Hawaii air quality

Financial District, Hawaii Air Quality

Honolulu County21.309, -157.861

The nearest monitor to Financial District, at Honolulu, under a mile away, measured an index of 20 at Sun, 9:00 AM HST, which is Good for fine particles (PM2.5). Hawaii State Dept. of Health forecasts Good for Honolulu today and Good tomorrow.

Measured now
20 · Good
Today
— · Good
Tomorrow
— · Good
Pollutant
PM2.5

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Financial District, Hawaii 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 Financial District right now. All Hawaii warnings.

Now

Good

Nearest monitor
Honolulu, under a mile away (site 150031001)
Index measured
20 · Good
Measured at
Sun, 9:00 AM HST
Fine particles
3.4 µg/m³
Reporting area
Honolulu, HI, under a mile away
Reported by
Hawaii State Dept. of Health
Area index
20 · Good

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

Today and tomorrow

Hawaii State Dept. of Health's own forecast for Honolulu, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGoodOzone
TomorrowGoodOzone

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 Financial District 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 Financial District

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 Financial DistrictWarnings in Honolulu CountyLive radar over Financial DistrictHawaii 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.