Maryland air quality

Locust Point Industrial Area, Maryland Air Quality

City of Baltimore39.268, -76.592

The nearest monitor to Locust Point Industrial Area, at Pumphrey, 4 miles away, measured an index of 12 at Fri, 3:00 AM EDT, which is Good for ground-level ozone. Maryland Department of the Environment forecasts Moderate for Metro Baltimore today and Good tomorrow. NOAA’s analysts drew light wildfire smoke over the town today.

Measured now
12 · Good
Today
53 · Moderate
Tomorrow
33 · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Locust Point Industrial Area, Maryland. Open it for the live map, where it pans and zooms.

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Locust Point Industrial Area, Maryland Open the live map with the particulate forecast

Map layer from NOAA National Air Quality Forecast Capability. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

An Air Quality Alert is issued by the National Weather Service on behalf of a state or local agency when pollution is expected to reach a level that harms health. An Air Stagnation Advisory means the air will not move enough to clear what is already in it.

None are in force near Locust Point Industrial Area right now. All Maryland warnings.

Now

Good

Nearest monitor
Pumphrey, 4 miles away (site 840240031004)
Index measured
12 · Good
Measured at
Fri, 3:00 AM EDT
Ozone
12 ppb
Reporting area
Metro Baltimore, MD, 6 miles away
Reported by
Maryland Department of the Environment
Area index
59 · Moderate

Measured, not modeled. AirNow observations are preliminary until the operating agency certifies them, which happens months later.

Today and tomorrow

Maryland Department of the Environment's own forecast for Metro Baltimore, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayModerate53PM2.5
TomorrowGood33PM2.5
Sunday, October 4Good28PM2.5

The forecaster’s discussion

Written by Maryland Department of the Environment for Metro Baltimore and filed with AirNow.

A typical fall-like diurnal pollutant pattern is expected Friday, although temperatures will be well above normal, as will background fine particle concentrations as a degraded airmass moves into the region ahead of cold front. Radiative cooling at night will stabilize the surface layer, allowing pollutants to increase. By sunrise, and an hour or two thereafter, fine particle concentrations will reach their daily peak Friday. This will be followed by increased mixing with sunlight and wind decreasing concentration levels. The fluctuating concentrations will average out to the lower Moderate AQI range for daily averages. Winds will shift northerly by Saturday which will bring a clean, dry Canadian air mass into the region. Fine particulates are expected to drop back comfortably into the Good AQI range statewide through the weekend. For the latest air quality information, please visit our website here. -MDE

Hour by hour

NOAA’s National Air Quality Forecast Capability, bias-corrected against monitors, for this town’s own coordinate. The worst hour ahead is an index of 59, Moderate, around Fri, 12:00 PM EDT, from the run issued Thu, 11:00 PM EDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Fri, 4:00 AM EDT54Moderate10.919.2
Fri, 5:00 AM EDT55Moderate1216.7
Fri, 6:00 AM EDT54Moderate9.814.8
Fri, 7:00 AM EDT54Moderate10.913.1
Fri, 8:00 AM EDT55Moderate11.711.5
Fri, 9:00 AM EDT56Moderate13.710.7
Fri, 10:00 AM EDT58Moderate14.211
Fri, 11:00 AM EDT58Moderate14.113
Fri, 12:00 PM EDT59Moderate14.116.4
Fri, 1:00 PM EDT59Moderate13.621
Fri, 2:00 PM EDT59Moderate13.726.8
Fri, 3:00 PM EDT59Moderate12.732.8
Fri, 4:00 PM EDT58Moderate11.238.6
Fri, 5:00 PM EDT56Moderate10.843.5
Fri, 6:00 PM EDT56Moderate10.846.2
Fri, 7:00 PM EDT49Good6.847.3
Fri, 8:00 PM EDT43Good546.4
Fri, 9:00 PM EDT40Good6.843.9
Fri, 10:00 PM EDT37Good5.140
Fri, 11:00 PM EDT33Good4.336
Sat, 12:00 AM EDT30Good2.732.9
Sat, 1:00 AM EDT28Good2.430.3
Sat, 2:00 AM EDT26Good2.728.4
Sat, 3:00 AM EDT24Good1.826.3
Sat, 4:00 AM EDT22Good1.924.7
Sat, 5:00 AM EDT21Good2.823.6
Sat, 6:00 AM EDT21Good3.823.3
Sat, 7:00 AM EDT21Good4.623.2
Sat, 8:00 AM EDT21Good3.822.3
Sat, 9:00 AM EDT19Good2.721.5
Sat, 10:00 AM EDT19Good3.120.8
Sat, 11:00 AM EDT19Good3.720.2
Sat, 12:00 PM EDT19Good3.420.2
Sat, 1:00 PM EDT19Good2.521
Sat, 2:00 PM EDT19Good2.621.6
Sat, 3:00 PM EDT20Good2.622.6
Sat, 4:00 PM EDT22Good2.324.3
Sat, 5:00 PM EDT23Good2.525.5
Sat, 6:00 PM EDT24Good2.326.2
Sat, 7:00 PM EDT24Good2.126.5
Sat, 8:00 PM EDT23Good1.525.2
Sat, 9:00 PM EDT20Good422.8
Sat, 10:00 PM EDT19Good4.219.9
Sat, 11:00 PM EDT24Good516.9
Sun, 12:00 AM EDT23Good4.313.9
Sun, 1:00 AM EDT27Good5.511.6
Sun, 2:00 AM EDT28Good5.110.2
Sun, 3:00 AM EDT27Good4.710.1
Sun, 4:00 AM EDT24Good411.1
Sun, 5:00 AM EDT23Good412.7
Sun, 6:00 AM EDT18Good2.514.6
Sun, 7:00 AM EDT15Good1.516.3
Sun, 8:00 AM EDT16Good1.117.6

Fine particles in micrograms per cubic meter, ozone in parts per billion as an 8-hour average. The index for each hour is EPA’s: the ozone figure is already the 8-hour average the ozone index is defined on, and the particle figure is run through EPA’s NowCast, which is how an hourly PM2.5 concentration becomes an index.

Smoke

NOAA’s Hazard Mapping System analysts drew light smoke over Locust Point Industrial Area in satellite imagery today (Thu, 8:00 AM EDT to Thu, 11:00 AM EDT). That is smoke seen from above; it is not always smoke at ground level.

NOAA’s model forecasts near-surface smoke peaking at 2.3 µg/m³ around Fri, 1:00 PM EDT.

Smoke on the radar over Locust Point Industrial Area

What this means

Good

Air quality is satisfactory, and air pollution poses little or no risk.

Who is affected
Nobody is expected to be affected.
What to do
It is a good day to be outside.
Index range
0 to 50

Category descriptions are the Environmental Protection Agency’s own.

What these numbers are. An index beside a monitor’s name is a measurement, published hourly by AirNow and preliminary until the operating agency certifies it. A category for today or tomorrow is a state or local agency forecaster’s own forecast for a reporting area. An hourly index is NOAA’s air quality model on a five-kilometer grid, not a reading from any instrument. Where a town has no monitor within reach, only the model figures appear, and the page says so.

Nearby

The nearest towns with a page of their own, closest first.

Weather forecast for Locust Point Industrial AreaWarnings in City of BaltimoreLive radar over Locust Point Industrial AreaMaryland air quality

Sources

Observations and daily forecasts from AirNow, the US Environmental Protection Agency’s program with NOAA, the National Park Service, NASA, tribal, state and local agencies. Hourly forecasts from NOAA’s National Air Quality Forecast Capability. Smoke analysis from NOAA’s Hazard Mapping System. Alerts from the National Weather Service. Index categories and breakpoints are EPA’s, as revised in 2024.