Air Quality Index (AQI) in Dale City, United States 🇺🇸
Air quality in Dale City is currently 50 on the US AQI scale, rated Good.
Health Recommendations for Dale City Residents
Air quality is considered satisfactory, and air pollution poses little or no risk. It is a great day for outdoor activities in Dale City.
Dale City Air Pollution: Detailed Pollutant Breakdown
Dale City's Main Air Pollutant Today
The main concern in Dale City right now is Ozone at 104.0 µg/m³, about 1.0x the WHO 24-hour guideline.
Air Quality Health Advice for Dale City
| General public | Air quality is good. It is a great day to be active outside. |
|---|---|
| Sensitive groups | Air quality is good. Sensitive groups can enjoy normal outdoor activity. |
Air Quality in Other Cities in United States
Browse Air Quality in United States by cities in alphabetical order:
Air Quality in United States ›
Frequently Asked Questions about Air Quality in Dale City
What is the air quality (AQI) in Dale City right now?
The current air quality index in Dale City is 50 — categorised as Good.
Is the air in Dale City safe to breathe today?
Today's air quality in Dale City is rated Good on the US EPA scale.
What is the PM2.5 level in Dale City right now?
The fine-particle (PM2.5) concentration in Dale City is currently 9.0 µg/m³. PM2.5 is the most health-relevant pollutant — the WHO 24-hour guideline is 15 µg/m³.
What is the PM10 level in Dale City right now?
The coarse-particle (PM10) concentration in Dale City is currently 10.4 µg/m³.
What is the main pollutant in Dale City right now?
The dominant pollutant in Dale City right now is Ozone at 104.0 µg/m³.
Is it safe to exercise outdoors in Dale City today?
With air quality currently rated Good, outdoor exercise in Dale City is generally considered safe for most people.
How to Read the Air Quality Index for Dale City
Air is fresh and healthy. Safe for all outdoor activities.
Acceptable air quality, though sensitive groups should monitor comfort.
Vulnerable groups (children, elderly) should limit outdoor exertion.
Everyone begins to experience health effects. Stay indoors where possible.
Significant health impact for entire population. Emergency conditions.
Serious health alert: everyone may experience serious life-threatening effects.
Fine particles are at minimal, safe levels. Air is optimal.
Acceptable air, but haze may be present in urban areas.
Individuals with heart or lung disease should limit activity.
Particulate levels high enough to cause respiratory irritation.
Heavy haze. High risk to cardiovascular health for the public.
Lethal particulate concentrations. Critical neurological and lung risk.
Low levels of dust and coarse particles. Environment is safe.
Coarse particles may trigger coughing in sensitive groups.
Visible dust pollution. Sensitive groups should avoid heavy labor.
Widespread respiratory impacts likely for the population.
Dangerous dust and debris levels. Significant warnings issued.
Extremely high concentrations. Stay inside with filtration.
Surface ozone levels are within a safe, natural range.
Acceptable air, but sensitive individuals may feel chest tightness.
Rising ozone can trigger airway inflammation in active children.
Avoid heavy outdoor work during the hottest part of the day.
Serious lung function reduction likely across the public.
Emergency ozone levels. Risk of permanent lung tissue damage.
Nitrogen levels are optimal. Safe for everyone.
Typical background levels for high-density urban areas.
Increased risk of respiratory infections for vulnerable groups.
Significant airway inflammation likely near traffic zones.
Acute respiratory distress potential. High-risk groups stay indoors.
Toxic concentrations. Immediate health precautions required.
Carbon Monoxide levels are clean and non-toxic.
Acceptable; may affect those with specific heart conditions.
Reduced oxygen delivery to the heart may occur.
Headaches and fatigue may occur in urban canyons.
Significant cardiovascular distress. Mental confusion possible.
Lethal potential. Immediate risk of neurological collapse.
Optimal air quality with no sulfur detection.
Acceptable air; minor odors possible near industry.
Bronchoconstriction possible for active asthmatics.
Respiratory distress likely for the wider population.
Significant wheezing and shortness of breath likely.
Extreme respiratory danger. Significant life risk.
Health & Scientific Resources
→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air qualityHow is this AQI calculated?
The primary Air Quality Index (AQI) shown above is calculated using the US EPA Linear Interpolation formula based on PM2.5 concentration (Fine Particulate Matter).
- Current PM2.5: 9.0 µg/m³
- Calculation: Your city falls into the "Good" category (Category 1).
Is the AQI in Dale City safe today?
Today's AQI is 50, which is categorized as Good. This means the air quality is good for the general population.