Air Quality (AQI) & Weather in Saint James, MD (21781)

Q: What is the primary air pollutant in Saint James, MD?

The primary air pollutants monitored in Saint James include Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Ground-level Ozone (O3), Carbon Monoxide (CO), Nitrogen Dioxide (NO2), and Sulfur Dioxide (SO2).

Air Quality Index

Temperature

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Real-time Temp

Humidity

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Relative humidity

Wind

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Wind Speed

Pollutants

Good

Moderate

USG

Unhealthy

Very Unhealthy

Hazard

Location Map

39.57123, -77.75981

7-Day Forecast

Full Weather for Saint James

Past 30 Days — AQI History

Health Advice

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Recommendations are indicative. Consult local advisories if you have underlying health concerns.

About Air Quality in Saint James, MD

Get real-time updates on air quality in Saint James (21781), including detailed metrics for key pollutants like PM2.5, PM10, Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).

This dashboard presents live Air Quality Index (AQI) calculations alongside a 7-day weather forecast for Saint James, MD. Monitor changing pollution levels, relative humidity, wind speeds, and temperature trends to plan safer outdoor activities for your family.

Understanding AQI Ratings

The standard US Air Quality Index (AQI) runs from 0 to 500. Higher values indicate higher levels of air pollution:

0–50 (Good): Air quality is satisfactory; minimal risk.
51–100 (Moderate): Acceptable; slight concern for sensitive people.
101–150 (USG): Sensitive groups may experience health effects.
151–200 (Unhealthy): General public may begin to feel effects.
201–300 (Very Unhealthy): Health alert; increased risk for everyone.

Air Pollution Prevention & Health Tips for Saint James

Air quality in Saint James, MD fluctuates based on weather patterns, traffic volume, seasonal industrial output, and atmospheric conditions.

Outdoor Mask Protection

During high PM2.5 pollution spikes (AQI > 150), standard surgical masks are insufficient. N95 or KN95 respirators are recommended for effective filtering.

Indoor Air Purifiers

Using True HEPA air purifiers inside homes and offices in Saint James helps filter airborne dust, allergens, pollen, and dangerous fine particles.

Environmental & Demographic Profile — Saint James, MD (21781)

The ZIP code 21781 is situated in Saint James, located within Washington County, MD. According to US Census estimates, the 21781 postal code serves an estimated population of 34 residents across an area with a population density of 54.7 people per square mile. Operating under the America/New York timezone, local atmospheric telemetry in this area is monitored continuously via nearby regional monitoring stations.

Saint James is categorized as a low-density or regional geographic area. Lower industrial activity generally reduces localized vehicular pollution, though ambient air quality can still be impacted by agricultural particulate matter, regional wind currents, or seasonal meteorological activity.

Geographic & Administrative Details

County: Washington County
Coordinates: 39.5712, -77.7598
Timezone: America/New_York
Associated Regions: Washington

Frequently Asked Questions About Saint James Air Quality

What is the primary air pollutant in Saint James, MD?

The primary pollutants continuously monitored in Saint James include Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Ground-level Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).

Is it safe to exercise outdoors today in Saint James (21781)?

Outdoor exercise safety in Saint James depends on the real-time Air Quality Index (AQI). An AQI between 0 and 50 is ideal for all outdoor activities. If the index rises above 100, sensitive individuals should reduce prolonged outdoor exertion.

How often is the air quality data updated for ZIP code 21781?

Air quality observations and weather metrics on this page are updated in real-time using continuous telemetry from local satellite feeds and ground station monitors.