The highest AQ index in Maryland (as of 16:00 EDT) is currently the Metro Baltimore area. Particle Pollution (PM2.5) is measuring at 33 (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 Maryland Piedmont area. It is forecasted to be Good, meaning air quality is satisfactory, and air pollution poses little or no risk.
The influence of a nor’easter continues to wane early this week. The storm moves east on Tuesday but will still provide northerly winds on the back side of the system. Regionally clean air will persist with Good AQI. On Wednesday, winds will diminish and begin a southward shift. Temperatures will also be on the increase. At present, regional concentrations are expected to remain modest, though an uptick in fine particle concentrations will be noted, particularly during the early morning hours. Good AQI should continue for the daily average. On Thursday, threshold Good/Moderate AQI is likely for the daily average due to concentrations well into the Moderate AQI during the early morning hours. This pollution will be mixed out in the afternoon, mitigating the daily average and resulting in a threshold Good/Moderate AQI forecast for Thursday. Fine particle forecasting continues year-round. 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 25 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.