California air quality

Ojai, California Air Quality

Ventura County34.448, -119.243

The nearest monitor to Ojai, at Ojai - Ojai Ave., under a mile away, measured an index of 49 at Sun, 12:00 PM PDT, which is Good for fine particles (PM2.5). Ventura County APCD forecasts Good for Ojai today and Good tomorrow.

Measured now
49 · Good
Today
44 · Good
Tomorrow
43 · Good
Pollutant
PM2.5

Fine particles on the map

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

Now

Good

Nearest monitor
Ojai - Ojai Ave., under a mile away (site 061111004)
Index measured
49 · Good
Measured at
Sun, 12:00 PM PDT
Fine particles
12 µg/m³
Ozone
47 ppb
Reporting area
Ojai, CA, under a mile away
Reported by
Ventura County APCD
Area index
49 · Good

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

Today and tomorrow

Ventura County APCD's own forecast for Ojai, written by a forecaster rather than read off a model.

DayCategoryIndexPollutant
TodayGood44Ozone
TomorrowGood43Ozone
Tuesday, September 22Good44Ozone
Wednesday, September 23Good45Ozone

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 Tue, 10:00 AM PDT, from the run issued Sun, 5:00 AM PDT. This is a model, not a measurement.

HourIndexCategoryPM2.5Ozone
Sun, 7:00 AM PDT32Good6.1
Sun, 8:00 AM PDT31Good5.4
Sun, 9:00 AM PDT34Good7.3
Sun, 10:00 AM PDT43Good9.4
Sun, 11:00 AM PDT43Good7.6
Sun, 12:00 PM PDT45Good8.6
Sun, 1:00 PM PDT46Good8.627.5
Sun, 2:00 PM PDT47Good8.831.7
Sun, 3:00 PM PDT49Good9.236.3
Sun, 4:00 PM PDT51Moderate9.940.8
Sun, 5:00 PM PDT52Moderate1044
Sun, 6:00 PM PDT52Moderate10.345.3
Sun, 7:00 PM PDT52Moderate9.145.5
Sun, 8:00 PM PDT52Moderate10.745.1
Sun, 9:00 PM PDT51Moderate8.343.6
Sun, 10:00 PM PDT49Good841.1
Sun, 11:00 PM PDT48Good7.738.2
Mon, 12:00 AM PDT42Good6.534.8
Mon, 1:00 AM PDT36Good5.731.2
Mon, 2:00 AM PDT34Good5.627.5
Mon, 3:00 AM PDT36Good6.823.9
Mon, 4:00 AM PDT34Good5.920.2
Mon, 5:00 AM PDT32Good5.417.2
Mon, 6:00 AM PDT36Good7.315.2
Mon, 7:00 AM PDT39Good7.813.6
Mon, 8:00 AM PDT39Good7.612.9
Mon, 9:00 AM PDT44Good9.113.6
Mon, 10:00 AM PDT48Good9.616.4
Mon, 11:00 AM PDT49Good9.120
Mon, 12:00 PM PDT47Good824
Mon, 1:00 PM PDT48Good8.828.5
Mon, 2:00 PM PDT48Good8.733
Mon, 3:00 PM PDT49Good9.137.5
Mon, 4:00 PM PDT49Good8.841.7
Mon, 5:00 PM PDT47Good7.544.6
Mon, 6:00 PM PDT47Good945.3
Mon, 7:00 PM PDT46Good7.545.4
Mon, 8:00 PM PDT45Good7.444.8
Mon, 9:00 PM PDT41Good6.343
Mon, 10:00 PM PDT37Good5.840
Mon, 11:00 PM PDT37Good6.636.5
Tue, 12:00 AM PDT36Good632.5
Tue, 1:00 AM PDT37Good7.328.7
Tue, 2:00 AM PDT37Good6.325
Tue, 3:00 AM PDT37Good6.721.3
Tue, 4:00 AM PDT37Good6.718.1
Tue, 5:00 AM PDT36Good6.415.5
Tue, 6:00 AM PDT36Good6.614.1
Tue, 7:00 AM PDT37Good6.913.3
Tue, 8:00 AM PDT36Good613.1
Tue, 9:00 AM PDT40Good8.814
Tue, 10:00 AM PDT53Moderate12.516.7
Tue, 11:00 AM PDT53Moderate1120.3
Tue, 12:00 PM PDT53Moderate1024.2
Tue, 1:00 PM PDT52Moderate9.728.6
Tue, 2:00 PM PDT50Good8.233
Tue, 3:00 PM PDT47Good837.5
Tue, 4:00 PM PDT45Good7.941.6
Tue, 5:00 PM PDT41Good6.744.5
Tue, 6:00 PM PDT42Good6.745.7
Tue, 7:00 PM PDT42Good5.645.6
Tue, 8:00 PM PDT41Good6.744.2
Tue, 9:00 PM PDT39Good6.742
Tue, 10:00 PM PDT37Good6.838.6
Tue, 11:00 PM PDT37Good6.834.9
Wed, 12:00 AM PDT34Good5.531.1
Wed, 1:00 AM PDT34Good5.927.4
Wed, 2:00 AM PDT34Good6.323.7
Wed, 3:00 AM PDT36Good6.920
Wed, 4:00 AM PDT34Good5.517.2
Wed, 5:00 AM PDT29Good4.214.8

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 Ojai in satellite imagery today.

NOAA’s model forecasts near-surface smoke peaking at 0.9 µg/m³ around Sat, 10:00 PM PDT.

Smoke on the radar over Ojai

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 OjaiWarnings in Ventura CountyLive radar over OjaiCalifornia 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.