Fog forecasts in Pakistan during winter are moderately reliable for general conditions but less accurate for exact timing and density. Fog can form and clear unpredictably, especially in plains.
Understanding winter fog patterns
Winter fog is common in parts of Punjab and upper Sindh, particularly from December to February. Forecasts can usually indicate when foggy conditions are likely over a region, but predicting how dense it will be or exactly when it will appear or lift is more difficult.
Why fog is hard to predict
Fog formation depends on temperature, humidity, and wind conditions near the ground. Small changes in these factors can cause fog to develop quickly overnight or clear earlier than expected after sunrise.
Travel considerations during fog
- Check forecasts the night before and early morning
- Allow extra time for road and flight delays
- Avoid driving early morning if visibility is low
Even when fog is forecast, actual visibility can vary significantly across short distances.