Pennsylvania air quality

Monroe County, Pennsylvania Air Quality

Monroe County41.058, -75.339

The nearest monitor to Monroe County, at Swiftwater, 2 miles away, measured an index of 25 at Mon, 1:00 PM EDT, which is Good for ground-level ozone. New Jersey Dept. of Environmental Protection forecasts Good for Delaware Water Gap today and Good tomorrow.

Measured now
25 · Good
Today
30 · Good
Tomorrow
30 · Good
Pollutant
Ozone

Fine particles on the map

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Monroe County, Pennsylvania. Open it for the live map, where it pans and zooms.

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Monroe County, Pennsylvania 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 Monroe County right now. All Pennsylvania warnings.

Now

Good

Nearest monitor
Swiftwater, 2 miles away (site 420890002)
Index measured
25 · Good
Measured at
Mon, 1:00 PM EDT
Fine particles
2.1 µg/m³
Ozone
28 ppb
Reporting area
Delaware Water Gap, NJ, 21 miles away
Reported by
New Jersey Dept. of Environmental Protection
Area index
17 · Good

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

Today and tomorrow

New Jersey Dept. of Environmental Protection's own forecast for Delaware Water Gap, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood30PM2.5
TomorrowGood30Ozone

The forecaster’s discussion

Written by New Jersey Dept. of Environmental Protection for Delaware Water Gap and filed with AirNow.

9/21 - Partly to mostly cloudy skies, highs in the low 70s, and steady northeasterly winds will help to keep air quality in the Good category statewide today. 9/22 - Unsettled weather returns on Tuesday as an area of low pressure pushes into the Mid-Atlantic region, resulting in scattered showers, breezy winds persisting out of the northeast, and cooler temperatures in the low to mid 60s across New Jersey. Air quality will remain in the Good category statewide as a result.

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 30, Good, around Wed, 8:00 PM EDT, from the run issued Mon, 8:00 AM EDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Mon, 10:00 AM EDT14Good2.1
Mon, 11:00 AM EDT13Good2.3
Mon, 12:00 PM EDT11Good1.8
Mon, 1:00 PM EDT10Good1.7
Mon, 2:00 PM EDT7Good0.6
Mon, 3:00 PM EDT6Good1
Mon, 4:00 PM EDT24Good1.126.7
Mon, 5:00 PM EDT26Good1.328.1
Mon, 6:00 PM EDT26Good2.128.6
Mon, 7:00 PM EDT26Good2.828.7
Mon, 8:00 PM EDT26Good2.728
Mon, 9:00 PM EDT25Good2.527.2
Mon, 10:00 PM EDT24Good4.526.5
Mon, 11:00 PM EDT23Good4.625.5
Tue, 12:00 AM EDT23Good4.324.6
Tue, 1:00 AM EDT22Good3.924.2
Tue, 2:00 AM EDT24Good4.723.7
Tue, 3:00 AM EDT27Good5.322.7
Tue, 4:00 AM EDT27Good5.221.9
Tue, 5:00 AM EDT26Good4.521
Tue, 6:00 AM EDT24Good3.920.7
Tue, 7:00 AM EDT19Good2.420.4
Tue, 8:00 AM EDT18Good219.9
Tue, 9:00 AM EDT18Good1.519.3
Tue, 10:00 AM EDT18Good1.519.4
Tue, 11:00 AM EDT18Good0.819.8
Tue, 12:00 PM EDT19Good0.520.5
Tue, 1:00 PM EDT19Good0.421
Tue, 2:00 PM EDT19Good0.621.1
Tue, 3:00 PM EDT19Good1.320.9
Tue, 4:00 PM EDT19Good0.421
Tue, 5:00 PM EDT19Good0.521
Tue, 6:00 PM EDT19Good1.220.7
Tue, 7:00 PM EDT19Good1.620.4
Tue, 8:00 PM EDT19Good0.920.5
Tue, 9:00 PM EDT19Good0.520.9
Tue, 10:00 PM EDT19Good1.321.1
Tue, 11:00 PM EDT19Good1.321.5
Wed, 12:00 AM EDT19Good2.221.7
Wed, 1:00 AM EDT19Good2.121.6
Wed, 2:00 AM EDT19Good1.921.2
Wed, 3:00 AM EDT19Good1.720.7
Wed, 4:00 AM EDT18Good1.519.6
Wed, 5:00 AM EDT17Good1.618.6
Wed, 6:00 AM EDT16Good1.917.9
Wed, 7:00 AM EDT16Good117.1
Wed, 8:00 AM EDT14Good1.715.9
Wed, 9:00 AM EDT14Good0.715.3
Wed, 10:00 AM EDT14Good115.5
Wed, 11:00 AM EDT14Good215.9
Wed, 12:00 PM EDT15Good217
Wed, 1:00 PM EDT17Good1.818
Wed, 2:00 PM EDT18Good1.119.1
Wed, 3:00 PM EDT19Good220.8
Wed, 4:00 PM EDT21Good223.6
Wed, 5:00 PM EDT24Good1.526.7
Wed, 6:00 PM EDT27Good1.829.2
Wed, 7:00 PM EDT29Good1.931.5
Wed, 8:00 PM EDT30Good1.732.6
Wed, 9:00 PM EDT30Good133
Wed, 10:00 PM EDT30Good2.433
Wed, 11:00 PM EDT30Good1.832
Thu, 12:00 AM EDT28Good1.930.2
Thu, 1:00 AM EDT25Good1.827.5
Thu, 2:00 AM EDT22Good1.924.7
Thu, 3:00 AM EDT19Good2.122
Thu, 4:00 AM EDT19Good1.920.2
Thu, 5:00 AM EDT17Good218.9
Thu, 6:00 AM EDT16Good217.6
Thu, 7:00 AM EDT16Good0.917.1
Thu, 8:00 AM EDT15Good1.316.8

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 analysts have not drawn smoke over Monroe County in satellite imagery today.

NOAA’s model forecasts no measurable smoke near the ground here over the next two days.

Smoke on the radar over Monroe County

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 Monroe CountyWarnings in Monroe CountyLive radar over Monroe CountyPennsylvania 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.