Fog is most likely due to a combination of low winds and moist air. When humidity is high and surface cooling occurs overnight, the air near the ground becomes saturated and water droplets form, creating fog. If there’s little wind to mix the air and disperse the moisture, fog can persist into morning hours before temperatures rise and the sun warms the ground, burning it off. What to look for in your area
- Visibility: If you can’t see far ahead or through traffic lights clearly, fog is present.
- Temperature vs. dew point: Fog often forms when the air temperature is very close to the dew point.
- Wind: Light or calm winds favor fog formation; stronger winds usually help clear it faster.
- Weather advisories: Local forecasts or alerts (dense fog advisories, advisories for fog) indicate higher fog risk.
Tips for safe travel
- Slow down and use low-beam headlights (not high beams, which reflect off fog and reduce visibility).
- Increase following distance beyond typical dry-road recommendations.
- If fog is dense, consider delaying travel or using well-lit, reachable routes where visibility is better.
- Use fog lights or dehumidify the car interior to reduce window fogging.
If you’d like, share your city or region and I can summarize the latest local conditions and any active fog advisories for today.
