PM2.5 Daily Calendar
Showing a six-month window starting Jan 1, 2025.
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Baltimore
Air Quality Dashboard
Historical Data
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FAQ
Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous
Good
0-9.0
Moderate
9.1-35.4
Unhealthy for Sensitive Groups
35.5-55.4
Unhealthy
55.5-125.4
Very Unhealthy
125.5-225.4
Hazardous
225.5-260
January 2025 — June 2025
January 2025
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February 2025
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March 2025
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April 2025
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May 2025
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June 2025
Su
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1/1/2025
—
6/30/2025
Jan 1, 2025–Jun 30, 2025