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  1. 8 de jun. de 2023 · The air is an eerie shade of orange and the visibility is low. Distant buildings that you would otherwise be able to see on a clear day are blotted out by the murky haze. But why is it orange...

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    • Overview
    • First, why is it getting worse?
    • So what can you do?

    Our photographer who has covered over 125 wildfires shares tips on how to prepare for smoke-filled skies—from the best masks to jury-rigging your own air filtration system.

    A lone ship travels on the East River in New York City on June 7, 2023. As winds blew smoke south from Canadian wildfires, much of the U.S. was enveloped a smoky toxic fog—which experts say we can expect to happen more often as the planet warms.

    As climate change drives an increase in wildfires, we’re seeing more smoke lofted into the upper atmosphere each fire season. Depending on wind and weather, this smoke can spread hundreds or thousands of miles from its source—as we saw in early June on the U.S. East Coast. 

    And we’re likely to continue seeing it increase in severity, frequency, and longevity as the planet warms. As a photographer who has photographed over 125 wildfires in California over the last decade, I’ve gleaned some helpful tips and best practices for how to reduce exposure to harmful air once it reaches a town near you.

    In the U.S., the 10 worst wildfire seasons for acres burned have all occurred since 2004. Records are set and then re-broken each year in acreage, homes destroyed, or lives lost. 

    (The science connecting wildfires to climate change.)

    An individual is powerless to change the weather or control where smoke goes, but there are things you can do to prepare and protect yourself from the worst of it.

    Monitor local AQI forecasts: A great starting point is Airnow.gov which gives helpful color-coded charts for varying degrees of smoke-filled air, known as the Air Quality Index, or AQI. This can help you understand the risks facing your local area.

    As a general rule, an AQI of 100 starts to become hazardous, with larger tranches of people becoming affected as the AQI increases. On June 7, for example, New York City exceeded 400 AQI in some boroughs, meaning hazardous air for just about everyone outside. People who are asthmatic like me may feel affected by AQI above 75. 

    (What the Air Quality Index measures—and how to interpret it.)

    If you have the luxury of an indoor job or remote work, staying inside gives you better control over the air environment. Those working outside should limit their physical activity, and while guidelines are being developed for outdoor air quality, some states like Washington even require workers to be provided with masks on extremely poor air days.

    Wear a NIOSH-approved N95 or better mask outdoors: The best mask should have two straps, one that goes above your ears, and the other below, for a better face seal to ensure you don’t suck in any smoke particles when you inhale. Popular for extended wear is the Envo mask series, which uses proprietary N95 replaceable filters, an adjustable elastic band, and gel for contact with the face.

  3. Looking up and seeing an orange sky can be interesting. Depending on the circumstances, it can even be alarming. If you’re wondering why the sky is orange, it may be due to one of these possible causes. Sunlight Is Traveling Further Than Normal. During the day, the sky generally looks blue.

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  5. 8 de jun. de 2023 · By Kenneth Chang. June 8, 2023. To understand how smoke from Canadian wildfires is turning skies in many places orange this week, it helps to first ask: Why is the sky usually blue? The...

  6. 16 de jun. de 2023 · June 16, 2023. 5 min read. Why Does Smoke Turn the Sky Orange? The wildfire smoke that smothered the U.S. Northeast last week has surprising connections to astrophysics—and to the historic search...