The highest AQ index in Maryland (as of 18:00 EST) is currently the Northeast Maryland area. Particle Pollution (PM2.5) is measuring at 46 (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.
With a new and deep snowpack across Maryland, daily average fine particle concentrations will remain elevated for the next several days as temperatures stay well below seasonal norms. Some daytime mixing over the next several days should be enough to keep fine particulates from climbing too high, resulting in 24-hour PM2.5 concentrations in the Moderate range statewide. Hourly concentrations could certainly flirt with the high Moderate to low USG range, especially during the overnight and early morning hours where local woodburning is more prevalent. The situation will be monitored closely. 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.