The highest AQ index in Maryland (as of 14:00 EDT) is currently the Maryland Piedmont area. Ozone (OZONE) is measuring at 41 (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 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.
Sufficient scouring of atmospheric particle pollution within fog and light precipitation continue across the region on Friday, keeping fine particle concentrations lower than they might be given the persistent inverted low-levels of the atmosphere. Some increase in fine particles is expected Friday evening due to area wood burning in the cooler temperatures. This pollution will carry into Saturday. Weak mixing north of a warm front over northeastern Maryland for much of Saturday will keep the fine particle forecast within the lower Moderate AQI range. Southern and western areas of the state will see the warm front move north delivering warmer, well mixed air. Unfortunately, diffuse smoke will mix to the surface in these warmer areas, so air quality will improve only marginally to the upper Good to lower Moderate AQI threshold for the daily average there. All areas will initially be in the warm sector Sunday morning. Some diffuse smoke will persist with fine particle concentrations in the lower Moderate AQI range to start. A cold front will move through the region bringing periods of rain which should help scour particles from that atmosphere. Upper Good to low Moderate AQI is therefore expected for the daily average Sunday. Southwesterly flow and warmer temperatures are expected for Monday and into the middle of next week. We値l have to watch for smoke transport from controlled burns across the southeastern US, but generally upper Good and low Moderate AQI due to fine particles will persist. 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 5 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.