Danville, California Air Quality
Danville has a median AQI of 48, earning an air quality grade of B+ — good air quality that ranks better than 18% of US cities. Air quality has remained relatively stable over the past decade. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2024, Danville recorded 193 good air quality days (53% of monitored days).
Population: 43,401 • County: Contra Costa
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Quick Facts
| Current AQI | 16 — Good |
| Air Quality Grade | B+ |
| Median AQI (2024) | 48 |
| vs. U.S. Cities | Better than 18% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2024 Air Quality Summary
Primary Pollutant Days (2024)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Danville Air Quality
What is the air quality in Danville today?
The current AQI in Danville is 16, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Danville getting better or worse?
Air quality in Danville has remained relatively stable over the past decade, with a median AQI of around 48.
What is the most common air pollutant in Danville?
PM2.5 is the primary air pollutant in Danville, responsible for the most air quality-impacted days in 2024. Particulate matter can originate from vehicle exhaust, wildfires, and industrial emissions.
How many unhealthy air days does Danville have per year?
In 2024, Danville had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 193 good days and 168 moderate days out of 361 days monitored.
What air quality grade does Danville receive?
Danville receives an air quality grade of B+, placing it better than 18% of US cities. This grade is based on a median AQI of 48 for 2024, derived from EPA monitoring data.
Air Quality Grade
Better than 18% of US cities
Nearby Cities
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National Rankings
See how Danville compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Danville
Based on your area's air quality (median AQI: 48), we recommend these air purifiers to help protect your health indoors.
RabbitAir MinusA2
Stylish wall-mountable design with customizable artwork panels.
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Other Great Options
Molekule Air Pro
Commercial-grade with patented PECO technology for destroying pollutants.
Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Dyson Pure Cool TP04
Premium all-in-one air purifier and fan with advanced features.
Not sure which air purifier is right for you?
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Read our complete buying guide →