Garden Grove, California Air Quality
Garden Grove air quality today — the AQI, the main pollutant, and whether it’s safe to exercise outside right now
Garden Grove, CA · Air quality right now
The air quality index in Garden Grove, CA is 49 (Good) right now — safe for outdoor activity.
Is it safe to be outside in Garden Grove today?
AQI 49 Yes — air quality is Good
Air is clean — great for outdoor activity.Main pollutant: PM2.5Observed 6:00 AM PDT
Pollutants right now
- PM2.511 µg/m³Main pollutantfine particles — smoke, exhaust, soot
- PM1016 µg/m³coarse particles — dust, pollen, ash
- Ozone81 µg/m³smog — builds on hot, sunny days
- NO₂12 µg/m³nitrogen dioxide — traffic, combustion
ExerciseOK to run — no air-quality limits on outdoor exercise.
How to read Garden Grove’s air quality
Guides: The AQI Scale, Explained · Air Quality Alerts, Decoded · How to Read a Wildfire Smoke Map · Why Wildfire Smoke Travels 1,000 Miles.
Air quality over time in Garden Grove
Across the EPA’s county records from 2020 to 2025, Garden Grove’s cleanest year was 2023 (median AQI 52) and its most polluted was 2020 (median AQI 56); the typical (median) day has held roughly steady since 2020.
| Year | Median AQI | Unhealthy+ | Main pollutant | USG | Moderate | Good |
|---|---|---|---|---|---|---|
| 2020 | 56 | 13 | PM2.5 | 28 | 207 | 118 |
| 2021 | 55 | 0 | PM2.5 | 18 | 238 | 109 |
| 2022 | 53 | 2 | PM2.5 | 5 | 215 | 143 |
| 2023 | 52 | 1 | PM2.5 | 9 | 195 | 160 |
| 2024 | 54 | 3 | PM2.5 | 13 | 231 | 119 |
| 2025 | 53 | 2 | PM2.5 | 11 | 214 | 138 |
“USG” is Unhealthy for Sensitive Groups (AQI 101–150); “Unhealthy+” combines the Unhealthy, Very Unhealthy, and Hazardous days. In 2024 the EPA tightened the annual fine-particle (PM2.5) standard to 9 µg/m³ from the previous 12 µg/m³, so counties near the old limit read worse against the new one. Source: EPA AQS annual summaries, 2020–2025.
Frequently asked
- What was the worst year for air quality in Garden Grove?
- In the EPA's 2020–2025 county records, 2020 had the most days above AQI 100: 41 days (28 Unhealthy for Sensitive Groups, 13 Unhealthy or worse). It also had the highest median AQI, 56.
- How many unhealthy air days does Garden Grove have?
- Across 2020–2025, 5% of the days reported for Garden Grove's county had an AQI above 100 (105 of 2192), about 18 days a year. 2025 had 13 days.
- What's the main air pollutant in Garden Grove?
- PM2.5: it drove Garden Grove's county AQI on the most days in every year of the EPA's 2020–2025 records.