Air Quality (AQI) & Weather in Grass Valley, CA (95945)

Q: What is the primary air pollutant in Grass Valley, CA?

The primary air pollutants monitored in Grass Valley include Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Ground-level Ozone (O3), Carbon Monoxide (CO), Nitrogen Dioxide (NO2), and Sulfur Dioxide (SO2).

Air Quality Index

Temperature

--°C

Real-time Temp

Humidity

--%

Relative humidity

Wind

-- km/h

Wind Speed

Pollutants

Good

Moderate

USG

Unhealthy

Very Unhealthy

Hazard

Location Map

39.19426, -120.98199

7-Day Forecast

Full Weather for Grass Valley

Past 30 Days — AQI History

Health Advice

Loading recommendations...

Recommendations are indicative. Consult local advisories if you have underlying health concerns.

About Air Quality in Grass Valley, CA

Get real-time updates on air quality in Grass Valley (95945), including detailed metrics for key pollutants like PM2.5, PM10, Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).

This dashboard presents live Air Quality Index (AQI) calculations alongside a 7-day weather forecast for Grass Valley, CA. Monitor changing pollution levels, relative humidity, wind speeds, and temperature trends to plan safer outdoor activities for your family.

Understanding AQI Ratings

The standard US Air Quality Index (AQI) runs from 0 to 500. Higher values indicate higher levels of air pollution:

0–50 (Good): Air quality is satisfactory; minimal risk.
51–100 (Moderate): Acceptable; slight concern for sensitive people.
101–150 (USG): Sensitive groups may experience health effects.
151–200 (Unhealthy): General public may begin to feel effects.
201–300 (Very Unhealthy): Health alert; increased risk for everyone.

Air Pollution Prevention & Health Tips for Grass Valley

Air quality in Grass Valley, CA fluctuates based on weather patterns, traffic volume, seasonal industrial output, and atmospheric conditions.

Outdoor Mask Protection

During high PM2.5 pollution spikes (AQI > 150), standard surgical masks are insufficient. N95 or KN95 respirators are recommended for effective filtering.

Indoor Air Purifiers

Using True HEPA air purifiers inside homes and offices in Grass Valley helps filter airborne dust, allergens, pollen, and dangerous fine particles.

Environmental & Demographic Profile — Grass Valley, CA (95945)

The ZIP code 95945 is situated in Grass Valley, located within Nevada County, CA. According to US Census estimates, the 95945 postal code serves an estimated population of 27,675 residents across an area with a population density of 174.8 people per square mile. Operating under the America/Los Angeles timezone, local atmospheric telemetry in this area is monitored continuously via nearby regional monitoring stations.

Grass Valley is categorized as a low-density or regional geographic area. Lower industrial activity generally reduces localized vehicular pollution, though ambient air quality can still be impacted by agricultural particulate matter, regional wind currents, or seasonal meteorological activity.

Geographic & Administrative Details

County: Nevada County
Coordinates: 39.1943, -120.9820
Timezone: America/Los_Angeles
Associated Regions: Nevada

Frequently Asked Questions About Grass Valley Air Quality

What is the primary air pollutant in Grass Valley, CA?

The primary pollutants continuously monitored in Grass Valley include Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Ground-level Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).

Is it safe to exercise outdoors today in Grass Valley (95945)?

Outdoor exercise safety in Grass Valley depends on the real-time Air Quality Index (AQI). An AQI between 0 and 50 is ideal for all outdoor activities. If the index rises above 100, sensitive individuals should reduce prolonged outdoor exertion.

How often is the air quality data updated for ZIP code 95945?

Air quality observations and weather metrics on this page are updated in real-time using continuous telemetry from local satellite feeds and ground station monitors.