Virginia air quality

Rose Hill, Virginia Air Quality

Fairfax County38.789, -77.113

The nearest monitor to Rose Hill, at FRANCONIA, 1 mile away, measured an index of 22 at Tue, 11:00 AM EDT, which is Good for ground-level ozone. Metropolitan Washington COG forecasts Good for Northern Virginia and DC today and Good tomorrow.

Measured now
22 · Good
Today
22 · Good
Tomorrow
22 · Good
Pollutant
Ozone

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Rose Hill, Virginia 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 Rose Hill right now. All Virginia warnings.

Now

Good

Nearest monitor
FRANCONIA, 1 mile away (site 510590030)
Index measured
22 · Good
Measured at
Tue, 11:00 AM EDT
Fine particles
2.3 µg/m³
Ozone
24 ppb
Reporting area
Northern Virginia and DC, DC, 10 miles away
Reported by
Metropolitan Washington COG
Area index
29 · Good

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

Today and tomorrow

Metropolitan Washington COG's own forecast for Northern Virginia and DC, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood22PM2.5
TomorrowGood22PM2.5
Thursday, September 24Good22PM2.5

Hour by hour

NOAA’s air quality model could not be read for this point just now. It runs twice a day and covers the lower 48, Alaska and Hawaii.

Smoke

NOAA’s analysts have not drawn smoke over Rose Hill 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 Rose Hill

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 Rose HillWarnings in Fairfax CountyLive radar over Rose HillVirginia 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.