# create a reference to a hash with @$times as keys and values:
my $times_href = { map { $_ => $_ } @$times };

# add the image tagging to the $icon elements:
$icons->{$_} = "<img src=\"$icons->{$_}\" alt=\"\" />" for ( keys %$icons );

print "<table>\n";
for my $dref ( $icons, $times_href, $conditions, $hilo, $temperatures ) {
    print "<tr>";
    print "<td>$dref->{$_}</td>" for ( @$times );
    print "</tr>\n";
}
print "</table>\n";