Owens Cross Roads, Alabama Air Quality

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 Owens Cross Roads right now. All Alabama warnings.

Moderate

Nearest monitor

Huntsville Old Airport, 10 miles away (site 010890014)

Index measured

56 · Moderate

Measured at

Mon, 2:00 PM CDT

Fine particles

12 µg/m³

Ozone

54 ppb

Reporting area

Huntsville, AL, 13 miles away

Reported by

Alabama Department of Environmental Management

Area index

56 · Moderate

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

Alabama Department of Environmental Management's own forecast for Huntsville, written by a forecaster rather than read off a model.

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 52, Moderate, around Mon, 2:00 PM CDT, from the run issued Mon, 7:00 AM CDT. This is a model, not a measurement.

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.

NOAA’s Hazard Mapping System analysts drew medium smoke over Owens Cross Roads in satellite imagery today (Mon, 7:00 AM CDT to Mon, 10:00 AM CDT). That is smoke seen from above; it is not always smoke at ground level.

NOAA’s model forecasts near-surface smoke peaking at 1.6 µg/m³ around Tue, 4:00 PM CDT.

Smoke on the radar over Owens Cross Roads

Moderate

Air quality is acceptable. There may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Who is affected

People who are unusually sensitive to ozone or fine particles.

What to do

If you are unusually sensitive, consider making long or intense outdoor activity shorter or easier.

Index range

51 to 100

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.

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

• New Hope, AL5 miles
• Huntsville, AL12 miles
• Redstone Arsenal, AL13 miles
• Moores Mill, AL18 miles
• Madison, AL18 miles
• Guntersville, AL18 miles
• Arab, AL19 miles
• Meridianville, AL19 miles

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.