ID: 2716

AQSQID: 060731022

Site Name: El Cajon - Lexington Elementary School

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

Updated: Jan. 22, 2021, 8:32 p.m.

Location: El Cajon (Bostonia), CA

Reporting: True, Located: True

Current AQI: 31.0

El Cajon (Bostonia) CA, US: 32.789561, -116.944222

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.6 μg/m3 (24) 31.0
 
Jan. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 8.4 μg/m3 (36) 36.0
 
Jan. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.7 μg/m3 (41) 41.0
 
Jan. 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 22, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.5 μg/m3 (15) 15.0
 
Jan. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 6.5 μg/m3 (28) 28.0
 
Jan. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (53) 53.0
 
Jan. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 11.9 μg/m3 (50) 50.0
 
Jan. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 14.9 μg/m3 (57) 57.0
 
Jan. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 18.2 μg/m3 (64) 64.0
 
Jan. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 8.4 μg/m3 (36) 36.0
 
Jan. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 5.7 μg/m3 (24) 26.0
 
Jan. 22, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
Jan. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 6.1 μg/m3 (26) 36.0
 
Jan. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 7.5 μg/m3 (32) 38.0
 
Jan. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
Jan. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 4.8 μg/m3 (20) 33.0
 
Jan. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.9 μg/m3 (25) 33.0
 
Jan. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 5.1 μg/m3 (22) 22.0
 
Jan. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 6.5 μg/m3 (28) 28.0
 
Jan. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 4.6 μg/m3 (20) 20.0
 
Jan. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.6 μg/m3 (16) 16.0
 
Jan. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (16) 16.0
 
Jan. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 4.1 μg/m3 (18) 18.0
 
Jan. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 5.3 μg/m3 (23) 23.0
 
Jan. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 9.7 μg/m3 (41) 41.0
 
Jan. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
Jan. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 0.4 μg/m3 (2) 33.0
 
Jan. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 1.5 μg/m3 (7) 33.0
 
Jan. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.7 μg/m3 (12) 32.0
 
Jan. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.2 μg/m3 (10) 32.0
 
Jan. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.8 μg/m3 (12) 34.0
 
Jan. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.4 μg/m3 (15) 35.0
 
Jan. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
Jan. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
Jan. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A -2.7 μg/m3 (0) 37.0
 
Jan. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A -2.3 μg/m3 (0) 37.0
 
Jan. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 0.7 μg/m3 (3) 37.0
 
Jan. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.7 μg/m3 (8) 37.0
 
Jan. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 1.1 μg/m3 (5) 34.0
 
Jan. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
Jan. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.3 μg/m3 (14) 14.0
 
Jan. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
Jan. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 1.6 μg/m3 (7) 38.0
 
Jan. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.4 μg/m3 (6) 38.0
 
Jan. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
Jan. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
Jan. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
Jan. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.7 μg/m3 (12) 36.0
 
Jan. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.3 μg/m3 (18) 38.0
 
Jan. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
Jan. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.2 μg/m3 (14) 37.0
 
Jan. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
Jan. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.7 μg/m3 (16) 39.0
 
Jan. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.4 μg/m3 (23) 39.0
 
Jan. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 6.5 μg/m3 (28) 38.0
 
Jan. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.8 μg/m3 (29) 37.0
 
Jan. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 7.0 μg/m3 (30) 30.0
 
Jan. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 9.2 μg/m3 (39) 39.0
 
Jan. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 7.5 μg/m3 (32) 32.0
 
Jan. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 10.6 μg/m3 (45) 45.0
 
Jan. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 9.9 μg/m3 (42) 42.0
 
Jan. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Jan. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.9 μg/m3 (55) 55.0
 
Jan. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.1 μg/m3 (62) 62.0
 
Jan. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 20.1 μg/m3 (68) 68.0
 
Jan. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 22.1 μg/m3 (73) 73.0
 
Jan. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 15.3 μg/m3 (58) 58.0
 
Jan. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 17.1 μg/m3 (62) 62.0
 
Jan. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 14.1 μg/m3 (56) 56.0
 
Jan. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 16.7 μg/m3 (61) 61.0
 
Jan. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 17.3 μg/m3 (62) 62.0
 
Jan. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 15.8 μg/m3 (59) 59.0
 
Jan. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 6.6 μg/m3 (28) 29.0
 
Jan. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 15.1 μg/m3 (58) 58.0
 
Jan. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 25.6 μg/m3 (80) 80.0
 
Jan. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 13.5 μg/m3 (54) 54.0
 
Jan. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.9 μg/m3 (17) 38.0
 
Jan. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 2.1 μg/m3 (9) 41.0
 
Jan. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.5 μg/m3 (23) 31.0
 
Jan. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 12.7 μg/m3 (53) 53.0
 
Jan. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 13.1 μg/m3 (54) 54.0
 
Jan. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 8.2 μg/m3 (35) 35.0
 
Jan. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.9 μg/m3 (50) 50.0
 
Jan. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.8 μg/m3 (57) 57.0
 
Jan. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 19.6 μg/m3 (67) 67.0
 
Jan. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 21.7 μg/m3 (72) 72.0
 
Jan. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 18.4 μg/m3 (65) 65.0
 
Jan. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 14.7 μg/m3 (57) 57.0
 
Jan. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 18.7 μg/m3 (65) 65.0
 
Jan. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 18.8 μg/m3 (66) 66.0
 
Jan. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.8 μg/m3 (25) 42.0
 
Jan. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 9.1 μg/m3 (38) 44.0
 
Jan. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 7.2 μg/m3 (31) 43.0
 
Jan. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.3 μg/m3 (10) 48.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A -0.8 μg/m3 (0) 42.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.6 μg/m3 (28) 37.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 12.7 μg/m3 (53) 53.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 16.6 μg/m3 (61) 61.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 12.4 μg/m3 (52) 52.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 14.9 μg/m3 (57) 57.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 16.6 μg/m3 (61) 61.0
 
Jan. 17, 2021, noon N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 14.8 μg/m3 (57) 57.0
 
Jan. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.8 μg/m3 (68) 68.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.1 μg/m3 (70) 70.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 25.5 μg/m3 (80) 80.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 27.6 μg/m3 (84) 84.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 26.7 μg/m3 (82) 82.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 25.5 μg/m3 (80) 80.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 24.4 μg/m3 (77) 77.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 17.6 μg/m3 (63) 63.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 16.9 μg/m3 (62) 62.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 16.9 μg/m3 (62) 62.0
 
Jan. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 5.1 μg/m3 (22) 43.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.5 μg/m3 (28) 43.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 8.9 μg/m3 (38) 45.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.4 μg/m3 (19) 43.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A -1.6 μg/m3 (0) 35.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 11.1 μg/m3 (47) 47.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 11.6 μg/m3 (49) 49.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 12.4 μg/m3 (52) 52.0
 
Jan. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.9 μg/m3 (42) 42.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 20.9 μg/m3 (70) 70.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 11.3 μg/m3 (48) 48.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 14.6 μg/m3 (57) 57.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 22.4 μg/m3 (73) 73.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 13.3 μg/m3 (54) 54.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 5.8 μg/m3 (25) 25.0
 
Jan. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.4 μg/m3 (10) 42.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A -0.1 μg/m3 (0) 44.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.0 μg/m3 (5) 44.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 1.9 μg/m3 (8) 43.0