California air quality

Parkway, California Air Quality

Sacramento County38.496, -121.459

The nearest monitor to Parkway, at Downtown Sacramento - T Street, 5 miles away, measured an index of 24 at Sun, 9:00 AM PDT, which is Good for fine particles (PM2.5). Sacramento Metro. AQMD forecasts Good for Sacramento today and Moderate tomorrow.

Measured now
24 · Good
Today
43 · Good
Tomorrow
51 · Moderate
Pollutant
PM2.5

Fine particles on the map

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

Forecast fine particulate matter from NOAA’s National Air Quality Forecast Capability over Parkway, California 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 Parkway right now. All California warnings.

Now

Good

Nearest monitor
Downtown Sacramento - T Street, 5 miles away (site 060670010)
Index measured
24 · Good
Measured at
Sun, 9:00 AM PDT
Fine particles
3.3 µg/m³
Ozone
22 ppb
Reporting area
Sacramento, CA, 5 miles away
Reported by
Sacramento Metro. AQMD
Area index
28 · Good

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

Today and tomorrow

Sacramento Metro. AQMD's own forecast for Sacramento, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood43Ozone
TomorrowModerate51Ozone
Tuesday, September 22Moderate61Ozone
Wednesday, September 23Moderate74Ozone
Thursday, September 24Moderate80Ozone

The forecaster’s discussion

Written by Sacramento Metro. AQMD for Sacramento and filed with AirNow.

Saturday, as an upper-level ridge of high pressure moves across northern California, sunny skies and temperatures around 90F will enhance ozone formation. In addition, light and variable winds will reduce pollutant dispersion in the Sacramento region. As a result, ozone levels will be low-Moderate. Sunday, increasing clouds and slightly cooler temperatures will hinder ozone production as a trough of low pressure aloft approaches the region. Therefore, ozone levels will improve to high-Good. Monday, mostly sunny skies and temperatures warming into the upper-80s will increase ozone formation in the Sacramento region. However, light to moderate onshore winds will develop through the afternoon, dispersing pollutants and leading to low-Moderate ozone levels.

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 53, Moderate, around Sun, 1:00 PM PDT, from the run issued Sun, 5:00 AM PDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 7:00 AM PDT33Good5.4
Sun, 8:00 AM PDT30Good4.9
Sun, 9:00 AM PDT33Good7
Sun, 10:00 AM PDT36Good7.4
Sun, 11:00 AM PDT42Good8.6
Sun, 12:00 PM PDT51Moderate11
Sun, 1:00 PM PDT53Moderate11.622.2
Sun, 2:00 PM PDT53Moderate9.824.8
Sun, 3:00 PM PDT51Moderate8.428.3
Sun, 4:00 PM PDT51Moderate9.131.8
Sun, 5:00 PM PDT52Moderate10.335.1
Sun, 6:00 PM PDT53Moderate11.138.2
Sun, 7:00 PM PDT53Moderate10.440.9
Sun, 8:00 PM PDT52Moderate9.141.7
Sun, 9:00 PM PDT50Good7.540.9
Sun, 10:00 PM PDT47Good7.539.3
Sun, 11:00 PM PDT37Good5.436.9
Mon, 12:00 AM PDT32Good534.5
Mon, 1:00 AM PDT30Good5.132
Mon, 2:00 AM PDT32Good6.129.3
Mon, 3:00 AM PDT31Good5.627.1
Mon, 4:00 AM PDT29Good4.925.7
Mon, 5:00 AM PDT26Good4.325.1
Mon, 6:00 AM PDT24Good4.124.4
Mon, 7:00 AM PDT26Good4.923.7
Mon, 8:00 AM PDT26Good4.723.3
Mon, 9:00 AM PDT32Good6.923.4
Mon, 10:00 AM PDT35Good7.324
Mon, 11:00 AM PDT42Good8.824.7
Mon, 12:00 PM PDT46Good8.826.3
Mon, 1:00 PM PDT49Good9.528.4
Mon, 2:00 PM PDT51Moderate9.531.5
Mon, 3:00 PM PDT51Moderate9.235.2
Mon, 4:00 PM PDT49Good8.739
Mon, 5:00 PM PDT47Good8.242.2
Mon, 6:00 PM PDT44Good7.444.6
Mon, 7:00 PM PDT42Good6.746
Mon, 8:00 PM PDT42Good6.645.5
Mon, 9:00 PM PDT41Good5.644.1
Mon, 10:00 PM PDT38Good6.742
Mon, 11:00 PM PDT36Good6.139.1
Tue, 12:00 AM PDT33Good5.636
Tue, 1:00 AM PDT33Good5.732.8
Tue, 2:00 AM PDT34Good6.929.9
Tue, 3:00 AM PDT34Good5.927.9
Tue, 4:00 AM PDT31Good526.6
Tue, 5:00 AM PDT27Good4.125.7
Tue, 6:00 AM PDT23Good3.524.5
Tue, 7:00 AM PDT24Good4.723.6
Tue, 8:00 AM PDT23Good3.822.7
Tue, 9:00 AM PDT26Good5.222.3
Tue, 10:00 AM PDT27Good5.122.6
Tue, 11:00 AM PDT31Good6.523.1
Tue, 12:00 PM PDT32Good5.924.6
Tue, 1:00 PM PDT37Good7.526.9
Tue, 2:00 PM PDT40Good7.830.2
Tue, 3:00 PM PDT43Good8.433.9
Tue, 4:00 PM PDT44Good8.237.9
Tue, 5:00 PM PDT46Good8.741.5
Tue, 6:00 PM PDT47Good8.844.4
Tue, 7:00 PM PDT47Good8.346.2
Tue, 8:00 PM PDT44Good7.446.3
Tue, 9:00 PM PDT42Good6.645
Tue, 10:00 PM PDT40Good6.642.8
Tue, 11:00 PM PDT38Good640.2
Wed, 12:00 AM PDT34Good5.337
Wed, 1:00 AM PDT32Good5.433.4
Wed, 2:00 AM PDT34Good729.8
Wed, 3:00 AM PDT35Good6.426.8
Wed, 4:00 AM PDT33Good5.824.5
Wed, 5:00 AM PDT33Good5.923

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 Parkway in satellite imagery today.

NOAA’s model forecasts near-surface smoke peaking at 0.6 µg/m³ around Mon, 4:00 PM PDT.

Smoke on the radar over Parkway

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 ParkwayWarnings in Sacramento CountyLive radar over ParkwayCalifornia 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.