The highest AQ index in Maryland (as of 18:00 EDT) is currently the Suburban DC area. Particle Pollution (PM2.5) is measuring at 54 (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 Ozone (OZONE) will be in the Northeast Maryland 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.
Sufficient sun and warm temperatures Tuesday and Wednesday will support ozone formation. A rebound in ozone will begin Tuesday, though an initially clean background airmass will keep ozone mainly within the Good range for the daily average. Continued sun and heat Wednesday will further push ozone into the Moderate range on Wednesday. A few hourly concentrations may push towards the upper Moderate to threshold USG downwind of the urban centers, but daily average exposure should fall well short of the alert thresholds resulting in Moderate ozone forecast for the I-95 corridor, with Good AQI continuing elsewhere. Ozone levels will persist initially on Thursday with persistent heat, though increases in clouds by afternoon should cap any ozone rise for another mixed bag of low-end Moderate for the I-95 corridor and Good AQI elsewhere. Wildfire smoke across the country has diminished greatly in magnitude away from ongoing western fires, with little if any impacts from diffuse smoke expected in Maryland for the first part of the workweek. 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 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 14 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.