Cheyenne air quality exceeded the WHO annual limits on more than one-of third of the days from 2020 to 2021. Due to wildfire smoke from wildfires out west, Cheyenne air quality more than 3 times the daily recommended limit of dangerous PM 2.5 pollutants on its worse day in 2020 and more than 2 times in 2021.
Current Air Quality in Cheyenne
12% Of Days in Cheyenne More Polluted Than WHO Target
Cheyenne’s daily air quality levels exceeded the World Health Organization (WHO) annual limit on 12% of days in 2020-2021. The PM2.5 AQI went beyond the limit on most days in many areas of the city between July and October due to wildfire smoke.
Historical Air Quality Readings for Cheyenne
Is Cheyenne Air Quality Improving?
Over the last three years, data shows that air quality in Cheyenne had worsened. Despite the drop in average annual PM2.5 levels in 2021, there was still a 12% increase from 2019 to 2021. While Cheyenne’s annual level of air pollution now remains below the WHO recommended limit, the increasing trend is still a concern.
Why Is the Air Quality Bad Today in Cheyenne?
Weather plays a big role in how the air quality is in Cheyenne each day. The amount of sun can affect how much ozone there is, and wind and rain can affect PM2.5 and particulate air pollution to varying degrees.
Air pollution levels can change quickly, with levels often varying widely throughout the day. Data shows there even appears to be times of the day where air pollution tends to be lower compared to other times.
Below shows how PM2.5 air quality levels around the world tend to vary throughout the day. PM2.5 levels have a tendency to be slightly lower in the afternoon compared to other times of the day. But this is a general trend, Cheyenne PM2.5 AQI levels will not follow this trend every day.
How Wildfires Out West Affect Cheyenne’s Air Pollution Levels
Outside of weather, wildfires are another factor that can significantly affect Cheyenne’s air quality. The worst wildfires typically occur in the months of June to September. Wildfire smoke from California and Oregon can and has travelled all the way to cities as far Cheyenne.
Below shows how wildfires in September of 2020 affected air quality levels all across the west coast.
Cheyenne Air Pollution: The Negative Health Effects
Studies have shown that PM2.5 raises blood pressure, inflammation, and rates of heart attacks and strokes.
WATCH: Why Is PM2.5 So Harmful to Us?
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Protect Your Health in Cheyenne From Air Pollution and Wildfire Smoke
Despite the harms of PM2.5 that is in wildfire smoke and air pollution, placebo-controlled studies of air purifiers have found that removing particulate in the home has positive effects on blood pressure, inflammation, and immune response.
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