New Hampshire air quality

Hooksett, New Hampshire Air Quality

Merrimack County43.097, -71.465

The nearest monitor to Hooksett, at Concord, 9 miles away, measured an index of 19 at Sun, 4:00 PM EDT, which is Good for ground-level ozone. New Hampshire Dept. of Environmental Services forecasts Good for Interior Rockingham County today and Good tomorrow.

Measured now
19 · Good
Today
— · Good
Tomorrow
— · Good
Pollutant
Ozone

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Hooksett, New Hampshire 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 Hooksett right now. All New Hampshire warnings.

Now

Good

Nearest monitor
Concord, 9 miles away (site 330131007)
Index measured
19 · Good
Measured at
Sun, 4:00 PM EDT
Ozone
24 ppb
Reporting area
Interior Rockingham County, NH, 15 miles away
Reported by
New Hampshire Dept. of Environmental Services
Area index
22 · Good

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

Today and tomorrow

New Hampshire Dept. of Environmental Services's own forecast for Interior Rockingham County, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGoodPM2.5
TomorrowGoodPM2.5

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 31, Good, around Sun, 10:00 AM EDT, from the run issued Sun, 8:00 AM EDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 10:00 AM EDT31Good5.8
Sun, 11:00 AM EDT31Good5.5
Sun, 12:00 PM EDT31Good5.7
Sun, 1:00 PM EDT31Good5.6
Sun, 2:00 PM EDT30Good4.8
Sun, 3:00 PM EDT28Good4.5
Sun, 4:00 PM EDT25Good3.713
Sun, 5:00 PM EDT21Good3.113.6
Sun, 6:00 PM EDT17Good2.514
Sun, 7:00 PM EDT14Good2.214.2
Sun, 8:00 PM EDT14Good2.514.5
Sun, 9:00 PM EDT14Good2.315.3
Sun, 10:00 PM EDT15Good2.816.2
Sun, 11:00 PM EDT16Good3.217.1
Mon, 12:00 AM EDT17Good3.217.9
Mon, 1:00 AM EDT17Good2.818.4
Mon, 2:00 AM EDT17Good2.818.4
Mon, 3:00 AM EDT17Good3.118.3
Mon, 4:00 AM EDT16Good3.117.7
Mon, 5:00 AM EDT17Good3.116.9
Mon, 6:00 AM EDT17Good3.315.8
Mon, 7:00 AM EDT17Good3.214
Mon, 8:00 AM EDT17Good3.212.3
Mon, 9:00 AM EDT17Good2.610.9
Mon, 10:00 AM EDT16Good2.710.6
Mon, 11:00 AM EDT16Good3.211.2
Mon, 12:00 PM EDT17Good3.212.8
Mon, 1:00 PM EDT16Good2.714.7
Mon, 2:00 PM EDT16Good317.1
Mon, 3:00 PM EDT19Good2.920.2
Mon, 4:00 PM EDT21Good2.423.3
Mon, 5:00 PM EDT23Good2.225.8
Mon, 6:00 PM EDT25Good1.527.1
Mon, 7:00 PM EDT25Good1.327.4
Mon, 8:00 PM EDT24Good1.326.8
Mon, 9:00 PM EDT23Good1.125.8
Mon, 10:00 PM EDT23Good125
Mon, 11:00 PM EDT22Good0.424.5
Tue, 12:00 AM EDT21Good0.723.7
Tue, 1:00 AM EDT20Good0.922.7
Tue, 2:00 AM EDT19Good121.7
Tue, 3:00 AM EDT19Good1.120.7
Tue, 4:00 AM EDT18Good119.9
Tue, 5:00 AM EDT18Good119
Tue, 6:00 AM EDT17Good1.218.1
Tue, 7:00 AM EDT15Good0.816.7
Tue, 8:00 AM EDT14Good0.715.1
Tue, 9:00 AM EDT13Good0.414.3
Tue, 10:00 AM EDT13Good0.714.2
Tue, 11:00 AM EDT13Good1.114.9
Tue, 12:00 PM EDT15Good1.416.1
Tue, 1:00 PM EDT16Good1.117.3
Tue, 2:00 PM EDT17Good0.918.7
Tue, 3:00 PM EDT19Good0.820.6
Tue, 4:00 PM EDT20Good0.822.9
Tue, 5:00 PM EDT22Good0.824.3
Tue, 6:00 PM EDT23Good125.3
Tue, 7:00 PM EDT23Good1.325.7
Tue, 8:00 PM EDT23Good1.625.1
Tue, 9:00 PM EDT23Good1.725.1
Tue, 10:00 PM EDT22Good1.524.7
Tue, 11:00 PM EDT21Good1.523.6
Wed, 12:00 AM EDT20Good1.422.6
Wed, 1:00 AM EDT19Good1.521.6
Wed, 2:00 AM EDT19Good1.620.7
Wed, 3:00 AM EDT18Good1.519.6
Wed, 4:00 AM EDT18Good119
Wed, 5:00 AM EDT16Good0.917.5
Wed, 6:00 AM EDT15Good1.216.1
Wed, 7:00 AM EDT13Good1.114.8
Wed, 8:00 AM EDT12Good1.313.8

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 Hooksett 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 Hooksett

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 HooksettWarnings in Merrimack CountyLive radar over HooksettNew Hampshire 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.