Reno Air Quality in July

Across 2019–2025, Reno's July air quality had a median AQI of 64 (Moderate) over 217 monitored days in the Reno, NV area. 4.6% of July days (10 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 88.0% of days. The cleanest July on record here was 2019 (median AQI 48, 0 days above 100) and the worst was 2021 (median 75, 7 days above 100, peak AQI 212).

64
Median AQI
Moderate
4.6%
Days above AQI 100
10 of 217 days
90
90th percentile AQI
worst 1 day in 10
212
Peak AQI
Very Unhealthy
O3
Main pollutant
88.0% of days
25.8%
Good days
56 of 217
  • Good: 25.8%
  • Moderate: 69.6%
  • Unhealthy for Sensitive Groups: 2.8%
  • Unhealthy or worse: 1.8%

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QUICK ANSWER

How is the air in Reno in July?

Moderate on a typical day: median AQI 64 across 2019–2025, with 4.6% of July days above AQI 100. Ground-level ozone is the main driver.

  • 25.8% of July days were Good (AQI 0–50), 69.6% Moderate (51–100).
  • 10 days of 217 reached AQI 101+; the July peak was 212.
  • Best July: 2019; worst July: 2021.

Frequently asked questions

What is the air quality like in Reno in July?

Across 2019–2025, the median daily AQI in Reno in July was 64 (Moderate). 25.8% of days were Good, 69.6% Moderate, and 4.6% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.

Is July a good time for outdoor exercise in Reno?

A typical July day in Reno is Moderate (median AQI 64): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 22 of July days (4.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.

Which pollutant causes Reno's July air quality problems?

Ground-level ozone set the daily AQI on 88.0% of July days in Reno. The highest July AQI recorded in 2019–2025 was 212 (Very Unhealthy), in 2021.

Reno July air quality, year by year

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

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
2019cleanest3148074O3
20203156087O3
2021worst31757212O3
202231611115O3
20233154097O3
202431741108O3
202531611105O3

What July air means in Reno

A typical July day in Reno is Moderate (median AQI 64): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 22 of July days (4.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.

July's median AQI of 64 is above Reno's whole-year median of 50, making it one of the area's dirtier periods. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so Reno runs above the national July norm; 4.6% of its July days topped AQI 100 versus 3.6% nationally (about the same).

July is part of Reno's summer season (June, July, August); the summer page pools all three months.

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 month 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.