Saharan Air Layer (SAL) Calima & PM10 Optical Extinction View
Is Tenerife experiencing a Saharan dust storm (Calima) with PM10 exceeding health safety thresholds, or is optical atmospheric visibility clear: observed conditions are currently within the marginal band for field operations and visitor access as of 17:51 UTC.
| Quantity | Favorable | Caution | Stop / Closed |
|---|---|---|---|
| PM10 Particulate Concentration (Gobierno de Canarias) | PM10 <40 µg/m³ (Good to Moderate, clean Atlantic air) | PM10 50-150 µg/m³ (Unfavorable for sensitive groups, light/moderate Calima) | PM10 >150 µg/m³ (Very Unfavorable / Severe Calima episode, avoid outdoor exercise) |
| Atmospheric Optical Visibility (AEMET) | Visibility >15 km, brilliant clear horizons | Visibility 5-10 km, hazy horizons, mountain ridges faded | Visibility <3 km (dense dust haze, flight delays possible at regional airports) |
Thresholds represent published operating limits and safety parameters. They do not constitute official statutory dispatch or navigation permits.
Planning strenuous mountain hikes, trail runs, or outdoor cycling during a major Calima episode with PM10 >150 µg/m³, causing severe respiratory distress, eye inflammation, and ruined panoramic views shrouded in reddish-brown haze. Pre-verifying conditions through real-time telemetry prevents unnecessary travel commitments, non-refundable excursion fees, and exposure to adverse local weather.
Alternative routing: During intense Calima episodes, escape the dusty outdoor air by visiting climate-controlled indoor cultural landmarks in Santa Cruz, such as TEA Arts Space or the Palmetum conservatory.
- AEMET (Agencia Estatal de Meteorología)
- Synoptic pressure charts, radio-soundings, and mountain high-altitude weather models.
- Puertos del Estado / REDCOS
- Deepwater directional ocean buoys and astronomical coastal tidal harmonics.
- Cabildo de Tenerife & Carreteras
- Insular civil protection alerts, alpine road gate statuses, and trail access bulletins.
- Capitanía Marítima
- Harbor master maritime security advisories and vessel boarding restrictions.
What exactly is the 'Calima' in Tenerife?
Calima is a meteorological phenomenon where easterly winds blow fine sand and mineral dust from the Sahara desert over the Canary Islands, accompanied by warm, dry air and reduced visibility.
Is it safe to exercise outdoors during a Calima?
When PM10 levels exceed 50 µg/m³, health authorities advise avoiding strenuous outdoor exercise, particularly for children, elderly individuals, and those with respiratory or heart conditions.