Fine Particulate Matter (PM2.5)
Fine particulate matter smaller than 2.5 micrometers. These microscopic particles penetrate deep into the lungs and can enter the bloodstream, making PM2.5 the most dangerous common air pollutant.
Regulatory Limits (µg/m³)
WHO Guideline
5
Most protective standard
EU 2030 Target
10
Directive 2024/2881
EU Current Limit
25
Being replaced in 2030
209 out of 688 tracked European cities currently exceed the EU 2030 PM2.5 target.
Where Does PM2.5 Come From?
- •Vehicle exhaust (especially diesel)
- •Residential heating (wood and coal burning)
- •Industrial processes
- •Construction and road dust
- •Agricultural burning
- •Wildfire smoke
Health Effects of PM2.5
Short-Term Exposure
- •Irritation of eyes, nose, and throat
- •Coughing and difficulty breathing
- •Aggravated asthma symptoms
- •Irregular heartbeat in susceptible people
Long-Term Exposure
- •Reduced lung function and chronic respiratory disease
- •Increased risk of heart attack and stroke
- •Increased lung cancer risk
- •Premature death — 182,000 deaths in the EU (Source: EEA, Air Quality in Europe 2023 report)
How to Protect Yourself
- 1.Use HEPA air purifiers indoors (removes 99.97% of particles)
- 2.Wear FFP2/N95 masks when outdoor PM2.5 is high
- 3.Check daily air quality before outdoor exercise
- 4.Keep windows closed during high-pollution periods
- 5.Avoid exercising near busy roads
Highest PM2.5 Levels in Europe
| # | City | Country | PM2.5 | AQI |
|---|---|---|---|---|
| 1 | Worthing | United Kingdom | 42.5 | 43 |
| 2 | Medway | United Kingdom | 33.6 | 34 |
| 3 | Wien | Austria | 33.4 | 33 |
| 4 | Carlisle | United Kingdom | 33.0 | 33 |
| 5 | Halle an der Saale | Germany | 30.3 | 30 |
| 6 | Leeds | United Kingdom | 30.1 | 30 |
| 7 | Sheffield | United Kingdom | 30.0 | 30 |
| 8 | Wroclaw | Poland | 26.5 | 27 |
| 9 | Siedlce | Poland | 25.5 | 26 |
| 10 | Slavonski Brod | Croatia | 25.2 | 25 |
| 11 | Ioannina | Greece | 24.5 | 25 |
| 12 | Plymouth | United Kingdom | 22.6 | 23 |
| 13 | Padova | Italy | 22.3 | 22 |
| 14 | Piotrków Trybunalski | Poland | 21.5 | 22 |
| 15 | Gliwice | Poland | 21.2 | 21 |