Code Purple Air Quality Alert Hits Montgomery County
Montgomery County, MDJul 17, 2026
Smoke from Canadian wildfires pushed air quality to Code Purple — the "very unhealthy" level — across the National Capital Region on Friday, July 17, 2026. Residents are advised to limit outdoor time, avoid strenuous activity, and keep windows closed.
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Source: Montgomery County, MD, “You Voice Matters: Keep the Ideas Coming!”, received Jul 17, 2026.
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This alert didn't include additional links. The primary source is the county email cited above.
Key dates
2026-07-17
effective — Code Purple air quality alert in effect
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