Finland · The summary is refreshed every 15 minutes.
November 12
The air is moderate now
Measured 22:00–23:57
Vantaa
4°C
Cloudy
999
hPaAtmospheric
pressure
93%
Humidity
Vantaa, November 10, 2026: daily mean PM2.5 9 µg/m³ (7 sensors), level “Moderate” — as in the Atmy Data Hub. Now (00:00 local time): 23.3 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON
Right now in Vantaa, PM2.5 averages 23.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 7 sensors from Government stations, Sensor.Community, readings from 22:00–23:57 local time (20:00–21:57 UTC), summary prepared at 00:00 local time. Median: 18.0 µg/m³; range across sensors: 11.8–43.5 µg/m³.
In Vantaa the air is moderate 🟡 AQI 77. About the same as three hours ago. ☁️ +4 °C · No precipitation · Wind 3 m/s
In Vantaa the air is moderate right now (approximate, US EPA scale). From 11:00 to 00:00 local time the city mean PM2.5 stayed roughly level: from 27.4 to 23.3 µg/m³. The highest hour was 22:00 with 38.7 µg/m³.
Cold weather (4°C) possibly means more heating, a common source of particles. High humidity (93%) possibly makes optical sensors read somewhat higher.
Weather now: cloudy, 4°C, wind 3 m/s, humidity 93%. By 07:00 the wind is expected to pick up to 5 m/s, which may clear the air. Precipitation is expected around 00:00; it may wash particles out. By 11:00 the temperature will be about 7°C.
Written automatically at 00:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.
3 m/s
Wind, SSE
4.2 mm
Precipitation today
9 µg/m³ Moderate
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 02:00–02:00 UTC+2): 9 µg/m³ from 7 sensors that passed the quality check — the same value as in the Atmy Data Hub.
Monthly means of quality-checked sensors, as in the Data Hub trend; the current month is still incomplete, “-” means no data.
28/100Low · An estimate of weather conditions · not a PM2.5 forecast
7°/4°
Index by time of day
32/100Low
Night
Morning
Day
Evening5°/3°
Index by time of day
35/100Moderate
NightMorningDayEvening3°/0°
Index by time of day
26/100Low
NightMorningDayEvening8°/1°
Index by time of day
39/100Moderate
NightMorningDayEvening7°/5°
Index by time of day
26/100Low
NightMorningDayEvening7°/5°
Index by time of day
34/100Low
NightMorningDayEveningForecast of conditions that trap pollution near the surface
4°
Cloudy. Feels like 1°C
6°C90%7°C90%5°C82%3m/sWind from the SSE
6m/sWind gusts
Wind force: 2
Gusts up to 8 m/s are expected.
Finland
7°C4°C5°C3°C3°C0°C8°C1°C7°C5°C7°C5°C7°C6°C7°C6°C6°C4°C
Highest current reading: 43.5 µg/m³ (SC #73517). Lowest: 11.8 µg/m³ (SC #68434). The list shows every sensor, highest first.
Source: atmy.ai monitoring network
Sensors in the summary by network: Government stations — 4 sensors, Sensor.Community — 3 sensors.
Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.
21
VantaaFinland
7EspooFinland
5TampereFinland
4Cities with the most sensors
All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.
Daily mean PM2.5 of the city sensors, µg/m³
Click a day to see its date and value.
An Atmy card with the air quality in Vantaa now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.
Finland · City ranking · All pilot cities
Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 02:00–02:00 UTC+2): 9 µg/m³ from 7 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 1 of 3 cities in Finland and No. 548 of 676 worldwide, from the most polluted.
Right now in Vantaa, PM2.5 averages 23.3 µg/m³ — “moderate” on the US EPA scale (approximate, from hourly readings). Mean of 7 sensors from Government stations, Sensor.Community, readings from 22:00–23:57 local time (20:00–21:57 UTC), summary prepared at 00:00 local time. Median: 18.0 µg/m³; range across sensors: 11.8–43.5 µg/m³.
The current level is “moderate” (US EPA scale, approximate). Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. This is the standard guidance of the scale, not medical advice.
Highest current reading: 43.5 µg/m³ (SC #73517). Lowest: 11.8 µg/m³ (SC #68434). The list shows every sensor, highest first.
From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.
The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.
The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.
“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.
Source: public Atmy monitoring data. Methodology and data sources · Data terms
