Metro area air quality · 2025

Fallon, NV

Median AQI 40 (Good). 85.2% of monitored days rated Good across this metro's EPA monitoring network.

40
Median AQI
85.2%
Good-air days
0
Unhealthy days
78%
Cleaner than US metros

Fallon, NV posted a 2025 median AQI of 40 (Good) with 85.2% Good days

According to the U.S. EPA Air Quality System, the Fallon, NV CBSA recorded a median AQI of 40 across 344 monitored days in 2025, with 85.2% rated Good and 0 unhealthy or worse. This is an annual metro comparison, not a live advisory.

Data source EPA Air Quality System (AQS)

Cleaner than US metros
The Fallon, NV CBSA's 85.2% Good-day share places it cleaner than 78% of US metros in 2025.
Closest median-AQI peer
Altoona, PA (76.9% Good, median AQI 40) is the closest nationwide median-AQI peer to Fallon, NV.
2020–2025 Good-day shift
Fallon, NV's Good-day share moved -7.9 points from 2020 to 2025 (median AQI +0).
Median AQI
Median AQI: 40

Aggregated from EPA Air Quality System (2025), 344 monitored days. EPA AQS →

The verdict

Fallon, NV sits in the upper Good-day tercile among EPA CBSA metros on this site (85.2% of 344 monitored days). On the EPA scale the metro runs good, cleaner than most US metros, with a median AQI of 40 and 85.2% of 344 monitored days in the Good band.

40
median AQI · Good
85.2%
days rated Good
78%
cleaner than US metros
77
worst single reading

No day crossed into the Unhealthy tier across the metro's monitors in 2025.

Annual release change

What changed in the 2025 EPA annual release

2024 → 2025
  • Fallon, NV metro's Good-day share rose from 78.4% to 85.2% between the 2024 and 2025 EPA annual releases, a change of +6.7 percentage points.
  • Fallon, NV metro's peak single-day AQI fell from 105 to 77 between the 2024 and 2025 EPA annual releases, a change of -28 points.
  • Fallon, NV metro's median AQI fell from 44 to 40 between the 2024 and 2025 EPA annual releases, a change of -4 points.

Compared against 357 monitored days in 2024 and 344 in 2025. These are arithmetic differences between two stored EPA annual summaries, not a cause claim or a live advisory.

National release changes Two-year CSV

Fallon, NV sits in the upper Good-day tercile among EPA CBSA metros on this site (85.2% of 344 monitored days). Signature read: 85.2% Good-day share (high tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 40 over 344 measured days in 2025 (Good / Good). The monitored-day split lands at 293 Good (85%), 51 Moderate (15%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 54; the highest single-day reading hit 77 (Moderate).

Across 2020–2025, Good-day share shifted -7.9 points and median AQI moved +0 (worsening). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Altoona, PA (76.9% good, AQI 40); Beaver Dam, WI (72.3% good, AQI 40); Bismarck, ND (76.7% good, AQI 40).

Best and worst city air quality →

Air Quality Summary

Median AQI

40

Good

Good Days

85.2%

293 of 344 days

Max AQI

77

Moderate

Health Grade

Good

90th pct: 54

AQI Day Breakdown (2025)

Distribution of 344 monitored days across EPA AQI categories.

Good

293

85%

Moderate

51

15%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Fallon, NV metro area's air quality is rated Good based on 85.2% good air days. No unhealthy air days were recorded in 2025.

Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.

How does the Fallon, NV metro compare?

How Fallon, NV compares

Good-day share better than typical
Fallon, NV 85.2%
Altoona, PA 76.9%
Typical US metro 70.6%
Median AQI better than typical
Fallon, NV 40
Altoona, PA 40
Typical US metro 41
Unhealthy days / yr better than typical
Fallon, NV 0
Altoona, PA 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is worsening in the Fallon, NV metro. Highest Good-day share: 2022 (94.6%, 330 of 349 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 336 25 0 40
2021 271 81 1 44
2022 330 19 0 39
2023 295 59 0 43
2024 280 77 0 44
2025 293 51 0 40

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Fallon, NV (40).

Altoona, PA

Median AQI 40 · 76.9% Good-day share

40

Beaver Dam, WI

Median AQI 40 · 72.3% Good-day share

40

Bismarck, ND

Median AQI 40 · 76.7% Good-day share

40

Cape Coral-Fort Myers, FL

Median AQI 40 · 76.4% Good-day share

40

College Station-Bryan, TX

Median AQI 40 · 68.5% Good-day share

40

Fayetteville-Springdale-Rogers, AR-MO

Median AQI 40 · 83.3% Good-day share

40

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Fallon, NV's 0 (independent of median AQI).

Aberdeen, SD

0 unhealthy-or-worse days · median AQI 27

27

Aberdeen, WA

0 unhealthy-or-worse days · median AQI 22

22

Adrian, MI

0 unhealthy-or-worse days · median AQI 41

41

Akron, OH

0 unhealthy-or-worse days · median AQI 45

45

Albany, GA

0 unhealthy-or-worse days · median AQI 46

46

Albany, OR

0 unhealthy-or-worse days · median AQI 27

27

Frequently Asked Questions

How many unhealthy air days does Fallon, NV have? ▼
In 2025, the Fallon, NV metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 77.
What is the air quality in the Fallon, NV metro area? ▼
The Fallon, NV metro area has a median Air Quality Index (AQI) of 40, rated "Good." 85.2% of monitored days (293 out of 344) had good air quality in 2025.
Is air quality in Fallon, NV getting better or worse? ▼
Air quality in the Fallon, NV metro is worsening across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2022 at 94.6% (330 of 349 days). Lowest qualifying Good-day share: 2021 at 76.8% (271 of 353 days).
What does AQI 40 mean for health? ▼
An AQI of 40 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
How does Fallon, NV compare to other metro areas? ▼
The Fallon, NV metro has 85.2% good air days. Similar metros: Altoona, PA (76.9% good), Beaver Dam, WI (72.3% good), Bismarck, ND (76.7% good).
What is the 90th percentile AQI for Fallon, NV? ▼
The 90th percentile AQI for the Fallon, NV metro area is 54, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 77 (Moderate).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Fallon, NV, 2025. See our methodology for how AQI, median, and coverage figures are computed.

Read our methodology , how this data is sourced, computed, and verified.

Source: U.S. EPA Air Quality System (AQS) Annual AQI by CBSA summary, Fallon, NV · 2020–2025