Smoke began moving into northwest Colorado on Friday afternoon. Northwestern and north-central Colorado are waking up to smoky conditions this weekend. This smoke is expected to continue through Sunday morning.
An Air Quality Health Advisory remains in effect for northwestern and north-central Colorado until Sunday morning. This advisory was issued on Friday afternoon for Moffat, Routt, Jackson, and Grand Counties. As of Saturday morning, this advisory has been updated to include three more counties: Clear Creek, Gilpin, and Summit. Moderate to heavy smoke is possible throughout the advisory area on Saturday and Sunday.
Changes are coming on Sunday. Today, upper-level winds are coming from the northwest, where the smoke is heavy. On Sunday, these upper-level winds are expected to shift to westerly (coming from the west), where the air is cleaner. A shift to westerly winds would bring cleaner air into northwest Colorado. Particulate Matter concentrations are expected to drop throughout the day on Sunday. Until then, in the advisory area, it's a good idea to take steps to protect your health. For the latest air quality information, visit CDPHE's monitoring website or PurpleAir.
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