US flagLewiston

United States · 33K

Lifestyle Calendar

When this city supports your activity — and when it fights you.

Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan: 0% viability
0
Feb: 0% viability
0
Mar: 9% viability
9
Apr: 29% viability
29
May: 57% viability
57
Jun: 84% viability
84
Jul: 94% viability
94
Aug: 93% viability
93
Sep: 79% viability
79
Oct: 34% viability
34
Nov: 0% viability
0
Dec: 0% viability
0
Friction Breakdown
Best months: Jun–SepChallenging: Jan–Apr, Oct–Dec
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●

Air Quality Profile

Annual and monthly PM2.5 levels against WHO guidelines.

Annual Average
GoodWHO annual classification
6.9µg/m³
Jan
Feb
Mar
Apr
May
Jun
7.07.0 µg/m³ — Good
6.36.3 µg/m³ — Good
5.25.2 µg/m³ — Good
4.44.4 µg/m³ — Excellent
4.04.0 µg/m³ — Excellent
5.45.4 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.48.4 µg/m³ — Good
8.78.7 µg/m³ — Good
1212 µg/m³ — Fair
6.86.8 µg/m³ — Good
7.77.7 µg/m³ — Good
7.17.1 µg/m³ — Good
Best months: Mar–MayWorst months: Jul–Sep
Excellent0–5 µg/m³Good5–10 µg/m³Fair10–15 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●

Sun & UV Profile

Monthly sunshine, sky clarity, and UV exposure patterns.

Annual Summary
Sunshine
2,619hrs/yr
Clear sky
52%
Worst month
1.8hrs/day
Vit D months
6.4months
UV 8+ days
29days/yr
UV 11+ days
0days/yr
Jan
Feb
Mar
Apr
May
Jun
5.05.0 hrsModerate
7.47.4 hrsGood
9.09.0 hrsSunny
1111 hrsVery Sunny
1212 hrsVery Sunny
1313 hrsVery Sunny
Jul
Aug
Sep
Oct
Nov
Dec
1414 hrsVery Sunny
1313 hrsVery Sunny
1010 hrsSunny
8.58.5 hrsSunny
6.26.2 hrsGood
4.04.0 hrsLow
Best months: Jun–AugWorst months: Jan, Nov–Dec
LowModerateGoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●