Finland AQI Analytics
OpenAQ-derived PM2.5 and PM10 history for 22 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.
Search city analytics
- Cities
- 22
- Locations
- 63
- Daily rows
- 6,996
- Avg EPA AQI
- 19
with OpenAQ history
mapped monitors
2024-01-01 to 2024-12-31
4.7 ug/m3 PM2.5
Current data story
The highest average AQI in this pilot slice is Helsinki, with an EPA AQI average of 31 and PM2.5 around 5.8 ug/m3. Its worst month is May.
Source: OpenAQ local parquet plus raw CSV coordinate recovery. Build 2026-05-12T00:27:56.105574+00:00.
Country average
19
US EPA scale
PM2.5 4.7 ug/m3 · PM10 10.2 ug/m3
Analytics tools
City AQI Comparison
LiveRank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI.
22 eligible cities
Open toolSeasonal Pollution
LiveFind each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
22 eligible cities
Open toolHealth Impact
LiveTranslate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
15 eligible cities
Open toolCities ranked by average AQI
| City | Avg AQI | PM2.5 | Worst month | Trend | Coverage |
|---|---|---|---|---|---|
| Helsinki Uusimaa, Finland | 31 | 5.8 ug/m3 | May | n/a | 350 days · 3 locations |
| Pori Satakunta, Finland | 31 | 6.1 ug/m3 | March | n/a | 308 days · 2 locations |
| Kauniainen Uusimaa, Finland | 29 | 5.5 ug/m3 | March | n/a | 331 days · 1 locations |
| Vantaa Uusimaa, Finland | 27 | 5.2 ug/m3 | March | n/a | 346 days · 2 locations |
| Lappeenranta Etelä-Karjala, Finland | 26 | 4.8 ug/m3 | May | n/a | 331 days · 2 locations |
| Jyväskylä Keski-Suomi, Finland | 25 | 4.8 ug/m3 | May | n/a | 306 days · 2 locations |
| Lohja Uusimaa, Finland | 24 | 4.6 ug/m3 | January | n/a | 311 days · 2 locations |
| Lahti Päijät-Häme, Finland | 24 | 4.5 ug/m3 | April | n/a | 345 days · 3 locations |
| Kuopio Pohjois-Savo, Finland | 23 | 4.7 ug/m3 | April | n/a | 346 days · 10 locations |
| Tampere Pirkanmaa, Finland | 23 | 4.2 ug/m3 | May | n/a | 341 days · 2 locations |
| Oulu Pohjois-Pohjanmaa, Finland | 23 | 4.2 ug/m3 | August | n/a | 346 days · 3 locations |
| Tampere Uusimaa, Finland | 22 | 4.2 ug/m3 | May | n/a | 342 days · 3 locations |
| Klaukkala Uusimaa, Finland | 21 | 3.9 ug/m3 | May | n/a | 331 days · 2 locations |
| Hamina Kymenlaakso, Finland | 19 | 3.6 ug/m3 | August | n/a | 221 days · 2 locations |
| Vaasa Pohjanmaa, Finland | 10 | 4.6 ug/m3 | June | n/a | 329 days · 4 locations |
| Kokkola Keski-Pohjanmaa, Finland | 10 | n/a ug/m3 | May | n/a | 147 days · 1 locations |
| Kouvola Kymenlaakso, Finland | 9 | n/a ug/m3 | March | n/a | 305 days · 2 locations |
| Naantali Varsinais-Suomi, Finland | 9 | n/a ug/m3 | March | n/a | 307 days · 2 locations |
| Imatra Etelä-Karjala, Finland | 9 | n/a ug/m3 | September | n/a | 345 days · 4 locations |
| Ulvila Satakunta, Finland | 7 | n/a ug/m3 | May | n/a | 349 days · 6 locations |
| Raahe Pohjois-Pohjanmaa, Finland | 7 | n/a ug/m3 | May | n/a | 330 days · 4 locations |
| Joutseno Etelä-Karjala, Finland | 6 | n/a ug/m3 | May | n/a | 329 days · 1 locations |