It will be months before the NTSB completes the full investigation. Without passing judgment on this accident, some general comments about night, weather-related decision making, and passenger perception are in order, even if the probable cause turns out to be something other than the pundits' guesses. East Coast pilots contend with haze from May through September. Moist air bakes in the summer sun and mixes with natural and man-made pollution. Bermuda high-pressure systems are a frequent summer visitor.
Nothing changes much from day to day, except that the haze gets thicker.
Hazy conditions can last for two weeks or longer. A gruel of dust particles and pollution causes water droplets to condense more readily than they would in cleaner air. The Atlantic Ocean only increases the moisture supply. Dewpoint is another critical factor, as every private pilot knows. Because it can drastically diminish visibility and turn a simple flight into a fatal one.