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UNHEALTHY FOR ALL<br />
55 - 150 µg/m3<br />
Particle Matter Levels<br />
Good 0 - 10 µg/m3<br />
Moderate 10 - 25 µg/m3<br />
Unhealthy For Sensative 25 - 55<br />
µg/m3<br />
Unhealthy 55 - 150 µg/m3<br />
Very Unhealthy<br />
150 - 250 µg/m3<br />
Hazardous 250 < µg/m3<br />
Perception Rating<br />
Good<br />
Moderate<br />
Poor<br />
Hazardous<br />
Very Unhealthy<br />
Unhealthy for All<br />
Unhealthy for Sensative
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