The highest AQ index in Maryland (as of 13:00 EST) is currently the Hagerstown Region area. Particle Pollution (PM2.5) is measuring at 88 (Moderate). This means air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Over the next few days, the highest Particle Pollution (PM2.5) will be in the Metro Baltimore area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Happy New Year! The first full week of January started with inverted surface conditions and elevated fine particle concentrations for Monday, January 5th. Expect similar conditions on Tuesday, as continued warm air aloft moving over the region will cap the surface, along with light surface winds, mitigating dispersion of pollutants and resulting in Moderate AQI due to fine particles for most areas of the state. Higher mountain peaks may poke above the inversion to escape the highest concentrations, but valleys and lower elevations will remain vulnerable to pollution buildup, particularly where wood burning is prevalent. The atmosphere will again be inverted initially on Wednesday morning. As such, fine particle concentrations will be elevated to start. Despite cleaner conditions arriving later in the day behind a passing cold front and increasing wind speeds, daily average exposure will be driven by the higher morning concentrations, resulting in another day of Moderate AQI. Assuming enough cleanout occurs on Wednesday afternoon, Good AQI conditions may return for Thursday, despite a quick change to high pressure and diminishing wind speeds. For the latest air quality information, please visit our website here. -MDE
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
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| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 7 minutes ago
Below is a list of counties in Maryland. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.