Metro area air quality · 2025

Roswell, NM

Median AQI 29 (Good). 91.9% of monitored days rated Good across this metro's EPA monitoring network.

Compiled by PlainAirData · August 23, 2026

29
Median AQI: 91.9%
Good-air days: 0
Unhealthy days

Roswell, NM posted a 2025 median AQI of 29 (Good) with 91.9% Good days

According to the U.S. EPA Air Quality System, the Roswell, NM CBSA recorded a median AQI of 29 across 86 monitored days in 2025, with 91.9% rated Good and 0 unhealthy or worse. This is an annual metro comparison, not a live advisory.

Data source EPA Air Quality System (AQS)

Closest median-AQI peer: Port Angeles, WA (85.5% Good, median AQI 29) is the closest nationwide median-AQI peer to Roswell, NM.
2020–2025 Good-day shift: Roswell, NM's Good-day share moved +3.3 points from 2020 to 2025 (median AQI +6).
Median AQI: Median AQI: 29
Good days: Good days: 91.9%

Aggregated from EPA Air Quality System (2025), 86 monitored days. EPA AQS →

The verdict

Roswell, NM sits in the upper Good-day tercile among EPA CBSA metros on this site (91.9% of 86 monitored days). On the EPA scale the metro runs good, with a median AQI of 29 and 91.9% of 86 monitored days in the Good band.

29
median AQI · Good: 91.9%
days rated Good: 117
worst single reading

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

Roswell, NM metro's peak single-day AQI rose from 75 to 88 between the 2023 and 2024 EPA annual releases, a change of +13 points.
Roswell, NM metro's median AQI rose from 24 to 27 between the 2023 and 2024 EPA annual releases, a change of +3 points.

Roswell, NM sits in the upper Good-day tercile among EPA CBSA metros on this site (91.9% of 86 monitored days). Signature read: 91.9% 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 29 over 86 measured days in 2025 (Good / Excellent). The monitored-day split lands at 79 Good (92%), 5 Moderate (6%), and 2 Unhealthy-for-Sensitive-Groups (2%). The 90th-percentile AQI finished at 47; the highest single-day reading hit 117 (USG).

Across 2020–2025, Good-day share shifted +3.3 points and median AQI moved +6 (stable). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Port Angeles, WA (85.5% good, AQI 29); Urban Honolulu, HI (97.3% good, AQI 29); Butte-Silver Bow, MT (84.9% good, AQI 28).

Best and worst city air quality →

Air Quality Summary

Median AQI

Good

Good Days

91.9%

79 of 86 days

Max AQI

117

USG

Health Grade

Excellent

90th pct: 47

AQI Day Breakdown (2025)

Distribution of 86 monitored days across EPA AQI categories.

Good

92%

Moderate

USG

Unhealthy

Very Unhealthy

Hazardous

Health Impact Assessment

Excellent

The Roswell, NM metro area's air quality is rated Excellent based on 91.9% 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 Roswell, NM metro compare?

How Roswell, NM compares

Compare against

Good-day share better than typical

Roswell, NM 91.9%

Port Angeles, WA 85.5%

Typical US metro 70.6%

Median AQI better than typical

Roswell, NM 29

Port Angeles, WA 29

Typical US metro 41

Unhealthy days / yr better than typical

Roswell, NM 0

Port Angeles, WA 0

Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Roswell, NM metro. Highest Good-day share: 2024 (91.2%, 104 of 114 monitored days).

Year	Good	Moderate	Median AQI	Max AQI
2020	108	11	23	78
2021	110	11	24	74
2022	108	13	26	64
2023	107	11	24	75
2024	104	10	27	88
2025	79	5	29	117

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Roswell, NM (29).

Port Angeles, WA

Median AQI 29 · 85.5% Good-day share

Urban Honolulu, HI

Median AQI 29 · 97.3% Good-day share

Butte-Silver Bow, MT

Median AQI 28 · 84.9% Good-day share

Cookeville, TN

Median AQI 30 · 90.0% Good-day share

Dodge City, KS

Median AQI 28 · 89.8% Good-day share

Lynchburg, VA

Median AQI 30 · 85.2% Good-day share

Metros with similar unhealthy-day exposure

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

Aberdeen, SD

0 unhealthy-or-worse days · median AQI 27

Aberdeen, WA

0 unhealthy-or-worse days · median AQI 22

Adrian, MI

0 unhealthy-or-worse days · median AQI 41

Akron, OH

0 unhealthy-or-worse days · median AQI 45

Albany, GA

0 unhealthy-or-worse days · median AQI 46

Albany, OR

0 unhealthy-or-worse days · median AQI 27

Frequently Asked Questions

How many unhealthy air days does Roswell, NM have? ▼

In 2025, the Roswell, NM metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 117.

What is the air quality in the Roswell, NM metro area? ▼

The Roswell, NM metro area has a median Air Quality Index (AQI) of 29, rated "Good." 91.9% of monitored days (79 out of 86) had good air quality in 2025.

Is air quality in Roswell, NM getting better or worse? ▼

Air quality in the Roswell, NM metro is stable across floor-qualifying years (2020-2024); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2024 at 91.2% (104 of 114 days). Lowest qualifying Good-day share: 2022 at 89.3% (108 of 121 days).

What does AQI 29 mean for health? ▼

An AQI of 29 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 Roswell, NM compare to other metro areas? ▼

The Roswell, NM metro has 91.9% good air days. Similar metros: Port Angeles, WA (85.5% good), Urban Honolulu, HI (97.3% good), Butte-Silver Bow, MT (84.9% good).

What is the 90th percentile AQI for Roswell, NM? ▼

The 90th percentile AQI for the Roswell, NM metro area is 47, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 117 (USG).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Roswell, NM, 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, Roswell, NM · 2020–2025 Accessed 2026-07-06