Joshua Tree, California Air Quality
Joshua Tree has a median AQI of 90, earning an air quality grade of F — poor air quality that ranks better than 0% of US cities. Air quality has been trending worse over the past decade, a concern for local residents and health officials. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2025, Joshua Tree recorded 34 good air quality days (12% of monitored days) and 99 unhealthy days.
Population: 6,234 • County: San Bernardino
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Quick Facts
| Current AQI | 15 — Good |
| Air Quality Grade | F |
| Median AQI (2025) | 90 |
| vs. U.S. Cities | Better than 0% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 99 |
| 10-Year Trend | ↓ Worsening |
| 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
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Joshua Tree Air Quality
What is the air quality in Joshua Tree today?
The current AQI in Joshua Tree is 15, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Joshua Tree getting better or worse?
Air quality in Joshua Tree has been worsening in recent years. The median AQI rose from 84 in 2016 to 90 in 2025.
What is the most common air pollutant in Joshua Tree?
Ozone is the primary air pollutant in Joshua Tree, responsible for the most air quality-impacted days in 2025. Ground-level ozone forms when sunlight reacts with vehicle and industrial emissions on warm days.
How many unhealthy air days does Joshua Tree have per year?
In 2025, Joshua Tree had 99 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 34 good days and 137 moderate days out of 274 days monitored.
What air quality grade does Joshua Tree receive?
Joshua Tree receives an air quality grade of F, placing it better than 0% of US cities. This grade is based on a median AQI of 90 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 0% of US cities
Nearby Cities
Protect Your Health
With a median AQI of 90, indoor air purification is recommended
See Recommended Purifiers ↓Get AQI Alerts
Receive notifications when air quality changes in Joshua Tree
National Rankings
See how Joshua Tree compares to every other US city by air quality.
Most Polluted Cities →All city rankingsRecommended Air Purifiers for Joshua Tree
Based on your area's air quality (median AQI: 90), we recommend these air purifiers to help protect your health indoors.
Honeywell HPA300
Powerful workhorse for large rooms. Built to last.
- ✓Perfect room size match
- ✓Recommended for your air quality
- ✓Has 1/3 desired features
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Other Great Options
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.
Molekule Air Pro
Commercial-grade with patented PECO technology for destroying pollutants.
Not sure which air purifier is right for you?
Learn more about different types of air purifiers and how to choose the best one for your needs.
Read our complete buying guide →