Today, the sky in our city is dominated by thick clouds all day, and there is some fog, with a minimum visibility of 1-3km in the morning and a local level below 1km to reach the standard of fog. The main city starts at 15.4 °C in the morning, and the maximum temperature stops at 21.3 °C, such a temperature is still quite comfortable, but in the morning and evening, you must remember to add clothes to prevent colds!
Minimum visibility from 20:00 on the 26th to 15:00 on the 27th
In the next seven days, most of the time in our city will be cloudy weather, light rain will occasionally come out to make a lively, mainly appear in the night of the 29th to the morning of the 30th, 2 to 3rd, but it does not affect travel; the temperature is generally more stable, slightly cooler in the morning and evening, the minimum temperature is 11 ~ 14 ° C; the maximum temperature is 19 ~ 23 ° C.
So it seems that the back is all good weather? Not exactly!
From tomorrow to the 30th, there will be static weather in the central and southern parts of North China and the central and eastern parts of Huanghuai, with light to moderate haze in some areas and severe haze in the local area. And our east China wind is weaker, the diffusion conditions of air pollutants will also deteriorate, air quality has declined, but in the next few days is mainly weak northeast wind, imported pollutants are not too obvious, tomorrow the air quality is expected to be good to mild pollution, the day after tomorrow and back to the good level.
Prediction chart of PM2.5 concentration change from 20:00 on the 27th to 20:00 on the 30th
In autumn and winter, fog and haze are often frequent, and the word "calm" weather also frequently appears in the public eye.
So what does calm weather mean? Static weather usually refers to a kind of underlying atmospheric characteristics with small wind speed and stable atmosphere near the ground, and the atmosphere is continuously static and prone to form smog weather. If the atmospheric junction is relatively stable and the height of the mixed layer is reduced, it will form a static weather, resulting in no obvious diffusion in the horizontal and vertical directions, and water vapor and pollutants accumulate in the near strata.
Ground flow field map at 14:00 on the 27th
What is the relationship between calm weather and fog and haze? Static weather is one of the important conditions for the formation of fog and haze. In autumn and winter, due to the obvious radiation cooling of the ground at night, the "inversion layer" is prone to appear in the low altitude of the atmosphere, the horizontal and vertical exchange and circulation capacity of the air becomes weaker, and the pollutants emitted in the air are limited in the shallow atmosphere and gradually accumulate. From a meteorological point of view, fog often means that the atmosphere is relatively stable, and the stable atmosphere is easy to accumulate pollutants.
So the weather in the next few days is generally good, but the air quality is not particularly good, some periods will reach mild pollution, the morning may also produce local fog weather, go out to pay attention to driving safety, sensitive people according to air quality changes to adjust going out, exercise time, wear anti-smog masks.
Weather forecast for the city
It is cloudy and sometimes cloudy from evening to night; it is cloudy tomorrow; it is cloudy and cloudy the day after tomorrow, and there is light rain around midnight. Today the northeast wind is 3 degrees. Tomorrow the maximum daytime temperature is 21 degrees, and tomorrow morning the minimum temperature is 14 degrees. The average relative humidity tomorrow is 70%. 15:30 on October 27, 2021
Today's temperature: 15.4 ~ 21.3 °C
Tomorrow sunrise and sunset time:
Sunrise: 6:10 Sunset: 17:15
Weather trend forecast
28 (Thu): Cloudy, 14~21°C, northeast wind level 3;
29th (Friday): cloudy and cloudy, there is light rain around midnight, 14 ~ 22 ° C, northeast wind level 3;
30th (Saturday): Cloudy local light rain turned cloudy, 12 ~ 22 °C, northeast wind level 3;
31st (Sun): Cloudy, 12~21°C, easterly wind 3;
1st (Monday): cloudy to cloudy, local light rain, 12 ~ 21 °C, northeast wind level 3;
2nd (Tuesday): cloudy to cloudy, occasional light rain, 13~19°C, northerly wind 3~4;
3rd (Wednesday): Cloudy to light rain, 9 ~ 20 ° C, north wind level 3.
Hangzhou Meteorological Observatory released at 15:00 on October 27
Living Index Forecast
Air quality forecasting
Tomorrow hangzhou city AQI: 85 to 105, primary pollutants: PM2.5, air quality rating: good to mild pollution.
Human Health Index
Tomorrow is easy to induce gastroenteritis, dermatitis and colds.
Dressing index
Tomorrow level 5, suitable for wearing spring and autumn clothes.
Tide forecasting