Siwei
China · 17K
Lifestyle Calendar
When this city supports your activity — and when it fights you.
Siwei
China
Dinner Outside6 – 10 pm
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Verdict
Jan: 0% viability
0Feb: 0% viability
0Mar: 15% viability
15Apr: 51% viability
51May: 86% viability
86Jun: 90% viability
90Jul: 77% viability
77Aug: 79% viability
79Sep: 86% viability
86Oct: 37% viability
37Nov: 4% viability
4Dec: 0% viability
0Cold
Friction Breakdown
Heat
Cold
Wind
Rain
Humid
Air Q.
Best months: May–SepChallenging: Jan–Mar, 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.
Siwei
China
Annual Average
UnhealthyWHO annual classification
42.2µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
6060 µg/m³ — Very Unhealthy
6262 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
4040 µg/m³ — Unhealthy
3333 µg/m³ — Poor
3434 µg/m³ — Poor
2828 µg/m³ — Poor
3333 µg/m³ — Poor
2727 µg/m³ — Poor
4141 µg/m³ — Unhealthy
5050 µg/m³ — Very Unhealthy
4848 µg/m³ — Unhealthy
Jan
Feb
Mar
Apr
May
Jun
6060 µg/m³ — Very Unhealthy
6262 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
4040 µg/m³ — Unhealthy
3333 µg/m³ — Poor
3434 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
2828 µg/m³ — Poor
3333 µg/m³ — Poor
2727 µg/m³ — Poor
4141 µg/m³ — Unhealthy
5050 µg/m³ — Very Unhealthy
4848 µg/m³ — Unhealthy
Best months: May, Jul, SepWorst months: Jan–Mar
Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholdsConfidence: ●●●
Sun & UV Profile
Monthly sunshine, sky clarity, and UV exposure patterns.
Siwei
China
Annual Summary
Sunshine
2,438hrs/yr
Clear sky
56%
Worst month
5.9hrs/day
Vit D months
6.9months
UV 8+ days
17days/yr
UV 11+ days
0days/yr
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Daily hrs
8.08.0 hrs — Good
8.68.6 hrs — Sunny
9.99.9 hrs — Sunny
1010 hrs — Very Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
9.39.3 hrs — Sunny
9.79.7 hrs — Sunny
8.78.7 hrs — Sunny
8.98.9 hrs — Sunny
7.67.6 hrs — Good
8.08.0 hrs — Good
Jan
Feb
Mar
Apr
May
Jun
8.08.0 hrs — Good
8.68.6 hrs — Sunny
9.99.9 hrs — Sunny
1010 hrs — Very Sunny
1111 hrs — Very Sunny
1111 hrs — Very Sunny
Jul
Aug
Sep
Oct
Nov
Dec
9.39.3 hrs — Sunny
9.79.7 hrs — Sunny
8.78.7 hrs — Sunny
8.98.9 hrs — Sunny
7.67.6 hrs — Good
8.08.0 hrs — Good
Best months: Apr–JunWorst months: Jan, Nov–Dec
GoodSunnyVery Sunny
Based on ERA5 sunshine data · CAMS UV indexConfidence: ●●●