Wildomar, California Air Quality
Wildomar has a median AQI of 87, 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, Wildomar recorded 29 good air quality days (11% of monitored days) and 101 unhealthy days.
Population: 37,277 • County: Riverside
Current AQI
Quick Facts
| Current AQI | 51 — Moderate |
| Air Quality Grade | F |
| Median AQI (2025) | 87 |
| vs. U.S. Cities | Better than 0% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 101 |
| 10-Year Trend | ↓ Worsening |
| Data Source | EPA AQS (historical) · AirNow (live) |
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 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Wildomar is sourced from the Lake Elsinore - W. Flint Street monitoring area, located approximately 6 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Wildomar 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
Wildomar Median AQI by Year
Annual EPA air quality data for Wildomar — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 87 | 29 | 102 | 365 | Ozone |
| 2024 | 87 | 43 | 147 | 213 | Ozone |
| 2023 | 79 | 62 | 116 | 660 | Ozone |
| 2022 | 77 | 41 | 126 | 1683 | Ozone |
| 2021 | 89 | 19 | 136 | 329 | Ozone |
| 2020 | 87 | 42 | 145 | 584 | Ozone |
| 2019 | 77 | 53 | 120 | 185 | Ozone |
| 2018 | 87 | 32 | 140 | 296 | Ozone |
| 2017 | 87 | 26 | 151 | 359 | Ozone |
| 2016 | 83 | 23 | 129 | 379 | Ozone |
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 Wildomar Air Quality
What is the air quality in Wildomar today?
The current AQI in Wildomar is 51, rated "Moderate". Air quality is moderate — unusually sensitive individuals may want to limit prolonged outdoor exertion. Air quality is acceptable. However, there may be a risk for some people who are unusually sensitive to air pollution.
Is air quality in Wildomar getting better or worse?
Air quality in Wildomar has been worsening. The median AQI has risen 4 points (from 83 in 2016 to 87 in 2025), a concern for local health officials.
What is the most common air pollutant in Wildomar?
Ozone is the primary air pollutant in Wildomar, responsible for 184 days (67% 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 Wildomar have per year?
In 2025, Wildomar recorded 11% good air quality days (29 days) out of 274 monitored days. There were 69 Unhealthy for Sensitive Groups days and 32 Unhealthy days (AQI above 100). The most severe category (Very Unhealthy or Hazardous) occurred on 1 day. The highest single-day AQI recorded was 365.
What air quality grade does Wildomar receive?
Wildomar receives an air quality grade of F, placing it better than 0% of US cities. This is based on a median AQI of 87 in 2025, with 29 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 0% of US cities
Nearby Cities
Protect Your Health
With a median AQI of 87, indoor air purification is recommended
See Recommended Purifiers ↓Get AQI Alerts
Receive notifications when air quality changes in Wildomar
National Rankings
See how Wildomar compares to every other US city by air quality.
Most Polluted Cities →All city rankingsRecommended Air Purifiers for Wildomar
Wildomar 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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