Reno Air Quality in October
Across 2019–2025, Reno's October air quality had a median AQI of 46 (Good) over 217 monitored days in the Reno, NV area. 0.5% of October days (1 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 51.6% of days. The cleanest October on record here was 2019 (median AQI 44, 0 days above 100) and the worst was 2020 (median 53, 1 day above 100, peak AQI 118).
- Good: 64.1%
- Moderate: 35.5%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
Extra Protection for Reno Homes
Air quality in Reno is moderate (AQI 64), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Recommended: Coway AP-1512HH Mighty — True HEPA + carbon · CADR ~246 CFM · rooms up to 361 sq ft
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How is the air in Reno in October?
Good on a typical day: median AQI 46 across 2019–2025, with 0.5% of October days above AQI 100. Ground-level ozone is the main driver.
- ✓64.1% of October days were Good (AQI 0–50), 35.5% Moderate (51–100).
- ✓1 day of 217 reached AQI 101+; the October peak was 118.
- ✓Best October: 2019; worst October: 2020.
Frequently asked questions
What is the air quality like in Reno in October?▾
Across 2019–2025, the median daily AQI in Reno in October was 46 (Good). 64.1% of days were Good, 35.5% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is October a good time for outdoor exercise in Reno?▾
A typical October day in Reno sits in the Good range (median AQI 46), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of October days reached AQI 101+ in 2019–2025.
Which pollutant causes Reno's October air quality problems?▾
Ground-level ozone set the daily AQI on 51.6% of October days in Reno. The highest October AQI recorded in 2019–2025 was 118 (Unhealthy for Sensitive Groups), in 2020.
Reno October air quality, year by year
Reno October air quality by year (Reno, NV, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 31 | 44 | 0 | 67 | O3 |
| 2020worst | 31 | 53 | 1 | 118 | PM2.5 |
| 2021 | 31 | 45 | 0 | 72 | O3 |
| 2022 | 31 | 51 | 0 | 78 | PM2.5 |
| 2023 | 31 | 44 | 0 | 63 | PM2.5 |
| 2024 | 31 | 48 | 0 | 67 | O3 |
| 2025 | 31 | 44 | 0 | 64 | PM2.5 |
What October air means in Reno
A typical October day in Reno sits in the Good range (median AQI 46), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of October days reached AQI 101+ in 2019–2025.
October's median AQI of 46 is below Reno's whole-year median of 50, making it one of the area's cleaner periods. Nationally, the median October AQI across every EPA metro area (102,872 metro-days, 2019–2025) is 38, so Reno runs above the national October norm; 0.5% of its October days topped AQI 100 versus 1.3% nationally (about the same).
October is part of Reno's fall season (September, October, November); the fall 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.