Air Quality (AQI) & Weather in Castle Rock, CO (80104)

Q: What is the primary air pollutant in Castle Rock, CO?

The primary air pollutants monitored in Castle Rock 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

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Real-time Temp

Humidity

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Relative humidity

Wind

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Wind Speed

Pollutants

Good

Moderate

USG

Unhealthy

Very Unhealthy

Hazard

Location Map

39.30213, -104.81967

7-Day Forecast

Full Weather for Castle Rock

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 Castle Rock, CO

Get real-time updates on air quality in Castle Rock (80104), 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 Castle Rock, CO. 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 Castle Rock

Air quality in Castle Rock, CO 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 Castle Rock helps filter airborne dust, allergens, pollen, and dangerous fine particles.

Environmental & Demographic Profile — Castle Rock, CO (80104)

The ZIP code 80104 is situated in Castle Rock, located within Douglas County, CO. According to US Census estimates, the 80104 postal code serves an estimated population of 36,461 residents across an area with a population density of 199.2 people per square mile. Operating under the America/Denver timezone, local atmospheric telemetry in this area is monitored continuously via nearby regional monitoring stations.

Castle Rock 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: Douglas County
Coordinates: 39.3021, -104.8197
Timezone: America/Denver
Associated Regions: Douglas

Frequently Asked Questions About Castle Rock Air Quality

What is the primary air pollutant in Castle Rock, CO?

The primary pollutants continuously monitored in Castle Rock 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 Castle Rock (80104)?

Outdoor exercise safety in Castle Rock 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 80104?

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.