ID: 118

AQSQID: 060111002

Site Name: Colusa - Sunrise Blvd.

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

Updated: March 6, 2021, 3:32 a.m.

Location: Colusa (Davison Court), CA

Reporting: True, Located: True

Current AQI: 29.0

Colusa (Davison Court) CA, US: 39.18919, -121.99887

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 13.5 μg/m3 (13) N/A 31.0
 
Feb. 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 11.4 μg/m3 (11) N/A 35.0
 
Feb. 27, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 10.7 μg/m3 (10) N/A 36.0
 
Feb. 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 10.2 μg/m3 (10) 15.0 μg/m3 (58) 58.0
 
Feb. 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 6.7 μg/m3 (7) 15.0 μg/m3 (58) 58.0
 
Feb. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 10.7 μg/m3 (10) 5.0 μg/m3 (21) 35.0
 
Feb. 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 17.1 μg/m3 (16) 16.0 μg/m3 (60) 60.0
 
Feb. 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.0 μg/m3 (7) 16.0 μg/m3 (60) 60.0
 
Feb. 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 54.0 μg/m3 (147) 147.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 13.7 μg/m3 (13) 45.0 μg/m3 (125) 125.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 18.5 μg/m3 (18) 18.0 μg/m3 (64) 64.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 18.7 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
Feb. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 19.1 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
Feb. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 14.6 μg/m3 (14) -1.0 μg/m3 (0) 14.0
 
Feb. 26, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.3 μg/m3 (14) 0.0 μg/m3 (0) 14.0
 
Feb. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 17.7 μg/m3 (17) 0.0 μg/m3 (0) 17.0
 
Feb. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 17.6 μg/m3 (17) 1.0 μg/m3 (5) 17.0
 
Feb. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 15.0 μg/m3 (14) 0.0 μg/m3 (0) 14.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 27.7 μg/m3 (26) -4.0 μg/m3 (0) 26.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 17.8 μg/m3 (17) -3.0 μg/m3 (0) 18.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 10.5 μg/m3 (10) N/A 25.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 13.5 μg/m3 (13) N/A 23.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 12.7 μg/m3 (12) N/A 21.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 19.0 μg/m3 (18) N/A 18.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 22.5 μg/m3 (21) N/A 21.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 13.5 μg/m3 (13) N/A 32.0
 
Feb. 26, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 9.4 μg/m3 (9) N/A 36.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 11.2 μg/m3 (11) 12.0 μg/m3 (50) 50.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 9.4 μg/m3 (9) 31.0 μg/m3 (91) 91.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 6.4 μg/m3 (6) 27.0 μg/m3 (83) 83.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.5 μg/m3 (9) 18.0 μg/m3 (64) 64.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.3 μg/m3 (8) 16.0 μg/m3 (60) 60.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 10.0 μg/m3 (10) 18.0 μg/m3 (64) 64.0
 
Feb. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 11.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 14.8 μg/m3 (14) 1.0 μg/m3 (5) 29.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 5.1 μg/m3 (5) 3.0 μg/m3 (13) 27.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 4.4 μg/m3 (5) -2.0 μg/m3 (0) 26.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 5.9 μg/m3 (6) -1.0 μg/m3 (0) 28.0
 
Feb. 25, 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. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 6.4 μg/m3 (6) 3.0 μg/m3 (13) 32.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 7.9 μg/m3 (8) N/A 32.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.4 μg/m3 (5) -3.0 μg/m3 (0) 31.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.3 μg/m3 (4) -4.0 μg/m3 (0) 30.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.4 μg/m3 (5) N/A 31.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.8 μg/m3 (3) -1.0 μg/m3 (0) 30.0
 
Feb. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 3.2 μg/m3 (3) N/A 30.0
 
Feb. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 5.4 μg/m3 (5) N/A 33.0
 
Feb. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 6.1 μg/m3 (6) N/A 35.0
 
Feb. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.8 μg/m3 (6) N/A 36.0
 
Feb. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 8.8 μg/m3 (9) N/A 36.0
 
Feb. 25, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 21.7 μg/m3 (21) N/A 36.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 22.0 μg/m3 (21) N/A 36.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 25.9 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Feb. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 34.5 μg/m3 (32) 4.0 μg/m3 (17) 36.0
 
Feb. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 39.0 μg/m3 (37) 2.0 μg/m3 (9) 37.0
 
Feb. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 44.0 μg/m3 (41) 13.0 μg/m3 (53) 53.0
 
Feb. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 56.5 μg/m3 (52) 17.0 μg/m3 (62) 62.0
 
Feb. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
Feb. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 13.0 μg/m3 (13) 21.0 μg/m3 (70) 70.0
 
Feb. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 7.3 μg/m3 (7) N/A 26.0
 
Feb. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 9.9 μg/m3 (10) N/A 26.0
 
Feb. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 9.8 μg/m3 (10) 1.0 μg/m3 (5) 30.0
 
Feb. 24, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -3.0 μg/m3 (0) 4.0
 
Feb. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.9 μg/m3 (5) N/A 28.0
 
Feb. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 5.1 μg/m3 (5) N/A 29.0
 
Feb. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.2 μg/m3 (3) N/A 29.0
 
Feb. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) N/A 28.0
 
Feb. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.9 μg/m3 (3) N/A 31.0
 
Feb. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 8.5 μg/m3 (8) -2.0 μg/m3 (0) 34.0
 
Feb. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 12.7 μg/m3 (12) 2.0 μg/m3 (9) 33.0
 
Feb. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.0 μg/m3 (4) N/A 30.0
 
Feb. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 6.5 μg/m3 (7) N/A 31.0
 
Feb. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 5.6 μg/m3 (6) N/A 32.0
 
Feb. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.7 μg/m3 (9) N/A 32.0
 
Feb. 24, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 8.8 μg/m3 (9) N/A 34.0
 
Feb. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.1 μg/m3 (10) 6.0 μg/m3 (25) 34.0
 
Feb. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 12.7 μg/m3 (12) 13.0 μg/m3 (53) 53.0
 
Feb. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 13.9 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
Feb. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 15.4 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 11.3 μg/m3 (11) 13.0 μg/m3 (53) 53.0
 
Feb. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 20.4 μg/m3 (19) 22.0 μg/m3 (72) 72.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 22.4 μg/m3 (21) 24.0 μg/m3 (77) 77.0
 
Feb. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 11.5 μg/m3 (11) 39.0 μg/m3 (110) 110.0
 
Feb. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 8.2 μg/m3 (8) 11.0 μg/m3 (46) 46.0
 
Feb. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 4.4 μg/m3 (5) 1.0 μg/m3 (5) 19.0
 
Feb. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (9) 18.0
 
Feb. 23, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 5.5 μg/m3 (6) 8.0 μg/m3 (34) 34.0
 
Feb. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 10.1 μg/m3 (10) -4.0 μg/m3 (0) 13.0
 
Feb. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 10.2 μg/m3 (10) 1.0 μg/m3 (5) 14.0
 
Feb. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 12.5 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
Feb. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 9.6 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 12.3 μg/m3 (12) -1.0 μg/m3 (0) 13.0
 
Feb. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 17.8 μg/m3 (17) 8.0 μg/m3 (34) 34.0
 
Feb. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 15.5 μg/m3 (15) N/A 15.0
 
Feb. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 13.2 μg/m3 (13) N/A 22.0
 
Feb. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 8.6 μg/m3 (8) N/A 25.0
 
Feb. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 15.2 μg/m3 (15) N/A 23.0
 
Feb. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 11.0 μg/m3 (11) -1.0 μg/m3 (0) 27.0
 
Feb. 23, 2021, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 6.3 μg/m3 (6) N/A 30.0
 
Feb. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.8 μg/m3 (5) -1.0 μg/m3 (0) 31.0
 
Feb. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 8.9 μg/m3 (9) 15.0 μg/m3 (58) 58.0
 
Feb. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 13.9 μg/m3 (13) 6.0 μg/m3 (25) 28.0
 
Feb. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 14.9 μg/m3 (14) 30.0 μg/m3 (89) 89.0
 
Feb. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 13.2 μg/m3 (13) 13.0 μg/m3 (53) 53.0
 
Feb. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.9 μg/m3 (12) 20.0 μg/m3 (68) 68.0
 
Feb. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 4.7 μg/m3 (5) 37.0 μg/m3 (105) 105.0
 
Feb. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 6.7 μg/m3 (7) N/A 21.0
 
Feb. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 9.9 μg/m3 (10) -4.0 μg/m3 (0) 17.0
 
Feb. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 5.9 μg/m3 (6) N/A 19.0
 
Feb. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.7 μg/m3 (8) 3.0 μg/m3 (13) 29.0
 
Feb. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 4.9 μg/m3 (5) -1.0 μg/m3 (0) 29.0
 
Feb. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.2 μg/m3 (7) -2.0 μg/m3 (0) 29.0
 
Feb. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.3 μg/m3 (4) N/A 27.0
 
Feb. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 3.7 μg/m3 (4) N/A 27.0
 
Feb. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.5 μg/m3 (3) N/A 29.0
 
Feb. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.9 μg/m3 (5) N/A 30.0
 
Feb. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 8.0 μg/m3 (8) N/A 31.0
 
Feb. 22, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.1 μg/m3 (9) N/A 31.0
 
Feb. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 9.4 μg/m3 (9) 3.0 μg/m3 (13) 31.0
 
Feb. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 7.1 μg/m3 (7) 12.0 μg/m3 (50) 50.0
 
Feb. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 1.6 μg/m3 (2) 19.0 μg/m3 (66) 66.0
 
Feb. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.4 μg/m3 (5) 18.0 μg/m3 (64) 64.0
 
Feb. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 6.9 μg/m3 (7) 22.0 μg/m3 (72) 72.0
 
Feb. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 8.3 μg/m3 (8) 26.0 μg/m3 (81) 81.0
 
Feb. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 13.1 μg/m3 (13) 26.0 μg/m3 (81) 81.0
 
Feb. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 11.4 μg/m3 (11) 21.0 μg/m3 (70) 70.0
 
Feb. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 7.5 μg/m3 (7) 0.0 μg/m3 (0) 24.0
 
Feb. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 0.7 μg/m3 (1) -2.0 μg/m3 (0) 24.0
 
Feb. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 3.7 μg/m3 (4) 2.0 μg/m3 (9) 25.0
 
Feb. 21, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 3.4 μg/m3 (4) -2.0 μg/m3 (0) 4.0
 
Feb. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.1 μg/m3 (4) -4.0 μg/m3 (0) 23.0
 
Feb. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 2.4 μg/m3 (3) N/A 21.0
 
Feb. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 1.5 μg/m3 (2) N/A 17.0
 
Feb. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 3.9 μg/m3 (4) N/A 23.0
 
Feb. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 3.8 μg/m3 (4) -1.0 μg/m3 (0) 25.0
 
Feb. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 5.2 μg/m3 (5) 1.0 μg/m3 (5) 25.0
 
Feb. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 6.4 μg/m3 (6) N/A 23.0
 
Feb. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.5 μg/m3 (7) N/A 25.0
 
Feb. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.5 μg/m3 (11) N/A 26.0
 
Feb. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 3.8 μg/m3 (4) N/A 31.0
 
Feb. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.7 μg/m3 (4) N/A 33.0
 
Feb. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 4.3 μg/m3 (4) N/A 32.0
 
Feb. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 0.6 μg/m3 (1) 13.0 μg/m3 (53) 53.0
 
Feb. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 0.6 μg/m3 (1) -1.0 μg/m3 (0) 33.0
 
Feb. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 2.9 μg/m3 (3) 6.0 μg/m3 (25) 31.0
 
Feb. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.3 μg/m3 (4) 2.0 μg/m3 (9) 30.0
 
Feb. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 6.8 μg/m3 (7) -3.0 μg/m3 (0) 28.0
 
Feb. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.2 μg/m3 (6) 14.0 μg/m3 (55) 55.0
 
Feb. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.7 μg/m3 (3) 47.0 μg/m3 (130) 130.0
 
Feb. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 3.1 μg/m3 (3) 29.0 μg/m3 (87) 87.0
 
Feb. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 3.9 μg/m3 (4) N/A 24.0
 
Feb. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 3.3 μg/m3 (4) N/A 27.0
 
Feb. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.4 μg/m3 (3) -4.0 μg/m3 (0) 30.0
 
Feb. 20, 2021, noon 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, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.5 μg/m3 (4) N/A 29.0
 
Feb. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.5 μg/m3 (3) N/A 30.0
 
Feb. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 3.1 μg/m3 (3) N/A 29.0
 
Feb. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (13) 30.0
 
Feb. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 7.1 μg/m3 (7) N/A 31.0
 
Feb. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 13.2 μg/m3 (13) -3.0 μg/m3 (0) 32.0
 
Feb. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.8 μg/m3 (5) 0.0 μg/m3 (0) 31.0
 
Feb. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 4.9 μg/m3 (5) N/A 25.0
 
Feb. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 8.3 μg/m3 (8) N/A 16.0
 
Feb. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 8.2 μg/m3 (8) N/A 19.0
 
Feb. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 7.3 μg/m3 (7) N/A 23.0
 
Feb. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 11.9 μg/m3 (12) N/A 25.0
 
Feb. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 5.5 μg/m3 (6) 23.0 μg/m3 (74) 74.0
 
Feb. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 3.2 μg/m3 (3) 2.0 μg/m3 (9) 25.0