ID: 122

AQSQID: 060170011

Site Name: South Lake Tahoe - Sandy Way

Added: April 21, 2020, 6:24 p.m.

Updated: March 5, 2021, 10:32 p.m.

Location: S Lake Tahoe (Tahoe Keys), CA

Reporting: True, Located: True

Current AQI: 8.0

S Lake Tahoe (Tahoe Keys) CA, US: 38.94498, -119.97061

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.3 μg/m3 (19) N/A 19.0
 
Feb. 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.4 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.3 μg/m3 (24) N/A 24.0
 
Feb. 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.4 μg/m3 (18) N/A 18.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) N/A 8.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.1 μg/m3 (28) N/A 28.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.2 μg/m3 (15) N/A 15.0
 
Feb. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.4 μg/m3 (18) N/A 18.0
 
Feb. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
Feb. 26, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.3 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.1 μg/m3 (6) N/A 6.0
 
Feb. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) N/A 5.0
 
Feb. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.4 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.9 μg/m3 (12) N/A 12.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.2 μg/m3 (14) N/A 14.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.8 μg/m3 (23) N/A 23.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.7 μg/m3 (22) N/A 22.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.9 μg/m3 (34) N/A 34.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 49.6 μg/m3 (46) N/A 46.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.5 μg/m3 (34) N/A 34.0
 
Feb. 26, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 30.5 μg/m3 (29) N/A 29.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.2 μg/m3 (15) N/A 15.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) N/A 15.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.6 μg/m3 (17) N/A 17.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) N/A 12.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.7 μg/m3 (19) N/A 19.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.1 μg/m3 (16) N/A 16.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) N/A 10.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
Feb. 25, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 1.5 μg/m3 (2) N/A 2.0
 
Feb. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) N/A 5.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.9 μg/m3 (14) N/A 14.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) N/A 9.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.4 μg/m3 (7) N/A 7.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.1 μg/m3 (21) N/A 21.0
 
Feb. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.5 μg/m3 (31) N/A 31.0
 
Feb. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.0 μg/m3 (43) N/A 43.0
 
Feb. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.3 μg/m3 (34) N/A 34.0
 
Feb. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.5 μg/m3 (19) N/A 19.0
 
Feb. 25, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 31.4 μg/m3 (30) N/A 30.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.5 μg/m3 (26) N/A 26.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.7 μg/m3 (20) N/A 20.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.9 μg/m3 (23) N/A 23.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.1 μg/m3 (17) N/A 17.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.5 μg/m3 (19) N/A 19.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.3 μg/m3 (19) N/A 19.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.8 μg/m3 (34) N/A 34.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.2 μg/m3 (20) N/A 20.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) N/A 12.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (7) N/A 7.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) N/A 7.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) N/A 9.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.1 μg/m3 (6) N/A 6.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) N/A 9.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) N/A 9.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) N/A 16.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) N/A 12.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.7 μg/m3 (18) N/A 18.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.6 μg/m3 (18) N/A 18.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.6 μg/m3 (23) N/A 23.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 49.3 μg/m3 (46) N/A 46.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.9 μg/m3 (21) N/A 21.0
 
Feb. 24, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 31.3 μg/m3 (29) N/A 29.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.5 μg/m3 (23) N/A 23.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (10) N/A 10.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.3 μg/m3 (21) N/A 21.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.6 μg/m3 (26) N/A 26.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.5 μg/m3 (18) N/A 18.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.7 μg/m3 (21) N/A 21.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.8 μg/m3 (30) N/A 30.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 31.3 μg/m3 (29) N/A 29.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.5 μg/m3 (28) N/A 28.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (10) N/A 10.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) N/A 8.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) N/A 7.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.5 μg/m3 (7) N/A 7.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) N/A 7.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.2 μg/m3 (15) N/A 15.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
Feb. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.6 μg/m3 (12) N/A 12.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.2 μg/m3 (11) N/A 11.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.6 μg/m3 (14) N/A 14.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.8 μg/m3 (23) N/A 23.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 36.9 μg/m3 (35) N/A 35.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.0 μg/m3 (26) N/A 26.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.8 μg/m3 (40) N/A 40.0
 
Feb. 23, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 16.9 μg/m3 (16) N/A 16.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.8 μg/m3 (17) N/A 17.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.3 μg/m3 (17) N/A 17.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.7 μg/m3 (27) N/A 27.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (27) N/A 27.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.7 μg/m3 (25) N/A 25.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.2 μg/m3 (32) N/A 32.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.7 μg/m3 (32) N/A 32.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.6 μg/m3 (25) N/A 25.0
 
Feb. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) N/A 13.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.6 μg/m3 (8) N/A 8.0
 
Feb. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) N/A 7.0
 
Feb. 22, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) N/A 6.0
 
Feb. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) N/A 5.0
 
Feb. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (6) N/A 6.0
 
Feb. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (10) N/A 10.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (12) N/A 12.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.6 μg/m3 (17) N/A 17.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.3 μg/m3 (17) N/A 17.0
 
Feb. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.1 μg/m3 (15) N/A 15.0
 
Feb. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.3 μg/m3 (30) N/A 30.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.9 μg/m3 (21) N/A 21.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.8 μg/m3 (20) N/A 20.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.4 μg/m3 (21) N/A 21.0
 
Feb. 22, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 20.5 μg/m3 (19) N/A 19.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.8 μg/m3 (23) N/A 23.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.3 μg/m3 (19) N/A 19.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.4 μg/m3 (18) N/A 18.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.8 μg/m3 (27) N/A 27.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.4 μg/m3 (14) N/A 14.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (10) N/A 10.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (10) N/A 10.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (11) N/A 11.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.4 μg/m3 (17) N/A 17.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) N/A 9.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.9 μg/m3 (14) N/A 14.0
 
Feb. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.7 μg/m3 (9) N/A 9.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.7 μg/m3 (6) N/A 6.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) N/A 8.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.9 μg/m3 (11) N/A 11.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) N/A 5.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.2 μg/m3 (17) N/A 17.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.9 μg/m3 (17) N/A 17.0
 
Feb. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.3 μg/m3 (26) N/A 26.0
 
Feb. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 34.2 μg/m3 (32) N/A 32.0
 
Feb. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 28.7 μg/m3 (27) N/A 27.0
 
Feb. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.1 μg/m3 (15) N/A 15.0
 
Feb. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) N/A 9.0
 
Feb. 21, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 6.5 μg/m3 (7) N/A 7.0
 
Feb. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (8) N/A 8.0
 
Feb. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (5) N/A 5.0
 
Feb. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (4) N/A 4.0
 
Feb. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (4) N/A 4.0
 
Feb. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.9 μg/m3 (6) N/A 6.0
 
Feb. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (5) N/A 5.0
 
Feb. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.1 μg/m3 (4) N/A 4.0
 
Feb. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) N/A 8.0
 
Feb. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
Feb. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.3 μg/m3 (3) N/A 3.0
 
Feb. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (5) N/A 5.0
 
Feb. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 7.7 μg/m3 (8) N/A 8.0
 
Feb. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.7 μg/m3 (2) N/A 2.0
 
Feb. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A -0.1 μg/m3 (0) N/A 0.0
Feb. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.8 μg/m3 (29) N/A 29.0
 
Feb. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.7 μg/m3 (9) N/A 9.0
 
Feb. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
Feb. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.6 μg/m3 (6) N/A 6.0
 
Feb. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) N/A 8.0
 
Feb. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (9) N/A 9.0
 
Feb. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) N/A 7.0
 
Feb. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (5) N/A 5.0
 
Feb. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.5 μg/m3 (4) N/A 4.0
 
Feb. 20, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 4.9 μg/m3 (5) N/A 5.0
 
Feb. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) N/A 7.0
 
Feb. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (10) N/A 10.0