Reno Air Quality in Spring

Across 2019–2025, Reno's spring (March–May) air quality had a median AQI of 48 (Good) over 644 monitored days in the Reno, NV area. 0.2% of spring days (1 of 644) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 95.5% of days. The cleanest spring on record here was 2020 (median AQI 45, 0 days above 100) and the worst was 2021 (median 47, 1 day above 100, peak AQI 101).

48
Median AQI
Good
0.2%
Days above AQI 100
1 of 644 days
67
90th percentile AQI
worst 1 day in 10
101
Peak AQI
Unhealthy for Sensitive Groups
O3
Main pollutant
95.5% of days
66.1%
Good days
426 of 644
  • Good: 66.1%
  • Moderate: 33.7%
  • Unhealthy for Sensitive Groups: 0.2%
  • Unhealthy or worse: 0.0%

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QUICK ANSWER

How is the air in Reno in spring?

Good on a typical day: median AQI 48 across 2019–2025, with 0.2% of spring days above AQI 100. Ground-level ozone is the main driver.

  • 66.1% of spring days were Good (AQI 0–50), 33.7% Moderate (51–100).
  • 1 day of 644 reached AQI 101+; the spring peak was 101.
  • Cleanest month: March; worst month: April.

Frequently asked questions

What is the air quality like in Reno in spring?

Across 2019–2025, the median daily AQI in Reno in spring was 48 (Good). 66.1% of days were Good, 33.7% Moderate, and 0.2% 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 Reno?

A typical spring day in Reno sits in the Good range (median AQI 48), 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 Reno's spring air quality problems?

Ground-level ozone set the daily AQI on 95.5% of spring days in Reno. The highest spring AQI recorded in 2019–2025 was 101 (Unhealthy for Sensitive Groups), in 2021.

Reno spring air quality, year by year

Reno spring air quality by year (Reno, NV, EPA AQS daily AQI)

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
20199247071O3
2020cleanest92450100O3
2021worst92471101O3
20229248084O3
20239249090O3
20249248084O3
202592520100O3

What spring air means in Reno

A typical spring day in Reno sits in the Good range (median AQI 48), 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 48 is in line with Reno's whole-year median of 50, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Reno runs above the national Spring norm; 0.2% 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 April the worst (median 48, 0.5% above 100).

Activity-specific thresholds: running, cycling, kids' sports.

Right now in Reno

The latest EPA AirNow observation puts Reno's AQI at 64 (PM2.5). The figures above are multi-year season statistics, not today's reading.

View current Reno air quality →

Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Reno, NV), 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.