Castle Rock
United States · 56K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Castle Rock
United States
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 0% viability
0Feb: 0% viability
0Mar: 8% viability
8Apr: 26% viability
26May: 47% viability
47Jun: 80% viability
80Jul: 86% viability
86Aug: 88% viability
88Sep: 67% viability
67Oct: 22% viability
22Nov: 0% viability
0Dec: 0% viability
0Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: Jun–AugChallenging: 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.
Castle Rock
United States
Annual Average
GoodWHO annual classification
5.2µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4.84.8 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
5.05.0 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
5.65.6 µg/m³ — Good
5.35.3 µg/m³ — Good
6.26.2 µg/m³ — Good
6.26.2 µg/m³ — Good
5.15.1 µg/m³ — Good
5.05.0 µg/m³ — Excellent
5.55.5 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
4.84.8 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
5.05.0 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
5.65.6 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
5.35.3 µg/m³ — Good
6.26.2 µg/m³ — Good
6.26.2 µg/m³ — Good
5.15.1 µg/m³ — Good
5.05.0 µg/m³ — Excellent
5.55.5 µg/m³ — Good
Best months: Jan, Mar, MayWorst months: Jun, Aug–Sep
Excellent0–5 µg/m³Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
Castle Rock
United States
Annual Summary
Sunshine
3,154hrs/yr
Clear sky
63%
Worst month
7.4hrs/day
Vit D months
9.1months
UV 8+ days
116days/yr
UV 11+ days
8days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
7.67.6 hrs — Good
9.49.4 hrs — Sunny
1010 hrs — Sunny
1111 hrs — Very Sunny
1212 hrs — Very Sunny
1212 hrs — Very Sunny
1212 hrs — Very Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
9.49.4 hrs — Sunny
8.58.5 hrs — Sunny
7.77.7 hrs — Good
Jan
Feb
Mar
Apr
May
Jun
7.67.6 hrs — Good
9.49.4 hrs — Sunny
1010 hrs — Sunny
1111 hrs — Very Sunny
1212 hrs — Very Sunny
1212 hrs — Very Sunny
Jul
Aug
Sep
Oct
Nov
Dec
1212 hrs — Very Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
9.49.4 hrs — Sunny
8.58.5 hrs — Sunny
7.77.7 hrs — Good
Best months: May–JulWorst months: Jan, Nov–Dec
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●