Canadian wildfires are spreading smoke across parts of the US, causing concerns about the air quality and risks to health.
Understanding the risks: Wildfire smoke contains particulate matter (PM), tiny solid and liquid droplets that can be harmful to human health.
* Larger particulate matter (PM 10) can irritate eyes, nose, and throat, while smaller particulate matter (PM 2.5) can affect deeper parts of the lungs and blood.
The Air Quality Index (AQI): The AQI is a measurement system used by the Environmental Protection Agency that rates air quality on a scale from zero to 500, with lower numbers indicating better air quality.
* The scale is color-coded for easier understanding: green (0-50) is good, yellow (51-100) is moderate, orange (101-150) is unhealthy for certain groups, red (151-200) is unhealthy, purple (201-300) is very unhealthy, and maroon (301 and above) is hazardous.
Staying safe: To reduce exposure to wildfire smoke, experts recommend staying indoors, wearing an N95 or a similar respirator outside, and limiting strenuous activity.
* People can monitor air quality, use high-quality air filters in their homes, and seal openings in doors and windows to minimize wildfire smoke impact.
* Pets should also be kept indoors, hydrated, and occupied with indoor activities to protect them from the adverse effects of wildfire smoke.
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