Channel Islands Beach, California Air Quality
Channel Islands Beach has a median AQI of 50, earning an air quality grade of B+ — good air quality that ranks better than 13% 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, Channel Islands Beach recorded 144 good air quality days (53% of monitored days) and 8 unhealthy days.
Population: 2,726 • County: Ventura
Current AQI
Quick Facts
| Current AQI | 50 — Good |
| Air Quality Grade | B+ |
| Median AQI (2025) | 50 |
| vs. U.S. Cities | Better than 13% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 8 |
| 10-Year Trend | ↑ Improving |
| Data Source | EPA AQS (historical) · AirNow (live) |
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 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Channel Islands Beach is sourced from the El Rio - Rio Mesa School #2 monitoring area, located approximately 8 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Channel Islands Beach typically sees its worst air quality during summer afternoons when heat and sunlight drive ground-level ozone formation from vehicle and industrial emissions. Morning readings are generally 15–25 points lower than afternoon peaks. Outdoor activity is best planned for early morning on high-ozone days.
AQI Trend (10 Years)
Air Quality Days by Year
Channel Islands Beach Median AQI by Year
Annual EPA air quality data for Channel Islands Beach — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 50 | 144 | 8 | 131 | Ozone |
| 2024 | 50 | 191 | 15 | 176 | Ozone |
| 2023 | 46 | 220 | 12 | 136 | Ozone |
| 2022 | 52 | 171 | 11 | 140 | Ozone |
| 2021 | 53 | 157 | 10 | 122 | Ozone |
| 2020 | 50 | 185 | 26 | 174 | Ozone |
| 2019 | 51 | 175 | 9 | 126 | Ozone |
| 2018 | 57 | 94 | 17 | 166 | PM2.5 |
| 2017 | 57 | 117 | 33 | 961 | PM2.5 |
| 2016 | 56 | 120 | 9 | 147 | PM2.5 |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
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 Channel Islands Beach Air Quality
What is the air quality in Channel Islands Beach today?
The current AQI in Channel Islands Beach is 50, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Channel Islands Beach getting better or worse?
Air quality in Channel Islands Beach has been improving. The median AQI has dropped 6 points (from 56 in 2016 to 50 in 2025), a positive trend for residents.
What is the most common air pollutant in Channel Islands Beach?
Ozone is the primary air pollutant in Channel Islands Beach, responsible for 160 days (59% of monitored days) in 2025. Ground-level ozone forms when sunlight reacts with emissions from vehicles and industry, typically peaking on hot summer afternoons.
How many unhealthy air days does Channel Islands Beach have per year?
In 2025, Channel Islands Beach recorded 53% good air quality days (144 days) out of 273 monitored days. There were 8 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 131.
What air quality grade does Channel Islands Beach receive?
Channel Islands Beach receives an air quality grade of B+, placing it better than 13% of US cities. This is based on a median AQI of 50 in 2025, with 144 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 13% of US cities
Nearby Cities
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National Rankings
See how Channel Islands Beach compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Channel Islands Beach
Channel Islands Beach has a summer ozone problem — hot afternoons push AQI into Moderate or higher as sunlight converts vehicle and industrial emissions into ground-level ozone. Activated carbon and PECO filters chemically neutralize ozone rather than just trapping particles.
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