The highest AQ index in Maryland (as of 16:00 EDT) is currently the Northern Baltimore area. Particle Pollution (PM2.5) is measuring at 68 (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 Hagerstown Region 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.
A low pressure and associated frontal boundary will move through the state Tuesday afternoon. General clouds coverage along with showers and thunderstorms will help to keep ozone levels in the Good AQI range across the state. Fine particulates however may be slightly elevated, particularly during the morning hours as diffuse smoke from Pacific Northwest fires impact the region. Although the bulk of the smoke will remain aloft, enough will make its way to the surface to result in generally low Moderate PM2.5 levels for a daily 24-hour average. Some lingering clouds and spotty precipitation is expected Wednesday into Thursday as the low pressure system continues to spin over New England. Ozone levels will remain low with Good conditions expected statewide. Fine particulates will also drop back into the Good range as clean northerly flow and sufficient mixing helps to reduce smoke impacts and lower concentrations. 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.