Imperial Beach, California Air Quality
Imperial Beach has a median AQI of 54, earning an air quality grade of B — good air quality that ranks better than 5% of US cities. Air quality has been improving steadily over the past decade, a positive sign for residents. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2025, Imperial Beach recorded 116 good air quality days (43% of monitored days) and 20 unhealthy days.
Population: 25,764 • County: San Diego
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Quick Facts
| Current AQI | 65 — Moderate |
| Air Quality Grade | B |
| Median AQI (2025) | 54 |
| vs. U.S. Cities | Better than 5% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 20 |
| 10-Year Trend | ↑ Improving |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is acceptable. However, there may be a risk for some people who are unusually sensitive to air pollution.
Unusually sensitive people should consider reducing prolonged or heavy outdoor exertion.
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 Imperial Beach Air Quality
What is the air quality in Imperial Beach today?
The current AQI in Imperial Beach is 65, which is rated "Moderate". Air quality is acceptable. However, there may be a risk for some people who are unusually sensitive to air pollution.
Is air quality in Imperial Beach getting better or worse?
Air quality in Imperial Beach has been improving over the past decade. The median AQI dropped from 68 in 2016 to 54 in 2025.
What is the most common air pollutant in Imperial Beach?
Ozone is the primary air pollutant in Imperial Beach, 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 Imperial Beach have per year?
In 2025, Imperial Beach had 20 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 116 good days and 136 moderate days out of 272 days monitored.
What air quality grade does Imperial Beach receive?
Imperial Beach receives an air quality grade of B, placing it better than 5% of US cities. This grade is based on a median AQI of 54 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 5% of US cities
Nearby Cities
Protect Your Health
With a median AQI of 54, indoor air purification is recommended
See Recommended Purifiers ↓Get AQI Alerts
Receive notifications when air quality changes in Imperial Beach
National Rankings
See how Imperial Beach compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Imperial Beach
Based on your area's air quality (median AQI: 54), 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 1/1 desired features
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Other Great Options
Blueair Blue Pure 211+
High performance for large rooms with simple operation.
RabbitAir MinusA2
Stylish wall-mountable design with customizable artwork panels.
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 →