Port Townsend, Washington, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
August Air Quality Analysis
Port Townsend, Washington, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
26th Aug 2023
86AQILowest AQI recorded on
5th Aug 2021
10AQISame Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 29 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Port Townsend, Washington, United States
AQI
Day
Night
.
5 AM5th Aug 2025
9 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
4PM5th Aug
51AQI
Avg. Lowest Time
8AM5th Aug
24AQI
Night time
Avg. Highest Time
9PM5th Aug
39AQI
Avg. Lowest Time
11PM5th Aug
28AQI
In the last 24 hours,
Port Townsend's AQI reached its highest point of 51 at 4 PM during the Day, while the lowest point, 24, was recorded at 8 AM during the Day between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Port Townsend, Washington, United States
JulAug
07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th
Day
Night
7th Jul 2025175 AMAQI
7th Jul 2025186 AMAQI
7th Jul 2025187 AMAQI
7th Jul 2025188 AMAQI
7th Jul 2025179 AMAQI
7th Jul 20251810 AMAQI
7th Jul 20251811 AMAQI
7th Jul 20251812 PMAQI
7th Jul 2025171 PMAQI
7th Jul 2025182 PMAQI
7th Jul 2025193 PMAQI
7th Jul 2025184 PMAQI
7th Jul 2025185 PMAQI
7th Jul 2025186 PMAQI
7th Jul 2025197 PMAQI
7th Jul 2025188 PMAQI
7th Jul 2025189 PMAQI
7th Jul 20251910 PMAQI
7th Jul 20252011 PMAQI
8th Jul 20251912 AMAQI
8th Jul 2025181 AMAQI
8th Jul 2025192 AMAQI
8th Jul 2025183 AMAQI
8th Jul 2025184 AMAQI
15°C11/19°C
8th Jul 2025185 AMAQI
8th Jul 2025186 AMAQI
8th Jul 2025187 AMAQI
8th Jul 2025188 AMAQI
8th Jul 2025189 AMAQI
8th Jul 20251810 AMAQI
8th Jul 20251811 AMAQI
8th Jul 20251812 PMAQI
8th Jul 2025171 PMAQI
8th Jul 2025182 PMAQI
8th Jul 2025203 PMAQI
8th Jul 2025184 PMAQI
8th Jul 2025185 PMAQI
8th Jul 2025186 PMAQI
8th Jul 2025197 PMAQI
8th Jul 2025198 PMAQI
8th Jul 2025189 PMAQI
8th Jul 20251910 PMAQI
8th Jul 20251811 PMAQI
9th Jul 20251812 AMAQI
9th Jul 2025171 AMAQI
9th Jul 2025152 AMAQI
9th Jul 2025163 AMAQI
9th Jul 2025144 AMAQI
16°C12/19°C
9th Jul 2025145 AMAQI
9th Jul 2025146 AMAQI
9th Jul 2025147 AMAQI
9th Jul 2025148 AMAQI
9th Jul 2025149 AMAQI
9th Jul 20251410 AMAQI
9th Jul 20251411 AMAQI
9th Jul 20251512 PMAQI
9th Jul 2025171 PMAQI
9th Jul 2025162 PMAQI
9th Jul 2025153 PMAQI
9th Jul 2025164 PMAQI
9th Jul 2025165 PMAQI
9th Jul 2025166 PMAQI
9th Jul 2025167 PMAQI
9th Jul 2025168 PMAQI
9th Jul 2025189 PMAQI
9th Jul 20251710 PMAQI
9th Jul 20251711 PMAQI
10th Jul 20251712 AMAQI
10th Jul 2025161 AMAQI
10th Jul 2025162 AMAQI
10th Jul 2025163 AMAQI
10th Jul 2025164 AMAQI
14°C12/15°C
10th Jul 2025175 AMAQI
10th Jul 2025156 AMAQI
10th Jul 2025147 AMAQI
10th Jul 2025158 AMAQI
10th Jul 2025169 AMAQI
10th Jul 20251610 AMAQI
10th Jul 20251511 AMAQI
10th Jul 20251712 PMAQI
10th Jul 2025171 PMAQI
10th Jul 2025162 PMAQI
10th Jul 2025163 PMAQI
10th Jul 2025174 PMAQI
10th Jul 2025185 PMAQI
10th Jul 2025176 PMAQI
10th Jul 2025187 PMAQI
10th Jul 2025188 PMAQI
10th Jul 2025189 PMAQI
10th Jul 20251810 PMAQI
10th Jul 20251811 PMAQI
11th Jul 20251812 AMAQI
11th Jul 2025161 AMAQI
11th Jul 2025162 AMAQI
11th Jul 2025163 AMAQI
11th Jul 2025154 AMAQI
14°C12/18°C
11th Jul 2025165 AMAQI
11th Jul 2025166 AMAQI
11th Jul 2025167 AMAQI
11th Jul 2025168 AMAQI
11th Jul 2025169 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20251711 AMAQI
11th Jul 20252012 PMAQI
11th Jul 2025171 PMAQI
11th Jul 2025182 PMAQI
11th Jul 2025183 PMAQI
11th Jul 2025184 PMAQI
11th Jul 2025185 PMAQI
11th Jul 2025186 PMAQI
11th Jul 2025187 PMAQI
11th Jul 2025188 PMAQI
11th Jul 2025199 PMAQI
11th Jul 20251910 PMAQI
11th Jul 20251811 PMAQI
12th Jul 20251812 AMAQI
12th Jul 2025151 AMAQI
12th Jul 2025172 AMAQI
12th Jul 2025163 AMAQI
12th Jul 2025174 AMAQI
15°C11/20°C
12th Jul 2025155 AMAQI
12th Jul 2025156 AMAQI
12th Jul 2025177 AMAQI
12th Jul 2025178 AMAQI
12th Jul 2025179 AMAQI
12th Jul 20251710 AMAQI
12th Jul 20251611 AMAQI
12th Jul 20251612 PMAQI
12th Jul 2025161 PMAQI
12th Jul 2025172 PMAQI
12th Jul 2025183 PMAQI
12th Jul 2025184 PMAQI
12th Jul 2025195 PMAQI
12th Jul 2025186 PMAQI
12th Jul 2025187 PMAQI
12th Jul 2025188 PMAQI
12th Jul 2025189 PMAQI
12th Jul 20251910 PMAQI
12th Jul 20251911 PMAQI
13th Jul 20252012 AMAQI
13th Jul 2025181 AMAQI
13th Jul 2025202 AMAQI
13th Jul 2025203 AMAQI
13th Jul 2025194 AMAQI
15°C13/17°C
13th Jul 2025195 AMAQI
13th Jul 2025196 AMAQI
13th Jul 2025227 AMAQI
13th Jul 2025208 AMAQI
13th Jul 2025209 AMAQI
13th Jul 20252010 AMAQI
13th Jul 20252011 AMAQI
13th Jul 20252212 PMAQI
13th Jul 2025211 PMAQI
13th Jul 2025212 PMAQI
13th Jul 2025213 PMAQI
13th Jul 2025214 PMAQI
13th Jul 2025215 PMAQI
13th Jul 2025206 PMAQI
13th Jul 2025207 PMAQI
13th Jul 2025218 PMAQI
13th Jul 2025199 PMAQI
13th Jul 20251910 PMAQI
13th Jul 20251911 PMAQI
14th Jul 20251812 AMAQI
14th Jul 2025171 AMAQI
14th Jul 2025162 AMAQI
14th Jul 2025163 AMAQI
14th Jul 2025164 AMAQI
17°C13/22°C
14th Jul 2025175 AMAQI
14th Jul 2025176 AMAQI
14th Jul 2025177 AMAQI
14th Jul 2025178 AMAQI
14th Jul 2025189 AMAQI
14th Jul 20251810 AMAQI
14th Jul 20251811 AMAQI
14th Jul 20251812 PMAQI
14th Jul 2025181 PMAQI
14th Jul 2025202 PMAQI
14th Jul 2025193 PMAQI
14th Jul 2025194 PMAQI
14th Jul 2025195 PMAQI
14th Jul 2025196 PMAQI
14th Jul 2025187 PMAQI
14th Jul 2025198 PMAQI
14th Jul 2025199 PMAQI
14th Jul 20251910 PMAQI
14th Jul 20251811 PMAQI
15th Jul 20252012 AMAQI
15th Jul 2025201 AMAQI
15th Jul 2025202 AMAQI
15th Jul 2025203 AMAQI
15th Jul 2025204 AMAQI
14°C13/14°C
15th Jul 2025205 AMAQI
15th Jul 2025206 AMAQI
15th Jul 2025197 AMAQI
15th Jul 2025198 AMAQI
15th Jul 2025209 AMAQI
15th Jul 20251910 AMAQI
15th Jul 20251911 AMAQI
15th Jul 20252012 PMAQI
15th Jul 2025211 PMAQI
15th Jul 2025202 PMAQI
15th Jul 2025203 PMAQI
15th Jul 2025194 PMAQI
15th Jul 2025205 PMAQI
15th Jul 2025206 PMAQI
15th Jul 2025217 PMAQI
15th Jul 2025218 PMAQI
15th Jul 2025219 PMAQI
15th Jul 20252110 PMAQI
15th Jul 20252111 PMAQI
16th Jul 20252212 AMAQI
16th Jul 2025211 AMAQI
16th Jul 2025212 AMAQI
16th Jul 2025213 AMAQI
16th Jul 2025224 AMAQI
17°C12/21°C
16th Jul 2025235 AMAQI
16th Jul 2025236 AMAQI
16th Jul 2025227 AMAQI
16th Jul 2025238 AMAQI
16th Jul 2025249 AMAQI
16th Jul 20252410 AMAQI
16th Jul 20252511 AMAQI
16th Jul 20252512 PMAQI
16th Jul 2025251 PMAQI
16th Jul 2025262 PMAQI
16th Jul 2025253 PMAQI
16th Jul 2025254 PMAQI
16th Jul 2025245 PMAQI
16th Jul 2025256 PMAQI
16th Jul 2025247 PMAQI
16th Jul 2025258 PMAQI
16th Jul 2025259 PMAQI
16th Jul 20252510 PMAQI
16th Jul 20252611 PMAQI
17th Jul 20252712 AMAQI
17th Jul 2025281 AMAQI
17th Jul 2025302 AMAQI
17th Jul 2025303 AMAQI
17th Jul 2025314 AMAQI
18°C15/20°C
17th Jul 2025305 AMAQI
17th Jul 2025306 AMAQI
17th Jul 2025307 AMAQI
17th Jul 2025308 AMAQI
17th Jul 2025309 AMAQI
17th Jul 20253010 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20253112 PMAQI
17th Jul 2025311 PMAQI
17th Jul 2025322 PMAQI
17th Jul 2025333 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025315 PMAQI
17th Jul 2025306 PMAQI
17th Jul 2025297 PMAQI
17th Jul 2025308 PMAQI
17th Jul 2025299 PMAQI
17th Jul 20252910 PMAQI
17th Jul 20252911 PMAQI
18th Jul 20253012 AMAQI
18th Jul 2025291 AMAQI
18th Jul 2025292 AMAQI
18th Jul 2025283 AMAQI
18th Jul 2025274 AMAQI
17°C14/21°C
18th Jul 2025275 AMAQI
18th Jul 2025276 AMAQI
18th Jul 2025277 AMAQI
18th Jul 2025278 AMAQI
18th Jul 2025269 AMAQI
18th Jul 20252410 AMAQI
18th Jul 20252411 AMAQI
18th Jul 20252412 PMAQI
18th Jul 2025231 PMAQI
18th Jul 2025242 PMAQI
18th Jul 2025253 PMAQI
18th Jul 2025254 PMAQI
18th Jul 2025265 PMAQI
18th Jul 2025256 PMAQI
18th Jul 2025277 PMAQI
18th Jul 2025268 PMAQI
18th Jul 2025249 PMAQI
18th Jul 20252610 PMAQI
18th Jul 20252611 PMAQI
19th Jul 20252612 AMAQI
19th Jul 2025231 AMAQI
19th Jul 2025222 AMAQI
19th Jul 2025223 AMAQI
19th Jul 2025224 AMAQI
15°C13/15°C
19th Jul 2025225 AMAQI
19th Jul 2025226 AMAQI
19th Jul 2025227 AMAQI
19th Jul 2025228 AMAQI
19th Jul 2025229 AMAQI
19th Jul 20252110 AMAQI
19th Jul 20252111 AMAQI
19th Jul 20252112 PMAQI
19th Jul 2025211 PMAQI
19th Jul 2025212 PMAQI
19th Jul 2025223 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025225 PMAQI
19th Jul 2025226 PMAQI
19th Jul 2025227 PMAQI
19th Jul 2025228 PMAQI
19th Jul 2025229 PMAQI
19th Jul 20252210 PMAQI
19th Jul 20252211 PMAQI
20th Jul 20252112 AMAQI
20th Jul 2025201 AMAQI
20th Jul 2025192 AMAQI
20th Jul 2025183 AMAQI
20th Jul 2025184 AMAQI
13°C12/15°C
20th Jul 2025185 AMAQI
20th Jul 2025186 AMAQI
20th Jul 2025197 AMAQI
20th Jul 2025188 AMAQI
20th Jul 2025189 AMAQI
20th Jul 20251910 AMAQI
20th Jul 20251911 AMAQI
20th Jul 20251912 PMAQI
20th Jul 2025201 PMAQI
20th Jul 2025212 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025214 PMAQI
20th Jul 2025205 PMAQI
20th Jul 2025216 PMAQI
20th Jul 2025207 PMAQI
20th Jul 2025198 PMAQI
20th Jul 2025219 PMAQI
20th Jul 20252110 PMAQI
20th Jul 20252111 PMAQI
21st Jul 20252212 AMAQI
21st Jul 2025211 AMAQI
21st Jul 2025212 AMAQI
21st Jul 2025213 AMAQI
21st Jul 2025204 AMAQI
13°C11/17°C
21st Jul 2025205 AMAQI
21st Jul 2025206 AMAQI
21st Jul 2025207 AMAQI
21st Jul 2025218 AMAQI
21st Jul 2025219 AMAQI
21st Jul 20252110 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252212 PMAQI
21st Jul 2025221 PMAQI
21st Jul 2025222 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025244 PMAQI
21st Jul 2025255 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025227 PMAQI
21st Jul 2025218 PMAQI
21st Jul 2025229 PMAQI
21st Jul 20252110 PMAQI
21st Jul 20252211 PMAQI
22nd Jul 20252212 AMAQI
22nd Jul 2025211 AMAQI
22nd Jul 2025212 AMAQI
22nd Jul 2025203 AMAQI
22nd Jul 2025204 AMAQI
14°C12/18°C
22nd Jul 2025205 AMAQI
22nd Jul 2025206 AMAQI
22nd Jul 2025217 AMAQI
22nd Jul 2025228 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252110 AMAQI
22nd Jul 20252111 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025211 PMAQI
22nd Jul 2025212 PMAQI
22nd Jul 2025223 PMAQI
22nd Jul 2025224 PMAQI
22nd Jul 2025225 PMAQI
22nd Jul 2025236 PMAQI
22nd Jul 2025227 PMAQI
22nd Jul 2025218 PMAQI
22nd Jul 2025219 PMAQI
22nd Jul 20252010 PMAQI
22nd Jul 20252011 PMAQI
23rd Jul 20252012 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025172 AMAQI
23rd Jul 2025173 AMAQI
23rd Jul 2025174 AMAQI
15°C13/16°C
23rd Jul 2025175 AMAQI
23rd Jul 2025196 AMAQI
23rd Jul 2025177 AMAQI
23rd Jul 2025188 AMAQI
23rd Jul 2025189 AMAQI
23rd Jul 20252110 AMAQI
23rd Jul 20251811 AMAQI
23rd Jul 20252412 PMAQI
23rd Jul 2025201 PMAQI
23rd Jul 2025202 PMAQI
23rd Jul 2025203 PMAQI
23rd Jul 2025214 PMAQI
23rd Jul 2025225 PMAQI
23rd Jul 2025226 PMAQI
23rd Jul 2025207 PMAQI
23rd Jul 2025218 PMAQI
23rd Jul 2025209 PMAQI
23rd Jul 20252010 PMAQI
23rd Jul 20252011 PMAQI
24th Jul 20252012 AMAQI
24th Jul 2025171 AMAQI
24th Jul 2025192 AMAQI
24th Jul 2025183 AMAQI
24th Jul 2025174 AMAQI
15°C13/16°C
24th Jul 2025165 AMAQI
24th Jul 2025176 AMAQI
24th Jul 2025177 AMAQI
24th Jul 2025178 AMAQI
24th Jul 2025169 AMAQI
24th Jul 20251810 AMAQI
24th Jul 20251811 AMAQI
24th Jul 20251912 PMAQI
24th Jul 2025191 PMAQI
24th Jul 2025182 PMAQI
24th Jul 2025203 PMAQI
24th Jul 2025204 PMAQI
24th Jul 2025215 PMAQI
24th Jul 2025206 PMAQI
24th Jul 2025207 PMAQI
24th Jul 2025208 PMAQI
24th Jul 2025209 PMAQI
24th Jul 20252010 PMAQI
24th Jul 20251911 PMAQI
25th Jul 20251812 AMAQI
25th Jul 2025171 AMAQI
25th Jul 2025172 AMAQI
25th Jul 2025163 AMAQI
25th Jul 2025164 AMAQI
15°C12/17°C
25th Jul 2025155 AMAQI
25th Jul 2025156 AMAQI
25th Jul 2025167 AMAQI
25th Jul 2025168 AMAQI
25th Jul 2025159 AMAQI
25th Jul 20251410 AMAQI
25th Jul 20251511 AMAQI
25th Jul 20251612 PMAQI
25th Jul 2025171 PMAQI
25th Jul 2025162 PMAQI
25th Jul 2025163 PMAQI
25th Jul 2025174 PMAQI
25th Jul 2025175 PMAQI
25th Jul 2025176 PMAQI
25th Jul 2025187 PMAQI
25th Jul 2025188 PMAQI
25th Jul 2025199 PMAQI
25th Jul 20251810 PMAQI
25th Jul 20251811 PMAQI
26th Jul 20251812 AMAQI
26th Jul 2025181 AMAQI
26th Jul 2025182 AMAQI
26th Jul 2025193 AMAQI
26th Jul 2025184 AMAQI
13°C11/14°C
26th Jul 2025185 AMAQI
26th Jul 2025196 AMAQI
26th Jul 2025187 AMAQI
26th Jul 2025218 AMAQI
26th Jul 2025209 AMAQI
26th Jul 20251910 AMAQI
26th Jul 20251911 AMAQI
26th Jul 20251812 PMAQI
26th Jul 2025181 PMAQI
26th Jul 2025182 PMAQI
26th Jul 2025193 PMAQI
26th Jul 2025194 PMAQI
26th Jul 2025195 PMAQI
26th Jul 2025196 PMAQI
26th Jul 2025207 PMAQI
26th Jul 2025208 PMAQI
26th Jul 2025209 PMAQI
26th Jul 20252010 PMAQI
26th Jul 20252111 PMAQI
27th Jul 20252012 AMAQI
27th Jul 2025191 AMAQI
27th Jul 2025192 AMAQI
27th Jul 2025203 AMAQI
27th Jul 2025414 AMAQI
13°C12/15°C
27th Jul 2025195 AMAQI
27th Jul 2025206 AMAQI
27th Jul 2025217 AMAQI
27th Jul 2025218 AMAQI
27th Jul 2025209 AMAQI
27th Jul 20252110 AMAQI
27th Jul 20252111 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025221 PMAQI
27th Jul 2025222 PMAQI
27th Jul 2025223 PMAQI
27th Jul 2025224 PMAQI
27th Jul 2025225 PMAQI
27th Jul 2025226 PMAQI
27th Jul 2025227 PMAQI
27th Jul 2025228 PMAQI
27th Jul 2025229 PMAQI
27th Jul 20252110 PMAQI
27th Jul 20252211 PMAQI
28th Jul 20252212 AMAQI
28th Jul 2025201 AMAQI
28th Jul 2025192 AMAQI
28th Jul 2025193 AMAQI
28th Jul 2025194 AMAQI
13°C11/16°C
28th Jul 2025195 AMAQI
28th Jul 2025186 AMAQI
28th Jul 2025207 AMAQI
28th Jul 2025208 AMAQI
28th Jul 2025209 AMAQI
28th Jul 20252110 AMAQI
28th Jul 20252111 AMAQI
28th Jul 20252112 PMAQI
28th Jul 2025211 PMAQI
28th Jul 2025202 PMAQI
28th Jul 2025213 PMAQI
28th Jul 2025214 PMAQI
28th Jul 2025225 PMAQI
28th Jul 2025216 PMAQI
28th Jul 2025217 PMAQI
28th Jul 2025208 PMAQI
28th Jul 2025219 PMAQI
28th Jul 20252110 PMAQI
28th Jul 20252211 PMAQI
29th Jul 20252112 AMAQI
29th Jul 2025201 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025183 AMAQI
29th Jul 2025184 AMAQI
14°C10/18°C
29th Jul 2025185 AMAQI
29th Jul 2025186 AMAQI
29th Jul 2025197 AMAQI
29th Jul 2025208 AMAQI
29th Jul 2025209 AMAQI
29th Jul 20252110 AMAQI
29th Jul 20252111 AMAQI
29th Jul 20252012 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025202 PMAQI
29th Jul 2025213 PMAQI
29th Jul 2025214 PMAQI
29th Jul 2025215 PMAQI
29th Jul 2025216 PMAQI
29th Jul 2025217 PMAQI
29th Jul 2025218 PMAQI
29th Jul 2025229 PMAQI
29th Jul 20252010 PMAQI
29th Jul 20252011 PMAQI
30th Jul 20252112 AMAQI
30th Jul 2025181 AMAQI
30th Jul 2025172 AMAQI
30th Jul 2025173 AMAQI
30th Jul 2025174 AMAQI
14°C11/17°C
30th Jul 2025185 AMAQI
30th Jul 2025196 AMAQI
30th Jul 2025197 AMAQI
30th Jul 2025188 AMAQI
30th Jul 2025189 AMAQI
30th Jul 20251910 AMAQI
30th Jul 20252011 AMAQI
30th Jul 20251912 PMAQI
30th Jul 2025191 PMAQI
30th Jul 2025182 PMAQI
30th Jul 2025183 PMAQI
30th Jul 2025184 PMAQI
30th Jul 2025185 PMAQI
30th Jul 2025186 PMAQI
30th Jul 2025187 PMAQI
30th Jul 2025188 PMAQI
30th Jul 2025209 PMAQI
30th Jul 20252010 PMAQI
30th Jul 20252011 PMAQI
31st Jul 20252112 AMAQI
31st Jul 2025171 AMAQI
31st Jul 2025172 AMAQI
31st Jul 2025153 AMAQI
31st Jul 2025164 AMAQI
15°C14/18°C
31st Jul 2025145 AMAQI
31st Jul 2025166 AMAQI
31st Jul 2025187 AMAQI
31st Jul 2025188 AMAQI
31st Jul 2025169 AMAQI
31st Jul 20251710 AMAQI
31st Jul 20251611 AMAQI
31st Jul 20251812 PMAQI
31st Jul 2025171 PMAQI
31st Jul 2025172 PMAQI
31st Jul 2025183 PMAQI
31st Jul 2025194 PMAQI
31st Jul 2025185 PMAQI
31st Jul 2025196 PMAQI
31st Jul 2025207 PMAQI
31st Jul 2025208 PMAQI
31st Jul 2025209 PMAQI
31st Jul 20251810 PMAQI
31st Jul 20251911 PMAQI
1st Aug 20251912 AMAQI
1st Aug 2025181 AMAQI
1st Aug 2025182 AMAQI
1st Aug 2025173 AMAQI
1st Aug 2025184 AMAQI
15°C13/17°C
1st Aug 2025165 AMAQI
1st Aug 2025166 AMAQI
1st Aug 2025157 AMAQI
1st Aug 2025168 AMAQI
1st Aug 2025179 AMAQI
1st Aug 20251810 AMAQI
1st Aug 20251811 AMAQI
1st Aug 20251712 PMAQI
1st Aug 2025191 PMAQI
1st Aug 2025192 PMAQI
1st Aug 2025193 PMAQI
1st Aug 2025204 PMAQI
1st Aug 2025205 PMAQI
1st Aug 2025216 PMAQI
1st Aug 2025187 PMAQI
1st Aug 2025198 PMAQI
1st Aug 2025239 PMAQI
1st Aug 20252210 PMAQI
1st Aug 20252111 PMAQI
2nd Aug 20252212 AMAQI
2nd Aug 2025191 AMAQI
2nd Aug 2025182 AMAQI
2nd Aug 2025193 AMAQI
2nd Aug 2025184 AMAQI
15°C13/19°C
2nd Aug 2025185 AMAQI
2nd Aug 2025176 AMAQI
2nd Aug 2025157 AMAQI
2nd Aug 2025158 AMAQI
2nd Aug 2025159 AMAQI
2nd Aug 20251510 AMAQI
2nd Aug 20251411 AMAQI
2nd Aug 20251412 PMAQI
2nd Aug 2025151 PMAQI
2nd Aug 2025142 PMAQI
2nd Aug 2025163 PMAQI
2nd Aug 2025164 PMAQI
2nd Aug 2025185 PMAQI
2nd Aug 2025196 PMAQI
2nd Aug 2025197 PMAQI
2nd Aug 2025198 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20252310 PMAQI
2nd Aug 20252111 PMAQI
3rd Aug 20252112 AMAQI
3rd Aug 2025211 AMAQI
3rd Aug 2025232 AMAQI
3rd Aug 2025223 AMAQI
3rd Aug 2025224 AMAQI
14°C13/16°C
3rd Aug 2025215 AMAQI
3rd Aug 2025216 AMAQI
3rd Aug 2025217 AMAQI
3rd Aug 2025218 AMAQI
3rd Aug 2025219 AMAQI
3rd Aug 20252310 AMAQI
3rd Aug 20252211 AMAQI
3rd Aug 20252212 PMAQI
3rd Aug 2025241 PMAQI
3rd Aug 2025242 PMAQI
3rd Aug 2025253 PMAQI
3rd Aug 2025254 PMAQI
3rd Aug 2025245 PMAQI
3rd Aug 2025246 PMAQI
3rd Aug 2025227 PMAQI
3rd Aug 2025248 PMAQI
3rd Aug 2025289 PMAQI
3rd Aug 20252710 PMAQI
3rd Aug 20252911 PMAQI
4th Aug 20253112 AMAQI
4th Aug 2025301 AMAQI
4th Aug 2025302 AMAQI
4th Aug 2025283 AMAQI
4th Aug 2025274 AMAQI
14°C12/15°C
4th Aug 2025285 AMAQI
4th Aug 2025316 AMAQI
4th Aug 2025327 AMAQI
4th Aug 2025308 AMAQI
4th Aug 2025319 AMAQI
4th Aug 20253110 AMAQI
4th Aug 20253011 AMAQI
4th Aug 20253112 PMAQI
4th Aug 2025311 PMAQI
4th Aug 2025322 PMAQI
4th Aug 2025323 PMAQI
4th Aug 2025334 PMAQI
4th Aug 2025345 PMAQI
4th Aug 2025326 PMAQI
4th Aug 2025307 PMAQI
4th Aug 2025328 PMAQI
4th Aug 2025319 PMAQI
4th Aug 20253310 PMAQI
4th Aug 20253011 PMAQI
5th Aug 20252712 AMAQI
5th Aug 2025271 AMAQI
5th Aug 2025282 AMAQI
5th Aug 2025273 AMAQI
5th Aug 2025264 AMAQI
15°C11/17°C
5th Aug 2025275 AMAQI
5th Aug 2025276 AMAQI
5th Aug 2025257 AMAQI
5th Aug 2025248 AMAQI
5th Aug 2025269 AMAQI
5th Aug 20252710 AMAQI
5th Aug 20252711 AMAQI
5th Aug 20252812 PMAQI
5th Aug 2025311 PMAQI
5th Aug 2025412 PMAQI
5th Aug 2025503 PMAQI
5th Aug 2025514 PMAQI
5th Aug 2025515 PMAQI
5th Aug 2025506 PMAQI
5th Aug 2025287 PMAQI
5th Aug 2025358 PMAQI
5th Aug 2025399 PMAQI
5th Aug 20253610 PMAQI
5th Aug 20252811 PMAQI
6th Aug 20253112 AMAQI
6th Aug 2025341 AMAQI
6th Aug 2025342 AMAQI
6th Aug 2025343 AMAQI
6th Aug 2025344 AMAQI
15°C13/19°C
6th Aug 2025335 AMAQI
5 AM6th Aug 2025306 AMAQI
6th Aug 2025267 AMAQI
6th Aug 2025248 AMAQI
6th Aug 2025229 AMAQI
6th Aug 20252210 AMAQI
6th Aug 20252211 AMAQI
6th Aug 20251912 PMAQI
1 PM
9 PM
1 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 9 PM
21AQI
17 hours / Day
510 hours / Month
Avg. Lowest Time
5 AM - 9 PM
21AQI
17 hours / Day
510 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 9 PM (Avg. 21), while the lowest AQI was between 5 AM to 9 PM (Avg. 21).
Night time
Avg. Highest Time
12 AM
22AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
1 AM - 11 PM
21AQI
6 hours / Day
180 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 12 AM (Avg. 22), while the lowest AQI was between 1 AM to 11 PM (Avg. 21).
2025 Days Vs Air Quality
Port Townsend, Washington, United States
2025
100%
216
0.4%
1
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Good
216 DaysModerate
1 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 218 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Port Townsend, Washington, United States
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
23AQI
23AQI
2nd January 2025
27AQI
27AQI
3rd January 2025
22AQI
22AQI
4th January 2025
21AQI
21AQI
5th January 2025
20AQI
20AQI
6th January 2025
20AQI
20AQI
7th January 2025
26AQI
26AQI
8th January 2025
26AQI
26AQI
9th January 2025
27AQI
27AQI
10th January 2025
23AQI
23AQI
11th January 2025
21AQI
21AQI
12th January 2025
30AQI
30AQI
13th January 2025
32AQI
32AQI
14th January 2025
40AQI
40AQI
15th January 2025
38AQI
38AQI
16th January 2025
29AQI
29AQI
17th January 2025
28AQI
28AQI
18th January 2025
35AQI
35AQI
19th January 2025
37AQI
37AQI
20th January 2025
35AQI
35AQI
21st January 2025
46AQI
46AQI
22nd January 2025
42AQI
42AQI
23rd January 2025
43AQI
43AQI
24th January 2025
30AQI
30AQI
25th January 2025
30AQI
30AQI
26th January 2025
39AQI
39AQI
27th January 2025
38AQI
38AQI
28th January 2025
44AQI
44AQI
29th January 2025
51AQI
51AQI
30th January 2025
37AQI
37AQI
31st January 2025
23AQI
23AQI
1st February 2025
19AQI
19AQI
2nd February 2025
21AQI
21AQI
3rd February 2025
21AQI
21AQI
4th February 2025
22AQI
22AQI
5th February 2025
22AQI
22AQI
6th February 2025
23AQI
23AQI
7th February 2025
24AQI
24AQI
8th February 2025
29AQI
29AQI
9th February 2025
30AQI
30AQI
10th February 2025
23AQI
23AQI
11th February 2025
26AQI
26AQI
12th February 2025
33AQI
33AQI
13th February 2025
24AQI
24AQI
14th February 2025
23AQI
23AQI
15th February 2025
20AQI
20AQI
16th February 2025
21AQI
21AQI
17th February 2025
21AQI
21AQI
18th February 2025
26AQI
26AQI
19th February 2025
19AQI
19AQI
20th February 2025
20AQI
20AQI
21st February 2025
19AQI
19AQI
22nd February 2025
19AQI
19AQI
23rd February 2025
17AQI
17AQI
24th February 2025
19AQI
19AQI
25th February 2025
18AQI
18AQI
26th February 2025
22AQI
22AQI
27th February 2025
22AQI
22AQI
28th February 2025
27AQI
27AQI
1st March 2025
34AQI
34AQI
2nd March 2025
36AQI
36AQI
3rd March 2025
21AQI
21AQI
4th March 2025
20AQI
20AQI
5th March 2025
22AQI
22AQI
6th March 2025
19AQI
19AQI
7th March 2025
24AQI
24AQI
8th March 2025
19AQI
19AQI
9th March 2025
19AQI
19AQI
10th March 2025
18AQI
18AQI
11th March 2025
18AQI
18AQI
12th March 2025
20AQI
20AQI
13th March 2025
16AQI
16AQI
14th March 2025
18AQI
18AQI
15th March 2025
16AQI
16AQI
16th March 2025
16AQI
16AQI
17th March 2025
17AQI
17AQI
18th March 2025
16AQI
16AQI
19th March 2025
17AQI
17AQI
20th March 2025
15AQI
15AQI
21st March 2025
16AQI
16AQI
22nd March 2025
17AQI
17AQI
23rd March 2025
17AQI
17AQI
24th March 2025
18AQI
18AQI
25th March 2025
22AQI
22AQI
26th March 2025
21AQI
21AQI
27th March 2025
16AQI
16AQI
28th March 2025
16AQI
16AQI
29th March 2025
16AQI
16AQI
30th March 2025
18AQI
18AQI
31st March 2025
17AQI
17AQI
1st April 2025
18AQI
18AQI
2nd April 2025
18AQI
18AQI
3rd April 2025
17AQI
17AQI
4th April 2025
21AQI
21AQI
5th April 2025
24AQI
24AQI
6th April 2025
22AQI
22AQI
7th April 2025
16AQI
16AQI
8th April 2025
14AQI
14AQI
9th April 2025
14AQI
14AQI
10th April 2025
17AQI
17AQI
11th April 2025
18AQI
18AQI
12th April 2025
16AQI
16AQI
13th April 2025
18AQI
18AQI
14th April 2025
18AQI
18AQI
15th April 2025
18AQI
18AQI
16th April 2025
21AQI
21AQI
17th April 2025
18AQI
18AQI
18th April 2025
22AQI
22AQI
19th April 2025
21AQI
21AQI
20th April 2025
18AQI
18AQI
21st April 2025
16AQI
16AQI
22nd April 2025
15AQI
15AQI
23rd April 2025
17AQI
17AQI
24th April 2025
21AQI
21AQI
25th April 2025
25AQI
25AQI
26th April 2025
27AQI
27AQI
27th April 2025
24AQI
24AQI
28th April 2025
18AQI
18AQI
29th April 2025
17AQI
17AQI
30th April 2025
15AQI
15AQI
1st May 2025
19AQI
19AQI
2nd May 2025
21AQI
21AQI
3rd May 2025
15AQI
15AQI
4th May 2025
14AQI
14AQI
5th May 2025
15AQI
15AQI
6th May 2025
17AQI
17AQI
7th May 2025
17AQI
17AQI
8th May 2025
16AQI
16AQI
9th May 2025
16AQI
16AQI
10th May 2025
16AQI
16AQI
11th May 2025
15AQI
15AQI
12th May 2025
15AQI
15AQI
13th May 2025
18AQI
18AQI
14th May 2025
17AQI
17AQI
15th May 2025
19AQI
19AQI
16th May 2025
18AQI
18AQI
17th May 2025
16AQI
16AQI
18th May 2025
15AQI
15AQI
19th May 2025
15AQI
15AQI
20th May 2025
13AQI
13AQI
21st May 2025
14AQI
14AQI
22nd May 2025
14AQI
14AQI
23rd May 2025
15AQI
15AQI
24th May 2025
15AQI
15AQI
25th May 2025
15AQI
15AQI
26th May 2025
15AQI
15AQI
27th May 2025
15AQI
15AQI
28th May 2025
16AQI
16AQI
29th May 2025
15AQI
15AQI
30th May 2025
17AQI
17AQI
31st May 2025
17AQI
17AQI
1st June 2025
19AQI
19AQI
2nd June 2025
18AQI
18AQI
3rd June 2025
19AQI
19AQI
4th June 2025
16AQI
16AQI
5th June 2025
17AQI
17AQI
6th June 2025
20AQI
20AQI
7th June 2025
19AQI
19AQI
8th June 2025
19AQI
19AQI
9th June 2025
24AQI
24AQI
10th June 2025
28AQI
28AQI
11th June 2025
31AQI
31AQI
12th June 2025
27AQI
27AQI
13th June 2025
20AQI
20AQI
14th June 2025
19AQI
19AQI
15th June 2025
19AQI
19AQI
16th June 2025
16AQI
16AQI
17th June 2025
17AQI
17AQI
18th June 2025
15AQI
15AQI
19th June 2025
16AQI
16AQI
20th June 2025
16AQI
16AQI
21st June 2025
17AQI
17AQI
22nd June 2025
19AQI
19AQI
23rd June 2025
21AQI
21AQI
24th June 2025
22AQI
22AQI
25th June 2025
22AQI
22AQI
26th June 2025
15AQI
15AQI
27th June 2025
14AQI
14AQI
28th June 2025
15AQI
15AQI
29th June 2025
17AQI
17AQI
30th June 2025
18AQI
18AQI
1st July 2025
17AQI
17AQI
2nd July 2025
16AQI
16AQI
3rd July 2025
16AQI
16AQI
4th July 2025
17AQI
17AQI
5th July 2025
18AQI
18AQI
6th July 2025
17AQI
17AQI
7th July 2025
18AQI
18AQI
8th July 2025
18AQI
18AQI
9th July 2025
16AQI
16AQI
10th July 2025
17AQI
17AQI
11th July 2025
17AQI
17AQI
12th July 2025
17AQI
17AQI
13th July 2025
20AQI
20AQI
14th July 2025
18AQI
18AQI
15th July 2025
20AQI
20AQI
16th July 2025
24AQI
24AQI
17th July 2025
30AQI
30AQI
18th July 2025
26AQI
26AQI
19th July 2025
22AQI
22AQI
20th July 2025
20AQI
20AQI
21st July 2025
21AQI
21AQI
22nd July 2025
21AQI
21AQI
23rd July 2025
19AQI
19AQI
24th July 2025
19AQI
19AQI
25th July 2025
17AQI
17AQI
26th July 2025
19AQI
19AQI
27th July 2025
22AQI
22AQI
28th July 2025
20AQI
20AQI
29th July 2025
20AQI
20AQI
30th July 2025
19AQI
19AQI
31st July 2025
18AQI
18AQI
1st August 2025
19AQI
19AQI
2nd August 2025
18AQI
18AQI
3rd August 2025
23AQI
23AQI
4th August 2025
31AQI
31AQI
5th August 2025
29AQI
29AQI
32AQI
23AQI
19AQI
19AQI
16AQI
19AQI
19AQI
24AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202521AQI
30
1
28
31
30
31
30
31
5
216
1
Highest AQI recorded in
January32AQI
Lowest AQI recorded in
May16AQI
202419AQI
31
26
31
30
31
29
31
31
30
31
29
1
31
361
1
Highest AQI recorded in
December27AQI
Lowest AQI recorded in
April14AQI
202320AQI
31
28
29
30
31
30
31
26
5
30
29
25
1
31
351
6
Highest AQI recorded in
August28AQI
Lowest AQI recorded in
April14AQI
202221AQI
30
21
31
30
31
30
24
1
26
3
24
6
1
18
2
30
296
11
1
Highest AQI recorded in
October39AQI
Lowest AQI recorded in
April14AQI
202117AQI
30
23
31
30
31
29
1
31
29
2
30
31
30
31
356
3
Highest AQI recorded in
August22AQI
Lowest AQI recorded in
May14AQI
202032AQI
10
19
3
2
4
2
30
30
31
120
3
2
4
2
Highest AQI recorded in
September62AQI
Lowest AQI recorded in
August19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2020(Avg.)
32AQILeast Polluted Year Recorded
2021(Avg.)
17AQIPort Townsend's annual 2025 AQI (21) shows an average percentage change of 0.9% (worsened AQI) compared to previous years: 2020 (32), 2021 (17), 2022 (21), 2023 (20), 2024 (19).
