Sacramento Air Quality in Spring
Across 2019–2025, Sacramento's spring (March–May) air quality had a median AQI of 49 (Good) over 644 monitored days in the Sacramento--Roseville--Arden-Arcade, CA area. 0.8% of spring days (5 of 644) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 75.5% of days. The cleanest spring on record here was 2022 (median AQI 48, 0 days above 100) and the worst was 2021 (median 53, 2 days above 100, peak AQI 122).
- Good: 55.9%
- Moderate: 43.3%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 0.0%
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How is the air in Sacramento in spring?
Good on a typical day: median AQI 49 across 2019–2025, with 0.8% of spring days above AQI 100. Ground-level ozone is the main driver.
- ✓55.9% of spring days were Good (AQI 0–50), 43.3% Moderate (51–100).
- ✓5 days of 644 reached AQI 101+; the spring peak was 122.
- ✓Cleanest month: March; worst month: May.
Frequently asked questions
What is the air quality like in Sacramento in spring?▾
Across 2019–2025, the median daily AQI in Sacramento in spring was 49 (Good). 55.9% of days were Good, 43.3% Moderate, and 0.8% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in Sacramento?▾
A typical spring day in Sacramento sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Which pollutant causes Sacramento's spring air quality problems?▾
Ground-level ozone set the daily AQI on 75.5% of spring days in Sacramento. The highest spring AQI recorded in 2019–2025 was 122 (Unhealthy for Sensitive Groups), in 2021.
Sacramento spring air quality, year by year
Sacramento spring air quality by year (Sacramento--Roseville--Arden-Arcade, CA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 50 | 0 | 92 | O3 |
| 2020 | 92 | 47 | 1 | 101 | O3 |
| 2021worst | 92 | 53 | 2 | 122 | O3 |
| 2022cleanest | 92 | 48 | 0 | 100 | O3 |
| 2023 | 92 | 49 | 2 | 112 | O3 |
| 2024 | 92 | 49 | 0 | 100 | O3 |
| 2025 | 92 | 50 | 0 | 93 | O3 |
What spring air means in Sacramento
A typical spring day in Sacramento sits in the Good range (median AQI 49), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Spring's median AQI of 49 is below Sacramento's whole-year median of 58, making it one of the area's cleaner periods. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Sacramento runs above the national Spring norm; 0.8% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).
Within the season, March is the cleanest month (median AQI 46, 0.0% of days above 100) and May the worst (median 54, 1.4% above 100).
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Sacramento
The latest EPA AirNow observation puts Sacramento's AQI at 43 (PM2.5). The figures above are multi-year season statistics, not today's reading.
View current Sacramento air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Sacramento--Roseville--Arden-Arcade, 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.