ecowittweather

What is PM2.5 PM2.5 refers to atmospheric particulate matter (PM) that have a diameter of less than 2.5 micrometers, which is about 3% the diameter of a human hair. PM2.5 is also known as fine particulate matter  (2.5 micrometres is one 400th of a millimetre). Where Do PM2.5 Come From There are outdoor and indoor sources of fine particles. Outside, fine particles primarily come from car, truck, bus and off-road vehicle (e.g., construction equipment, snowmobile, locomotive) exhausts, other operations that involve the burning of fuels such as wood, heating oil or coal and natural sources such as forest and grass fires. Fine particles also form from the reaction of gases or droplets in the atmosphere from sources such as power plants. These chemical reactions can occur miles from the original source of the emissions. Fine particles can be carried long distances from their source, events such as wildfires or volcanic eruptions can raise fine particle concentrations hundred...

What is humidity? What's the difference between absolute and relative humidity? What you need to know about home humidity? Humidity is the amount of water vapor in the air. Too much or too little humidity can be dangerous. For example, high humidity combined with hot temperatures is a combination that can be a health risk, especially for the very young and the very old. Humidity plays an important role in our daily weather. Without water vapor in the air, our weather might be like the weather on Mars. Could you imagine life without clouds, rain, snow, thunder, or lightning? When you hear weather forecasters talk about humidity, you may hear them talk about two different terms: absolute humidity and relative humidity. Absolute humidity is the amount of water vapor divided by the amount of dry air in a certain volume of air at a particular temperature. The hotter the air is, the more water vapor it can hold. Relative humidity is the ratio of the current absolute hu...

Hello, everyone! Ecowitt is a professional manufacturer and supplier on weather instruments.  We provides professional wifi weather station, wireless indoor outdoor thermometers, humidity monitors, high precision rain gauges, air quality monitors and more. Why choose us? ❥ Innovative Product Ideas    With a passion for innovation and customer satisfaction, we're constantly improving upon our products and operations to deliver the best experience to our valued customers. ❥ Professional Tech Team    With over 20 engineers, we have a professional and active tech team for the new products developing and tech support for all the products. ❥ Reliable Quality with Reasonable Price    All products will be tested with strict rules before shipping by our professinal QA team. ❥ Excellent Customer Service    Our goal is to make every customers 100% satisfied. If you have any question, just email us at ecowittweather@outlook...