light fog

There is no such a supplement regulation ever saying that the relative humidity 70% shall be used to distinguish light fog and haze at any level of meteorological departments. Many haze weather events being recorded as light fog is purely due to misunderstanding.

历史上我国各级气象部门从来不存在以相对湿度70%界定轻雾与霾的补充规定，由于理解的问题，将大量霾记成了轻雾。

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The day was low-slung , steady rain, light fog, cool for August.

天很阴沉,霪雨, 薄雾, 还没出八月, 天太凉了一点儿.

英汉文学 - 廊桥遗梦

At night, cold spring drift the light fog.

初春乍寒,夜里漂起淡淡雾气.

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Light fog and haze have rather large proportion in AOD, and the contribution of fog is larger than that of haze.

轻雾和霾光学厚度在青岛气溶胶光学厚度中占有较大比重，轻雾的贡献又比霾大；

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As they talked on, the evening turned blue, light fog brushing the meadow grass.

他们谈着谈着, 夜色变蓝了, 薄雾擦过牧场的草.

英汉文学 - 廊桥遗梦