What is the air quality in Lahti today?

The current Air Quality Index (AQI) in Lahti is 18 (Good). PM2.5 concentration is 4.35 µg/m³.

What is the temperature in Lahti right now?

The current temperature in Lahti is 6.3°C (feels like 2.7°C). Humidity is 96.9% and wind speed is 20.3 km/h.

Is it safe to go outside in Lahti?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Lahti, Finland

Overcast

6.3°C · 96.9% humidity

6.3°

Feels 2.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Station readings 4h ago

AQI 17

PM2.5 4.1 µg/m³ · 4h ago

Air Quality Index Trend

19h · 2 stn

View full history →

Lahti's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

96.9%

Humidity

20.3 km/h

Wind SE

1034.0 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.35 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Lahti?

Temperature & Precipitation

PM2.5 Trend

19h · 2 stations

PM2.54.35 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

4.35

Median

4.35

Average

4.35

Low

4.35

High

PM2.5 µg/m³ · Model: 6.5 · Bias: +2.2

What is the 7-day forecast for Lahti?

10-21

9.6° 0.3°

2.44 mm

10-22

14.9° 4.9°

0.5 mm

10-23

7.3° 4.4°

2.44 mm

10-24

9.1° 5.0°

10-25

6.7° 1.4°

1.25 mm

10-26

5.9° 2.5°

10-27

7.5° -2.3°

2.06 mm

Both models agree Avg diff: 3.7°C

Where are air quality stations near Lahti?

Lahti Satulakatu

3.8 km PM2.5: 5.4 µg/m³ PM10: 7.6 µg/m³

What cities are near Lahti?

18 Hollola 18 Hollola 18 Orimattila 19 Heinola 10 Mäntsälä 34 Riihimäki 21 Kouvola 10 Hyvinge 17 Janakkala 10 Järvenpää

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T03:08 UTC.