Keystone
United States · 24K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Keystone
United States
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 36% viability
36Feb: 54% viability
54Mar: 78% viability
78Apr: 87% viability
87May: 89% viability
89Jun: 68% viability
68Jul: 65% viability
65Aug: 66% viability
66Sep: 64% viability
64Oct: 88% viability
88Nov: 67% viability
67Dec: 45% viability
45Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: Mar–May, OctChallenging: Jan
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
Keystone
United States
Annual Average
GoodWHO annual classification
7.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7.97.9 µg/m³ — Good
7.37.3 µg/m³ — Good
7.17.1 µg/m³ — Good
7.37.3 µg/m³ — Good
7.07.0 µg/m³ — Good
7.07.0 µg/m³ — Good
8.38.3 µg/m³ — Good
8.98.9 µg/m³ — Good
7.47.4 µg/m³ — Good
6.56.5 µg/m³ — Good
5.65.6 µg/m³ — Good
6.76.7 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
7.97.9 µg/m³ — Good
7.37.3 µg/m³ — Good
7.17.1 µg/m³ — Good
7.37.3 µg/m³ — Good
7.07.0 µg/m³ — Good
7.07.0 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.38.3 µg/m³ — Good
8.98.9 µg/m³ — Good
7.47.4 µg/m³ — Good
6.56.5 µg/m³ — Good
5.65.6 µg/m³ — Good
6.76.7 µg/m³ — Good
Best months: Oct–DecWorst months: Jan, Jul–Aug
Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
Keystone
United States
Annual Summary
Sunshine
2,620hrs/yr
Clear sky
48%
Worst month
5.8hrs/day
Vit D months
11.2months
UV 8+ days
148days/yr
UV 11+ days
1days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
8.08.0 hrs — Good
9.09.0 hrs — Sunny
9.59.5 hrs — Sunny
9.69.6 hrs — Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
9.79.7 hrs — Sunny
8.58.5 hrs — Sunny
9.09.0 hrs — Sunny
8.28.2 hrs — Sunny
7.97.9 hrs — Good
Jan
Feb
Mar
Apr
May
Jun
8.08.0 hrs — Good
9.09.0 hrs — Sunny
9.59.5 hrs — Sunny
9.69.6 hrs — Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
Jul
Aug
Sep
Oct
Nov
Dec
1111 hrs — Very Sunny
9.79.7 hrs — Sunny
8.58.5 hrs — Sunny
9.09.0 hrs — Sunny
8.28.2 hrs — Sunny
7.97.9 hrs — Good
Best months: May–JulWorst months: Jan, Nov–Dec
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●