Irvine Air Quality in 2024
In 2024, Irvine's air quality (Los Angeles-Long Beach-Anaheim, CA area) had a median daily AQI of 80 (Moderate) across 366 monitored days. 134 days (36.6%) reached Unhealthy for Sensitive Groups or worse, 37 were Good, and the year's peak AQI was 230 (Very Unhealthy). Ground-level ozone set the daily AQI on 197 of those days. The cleanest month of 2024 was March (median AQI 48, 0 days above 100) and the worst was July (median 156, 31 days above 100, peak 230).
- Good: 10.1%
- Moderate: 53.3%
- Unhealthy for Sensitive Groups: 21.3%
- Unhealthy or worse: 15.3%
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How was Irvine's air quality in 2024?
Moderate on a typical day: median AQI 80, with 134 days above AQI 100 out of 366 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 230 (Very Unhealthy).
- ✓Ground-level ozone was the main pollutant on 197 days.
- ✓Cleanest month: March; worst: July.
Frequently asked questions
What was the average AQI in Irvine in 2024?▾
EPA's Air Quality System puts Irvine's (Los Angeles-Long Beach-Anaheim, CA) median daily AQI for 2024 at 80, which is Moderate. 134 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 230.
Which month had the worst air quality in Irvine in 2024?▾
The cleanest month of 2024 was March (median AQI 48, 0 days above 100) and the worst was July (median 156, 31 days above 100, peak 230).
Was 2024 a good or bad year for Irvine's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 6th cleanest by days above AQI 100. 2024's median of 80 is above the area's typical annual median of 74.
Irvine month by month in 2024
Irvine air quality month by month, 2024 (Los Angeles-Long Beach-Anaheim, CA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 67 | 1 | 104 | PM2.5 |
| February | 29 | 56 | 0 | 85 | PM2.5 |
| Marchcleanest | 31 | 48 | 0 | 84 | PM2.5 |
| April | 30 | 61 | 3 | 140 | O3 |
| May | 31 | 77 | 4 | 119 | O3 |
| June | 30 | 117 | 20 | 202 | O3 |
| Julyworst | 31 | 156 | 31 | 230 | O3 |
| August | 31 | 140 | 26 | 202 | O3 |
| September | 30 | 122 | 23 | 209 | O3 |
| October | 31 | 101 | 16 | 203 | O3 |
| November | 30 | 64 | 1 | 108 | PM2.5 |
| December | 31 | 82 | 9 | 155 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 6th cleanest by days above AQI 100.
2024's median of 80 is above the area's typical annual median of 74.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Irvine
The latest EPA AirNow observation puts Irvine's AQI at 48 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Irvine air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Los Angeles-Long Beach-Anaheim, CA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.