Metro area air quality · 2025

Las Vegas-Henderson-Paradise, NV

Median AQI 61 (Moderate). 31.0% of monitored days rated Good across this metro's EPA monitoring network.

61
Median AQI
31.0%
Good-air days
0
Unhealthy days
3%
Cleaner than US metros

Las Vegas-Henderson-Paradise, NV posted a 2025 median AQI of 61 (Moderate) with 31.0% Good days

According to the U.S. EPA Air Quality System, the Las Vegas-Henderson-Paradise, NV CBSA recorded a median AQI of 61 across 365 monitored days in 2025, with 31.0% 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 Las Vegas-Henderson-Paradise, NV CBSA's 31.0% Good-day share places it cleaner than 3% of US metros in 2025.
Closest median-AQI peer
Albuquerque, NM (24.9% Good, median AQI 61) is the closest nationwide median-AQI peer to Las Vegas-Henderson-Paradise, NV.
2020–2025 Good-day shift
Las Vegas-Henderson-Paradise, NV's Good-day share moved +6.6 points from 2020 to 2025 (median AQI -4).
Median AQI
Median AQI: 61

Aggregated from EPA Air Quality System (2025), 365 monitored days. EPA AQS →

The verdict

Las Vegas-Henderson-Paradise, NV lands in the lower Good-day tercile (31.0% Good), a thinner clean-air share than most CBSA peers here. On the EPA scale the metro runs moderate, among the more polluted US metros, with a median AQI of 61 and 31.0% of 365 monitored days in the Good band.

61
median AQI · Moderate
31.0%
days rated Good
3%
cleaner than US metros
138
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
  • Las Vegas-Henderson-Paradise, NV metro's Good-day share rose from 27.5% to 33.3% between the 2024 and 2025 EPA annual releases, a change of +5.8 percentage points.
  • Las Vegas-Henderson-Paradise, NV metro's peak single-day AQI fell from 170 to 138 between the 2024 and 2025 EPA annual releases, a change of -32 points.
  • Las Vegas-Henderson-Paradise, NV metro's median AQI fell from 64 to 61 between the 2024 and 2025 EPA annual releases, a change of -3 points.
  • Las Vegas-Henderson-Paradise, NV metro's Unhealthy-category days fell from 1 to 0 between the 2024 and 2025 EPA annual releases, a change of -1 days.

Compared against 327 monitored days in 2024 and 339 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

Las Vegas-Henderson-Paradise, NV lands in the lower Good-day tercile (31.0% Good), a thinner clean-air share than most CBSA peers here. Signature read: 31.0% Good-day share (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 61 over 365 measured days in 2025 (Moderate / Poor). The monitored-day split lands at 113 Good (31%), 226 Moderate (62%), and 26 Unhealthy-for-Sensitive-Groups (7%). The 90th-percentile AQI finished at 94; the highest single-day reading hit 138 (USG).

Across 2020–2025, Good-day share shifted +6.6 points and median AQI moved -4 (improving). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Albuquerque, NM (24.9% good, AQI 61); Fresno, CA (28.8% good, AQI 61); Las Cruces, NM (27.4% good, AQI 61).

Health effects of air pollution →

Air Quality Summary

Median AQI

61

Moderate

Good Days

31.0%

113 of 365 days

Max AQI

138

USG

Health Grade

Poor

90th pct: 94

AQI Day Breakdown (2025)

Distribution of 365 monitored days across EPA AQI categories.

Good

113

31%

Moderate

226

62%

USG

26

7%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Poor

The Las Vegas-Henderson-Paradise, NV metro area's air quality is rated Poor based on 31.0% good air days. No unhealthy air days were recorded in 2025.

Air quality is acceptable most days, but 26 days reached "Unhealthy for Sensitive Groups". Sensitive groups should monitor real-time conditions at AirNow.gov.

How does the Las Vegas-Henderson-Paradise, NV metro compare?

How Las Vegas-Henderson-Paradise, NV compares

Good-day share worse than typical
Las Vegas-Henderson-Paradise, NV 31.0%
Albuquerque, NM 24.9%
Typical US metro 70.6%
Median AQI worse than typical
Las Vegas-Henderson-Paradise, NV 61
Albuquerque, NM 61
Typical US metro 41
Unhealthy days / yr better than typical
Las Vegas-Henderson-Paradise, NV 0
Albuquerque, NM 3
Typical US metro 1

5-Year Air Quality Trend

Air quality is improving in the Las Vegas-Henderson-Paradise, NV metro. Highest Good-day share: 2025 (33.3%, 113 of 339 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 92 249 3 65
2021 87 244 3 62
2022 71 268 3 64
2023 106 233 1 61
2024 90 236 1 64
2025 113 226 0 61

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Las Vegas-Henderson-Paradise, NV (61).

Albuquerque, NM

Median AQI 61 · 24.9% Good-day share

61

Fresno, CA

Median AQI 61 · 28.8% Good-day share

61

Las Cruces, NM

Median AQI 61 · 27.4% Good-day share

61

Dallas-Fort Worth-Arlington, TX

Median AQI 59 · 28.2% Good-day share

59

Houston-The Woodlands-Sugar Land, TX

Median AQI 63 · 10.1% Good-day share

63

Denver-Aurora-Lakewood, CO

Median AQI 58 · 28.8% Good-day share

58

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Las Vegas-Henderson-Paradise, 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 Las Vegas-Henderson-Paradise, NV have? ▼
In 2025, the Las Vegas-Henderson-Paradise, NV metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 138.
What is the air quality in the Las Vegas-Henderson-Paradise, NV metro area? ▼
The Las Vegas-Henderson-Paradise, NV metro area has a median Air Quality Index (AQI) of 61, rated "Moderate." 31.0% of monitored days (113 out of 365) had good air quality in 2025.
Is air quality in Las Vegas-Henderson-Paradise, NV getting better or worse? ▼
Air quality in the Las Vegas-Henderson-Paradise, NV metro is improving across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2025 at 33.3% (113 of 339 days). Lowest qualifying Good-day share: 2022 at 20.8% (71 of 342 days).
What does AQI 61 mean for health? ▼
An AQI of 61 is "Moderate", air quality is acceptable, but some pollutants may pose a moderate health concern for a small number of sensitive individuals.
How does Las Vegas-Henderson-Paradise, NV compare to other metro areas? ▼
The Las Vegas-Henderson-Paradise, NV metro has 31.0% good air days. Similar metros: Albuquerque, NM (24.9% good), Fresno, CA (28.8% good), Las Cruces, NM (27.4% good).
What is the 90th percentile AQI for Las Vegas-Henderson-Paradise, NV? ▼
The 90th percentile AQI for the Las Vegas-Henderson-Paradise, NV metro area is 94, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 138 (USG).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Las Vegas-Henderson-Paradise, 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, Las Vegas-Henderson-Paradise, NV · 2020–2025