Dense fog reduced visibility to near zero in Mount Pearl on Tuesday, July 28, 2026, as a wet weather system moved across eastern Newfoundland, according to Environment Canada. Drivers faced hazardous conditions on area roads, and residents were told to expect more rain and a risk of thunderstorms through Wednesday before conditions clear up on Thursday.
As of midday Tuesday, visibility at St. John’s International Airport, the nearest weather station, was just 0.2 km in fog. The humidity sat at 100 percent and the temperature was 14.1 C, with winds from the east-southeast at 21 km/h. Environment Canada’s forecast called for periods of rain or drizzle, with 5 to 10 mm of precipitation and wind gusts reaching 40 km/h. A risk of thunderstorms was also in the outlook for Tuesday afternoon.
Wednesday will bring periods of drizzle before ending in the afternoon, with fog patches dissipating in the morning. By Thursday, conditions are expected to improve significantly, with a mix of sun and cloud and temperatures reaching 20 C. The weather office notes that July is the peak of the Atlantic fog season, and Mount Pearl, sitting on the Avalon Peninsula near the fog-prone Grand Banks, is no stranger to such events. The Grand Banks see about 206 foggy days a year due to the meeting of the cold Labrador Current and warm Gulf Stream.
Residents who must travel during fog are reminded to use low-beam headlights, as high beams reflect off moisture and make it harder to see. Environment Canada advises avoiding travel when visibility is poor. On average, fog plays a major role in 53 fatal road crashes in Canada each year.
Once the fog lifts, Mount Pearl can look forward to more typical summer sunshine. The city normally gets about 199 hours of sun in July and tends to be two to three degrees warmer than St. John’s. For now, anyone with outdoor plans may want to wait until Thursday, when the skies are expected to brighten.
