Metro area air quality · 2025
Bremerton-Silverdale, WA
Median AQI 22 (Good). 95.5% of monitored days rated Good across this metro's EPA monitoring network.
- 22
- Median AQI
- 95.5%
- Good-air days
- 0
- Unhealthy days
- 96%
- Cleaner than US metros
Bremerton-Silverdale, WA posted a 2025 median AQI of 22 (Good) with 95.5% Good days
According to the U.S. EPA Air Quality System, the Bremerton-Silverdale, WA CBSA recorded a median AQI of 22 across 356 monitored days in 2025, with 95.5% 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 Bremerton-Silverdale, WA CBSA's 95.5% Good-day share places it cleaner than 96% of US metros in 2025.
- Closest median-AQI peer
- Aberdeen, WA (97.3% Good, median AQI 22) is the closest nationwide median-AQI peer to Bremerton-Silverdale, WA.
- 2020–2025 Good-day shift
- Bremerton-Silverdale, WA's Good-day share moved +4.3 points from 2020 to 2025 (median AQI -1).
- Median AQI
- Median AQI: 22
Aggregated from EPA Air Quality System (2025), 356 monitored days. EPA AQS →
The verdict
Bremerton-Silverdale, WA sits in the upper Good-day tercile among EPA CBSA metros on this site (95.5% of 356 monitored days). On the EPA scale the metro runs good, among the cleanest 10% of US metros, with a median AQI of 22 and 95.5% of 356 monitored days in the Good band.
- 22
- median AQI · Good
- 95.5%
- days rated Good
- 96%
- cleaner than US metros
- 61
- 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
- Bremerton-Silverdale, WA metro's Good-day share fell from 97.2% to 95.5% between the 2024 and 2025 EPA annual releases, a change of -1.6 percentage points.
- Bremerton-Silverdale, WA metro's median AQI rose from 19 to 22 between the 2024 and 2025 EPA annual releases, a change of +3 points.
Bremerton-Silverdale, WA sits in the upper Good-day tercile among EPA CBSA metros on this site (95.5% of 356 monitored days). Signature read: 95.5% 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 22 over 356 measured days in 2025 (Good / Excellent). The monitored-day split lands at 340 Good (96%), 16 Moderate (4%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 42; the highest single-day reading hit 61 (Moderate).
Across 2020–2025, Good-day share shifted +4.3 points and median AQI moved -1 (improving). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Aberdeen, WA (97.3% good, AQI 22); Gardnerville Ranchos, NV (91.1% good, AQI 22); Longview, WA (90.4% good, AQI 22).
Air Quality Summary
Median AQI
22
Good
Good Days
95.5%
340 of 356 days
Max AQI
61
Moderate
Health Grade
Excellent
90th pct: 42
AQI Day Breakdown (2025)
Distribution of 356 monitored days across EPA AQI categories.
Good
340
96%
Moderate
16
4%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Bremerton-Silverdale, WA metro area's air quality is rated Excellent based on 95.5% 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 Bremerton-Silverdale, WA metro compare?
How Bremerton-Silverdale, WA compares
5-Year Air Quality Trend
Air quality is improving in the Bremerton-Silverdale, WA metro. Highest Good-day share: 2024 (97.2%, 341 of 351 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 322 | 30 | 1 | 23 | 245 |
| 2021 | 342 | 16 | 0 | 26 | 113 |
| 2022 | 306 | 50 | 0 | 28 | 143 |
| 2023 | 323 | 25 | 0 | 22 | 115 |
| 2024 | 341 | 10 | 0 | 19 | 69 |
| 2025 | 340 | 16 | 0 | 22 | 61 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Bremerton-Silverdale, WA (22).
Aberdeen, WA
Median AQI 22 · 97.3% Good-day share
Gardnerville Ranchos, NV
Median AQI 22 · 91.1% Good-day share
Longview, WA
Median AQI 22 · 90.4% Good-day share
Steamboat Springs, CO
Median AQI 22 · 93.7% Good-day share
Bend-Redmond, OR
Median AQI 23 · 89.3% Good-day share
Cañon City, CO
Median AQI 23 · 93.4% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Bremerton-Silverdale, WA's 0 (independent of median AQI).
Aberdeen, SD
0 unhealthy-or-worse days · median AQI 27
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
Albany-Schenectady-Troy, NY
0 unhealthy-or-worse days · median AQI 41
Frequently Asked Questions
How many unhealthy air days does Bremerton-Silverdale, WA have? ▼
What is the air quality in the Bremerton-Silverdale, WA metro area? ▼
Is air quality in Bremerton-Silverdale, WA getting better or worse? ▼
What does AQI 22 mean for health? ▼
How does Bremerton-Silverdale, WA compare to other metro areas? ▼
What is the 90th percentile AQI for Bremerton-Silverdale, WA? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Bremerton-Silverdale, WA, 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, Bremerton-Silverdale, WA · 2020–2025