Air quality in Old City
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
15.3 µg/m³
WHO guideline 15
PM10
15.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 PM
💨
PM2.5 15.3 µg/m³
58Moderate
10:00 PM
💨
PM2.5 13.9 µg/m³
55Moderate
11:00 PM
💨
PM2.5 12.2 µg/m³
51Moderate
12:00 AM
💨
PM2.5 11.4 µg/m³
48Good
1:00 AM
💨
PM2.5 11.4 µg/m³
48Good
2:00 AM
💨
PM2.5 11.5 µg/m³
48Good
3:00 AM
💨
PM2.5 11.4 µg/m³
48Good
4:00 AM
💨
PM2.5 11.1 µg/m³
46Good
5:00 AM
💨
PM2.5 10.1 µg/m³
42Good
6:00 AM
💨
PM2.5 9 µg/m³
38Good
7:00 AM
💨
PM2.5 8.2 µg/m³
34Good
8:00 AM
💨
PM2.5 7.8 µg/m³
33Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
81
Sat
💨
Moderate · UV High
56
Sun
💨
Moderate · UV High
60
Mon
💨
Moderate · UV High
71
Tue
💨
Moderate · UV High
62