Greater Upper Marlboro
United States · 19K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Greater Upper Marlboro
United States
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 1% viability
1Feb: 1% viability
1Mar: 22% viability
22Apr: 48% viability
48May: 71% viability
71Jun: 86% viability
86Jul: 72% viability
72Aug: 77% viability
77Sep: 85% viability
85Oct: 61% viability
61Nov: 14% viability
14Dec: 1% viability
1Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: May–SepChallenging: Jan–Mar, Nov–Dec
ComfortableModerateUncomfortable
Based on 2014–2024 hourly climate data · Updated Mar 2025Confidence: ●●●
Air Quality Profile
Annual and monthly PM2.5 levels against WHO guidelines.
Greater Upper Marlboro
United States
Annual Average
GoodWHO annual classification
6.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7.77.7 µg/m³ — Good
7.37.3 µg/m³ — Good
5.85.8 µg/m³ — Good
5.25.2 µg/m³ — Good
6.16.1 µg/m³ — Good
7.57.5 µg/m³ — Good
9.59.5 µg/m³ — Good
6.36.3 µg/m³ — Good
6.16.1 µg/m³ — Good
5.55.5 µg/m³ — Good
5.85.8 µg/m³ — Good
5.75.7 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
7.77.7 µg/m³ — Good
7.37.3 µg/m³ — Good
5.85.8 µg/m³ — Good
5.25.2 µg/m³ — Good
6.16.1 µg/m³ — Good
7.57.5 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
9.59.5 µg/m³ — Good
6.36.3 µg/m³ — Good
6.16.1 µg/m³ — Good
5.55.5 µg/m³ — Good
5.85.8 µg/m³ — Good
5.75.7 µg/m³ — Good
Best months: Apr, Oct, DecWorst months: Jan, Jun–Jul
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.
Greater Upper Marlboro
United States
Annual Summary
Sunshine
2,384hrs/yr
Clear sky
47%
Worst month
4.7hrs/day
Vit D months
7.1months
UV 8+ days
29days/yr
UV 11+ days
0days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
7.07.0 hrs — Good
8.08.0 hrs — Good
9.19.1 hrs — Sunny
9.89.8 hrs — Sunny
1010 hrs — Very Sunny
1212 hrs — Very Sunny
1111 hrs — Very Sunny
1010 hrs — Very Sunny
9.09.0 hrs — Sunny
8.68.6 hrs — Sunny
7.87.8 hrs — Good
6.66.6 hrs — Good
Jan
Feb
Mar
Apr
May
Jun
7.07.0 hrs — Good
8.08.0 hrs — Good
9.19.1 hrs — Sunny
9.89.8 hrs — Sunny
1010 hrs — Very Sunny
1212 hrs — Very Sunny
Jul
Aug
Sep
Oct
Nov
Dec
1111 hrs — Very Sunny
1010 hrs — Very Sunny
9.09.0 hrs — Sunny
8.68.6 hrs — Sunny
7.87.8 hrs — Good
6.66.6 hrs — Good
Best months: May–JulWorst months: Jan, Nov–Dec
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●