The highest AQ index in Maryland (as of 17:00 EDT) is currently the Metro Baltimore area. Ozone (OZONE) is measuring at 48 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.
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.
Canadian high pressure will move overhead for the weekend, helping to keep temperatures cool and dew points low. This along with a clean residual air mass will ensure Good air quality across the state. High pressure shifts off the East Coast, persisting for several days. Temperatures and dew points will be on the rise as winds shift southerly. This southerly flow will also help to tap into diffuse smoke linked to agricultural burning common across the Southeast states this time of year. As a result, expect an uptick in fine particulates to the low Moderate range for Monday and Tuesday. A frontal system will work its way south through the state Wednesday afternoon. Clean air will begin to filter in behind the front. However, given the timing of frontal progression, expect threshold Good to low Moderate PM2.5 levels across the state for a 24-hour average. 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 4 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.