AQI
1st August 2025
42AQI
2nd August 2025
28AQI
3rd August 2025
27AQI
4th August 2025
30AQI
5th August 2025
25AQI
6th August 2025
23AQI
7th August 2025
20AQI
8th August 2025
20AQI
9th August 2025
26AQI
10th August 2025
23AQI
11th August 2025
19AQI
12th August 2025
16AQI
13th August 2025
15AQI
14th August 2025
19AQI
15th August 2025
23AQI
16th August 2025
18AQI
17th August 2025
13AQI
18th August 2025
13AQI
19th August 2025
13AQI
20th August 2025
12AQI
21st August 2025
12AQI
22nd August 2025
13AQI
23rd August 2025
13AQI
24th August 2025
13AQI
25th August 2025
12AQI
26th August 2025
12AQI
27th August 2025
14AQI
28th August 2025
14AQI
29th August 2025
17AQI
30th August 2025
18AQI
31st August 2025
17AQI
1st September 2025
16AQI
2nd September 2025
19AQI
3rd September 2025
19AQI
4th September 2025
22AQI
5th September 2025
23AQI
6th September 2025
30AQI
7th September 2025
39AQI
8th September 2025
42AQI
9th September 2025
37AQI
10th September 2025
38AQI
11th September 2025
35AQI
12th September 2025
26AQI
13th September 2025
23AQI
14th September 2025
21AQI
15th September 2025
25AQI
16th September 2025
21AQI
17th September 2025
18AQI
18th September 2025
16AQI
19th September 2025
16AQI
20th September 2025
17AQI
21st September 2025
31AQI
22nd September 2025
24AQI
23rd September 2025
15AQI
24th September 2025
12AQI
25th September 2025
15AQI
26th September 2025
15AQI
27th September 2025
11AQI
28th September 2025
13AQI
29th September 2025
21AQI
30th September 2025
23AQI
1st October 2025
31AQI
2nd October 2025
47AQI
3rd October 2025
40AQI
4th October 2025
47AQI
5th October 2025
51AQI
6th October 2025
38AQI
7th October 2025
39AQI
8th October 2025
47AQI
9th October 2025
39AQI
10th October 2025
30AQI
11th October 2025
27AQI
12th October 2025
21AQI
13th October 2025
21AQI
14th October 2025
29AQI
15th October 2025
36AQI
16th October 2025
35AQI
17th October 2025
38AQI
18th October 2025
52AQI
19th October 2025
39AQI
20th October 2025
30AQI
21st October 2025
34AQI
22nd October 2025
32AQI
23rd October 2025
39AQI
24th October 2025
40AQI
25th October 2025
50AQI
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

27AQI

38AQI

33AQI

25AQI

20AQI

23AQI

34AQI

19AQI

23AQI

37AQI

No. of days

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

202527AQI

31
23
5
27
4
30
31
30
26
5
31
30
23
2
282
16

Highest AQI recorded in

February

38AQI

Lowest AQI recorded in

August

19AQI

202429AQI

31
29
30
1
29
1
24
7
29
1
31
31
26
4
31
30
31
352
14

Highest AQI recorded in

May

38AQI

Lowest AQI recorded in

October

21AQI

202329AQI

31
26
2
31
27
3
29
2
26
4
31
30
1
27
3
31
29
31
349
15

Highest AQI recorded in

April

41AQI

Lowest AQI recorded in

October

20AQI

202230AQI

20
1
19
3
24
7
28
2
31
28
2
23
2
1
28
29
2
30
25
5
286
24

Highest AQI recorded in

March

41AQI

Lowest AQI recorded in

August

20AQI

202131AQI

30
1
27
1
30
1
29
1
30
1
26
4
27
4
31
30
26
5
27
3
30
1
343
22

Highest AQI recorded in

June

40AQI

Lowest AQI recorded in

September

25AQI

202028AQI

13
21
18
30
31
31
25
5
27
4
30
31
257
9

Highest AQI recorded in

June

34AQI

Lowest AQI recorded in

November

24AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
31AQI
Least Polluted Year Recorded
2025(Avg.)
27AQI

Helsinki's annual 2025 AQI (27) shows an average percentage change of -6.2% (improved AQI) compared to previous years: 2020 (28), 2021 (31), 2022 (30), 2023 (29), 2024 (29).